Pneumatic tire

FIELD: transport.

SUBSTANCE: invention relates to tread pattern of automobile tire intended to be used on ice. On the surface of tire crown zone located between both edges of tread there are multiple grooves positioned in circumferential direction of tire; multiple transversal grooves located in transversal direction of tire. Each of transversal grooves has point of curvature between main grooves and/or between main groove and tire edge so that they have convex from in circumferential direction of tire. Multiple main grooves and multiple transversal grooves from multiple separate blocks each one of which includes circumferential projection of shape that coincides with convex form of transversal grooves. Each of the blocks contains at least one transversal lamel located in tire transversal direction and coinciding in its shape with transversal grooves where transversal lamel size in tire transversal direction is equal to size of block with transversal lamel located in it if both ones are projected on one plane including tire rotation axis and perpendicular to block surface.

EFFECT: better tire friction properties on ice.

10 cl, 6 tbl, 14 dwg

 

The level of technology

Usually you want a tire with excellent performance on ice, in particular with the braking characteristics such that the tire is suitable for use on icy roads.

When this braking characteristics and coupling characteristics of the tire, as a rule, due to the influence of the frictional properties of the tire. Therefore, in order to improve the braking performance of the tire on ice, we need to improve the frictional characteristics of the tire on ice.

There are various ways to improve the frictional properties of the tire on ice. Such methods include providing the area of tire contact with the ground and the strengthening of scraping effect, which should make on the icy road edge blocks and edges of the lamellae formed on the crown area of the tire.

However, in the conventional pneumatic tire with lots of main grooves along the circumferential direction of the tire, and lots of cross grooves along the width direction of the tire, is formed on the surface of the crown area, so it is split into sections of rectangular blocks, with the sipes formed in the blocks (see, for example, patent JP H07-186633A), where the rigidity of the blocks 70 is increased, which may hinder the tilting of the blocks 70, and thus provide an area of contact of the tyre with the ground, as can be seen from figure 3(a), where schematically shows the position of the blocks during the drive, can not be obtained in full scraping effect, which must produce an edge on the icy road G.

Meanwhile, in the conventional pneumatic tire, as can be seen from Fig(b), which schematically shows another state of the blocks during the drive, when the rigidity of the blocks 70 reinforced in order to guarantee scraping effect of edges on the icy road G, squeezing the end side of each of the blocks 70 separates from the road surface, disrupting the provision of the contact area of the tyre with the ground.

Disclosure of inventions

For the reasons described above, the conventional pneumatic tire is unable to provide an area of contact of the tyre with the ground, while providing a scraping effect, which must produce an edge on the icy road, and therefore can not be obtained in sufficient frictional properties on the ice.

In view of the foregoing, the object of the present invention to provide a pneumatic tire capable of area of contact of the tyre with the ground, at the same time providing a scraping effect, which must produce an edge on the icy road, so will increase the frictional properties of the tire on ice and thereby improve performance on ice, in particular the braking performance on ice.

For the ache of the present invention is preferred resolution of problems mentioned above, and therefore, the pneumatic tire according to the present invention includes, at least partially, the surface of the crown zone, located between the two edges of the protector: a lot of the main grooves along the circumferential direction of the tire, and many cross grooves along the transverse direction of the tire; transverse grooves on one knee each, so they have a convex shape in the circumferential direction of the tire between the main grooves and/or between the main groove and the edge of the tread; many of the main grooves and multiple cross grooves forming the partitioning of the set of blocks, each of which there is a circumferential ledge coinciding in shape with the convex shape of the transverse grooves; blocks, each having at least one transverse lamella that is located in the transverse direction of the tire, the shape of which matches the shape of the transverse grooves, where the size of the transverse slats in the transverse direction is equal to the block size, which is transverse lamella, when both are projected onto a single plane that includes the axis of rotation of the tire and perpendicular to the surface of the block.

As described above, the transverse grooves have a single point of bending each, so they have a convex shape in the circumferential direction of the tire, is formed on the surface of gonnoi zone with the purpose of dividing it into blocks, each of which has a protrusion in the circumferential direction of the tire, so there may be provided a contact area with the ground on the icy road while increasing scraping effect, which should make the edges of the blocks on the icy road. In addition, the cross slats can be formed across the entire area of each block in the transverse direction relative to the view of the regional direction of the tire, so that it may be sufficient krakowa component, and thereby strengthened scraping effect, which should make the edges of the transverse lamellae on the icy road. Therefore, the area of contact of the tyre with the ground can be achieved while increasing scraping effect, which must be edges on the icy road, and thereby improved frictional characteristics of the tire on ice. The result can be obtained pneumatic tire with excellent performance on ice.

Here, in accordance with the present invention, the phrase "transverse groove has one inflection point" means that each wall of the transverse grooves (that is, the transverse groove - side wall units formed on both sides of the transverse grooves in the circumferential direction of the tire) is in a flat projection point bending. In addition, the size of the transverse slats in erachem direction of the tire, which is obtained when the transverse lamella projected onto a plane that includes the axis of rotation of the tire and perpendicular to the surface of the block" refers to the size in the transverse direction of the tire in the projection, which is obtained when the transverse slats projected on the same plane.

Here, the pneumatic tire of the present invention, the block size is more preferably in the transverse direction of the tire than in the circumferential direction of the tire. Despite the fact that the block size in the transverse direction of the tire is greater than the size in the circumferential direction of the tire, the block length can be increased from edge to edge in the circumferential direction of the tire, as well as increased length of transverse slats, so that could be enhanced scraping effect of the edges of the blocks and transverse slats, which should make the edges of the blocks and transverse slats on the icy road. Also the blocks are allowed when necessary to bend, to thereby enhance the scraping effect, which must produce an edge on the icy road.

Here, in the present invention, the size in the transverse direction of the tire" means the maximum length of the block in the direction of width of the tire. In addition, the block size in the circumferential direction of the tire" means the maximum length of the block in the circumferential direction of the tire.

In addition, in the pneumatic tire for infusion is to him the invention of the block preferably has at least three formed therein transverse slats, and at least one of the transverse slats located between the transverse lamellas arranged on both end in the circumferential direction of the tire sides of the block, preferably formed as a plate with a larger bottom, having an enlarged section at its bottom. Thanks to at least one of the transverse slats located between the transverse lamellas arranged on both end sides of the block in the circumferential direction of the tire, which is formed as a plate with an enlarged base, a water film is formed between the ice road and the tire can be completely removed along with obtaining sufficient contact area with the soil and increased scarring effect, which must be edges on the icy road. In addition, sufficient removal of water film allows the tire to come in close contact with the surface of the icy roads and thereby provide sufficient traction. In other words, the area of contact of the tyre with the ground can be achieved while increasing scraping effect, which must be edges on the icy road, and the effect of removing a water film lamella can be enhanced, thus improving the friction characteristics of the tire on ice. The result can be obtained tire with excellent performance on l the remote control.

Here, in the present invention, when the slats has an enlarged section at its base, the slats have an increased area whose width in the circumferential direction of the tire compared to the width of the open area of the slats in the circumferential direction of the tire on the surface of the crown area.

In addition, the pneumatic tire according to the present invention, the block preferably has a side wall located on the side of the circumferential ledge; lateral wall contains two sections of the side wall, which differ from each other by angles, and parts of the side walls preferably installed in the direction of the peak district ledge under the angles relative to the transverse direction of the tire is within a range from 15 to 45°. The angles θ1and θ2two plots side walls located at the end of the district ledge of the block are set within the range from 15 to 45° relative to the transverse direction of the tire, so scraping effect, which must be edges on the icy road can be particularly improved.

In the present invention, the peak district ledge" means the point where the straight deferred areas along the side walls located at the end of the district ledge block overlap with each other in the projection plane. In addition, the installation angles is θ 1and θ2sections of the side walls may be equal to each other or different from each other.

In addition, in the pneumatic tire of the present invention the transverse lamella preferably includes a combined transverse slats, comprising a pair of first fins and second fins; the first lamella one end open to one main groove or edge of the tread, and the other end ends within a block or open to the transverse groove of the first plate preferably has a dimensional component in the transverse direction of the tire, preferably overlapping with dimensional component of the second slats in the transverse direction of the tire in the projection obtained by projecting the first sipes and second sipes on the same plane that includes the axis the rotation of the tire and perpendicular to the surface of the block. The first slat and the second slat is made with the possibility to overlap each other in a block, when viewed from the side circumferential direction of the tire, and can therefore be provided with sufficient krakowa component and thereby increase scraping effect, which should make the edges of the transverse lamellae on the icy road.

In addition, in the pneumatic tire according to the present invention, the peak district protrusion is preferably placed offset from the Central the width of the block straight in the amount from 10 to 30% of the width of the block. Peak district protrusion is offset from the Central width of the block straight in the amount from 10 to 30% of the width of the block, making scraping effect, which must produce an edge on icy roads, can be further reinforced.

In the present invention the width of the block means the block size in the transverse direction of the tire in the projection, which is obtained when the block is projected onto a plane that includes the axis of rotation of the tire and perpendicular to the surface of the block.

In addition, the pneumatic tire of the present invention the transverse lamella preferably includes: the first component of the slats, one end of which is open to the main groove or edge protector located on the side of the mountain district of the protrusion relative to the Central width of the block is straight, and the second component of the slats with one end open to other major groove or the edge of the tread; and the second component of the slats are preferably formed of a three-dimensional, so that it is curved in the direction of the length, in the direction of depth. When peak district protrusion is offset, due to the formation of the so-called three-dimensional lamellae in the field on the side of the Central width of the block straight on top of the district projection unit can more effectively receive and have access to the precise area of tire contact with the ground, and scraping effect, which must be edges on the icy road.

Here, in the present invention, the phrase "transverse lamella contains the first component of the slats and the second component of the slats means that the transverse lamella (including combined lateral lamella) contains two sections (components lamellae)having different direction of the length relative to the transverse direction of the tire. In addition, the direction of the length of the component slats" means the direction of the length of a line passing through the center in the main direction of the component of the slats when the component slats curved length.

In addition, the pneumatic tire of the present invention the second component of the slats preferably has sliceby plot with depth of the slot is smaller than for other land in the second component of the slats. Thus formed sliceby section prevents the blocks from excessive slope, to thereby sufficiently to provide an area of contact of the tyre with the ground.

In addition, the pneumatic tire according to the present invention, the block has three or more transverse slats, each transverse plate preferably includes: the first component of the slats with one end open to the main groove or edge protector, located on the side of versionierung projection in relation to the Central width of the block is straight, and the second component of the slats with one end open to other major groove or the edge of the tread, with the first component transverse lamellae on both end sides of the block in the circumferential direction of the tire is preferably curved in the direction of the length, while in the transverse direction is made straight, or it is given a three-dimensional form, so that it is curved in the longitudinal and transverse directions. When peak district ledge is made with a bend, the first component of the slats of each of the cross slats are located on both end sides of the block in the circumferential direction of the tire, may be formed in the form of slats, curved in the longitudinal direction, while in the depth direction is made straight, either in the form of a so-called three-dimensional lamellae, allowing more effectively achieved and a sufficient contact area with the ground, and reinforced scraping effect produced by the edges on the icy road.

In addition, the pneumatic tire of the present invention the transverse groove preferably includes: a first component transverse grooves with one end facing to the main groove or edge protector located on the side of the mountain district of the protrusion relative to the Central width of the block is straight, and the second component transverse Cana is key with one end, converted to other major groove; the first component transverse groove width of the groove is preferably less than the width of the groove of the second component of the transverse grooves. In the case when the peak district ledge made the shift, the width of the groove of the first component of the transverse grooves can be made smaller than the width of the groove of the second component transverse grooves, so that the blocks adjacent to each other in the circumferential direction of the tire, can be located close to each other on the side of the first component transverse grooves, thereby increasing the rigidity of the block. This means, the rigidity of the blocks may be increased simultaneously to improve performance on ice, due to improve performance, in particular the braking performance on dry roads and wet roads.

In addition, the pneumatic tire according to the present invention, the block has two or more transverse slats, and each transverse plate located on both end sides of the block in the circumferential direction of the tire, preferably has a depth of the slots in the side of an open area smaller than at least one of the depths of the slots other than the open area of the transverse slats located on both end sides in the circumferential direction of the tire, and the depth of the slots of the other slats. the each of the cross slats, located on both end sides of the block in the circumferential direction of the tire, is made so that the depth of the slot with the open side was smaller than at least one of the depths of the slots other than the open area of the transverse slats located on both end sides in the circumferential direction of the tire, and the depth of the other blades, which prevents the blocks from excessive tilt, thereby ensuring a sufficient contact area with the ground.

Here, in the present invention, the "open area" means an area of transverse slats, open to the main groove (or to the edge of the tread) or the transverse groove, and "open party" means the area within the range from 2 to 6 mm in the longitudinal direction of the cross slats from the open area. In addition, "other slats" means transverse slats, different from the transverse slats located on both end sides of the block in the circumferential direction of the tire when the unit has three or more transverse slats.

According to the present invention can be manufactured tire with excellent performance on ice, in particular the braking performance on ice, and the area of contact of the tyre with the ground can be provided simultaneously with the strengthening of scraping effect produced by the edges on the icy road, through the I which increase the frictional properties of the tire on ice.

Brief description of drawings

Figure 1. Theoretical drawing illustrating part of the crown zone of pneumatic tires as a typical example corresponding to the present invention.

Figure 2. Explanatory drawings to illustrate the forces acting on one unit, when the pneumatic tire shown in figure 1, the applied braking force: figure 2(a) is an explanatory drawing for the case when the ring protrusion is located on the side of the pressed end of the unit; figure 2(b) is an explanatory drawing for the case when the ring protrusion is located on the side of the propelling end of the block.

Figure 3(a) is an explanatory drawing of the part of the crown zone of another pneumatic tire according to the present invention; figure 3(b) is an explanatory drawing of the part of the crown zone of another pneumatic tire according to the present invention.

Figure 4(a)-(d) - modified examples of units of pneumatic tires according to the present invention in an enlarged view.

Figure 5(a) - block depicted in figure 4(d), in section along the line II-II; figure 5(b) block shown in figure 4(d), in the context.

6(a) to another modified example of the block depicted in figure 4(d), in an enlarged view; 6(b) - block depicted in Fig.6(a), in section along the line III-III; 6(C) - block depicted in Fig.6(a), in section along the line IV-IV; 6(d) of the block depicted in Fig.6(a), cut right along the V-V.

7 is a modified example of the block of the pneumatic tire shown in figure 1, in section along the line I-I (see figure 1).

Fig - other examples of block of the pneumatic tire according to the present invention (in section).

Fig.9(a) to another modified example of the block depicted in Fig(a), in section along the line VI-VI; Fig.9(b) block depicted in Fig(a), in section along the line VII-VII; Fig.9(C) - block depicted in Fig.9(b), in section along the line VIII-VIII; Fig.9(d) of the block depicted in Fig(d), in section along the line IX-IX.

Figure 10(a) is an explanatory drawing of the part of the crown zone of another pneumatic tire according to the present invention; figure 10(b) is an explanatory drawing of the part of the crown zone of another pneumatic tire according to the present invention.

11 (a) is an explanatory drawing of the part of the crown zone of traditional pneumatic tires; 11(b) is an explanatory drawing of the part of the crown area of the pneumatic tire as an example for comparison.

Fig is an explanatory drawing of the part of the crown area of the pneumatic tire as an example.

Fig(a) and (b) are explanatory diagrams showing the relation between the tilt blocks and the area of contact of the tyre with the ground for a traditional bus.

Fig is an explanatory drawing of the part of the crown zone of another pneumatic tire according to the present invention.

The implementation of the invention

Below the technical the ski embodiments of the present invention is described with reference to the drawings. Figure 1 represents theoretical drawing illustrating the example of the crown area of the pneumatic tire according to the present invention. The pneumatic tire 1 has many of the main grooves 2 (figure 1 are three of them) and many of the transverse grooves 3, performed on the surface 1 of the crown zone, located between the two edges E of the tread, the main grooves 2 extend straight along the circumferential direction of the tire; the transverse grooves 3 are laid in the transverse direction of the tire between the main grooves 2, 2 and between the main groove 2 and the edge E of the tread, so that it is divided into many sections, forming blocks of 4. This is given as an example of the pneumatic tire, there are four rows of 5 plots the placement of blocks, each of which contains numerous blocks of 4.

Here, each of the transverse grooves 3, elongated in the transverse direction of the tire, there is one point of the bend, so that it has a convex shape in the circumferential direction of the tire (figure 1 - up). This is given as an example pneumatic tyres all transverse grooves 3 are curved in the same direction.

The shape of each block 4 coincides with the convex shape of the transverse grooves, which single out the area unit 4, preferably in the form of the tail boom, and each has a circumferential ledge 41. In addition, each is about unit 4 has at least one transverse plate 42, 43, 44 (figure 1 are three of them)made elongated in the transverse direction of the tire parallel to the transverse grooves 3. It should be noted that in the pneumatic tire of the present invention the transverse lamella is not necessarily limited to one shape and elongated in the same direction as the transverse slats and may be of any shape and stretch in any direction, which may differ from the shape and direction of the length of the transverse slats, without creating too uneven distribution of stiffness within a block.

Transverse slats 42, 43, 44 formed across the entire area of each block 4 in the transverse direction of the tire. In other words, the transverse slats 42, 43, 44 are open on both end sides of the block 4 in the transverse direction of the tire, when the block is formed between the main grooves 2, 2. As for unit 4, is formed between the main groove 2 and the edge E of the tread, the transverse slats 42, 43, 44 are open to the main groove 2 and the edge E of the tread. Therefore, the size of each transverse slats 42, 43, 44 in the transverse direction of the tire in the projection, which can be obtained by projecting blades on the same plane that includes the axis of rotation of the tire (not shown) and perpendicular to the surface of the unit 4 is equal to the size W in the transverse direction of the tire in the projection obtained when the block 4 is projected onto videopom is by plane. The width of the grooves transverse slats 42, 43, 44 (the width of the open areas of the transverse slats) is not limited to a specific value and may be in the range of 0.3 to 1.5 mm

Here, in this pneumatic tire, when the party district ledge 41 unit 4 is pressed by the end during braking, tire, as shown in the enlarged view on the drawing block 4 in figure 2(a), the force acts in the direction (shown in figure 2(a), arrows), driving parts of the wings, namely the two lateral ends of the block, made in the form of the tail boom to bend to the center (where the top 47). Therefore, the block 4 is not sensitive to the inclined deformation, especially in the center in the transverse direction of the tire, and can therefore be provided with the contact area of the tyre with the ground. In addition, parts of the wings (both end sides in the transverse direction of the tire) unit 4 are small inclined deformation that can enhance the scraping effect, which should make on the icy road, the edge of the block 4. Additionally, this is given as an example of the pneumatic tire has a transverse slats 42, 43, 44, executed across the entire area of block 4 in the transverse direction of the tire, which is capable enough to provide krakovo component, thereby exacerbating the scraping effect, which should make Le is Jana road edges transverse slats 42, 43, 44.

In addition, this is given as an example of the pneumatic tire, when the side opposite circumferential protrusion 41 unit 4 is pressed by the end during braking, tire, as shown in the enlarged view on the drawing block 4 in figure 2(b), the force acts in the direction (shown in figure 2(b), arrows), forcing polling stations open wings unit 4 having the shape of the tail boom. Therefore, parts of the wings (both end sides in the transverse direction of the tire) unit 4 are small inclined deformation that can enhance the scraping effect, which should make on the icy road, the edge of the block 4. Additionally, this is given as an example of the pneumatic tire has a transverse slats 42, 43, 44, executed across the entire area of block 4 in the transverse direction of the tire, which is capable enough to provide krakovo component, thereby exacerbating the scraping effect, which should make on the icy road edges transverse slats 42, 43, 44.

Therefore, as shown in the example of the pneumatic tire, the center section of the block in the transverse direction of the tire is able to provide a contact area with the ground, thus thanks to the placement of transverse slats may be scraping effect on the icy road,and can therefore be provided with the contact area of the tyre with the ground and simultaneously increase scraping effect, which should make the edge on the icy road, and thereby increase the frictional properties of the tire on ice.

Here are two sections of the side walls (the first section 45 of the side wall, the second section 46 of the side wall), which forms the side walls of the unit 4 from the district ledge 41, preferably can be mounted towards the top 47 of the district of protrusion 41 under the installation angles θ1θ2, each of which falls within the range from 15 to 45° relative to the transverse direction of the tire. When each of the set angles θ1θ2less than 15°, there is a fear that the effect shown in figure 2(a)may not take place even though the possibility of providing komkovoi component in the transverse direction of the tire. Meanwhile, if the installation angles θ1θ2more than 45°, then the blocks are losing rigidity in the transverse direction of the tire, so feel stronger inclined deformation, and can be afraid of losing a large area of contact with the ground. Here the installation angles θ1θ2sections of the side walls 45, 46 may be different from each other. However, it is preferable that the installation angles θ1θ2were equal to each other (θ12) to ensure a balanced area of tire contact with the ground and strengthen the scraping effect to the St should produce an edge on the icy road.

In addition, each block 4 has a size L in the circumferential direction of the tire (the size of the longest section of the block in the circumferential direction of the tire), which is preferably smaller than the size W of each block 4 in the transverse direction of the tire (the size of the longest section of the block in the transverse direction of the tire). As described above, when the size L in the circumferential direction of the tire is smaller than W in the transverse direction of the tire (L<W), the length of both edges in the circumferential direction of the tire can be increased from edge to edge of the block 4 and also may increase the length of the transverse slats unlike the case when the size L in the circumferential direction of the tire is greater than the size W in the transverse direction of the tire, making scraping effect, which should make the edges of the blocks 4 and transverse slats 42, 43, 44 on the icy road can be amplified with the concurrent strengthening of scraping effect that should make the edges of the blocks on the icy road; you can tilt the blocks as needed. To further strengthen the scraping effect, which should make the edges of blocks of 4 on the road surface, W may preferably be 1.1-2.5 times more L.

In addition, each block 4 preferably has from 0.16 to 0.40 transverse slats 42, 43, 44 per unit length (1 mm) unit 4 in the circumferential direction of the tire. The reason SL is blowing. When the density of the strip transverse slats less than 0,16/mm, there is a danger that the scraping effect, which must produce an edge on the icy road, will be insufficient. On the contrary, when the density of the strip transverse slats more 0,40/mm, then decreases the rigidity of the block that makes it easy tilting and leads to the danger of loss of contact area with the ground.

Each of the three transverse slats 42, 43, 44 formed in each of the blocks 4, has a depth of the slots listed below. Namely, the depth of the slots in each of the two lateral sipes 42, 44 are located on both end sides of the block 4 in the circumferential direction of the tire, the depth of the slot with the open side (in the range from 2 to 6 mm in the direction of the length of the transverse slats of the plot, where the lamella open to the main groove 2) is less than the depth of the slots 42, 44 without their open sides and the depth of the slot transverse slats 43, located in the center of the block 4. As described above, when the depth of the slots open plots of transverse slats 42, 44 are located on both end sides of the block 4 in the circumferential direction of the tire, is formed smaller than the depth of the slots of the transverse slats 42, 44 without their open sides and than the depth of the other transverse slats 43, can be prevented deformation of the blocks 4 on both end sides in the circumferential direction is ins (otherwise, they are susceptible to deformation due to the impact of the road surface), due to which it becomes possible to ensure a balanced area of tire contact with the ground and reinforced scraping effect, which must produce an edge on the icy road. Here the purpose of the protection unit 4 from the strain on both end sides in the circumferential direction of the tire can be formed by transverse slats 42, 44 with a smaller depth of the slots throughout their length than the depth of the slot transverse slats 43, as well as with depth of the slots at least the open sides of each of the cross slats 42, 44, less than the depth of the slits of the other transverse slats 43.

In the above pneumatic tire, is given as an example, all the blocks 4 are oriented in the same direction. However, the direction of orientation of the blocks 4 pneumatic tires according to the present invention is not limited to a particular case. More specifically, the pneumatic tire of the present invention can be blocks of 4, oriented differently in each row 5 plots the placement of blocks, as shown, for example, figure 3(a) and 3(b). Another possibility is the pneumatic tire of the present invention can be blocks, oriented in different directions within each range 5 land allocation blocks.

Figure 3(a) shows an example of another pneumatic tire of the present invention. A pneumatic tyre in figure 3(a) who engages in two number 5s, 5d plots the location of blocks and two rows 5A, 5b plots the location of blocks on the surface 1A of the crown area on both sides of the equator CL of the tire, which lies between them; in the ranks of the 5C, 5d plots the location of the blocks 4 are made with circumferential protrusions 41 oriented in the upper side of figure 3(a), in rows 5A, 5b plots the location of the blocks 4 are made with circumferential protrusions 41 oriented in the lower side of figure 3(a). Here, blocks of 4 pneumatic tires, are given by way of example, given a form similar to the form of blocks 4 pneumatic tires from the previous example.

Figure 3(b) shows an example of another pneumatic tire of the present invention. A pneumatic tyre in figure 3(b) includes a series 5b', 5d' plots the location of blocks on the surface 1B of the crown zone, made with circumferential protrusions 41 oriented in the upper side of figure 3(b), and the series 5A', 5C' sections of the layouts made with the district ledge 41, oriented to the lower side of figure 3(b); each of the rows 5b', 5d' made otherwise than each of the rows 5A', 5C'. Here, blocks of 4 pneumatic tires, are given by way of example, given a form similar to the form of blocks 4 pneumatic tires from the previous example.

In addition, the pneumatic tire shown in figure 3(a), 3(b)made with the possibility of balanced growth of fries is operating properties on ice regardless of the direction of rotation of the tire. Here the pneumatic tire of the present invention is made with a balanced increase of frictional properties on ice regardless of the direction of rotation of the tire, even if the blocks in the same row plots the location of the blocks are oriented in different directions.

In addition, the shape of blocks and slats pneumatic tire according to the present invention, if necessary, may be arbitrarily changed. Specifically, for example, as shown in figure 4(a), 4(C) and 4(d), the blocks can be manufactured so that their tops were in the offset position, and transverse slats, as shown in figure 4(b)-4(d), may be given the shape of the combined lamellae formed by the two blades, or it can be given the form of the so-called three-dimensional lamella.

Here the block 4A, depicted in figure 4(a), similar in configuration to the block 4 in figure 1-3, except that the peak district 47A projection unit 4A is shifted in figure 4(a) to the right by the distance from the Central width of the block 4A direct WC. Here, the pneumatic tire according to the present invention, the direction in which the displaced vertex, not limited to a particular case and the top 47A may be shifted in the opposite direction from that indicated in figure 4(a).

Further, a pneumatic tire with blocks 4A, located on the surface of the crown zone, the area where is located the top 47A of each block 4A, that is not sensitive to the inclined deformation like the aforementioned pneumatic tire with blocks of 4, located on the surface of the crown zone, thereby providing an area of contact of the tyre with the ground. In addition, pneumatic tires with blocks 4A, located on the surface of the crown area, scratchy effect, which should make the edges on the road surface, can be further reinforced, in particular, on the longer wing of the block 4A (region, which is located on the side of the Central width WC direct on top 47A). The result can be effectively amplified scraping effect, which should make the edges of the blocks 4A and edges of the transverse slats 42A, 43A, 44A on the road surface. Therefore, it can be ensured that the area of contact of the tyre with the ground while increasing scraping effect, which must produce an edge on the icy road, thereby improving the friction characteristics of the tire on ice.

The distance Of which is shifted peak 47A unit 4A from the Central width of the block 4A direct WC, preferably can be from 10 to 30% of the width W of the block. If the distance Of the offset is less than 10% of the width W of the block (<0,1W), there is a danger that it will become insufficient scraping effect, which should make the edge on the side of the longer wing on the ice is eroge. On the other hand, if the distance Of displacement will exceed 30% of the width W of the block (About>0,3W), there is a danger that the unit 4A will become susceptible to an inclined strain that makes it difficult to ensure the contact area with the ground.

Configuration block 4B, depicted in figure 4(b), similar to the configuration of the unit 4 is depicted in figure 1-3, except for the following positions. As the transverse slats unit 4 includes a combined transverse slats 42V, V, W consisting of the first slat 42', V', W', each of which is open at one end to the main groove on the right side of figure 4(b), while on the other side ends within the block, and the second sipes 42", W", V", each of which is open at one end to the other major groove (main groove on the left side of figure 4(b)), while on the other side ends within a block, and each of the first fins 42', V', W' combined slats 42V, V, W have dimensional component in the transverse direction of the tire, overlapping dimensional component in the transverse direction of the tire of each of the second fins 42", W", W" in the projection obtained by projecting the combined slat 42V, V, W on a single plane which includes the axis of rotation of the tire and perpendicular to the surface of the block. Here, in block 4B, the plate closest to the side of the mountain 47B in the circumferential direction is ins, opens on one end to the main groove on the left side of figure 4(b), while the opening at the other end of the transverse groove. However, in the pneumatic tire of the present invention the other end of the slats closest to the side of the mountain 47B in the circumferential direction of the tire, may end within a block.

Further, a pneumatic tire with blocks 4B, located on the surface of the crown area, the Central area (the area where the top 47B) of each block 4B, is not sensitive to the inclined deformation like the aforementioned pneumatic tire with blocks of 4, located on the surface of the crown zone, thereby providing an area of contact of the tyre with the ground. In addition, pneumatic tires with blocks 4B, is made on the surface of the corona zone, Krakova component can be increased, in particular, in the Central part of block 4B, therefore, the scraping effect, which should make the edges on the road surface can be increased, thereby effectively increasing scraping effect, which should make the edges of the blocks 4B and edges combined slats 42V, V, W on the road surface. Therefore, it can be ensured that the area of contact of the tyre with the ground while increasing scraping effect, which should make the edges on l is danoy the road, thereby increasing the frictional properties of the tire on ice.

Here, the length of overlap of the first slat 42', V', W' and second sipes 42", W", V", i.e. the length of the overlap dimensional components in the transverse direction of the tire in the projection of the two blades, can be defined as the maximum length to accommodate the combined slats 42V, V, W without contact with other transverse slats at a density gaskets from 0.16 to 0.40/mm thus Defined maximum length of the overlap allows sufficient to sustain krakovo component.

The configuration unit 4C, shown in figure 4(C), similar to the configuration of the block 4A, shown in figure 4(a), except as follows. Unit 4C includes as transverse slats combined slats 42S, and 43C, S, have the first lamella 42S', 43C', S', each of which is open at one end to the main groove on the right side of figure 4(C), ending on the other side of the block, and the second lamella 42S", and 43C", S", each of which is open at one end to the other major groove (main groove on the left side of figure 4(C)), ending on the other side of the inside unit; and each of the first slat 42S', and 43C', S' slats 42S, and 43C, S have dimensional component in the transverse direction of the tire, overlapping with the size of each component in the second slats 42S", And 43C", S" in the transverse direction of the tire in the projection obtained by projecting the combined transverse slats on a single plane that includes the axis of rotation of the tire and perpendicular to the surface of the block. Here, in block 4C, the plate closest to the side of the mountain 47S in the circumferential direction of the tire, opens on one end to the main groove on the left side of figure 4(C), while the opening at the other end of the transverse groove. However, in the pneumatic tire of the present invention the other end of the slats closest to the side of the mountain 47S in the circumferential direction of the tire, may end within a block.

Further, a pneumatic tire with blocks 4C, located on the surface of the crown area, the Central area of each unit 4C is a plot where the top 47S, is not susceptible to the inclined deformation as in the case of the above-mentioned pneumatic tires with blocks 4A, located on the surface of the crown zone, thereby providing an area of contact of the tyre with the ground. In addition, the scraping effect, which should make the edges on the road surface, can be further reinforced, in particular, on the longer wing unit 4C (the area on the side of the Central width WC direct on top 47S). In addition, pneumatic tires with blocks 4C produced is passed on the surface of the corona zone, krakowa component is increased, in particular at the Central site, where the top 47S unit 4C, like pneumatic tire with blocks 4B, located on the surface of the crown area, which may further enhance the scraping effect, which should make the edges on the surface of the road. Therefore, it can be ensured that the area of contact of the tyre with the ground while increasing scraping effect, which must produce an edge on the icy road, thereby increasing the frictional properties of the tire on ice.

As in the case of block 4A, the distance Of that vertex 47S shifted from the Central to the width of the block 4C straight WC, preferably can be from 10 to 30% of the width W of the block. In addition, as in the case of block 4B, the length of overlap of the first slat 42S', and 43C', S' and second slats 42S", and 43C", S", i.e. the length of the overlap dimensional components in the transverse direction of the tire in the projection of the two blades, can be defined as the maximum length to accommodate the combined slats 42S, and 43C, S without contact with other transverse slats at a density gaskets from 0.16 to 0.40/mm

The configuration unit 4D, shown in figure 4(d), similar to the configuration of the block 4C, shown in figure 4(C), except as follows. The first lamella 42D', 43D', 44D'used as the first components of the slats and p is the length at one end to the main groove on one side from the top 47D relatively Central to the width of the block 4D direct WC, are straight in the direction and length, and depth, while the second slats 42D", 43D", 44D", used as the second components of the slats, open at one end to the other main groove, have a three-dimensional shape, such that they are curved in the direction and length, and depth, as shown in figure 5(a) cut along the line II-II (see figure 4(d)). Here as lamellae three-dimensional shape that is curved in the direction and length, and depth, can be used, for example, slats, described in JP 2000-A. Here, unit 4D, the lamella that is located closest to the side of the mountain 47D in the circumferential direction of the tire, opens on one end to the main groove on the left side of figure 4(d), while the opening at the other end of the transverse groove. However, in the pneumatic tire of the present invention the other end of the slats closest to the side of the mountain 47D in the circumferential direction of the tire, may end within a block.

Further, a pneumatic tire with blocks 4D, located on the surface of the crown zone, the area where the top 47D each block 4D, is not sensitive to the inclined deformation as in the case of the above-mentioned pneumatic tires with blocks 4C, located on the surface of the crown zone, thereby providing an area of contact of the tyre with the ground. Chrome is also scraping effect, which should make the edges on the road surface, can be further reinforced, in particular, on the longer wing area unit 4D (the area on the side of the Central width WC direct on top 47D) and in the area where the top 47D. In addition, each of the second slat 42D", 43D", 44D", made for a longer wing unit 4D, configuration is a so-called three-dimensional lamella, which protects the wing from excessive reduction of rigidity, allowing more efficient and to obtain a sufficient contact area with the ground, and to provide a scraping effect, which must produce an edge on the icy road. Therefore, it can be ensured that the area of contact of the tyre with the ground while increasing scraping effect, which must produce an edge on the icy road, and thereby increase the frictional properties of the tire on ice.

As in the case of unit 4C, the distance Of that vertex 47D shifted from the Central to the width of the block 4D direct WC, preferably can be from 10 to 30% of the width W of the block. In addition, as in the case of unit 4C, the length of overlap of the first slat 42D', 43D', 44D' and second slats 42D", 43D", 44D", i.e. the length of the overlap dimensional components in the transverse direction of the tire in the projection of the two blades, can be defined as Maxim is supplemented flax length, to accommodate the combined slats 42D, 43D, 44D without contact with other transverse slats at a density gaskets from 0.16 to 0.40/mm In this regard, with the aim of adjusting the rigidity of the block 4D depth of the slits of the second slats 42D", 43D", 44D" block 4D can be set, as shown in figure 5(b), such that the depth of the slot of the second slats 43D", located in the center of the block was found to be greater than the depth of the slits of the second slats 42D", 44D", located on the front side of the block in the circumferential direction of the tire.

To adjust the rigidity of the blocks, to protect them from excessive slope and thus to ensure a sufficient contact area with the ground, the second slats 42D", 43D", 44D" unit preferably can be provided with slicename areas S with smaller cuts, such as at unit 4D', depicted in Fig.6(a). In addition, the open sides of the transverse slats (slats 42D', 44D' and second slats 42D", 44D"), located on both sides of the block in the circumferential direction of the tire, preferably can be provided with a plot of R with a raised bottom, where the slot is smaller in comparison with the depth of the slot 43D", located in the center of the block. Unit 4D', shown in Fig.6(b) in cross section along the line III-III (see Fig.6(a)), figure 6(C) cross section along the line IV-IV (see Fig.6(a)) and figure 6(d) in section along the line V-V (see Fig.6(a)), sliceby area S is the raised area R of the combined transverse slats 42D-44D is made small. Consequently, it can be prevented a significant reduction in the rigidity of the blocks and through this they will be protected from excessive slope, and thus possible to provide a sufficient area of contact of the tyre with the ground. Here, a single block may include either simultaneously sliceby area S and the raised area R, as shown in Fig.6(a), or only one thing - slicely plot S or raised area R.

In addition, the pneumatic tire of the present invention the slats 4 blocks, shown in figure 1-3 may have a different shape. In particular, at least three (three in figure 1) lateral sipes 42, 43, 44, located in the transverse direction of the tire parallel to the transverse grooves 3 can be given the shape shown in Fig.7. in the section on direct I-I (see figure 1).

Here, as shown in Fig.7, the transverse slats 42, 44 located on both end sides of the block 4 in the circumferential direction of the tire (below these slats can also be referred to as "district-face transverse slats"), as a modified example, each have a width in the circumferential direction, the same in the direction of depth. In addition, the cross plate 43 located between district-face transverse slats 42, 44 (below which may also be referred to as "Central transverse lamella"), is a lamella with increased DN is m, which enlarged section 43A (having the width D2 in the circumferential direction), almost round shape in cross section, with a larger width in the circumferential direction of the tire than the open on the surface 1 of the crown zone width D1 of the transverse slats 43. The pneumatic tires according to the present invention can be lamellas with increased bottom of different sizes and shapes. Lamella with increased bottom not limited to a particular case, and can be used, for example, bottle-shaped plate disclosed in patent JP 2009-166762 A.

Further, in the pneumatic tire according vidoesseanna example with blocks of 4, located on the surface of the crown zone, each unit 4 includes a Central transverse plate 43 made in the form of lamellae 43 with a larger bottom, and the area where the top 47 of each of the blocks 4, is not sensitive to the inclined deformation like the aforementioned pneumatic tire shown in Fig.1-3, and this should provide an area of contact of the tyre with the ground. In addition, the pneumatic tire according vidoesseanna example the Central transverse plate 43 made in the form of lamellas with a larger bottom, which has an enlarged section 43A at the bottom of the slats, so that it acquires a high drainage characteristics in order to effectively remove the water layer, which can be formed IU the remote road surface and the tire, so as to provide sufficient traction. Therefore, it can be ensured that the contact area of the tyre, while increasing scraping effect, which must produce an edge on the icy road, and the effect of removing a water film made by block making should improve the characteristics of the tire on ice.

Usually lamella with a larger bottom, formed in the block, reduces the rigidity of the block, making it susceptible to an inclined deformation. However, in the pneumatic tire according vidoesseanna example the Central transverse plate 43 that is different from the district-end of the transverse slats 42, 44 are located on both end sides in the circumferential direction of the block 4 made in the form of lamellas with a larger bottom, which prevents a significant reduction in stiffness at both ends of the block 4 in the circumferential direction of the tire; as a result, it is possible to prevent the excessive slant of deformation on the block.

As for pneumatic tires according to the present invention, in the case of manufacturing four or more transverse slats in block at least one of the transverse slats located between the transverse lamellas arranged on both end sides of the block in the circumferential direction of the tire (i.e. of transverse slats, other than district-face pop the river slats), preferably may be in the form of lamellas with a larger bottom.

In addition, in the aforementioned pneumatic tire with a block containing the Central transverse lamella made in the form of lamellas with a larger bottom, the shape of blocks and slats can be arbitrarily changed. In particular, as shown in Fig(a)-8(d), at least part of the transverse slats may be made in the form of so-called three-dimensional lamella.

Here the shape of the block 4E, shown in Fig(a), differs from the form from unit 4, shown in Fig.1-3, the fact that the top E district ledge A unit 4E is offset to the right on Fig(a) at a distance from the Central width of the block 4E straight WC. In addition, in block 4TH district-face transverse lamella E located on the side of the mountain A (upper side Fig(a)), made in the form of a combination of transverse slats, which includes the first lamella E', open at one end to the main groove (right on Fig(a)) and ending at the other end of the block 4E, and the second lamella E"opening on one end to the other major groove (main groove left on Fig(a)) and opening at the other end to the transverse groove in the upper part Fig(a). In addition, the unit 4E Central transverse lamella 43TH' made in the form of combiner the bathroom transverse slats, includes the first lamella 43TH' and the second lamella 43TH, and district-face transverse lamella 44TH located on the side opposite to the top E in the circumferential direction of the tire, made in the form of a combination of lamellae, which includes the first lamella 44TH' and the second lamella 44TH", the first slats 43TH', 44TH' open each at one end to the main groove (right on Fig(a)) and ends at the other end inside block, and the second lamella 43TH", 44TH open each one the end to another main groove (left to Fig(a)) and ends at the other end of the block. Here, the pneumatic tire of the present invention, the direction in which the offset top E, not limited to a particular case, and the top E may be shifted in the opposite direction from that shown in Fig 8(a). In addition, the second lamella E located closest to the top E in the circumferential direction of the tire, may be terminated at the other end of the block.

Further, each of the first lamella E', 43TH', 44TH' block E has a dimensional component in the transverse direction of the tire, overlapping with the dimensional component of each of the second fins E", 43TH", 44TH in the projection obtained by projecting transverse slats E, 43TH, 44TH on the same plane that includes the axis of rotation of the tire and perpendicular to the poverhnosti block.

In addition, unit 4E, the first slats E', 43TH', 44TH' and second slats E", 43TH", 44TH" are so-called two-dimensional lamellae, linearly elongated in the direction of length, and in the direction of depth, as shown in Fig.9(a) in the section on direct VI-VI (see Fig(a)) and figure 9(b) in cross section on a straight line VII-VII (see Fig(a)). Next, the first lamella 43TH', forming the Central transverse lamella 43TH located between district-face transverse slats E, 44TH block 4E, is a plate with a larger bottom, the lower part of which has an enlarged section 43A. In other words, in the block 4E part of the bottom of the Central transverse slats 43TH (first lamella 43TH'is provided with an enlarged section 43A. The pneumatic tire of the present invention the second lamella 43TH", forming the Central transverse lamella 43TH can also be made in the form of lamellas with a larger bottom.

Further, a pneumatic tire with blocks 4E, located on the surface of the crown zone, the area where the top E each block 4E, is not sensitive to the inclined deformation like the aforementioned pneumatic tire with blocks of 4, located on the surface of the crown zone, thereby providing an area of contact of the tyre with the ground. In addition, pneumatic tires with blocks 4E, located on the surface of the crown area can be up to omnitele reinforced scraping effect, which should make the edges on the road surface, in particular at the site of the long wings of the block 4E (region, which is located on the side of the Central width of the block straight WC on top E), which effectively increases scraping effect, which should make the edges of the block 4E and edges of the transverse slats E, 43TH, 44TH on the road surface. In addition, pneumatic tires with blocks 4E, located on the surface of the crown zone, Krakova component is increased, in particular at the Central site unit 4E, which may further enhance the scraping effect, which should make the edges on the surface of the road. The result can be effectively amplified scraping effect, which should make the edges of the blocks 4E and edges of the transverse lamellae on the surface of the road. Therefore, the area of contact of the tyre with the ground can be provided simultaneously with the strengthening of scraping effect, which must produce an edge on the icy road, and thereby increase the frictional properties of the tire on the icy road.

In addition, pneumatic tires with blocks 4E, located on the surface of the crown zone, the first lamella 43TH', forming the Central transverse lamella 43TH made in the form of lamellas with a larger bottom, having an enlarged section 43A at the bottom of the slats, so is it attains high drainage characteristics, in order to effectively remove the water film formed between a road surface and a tire, which guarantees sufficient traction.

The distance Of that vertex I shifted from the Central to the width of the block 4E straight WC, preferably can be from 10 to 30% of the width W of the block. When the distance Of the offset is less than 10% of the width W of the block (<0,1W), there is a danger that it will become insufficient scraping effect, which must produce on the surface of the road edge on the side of the longer wing. On the other hand, when the distance Of the offset exceeds 30% of the width W of the block (About>0,3 W), there is a danger that the unit 4E will be receptive to the inclined deformation, making it difficult to ensure the contact area with the ground.

Here, the length of overlap between the first slat E', 43TH', 44TH' and second slats E", 43TH", 44TH, i.e. the length of the overlap dimensional components in the transverse direction of the tire in the projection of the two blades, can be defined as the maximum length to accommodate the transverse slats with their density strip from 0.16 to 0.40/mm without contact with other transverse slats. The maximum overlap length, defined in this way can provide sufficient krakovo component.

Here, unit 4E, like unit 4, shown in Fig.1-3, two sections of the sides is x walls (the first section of the side wall A, the second section of the side wall E), forming a wall unit 4E on the side of the circumferential ledge E, preferably can be installed at angles θ1θ2, each of which falls within the range from 15 to 45 (relative to the transverse direction of the tire. In addition, each unit 4E has a size L in the circumferential direction of the tire, which is preferably smaller than the size W of each block 4E in the transverse direction of the tire, and, in addition, it is preferable that W was 1.1-2.5 times larger than L. in Addition, the depth of the slots, each of the two district-end of the transverse slats A and 44TH located on both end sides of the block 4 in the circumferential direction of the tire, on the open side is preferably less than the depth of the slits district-end of the transverse slats E, 44TH without their open sides and the depth of the slot the Central transverse slats 43TH.

Unit 4E, shown in Fig(b), the configuration is similar to the block 4A Fig(a), except as follows. The first lamella 42F', 43F', 44F', serving as the first components of the slats, open at one end to the main groove located on the side of the mountain 47F relatively Central to the width of the block 4F direct WC, are straight and in the direction of length, and in the direction of depth, while the second slats 42F", 43F", 44F", employees second components, open on one of them to the CE to another main groove, made three-dimensional, so that they bend in the direction of length, and in the direction of depth, as shown in Fig.9(C) in cross section along the line VIII-VIII (see Fig(b)). Here as slats, which given three-dimensional shape, curved in the direction of length, and in the direction of depth can be used, for example, plate disclosed in patent JP 2000-6619 A.

Further, a pneumatic tire with blocks 4F, located on the surface of the crown zone, the area where the top 47F of each block 4F, is not sensitive to the inclined deformation like the aforementioned pneumatic tire with blocks 4E, located on the surface of the crown zone, providing an area of contact of the tyre with the ground. In addition, Krakova component is increased, in particular, in the area where the top 47F block 4F, and therefore scraping effect, which should make the edges on the road surface, can be further reinforced. The result may additionally grow scraping effect, which must be made by the edges of the blocks 4F and transverse slats 42F, 43F, 44F on the road surface. Therefore, it can be ensured that the area of contact of the tyre with the ground while increasing scraping effect, which should make the edge on the icy road, which increases the f is actionee properties of the tire on ice.

In addition, pneumatic tires with blocks 4F, located on the surface of the crown zone, a water film can be formed between the road surface and the tire can effectively be removed first plate 43F', representing the lamella with a larger bottom, like the aforementioned pneumatic tire with blocks 4E, located on the surface of the crown zone. Consequently, it can be guaranteed sufficient traction.

In addition, pneumatic tires with blocks 4F, located on the surface of the crown zone, the so-called three-dimensional lamella is formed in a region on the side of the Central width of the block 4F direct WC on top 47F district ledge, so can effectively be achieved and a sufficient contact area with the ground, and scraping effect, which must produce an edge on the icy road.

Unit 4G, shown in Fig(s), the configuration is similar to the block 4F on Fig(b), except as follows. In the block 4G are the first lamella 42G', 43G', 44G', serving as the first components of the slats, open at one end to the main groove located on the side of the mountain 47G relatively Central to the width of the block 4G straight WC; of these, the first slats 42G', 44G', forming a district-face transverse slats 42G, 44G, formed curved in the direction of length, although ispolneny linear in the depth direction, meanwhile, the first lamella 43G', forming the Central transverse lamella 43G made line and in the direction of length, and in the direction of depth.

In addition, the block 4N shown in Fig(d), the configuration is similar to the block 4F, shown in Fig(b), and the block 4G, shown in Fig(C), except as follows. As shown in Fig.9(d) in section along the line IX-IX (see Fig(d)), unit 4H are the first lamella N', N', N', serving as the first components of the slats, open at one end to the main groove located on the side of the mountain IN relatively Central to the width of the block 4H straight WC; of these, the first slats N', N', forming a district-face transverse slats N, N formed three-dimensional, curved in the direction of length, and in the direction of depth, between the first lamella N', forming the Central transverse lamella N formed a straight line and in the direction of length, and in the direction of depth.

Further, a pneumatic tire with blocks of 4G or 4H, located on the surface of the crown zone, areas where there are peaks 47G and N each block 4G and 4H, become susceptible to the inclined deformation like the aforementioned pneumatic tire with blocks 4F, located on the surface of the crown zone. Therefore, it can be ensured that the area of contact of the tyre with the ground. The AOC is e, Krakowie components increased, particularly in areas where there are peaks 47G and N blocks 4G and 4H, and therefore scraping effect, which should make the edges on the road surface, can be further reinforced. The result may additionally grow scraping effect, which must be made by the edges of the blocks 4G, 4H and transverse slats 42G-44G, N-N on the road surface. Therefore, it can be ensured that the area of contact of the tyre with the ground while increasing scraping effect, which should make the edge on the icy road, which increases the frictional properties of the tire on ice.

In addition, pneumatic tires with blocks of 4G or 4H, located on the surface of the crown zone, a water film can be formed between the road surface and the tire can effectively be removed first slat 43G', 4N', representing the slats with a larger bottom, like the aforementioned pneumatic tire with blocks 4F, located on the surface of the crown zone. The result can be guaranteed sufficient traction. In addition, the so-called three-dimensional lamella is formed in a region on the side of the Central width of the blocks straight WC relatively peaks 47G, N circumferential protrusions 41G, N blocks 4G, 4H, so that can effectively be achieved and sufficient the contact area with the ground, and scraping effect, which must produce an edge on the icy road.

In addition, pneumatic tires with blocks of 4G, located on the surface of the crown zone, the first components of the slats 42G', 44G', forming a transverse slats 42G, 44G, located on both end sides of the block 4G in the circumferential direction of the tire, is formed curved in the direction of length, in the direction of the depth they made straight, so that the contact area between the walls of the lamellae increases with deformation of the block 4G compared with the case where the first components of the slats located on both sides in the circumferential direction of the tire, made in the form of straight bars in both directions -length and depth. The result eliminates redundant oblique deformation unit 4G. Consequently, it is possible to more effectively obtain a sufficient contact area with the ground and scraping effect, which must produce an edge on the icy road. In addition, pneumatic tires with blocks 4H, located on the surface of the crown zone, the first components of the slats N', N', forming a transverse slats N, N located on both end sides of the block 4N in the circumferential direction of the tire, is formed as a so-called three-dimensional blades, curved in both directions of length and depth the ins, so that the contact area between the walls of the lamellae increases with deformation of the block 4N in comparison with the case where the first components of the slats located on both sides in the circumferential direction of the tire, made in the form of blades, straight in the direction of depth. The result eliminates redundant oblique deformation unit 4H. Consequently, it is possible to more effectively obtain a sufficient contact area with the ground and scraping effect, which must produce an edge on the icy road.

Like the block 4E in the above-mentioned blocks 4F, 4G, 4H second slats closest to the top in the circumferential direction of the tire, may end up at the other end of the block. In addition, the distance that the peak is shifted from the Central to the width of the block is straight, the length of overlap between the first slat and the second slat and the installation angles θ1θ2two sections of the side wall section of the first side wall and part of the second side wall forming the side walls, can be set as the same value unit 4E. In addition, like the block, 4TH in blocks 4F, 4G, 4H size L of the block in the circumferential direction of the tire is preferably smaller than the size W of the block in the transverse direction of the tire. In addition, each of the two district-end of the transverse slats located on both t Ravich sides of the block in the circumferential direction of the tire, the depth of the slits on the open side slats preferably less than the depth of the slits district-end of the transverse lamellas without their open areas and the depth of the slot of the Central transverse slats.

In the case of manufacturing on the surface of the crown zone of such blocks, as the aforementioned blocks 4E-4H, each of which apex is offset from the Central width of the block's direct blocks can be manufactured with the same interval between them in the circumferential direction of the tire, as shown in figure 10(a), which shows the blocks 41, performed on the surface of the crown zone (figure 10(a) four rows). In particular, the blocks 41 can be obtained by its splitting into many areas of the main grooves 2 located in the circumferential direction of the tire, and a multitude of transverse grooves 3, each of which has the same width of the groove in the circumferential direction of the tire and is stretched in the transverse direction of the tire between the main grooves 2, 2 and/or between the main groove 2 and the edge E of the tread, with one knee in the form of a convexity in the circumferential direction of the tire.

Here the block 41 configuration similar to the block 4N shown in Fig(d), except as follows. Each of the first lamella 42I', 43I', 44I' is located on the side of the circumferential protrusion relative to the second slat 42I", 43I", 44I" (that is, the positional relationship between the first slat and the two slats in the circumferential direction of the tire is different); the first lamella 42I' opens on one end to the main groove 2 or to the edge E of the tread (figure 10(a), right), whereas at the other end opens to the transverse groove 3 (figure 10(a), above), and the second lamella 42I" opens at one end to the main groove 2 or to the edge E of the tread (figure 10(a), left), whereas at the other end ends up inside the unit. Next, a pneumatic tyre with blocks 4I made on the surface of the crown area, and able to provide an area of contact of the tyre with the ground, and strengthen scraping effect, which must produce an edge on icy roads, as well as in the case of the above-mentioned pneumatic tires with blocks 4H, made on the surface of the corona zone. In addition, the water film can be formed between the road surface and the tire can be effectively removed, thus providing sufficient traction.

Here, the pneumatic tire of the present invention, the top of each block, formed on the surface of the crown area by breaking it down into sections that are offset from the Central width of the block line; for the formation of blocks by dividing the plots can be used transverse grooves, each of which the width of the grooves is changed inside the grooves.

This means, according to figure 10(b), which shows part of the top of the spine of the crown area of the pneumatic tire, on which each slat of each block 4I'having the same shape as the slats blocks 4I, made like the blocks 4I that many of transverse grooves arranged in the transverse direction of the tire, from one point of the bend, so that they have a convex shape in the circumferential direction of the tire, between many of the main grooves 2 located in the circumferential direction of the tire and/or the main groove 2 and the edge E of the tread, can be formed from two components of the grooves (the first component 31 of the transverse grooves and the second component 32 of the transverse grooves, which are distinguished from each other by the width of grooves in the circumferential direction of the tire.

Specifically on the surface of the crown area of the pneumatic tire shown in figure 10(b), each of the transverse grooves formed by the first component 31 of the transverse groove, open at one end to the main groove 2 or to the edge E of the tread on the side of the mountain 47I' district of the protrusion relative to the Central width of the block 4I' straight, and the second component 32 of the transverse groove, open at one end to the other main groove 2 or the edge E of the tread. Further, the groove of the first component 31 of the transverse grooves made with a smaller width of the groove in the circumferential direction of the tire than the width of the groove in the circumferential direction of the tire of the second component 32 of the transverse grooves. More specifically, the width of the ditches and in the circumferential direction of the tire of the first component 31 of the transverse grooves may be, for example, from about 0.3 to 1.0 mm, which allows the blocks 4I', adjacent to each other in the circumferential direction of the tyre through cross a flute, to come into contact with each other, supporting each other when the blocks 4I' are inclined deformation. In addition, the width of the grooves in the circumferential direction of the tire of the second component 32 of the transverse grooves is from 1.5 to 5.0 mm

This means that this pneumatic tire in a flat projection of the tyre wall grooves on one side of the transverse grooves in the circumferential direction of the tire (upper side of figure 10(b)) and the wall of the groove on the other side (bottom side figure 10(b)) have each point of the curve, convex in the same direction in the circumferential direction of the tire, and inflection points of the walls of the grooves are different from each other position in the transverse direction of the tire. In other words, in this pneumatic tire, the position of the vertex 47I' block 4I' in the circumferential direction of the tire (the distance Of offset from the Central width of the block line) differs from the position of the top of the arch 48I' block 4I', located on the opposite from the top 47I' side in the circumferential direction of the tire (distance About' offset from the Central width of the block line). In this transverse groove straight line connecting the inflection points of the walls of the groove, forms the boundary between the first component 31 of the transverse grooves and the second com what onetom 32 transverse grooves.

Further, in this pneumatic tire, the width of the groove of the first component 31 of the transverse grooves is smaller, so that when the blocks 4I' are inclined deformation, the blocks 4I', adjacent to each other in the circumferential direction of the tire come into contact with each other on the side of the first component 31 of the transverse grooves, which increases the rigidity of the blocks. Therefore, as in the case of pneumatic tires in the above-mentioned blocks 4I made on the surface of the crown area, can improve the performance of the tires on dry roads or performance on wet roads, in particular the braking performance, and also improve performance on ice.

Embodiments of the present invention described above with reference to the drawings. However, the pneumatic tire of the present invention may need to be changed, which is not limited to the shown examples. In addition, the mounting direction of the blocks, the shape of the blocks described above may be combined for use as needed. In addition, the lamella with increased bottom may be formed as a plate, curved in the direction of the length or in the direction of depth, despite the fact that in its lower part there is an increased plot. In addition, when the cross lamella is made as combined Poperechnaya, on the side of the circumferential protrusion may be any of the first slat and the second slat. In addition, the aforementioned blocks may be only one part of the surface of the corona zone. Specifically, as shown in Fig, the above blocks can be used in combination with a set of polygonal blocks, includes many closely spaced octagonal in flat projection blocks 7, which are separated by a first narrow groove 6A and the second narrow groove 6b. On Fig reference position 4M refers to a block in the shape of the tail boom with the peak shifted from the Central to the width of the block is straight and two transverse slats 42M, 43M. In addition, the first narrow groove 6A refers to a groove located mainly in the transverse direction of the tire between the octagonal blocks 7, and the second narrow groove 6b refers to a groove that intersects the first narrow groove 6A. Further, the width of the grooves of each of the first narrow grooves 6A and second narrow grooves 6b is large enough to allow neighboring blocks 7 to move independently from each other without mutual constraints, and the width of the grooves preferably may range from 0.7 to 3 mm Further, when mounting a pneumatic tire with a surface of the crown zone of the above-described configuration of the vehicle tire is assembled so that the sets megapoli the s blocks were closer to the inner side of the vehicle, than blocks 4M in the form of the tail boom.

Examples

Below the present invention is described further by means of examples. However, the present invention is in no way limited by the following examples.

Example 1

Pneumatic tyre size 195/65R15 with the surface 1 of the crown zone, made, as shown in figure 1, was manufactured as a sample according to the specifications in table 1, then its performance characteristics were analyzed in the following way. In table 1 presents the results of the analysis.

Examples 2-5

Pneumatic tyre size 195/65R15 was manufactured as a sample in a manner similar to example 1, except that the installation angle θ1the wall section of the first lamella and the installation angle θ2the wall section of the second lamella unit in the form shown in figures 1, 2 were changed as shown in table 1. Then performance is made so the tires were subjected to analysis in the following way. In table 1 presents the results of the analysis.

The traditional example 1

Pneumatic tyre size 195/65R15 with the surface 1 of the crown zone, made, as shown in figure 11(a), was manufactured as a sample according to the specifications in table 1, then its performance characteristics were analyzed following pic is BOM. In table 1 presents the results of the analysis. Figure 11(a) rectangular blocks marked each as 4J, whereas the transverse slats marked each as 42J.

Comparative example 1

Pneumatic tyre size 195/65R15 with the surface 1 of the crown zone, made, as shown in figure 11(b), was manufactured as a sample according to the specifications in table 1, then its performance characteristics were analyzed in the following way. In table 1 presents the results of the analysis. Figure 11(b) blocks marked each as 4K, while the transverse slats marked each as 42K.

The braking performance on ice

Each of the tires manufactured in examples 1-5, conventional example 1 and comparative example 1 was mounted on the rim size of 15×6J, which was then mounted on the vehicle when the internal pressure of 200 kPa. Next, the bus is moving with a speed of 40 km/h on an icy road, was completely inhibited with the aim of measuring braking to a complete stop. Based on the speed before full braking and braking distance was obtained, the average slowdown. Then thus obtained average deceleration was indexed on a scale where 100 points is taken the average deceleration of the tire of comparative example 1. In table 1, higher values indicate better the e performance on ice.

Table 1
The traditional example 1Comparative example 1Example 1Example 2Example 3Example 4Example 5
The block shape11(a)Fig 11(b)1, 21, 21, 21, 21, 2
Size L in the circumferential direction of the tire, mm303017,617,617,617,617,6
The size W in the transverse direction of the tire, mm24242424242424
The installation angle θ1the first section laterally the wall, deg-303010154550
The installation angle θ2the second section of the side wall, hail-303010154550
The distance Of displacement of the vertices mm-------
The length of overlap between the first slat and the second slat in the transverse direction of the tire, mm-------
Brake feature on ice100101107103105 105102

Examples 1-5, conventional example 1 and comparative example 1 of table 1 show that the present invention is able to provide superior performance pneumatic tires on ice, and, in addition, show that performance on ice can be further improved by the installation angles of the plot side walls in the range from 15 to 45°.

Example 6

Pneumatic tyre size 195/65R15 was manufactured as a sample like in example 1, except that changed the size L of the block in the circumferential direction of the tire and the size W of the block in the transverse direction of the tire, as indicated in table 2, and was made six transverse slats, as shown in Fig. Performance made in such a way pneumatic tyres were analyzed in a manner similar to used for example 1. Table 2 presents the results of the analysis. It should be noted that Fig blocks depicted exaggeratedly convex form. In addition, the blocks on Fig marked each as 4L, while the transverse slats marked each as 42L.

Example 7

Pneumatic tyre size 195/65R15 was manufactured as a sample like in example 1, except that changed the size L of the block in the circumferential direction of the tire and the size W of the block in the ass is enom direction of the tire, as indicated in table 2, and was made five transverse slats. Performance made in such a way pneumatic tyres were analyzed in a manner similar to used for example 1. Table 2 presents the results of the analysis.

Examples 8, 9

Pneumatic tyre size 195/65R15 was manufactured as a sample like in example 1, except that changed the size L of the block in the circumferential direction of the tire and the size W of the block in the transverse direction of the tire, as indicated in table 2, without changing the number of transverse slats (three slats). Performance made in such a way pneumatic tyres were analyzed in a manner similar to used for example 1. Table 2 presents the results of the analysis.

Table 2
Example 6Example 7Example 8Example 9
The block shapeFig *1Fig.1, 2 *21, 21, 2
Size L in the circumferential direction of the tire, mm24,5 2110,59
The size W in the transverse direction of the tire, mm24242424
The installation angle θ1the first section of the side wall, hail30303030
The installation angle θ2the second section of the side wall, hail30303030
The distance Of displacement of the vertices mm----
The length of overlap between the first slat and the second slat in the transverse direction of the tire, mm----
Brake feature on ice103105105102
* 1 Cyclopropenone slats: 6.
* 2 the Number of transverse slats: 5.

Examples 6-9 of table 2, in particular examples 6, 7, indicate that performance on ice pneumatic tire according to the present invention can be further improved if the size W of the block in the circumferential direction of the tire more than the size L of the block in the transverse direction of the tire.

Examples 10-14

Pneumatic tyre size 195/65R15 was manufactured as a sample like in example 1, except that the block was made in the form shown in figure 4(a), where the peak is shifted and the distance Of the offset was set as indicated in table 3. Performance made in such a way pneumatic tyres were analyzed in a manner similar to used for example 1. In table 3 presents the results of the analysis.

Table 3
Example 10Example 11Example 12Example 13Example 14
The block shapeFigure 4 (a)Figure 4 (a)Figure 4 (a)Figure 4 (a)Figure 4 (a)
Size L in the circumferential direction of the tire, mm17,617,617,617,617,6
The size W in the transverse direction of the tire, mm2424242424
The installation angle θ1the first section of the side wall, hail3030303030
The installation angle θ2the second section of the side wall, hail3030303030
The distance Of displacement of the vertices mm4,01,52,57,08,0
The length of overlap between the first slat and the second slat in the transverse direction of the tire, mm
Brake feature on ice110107109109107

Examples 10-14 of table 3 indicate that performance on ice pneumatic tire according to the present invention can be further improved by shifting the vertices of the unit at a specified distance.

Examples 15, 16

Pneumatic tyre size 195/65R15 was manufactured as a sample like in example 1, except that the block was made in the form shown in figure 4(b), and the length of overlap between the first slat and the second slat wondered, as indicated in table 4. Performance made in such a way pneumatic tyres were analyzed in a manner similar to used for example 1. In table 4 presents the results of the analysis.

Example 17

Pneumatic tyre size 195/65R15 was manufactured as a sample like in example 1, except that the block was made in the form shown in figure 4(C), and the distance Of the offset and the length of overlap between the first slat and the second slat wondered, as indicated in table 4. Performance made in such a way pneumatic tyres were Powergen is you analysis method, like used for example 1. In table 4 presents the results of the analysis.

Example 18

Pneumatic tyre size 195/65R15 was manufactured as a sample like in example 1, except that the block was made in the form shown in figure 4(d), and the distance Of the offset and the length of overlap between the first slat and the second slat wondered, as indicated in table 4. Performance made in such a way pneumatic tyres were analyzed in a manner similar to used for example 1. In table 4 presents the results of the analysis.

Example 19

Pneumatic tyre size 195/65R15 was manufactured as a sample like in example 1, except that the block was made in the form shown in figure 4(d), with transverse lamella, with only sliceby area S shown in Fig.6. Performance made in such a way pneumatic tyres were analyzed in a manner similar to used for example 18. In table 4 presents the results of the analysis. Here the depth slavage plot was 3 mm, and the depth of the transverse slats without slavage plot was 7 mm

Example 20

Pneumatic tyre size 195/65R15 was manufactured as a sample like in example 1, except that the block was made in the form with sliceby uchastka the S and plot R with a raised bottom, depicted in Fig.6(a). Performance made in such a way pneumatic tyres were analyzed in a manner similar to used for example 18. In table 4 presents the results of the analysis. Depth slavage plot was 3 mm, the depth of the plot with a raised bottom was 2 mm, and the depth of the transverse slats without slavage area and area with a raised bottom was 7 mm

Table 4
Example 15Example 16Example 17Example 18Example 19Example 20
The block shapeFigure 4(b)Figure 4(b)Figure 4(C)Figure 4(d)Figure 4(d) *36(a)
Size L in the circumferential direction of the tire, mm17,617,617,617,617,617,6
The size W in the transverse direction Shi is s, mm242424242424
The installation angle θ1the first section of the side wall, hail303030303030
The installation angle θ2the second section of the side wall, hail303030303030
The distance Of displacement of the vertices mm--4444
The length of overlap between the first slat and the second slat in the transverse direction of the tire, mm3,51,03,53,53,53,5
Brake feature on ice 109108111114117121
*3 Transverse plate provided with a splined section.

Examples 15, 16 of table 4 show that performance on ice pneumatic tire according to the present invention can be further improved, if the first slat and the second slat overlap with each other. In addition, examples 17, 18 show that can be further improved performance on ice pneumatic tire according to the present invention with a displaced vertex with overlapping the first slat and the second slat. In addition, examples 17, 18 indicate that the second block is made in the form of a so-called three-dimensional lamellae, are able to additionally improve performance on ice. Examples 19, 20 indicate that performance on ice pneumatic tire according to the present invention can be further improved if the block formed sliceby section of the site and with a raised bottom.

Example 21

Pneumatic tyre size 195/65R15 was manufactured as a sample according to the specifications in table 5, with the surface 1 of the crown zone, made as of pokazanova 1, except that the Central transverse lamella made in the form of lamellas with a larger bottom. Performance made in such a way pneumatic tyres were analyzed following way. In table 5 presents the results of the analysis.

Example 22

Pneumatic tyre size 195/65R15 was manufactured as a sample similar to example 21, except that the block was made in the form shown on Fig(a)-(d), and the length of overlap between the first slat and the second slat was specified, as indicated in table 5. Performance made in such a way pneumatic tyres were analyzed in a manner similar to used for example 18. In table 4 presents the results of the analysis.

The braking performance on ice

Each of the tires made as example 1, examples 21-25 and conventional example 1 was mounted on the rim size of 15×6J, which was then mounted on the vehicle when the internal pressure of 200 kPa. Next, the bus is moving with a speed of 40 km/h on an icy road, was completely inhibited with the aim of measuring braking to a complete stop. Based on the speed before full braking and braking distance was obtained, the average slowdown. Then thus obtained average deceleration was indexed on the Kale, where 100 points is taken the average deceleration of the tire of comparative example 1. In table 5, higher values indicate better performance on the ice.

The braking performance on dry roads

Each of the tires made as example 1, examples 21-25 and conventional example 1 was mounted on the rim size of 15×6J, which was then mounted on the vehicle when the internal pressure of 200 kPa. Next, the bus is moving with a speed of 80 km/h on a dry road was fully locked to measure braking to a complete stop. Based on the speed before full braking and braking distance was obtained, the average slowdown. Then thus obtained average deceleration was indexed on a scale where 100 points is taken the average deceleration of the tire of comparative example 1. In table 5, higher values indicate better performance on dry roads.

The braking performance on a wet road

Each of the tires made as example 1, examples 21-25 and conventional example 1 was mounted on the rim size of 15×6J, which was then mounted on the vehicle when the internal pressure of 200 kPa. Next, the bus is moving with a speed of 80 km/h on a wet road, was completely inhibited with the aim of measuring the brake putida full stop. Based on the speed before full braking and braking distance was obtained, the average slowdown. Then thus obtained average deceleration was indexed on a scale where 100 points is taken the average deceleration of the tire of comparative example 1. In table 5, higher values indicate better performance on wet roads.

The size W in the transverse direction of the tire, mm
Table 5
The traditional example 1Example 1Example 21Example 22Example 23Example 24Example 25
The block shape11(a)1, 21, 2*4Fig(a)Fig(b)Fig(C)Fig(d)
Size L in the circumferential direction of the tire, mm3017,617,617,617,617,617,6
24242424242424
The installation angle θ1the first section of the side wall, hail303030303030
The installation angle θ2the second section of the side wall, hail303030303030
The distance Of displacement of the vertices mm4444
The length of overlap between the first slat and the second slat in the transverse direction of the tire, mm 3,53,53,53,5
Brake feature on ice100107109115118121123
Brake characteristics on dry roads100104109114124130130
Braking characteristics on wet roads100105108114120127128
*4 Central transverse lamella that is located in the center in the circumferential direction of the tire, made in the form of lamellas with a larger bottom.

Table 5 shows that the performance of the pneumatic tires of examples 21-25 increased compared with the characteristics of the tires of conventional example 1, the rectangular blocks which are equipped with the plates is mi, straight line and in the direction of the length (the direction across the width of the tire), and in the direction of depth, and compared with the pneumatic tire of example 1. In addition, also the braking characteristics of the tires of examples 21-25 on dry roads and wet roads, as the blocks are curved as required to ensure the necessary contact area with the ground.

Example 26

Pneumatic tyre size 195/65R15 was manufactured as a sample similar to example 21, except that the crown surface area is made in the form depicted in figure 10(a). Next performance is made in such a way pneumatic tyres were analyzed in a manner similar used, for example 21, except that the obtained values were indexed on a scale where 100 points is taken the average deceleration of the tire of comparative example 26. In table 6 presents the results of the analysis.

Example 27

Pneumatic tyre size 195/65R15 was manufactured as a sample similar to example 21, except that the crown surface area is made in the form depicted in figure 10(b), and the width of the grooves of the first component of the transverse grooves and the second component transverse grooves were set as indicated in table 6. Next performance is made in such a way pneumatic the ins were analysed by the method, similar used, for example 21, except that the obtained values were indexed on a scale where 100 points is taken the average deceleration of the tire of comparative example 26. In table 6 presents the results of the analysis.

4
Table 6
Example 26Example 27
The block shapeFigure 10(a)Figure 10(b)
Size L in the circumferential direction of the tire, mm17,617,6
The size W in the transverse direction of the tire, mm2424
The installation angle θ1the first section of the side wall, hail3030
The installation angle θ2the second section of the side wall, hail3030
The distance O offset vertices mm45
The distance O' bias point of the arch, mm4
The length of overlap between the first slat and the second slat in the transverse direction of the tire, mm3,53,5
The width of the groove of the first component transverse slats, mm20,5
The width of the groove of the second component transverse slats, mm22
Brake feature on ice100100
Brake characteristics on dry roads100104
Braking characteristics on wet roads100103

Table 6 shows that the performance characteristics of pneumatic tires of example 27 on dry roads and wet roads are better compared with the characteristics of the tires of example 26.

Industrial applicability

The present invention is able to provide increased frictional properties of pneumatic tires on ice, which is perfectly reflected in their performance on the ice, in particular on the brake what's the performance on ice.

Description reference positions

1the tread surface of the crown zone
1Athe tread surface of the crown zone
1Bthe tread surface of the crown zone
2the main groove
3transverse groove
4block
4A-4Mblock
5some sites block
5a-5dsome sites block
5a'-5d'some sites block
6a, 6bnarrow groove
7block
31the first component of transverse slats
32the second component of the transverse slats
41 circumferential ledge
42transverse lamella
42A-42Ltransverse lamella
43A-43Htransverse lamella
44A-44Htransverse lamella
42'-42I'the first lamella
42B"-42I"the second lamella
43A-Ntransverse lamella
V'-43I'the first lamella
43B"-43I"the second lamella
44transverse lamella
44A-44Htransverse lamella
V'-44I'the first lamella
44B"-44I"the second lamella
43aincreased plot
45the first section of the side wall
45A-45Hthe first section of the side wall
46the second section of the side wall
46A-46Hthe second section of the side wall
47top
47A-Gtop
48Gthe top point of the code
70block
WSCentral to the width of the block straight
Sslotted section
Rplot with a raised bottom

1. Pneumatic tire containing, at least partially, the surface of the crown zone, located between the two edges of the tread;
many of the main grooves arranged in the circumferential direction of the tire;
many of transverse grooves arranged in the transverse direction of the tire; each transverse groove has an inflection point between the main grooves and/or between the main groove and the edge of the tread so that it becomes convex in the circumferential direction of the tire form;
many of the main grooves and multiple cross grooves, forming separate blocks, each of which has a ledge in ukrainianamerican tires, the form which coincides with the convex shape of the transverse grooves;
blocks, each of which has at least one transverse lamella that is located in the transverse direction of the tire and coinciding in form with the transverse grooves,
where the size of the transverse slats in the transverse direction of the tire is equal to the block, which is owned by him lamella, if they are projected on the same plane that includes the axis of rotation of the tire and perpendicular to the surface of the block;
when this peak district protrusion is offset from the Central width of the block straight on 10-30% of the width of the block.

2. Pneumatic tire according to claim 1, in which the block size is larger in the transverse direction of the tire than in the circumferential direction of the tire.

3. Pneumatic tire according to claim 1 or 2, in which the block is formed of at least three transverse slats and at least one of the transverse slats located between the transverse lamellas arranged on both end sides of the block in the circumferential direction of the tire, is formed in the form of lamellas with a larger bottom, which increased its lower section.

4. Pneumatic tire according to claim 1 or 2, in which the block has a side wall located on the side of the circumferential ledge; the side wall includes two sections of the side wall, which differ from one another installation angle is mi, and parts of the side wall installed under the installation angles to the direction of the peak district protrusion relative to the transverse direction of the tire is within a range from 15 to 45°.

5. Pneumatic tire according to claim 1 or 2,
transverse lamella which includes a combined transverse lamella, which includes a pair of first fins and second fins; one end of the first lamella is open to one main groove or edge of the tread, and the other end ends within a block or open to the transverse groove; one end of the second slats open to other major groove or the edge of the tread, and the other end ends within a block or open to cross slats,
where the first plate has a dimensional component in the transverse direction of the tire, overlapping with dimensional component in the transverse direction of the tire of the second slats in the projection obtained by projecting the first sipes and second sipes on a single plane which includes the axis of rotation of the tire and perpendicular to the surface of the block.

6. Pneumatic tire according to claim 1,
transverse lamella which includes: the first component of the slats, one end of which is open to the main groove or edge protector located on the side of the mountain district of the protrusion relative to the Central width of the block is straight, and the second component slats, one con is C which is open to other major groove or the edge of the tread,
where the second component of the slats has a three-dimensional form, so that it is curved in the direction of length, and in the direction of depth.

7. Pneumatic tire according to claim 6, in which the second component of the slats has a slotted section with the smaller depth of the slot than the other plot in the second component of the slats.

8. Pneumatic tire according to claim 1,
the block which has three or more transverse slats,
where each cross slat includes: the first component of the slats, one end of which is open to the main groove or edge of the tread and is located on the side of the mountain district of the protrusion relative to the Central width of the block is straight, and the second component slats, one end of which is open to other major groove or the edge of the tread,
where the first component transverse lamellae on both end sides of the block in the circumferential direction of the tire formed by bending in the direction of the length, while in the depth direction is made straight or formed three-dimensional, so that it is curved in the direction of length, and in the direction of depth.

9. Pneumatic tire according to claim 1,
transverse groove which includes: the first component of the transverse grooves, one end of which is open to the main groove or edge protector located on the side of the mountain district of the protrusion relative to the Central ø the Rin block direct, and the second component transverse grooves, one end of which is open to other major groove or the edge of the tread,
where the width of the groove of the first component of the transverse grooves is less than the width of the groove of the second component of the transverse grooves.

10. Pneumatic tire according to claim 1 or 2,
the unit which has two or more transverse slats,
where each of the cross slats are located on both end sides of the block in the circumferential direction of the tire, has a smaller depth of the slots in the side of an open area than at least one of the depths of the slots of the site, other than the side open plots of transverse slats located on both end sides in the circumferential direction of the tire, and the depth of the slots of the other slats.



 

Same patents:

Pneumatic tire // 2523539

FIELD: transport.

SUBSTANCE: pneumatic tire 1 having excellent snow-running characteristics while keeping control stability and resistance to uneven wear, including tread 2 containing a pair of longitudinal crown grooves running continuously in longitudinal direction of tire at both sides of tire equator C and having edges, where one edge 3m runs in zigzag fashion, so that L-shaped sections 3s of groove edge are continuously interconnected in tire longitudinal direction, and the other edge 3n runs in corrugated manner so that arc-shaped sections of groove edge 3o having arc-shaped convexity towards groove centre are continuously interconnected in tire longitudinal direction where each section 3s of L-shaped groove edge includes long portion 3c inclined at angle of 1 to 20° relative to longitudinal direction, and short portion 3t with longitudinal length less than this value for long portion 3c and inclined in direction opposite to direction of the mentioned long portion 3c relative to longitudinal direction.

EFFECT: improved characteristics.

17 cl, 1 tbl, 10 dwg

FIELD: transport.

SUBSTANCE: tire tread has at least two wearing plies including outer wearing ply and at least one inner wearing ply located at mid tread under outer wearing ply, and at least one outer groove located in outer wearing ply. Besides, said tread features volumetric cavity ratio of 0.25-0.40 in sound state and of about 0.25-0.40 in worn-out state. External side interacting with ground extends along one of inner wearing ply in worn-out tread. Additionally, said tread features contact surface ratio of 0.66-0.72 in sound state and of about 0.56-0.66 in worn-out state.

EFFECT: enhanced performances.

15 cl, 19 dwg

FIELD: transport.

SUBSTANCE: tire has tread (1) including at least one groove (3) of circular orientation and multiple raised elements (21, 22). Note here that every said raised element comprises contact side (11) with crosswise width Lt and lateral walls (210). Note also that there is at least one raised element with multiple noise killing devices. Note that every said device has elongated cavity (4) of total volume Vc to open toward lateral wall (210). Note that said cavity features total length Lc larger than said length Lt and geometry that includes several interconnected parts (40, 41, 42, 43, 44, 45). Note also that length Lc makes the sum of parts of said cavity. Note that every said cavity (4) extends over the entire length Lc with notch (5) extending radially outward out to rolling surface. Note that sum tread sum Ly of lengths in projection in crosswise direction of every cavity is at least 1.5 times larger than the sum Lx of length in projection if the cavity circumferential direction.

EFFECT: perfected noise killing.

9 cl, 8 dwg

Pneumatic tire // 2521455

FIELD: transport.

SUBSTANCE: pneumatic tire includes tread section which contains ring grooves (2-4) running in circular direction of tire, as well as lateral grooves (5, 6) running in direction of tire width, and multiple road-contacting blocks (7), separated by ring and lateral grooves. Each of road-contacting blocks contains lamellae (8), which run from tread running surface inside blocks to specified depth in radial direction of tire, herewith, each one of lamellae has end section communicating with at least any one of ring and lateral grooves. At least one of multiple lamellae contains widening ring-shaped section on its inner end in radial direction of tire. Herewith, the widening ring-shaped section is increased in its diameter gradually and smoothly running to side walls of road-contacting block.

EFFECT: creation of pneumatic tire with high drainage effect, as well as prevention of tearing lamella in tire tread.

9 cl, 12 dwg, 1 tbl

Pneumatic tire // 2521052

FIELD: transport.

SUBSTANCE: invention relates to tread pattern of automobile non-spiked tire with improved noise characteristics. Pneumatic tire includes axially-internal lengthwise rows of crown blocks which rows are located at each side of tire equator, and axially-external lengthwise rows of shoulder blocks which rows are located axially to the outside of axially-internal lengthwise rows. Crown blocks are longitudinally separated by the first and the second interleaving transverse grooves of the crown. Shoulder blocks are longitudinally separated by the first and the second interleaving transverse shoulder grooves. The first transverse shoulder grooves have width of not less than 3.5 mm. The first transverse crown grooves have width of not less than 2.0 mm. The second transverse shoulder grooves include axially-internal slit-shaped portion with width of 0.5 to 2.0 mm and axially-external main portion at least 3.5 mm wide. The second transverse crown grooves include axially-internal slit-shaped portion with width of 0.5 to 2.0 mm and axially-external main portion at least 2.0 mm wide.

EFFECT: better tire noise characteristics without impairment of running characteristics over snow-covered road surface.

9 cl, 5 dwg, 1 tbl

Automotive tire // 2521033

FIELD: transport.

SUBSTANCE: invention relates to automotive winter tire tread design. Tire (1) has tread (2) containing central part (L1) covering from two sides the equatorial plane (7), and two shoulder parts. The central part (L1) is separated from shoulder parts (L2, L3) of tread by two first circumferential grooves (3, 6). At least two second circumferential grooves (4, 5) are located in the central part (L1). The second circumferential grooves (4, 5) determine margins of the central circumferential bar (10) containing multiple sipes (20) located in parallel to each other and at certain distance from each other. The second circumferential grooves (4, 5) have a mid line running as peak-to-valley scallops throughout tire length in direction along circumference. The mid lines with peak-to-valley scallops are mainly matching in phase with each other throughout tire length (1) in direction along circumference.

EFFECT: better operational properties when moving both over snowy and dry and wet road surfaces.

20 cl, 4 dwg, 1 tbl

Pneumatic tire // 2520265

FIELD: machine building.

SUBSTANCE: proposed tire comprises tread zone (A) located from vehicle inner side and tread zone (B) located on vehicle outer side. There are multiple slot-like drain grooves (32A, 32B) extending over tire width and formed in every block (31A, 31B). The number of blocks (31A) in said zone (A) is larger than that of blocks (31B) in said zone (B). Note here that slot-like drain grooves (32B) in blocks (31B) of zone (B) are configured to extend linearly along their depth. Note here that slot-like drain grooves (32A) in blocks (31A) of zone (A) are configured to extend in wavy manner along their depth.

EFFECT: better road grip on dry road and snow.

7 cl, 4 dwg

Pneumatic tire // 2513210

FIELD: transport.

SUBSTANCE: invention relates to tread pattern of tire designed to be used on dry road, ice- and snow-covered roads. Proposed tire comprises unidirectional tread pattern including right and left lengthwise grooves of the crown and crow rib arranged there between. Crown rib has first and second V-like grooves arranged by turns in the tire lengthwise direction. First V-like grooves extend from the left lengthwise groove of the crown. Second V-like grooves extend from the right lengthwise groove of the crown. First and second V-like grooves terminate nearby the rib while their V-like configurations have inflections located, in fact, at tire equator.

EFFECT: stable motion on dry road, ice- and snow-covered roads.

9 cl, 10 dwg, 1 tbl

Pneumatic tire // 2508996

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, namely, to tread pattern. Proposed tire comprises multiple circular main grooves extending in tire circumference and multiple running surfaces separated and composed by said circular main grooves in tread zone. Multiple running sections have multiple sipes. At least 90% of sipes located in inner side area represent are 2D sipes and at least 90% of sipes in outer side surface are 3D sipes. Tread zone comprises top and bottom rubber layers. Rubber hardness H1in at -10°C and rubber hardness H2in at 20°C of rubber top layer 151in in inner side area, and hardness H1out at -10°C and hardness H2out at 20°C of rubber top layer 151out in outer side area are related by relationships H1in<H1out and H2in<H2out.

EFFECT: better stability on dry and snowy surface.

18 cl, 9 dwg

Pneumatic tire // 2508995

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, namely, to tread pattern. Tire tread has circular major grooves extending in tire circumference and contact parts separated and composed on said circular major grooves. Every said central zone contact part and contact parts of right and left shoulder zone has multiple sipes. At least 90% of sipes located in inner side area represent are 2D sipes in central zone and at leas 90% of sipes in outer side surface are 3D sipes in shoulder zone. Every contact parts of right and left shoulder zones has multiple transverse side grooves arranged in definite order in tire circumference. The number N-ce of transverse side grooves in central zone contact part and the number N-sh of transverse side grooves in contact parts of right and left shoulder zones are relates as N-ce>N-sh.

EFFECT: perfected design.

20 cl, 7 dwg

FIELD: road vehicles.

SUBSTANCE: pneumatic tire tread cap has grooves limiting raised repetitive patterns, at least one of which is provided with first cuts and second cuts, each cut being limited by two main side surfaces interconnected by end surface. Bottom surfaces of first cuts and top surfaces of second cuts are functionally intercoupled so that, at any degree of wear of pneumatic tire tread, length of edges on rolling surface is at least 75% of length of said edges in new tire tread cap.

EFFECT: improved adhesion of tread and road at any wear, reduced noise in running.

11 cl, 12 dwg, 1 tbl

FIELD: automotive industry; tire industry; road vehicles.

SUBSTANCE: proposed pneumatic tire tread cap is provided with great number of cuts, mainly, cross-orientated. According to invention, some of cross cuts at no wear form on tread running surface zones in form of cavities with mean width exceeding or equal to 2 mm, and maximum depth Pt not exceeding 80% of thickness of tread cap subject to wear. Other cross cuts form on the same tread running surface notches of width less than 2 mm and depth not exceeding Pt. great number of notches continue in zones in form of cavities so that after uniform wear of tread cap, volume of zones in form of cavities, opening on new tread running surface is of value within 50% and 150% of volume formed by zones at no wear. Forming member contains thick and thin parts.

EFFECT: improved wheel tread-to-road adhesion during entire service life of pneumatic tire.

6 cl, 8 dwg

FIELD: tire industry.

SUBSTANCE: proposed tire tread has three ring grooves and great number of cross grooves limiting four rows of blocks arranged along circumference, namely, two axial external shoulder rows and two central rows along sides of equatorial plane. Cross grooves meet in equatorial plane in preset direction of tire rolling. Each cross groove of tread central rows has widening of cross section of mainly circular profile formed at equal distance from ends and designed for gripping of snow. To provide low noise level when running along dry road, front cross edge profiles of adjacent blocks of central rows contains at least two series curvilinear sections.

EFFECT: improved gripping on snow-covered road, provision of noiseless running along dry roads and increased wear resistance of tread blocks.

33 cl, 7 dwg

Tread of tire // 2288846

FIELD: tire industry; heavy-weight truck tires.

SUBSTANCE: proposed tire tread with relief pattern is formed by two circumferential grooves. Said grooves are limited by two ribs of mean width containing great number of cuts whose contours on contact surface, when non-worn-out, are arranged between two points of intersection A and B, AB segment forming angle α not exceeding 40° in cross direction of tread. Each cut 7 of mean width E contains sequence of sections of cut. Some of said sections of cut over entire surface parallel to contact surface in non-worn-out state and enclosed between surface in non-worn-out state and 2/3 of maximum depth of cut have contours forming mean angle β not exceeding 15° in longitudinal direction of tread.

EFFECT: increased tire life.

8 cl, 7 dwg

FIELD: road transport; heavy radial-ply tires.

SUBSTANCE: proposed tire has tread with number of circular grooves and number of cross grooves forming solid section circular rows in tread. Each solid section is provided with slots in front part of running surface.

EFFECT: increased wear resistance of tire.

4 cl, 3 dwg

Pneumatic tire // 2333842

FIELD: transport.

SUBSTANCE: invention relates to automotive tires. The tread body is furnished with a dropper running axially in a zigzag manner and deep into the tire, the said dropper having an invariable depth. It features the rigidity index F defined as shown below, varying in the dropper lengthwise direction. The rigidity index makes F=(1+φ1)x(1+φ2)x(1+φ3), where φ1 is the dropper amplitude (mm) on the tire body step; φ2 is the dropper amplitude (mm) across the body section perpendicular to the dropper line on the step surface; φ3 is the dropper ridge line amplitude, the ridge running deep down, if the dropper wall surface seen from above. More particularly, the dropper amplitude φ1 on the tire outside exceeds, in axial direction, the dropper amplitude φ1' on the tire equatorial plane, and the dropper amplitude φ2 on the tire outside exceeds, in axial direction, the dropper amplitude φ2' on the tire equatorial plane. Thus, an irregular tire tread wear property is combined with adequate operating properties on moistened and snow-covered road surfaces.

EFFECT: reliable steering on moistened and snow-covered road surfaces.

9 cl, 22 dwg, 2 tbl

FIELD: transport.

SUBSTANCE: tyre for vehicle wheel contains tread band having tread pattern formed by at least two annular parts located in axial direction placed near each other. At least annular part have first geometric module repeated many times along direction of annular tyre length. First geometric module contains at least two shoulder blocks levelled-off in annular direction along side edge of tread band and separated by grooves positioned across annular outstretch direction of tyre and elongated ridge limited by two grooves inclined against annular outstretch direction. Elongated ridge is separated into many interim blocks with regard to axial outstretch of tread band separated by number of slots made essentially across elongated ridge.

EFFECT: tyre performance characteristics are improved.

58 cl, 7 dwg, 2 tbl

FIELD: automobile production.

SUBSTANCE: invention pertains to vehicle tyre protectors. Tyre tread for pneumatic tyre contains raised pattern that consists of many raised elements in a form of blocks and/or salient angles, limited by grooves. Many of raised elements are equipped with at least one notch oriented along some average direction. The direction is defined as angle between right line passing through the ends of this notch at running surface and transverse direction of tyre tread. Each notch is limited by walls made of rubber mixture and contains at least two areas, average orientation of which, measured in relation to transverse direction, differs from average orientation of this notch. At any rate, some of the said areas with orientation that differs from average direction of this notch have at least one projection that locally decreases the width of this notch by 50% of its maximum width.

EFFECT: improvement of tyre tread traction.

9 cl, 6 dwg

FIELD: transportation.

SUBSTANCE: invention is related to motor industry. Pneumatic tyre comprises multiple blocks on its tread, which are defined with grooves installed along periphery of tyre, substantially, in its circumferential direction, and multiple cross grooves that cross grooves arranged in circumferential direction. All grooves are formed on surface of tyre tread. At that slot-like grooves are arranged on tyre tread, every of which has at least one pair of inclines surfaces, installed in direction of depth of this groove inside block, separating every such block on its front side, and pair bulges installed on opposite walls of such slot-like groove. Every pair of specified bulges has total height equal to width of slot-like groove, and specified bulges are formed on at least one specified pair of inclined surfaces of slot-like groove, besides bulges are arranged one opposite the other. Method for tyre manufacture is realised with the help of vulcanisation die mould, in which multiple special knives are installed, being designed to form according slot-like grooves in tyre tread.

EFFECT: tyre adhesion properties improve.

6 cl, 27 dwg

Air tire // 2381109

FIELD: automotive industry.

SUBSTANCE: proposed air tire comprises blocks arranged on its tread and separated by multiple peripheral lengthwise grooves 3 and multiple crosswise grooves 5. Said blocks have slot-like drain grooves arranged along tire circumference. Inner peripheral slot-like drain grooves run straight along tire radial direction, while outer peripheral slot-like drain grooves represent radial zigzag patterns.

EFFECT: improved controllability irrespective of road carpet.

9 cl, 7 dwg

Up!