Brake disc for vehicle disc brake

Abstract

The utility model relates to the technical field of brake discs, in particular to a brake disc for a vehicle disc brake. According to the technical scheme, the brake disc comprises a brake disc body and an inner hub used for being connected with a wheel axle, the brake disc body is of a double-layer structure, the double-layer brake disc body is fixedly connected through evenly-distributed supporting pieces, the inner hub is fixed to the inner side of the brake disc body, and a center hole is formed in the center of the inner hub. The center position of the wheel axle penetrates through the center hole, bolt holes are formed in the outer side of the inner hub at equal intervals, and fixing bolts are fixed to the positions, corresponding to the bolt holes, of the wheel axle. The brake disc body is arranged to be of a double-layer structure, heat dissipation holes are evenly formed in the surface of the brake disc body, heat dissipation of the brake disc can be more effectively carried out, the brake defect risk caused by overheating is reduced, besides matched fixing of the bolts and the nuts, multiple fixing is achieved through clamping of the rotating clamping plates, and the risk of loosening and falling is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of brake discs, in particular to a brake disc used for a vehicle disc brake. Background Art

[0002] The brake disc is a key component in the braking system of modern vehicles. It is mainly used to slow down or stop the rotation of the wheels. It is part of the disc brake and works with the brake pads and brake calipers to achieve the braking function. The brake disc is usually a flat metal disc made of cast iron, alloy steel or carbon ceramic. It is fixed to the wheel axle of the vehicle and rotates with the wheel.

[0003] When the vehicle brakes, the friction between the brake disc and the friction pad will cause the temperature to rise sharply. In this case, the metal will expand thermally to a certain extent, affecting the normal braking function. In addition, when the brake disc and the wheel axle are installed and fixed, they are usually fixed with a combination of bolts and nuts. During long-term use, there is a high possibility of vibration and loosening, which may lead to the risk of detachment. Therefore, it is necessary to design an auxiliary structure to strengthen the fixation to ensure the stability of the connection. Utility Model Content

[0004] The purpose of the utility model is to provide a brake disc for a vehicle disc brake to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: it includes a brake disc body and an inner hub for connecting to a wheel axle, the brake disc body is a double-layer structure, and the double-layer brake disc bodies are fixedly connected by evenly distributed supporting sheets, the inner hub is fixed to the inner side of the brake disc body, a center hole is opened at the center position of the inner hub, the center position of the wheel axle passes through the center hole, bolt holes are opened equidistantly on the outer side of the inner hub, a fixing bolt is fixed on the wheel axle at a position corresponding to the bolt hole, the fixing bolt passes through the bolt hole and is threadedly connected with a fixing nut, a rotating clamping plate is rotatably connected to the front end of the inner hub, a clamping groove is opened on the fixing bolt at a position corresponding to the rotating clamping plate, an adapting hole is opened on the rotating clamping plate at a position corresponding to the bolt hole, the side wall of the adapting hole is inserted in the clamping groove, and a positioning assembly is arranged between the front end of the inner hub and the rotating clamping plate.

[0006] Preferably, the positioning assembly includes a positioning hole and a positioning block, the positioning holes are opened on the rotating clamping plate and are symmetrically distributed, the positioning block is installed at the front end of the inner hub and its position corresponds one-to-one with the positioning hole, and the front end of the positioning block is inserted into the positioning hole.

[0007] Preferably, a telescopic groove is provided on the front end side wall of the inner hub at a position corresponding to the positioning block, and a telescopic spring is fixed between the inner side wall of the telescopic groove and the positioning block.

[0008] Preferably, the rotating clamping plate is an annular structure, and the adapting hole on the rotating clamping plate is the same size as the bolt hole.

[0009] Preferably, the thickness of the rotating clamping plate is matched to the width of the clamping slot, and the end of the fixing nut abuts against the front end of the rotating clamping plate.

[0010] Preferably, heat dissipation holes are evenly arranged on the brake disc body.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the brake disc body is set as a double-layer structure, and heat dissipation holes are evenly arranged on the surface, which can more effectively dissipate the heat of the brake disc and reduce the risk of brake defects caused by overheating. In addition to the matching fixation of bolts and nuts, multiple fixations are achieved by rotating the clamping plate to reduce the risk of loosening and falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the side cutaway structure of a brake disc for a vehicle disc brake according to the utility model;

[0013] Figure 2 This is a schematic diagram of the front appearance structure of a brake disc for a vehicle disc brake according to the utility model;

[0014] Figure 3 This is a schematic diagram of the appearance structure of a fixing bolt of a brake disc for a vehicle disc brake according to the utility model;

[0015] Figure 4 The utility model is a schematic diagram of the appearance structure of a rotating clamping plate of a brake disc used for a vehicle disc brake.

[0016] In the figure: 1. brake disc body; 11. support plate; 12. heat dissipation hole; 2. inner hub; 21. center hole; 22. bolt hole; 3. wheel axle; 31. fixing bolt; 32. slot; 33. fixing nut; 4. rotating clamp; 41. adapter hole; 42. positioning hole; 5. positioning assembly; 51. telescopic slot; 52. positioning block; 53. telescopic spring. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-4The utility model provides a technical solution: comprising a brake disc body 1 and an inner hub 2 for connecting to a wheel axle 3, the brake disc body 1 is a double-layer structure, and the double-layer brake disc bodies 1 are fixedly connected by evenly distributed support sheets 11, the inner hub 2 is fixed to the inner side of the brake disc body 1, a center hole 21 is opened at the center position of the inner hub 2, the center position of the wheel axle 3 passes through the center hole 21, bolt holes 22 are opened at equal intervals on the outer side of the inner hub 2, a fixing bolt 31 is fixed on the wheel axle 3 and at a position corresponding to the bolt hole 22, the fixing bolt 31 passes through the bolt hole 22 and is threadedly connected with a fixing nut 33, the inner hub 2 The front end is rotatably connected with a rotating card plate 4, a card slot 32 is opened on the fixing bolt 31 and at a position corresponding to the rotating card plate 4, an adapting hole 41 is opened on the rotating card plate 4 and at a position corresponding to the bolt hole 22, and the side wall of the adapting hole 41 is inserted into the card slot 32, and a positioning component 5 is arranged between the front end of the inner hub 2 and the rotating card plate 4. The rotating card plate 4 is an annular structure, the adapting hole 41 on the rotating card plate 4 is the same size as the bolt hole 22, the thickness of the rotating card plate 4 is adapted to the width of the card slot 32, the end of the fixing nut 33 is against the front end of the rotating card plate 4, and the brake disc body 1 is evenly provided with heat dissipation holes 12.

[0019] The positioning assembly 5 includes a positioning hole 42 and a positioning block 52. The positioning hole 42 is opened on the rotating card plate 4 and is symmetrically distributed. The positioning block 52 is installed at the front end of the inner hub 2 and its position corresponds one-to-one with the positioning hole 42. The front end of the positioning block 52 is inserted into the positioning hole 42. A telescopic groove 51 is opened on the side wall of the front end of the inner hub 2 at a position corresponding to the positioning block 52. A telescopic spring 53 is fixed between the inner side wall of the telescopic groove 51 and the positioning block 52.

[0020] Working principle: First, the center position of the wheel shaft 3 passes through the center hole 21, so that the fixing bolt 31 can transmit the bolt hole 22. In this process, the rotation of the rotating card plate 4 can be used to ensure that the adapter hole 41 on the rotating card plate 4 is aligned one by one with the bolt hole 22. After the wheel shaft 3 is inserted into the specified position, the card slot 32 on the fixing bolt 31 is aligned with the position of the rotating card plate 4. By utilizing the deflection of the rotating card plate 4, the side wall of the adapter hole 41 can be inserted into the card slot 32, so that the fixing bolt 31 cannot be withdrawn from the bolt hole 22. Then, the fixing nut 33 is tightened and fixed to achieve a double fixing effect, which increases the connection stability. In this process When the bolt hole 22 is aligned with the adapter hole 41, the positioning hole 42 and the positioning block 52 are in a misaligned position. At this time, the positioning block 52 extends into the telescopic groove 51 to compress the telescopic spring 53. After the rotating card plate 4 is deflected, the position of the positioning hole 42 can be aligned with the position of the positioning block 52. At this time, the telescopic spring 53 pushes the positioning block 52 out and inserts its end into the positioning hole 42 to fix the position of the rotating card plate 4. The operation is simple and convenient. When in use, the brake disc body 1 is divided into a double-layer structure, and there is a certain space inside, which is conducive to the flow of gas, improves the heat dissipation effect, and reduces the risk of brake damage caused by excessive temperature of the brake disc body 1.

[0021] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A brake disc for a vehicle disc brake, comprising a brake disc body (1) and an inner hub (2) for connecting to a wheel axle (3), characterized in that: The brake disc body (1) is a double-layer structure, and the double-layer brake disc body (1) is fixedly connected by evenly distributed support sheets (11); the inner hub (2) is fixed on the inner side of the brake disc body (1); a center hole (21) is opened at the center position of the inner hub (2); the center position of the wheel axle (3) passes through the center hole (21); bolt holes (22) are opened at equal intervals on the outer side of the inner hub (2); fixing bolts (31) are fixed on the wheel axle (3) at positions corresponding to the bolt holes (22); A bolt (31) passes through the bolt hole (22) and is threadedly connected to a fixing nut (33); the front end of the inner hub (2) is rotatably connected to a rotating clamping plate (4); a clamping groove (32) is provided on the fixing bolt (31) at a position corresponding to the rotating clamping plate (4); an adapting hole (41) is provided on the rotating clamping plate (4) at a position corresponding to the bolt hole (22); a side wall of the adapting hole (41) is inserted into the clamping groove (32); and a positioning assembly (5) is provided between the front end of the inner hub (2) and the rotating clamping plate (4).

2. A brake disc for a vehicle disc brake according to claim 1, characterized in that: The positioning assembly (5) comprises a positioning hole (42) and a positioning block (52); the positioning holes (42) are formed on the rotating card plate (4) and are symmetrically distributed; the positioning blocks (52) are mounted on the front end of the inner hub (2) and are positioned one-to-one with the positioning holes (42); and the front end of the positioning blocks (52) is inserted into the positioning holes (42).

3. A brake disc for a vehicle disc brake according to claim 2, characterized in that: A telescopic groove (51) is provided on the front end side wall of the inner hub (2) at a position corresponding to the positioning block (52), and a telescopic spring (53) is fixed between the inner side wall of the telescopic groove (51) and the positioning block (52).

4. The brake disc for a vehicle disc brake according to claim 1, characterized in that: The rotating clamping plate (4) is an annular structure, and the adapting hole (41) on the rotating clamping plate (4) is the same size as the bolt hole (22).

5. The brake disc for a vehicle disc brake according to claim 1, characterized in that: The thickness of the rotating clamping plate (4) is adapted to the width of the clamping slot (32), and the end of the fixing nut (33) abuts against the front end of the rotating clamping plate (4).

6. The brake disc for a vehicle disc brake according to claim 1, characterized in that: The brake disc body (1) is evenly provided with heat dissipation holes (12).

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