Friction plate active return device and brake caliper assembly

Abstract

The utility model provides a friction plate active return device and a brake caliper assembly, the friction plate active return device comprises a caliper support and two friction plates oppositely arranged on the caliper support, and an elastic return piece is arranged between each of the two ends of each friction plate and the caliper support. One end of the elastic return piece is provided with a first connecting part which is fixed with the caliper bracket, the other end of the elastic return piece is provided with a second connecting part which is in contact with the friction plate back plate, and the first connecting part is connected with the second connecting part through an elastic part. According to the embodiment, the elastic return piece is arranged between the friction plate and the caliper support, the friction plate is pushed in the direction away from the brake disc under the elastic action of the elastic return piece on the friction plate, active return of the friction plate is achieved, and the dragging torque of the brake disc is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle braking technology, specifically relating to a friction pad active return device and a brake caliper assembly. Background Technology

[0002] Existing brake caliper assemblies typically include a caliper body, a caliper bracket, an inner friction pad, an outer friction pad, and a brake disc positioned between the inner and outer friction pads. A hydraulic cylinder is installed in the caliper body. During braking, the piston of the hydraulic cylinder pushes the inner and outer friction pads to move in the direction of clamping the brake disc, and finally clamps the brake disc to achieve vehicle braking. After braking, the piston first returns to its original position, and the inner and outer friction pads are then separated and moved away from the brake disc by the rotation of the brake disc.

[0003] However, since the inner and outer friction pads do not actively return to their original positions, they may fail to reset in time when braking ends. This can lead to a dragging torque between the brake disc and the inner and outer friction pads. Over time, this can increase friction pad wear, shorten the lifespan of the brakes, and increase the vehicle's energy consumption. Utility Model Content

[0004] The purpose of this invention is to provide a friction plate active return device, which can at least solve some of the defects existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A friction pad active return device includes a caliper bracket and two friction pads disposed opposite each other on the caliper bracket. Each friction pad has an elastic return member between its two ends and the caliper bracket. One end of the elastic return member has a first connecting portion that is fixed to the caliper bracket, and the other end of the elastic return member has a second connecting portion for contacting the back plate of the friction pad. The first connecting portion and the second connecting portion are connected by an elastic portion.

[0007] Furthermore, the elastic return component is integrally wound from a steel wire spring.

[0008] Furthermore, the first connecting part is made of steel wire spring wound into a U-shape or C-shape.

[0009] Furthermore, the elastic portion extends from the first connecting portion toward the friction piece on the same side and is wound into a C-shape.

[0010] Furthermore, the elastic portion extends from the first connecting portion toward the friction plate on the opposite side and is wound into a wave shape or a ┌ shape.

[0011] Furthermore, the friction plate back plate is provided with a first hole, and the end of the second connecting part is inserted into the first hole.

[0012] Furthermore, the caliper bracket has a first limiting groove on the side wall that contacts the friction plate for fixing the first connecting part, and the extending direction of the first groove is parallel to the moving direction of the friction plate.

[0013] Furthermore, the caliper bracket has a second hole, and the end of the first connecting part is inserted into the second hole.

[0014] Furthermore, the friction plate is provided with a second limiting groove at the first limiting groove of the caliper bracket, the surface of the first connecting part protrudes from the surface of the first limiting groove, and the protruding part is located in the second limiting groove.

[0015] In addition, the present invention also provides a brake caliper assembly, including a caliper body, a brake disc and the above-mentioned friction pad active return device, wherein the caliper body is supported on the caliper bracket, and the two friction pads are placed in the caliper body, and the brake disc is located between the two friction pads.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] (1) The friction pad active return device provided by this utility model sets an elastic return member between the friction pad and the caliper bracket. The elastic force of the elastic return member on the friction pad pushes the friction pad away from the brake disc, thereby realizing the active return of the friction pad and reducing the drag torque of the brake disc.

[0018] (2) The friction plate active return device provided by this utility model sets a limiting groove on the caliper bracket and the friction plate, and places the first connecting part of the elastic return member in its limiting groove, so that the first connecting part can play a limiting role on the friction plate and effectively prevent the friction plate from jumping up during braking.

[0019] The present invention will be further described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the active return device for the friction plate in Embodiment 1 of this utility model;

[0021] Figure 2 This is a schematic diagram of the elastic return member in Embodiment 1 of this utility model;

[0022] Figure 3 This is a schematic diagram of the caliper bracket in Embodiment 1 of this utility model;

[0023] Figure 4 This is an assembly diagram of the elastic return member and the caliper bracket in Embodiment 1 of this utility model;

[0024] Figure 5 This is a schematic diagram of the assembly of the elastic return member and the friction plate in Embodiment 1 of this utility model;

[0025] Figure 6 This is a schematic diagram of the elastic return member in Embodiment 2 of this utility model;

[0026] Figure 7 This is a schematic diagram of the assembly of the elastic return member and the caliper bracket in Embodiment 2 of this utility model;

[0027] Figure 8 This is a schematic diagram of the elastic return member in Embodiment 3 of this utility model;

[0028] Figure 9 This is a schematic diagram of the assembly of the elastic return member and the caliper bracket in Embodiment 3 of this utility model;

[0029] Figure 10 This is a schematic diagram of the brake caliper assembly in Embodiment 4 of this utility model.

[0030] Explanation of reference numerals in the attached drawings: 1. Caliper bracket; 2. Elastic return element; 3. Friction pad; 4. Caliper body; 11. First limiting groove; 12. Second hole; 21. First connecting part; 22. Elastic part; 23. Second connecting part; 31. First hole; 32. Second limiting groove. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0032] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, abutting connections, or integral connections. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] Example 1:

[0036] like Figures 1 to 5 As shown, this embodiment provides a friction pad active return device, including a caliper bracket 1 and two friction pads 3 disposed opposite to each other on the caliper bracket 1. Each friction pad 3 has an elastic return member 2 between its two ends and the caliper bracket 1. One end of the elastic return member 2 has a first connecting portion 21 fixed to the caliper bracket 1, and the other end of the elastic return member 2 has a second connecting portion 23 for contacting the back plate of the friction pad 3. The first connecting portion 21 and the second connecting portion 23 are connected by an elastic portion 22.

[0037] In some embodiments, the elastic return member 2 is integrally wound from a steel wire spring; specifically... Figure 2 In the illustrated embodiment, the first connecting portion 21 is formed by winding a steel wire spring into a U-shape or C-shape, and is snapped onto the caliper bracket 1 through the U-shape or C-shape structure; the elastic portion 22 extends from the first connecting portion 21 toward the friction plate 3 on the same side and is wound into a C-shape; the second connecting portion 23 is a bent section extending from the end of the elastic portion 22 toward the back plate of the friction plate 3, and the end of the second connecting portion 23 abuts vertically against the back plate of the friction plate 3. In the initial state, the elastic return members 2 on the two friction plates 3 are slightly deformed, generating elastic force, pushing the friction plates 3 outward (i.e., making the two friction plates 3 move away from each other). As the friction material wears, the two friction plates 3 will move toward the center of the brake disc, and the elastic return members 2 will also gradually deform, always maintaining elastic force on the friction plates 3, pushing the friction plates 3 away from the brake disc, realizing the active return of the friction plates 3, and reducing the drag torque of the brake disc.

[0038] Optimized implementation methods, such as Figure 5As shown, the friction plate 3 has a first hole 31 on its back plate, and the end of the second connecting part 23 is inserted into the first hole 31, thereby limiting the position of the elastic return member 2 on the friction plate 3 to ensure the effect of the friction plate 3 and realize the active return of the friction plate 3.

[0039] Regarding the fixed assembly method of the elastic return member 2 on the caliper bracket 1, in some embodiments, such as Figure 3 and Figure 4 As shown, the caliper bracket 1 has a first limiting groove 11 on the side wall that contacts the friction plate 3 for fixing the first connecting part 21. The extending direction of the first groove 11 is parallel to the moving direction of the friction plate 3. Specifically, the first limiting groove 11 is provided on the inner side wall of the vertical section of the caliper bracket 1. The steel wire spring of the first connecting part 21 is engaged in the first limiting groove 11. At the same time, the elastic part 22 connected to the first connecting part 21 extends upward from the outside of the vertical section of the caliper bracket 1 and wraps around the upper surface of the friction plate 3 on the same side. This fixes the elastic return member 2 on the caliper bracket 1 and prevents relative movement between it and the caliper bracket 1, ensuring the stability of the action of the other end of the elastic return member 2 on the friction plate 3.

[0040] Preferred, such as Figure 3 and Figure 4 As shown, a second hole 12 is provided on the caliper bracket 1. Specifically, the second hole 12 is provided on the vertical section of the caliper bracket 1 on the side away from the elastic part 22 of the elastic return member 2. The end of the first connecting part 21 is inserted into the second hole 12. In this way, the two ends of the first connecting part 21 are limited by the elastic part 22 and the second hole 12 respectively, which further ensures the stability of the fixed assembly of the elastic return member 2 and the caliper bracket 1.

[0041] Optimized implementation methods, such as Figure 1 and Figure 5 As shown, the friction plate 3 is provided with a second limiting groove 32 corresponding to the first limiting groove 11 of the caliper bracket 1. At the same time, the surface of the first connecting part 21 is designed to protrude from the surface of the first limiting groove 11, and the protruding part is located in the second limiting groove 32. In this way, the first connecting part 21 located in the second limiting groove 32 can limit the friction plate 3, thereby preventing the friction plate 3 from jumping up under the force during braking (vibration). This effectively solves the problem of the friction plate 3 jumping up during braking and impacting the pressure spring and pressure plate, as well as the problem of abnormal noise caused by the lower section of the friction plate 3 colliding with the horizontal plane of the caliper bracket 1 after jumping back.

[0042] Example 2:

[0043] This embodiment provides a friction pad active return device, the specific structure of which is largely the same as that of Embodiment 1 above, except that the elastic return member 2 in this embodiment adopts the following... Figure 6 The structure shown is the same as that of the first connecting part 21 and the second connecting part 23 of the elastic return member 2 as described in Embodiment 1 above, while the elastic part 22 of the elastic return member 2 is formed by extending from the first connecting part 21 toward the friction piece 3 on the opposite side and winding it into a ┌ shape.

[0044] In this embodiment, the assembly method of the elastic return member 2 with the caliper bracket 1 and the friction plate 3 is as follows: Figure 7 As shown, the first connecting part 21 of the elastic return member 2 is fixed in the first groove 11 of the caliper bracket 1 and the second limiting groove 32 of the corresponding friction plate 3. The elastic part 22 of the elastic return member 2 extends towards the other friction plate 3, and the second connecting part 23 connected to the elastic part 22 exerts a force on the friction plate 3 accordingly.

[0045] Example 3:

[0046] This embodiment provides a friction pad active return device, the specific structure of which is largely the same as that of Embodiment 1 above, except that the elastic return member 2 in this embodiment adopts the following... Figure 8 The structure shown is the same as that of the first connecting part 21 and the second connecting part 23 of the elastic return member 2 as described in Embodiment 1 above, while the elastic part 22 of the elastic return member 2 is formed by extending from the first connecting part 21 toward the friction piece 3 on the opposite side in a wave shape.

[0047] In this embodiment, the assembly method of the elastic return member 2 with the caliper bracket 1 and the friction plate 3 is as follows: Figure 9 As shown, the first connecting part 21 of the elastic return member 2 is fixed in the first groove 11 of the caliper bracket 1 and the second limiting groove 32 of the corresponding friction plate 3. The elastic part 22 of the elastic return member 2 extends towards the other friction plate 3, and the second connecting part 23 connected to the elastic part 22 exerts a force on the friction plate 3 accordingly.

[0048] It should be noted that the elastic return member 2 can also be wound into other shapes. The above-described elastic return member 2 structure provided in this embodiment is only a few simple winding schemes and should not be construed as a limitation of this application.

[0049] Example 4:

[0050] like Figure 10As shown, this embodiment provides a brake caliper assembly, including a caliper body 4, a brake disc, and the friction pad active return device described in the previous embodiment. The caliper body 4 is supported on the caliper bracket 1, and the two friction pads 3 are placed inside the caliper body 4. The brake disc is located between the two friction pads 3. This embodiment's brake caliper assembly employs a friction pad active return device. Upon braking, the two friction pads 3 can promptly and actively return to their original positions, thereby avoiding dragging torque between the brake disc and the friction pads 3. This effectively improves the service life of the brake caliper assembly and reduces vehicle energy consumption.

[0051] The above examples are merely illustrative of the present invention and do not constitute a limitation on the scope of protection of the present invention. All designs that are the same as or similar to the present invention are within the scope of protection of the present invention.

Claims

1. A friction pad active return device, comprising a caliper bracket and two friction pads disposed opposite each other on the caliper bracket, characterized in that: Each friction pad has an elastic return member between its two ends and the caliper bracket. One end of the elastic return member has a first connecting part that is fixed to the caliper bracket, and the other end of the elastic return member has a second connecting part that is in contact with the back plate of the friction pad. The first connecting part and the second connecting part are connected by an elastic part.

2. The friction plate active return device as described in claim 1, characterized in that: The elastic return component is integrally wound from a steel wire spring.

3. The friction plate active return device as described in claim 2, characterized in that: The first connecting part is made of steel wire spring wound into a U-shape or C-shape.

4. The friction plate active return device as described in claim 3, characterized in that: The elastic portion extends from the first connecting portion toward the friction plate on the same side and is wound into a C-shape.

5. The friction plate active return device as described in claim 3, characterized in that: The elastic portion extends from the first connecting portion toward the friction plate on the opposite side and is wound into a wave shape or a ┌ shape.

6. The friction plate active return device as described in claim 2, characterized in that: The friction plate back plate is provided with a first hole, and the end of the second connecting part is inserted into the first hole.

7. The friction plate active return device according to any one of claims 1-6, characterized in that: The caliper bracket has a first limiting groove on the side wall that contacts the friction plate for fixing the first connecting part, and the extending direction of the first limiting groove is parallel to the moving direction of the friction plate.

8. The friction plate active return device as described in claim 7, characterized in that: The caliper bracket has a second hole, and the end of the first connecting part is inserted into the second hole.

9. The friction plate active return device as described in claim 7, characterized in that: The friction plate is provided with a second limiting groove at the first limiting groove of the caliper bracket. The surface of the first connecting part protrudes from the surface of the first limiting groove, and the protruding part is located in the second limiting groove.

10. A brake caliper assembly, characterized in that: The device includes a caliper body, a brake disc, and a friction pad active return device as described in any one of claims 1-9, wherein the caliper body is supported on the caliper bracket, and the two friction pads are placed inside the caliper body, and the brake disc is located between the two friction pads.

Images