Novel hub brake cover

Abstract

The utility model relates to the technical field of brake accessories, and discloses a novel hub brake cover which comprises a hub cover body, a middle shaft sleeve arranged in the center of the hub cover body, a pivoting supporting shaft and a cam mounting seat, the pivoting supporting shaft and the cam mounting seat are arranged on the two sides of the middle shaft sleeve and used for mounting a brake shoe, and a limiting clamping groove is further formed in the hub cover body at one end of the pivoting supporting shaft. A limiting top block is arranged on one side of the limiting clamping groove and on the top of the pivoting supporting shaft, and a brake cable supporting convex lug is further arranged on the other side of the limiting clamping groove and arranged in the radial extension direction of the hub cover body in an outward protruding mode. The problems that an existing hub cover is not suitable for an electric vehicle with large load and high speed, and the hub cover is prone to deformation or tearing damage under the impact of large braking counter-acting force, and riding safety is affected are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of brake accessories, specifically to a novel hub brake cover. Background Technology

[0002] The hub brake cover is the housing component of a hub brake used to support the brake shoes. Generally, it is made of steel plate through multiple processes of punching, stretching, and forming to achieve the required shape, and then assembled into a brake. For example, CN208107017U is a waterproof expansion brake box assembly, in which the brake box assembly is a steel plate forming structure. However, this housing structure is complex and the process is cumbersome. When assembling with the whole vehicle, it needs to be fixed to the frame with bolts, which is inconvenient to install and affects the loading speed. It is not suitable for modern production rhythm.

[0003] Therefore, a hub cover with optimized structure, convenient and quick installation, low cost, and enhanced market competitiveness has emerged. For example, CN217401515U discloses a composite hub cover assembly for brakes, including a main frame for mounting brake shoes and an injection-molded cover plate covering the main frame. The main frame is a circular hollow structure integrally formed from sheet metal, wherein the support shaft, middle sleeve, side sleeve, and positioning adjustment structure are all fixed on the hollow main frame, and the injection-molded cover plate snaps onto the integrally formed sheet metal main frame. However, hub covers with the above structure, due to the hollow sheet metal structure of the main frame, can only be used on relatively lightweight bicycles or lightweight electric vehicles. For electric vehicles with larger loads and higher speeds, it is difficult to withstand the impact of large braking reaction forces, which can lead to deformation or tearing damage of the hub cover assembly, affecting riding safety. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a novel hub cover that solves the problem that existing hub covers are unsuitable for electric vehicles with heavy loads and high speeds, and are prone to deformation or tearing damage under the impact of large braking reaction forces, thus affecting riding safety.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] This utility model is a novel hub brake cover, including a hub cover body, a central bushing located at the center of the hub cover body, and a pivot support shaft and a cam mounting seat located on both sides of the central bushing for mounting brake shoes. The hub cover body at one end of the pivot support shaft is also provided with a limiting groove. A limiting top block is provided on one side of the limiting groove and the top of the pivot support shaft. A brake line support lug is provided on the other side of the limiting groove. The brake line support lug protrudes outward in the radial extension direction of the hub cover body.

[0007] Further improvements are made in that: the hub cover body is designed as a disc-shaped structure, the outer periphery of the disc-shaped structure is provided with an arc-shaped columnar structure, the center of the disc-shaped structure is provided with a central hole adapted to the central shaft sleeve, the two sides of the central hole are provided with a support shaft hole and a cam seat hole, and the outer side of the support shaft hole is also provided with a slot positioning hole adapted to the limiting slot and an installation hole adapted to the limiting top block.

[0008] One improvement is that the limiting slot is designed as a U-shaped slot structure, and the bottom of the limiting slot is provided with a card block that matches the slot positioning hole.

[0009] A further improvement is that the limiting top block is set as a block body, one end of the block body is connected to the limiting slot, and both sides of the block body are set as bent and extended support surfaces that fit into the hub cover body. The support surface is provided with a boss that matches the mounting hole.

[0010] A further improvement is that the brake cable support lug includes a lug support portion, a limiting connection portion, and a bent arc surface support transition portion connecting the lug support portion and the limiting connection portion. The lug support portion is provided with a cable passage hole, and the hub cover body is also provided with a connection hole. The limiting connection portion is provided with a limiting protrusion. The brake cable support lug is adapted to and connected to the connection hole through the limiting protrusion and is externally arranged in the radial extension direction of the hub cover body. The bent arc surface support transition portion is adapted to and fits the arc surface columnar structure.

[0011] A further improvement is that the hubcap body is also provided with a reinforcing rib structure, which is arranged radially along the central hole.

[0012] A further improvement is that: a liner is provided on the inner side of the hub cover body, a limiting protrusion is provided in the middle of the liner, a through hole corresponding to the center hole is provided on the limiting protrusion, the central bushing passes through the through hole and the center hole respectively and is fixedly connected to the hub cover body, and the outer side of the liner is fixedly connected to the hub cover body.

[0013] Further improvements include: the liner is provided with a first clearance groove and a second clearance groove on both sides, and the limiting protrusion is provided with a forming reinforcing rib.

[0014] Compared with the prior art, the advantages of this utility model are:

[0015] The hub cover, formed by setting a central bushing, pivot support shaft, cam mounting seat, limit slot, limit top block and brake cable support lug on a disc-shaped hub cover body formed by sheet metal integral molding, has a simple structure, simplifies the traditional molding process, and has a firm and stable connection with good support stability, while being able to withstand large braking impact loads.

[0016] The limit slot does not require additional fasteners for adjustment and fixation during vehicle assembly. It only needs to be snapped into the frame, making vehicle assembly convenient and quick, with stable positioning, thus improving production efficiency. A limit block is fixedly connected to one side of the limit slot and the top of the pivot support shaft to cover the top of the pivot support shaft, which serves an aesthetic purpose and at the same time provides abutment support for the limit slot, increasing the strength and load-bearing torque of the limit slot and preventing deformation or tearing damage to the limit slot and hub cover body due to braking impact.

[0017] The card slot structure is highly compatible with vehicles, which can improve the braking effect. It is easy to disassemble during after-sales maintenance without damaging the fixed position, thus increasing the reliability and safety of driving. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of one side of this utility model.

[0019] Figure 2 This is a three-dimensional structural diagram of the other side of this utility model.

[0020] Figure 3 This is a schematic diagram of the exploded structure of this utility model.

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the limiting top block of this utility model.

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the liner plate of this utility model.

[0023] Figure 6 This is a schematic diagram of the assembled three-dimensional structure of this utility model.

[0024] Attached image labels:

[0025] Hub cover body 1, center hole 11, support shaft hole 12, cam seat hole 13, slot positioning hole 14, mounting hole 15, connecting hole 16, reinforcing rib structure 17, central bushing 2, pivot support shaft 3, cam mounting seat 4, limiting slot 5, limiting top block 6, block body 61, support surface 62, boss 63, brake cable support lug 7, lug support part 71, limiting connection part 72, bent arc surface support transition part 73, cable hole 74, liner plate 8, limiting boss 81, through hole 82, first clearance groove 83, second clearance groove 84, forming reinforcing rib 85, camshaft 9, rocker arm 10. Detailed Implementation

[0026] To enhance understanding of this utility model, it will be further described in detail below with reference to the accompanying drawings. This embodiment is only used to explain this utility model and does not constitute a limitation on the scope of protection of this utility model.

[0027] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and therefore should not be construed as a limitation of this utility model.

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Figure 1-6 The present invention is a novel hub brake cover, comprising a hub cover body 1, a central bushing 2 located at the center of the hub cover body 1, and pivot support shafts 3 and cam mounting seats 4 located on both sides of the central bushing 2 for mounting brake shoes. The cam mounting seats 4 are provided with mounting holes for cam shafts 9. One end of the brake shoe abuts against the pivot support shaft 3, and the other end abuts against one end of the cam shaft 9. The other end of the cam shaft 9 is connected to the outside of the hub cover body 1 through a rocker arm 10 and fasteners. The hub cover body 1 at one end of the pivot support shaft 3 is also provided with a limiting groove 5. A limiting top block 6 is provided on one side of the limiting groove 5 and the top of the pivot support shaft 3. The other side of the limiting groove 5 is also provided with a brake cable support lug 7. The brake cable support lug 7 is provided with a brake cable fitting through structure. The brake cable support lug 7 protrudes outward in the radial extension direction of the hub cover body 1, corresponding to the brake cable fixing part at the tail of the rocker arm 10. The hubcap body 1 is a disc-shaped structure formed by one-piece sheet metal stamping. An arc-shaped columnar structure surrounds the disc-shaped structure. A central hole 11, adapted to a central bushing 2, is located at the center of the disc-shaped structure. Support shaft holes 12 and cam seat holes 13 are located on both sides of the central hole 11. A slot positioning hole 14, adapted to a limiting slot 5, and a mounting hole 15, adapted to a limiting top block 6, are also located on the outer side of the support shaft hole 12. The central bushing 2, pivot support shaft 3, cam seat 4, limiting slot 5, and limiting top block 6 are fixedly connected to the hubcap body 1 by welding. Brake cable support lug 7 is welded and fixed to the outer side of the arc-shaped columnar structure. The central bushing 2, pivot support shaft 3, cam seat 4, limiting slot 5, and limiting top block 6 are all provided on the one-piece sheet metal disc-shaped hubcap body 1. The hub cover formed by the top block 6 and the brake cable support lug 7 has a simple structure, which simplifies the traditional molding process. It is also firmly and stably connected, with good support stability and the ability to withstand large braking impact loads. The limiting slot 5 is designed so that it does not require additional fasteners for adjustment and fixation during the assembly of the whole vehicle. It only needs to be snapped into the frame, which makes the installation and removal convenient and quick, improving production efficiency. The limiting block 6 is fixedly connected to one side of the limiting slot 5 and the top of the pivot support shaft 3, which covers the top of the pivot support shaft 3, which serves an aesthetic purpose. At the same time, it provides abutment support for the limiting slot 5, increases the strength and load-bearing torque of the limiting slot 5, and prevents the limiting slot 5 and the hub cover body 1 from being deformed or torn due to braking impact, thus ensuring riding safety.

[0030] An alternative implementation, such as Figure 3 , 4 As shown, the limiting slot 5 is a U-shaped slot structure with multiple locking blocks at the bottom that are adapted to the slot positioning holes 14; the limiting top block 6 is a block-shaped body 61, one end of which is connected to the limiting slot 5. The two sides of the block-shaped body 61 are bent and extended support surfaces 62 that fit against the hub cover body 1. The support surfaces 62 are provided with bosses 63 that are adapted to the mounting holes 15. The limiting slot 5 and the limiting top block 6 are riveted or welded together by the locking blocks, bosses 63, and the matching slot positioning holes 14 and mounting holes 15. The locking blocks, bosses 63, and matching slot positioning holes 14 and mounting holes 15 are designed for convenient installation and positioning, more secure and reliable connection, better consistency of product quality, ease of mass production, and improved production efficiency.

[0031] An alternative implementation, such as Figure 1-3 As shown, the hubcap body 1 is also provided with a connecting hole 16. The brake cable support lug 7 protrudes outward through the connecting hole 16 in the radial outward direction of the hubcap body 1. The brake cable support lug 7 includes a lug support part 71, a limiting connecting part 72, and a bent arc surface support transition part 73 connecting the lug support part 71 and the limiting connecting part 72. The lug support part 71 is provided with a cable passage hole 74, and the limiting connecting part 72 is provided with a limiting protrusion adapted to the connecting hole 16. The brake cable support lug 7 is adapted to the connecting hole 16 and connected to the radial side of the hubcap body 1 through the limiting protrusion. The bent arc surface support transition part 73 is adapted to fit the arc surface columnar structure. After the limiting protrusion and the connecting hole 16 are adapted to be installed, they are fixed by riveting and welding. The bent arc surface support transition part 73 and the arc surface columnar structure that fit together can be spot welded to enhance their connection firmness and stability.

[0032] An alternative implementation, such as Figure 1-3 As shown, the hub cover body 1 is also provided with a reinforcing rib structure 17, which is a strip structure or its shape arranged radially along the central hole 11; the arrangement of the radial reinforcing rib structure 17 increases the overall strength and structural stability of the hub cover body 1.

[0033] An alternative implementation, such as Figure 2 , 3As shown in Figure 5, a liner plate 8 is also provided on the inner side of the hub cover body 1. A limiting protrusion 81 is provided in the middle of the liner plate 8. A through hole 82 corresponding to the center hole 11 is provided on the limiting protrusion 81. The central bushing 2 passes through the through hole 82 and the center hole 11 respectively and is fixedly connected to the hub cover body 1. The outer side of the liner plate 8 is fixedly connected to the hub cover body 1. A first clearance groove 83 and a second clearance groove 84 are also provided on both sides of the liner plate 8. A forming reinforcing rib 85 is provided in the limiting protrusion 81. The liner plate 8 is provided on the inner side of the hub cover body 1. The first clearance groove 83 and the second clearance groove 84 are provided at both ends of the liner plate 8 to organically connect the pivot support shaft 3, the cam mounting seat 4 and the central bushing 2 to form an integral structure, which improves the overall strength of the hub cover and provides sufficient impact resistance for the hub brake cover to meet the requirements of safe riding during braking.

[0034] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A novel hub brake cover, comprising a hub cover body (1), a central bushing (2) disposed at the center of the hub cover body (1), and pivot support shafts (3) and cam mounting seats (4) disposed on both sides of the central bushing (2) for mounting brake shoes, characterized in that: The hub body (1) at one end of the pivot support shaft (3) is also provided with a limiting groove (5). A limiting top block (6) is provided on one side of the limiting groove (5) and the top of the pivot support shaft (3). A brake line support lug (7) is provided on the other side of the limiting groove (5). The brake line support lug (7) is convexly arranged in the radial extension direction of the hub body (1).

2. The novel hub cover according to claim 1, characterized in that: The hub cover body (1) is configured as a disc-shaped structure. The outer periphery of the disc-shaped structure is provided with an arc-shaped columnar structure. The center of the disc-shaped structure is provided with a central hole (11) adapted to the central bushing (2). The central hole (11) is provided with a support shaft hole (12) and a cam seat hole (13) on both sides. The support shaft hole (12) is also provided with a slot positioning hole (14) adapted to the limiting slot (5) and an installation hole (15) adapted to the limiting top block (6) on the outer side.

3. The novel hub cover according to claim 2, characterized in that: The limiting slot (5) is configured as a U-shaped slot structure, and the bottom of the limiting slot (5) is provided with a card block that is compatible with the slot positioning hole (14).

4. The novel hub cover according to claim 2, characterized in that: The limiting top block (6) is configured as a block body (61). One end of the block body (61) is connected to the limiting slot (5). Both sides of the block body (61) are configured as bent and extended support surfaces (62) that fit into the hub cover body (1). The support surface (62) is provided with a boss (63) that matches the mounting hole (15).

5. The novel hub cover according to claim 2, characterized in that: The brake cable support lug (7) includes a lug support part (71), a limiting connection part (72), and a bent arc surface support transition part (73) connecting the lug support part (71) and the limiting connection part (72). The lug support part (71) is provided with a cable hole (74), and the hub cover body (1) is also provided with a connection hole (16). The limiting connection part (72) is provided with a limiting protrusion adapted to the connection hole (16). The brake cable support lug (7) is adapted to the connection hole (16) through the limiting protrusion and is externally protruded in the radial extension direction of the hub cover body (1). The bent arc surface support transition part (73) is adapted to fit the arc surface columnar structure.

6. The novel hub cover according to claim 2, characterized in that: The hub cover body (1) is also provided with a reinforcing rib structure (17), which is arranged radially along the central hole (11).

7. The novel hub cover according to any one of claims 1-6, characterized in that: The inner side of the hub cover body (1) is also provided with a liner (8), and a limiting protrusion (81) is provided in the middle of the liner (8). The limiting protrusion (81) is provided with a through hole (82) corresponding to the center hole (11). The central bushing (2) passes through the through hole (82) and the center hole (11) respectively and is fixedly connected to the hub cover body (1). The outer side of the liner (8) is fixedly connected to the hub cover body (1).

8. The novel hub cover according to claim 7, characterized in that: The liner (8) is provided with a first relief groove (83) and a second relief groove (84) on both sides, and the limiting protrusion (81) is provided with a forming reinforcing rib (85).

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