Motorcycle brake disc

Abstract

The utility model discloses a motorcycle brake disc which comprises a brake disc body, a positioning hole is formed in the middle of the brake disc body, mounting holes are evenly distributed in the peripheral side of the positioning hole, a plurality of sets of through holes are formed in the brake disc body at intervals, the through holes penetrate through the brake disc body, and openings are formed in the two ends of each through hole. The connecting line of the center points of the openings and the vertical line of any end face of the brake disc body form an acute angle. According to the brake disc, the acute angle is formed between the connecting line of the center points of the openings in the two ends of the through hole penetrating through the brake disc body and the vertical line of any end face of the brake disc body, so that pollutants attached to the brake disc can rapidly fall off, and the self-cleaning capacity and the heat dissipation capacity of the whole brake disc are improved.

Description

Technical Field

[0001] The utility model relates to the field of motorcycle braking devices, and particularly to a motorcycle brake disc. Background Art

[0002] Simply put, a brake disc is a circular disc that rotates when the vehicle is moving. The brake caliper clamps the brake disc to generate braking force. When stepping on the brake, it clamps the brake disc to slow down or stop the vehicle. The brake disc has good braking effect and is easier to maintain than drum brakes.

[0003] For traditional brake disc heat dissipation, generally, several groups of through holes are provided on the outer periphery of the brake disc along a vertical line parallel to any end face of the brake disc. While reducing the overall mass of the brake disc through the through holes, the friction and heat dissipation capacity of the brake disc are improved. Chinese Patent with Publication No. CN113931953A discloses a disc brake, where the brake disc includes a brake disc body and a mating disc. A mating disc opening is provided in the central area of the brake disc body. Through holes and heat dissipation grooves are provided on the brake disc. The heat dissipation grooves and through holes are arranged at intervals, and both the heat dissipation grooves and ventilation holes are arranged around the mating disc opening. Through the above structure, heat dissipation of the brake disc is carried out, improving the heat dissipation capacity of the brake disc and reducing the heat transferred to components such as hub bearings by the brake disc.

[0004] However, the above brake disc has the following technical defects:

[0005] First, during the use of the brake disc, a large amount of pollutants such as sand, dirt, and water vapor will accumulate in the through holes and heat dissipation grooves, making it difficult for the brake disc to dissipate heat, significantly increasing the probability of deformation of the brake disc. At the same time, the pollutants reduce the performance of the brake disc, extending the sliding distance during braking and increasing the safety risk during braking.

[0006] Second, the through holes are arranged along a vertical line parallel to any end face of the brake disc. During the driving of the vehicle, the heat dissipation capacity on one side of the through hole is relatively low, and the overall heat dissipation of the brake disc is uneven, easily leading to deformation of the brake disc.

[0007] Third, when the brake disc is severely worn after long-term use, there is no clear mark for reference, increasing the safety risk during driving. Summary of the Utility Model

[0008] The technical problem to be solved by the utility model is to provide a motorcycle brake disc with simple structure, strong self-cleaning ability, and fast heat dissipation in view of the above deficiencies of the prior art.

[0009] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a motorcycle brake disc, including a brake disc body, a positioning hole is provided in the middle of the brake disc body, mounting holes are evenly distributed around the positioning hole, a plurality of groups of through holes are arranged at intervals on the brake disc body, the through holes penetrate the brake disc body and openings are provided at both ends of the through holes, and a line connecting the center points of the openings at both ends of the through holes is arranged at an acute angle to a vertical line of any end face of the brake disc body.

[0010] By adopting the above technical solution, compared with the prior art in which several groups of through holes are arranged along a vertical line parallel to any end face of the brake disc, the utility model arranges through holes at intervals on the brake disc body, reducing the overall total amount of the brake disc, and the center point connection line of the openings at both ends of the through hole is arranged at an acute angle relative to the vertical line of any end face of the brake disc body, so that the through hole runs through the brake disc body in an oblique direction, which not only increases the friction during braking and improves the braking efficiency, but also makes it difficult for pollutants to stay in the hole due to the inclined wall surface, and makes the air flow smoother, so that pollutants can quickly fall from the through hole, enhance the self-cleaning ability, and further reduce the braking noise. The wind can quickly take away the heat generated by the brake disc body during the braking process through the through holes arranged in an oblique direction, which has a better heat dissipation effect, improves the cooling performance, and delays the thermal attenuation of the brake disc.

[0011] Furthermore, the inner diameter of one end opening of the through hole is larger than that of the other end opening.

[0012] By adopting the above technical solution, the through hole is in the shape of an oblique cone. During use, the brake disc takes in air from the opening with a larger inner diameter of the through hole and exhausts air from the opening with a smaller inner diameter. This not only speeds up the flow rate of the wind in the through hole, making it more difficult for pollutants to adhere to the inner wall, but also improves the heat dissipation capacity of the brake disc.

[0013] Furthermore, a plurality of cleaning grooves are spaced apart on the brake disc body.

[0014] By adopting the above technical solution, the cleaning groove is arranged on the brake disc body, which improves the self-cleaning ability of the brake disc body and increases the heat dissipation of the brake disc body, thereby achieving a better heat dissipation effect of the brake disc.

[0015] Furthermore, the cleaning grooves are arranged on both end surfaces of the brake disc body, and the cleaning grooves located on the both end surfaces of the brake disc body are symmetrical.

[0016] By adopting the above technical solution, the cleaning grooves are symmetrically located at the two end surfaces of the brake disc body, so that the overall weight distribution of the brake disc body is more uniform, while improving the self-cleaning ability of the brake disc body.

[0017] Furthermore, the cleaning groove is a groove extending in a straight line direction.

[0018] With the above technical solution, a straight cleaning groove is provided on the brake disc body, and the pollutants in the groove can directly fall out of the brake disc from the groove. Moreover, there will be some wear during the braking process of the brake disc. When the brake disc wears to a certain extent, it is possible to observe whether the brake disc needs to be replaced by comparing the thickness of the brake disc body and the bottom of the cleaning groove. Compared with the traditional method of judging the thickness of the brake disc by the naked eye, the rapidity of identifying whether the brake disc needs to be replaced is greatly improved.

[0019] Furthermore, a number of weight-reducing grooves are provided on the brake disc body, which penetrate through the brake disc body. The weight-reducing grooves are spaced apart on the brake disc body.

[0020] With the above technical solution, by providing the weight-reducing grooves, the weight of the brake disc body is reduced, making the brake disc body more lightweight.

[0021] Furthermore, two of the number of weight-reducing grooves are symmetric with each other.

[0022] With the above technical solution, the weight-reducing grooves are symmetric with each other pairwise, making the overall brake disc symmetrically arranged, and the weight distribution of the entire brake disc is more uniform.

[0023] Furthermore, reinforcing ribs are provided between the weight-reducing grooves. The reinforcing ribs are spaced apart on the brake disc body.

[0024] With the above technical solution, the structural strength of the brake disc body is further improved, thus avoiding the phenomenon that the brake disc body is easily bent and damaged.

[0025] The beneficial effects of a motorcycle brake disc described in this application are as follows:

[0026] First, a number of groups of through holes are provided at intervals on the brake disc body. The through holes penetrate through the brake disc body and openings are provided at both ends of the through holes. The connecting line of the center points of the openings is set at an acute angle with the perpendicular line of any end face of the brake disc body, so that the through holes are arranged obliquely. The inclined wall surface of the through holes makes it difficult for pollutants to stay in the holes. The wind is guided to the surface of the brake disc through the through holes, which can better blow off pollutants such as sand grains, dirt, and water vapor attached to the surface of the brake disc. At the same time, the brake disc is evenly cooled, avoiding deformation of the brake disc due to uneven heating, and improving the overall durability and integrity of the brake disc.

[0027] Second, cleaning grooves are provided at intervals on the brake disc body. The cleaning grooves are provided on both end faces of the brake disc body. The cleaning grooves on the two end faces of the brake disc body are symmetric. The wind passing through the surface of the brake disc body enters the cleaning grooves, and the pollutants accumulated in the cleaning grooves are blown off the brake disc body. At the same time, the brake disc body is cooled, further improving the overall self-cleaning ability and heat dissipation ability of the brake disc.

[0028] Thirdly, weight-reducing grooves are arranged at intervals on the brake disc body, reducing the weight of the brake disc body, making the brake disc more lightweight. Moreover, a rib structure is adopted between the weight-reducing grooves to improve the structural strength of the brake disc body, ensuring the flexibility and impact resistance of the brake disc, thereby avoiding the phenomenon that the brake disc body is easily bent and damaged.

[0029] The following further describes the present utility model in detail with reference to the drawings and embodiments. Description of the Drawings

[0030] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0031] Figure 2 For the present utility model Figure 1 is an enlarged schematic diagram of part A in;

[0032] Figure 3 For the present utility model Figure 1 is an enlarged schematic diagram of part B in;

[0033] Figure 4 is a schematic diagram of the overall structure of different perspectives in an embodiment of the present utility model

[0034] Label annotation: Brake disc body 1, through hole 2, cleaning groove 3, rib 4, positioning hole 5, mounting hole 6, weight-reducing groove 7. Specific Embodiments

[0035] The technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0036] As shown in the specification appendix Figures 1 to 4 A motorcycle brake disc as shown, comprising a brake disc body 1. The brake disc body 1 is provided with a plurality of groups of through holes 2. The through holes 2 penetrate through the brake disc body 1 and openings are provided at both ends of the through holes 2. The connecting line of the central points of the openings at both ends of the through holes 2 is arranged at an acute angle with respect to the perpendicular line of any end face of the brake disc body 1. The through holes 2 penetrate through the brake disc body 1 obliquely. While increasing the friction of the brake disc body 1, the air flows more smoothly in the through holes 2, effectively dropping the pollutants attached to the inner wall of the through holes 2 out of the brake disc body 1, and can quickly take away the heat of the brake disc body 1, with better heat dissipation effect, improving the cooling performance and delaying the thermal decay of the brake disc.

[0037] One end of the through hole 2 has a larger inner diameter than the other end. Wind enters the through hole 2 from the opening with the larger inner diameter of the through hole 2 and blows out from the opening with the smaller inner diameter at the other end. This not only speeds up the air flow rate inside the through hole 2, making it more difficult for pollutants to adhere to the inner wall of the through hole 2, but also improves the heat dissipation capacity of the brake disc.

[0038] A number of cleaning grooves 3 are distributed at intervals on the brake disc body 1. The cleaning grooves 3 are provided on both end faces of the brake disc body 1, and the cleaning grooves 3 on the two end faces of the brake disc body 1 are symmetrical. The cleaning grooves 3 are grooves extending in a straight line direction, making the weight distribution of the brake disc body 1 more uniform and improving the self-cleaning ability of the brake disc body 1 at the same time. Wind enters the cleaning grooves 3 from the surface of the brake disc body 1. While the pollutants in the cleaning grooves 3 fall out of the brake disc body 1, heat dissipation of the brake disc body 1 is carried out, improving the self-cleaning ability and heat dissipation ability of the brake disc body 1. And during the braking process of the brake disc, there will be some wear. When the brake disc wears to a certain extent, by comparing the thickness of the brake disc body 1 and the bottom of the cleaning groove 3, it can be observed whether the brake disc needs to be replaced. Compared with the traditional method of judging the thickness of the brake disc by the naked eye, the rapidity of identifying whether the brake disc needs to be replaced is greatly improved.

[0039] In addition, a positioning hole 5 is provided in the middle of the brake disc body 1. A number of weight-reducing grooves 7 are provided through the brake disc body 1. Two of the number of weight-reducing grooves 7 are symmetrical to each other. Installation holes 6 are distributed on the periphery of the positioning hole 5. Reinforcing ribs 4 are provided between the weight-reducing grooves 7. The weight-reducing grooves 7, the installation holes 6 and the reinforcing ribs 4 are all distributed at intervals on the brake disc body 1.

[0040] The brake disc body 1 is fixedly installed at a specified position through the positioning hole 5 and the installation holes 6. At the same time, through the weight-reducing grooves 7, the weight of the brake disc body 1 is reduced, and the brake disc body 1 is made more lightweight. And a reinforcing rib 4 structure is adopted between the weight-reducing grooves 7 to further improve the structural strength of the brake disc body 1, ensuring the flexibility and impact resistance of the brake disc body 1, thereby avoiding the situation that the brake disc body 1 is easily bent and damaged.

[0041] The above-described embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A motorcycle brake disc, comprising a brake disc body, a positioning hole is provided in the middle of the brake disc body, a plurality of mounting holes are evenly distributed around the positioning hole, a plurality of groups of through holes are arranged at intervals on the brake disc body, the through holes penetrate the brake disc body and openings are provided at both ends of the through holes, characterized in that: A line connecting the center points of the openings at both ends of the through hole and a vertical line of any end surface of the brake disc body are arranged at an acute angle.

2. A motorcycle brake disc according to claim 1, characterized in that: The inner diameter of one end opening of the through hole is larger than that of the other end opening.

3. A motorcycle brake disc according to claim 1, characterized in that: A plurality of cleaning grooves are arranged at intervals on the brake disc body.

4. A motorcycle brake disc according to claim 3, characterized in that: The cleaning grooves are arranged on both end surfaces of the brake disc body, and the cleaning grooves located on the both end surfaces of the brake disc body are symmetrical.

5. A motorcycle brake disc according to claim 4, characterized in that: The cleaning groove is a groove extending in a straight line direction.

6. A motorcycle brake disc according to any one of claims 1 to 5, characterized in that: The brake disc body is provided with a plurality of weight-reducing grooves penetrating the brake disc body, and the weight-reducing grooves are distributed at intervals on the brake disc body.

7. A motorcycle brake disc according to claim 6, characterized in that: Two of the plurality of weight-reducing grooves are symmetrical to each other.

8. A motorcycle brake disc according to claim 7, characterized in that: Reinforcing ribs are arranged between the weight-reducing grooves, and the reinforcing ribs are evenly distributed on the brake disc body.

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