A brake disc

Abstract

The present application discloses a brake disc, which relates to the field of vehicle brake technology, and comprises a coaxially arranged ring gear and a brake disc, wherein the ring gear is provided with a connecting portion, the connecting portion is fitted to one end of the brake disc in the axial direction, a first through hole is provided on the connecting portion, a second through hole is provided on the brake disc, the number and position of the second through holes are arranged one-to-one with the first through holes, a rivet is further provided on the connecting portion, the ring gear and the brake disc pass through the first through hole and the corresponding second through hole through the rivet to achieve riveting fixation. By riveting fixation with rivets, the ring gear and the brake disc are not easy to loosen, so that the accuracy of the vehicle speed acquisition of the ABS system is better, and then the braking force output of the ABS system is more accurate, and the overall use is more stable.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle braking, and more specifically, to a brake disc. Background Art

[0002] The brake disc is actually a round disc-mounted object. When the car is driving, the brake disc rotates along with the car's drive shaft. When the car brakes, the brake caliper clamps the two sides of the brake disc through the brake pads to generate braking force, thereby slowing down or stopping the car.

[0003] Some motorcycles need to be equipped with ABS systems. When producing brake discs for such motorcycles, in order to improve the safety factor of the motorcycle during driving, the brake discs will be made of a combination of a gear ring and a brake disc. The brake disc is mainly used to be clamped by the brake caliper to achieve braking, and the gear ring cooperates with the detection unit of the ABS system to obtain the current speed, thereby controlling the clamping force of the brake caliper.

[0004] However, in actual use, this type of brake disc is prone to loosening between the ring gear and the brake disc, which affects the accuracy of the vehicle speed acquisition by the ABS system. This is rather troublesome and needs to be improved. Summary of the invention

[0005] In order to improve the problem of looseness between the ring gear and the brake disc, the present application provides a brake disc.

[0006] The present application provides a brake disc, which adopts the following technical solution:

[0007] A brake disc comprises a coaxially arranged ring gear and a brake disc, wherein the ring gear is provided with a connecting portion, the connecting portion is in contact with one end of the brake disc along the axial direction, the connecting portion is provided with a first through hole, the brake disc is provided with a second through hole, the number and positions of the second through holes are arranged in a one-to-one correspondence with the first through holes, and rivets are also provided on the connecting portion, and the ring gear and the brake disc are riveted and fixed by passing the rivets through the first through hole and the corresponding second through hole.

[0008] Through the above technical solution, the connection is achieved by riveting the rivets through the gear ring and the brake disc, and the rivets are turned by the riveting machine so that the rivets press the gear ring and the brake disc tightly, making the overall connection more stable. In actual use, the gear ring and the brake disc are not easy to loosen, so that the ABS system can obtain the vehicle speed with better accuracy, and then the ABS system's brake force output is more accurate, making the overall use more stable.

[0009] Optionally, the brake disc is provided with grooves, the grooves are located on the end surface of the brake disc away from the connecting portion, the number and positions of the grooves are arranged in a one-to-one correspondence with the second through holes, and the grooves are used to accommodate the ends of the rivets.

[0010] Through the above technical solution, a groove is set. When the rivet is flanged by a rotary riveting machine, the deformed end of the rivet flange is located in the groove and is not higher than the end face of the brake disc, thereby reducing the exposure of the rivet end to be bumped. At the same time, when the brake disc is installed, the end of the rivet is located in the groove, which also reduces the influence of the convex end on the installation of the brake disc.

[0011] Optionally, an embedding groove is provided on the connecting portion, and the embedding groove is located on the end surface of the connecting portion facing away from the brake disc. The number and position of the embedding grooves are arranged in a one-to-one correspondence with the first through hole. The embedding groove is a circular groove and is flared, and the embedding groove is used for embedding and positioning the end of the rivet away from the groove.

[0012] Through the above technical solution, an embedding groove is provided, and the large end of the rivet can be positioned against the groove wall of the embedding groove, so that after the rivet is fixed, the radial positioning of the gear ring and the brake disc is more secure, further reducing looseness during use.

[0013] Optionally, a plurality of detection holes are provided on the axial end surface of the gear ring, and the plurality of detection holes are evenly distributed circumferentially along the axis of the gear ring.

[0014] Through the above technical solution, a detection hole is set. In actual use, the detection unit of the ABS system cooperates with the detection hole. Generally, the detection unit adopts a photoelectric sensor to calculate the rotation speed of the wheel by the number of blocking times, thereby reducing wheel locking caused by excessive braking force.

[0015] Optionally, the outer diameter of the gear ring is smaller than the inner diameter of the brake disc, a gap is left between the gear ring and the brake disc, a plurality of connecting parts are circumferentially spaced apart along the axis of the gear ring, and the connecting parts are lugs that protrude from the outer peripheral wall of the gear ring.

[0016] Through the above technical solution, the brake disc needs to be fixed on the wheel axle. When installing the present application, the axial end face of the brake disc away from the gear ring is attached to the installation position of the wheel axle. At this time, a gap is set to improve the connectivity between the gear ring and the brake disc, facilitate airflow, and improve the overall heat dissipation performance.

[0017] Optionally, a protrusion is further provided on the axial end face of the gear ring, the protrusion is located at the end of the gear ring that is in contact with the end face of the brake disc, and the protrusion is located between adjacent detection holes.

[0018] Through the above technical solution, when the brake disc rotates with the wheel axle, the protrusion rotates with it to move the air, thereby accelerating the flow rate at the end face of the gear ring close to the brake disc, and allowing the airflow there to be discharged from the gap between the gear ring and the brake disc. At this time, the outside air is replenished through the detection hole, making the overall heat dissipation performance better.

[0019] Optionally, the brake disc includes a connecting ring connected to the gear ring, a brake ring coaxially arranged on the outer ring of the connecting ring, and a connecting portion connected between the connecting ring and the brake ring, and the brake ring is axially offset from the connecting ring.

[0020] Through the above technical solution, the brake ring and the connecting ring are axially misaligned, and the connecting portion is bent. At this time, the bending setting of the connecting portion forms the effect of reinforcing ribs, so that the overall structural strength of the brake disc is better.

[0021] Optionally, a plurality of the connecting parts are provided, and the connecting parts are circumferentially spaced apart along the axis of the connecting ring, and shaped holes are formed between adjacent connecting parts.

[0022] Through the above technical solution, the shaped holes are arranged, so that the overall heat dissipation performance is better.

[0023] Optionally, a plurality of heat dissipation holes are provided on the brake disc.

[0024] Through the above technical solution, heat dissipation holes are provided, so that the overall heat dissipation effect is better.

[0025] Optionally, the distances between at least two of the heat dissipation holes and the axis of the brake disc are different.

[0026] Through the above technical solution, when the brake disc is in use, granular debris is easily adhered to the brake disc of the brake disc, and the distances from the heat dissipation holes to the axis of the brake disc are different. When the brake caliper clamps the brake disc, the brake disc gradually slows down. During this process, the brake caliper can push the debris on the axial end face of the brake disc to the position of the corresponding heat dissipation holes. The granular debris is separated from the brake disc when passing through the heat dissipation holes, thereby achieving the effect of cleaning the brake disc.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] (1) The rivet fixation makes the gear ring and brake disc less likely to loosen, which makes the ABS system's speed acquisition more accurate, and thus makes the ABS system's braking force output more precise, making the overall use more stable;

[0029] (2) By providing a gap, the connectivity between the gear ring and the brake disc is improved, which facilitates air flow and improves the overall heat dissipation performance;

[0030] (3) By providing the protrusions, the air flow rate is accelerated, thereby improving the overall heat dissipation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is an overall schematic diagram of an embodiment;

[0032] Figure 2An exploded schematic diagram of an embodiment;

[0033] Figure 3 A schematic diagram of the gear ring structure of an embodiment;

[0034] Figure 4 Schematic diagram of the brake disc structure of the embodiment.

[0035] Figure numerals: 1. gear ring; 11. connecting part; 12. first through hole; 13. embedding groove; 14. detection hole; 15. protrusion; 2. brake disc; 21. connecting ring; 211. second through hole; 212. groove; 213. countersunk hole; 22. brake ring; 221. heat dissipation group; 2211. heat dissipation hole; 23. connecting part; 231. shaped hole; 232. clearance groove; 3. rivet. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-4 This application is described in further detail.

[0037] Example:

[0038] A brake disc, such as Figure 1 , Figure 2 As shown, it includes a coaxially arranged ring gear 1, a brake disc 2 and a rivet 3, and the ring gear 1 and the brake disc 2 are both arranged in a circular ring shape.

[0039] like Figure 2 As shown, the outer diameter of the gear ring 1 is smaller than the inner diameter of the brake disc 2, and the outer wall of the gear ring 1 is provided with a plurality of connecting parts 11 spaced apart along the circumferential direction. In this embodiment, five connecting parts 11 are provided and are evenly distributed along the axis of the gear ring 1. The connecting parts 11 are lugs, and the connecting parts 11 protrude from the outer peripheral wall of the gear ring 1. Each connecting part 11 is provided with a first through hole 12 along the axial direction of the gear ring 1, and the first through hole 12 is a circular hole.

[0040] The connecting portion 11 is also provided with embedding grooves 13, the number and position of which are arranged one-to-one with the first through holes 12, the embedding grooves 13 are circular grooves, the embedding grooves 13 are arranged coaxially with the corresponding first through holes 12, the embedding grooves 13 are expanded, and the diameter of the smallest end of the embedding grooves 13 is greater than or equal to the diameter of the first through holes 12.

[0041] like Figure 2 , Figure 3As shown, a plurality of detection holes 14 are provided on the axial end face of the gear ring 1, each detection hole 14 extends in the radial direction of the gear ring 1, and the plurality of detection holes 14 are evenly distributed in the circumferential direction along the axis of the gear ring 1. A protrusion 15 is also fixed on the axial end face of the gear ring 1, and the protrusion 15 is arranged on the end face of the gear ring 1 away from the embedding groove 13. The number of protrusions 15 is the same as the number of detection holes 14, and the plurality of protrusions 15 are evenly distributed in the circumferential direction along the axis of the gear ring 1, and each protrusion 15 is located between adjacent detection holes 14. The length direction of each protrusion 15 is arranged along the radial direction of the gear ring 1, and each protrusion 15 is arranged to be reduced in the direction away from the gear ring 1.

[0042] like Figure 2 , Figure 4 As shown, the brake disc 2 includes a connecting ring 21, a brake ring 22 coaxially arranged on the outer ring of the connecting ring 21, and a connecting portion 23 connected between the connecting ring 21 and the brake ring 22. The brake ring 22 and the connecting ring 21 are axially offset, the connecting portion 23 is bent, and the end surface of the connecting portion 23 along the axial direction of the brake disc 2 is formed with a step surface.

[0043] like Figure 4 As shown, the connecting ring 21 of the brake disc 2 is provided with a second through hole 211, which is a circular hole and has a diameter equal to that of the first through hole 12, and the number and position of the second through holes 211 are arranged one-to-one with the first through holes 12. The connecting ring 21 is also provided with grooves 212, and the number and position of the grooves 212 are arranged one-to-one with the second through holes 211, and the grooves 212 are circular grooves and have a diameter larger than that of the second through holes 211.

[0044] The connecting ring 21 is also provided with a plurality of countersunk holes 213, which are located on the end surface of the connecting ring 21 away from the groove 212, and are evenly distributed circumferentially along the axis of the connecting ring 21. The number of the countersunk holes 213 is the same as that of the second through holes 211, and each countersunk hole 213 is located between adjacent second through holes 211.

[0045] like Figure 2 , Figure 4 As shown, a plurality of connecting parts 23 are provided, and the connecting parts 23 are arranged at intervals in the circumferential direction along the axis of the connecting ring 21. Each connecting part 23 is provided with a clearance groove 232 at both end faces along the axial direction of the brake disc 22. The clearance groove 232 is located at one end of the connecting part 23 close to the brake ring 22, and the axial end faces of the brake ring 22 and the connecting part 23 are not directly connected through the clearance groove 232. In actual use, when the debris particles on the axial end face of the brake ring 22 are moved by the brake caliper, the debris particles can be separated through the clearance groove 232, thereby reducing the situation where the debris particles are directly pushed onto the connecting part 23, and further reducing the debris from entering the area of ​​the gear ring 1 and interfering with the detection unit of the ABS system.

[0046] Shaped holes 231 are formed between adjacent connecting portions 23 . The number of the shaped holes 231 is the same as that of the second through holes 211 , and each shaped hole 231 is located correspondingly on the radially outer side of the second through hole 211 . The shaped holes can further enhance the heat dissipation and debris removal functions.

[0047] like Figure 4 As shown, a plurality of heat dissipation holes 2211 are provided in the axial direction of the brake ring 22, and at least two heat dissipation holes 2211 are at different distances from the axis of the brake disc 2. In this embodiment, the heat dissipation holes 2211 are divided into five heat dissipation groups 221, and the five heat dissipation groups 221 are evenly distributed circumferentially along the axis of the brake disc 2, and each heat dissipation group 221 is located on the outer side of the shaped hole 231 along the radial direction of the brake disc 2. Each heat dissipation group 221 includes five heat dissipation holes 2211, and the five heat dissipation holes 2211 of the group are distributed in an arc shape.

[0048] See also Figure 1 , Figure 2 When the gear ring 1 and the brake disc 2 are installed, each connecting portion 11 on the gear ring 1 fits one end of the connecting ring 21 of the brake disc 2 in the axial direction. At this time, the end face of the gear ring 1 away from the connecting ring 21 is flush with the axial end face of the corresponding end of the brake ring 22. The embedded groove 13 is located on the end face of the connecting portion 11 away from the brake disc 2, the groove 212 is located on the end face of the brake disc 2 away from the connecting portion 11, and the protrusion 15 is located at the end of the gear ring 1 that fits the end face of the brake disc 2. Then the first through hole 12 and the second through hole 211 are aligned one by one. At this time, a gap is left between the gear ring 1 and the brake disc 2 because the outer diameter of the gear ring 1 is smaller than the inner diameter of the brake disc 2. Then, the rivet 3 is passed through the first through hole 12 and the second through hole 211 from one end of the embedded groove 13, and then the rivet 3 is turned outward by a rotary riveting machine so that the other end of the rivet 3 forms a flange to achieve riveting fixation. After installation, one end of the rivet 3 is located in the embedding groove 13 and pressed against the inner wall of the embedding groove 13 , and the end of the rivet 3 after being flanged is located in the groove 212 .

[0049] When the gear ring 1 and the brake disc 2 of the brake disc are fixed, the countersunk hole 213 is located near the axial end surface of the gear ring 1. At this time, the brake disc is fixed to the corresponding position of the wheel axle by passing the bolt through the countersunk hole 213.

[0050] When the brake disc rotates with the wheel axle, the protrusion 15 on the ring gear 1 rotates with it to move the air, thereby accelerating the flow rate at the end face of the ring gear 1 close to the brake disc 2, and allowing the airflow there to be discharged from the gap between the ring gear 1 and the brake disc 2. At this time, the outside air is replenished through the detection hole 14, so that the overall heat dissipation performance is better.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A brake disc, comprising a coaxially arranged ring gear (1) and a brake disc (2), characterized in that: The gear ring (1) is provided with a connecting portion (11), the connecting portion (11) is in contact with one end of the brake disc (2) along the axial direction, the connecting portion (11) is provided with a first through hole (12), the brake disc (2) is provided with a second through hole (211), the number and position of the second through holes (211) are arranged in a one-to-one correspondence with the first through holes (12), the connecting portion (11) is also provided with a rivet (3), the gear ring (1) and the brake disc (2) are riveted and fixed by passing the rivet (3) through the first through hole (12) and the corresponding second through hole (211); The brake disc (2) is provided with a groove (212), the groove (212) is located on the end surface of the brake disc (2) away from the connecting portion (11), the number and position of the grooves (212) are arranged in a one-to-one correspondence with the second through holes (211), and the grooves (212) are used to accommodate the ends of the rivets (3); The gear ring (1) is provided with a plurality of detection holes (14) on the axial end surface, and the plurality of detection holes (14) are evenly distributed in the circumferential direction along the axis of the gear ring (1); the outer diameter of the gear ring (1) is smaller than the inner diameter of the brake disc (2), and a gap is left between the gear ring (1) and the brake disc (2); a plurality of connecting parts (11) are provided, and the plurality of connecting parts (11) are distributed in the circumferential direction at intervals along the axis of the gear ring (1); the connecting part (11) is a lug, and the connecting part (11) protrudes from the outer peripheral wall of the gear ring (1); a protrusion (15) is also provided on the axial end surface of the gear ring (1), and the protrusion (15) is located at one end of the gear ring (1) that is in contact with the end surface of the brake disc (2), and the protrusion (15) is located between adjacent detection holes (14); The brake disc (2) comprises a connecting ring (21) connected to the gear ring (1), a brake ring (22) coaxially arranged on the outer ring of the connecting ring (21), and a connecting portion (23) connected between the connecting ring (21) and the brake ring (22), wherein the brake ring (22) and the connecting ring (21) are axially offset; a plurality of connecting portions (23) are provided, and the connecting portions (23) are circumferentially spaced along the axis of the connecting ring (21), and shaped holes (231) are formed between adjacent connecting portions (23); The brake disc (2) is provided with a plurality of heat dissipation holes (2211); and at least two of the heat dissipation holes (2211) are at different distances from the axis of the brake disc (2).

2. A brake disc according to claim 1, characterized in that: The connecting portion (11) is provided with an embedding groove (13), the embedding groove (13) is located on the end surface of the connecting portion (11) away from the brake disc (2), the number and position of the embedding grooves (13) are arranged in a one-to-one correspondence with the first through hole (12), the embedding groove (13) is a circular groove and is arranged in a flared shape, and the embedding groove (13) is used for embedding and positioning the end of the rivet (3) away from the groove (212).

Images