Sport footwear sole, particularly footwear sole for racing skis or telemark style skiing

FIELD: individual supplies.

SUBSTANCE: sport footwear sole, particularly footwear sole for racing skis or telemark style skiing consists of a back or heel part where heel is placed, and a front part or toe part. The latter is cup-shaped and made from solely hard material, mainly plastic. Underneath, the sole is provided with a cover piece located on the front and back part. The cover piece is made from relatively soft, rubber-like material. There are several cross grooves made in the sole bottom at least within zone (M) located in metatarsophalangeal joint of foot flexure. The preset overall sole thickness and height (h) accordingly, is defined by the said cover piece thickness plus the thickness of those sole parts made from hard materials. The front part of sole at least from the upper side, is made slightly cup-shaped and smooth, and at footwear bottom. Within zone (M) of metatarsophalangeal joint of foot flexure, the sole maximum thickness is 50%, namely 30-35% from the overall thickness (h) of sole provided that preset overall sole thickness (h), which is comprised of hard and soft materials thicknesses, is invariable. In addition to cross grooves available in cover piece at least one guiding longitudinal groove is made. The bottom of part of cross and/or longitudinal grooves is made in the front part of the sole with relatively hard material.

EFFECT: technical result provides for footwear sole using according to invention and lies in applying simple technology of manufacture; so, sole has maximum bending elasticity and flexibility in metatarsophalangeal joint of foot flexure without loss of side stability chosen as structural basis.

11 cl, 3 dwg

 

The present invention relates to sole sports shoes, especially shoes cross-country ski or Shoe for skating style Telemark, which consists of the rear or heel part, which is the heel, and from the front or toe portion slightly dished form, and is entirely made of a relatively hard material, especially of plastic, and which is supplied from the bottom located on the site of its front and on the area of its rear plate of relatively soft, especially rubber-like material, the thickness of which together with the thickness of the respective made of a more rigid material parts of the soles is determined it specified the total thickness, respectively the height.

The soles of this type are well known. Shoes with this sole has for many years produced and sold by the company Rottefella AS under the trademark "NNN". From the bottom of such soles have two longitudinal guide grooves that run along the entire length of the sole and interact with the response of the longitudinal guide ribs on the respective plate ski bindings, and also have intersecting with them transverse grooves. From the bottom on the front end of the sole has an open bottom recess in which is located a transverse axis, which serves to provide the opportunity for the free lift of the heel swivel Shoe to the ski attachment.

From the top of the sole is provided with longitudinal and transverse ribs bounding the respective notches that uses a minimum amount of going for the manufacture of soles material can give it maximum stability, primarily torsional rigidity. The above-mentioned longitudinal guide grooves are made not only in the grip of the soles, but also in the sole. The result is significantly reduced Flexural rigidity (Flexural rigidity) of the sole and primarily in the area, located on a plot of bending of the foot at the metatarsophalangeal joint. To solve this problem, EP 0787440 B1 was asked to run the sole of the sports Shoe of two parts, the rear of which is hard, and the front is made of soft material. However, the disadvantage of this solution consists in the impossibility of making the whole soles entirely of the same material, for example, by injection molding. For this reason, the manufacturing of these shoes is associated with high costs, and in EP 0787440 B1 in this respect and serves to interconnect the front and rear of the sole vnahlestku.

From DE 3113942 A1 (closest analogue of the invention) are known sole of the sports Shoe, especially Shoe for cross-country skiing, which consists of the rear or heel part, which is the heel and front of the her or wear parts and is made of a relatively rigid material, primarily of plastic, and which is supplied from the bottom located on the site of its front part and parcel of her rear plate of relatively soft, especially rubber-like material, in which the side of the bottom, at least within the zone, located at the bent portion of the foot in the metatarsophalangeal joint of the executed one or more transverse grooves and the thickness of which together with the thickness of the respective made of a more rigid material parts of a sole defined defined total thickness, respectively, the height of the sole.

Based on the foregoing, the present invention was based on the task to improve the sole specified in the beginning of the description of the type, which, with the simple technology of its manufacture would have the maximum Flexural elasticity on the bent portion of the foot in the metatarsophalangeal articulation without loss when selected for the design of lateral stability and primarily torsional rigidity of the base and connected to the top of her boot.

The object of the invention is the sole sports shoes, especially shoes cross-country ski or Shoe for skating style Telemark, which consists of the rear or heel part, which is the heel of the front or toe portion and is made of a relatively well the tough material primarily of plastic, and which is supplied from the bottom located on the site of its front part and parcel of her rear plate of relatively soft, especially rubber-like material, in which the side of the bottom, at least within the zone, located at the bent portion of the foot in the metatarsophalangeal joint of the executed one or more transverse grooves and the thickness of which together with the thickness of the respective made of a more rigid material parts of a sole defined defined total thickness, respectively, the height of the sole.

The aforementioned task is solved according to the invention due to the fact that the front part of the sole is made slightly dished form and entirely smooth from both top and bottom, and invariably a given total thickness, consisting of the thickness of the hard and soft materials, thickness at least in the zone, located on the plot of the bending of the foot at the metatarsophalangeal joint is a maximum of about 50%, especially from about 30%to 35%, of the total thickness, and in addition to the transverse grooves in the cover plate is made of at least one longitudinal guide groove, and the bottom at least part of the longitudinal and/or transverse grooves formed in the front part of the sole specified relatively hard material is.

In accordance with this invention is that at least in the front part of the soles has no grooves or ribs, deteriorating the flexibility of the sole at least in its zone, located on the plot of the bending of the foot at the metatarsophalangeal joint, and especially around the so-called axis of bending of the sole on the site metatarsophalangeal joint of the foot. It should be noted that the bending axis of the sole on the site metatarsophalangeal joint of the foot, strictly speaking, is not a line but a zone in the form of a strip of a certain width, passing transversely to the longitudinal direction of the sole, namely passing obliquely to the longitudinal direction of the sole from front to back from the inner side of the sole to its outside.

Due to the fact that the front part of the foot at the same time and from the top, and the bottom is entirely made of a smooth and guarantees given total thickness is at least in the zone, located at the bent portion of the foot in the metatarsophalangeal articulation, significantly reduced thickness, which is a maximum of about 50%, especially from 30 to 35%, of the total thickness, consisting of the thickness of the hard and soft materials, with outer soles and from the bottom and from the top there are no grooves or ribs, deteriorating the flexibility of the sole at least in its zone.is defined in the bent portion of the foot in the metatarsophalangeal joint what makes the claimed sole under the same requirements for strength and durability and when using the same material, and considerably more subtle, and therefore more elastic than the nearest equivalent. In accordance with this front part of the sole, made of a more rigid material is a thin-walled flat "Cup" with mostly smooth top and bottom sides. Slightly dished form the front part of the soles effectively provides the desired rigidity, in particular torsional rigidity, with thin soles basis without the need for grooves and ribs. All grooves, at least in the front part of the sole, are mostly only in the grip of a softer material.

Another advantage of the invention in part is smooth on both sides perform a rigid base soles is that it does any processing basics, whether it be drawing a pattern of a different material, or improve the functional qualities of the sole (for example, nanananana water-repellent coating), is particularly simple and high-tech.

Finally, bilateral smooth rigid base of the sole allows you to weld or glue from the bottom of the various pads on the entire surface of the sole.

Proposed in the invention of the sole preferably made of plastic with fashion the LEM of elasticity, which is from 200 MPa to 200 HPa, primarily from 350 MPa to 200 HPa, and the value of which is determined by the thickness of the sole at its front end so that the higher the elasticity of the specified thickness in percentage terms more than, less elasticity. In other words, the higher the hardness of the material of the sole, the finer should be the material of the sole at least in the zone, located on the plot of the bending of the foot at the metatarsophalangeal joint, with correspondingly greater thickness over the soft lining of the sole in this area.

The cover plate from the bottom can be welded or glued onto the sole.

In the rear part of the sole bottom at least part of the longitudinal and/or transverse grooves can also be formed of a relatively rigid material from which it is made.

The depth of the longitudinal(s) of the groove(s) may be approximately equal to its depth, preferably overlapping with it(them), transverse grooves.

The implementation proposed in the invention of a sole in accordance with a variant, according to which each of the transverse grooves at least in the front part of the sole has the form in terms of the arcuate curved back shape allows for constant flexibility of the soles to increase its resistance, primarily its torsional rigidity.

On the front end of the sole may be ipodnano open towards the bottom of the recess, where the at least one transverse axis for the swivel ski mount. This deepening may be limited laterally by two edges made in one piece with the sole or lining of softer material.

It should be noted embodiment of the proposed invention in the sole, whereby the side walls, bounding on the front end of the sole recess to accommodate the transverse axis, sealed, connected an anchor elements, primarily from metal. Such anchor elements are required primarily when securing a transverse axis in a relatively soft pad soles. It is obvious, however, that provided on the front end of the sole recess to accommodate the transverse axis and can traditionally limit two side walls made of the same solid material as the whole sole in one piece with it.

It should also be noted that when consistently given the total thickness of the soles are thicker than the hard material of which it is made, in the front part of the sole should continuously increase at least in the backward direction, starting from the zone, located on the plot of the bending of the foot at the metatarsophalangeal joint. The rear part of the foot, especially the heel, it is preferable to perform Trad the traditional way, i.e. from the top reduce running on its production and reduce its weight by fill.

To reduce the amount of material going into the manufacture of soles, as well as reducing its weight sole at the back, especially in the area of the heel, can be supplied from the top of the fill.

Below we propose the invention of the sole of a sports Shoe in more detail on the example of the preferred option it is in progress with reference to the accompanying drawings on which is shown:

figure 1 is a bottom view in perspective proposed in the invention soles,

figure 2 is a view in plan on an enlarged scale shown in figure 1 of the sole and

figure 3 is a longitudinal section is shown figure 1 and 2 soles plane III-III of figure 2 on a smaller scale.

Figures 1 and 2 as shown below outsole 10 ski boot for cross-country skiing. The sole 10 is provided with a rear or heel part 11, on which the heel 13, and from the front or toe portion 12 slightly dished form, i.e. having the form of a flat bowl, and is made of a relatively hard material, especially of plastic, and comes from the bottom located on the front section and the rear section of the parts of the plate 14 from a relatively soft, especially rubber-like, material. The thickness of this lining 14 together with the thickness of the respective parts 11 and 12 sole defined defined total thickness, accordingly, the height "h"indicated in figure 3 in zone "M", located on the plot of the bending of the foot at the metatarsophalangeal joint. The front part 12 of the sole 10 at least from its top, as shown in the drawings example - and bottom mostly made entirely smooth. In addition, the front part 12 of the sole 10 with consistently given the total thickness "h"consisting of the thickness of the hard and soft materials, has at least in the area "M", located on the bent portion of the foot in the metatarsophalangeal articulation, significantly reduced the thickness "d", which is a maximum of about 50%, primarily according to shown in the drawings example 25-30%from that specified the total thickness "h".

The sole is made of plastic with the above modulus of elasticity. It can be produced in a simple way by injection molding. A pad of soft material below newarrivals or glued on a more solid material.

From the bottom of the sole has two longitudinal guide grooves 15 and several transverse grooves 16, with all such grooves are made only in the cover plate 14 of the softer material. The bottom of at least the longitudinal grooves 15 in the front part of the sole is formed of a relatively hard material. Longitudinal and transverse grooves preferably run approximately od is nakasai depth.

The transverse grooves 16 in the front 12 and rear 11 parts of the soles is made arcuate curved back, as clearly seen in figures 1 and 2.

On the front end of the sole is made open at the bottom of the recess 17 in which is located a transverse axis 18 to swivel Shoe with not shown in the drawing ski mount. The sides of the recess 17 is limited to two ribs 19, made of the same solid material as the outsole. In another embodiment, the recess may be limited and the cover plate 14. In the latter case, the side walls bounding the recess 17, it is advisable to plug connected to the transverse axis 18 of the metal anchoring elements.

As shown in figure 3, at a constant predetermined total thickness "h" thickness "d" of the front part 12 made of a more rigid material soles, continuously increases from zone "M", located on the bent portion of the foot in the metatarsophalangeal joint, backward and forward. Thus the length of the area "M", located on the bent portion of the foot in the metatarsophalangeal joint is determined by the dimensions in the area of hard and soft materials.

The heel 13, as shown first in figure 3, may be of conventional design. In other words, from the top of the heel has a reduce running on E. what about the manufacture and reducing the weight of the notches 20.

It is necessary to emphasize once again that the implementation of the front part of the sole 10 is smooth, having the form of a flat bowl allows transverse groove depth corresponding to the depth of the longitudinal guide grooves. Transverse grooves should not be in the direction of thickness of the sole opposite the grooves running from its top.

All disclosed in the present description, the signs are essential to the invention in so far as they are individually or in combination with each other are new in relation to the level of technology.

1. Sole sports shoes, especially shoes cross-country ski or Shoe for skating style Telemark, which consists of a rear part (11), which is the heel (13), and from the front part (12), entirely made of a relatively hard material, especially of plastic, and which is supplied from the bottom located on the site of its front and on the area of its rear plate (14) from a relatively soft, especially rubber-like material, in which the side of the bottom at least within the zone (Meters), located on the bent portion of the foot in the metatarsophalangeal joint of the executed one or more transverse grooves and the thickness of which together with the thickness of the respective made of a more rigid material parts of the sole (10)is determined by the specified total thickness, accordingly, the height (h) of the sole, characterized in that its front part (12) is made slightly dished form and entirely smooth from both top and bottom, and invariably a given total thickness (h)resulting from the thickness of the hard and soft materials, the thickness (d) at least in the zone (Meters), located on a plot of bending of the foot at the metatarsophalangeal joint is a maximum of about 50%, especially from about 30%to 35%, of the total thickness (h), and in addition to the transverse grooves (16) in the cover plate is made of at least one longitudinal guide groove (15), and the bottom at least part of the longitudinal and/or transverse grooves (15, 16) formed in the front part of the sole (10) indicated a relatively hard material.

2. Sole according to claim 1, characterized in that it is made of plastic with an elastic modulus that ranges from 200 MPa to 250 HPa, and the value of which is determined by the thickness (d) of the sole in its front part (12) so that the higher the elasticity of specified thickness (d) as a percentage of more than at less elasticity.

3. Sole according to claim 1 or 2, characterized in that the cover (14) from the bottom welded or glued to the sole (10).

4. Sole according to claim 1, characterized in that the rear part of the sole (10) the bottom of at least part of the longitudinal and/or transverse ditches is to (15, 16) is also formed of a relatively rigid material from which it is made.

5. Sole according to claim 1 or 4, characterized in that the depth of the longitudinal (s) of the groove (s) (15) approximately corresponds to the depth, preferably overlapping with it(them), transverse grooves (16).

6. Sole according to claim 1, characterized in that each of the transverse grooves (16) at least in the front part (12) of the sole has a plan arcuate curved back shape.

7. Sole according to claim 1, characterized in that its front end is made open toward the bottom of the recess (17), where the at least one transverse axis (18) for articulated connection to the ski attachment.

8. Sole according to claim 7, characterized in that the recess (17) laterally limited by two edges (19), made in one piece with the sole or plate (14) of the softer material.

9. Sole according to claim 7 or 8, characterized in that the side walls bounding the recess (17), embedded connected to the transverse axis (18) anchor elements, especially from a torsionally rigid material.

10. Sole according to claim 1, characterized in that, when consistently given the total thickness (h) thickness (d) is more rigid material in the front part (12) of the sole (10) continuously increases at least in the backward direction, starting from the zone (Meters), located on the bent portion of the foot plus elangovan the joint.

11. Sole according to claim 1, characterized in that it is in its rear part (11), primarily in the area of the heel (13), is supplied from the top reduce running for its manufacture of the material and reducing the weight of the slots (20).



 

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