CN216589701U

CN216589701U - Brake disc of disc brake

Info

Publication number: CN216589701U
Application number: CN202123023564.1U
Authority: CN
Inventors: 李瑞栋; 张永杰; 郭海广
Original assignee: Hebei Aiste Vehicle And Bridge Co ltd
Current assignee: Hebei Aiste Vehicle And Bridge Co ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-05-24
Anticipated expiration: 2031-12-02

Abstract

The utility model provides a brake disc of a disc brake, wherein an inner ring of the brake disc is provided with an inner ring connecting part used for being connected with a transmission ring; the inner ring connecting part is provided with a plurality of butt joint grooves which are axially communicated, each butt joint groove comprises a plurality of guide grooves and a plurality of force transmission grooves, and the cross sections of the guide grooves and the force transmission grooves are rectangular or trapezoidal; the working surface of the guide groove is the end surface of the groove bottom which is separated from the circumferential surface of the inner ring, and the working surface of the force transmission groove is at least one groove wall side surface which is intersected with the circumferential surface of the inner ring. This brake disc will be connected with the conveying ring butt joint groove and carried out the function and distinguish to quadrilateral structural design has been used, makes the direction and the moment of torsion transmission of brake disc can go on at the different working surfaces in the different butt joint groove, and passes power the contact with conveying ring and brake disc and change into face contact by line contact, has increased power transmission post and brake disc area of contact, greatly reduced conveying ring and/or brake disc deformation probability. The brake disc with the structure can not generate sliding clamping phenomenon even if the brake disc and/or the transmission ring have large deformation.

Description

Brake disc of disc brake

Technical Field

The utility model relates to the field of vehicle brakes, in particular to a brake disc of a disc brake.

Background

The rotating element in a friction pair of a disc brake in a vehicle brake is a metal disc working on its end face, called a brake disc. The friction elements grip the brake disc from both sides to produce braking. The fixing elements have various structural forms, and can generally divide the disc brake into a caliper disc type and a full disc type. In heavy goods vehicles, greater braking forces are required, for which purpose full-disc brakes are used. The fixed and rotating elements of an all-disc brake friction pair are disc-shaped, referred to as fixed and rotating discs, respectively. All the working surfaces of the brake disc can be simultaneously contacted with the friction plates, and the structure principle of the brake disc is similar to that of a friction clutch.

The brake disc of an all-disc brake is typically axially movable on a carrier ring, one end of which is fixedly connected to the hub, so that the braking torque of the brake disc can be transmitted to the hub through the carrier ring to perform the braking action. The structure that conveying ring and brake disc power transmission mechanism among the prior art, its moment of torsion transmission is the same with the structure of slip direction, is generally the columniform conveying post, uses for a long time or under the high temperature because the deformation of brake disc and/or conveying ring arouses that the slip card dies, relieves that the back wheel hub of braking can not normally rotate, seriously influences the experience of driving, causes the dangerous condition even.

SUMMERY OF THE UTILITY MODEL

In view of the above, embodiments of the present invention provide a brake disc of a disc brake to obviate or mitigate one or more of the disadvantages of the prior art.

The technical scheme of the utility model is as follows:

the inner ring of the brake disc has an inner ring connection for connection with a transfer ring; the inner ring connecting part is provided with a plurality of butt joint grooves which are axially communicated, each butt joint groove comprises a plurality of guide grooves and a plurality of force transmission grooves, and the cross sections of the guide grooves and the force transmission grooves are rectangular or trapezoidal; the guide grooves are uniformly or non-uniformly distributed, and the force transmission grooves are uniformly or non-uniformly distributed; the working surface of the guide groove is the end surface of the groove bottom, which is separated from the circumferential surface of the inner ring, and the working surface of the force transmission groove is at least one groove wall side surface, which is intersected with the circumferential surface of the inner ring.

In some embodiments, the cross-sectional shape of the guide groove is rectangular and the cross-sectional shape of the force transfer groove is isosceles trapezoid.

In some embodiments, each of the guide grooves of the brake disk and the notch of each of the force transmission grooves are located on the same circumferential surface, and the groove depth of the guide groove is smaller than that of the force transmission groove.

In some embodiments, the guide grooves are provided with three uniformly distributed; and/or the force transmission grooves are provided with seven non-uniformly distributed grooves.

In some embodiments, the inner ring connecting portion of the brake disc has weight-reducing heat dissipation holes running through in the axial direction, and the weight-reducing heat dissipation holes are located on the end face of the inner ring connecting portion and between two adjacent abutting grooves.

In some embodiments, the included angle between the two groove wall side surfaces of the force transmission groove of the brake disc is 20-45 degrees.

In some embodiments, the angle between the two groove wall sides of the force transmission groove of the brake disc is 29 °.

In some embodiments, the inner ring connection is recessed inwardly from both sides of the brake disc.

In some embodiments, the groove bottom end surface of the butt joint groove of the brake disc and the side surface of the groove wall are in rounded or chamfered transition.

In some embodiments, the inner ring connecting portion of the brake disc has radial ventilation and heat dissipation holes, and the ventilation and heat dissipation holes are arranged on the inner ring peripheral surface and between two adjacent butt joint grooves; the butt joint groove is arranged on a support column supporting the disc surfaces of the two brake discs.

According to the brake disc of the disc brake of the embodiment of the utility model, the obtained beneficial effects at least comprise that:

the butt joint grooves connected with the transmission ring are functionally distinguished by the brake disc, so that the guide and torque transmission of the brake disc are respectively positioned on different butt joint grooves, the butt joint grooves do not adopt circular arc structural design, the quadrilateral structural design is creatively used, the guide and torque transmission of the brake disc can be carried out on different working surfaces of different butt joint grooves, the force transmission contact of the transmission ring and the brake disc is changed from line contact to surface contact, the contact area of the force transmission column and the brake disc is increased, and the deformation probability of the transmission ring and/or the brake disc is greatly reduced. Even if the brake disc of this structure still can not appear sliding clamping stagnation phenomenon when brake disc and/or conveying ring have great deformation, the vehicle is in long-time braking back, and the brake disc still can freely slide on the driving ring, has improved driver's driving experience greatly, has also improved the security of stopper.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

It will be appreciated by those skilled in the art that the objects and advantages that can be achieved with the present invention are not limited to the specific details set forth above, and that these and other objects that can be achieved with the present invention will be more clearly understood from the detailed description that follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the principles of the utility model. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the utility model. For purposes of illustrating and describing some portions of the present invention, corresponding parts of the drawings may be exaggerated, i.e., may be larger, relative to other components in an exemplary apparatus actually manufactured according to the present invention. In the drawings:

fig. 1 is a schematic perspective view of a brake disc of a disc brake according to an embodiment of the present invention.

Fig. 2 is a front view of a brake disc in an embodiment of the utility model.

Fig. 3 is a top view of a brake disk in an embodiment of the utility model.

Fig. 4 is a cross-sectional view of a brake disk in an embodiment of the utility model.

Fig. 5 is a partially cut away perspective view of a brake disc according to an embodiment of the utility model.

Reference numerals:

100. a brake disc; 110. an inner ring connecting portion; 111. the peripheral surface of the inner ring; 112. reducing the weight of the heat dissipation holes; 113. ventilating and radiating holes; 114. a support pillar; 120. a guide groove; 121. the end surface of the bottom of the guide groove; 122. the side surface of the groove wall of the guide groove; 130. a force transfer groove; 131. the end surface of the bottom of the force transmission groove; 132. the side surface of the wall of the force transmission groove; 141. the butt joint groove is rounded;

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.

It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the scheme according to the present invention are shown in the drawings, and other details not so relevant to the present invention are omitted.

It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, elements, steps or components, but does not preclude the presence or addition of one or more other features, elements, steps or components.

It is also noted herein that the term "coupled," if not specifically stated, may refer herein to not only a direct connection, but also an indirect connection in which an intermediate is present.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same or similar parts, or the same or similar steps.

The utility model provides a brake disc of a disc brake, which is matched with a transmission ring with a corresponding structure for use, can greatly relieve or solve the stress deformation of the brake disc and/or the transmission ring of a full disc brake in the prior art, and solves the problem of sliding clamping stagnation caused by the deformation of the brake disc and/or the transmission ring.

As shown in fig. 1 and 2, in some embodiments, the inner ring of the brake disc 100 has an inner ring connection 110 for connecting with a transmission ring; the inner ring connecting portion 110 has a plurality of axially penetrating abutment grooves including a plurality of guide grooves 120 and a plurality of force transmission grooves 130, and the cross-sectional shapes of the guide grooves 120 and the force transmission grooves 130 are rectangular or trapezoidal.

Wherein, the plurality of guide grooves 120 are uniformly or non-uniformly distributed, and the plurality of force transmission grooves 130 are uniformly or non-uniformly distributed; the working surface of the guide groove 120 is the groove bottom end surface which is away from the inner ring peripheral surface 111, and the working surface of the force transmission groove 130 is at least one groove wall side surface which is intersected with the inner ring peripheral surface 111.

In the embodiment, the butt joint grooves connected with the transmission ring are functionally distinguished by the brake disc, so that the guide and the torque transmission of the brake disc are respectively positioned on different butt joint grooves, the butt joint grooves do not adopt circular arc structural design, the quadrilateral structural design is creatively used, the guide and the torque transmission of the brake disc can be carried out on different working surfaces of different butt joint grooves, the force transmission contact between the transmission ring and the brake disc is changed from line contact to surface contact, the contact area between the force transmission column and the brake disc is increased, and the deformation probability of the transmission ring and/or the brake disc is greatly reduced. Even if the brake disc of this structure still can not appear sliding clamping stagnation phenomenon when brake disc and/or conveying ring have great deformation, the vehicle is in long-time braking back, and the brake disc still can freely slide on the driving ring, has improved driver's driving experience greatly, has also improved the security of stopper.

In some embodiments, as shown in fig. 2, the cross-sectional shape of the guide groove 120 is substantially rectangular, and the top surface thereof is a circular arc surface, but is not limited thereto, and may also be trapezoidal, for example. The main function of the guide grooves 120 is to meet the axial sliding requirements of the brake disc, so that the guide grooves 120 mainly take up the radial forces of the transmission ring, and their working surfaces are the groove bottom end surfaces that are away from the inner ring peripheral surface 111. The groove bottom end surface 121 of the guide groove is preferably a circular arc surface, but is not limited thereto, and may be a flat surface, for example. The groove wall side surface 122 of the guide groove is preferably a circular arc surface, but is not limited thereto, and may be a flat surface, for example.

Further, the cross-sectional shape of the force transmission groove 130 is an isosceles trapezoid, but is not limited thereto, and may also be a rectangle, for example. The main function of the force transfer groove 130 is to meet the torque transfer requirements of the brake disc, so that the force transfer groove 130 mainly takes the torque of the transfer ring and its working surface is at least one groove wall side where it intersects the inner ring periphery 111. The groove wall side 132 of the force transfer groove is preferably planar, but is not limited thereto and may be, for example, a curved surface with a small arc. The groove bottom end face 131 of the force transmission groove is preferably a circular arc face, but is not limited thereto and may be, for example, a flat face.

In the above embodiments, the cross section means a cross section perpendicular to the axial direction.

Because the hub has two moving modes of advancing and retreating, the working surface of the force transmission groove 130 is two groove wall side surfaces thereof, preferably, the cross section is in the shape of an isosceles trapezoid, and the inclined surface of the isosceles trapezoid enables a better force transmission path for torque, thereby optimizing the force transmission structure.

Preferably, an included angle between two groove wall side surfaces of the force transmission groove 130 of the brake disc 100 is 20 to 45 °, and further preferably, an included angle between two groove wall side surfaces of the force transmission groove 130 of the brake disc 100 is 29 °.

In some embodiments, as shown in fig. 2 and 4, the notches of the guide grooves 120 and the force transmission grooves 130 of the brake disc 100 are located on the same circumferential surface, and the depth of the guide grooves 120 is smaller than that of the force transmission grooves 130, so that the guide grooves 120 are in contact with the transfer ring (the groove bottom end surface is in contact), while the groove bottom end surface 131 of the force transmission grooves is not in contact with the transfer ring.

In addition, as shown in fig. 4, the butting grooves are opened on the supporting columns 114 supporting the disc surfaces of the two brake discs 100. Under the condition that the support columns 114 of the brake disc 100 are the same in size, the support column 114 where the guide groove 120 is located is thicker than the support column 114 where the force transmission groove 130 is located so as to bear the radial force of the brake disc 100; in case the number of guide grooves 120 is less than the number of force transfer grooves 130, it is still ensured that the support column 114 in which the guide grooves 120 are located provides sufficient support strength.

In some embodiments, as shown in fig. 1 and 2, the guide grooves 120 may be provided with three uniformly distributed; the guiding grooves 120 are preferably uniformly distributed, and preferably three or more guiding grooves are provided, which form a guiding structure of the brake disc 100 according to the principle of three-point positioning. In addition, the force transmission grooves 130 are provided with seven non-uniformly distributed grooves, but the number and the arrangement mode of the seven non-uniformly distributed grooves can be determined according to actual requirements.

In some embodiments, the groove bottom end surface of the butt groove of the brake disc 100 is in a rounded or chamfered transition with the groove wall side surface, preferably the butt groove rounded corner 141, so as to avoid stress concentration.

In some embodiments, the inner ring connecting portion 110 of the brake disc 100 has weight-reducing heat dissipation holes 112 penetrating in the axial direction, and the weight-reducing heat dissipation holes 112 are located on the end surface of the inner ring connecting portion 110 and between two adjacent abutting slots. For example, if the space between two adjacent docking slots is large, two or more weight-reducing louvers 112 may be provided; if the space between two adjacent butt-joint slots is small, the weight-reducing heat dissipation holes 112 may not be arranged. Preferably, each of the weight-reducing heat dissipation holes 112 may have a circular structure, and the diameters of the weight-reducing heat dissipation holes 112 may be uniform or different.

Further, the inner ring connecting portion 110 of the brake disc 100 has radial ventilation and heat radiation holes 113, and the ventilation and heat radiation holes 113 are formed on the inner ring peripheral surface 111 and located between two adjacent abutting grooves. Preferably, each ventilation and heat radiation hole 113 may have a rectangular structure, and the size of the ventilation and heat radiation hole is matched with the size of the circumferential surface of the part.

In some embodiments, as shown in fig. 1 and 5, the inner ring connecting portion 110 is recessed inward from both sides of the brake disc 100, and since the inner ring connecting portion 110 does not contact the friction plates, the inner ring connecting portion 110 may have a weight reduction design while maintaining sufficient mechanical strength.

In some embodiments, the transmission ring of the disc brake used in cooperation with the brake disc may have a complementary corresponding structure to the guide groove and the force transmission groove, which are not described herein.

the butt joint grooves connected with the transmission ring are functionally distinguished by the brake disc, so that the guide and torque transmission of the brake disc are respectively positioned on different butt joint grooves, the butt joint grooves do not adopt circular arc structural design, the quadrilateral structural design is creatively used, the guide and torque transmission of the brake disc can be carried out on different working surfaces of different butt joint grooves, the force transmission contact of the transmission ring and the brake disc is changed from line contact to surface contact, the contact area of the force transmission column and the brake disc is increased, and the deformation probability of the transmission ring and/or the brake disc is greatly reduced. Even if the brake disc of this structure still can not appear sliding clamping stagnation phenomenon when brake disc and/or conveying ring have great deformation, the vehicle is in long-time braking back, and the brake disc still can freely slide on the driving ring, has improved driver's driving experience greatly, has also improved the security and the life of stopper.

Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments and/or in combination with or instead of the features of the other embodiments in the present invention.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the embodiment of the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Brake disc for a disc brake, characterized in that the inner ring of the brake disc has an inner ring connection for connection with a transmission ring; the inner ring connecting part is provided with a plurality of butt joint grooves which are axially penetrated, each butt joint groove comprises a plurality of guide grooves and a plurality of force transmission grooves, and the cross sections of the guide grooves and the force transmission grooves are rectangular or trapezoidal;

the guide grooves are uniformly or non-uniformly distributed, and the force transmission grooves are uniformly or non-uniformly distributed;

the working surface of the guide groove is the end surface of the groove bottom, which is separated from the circumferential surface of the inner ring, and the working surface of the force transmission groove is at least one groove wall side surface, which is intersected with the circumferential surface of the inner ring.

2. Brake disc for a disc brake according to claim 1, characterised in that the guide grooves have a rectangular cross-section and the force-transmission grooves have an isosceles trapezoidal cross-section.

3. The disc brake of claim 2, wherein the notches of the guide grooves and the force transmission grooves of the brake disc are located on the same circumferential surface, and the groove depth of the guide grooves is smaller than that of the force transmission grooves.

4. Brake disc for a disc brake according to claim 1, characterized in that the guide grooves are provided with three evenly distributed; and/or the presence of a gas in the gas,

seven force transmission grooves which are not uniformly distributed are arranged.

5. The disc brake of claim 1, wherein the inner ring connecting portion of the disc brake has weight-reducing heat dissipation holes extending therethrough in the axial direction, the weight-reducing heat dissipation holes being located on an end surface of the inner ring connecting portion and between two adjacent abutting grooves.

6. The brake disc of the disc brake according to claim 2, wherein the angle between the two groove wall sides of the force transmission groove of the brake disc is 20 to 45 °.

7. Brake disc for a disc brake according to claim 6, characterised in that the angle between the two groove wall sides of the force transmission groove of the brake disc is 29 °.

8. The disc brake of claim 1, wherein the inner ring connecting portion is recessed inwardly from both sides of the disc.

9. The brake disc of the disc brake according to claim 1 or 2, wherein the groove bottom end surface of the butt groove of the brake disc is in rounded or chamfered transition with the side surface of the groove wall.

10. The brake disc of the disc brake according to claim 1, wherein the inner ring connecting portion of the brake disc has ventilation and heat radiation holes in a radial direction, the ventilation and heat radiation holes being located on an inner circumferential surface between two adjacent abutting grooves;

the butt joint groove is arranged on a support column supporting the disc surfaces of the two brake discs.