Brake disk

FIELD: automotive industry.

SUBSTANCE: invention relates to automotive industry, namely, to disk brakes. Proposed brake disk is made in cast iron and represents a sliding disk of the disk-type brake. Proposed disk comprises outer edges, inner edges and alternating teeth and gaps along the said inner edges. Note here that it incorporates means designed to reduce fracture formation caused by irregular characteristics of the brake disk elongation. The disk features zones with reduced material thickness in every tooth, as compared with that along the radius outside the gaps between teeth, and has no similar thickness reduction on gaps between teeth. Aforesaid material thickness reduction zones formed in disk casting are located in transition between teeth and main part of brake disk, and pass partially along imaginary circumference with radius of the gap lower parts. Aforesaid zones represent either zones not forming through holes, or zones representing axial openings or holes. Arc-like transition parts with adjacent teeth and or rectilinear or almost rectilinear part between the said transition parts form lower part of every gap. Each transition part features radius R, while rectilinear part length is smaller than 1.5R.

EFFECT: reduced risks of fracture formation, higher strength.

10 cl, 3 dwg

 

The technical field

The invention relates to a brake disk used in a disk brake having one or more sliding or slip disks on the hub, the Central part, which is connected to a hub, or any similar items. The present invention relates to the brake discs of this type that have teeth or the like on the inner periphery.

The level of technology

When using disc brakes, having one or more sliding disks, the disks are usually mounted on the hub or other Central parts rotating together with the dual wheel. To simplify the description, the term "Central part" is used in a broad sense and should be understood as covering any item (or part), receiving the brake (s) disk (s), including the hub. The Central part usually has slots, teeth or the like on the outer periphery, designed to interact with the teeth, slots or the like on the inner periphery of the brake disc. Thus, disks fixed in the rotation direction relative to the Central parts, but can move in the axial direction at the Central part. On the same Central details of one or more drives can be installed so that they will be fixed in the axial direction, while one or more drives us is the Plac CE with the possibility of moving in the axial direction. Contact surface of teeth, splines or the like can be rectilinear or curved.

In this description the expression "radial", "axial" and similar expressions are used in relation to the brake disc. Thus, the "axial" is the direction of the axis of rotation of the brake disc. "Tangential direction" in the sense used here refers to the direction of rotation of the brake disc. Thus, the "tangential direction" perpendicular "radial direction", "axial direction".

The disc brake one or more of brake pads and one or more brake discs biased toward each other when the brake is being applied. Provided interrelated rotation of the Central parts of the host drives, and dual wheels. Thus, the braking of the rotation of the brake discs will be transmitted, leading to inhibition of the paired wheels.

When braking connection between the Central part and the disks are exposed to mechanical stresses, which are caused by large braking effort, heating, etc.

Brake disc heats up a lot when braking due to the fact that it absorbs the kinetic energy of the vehicle. Heating of the disk leads to thermal expansion. However, the disk can have different degrees of thermal expansion due to uneven load, the VA. The inner part, i.e. the part located closest to the Central part can be heated to a much lesser extent compared with the main part, i.e. the rest of the brake disc. Less heat the inner part of the disk is often caused by a toothed connection with the Central part, which protects this area from the actual compression, bending and heat caused by the brake pads. Uneven heating causes the tangential stress and the possible formation of cracks in the brake disk.

The inner part of the disk with the teeth, provides uneven resistance forced the tangential stress caused by uneven heating of the disk. This leads to uneven distribution of the forced voltage so that material located on the outside radius of the gap, will receive a greater share of total tangential stress.

Large bending stresses occur at the bases of the teeth during braking. If the brake is used to generate a large braking torque when the brake disc is uneven temperature distribution described above, the bending stress can add additional stress to the material in the vicinity of the gap and the radius of the outside towards them. Anymaterial already subjected to strong deformation due to thermal expansion of the material in the main part of the disk, and the extra voltage can create a very high overall stress of the material.

The invention

One objective of the present invention is to avoid cracks in the brake disc caused by the uneven elongation characteristics, to the extent possible. The main problem with the brake disc, is that it is unevenly heated during braking. Effects from non-uniform heating increased by the uneven characteristics of the lengthening of the disk, while these non-uniform elongation characteristics to a large extent due to the presence of teeth. To avoid cracks above-mentioned negative effects are reduced to the maximum extent possible.

One possibility of reducing the risk of cracking is to ensure the availability of relatively wide gaps between adjacent teeth.

Another possibility is to reduce the thickness of the material in each tooth and/or in areas near the tooth. Alternatively, at least some of the zones with a reduced thickness of material may be replaced by holes in each tooth and/or in the area near the tooth. The holes may have a length of either in the axial or in the radial direction. Holes passing in either direction, and other areas with a reduced thickness can the be combined in many different ways. Due to these measures the resistance forced the tension in the teeth and in the material located radially outside of the teeth, will be reduced, and this will facilitate the distribution of forced stress more evenly between the material on the outside of the teeth, and the material on the outside with respect to the gaps between the teeth. Material thickness is determined in the direction of the axis of rotation of the disk. In addition, the thickness of the material is defined as the useful thickness, i.e. the size of the holes are subtracted from the overall external dimensions.

An additional possibility is to optimize the shape of the bases of the teeth and the base of the gap between adjacent teeth. If the radius [rounding] at the base of the tooth is relatively large, and the ground clearance is straight or almost straight line segment, a more uniform stress distribution is achieved in the brake disk. In practice, the ground clearance can often have a slight bend due to, for example, technological operations. Through proper calculation of the radius of the transition with its correlation with the size of the straight part of the base of the gap can reduce the risk of cracking.

One additional possibility is to perform a brake disk with variable properties for elevated the I of its ability to withstand voltage. The material in the area of the teeth can be treated to withstand higher voltage in comparison with the material in the rest of the disk. Brake discs are often made of cast iron, because it has good conductivity. Iron in its most common form of flake graphite is a brittle material with a low ability to withstand the induced voltage. Through the use of certain alloying elements and well-regulated process of casting the cast iron can be modified to obtain the graphite particles or in the form of spheres, with the resulting iron is called pig iron with spheroidal graphite or vermicular form, thus obtained iron called soft grey cast iron. In practice regulate cooling during casting or hot bulk forming, in combination with the choice of material allows you to get the desired effect, which is manifested in different properties of the various parts of the brake disk.

Additional objectives and advantages of the present invention will become apparent to a person skilled in the art after reading the following detailed description of preferred in the present embodiments of the invention.

Brief description of drawings

Hereinafter the invention will be described additionally by what redstem examples and with reference to the accompanying drawings, on which:

figure 1 is a side view of a brake disc according to the present invention;

figure 2 is a partial view of the inner periphery of the disk 1, and

figure 3 is an alternative implementation of a brake disc according to the present invention.

Detailed description of preferred embodiments of the invention

As shown in figure 1, the brake disk 1 has a number of teeth 2, separated by gaps 3. The brake disc 1 is circular with an outer periphery 4 and the inner periphery 5. The teeth 2 are located on the inner periphery 5 of the brake disk 1. The brake disc 1 is installed on the hub or other Central parts (not shown) of the disk brake. The teeth 2 of the brake disc 1 is designed to interact with the teeth, slots or the like in the Central part. The disk 1 is installed on the Central part with fixing it in the direction of rotation, and install it either with fixation in the axial direction, or they can move in the axial direction. Specialist in the art will understand that the number of teeth 2 and gap 3 can be changed for different brake discs 1. In addition, the shape, location and size of the teeth 2 and gap 3 can be varied as between different disks 1, and in one disc 1. Group of teeth 2 may be, for example, separated by gaps, with higher razmera compared to the gaps between the teeth of the group in the same brake disk.

The brake pads 11 or the like cooperating with the brake disc when the brake is being applied, as is well known in the art. Specialist in the art it is clear that the design of the remaining parts of the disk brake can be changed. With this in mind, disc brake as such will not be described here in detail.

The teeth 2 are shown as having straight lateral surface 6 of the teeth. However, the invention is not limited to rectilinear side surfaces 6 of the teeth, and it can be applied to the side surfaces of the teeth, having any curved shape. Figure 2 shows the width s of the tooth and step R. In this description, the width s of the tooth for teeth curved shape is defined as the width of the chord at the start of the circle. Step R curved teeth, of course, also taken on the starting circle. The initial circle is an imaginary circle with a radius equal to the average value of the radii of the imaginary circles at the tops of the teeth of the disk and at the base of the gaps between the teeth of the disk. The step value R and the width s of the tooth determines the size of the gap 3 in the tangential direction. To reduce the risk of cracking step R must be considerably greater than the width s of the tooth. This is achieved if the following functional dependence: p>1,6s, preferably p>2s and enableprefetcher p> 2,5s. This will lead to reduction effect, which is manifested in the fact that material located radially outside with respect to the gap 3, takes an extremely large proportion of the total forced tangential stress.

Passage 8 at the base of each tooth, one tooth 2 goes into the gap 3, has the form of an arc with a radius R. the base of the gap 3 between transitions 8 forms a straight line segment 7. In order to receive a positive effect from design transitions 8 and the straight part 7, a straight line segment 7 should have a length smaller than 1,5R, preferably less than 1,0R and most preferably less than 0,6R. Even despite the fact that the gap is shown as having a straight section 7, as described above, the base may be slightly curved.

As shown in figure 2, the openings or holes 9 may be formed in the teeth 2, in the zone located radially outside of the teeth 2 and/or in the transition zone between the teeth 2 and the main part of the brake disc 1. The same effect is achieved if the material thickness is reduced, without the formation of holes in zone 10 in the teeth 2, directly radially outside of the teeth 2 or in the transition zone between them. As used in this description, the expression "area of reduced material thickness", and similar expressions typically include what I like to zones 10, having no through hole, and the zones having apertures 9.

Figure 3 shows an additional alternative, related to the holes. Shows the holes have a length in the radial direction. The holes 13 may be a through hole passing all the distance from the outer periphery 4 through one tooth 2 and forming an aperture 15 on the side facing inside. Other openings 14 are blind holes passing radially from the corresponding tooth 2 of the brake disc 1 and having an aperture 15 on the side facing inside. In some embodiments, the implementation of the hole 13, 14 ends at a small distance from the side facing inward, and in this case, the tooth will have a continuous internal surface of the tooth, as shown by the reference position 16. There is a possibility of execution of the holes 13, 14 of different lengths in the same brake disk 1, without increasing the risk of cracking. Regardless of the length of the holes 13, 14 and regardless over whether they are to the outer or to the inner peripheries 4, 5, they should always pass through an imaginary circle 12 on the radius passing through the bottom (section 7) gap 3 between the teeth of the disk. Holes 13, 14 may be round, oval, square or any other polygonal cross section. R is dialine holes 13, 14 located in the teeth 2 and never in the gap 3 of the brake disc 1.

Even a small reduction of the material thickness in the axial direction are preferred. Specialist in the art will understand that the precise shape of the zones with reduced material thickness may vary, regardless of whether the zone of the holes 9, 13, 14 or zones 10 without through holes. Regardless of whether the holes 9, 13, 14 or zone 10 of reduced thickness or use a combination of holes 9, 13, 14 and zones 10 of reduced thickness, the induced voltage is distributed more evenly. Zone 10 with a reduced thickness or holes 9, 13, 14 are typically formed by casting or hot bulk forming disk 1, but, needless to say, they can be obtained separately by machining. Holes 9, 13, 14 or zone 10 with a reduced thickness is preferably located partially on an imaginary circle 12 on the radius passing through the bottom (section 7) gap 3 between the teeth of the disk.

By adding the material of the brake disc 1 various properties in various parts of the improved ability to withstand load. As a result, the risk of cracking is reduced. The brake discs 1, made of cast iron, graphite can be converted to spherical or worm-like shape in the area of the teeth 2, is about as graphite main part of the disk 1 has a flaky shape. This effect can be achieved through the use of controlled cooling during casting in combination with an appropriate material composition, it is possible with carefully selected fractions of magnesium.

Reducing the thickness or different material properties in the brake disk 1 must be provided in such number and must be configured and placed so that was achieved given the advantages in terms of expansion. At the same time should not be given too strong a negative influence on the strength of the teeth 2 on the curve and their ability to withstand the pressure in the contact zone.

Taking one or more of the above measures will considerably reduce the risk of cracking. Specialist in the art will understand that the above measures can be used in any combination.

1. Brake disc, made of cast iron and used as moving along the axis of the disk in the disk brake and having an outer periphery, an inner periphery and alternating teeth and gaps along the inner periphery, characterized in that it has means for reducing the formation of cracks caused by the uneven characteristics of the lengthening of the brake disc by the fact that the disk has a zone with a reduced material thickness in each tooth compared to that is the community of the material, located directly on the outside radius of the gaps between the teeth, and made without any similar reductions in the gaps between the teeth, providing a more uniform distribution of pressure between the material on the outside of the teeth and the material outside the gaps, and areas of reduced material thickness formed during casting of the disk, located at the transition between the teeth and the main part of the brake disc and partially pass through an imaginary circle with a radius of the lower parts of the gaps, and areas of reduced material thickness are either area, not forming a through-hole or zone in the form of axial openings or holes, the lower part of each gap formed arcuate transition portions with adjacent teeth and straight or nearly straight part between the transitional parts, and each of the transition portion has a radius R, and the length of each straight or nearly straight part is less than 1,5R.

2. The brake disk according to claim 1, characterized in that at least some of the zones with reduced material thickness are radial blind holes, ending at a distance from the inner and/or outer peripheries of the brake disk.

3. The brake disk according to claim 2, characterized in that each radial hole passes through the tooth.

4. That is mosney disk according to claim 1, characterized in that the side surfaces of the teeth are straight or have the shape of arcs.

5. The brake disk according to claim 1, characterized in that the ratio between the pitch p and the width s of the tooth inner periphery is R>1,6s, preferably p>2,0s and most preferably p>2,5s.

6. The brake disk according to claim 1, characterized in that the transition area between the sections of each gap is straightforward.

7. The brake disk according to claim 1 or 6, characterized in that the length of each straight or nearly straight section is less than 1,0R, preferably less than 0,6R.

8. The brake disk according to claim 1, characterized in that it is made with different properties in different parts to reduce the risk of cracking.

9. The brake disk according to claim 8, characterized in that it is made of cast iron with spherical graphite or vermicular forms in the area of the teeth, while graphite is the main part of the brake disc has a flocculent form.

10. The brake disk according to claim 9, characterized in that the shape of the graphite in the cast iron attached through controlled cooling during casting of the brake disc.



 

Same patents:

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, particularly, to clasp brakes. The propose clasp brake incorporates a caliper enveloping one or more brake plates, a hub or a part linked up wit the hub. Spreader bars are arranged between the brake disk and hub or the part linked up wit the hub. The spreader bars are arranged to prevent contact between brake plate spline end faces and the hub spline end faces, or the part jointed to the hub, at whatever radial shift of the brake plate relative to the hub or the part jointed thereto. At least, one part of the spreader bar features such sizes and rigidity relative to the brake plate, hub or part splines that, at whatever radial shifts of the brake plate to the hub or part jointed thereto, all radial forces are transmitted from the brake plate to the hub or the part jointed to it only via, at least, one part of the spreader bar. The sizes are selected so as to provide a contact between the brake plate spline end faces those of the hub or the part jointed thereto in rotary engagement between the brake plate and hub or the part jointed thereto to transmit rotary motion in braking.

EFFECT: damping radial impacts or radial shifts between brake plate and hub, particularly, between end faces of appropriate splines.

13 cl, 9 dwg

FIELD: transport.

SUBSTANCE: clasp brake incorporates a caliper with one or more brake-shoe linings surrounding one or more brake disks. One of the brake disks slides on over the central part representing a hub, sleeve or the like part. The said central part is fitted on the wheel axle or the like part. The disks are coupled with the central part with the help of teeth, splines or the like parts so the disks cannot rotate but are fitted to slide on along the axle. The contact parts of the teeth or the like parts of at least one disk and/or of the central part feature an arc-like shape if seen along the wheel axle. The contact parts represent the parts of the teeth surfaces to be engaged with each other with the brake released. The said contact parts of every tooth and/or spline of the said central part feature the arc-like shape with the total arc length exceeding 360°/Z, and preferably larger than 2(360°/Z), where Z is the number of teeth of the disk and central part respectively.

EFFECT: reduced noise and vibration with brake released, higher wear resistance in interface between brake disks and central part.

15 cl, 13 dwg

Brake disk // 2277192

FIELD: mechanical engineering; vehicle multiple-disk brakes.

SUBSTANCE: proposed brake disk contains friction member made of carbon composition with rectangular slots uniformly spaced over circumference in each of which two metal U-shaped load-bearing clamp-like inserts are fitted. Each such clamp engages by walls with side surface of slot and end face surfaces of friction member, being secured on disk by rivets. At least two vertical cuts pointed to each other and displaced relative to each other are made in each clamp on walls in contact with end face surfaces of friction member. Cuts are made to provide elastic deformation of clamp and its mounting on friction member with preload to guarantee locking of clamp to prevent its turning relative to axis of rivet.

EFFECT: improved reliability and increased service life of disk owing to prevention of destruction of friction member made of monocarbon under action of thermal, power and vibration loads.

3 dwg

Disk brake // 2269695

FIELD: mechanical engineering.

SUBSTANCE: disk brake comprises support that is rigidly connected to the brake and embraces one or more brake disks, at least one stop plate, and set of braking linings. The brake disks are mounted on the rotating hub without permitting rotation with respect to the hub and for permitting movement in the axial direction with respect to the hub by means of springs for transmitting brake moment from the brake disk to the hub. The braking linings are mounted for permitting movement in the axial direction inside the support that undergoes loading on the brake linings. The support has an opening through which the brake lining can be inserted or removed.

EFFECT: enhanced reliability.

13 cl, 15 dwg

FIELD: mechanical engineering.

SUBSTANCE: surface of the rotor is subjected to electric-spark grinding or electro-erosion treatment. The part of the rotor of the braking mechanism to be treated by electro-erosion is made of a conducting material, preferably of ferrous metal, iron, and gray cast iron. The braking disk of the rotor is solid or ventilated.

EFFECT: enhanced reliability.

60 cl, 4 dwg

FIELD: mechanical engineering.

SUBSTANCE: disc has assembly bulge for fastening to nave of transportation vehicle wheel and back band connected with bulge and having opposite surfaces of braking to provide interaction with brackets of brake's support to have an breaking effect onto transportation vehicle. At least one braking surface has at least one pair of channels, which have to be reflectively symmetrical to radius of disc. Channels pass in such a manner to embrace the whole thickness of back band, which intends for interaction with brackets. Continuity of each channel is provided along its total length. All four channels of at least one pair of channels pass the route which has at least one straight part and one curved part. Each channel of any pair of channels has at least a part of its route, which is located close to inner edge of back band and is oriented at radial direction mainly. Moreover mentioned channels of at least one pair of channels do not cross each other. All four channels pass the route without being damaged. Any channel passes the route from head or inner end to tail or inner end. The end mentioned is closed with dead edge where side walls of channel connect to each other.

EFFECT: improved efficiency of operation; improved reliability of operation of baking system.

27 cl, 7 dwg

FIELD: transport mechanical engineering.

SUBSTANCE: ventilated disk comprises friction ways connected with the bearing hub of the disk through connecting members made of studs distributed over the periphery of the bearing hub of the disk. One end of the stud is provided with a gripping device embedded in the material of the friction way. The opposite end of the stud is made of an insert which slides in axial direction in the material of the bearing hub of the disk. The friction ways and bearing hub of the disk are cast with the use of the common casting rod with studs.

EFFECT: improved performance.

7 cl, 7 dwg

Brake disc // 2241875
The invention relates to the field of transport engineering and can be used in disc brakes of aircraft wheels

The invention relates to the production of composite materials obtained by impregnating a carbon/carbon materials used in areas where there are high temperatures, for example for the manufacture of brakes for aircraft

Brake disc // 2237203
The invention relates to the field of engineering, in particular to the brake disks made of composite material based on carbon

FIELD: transport mechanical engineering.

SUBSTANCE: ventilated disk comprises friction ways connected with the bearing hub of the disk through connecting members made of studs distributed over the periphery of the bearing hub of the disk. One end of the stud is provided with a gripping device embedded in the material of the friction way. The opposite end of the stud is made of an insert which slides in axial direction in the material of the bearing hub of the disk. The friction ways and bearing hub of the disk are cast with the use of the common casting rod with studs.

EFFECT: improved performance.

7 cl, 7 dwg

FIELD: mechanical engineering.

SUBSTANCE: disc has assembly bulge for fastening to nave of transportation vehicle wheel and back band connected with bulge and having opposite surfaces of braking to provide interaction with brackets of brake's support to have an breaking effect onto transportation vehicle. At least one braking surface has at least one pair of channels, which have to be reflectively symmetrical to radius of disc. Channels pass in such a manner to embrace the whole thickness of back band, which intends for interaction with brackets. Continuity of each channel is provided along its total length. All four channels of at least one pair of channels pass the route which has at least one straight part and one curved part. Each channel of any pair of channels has at least a part of its route, which is located close to inner edge of back band and is oriented at radial direction mainly. Moreover mentioned channels of at least one pair of channels do not cross each other. All four channels pass the route without being damaged. Any channel passes the route from head or inner end to tail or inner end. The end mentioned is closed with dead edge where side walls of channel connect to each other.

EFFECT: improved efficiency of operation; improved reliability of operation of baking system.

27 cl, 7 dwg

FIELD: mechanical engineering.

SUBSTANCE: surface of the rotor is subjected to electric-spark grinding or electro-erosion treatment. The part of the rotor of the braking mechanism to be treated by electro-erosion is made of a conducting material, preferably of ferrous metal, iron, and gray cast iron. The braking disk of the rotor is solid or ventilated.

EFFECT: enhanced reliability.

60 cl, 4 dwg

Disk brake // 2269695

FIELD: mechanical engineering.

SUBSTANCE: disk brake comprises support that is rigidly connected to the brake and embraces one or more brake disks, at least one stop plate, and set of braking linings. The brake disks are mounted on the rotating hub without permitting rotation with respect to the hub and for permitting movement in the axial direction with respect to the hub by means of springs for transmitting brake moment from the brake disk to the hub. The braking linings are mounted for permitting movement in the axial direction inside the support that undergoes loading on the brake linings. The support has an opening through which the brake lining can be inserted or removed.

EFFECT: enhanced reliability.

13 cl, 15 dwg

Brake disk // 2277192

FIELD: mechanical engineering; vehicle multiple-disk brakes.

SUBSTANCE: proposed brake disk contains friction member made of carbon composition with rectangular slots uniformly spaced over circumference in each of which two metal U-shaped load-bearing clamp-like inserts are fitted. Each such clamp engages by walls with side surface of slot and end face surfaces of friction member, being secured on disk by rivets. At least two vertical cuts pointed to each other and displaced relative to each other are made in each clamp on walls in contact with end face surfaces of friction member. Cuts are made to provide elastic deformation of clamp and its mounting on friction member with preload to guarantee locking of clamp to prevent its turning relative to axis of rivet.

EFFECT: improved reliability and increased service life of disk owing to prevention of destruction of friction member made of monocarbon under action of thermal, power and vibration loads.

3 dwg

FIELD: transport.

SUBSTANCE: clasp brake incorporates a caliper with one or more brake-shoe linings surrounding one or more brake disks. One of the brake disks slides on over the central part representing a hub, sleeve or the like part. The said central part is fitted on the wheel axle or the like part. The disks are coupled with the central part with the help of teeth, splines or the like parts so the disks cannot rotate but are fitted to slide on along the axle. The contact parts of the teeth or the like parts of at least one disk and/or of the central part feature an arc-like shape if seen along the wheel axle. The contact parts represent the parts of the teeth surfaces to be engaged with each other with the brake released. The said contact parts of every tooth and/or spline of the said central part feature the arc-like shape with the total arc length exceeding 360°/Z, and preferably larger than 2(360°/Z), where Z is the number of teeth of the disk and central part respectively.

EFFECT: reduced noise and vibration with brake released, higher wear resistance in interface between brake disks and central part.

15 cl, 13 dwg

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, particularly, to clasp brakes. The propose clasp brake incorporates a caliper enveloping one or more brake plates, a hub or a part linked up wit the hub. Spreader bars are arranged between the brake disk and hub or the part linked up wit the hub. The spreader bars are arranged to prevent contact between brake plate spline end faces and the hub spline end faces, or the part jointed to the hub, at whatever radial shift of the brake plate relative to the hub or the part jointed thereto. At least, one part of the spreader bar features such sizes and rigidity relative to the brake plate, hub or part splines that, at whatever radial shifts of the brake plate to the hub or part jointed thereto, all radial forces are transmitted from the brake plate to the hub or the part jointed to it only via, at least, one part of the spreader bar. The sizes are selected so as to provide a contact between the brake plate spline end faces those of the hub or the part jointed thereto in rotary engagement between the brake plate and hub or the part jointed thereto to transmit rotary motion in braking.

EFFECT: damping radial impacts or radial shifts between brake plate and hub, particularly, between end faces of appropriate splines.

13 cl, 9 dwg

Brake disk // 2362922

FIELD: automotive industry.

SUBSTANCE: invention relates to automotive industry, namely, to disk brakes. Proposed brake disk is made in cast iron and represents a sliding disk of the disk-type brake. Proposed disk comprises outer edges, inner edges and alternating teeth and gaps along the said inner edges. Note here that it incorporates means designed to reduce fracture formation caused by irregular characteristics of the brake disk elongation. The disk features zones with reduced material thickness in every tooth, as compared with that along the radius outside the gaps between teeth, and has no similar thickness reduction on gaps between teeth. Aforesaid material thickness reduction zones formed in disk casting are located in transition between teeth and main part of brake disk, and pass partially along imaginary circumference with radius of the gap lower parts. Aforesaid zones represent either zones not forming through holes, or zones representing axial openings or holes. Arc-like transition parts with adjacent teeth and or rectilinear or almost rectilinear part between the said transition parts form lower part of every gap. Each transition part features radius R, while rectilinear part length is smaller than 1.5R.

EFFECT: reduced risks of fracture formation, higher strength.

10 cl, 3 dwg

Brake disk // 2370682

FIELD: machine building.

SUBSTANCE: brake disk comprises flange or splines for it to be attached to wheel hub, working surfaces to interact with brake liners and vent channels. The latter are arranged between the working surfaces. Transition radius of surfaces that make vent channels exceeds four millimetres.

EFFECT: higher efficiency of braking, reduced coefficient of friction.

1 dwg

Brake vented disk // 2370683

FIELD: machine building.

SUBSTANCE: brake disk comprises flange or splines for it to be attached to wheel hub, working surfaces to interact with brake liners and vent channels. The latter are arranged between working surfaces. Vent channel width A and disk thickness B are selected to satisfy the relationship A/B>0.38.

EFFECT: higher efficiency of cooling, reduced wear, longer life; stable braking.

1 dwg

Up!