Return device for low-drag-abrasion brake pad of brake disc

Abstract

A brake caliper assembly comprises a brake caliper body, an outer brake lining block, an inner brake lining block and a guide piece, a brake piston and a caliper body hook claw are arranged on the brake caliper body, the brake piston is attached to the inner brake lining block, the caliper body hook claw is attached to the outer brake lining block, and the guide piece is arranged on the outer brake lining block. The inner brake lining block and the outer brake lining block are movably installed on the caliper body support through guide pieces arranged on the two sides, each guide piece is provided with an expansion structure, provides relative expansion force for the inner brake lining block and the outer brake lining block and keeps the relative expansion force continuously, and each guide piece is provided with a limiting structure and limits the brake moving distance of the inner brake lining block and the outer brake lining block. And the guide sheets are adopted to continuously apply expansion force to the brake pads on the two sides, so that the return speed can be effectively increased.

Description

Technical Field

[0001] The invention relates to a structural improvement of a brake device, in particular to a brake disc low-drag brake pad return device. Background Art

[0002] The braking device is the main device for controlling the speed of a vehicle. It uses braking hydraulic pressure or air pressure to clamp the brake pads on the brake disc, thereby achieving the effect of decelerating the vehicle. In existing braking devices, the brake pads are pushed by the brake piston to produce a clamping effect. When the brakes are released, there will be an asynchrony problem in the return of the brake pads and the brake piston. Therefore, the brake pads and the brake disc do not reach a reasonable gap, resulting in the problem of dragging. Continuous dragging will aggravate the wear of the brake pads, increase the temperature of the braking device, reduce the braking ability, and pose a safety hazard to vehicle driving.

[0003] Existing braking devices are provided with guide and rebound structures to assist in returning to the original position, but the effect achieved is not obvious. The brake pad and the brake piston still cannot effectively fit together when the brake is released. Especially for the common floating brake caliper, the movements of the inner and outer brake pads are characterized by a sequence, and the problem of dragging is uneven, so the requirements for returning to the original position are higher. Summary of the invention

[0004] The object of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a brake disc low-drag brake pad return device.

[0005] The technical solution adopted by the present invention to solve the above-mentioned problem is: the brake installation assembly includes a steering knuckle assembly, a brake caliper assembly, a caliper body bracket and a brake disc, the brake caliper assembly is installed on the steering knuckle assembly through the caliper body bracket, the brake disc is installed at the shaft end of the steering knuckle assembly, the brake caliper assembly includes a brake caliper body, an outer brake pad, an inner brake pad, and a guide plate, the brake caliper body is provided with a brake piston and a caliper body hook claw, the brake piston is fitted with the inner brake pad, the caliper body hook claw is fitted with the outer brake pad, the inner brake pad and the outer brake pad are movably installed on the caliper body bracket by arranging guide plates on both sides, the guide plate has an expansion structure, and provides and continuously maintains a relative expansion force for the inner brake pad and the outer brake pad, and the guide plate has a limiting structure, and limits the braking movement distance of the inner brake pad and the outer brake pad. By using guide plates to continuously apply expansion force to the brake pads on both sides, the return speed can be effectively increased without affecting the normal braking process. The expansion effect is achieved along with the reduction of the braking effect, which effectively improves the fit between the brake pads and the brake piston, reduces the problem of drag and wear, and improves the braking performance. At the same time, the brake pads work and move within the specified range, which can avoid the wear of the brake pads and the change of braking efficiency.

[0006] Furthermore, the guide piece has an elastic expansion structure, which is slidably arranged relative to the sides of the outer brake pad and the inner brake pad at the same time, and the outer brake pad and the inner brake pad are relatively expanded under the elastic action. The elastic expansion structure uses the material elasticity of the guide piece itself to achieve the expansion effect, and can continue to produce the effect for a long time in a small space, and has a long working life.

[0007] Furthermore, the elastic expansion structure includes an elastic body and a guide slope. The guide slope is formed on the guide plate body by the elastic body. The guide slope is an outward-stretched slope. The side edges of the outer brake pad and the inner brake pad are slidably arranged with the guide slope. The elastic body is the main elasticity generating structure. It can be bent to form a circular structure, which effectively improves the structural elasticity, is not easy to fatigue the material, and has a long service life. The guide slope generates an extrusion force to one side, which effectively realizes stable operation.

[0008] Furthermore, the sides of the outer brake pad and the inner brake pad are both provided with outer bevels, and the outer bevels and the guide bevels are arranged in a surface sliding manner. The outer bevels and the guide bevels are arranged opposite to each other, which can reduce sliding resistance and improve the sensitivity of returning to the original position.

[0009] Furthermore, the limiting structure is arranged on the guide inclined plane, and the limiting structure includes an inner limiting body and an outer limiting body, the inner limiting body is arranged at the inner end of the guide inclined plane, and the outer limiting body is arranged at the junction of the guide inclined plane and the elastic body, and the side edges of the inner brake pad and the outer brake pad slide on the surface between the inner limiting body and the outer limiting body. The limiting structure at both ends of the sliding position can play a role in limiting the working distance, and effectively keep the brake pad in a normal working range.

[0010] Furthermore, the inner limiting body is a blocking piece formed by bending the guide slope, and the outer limiting body is a blocking piece formed by stamping and warping on the guide slope, and the warping edge of the blocking piece is a blocking rigid structure. Both the blocking piece and the blocking piece are formed by bending the material body of the guide piece, making full use of their own structure and facilitating processing.

[0011] Furthermore, the guide plate includes two symmetrically arranged brake pad connection parts, the two brake pad connection parts are respectively connected to the outer brake pad and the inner brake pad, the two brake pad connection parts are connected through an intermediate connection body, and the brake pad connection parts are each individually provided with an elastic expansion structure. The brake pad connection parts are respectively arranged corresponding to the brake pads on both sides, and are formed into a structure interconnected on both sides through the intermediate connection body, so that the work between the brake pads on both sides is linked to each other.

[0012] Furthermore, the brake pad connection part has a bracket connector, which includes an inner groove plate, a deep groove plate, and an outer groove plate, and is adjacently connected to form an angled structure. The inner groove plate and the deep groove plate are respectively arranged corresponding to the groove bottom surface and the groove side edge of the pad installation groove of the caliper body bracket, and the outer groove plate is arranged corresponding to the outer facing surface of the lining installation groove. The deep groove plate and the outer groove plate are both extended outward to form a fixed folding edge, and the fixed folding edge is arranged to fit the side surface of the bracket connector. The bracket connector is used for fixed installation with the caliper body bracket, and is correspondingly formed with the groove and surface on the corresponding caliper body bracket, and forms a side edge wrapping structure, which has a strong fit and fixation effect, is reliable, and prevents the brake structure from slipping and loosening.

[0013] Furthermore, the inner plate of the slot is extended outward to form an elastic expansion structure, and a rebound fold is formed at the end of the guide slope by reverse bending, and the rebound fold forms an elastic angle and is arranged adjacent to the inner plate of the slot. The function of the rebound fold is to provide reverse support for the guide slope, improve the working elasticity of the guide slope, and do not increase the volume of the structure, so that the working life is longer and it can adapt to long-term repeated actions.

[0014] Furthermore, the intermediate connector is arranged corresponding to the clamp groove of the bracket connector, and the intermediate connector is provided with a claw corresponding to the clamp groove, and the claw is bent and arranged to fit in the clamp groove, and an upper fixing plate is also arranged on the top of the intermediate connector, and the upper fixing plate is bent and fixed to fit the top surface of the bracket connector. The intermediate connector also has a fixing structure, and the intermediate connector is provided with a corresponding surrounding structure for the clamp groove and the outer surface, and the fixing effect is strong, and the overall fixing of the guide piece can be achieved.

[0015] Compared with the prior art, the present invention has the following advantages and effects: the present design is an improvement on a device for accelerating the return of brake pads for a brake disc, which can effectively solve the problem of brake pad drag, reduce the wear of brake pads, extend the service life, improve the braking efficiency of the vehicle, and improve driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the brake mounting assembly.

[0017] Figure 2 It is a structural schematic diagram of the brake caliper assembly.

[0018] Figure 3 It is a schematic diagram of the structure of the caliper bracket and the brake pad.

[0019] Figure 4 It is a schematic diagram of the structure of the clamp body bracket and the guide plate.

[0020] Figure 5 It is a schematic diagram of the structure of the brake pad and the guide plate.

[0021] Figure 6 It is a structural schematic diagram of the guide plate.

[0022] In the figure: 1, steering knuckle assembly, 2, brake caliper assembly, 3, caliper body bracket, 4, brake disc, 5, brake caliper body, 6, outer brake pad, 7, inner brake pad, 8, guide plate, 9, expansion structure, 10, restriction structure, 11, elastic expansion structure, 12, elastic body, 13, guide slope, 14, outer slope, 15, inner restriction body, 16, outer restriction body, 17, brake pad connecting part, 18, intermediate connecting body, 19, groove inner plate, 20, groove depth plate, 21, groove outer plate, 22, fixed folding edge, 23, rebound folding edge, 24, claw, 25, upper fixed plate. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and by way of examples. The following examples are intended to explain the present invention but the present invention is not limited to the following examples.

[0024] A brake disc low-drag brake pad return device, the brake mounting assembly includes a steering knuckle assembly 1, a brake caliper assembly 2, a caliper body bracket 3 and a brake disc 4, the brake caliper assembly 2 is installed on the steering knuckle assembly 1 through the caliper body bracket 3, and the brake disc 4 is installed at the axial end of the steering knuckle assembly 1, characterized in that: the brake caliper assembly 2 includes a brake caliper body 5, an outer brake pad 6, an inner brake pad 7, and a guide plate 8, the brake caliper body 5 is provided with a brake piston and a caliper body hook claw, the brake piston is fitted with the inner brake pad 7, the caliper body hook claw is fitted with the outer brake pad 6, the inner brake pad 7 and the outer brake pad 6 are movably installed on the caliper body bracket 3 by arranging guide plates 8 on both sides, the guide plate 8 has an expansion structure 9, and provides and continuously maintains relative expansion force for the inner brake pad 7 and the outer brake pad 6, the guide plate 8 has a limiting structure 10, and limits the braking movement distance of the inner brake pad 7 and the outer brake pad 6.

[0025] The guide piece 8 has an elastic expansion structure 11, and the elastic expansion structure 11 is slidably arranged relative to the sides of the outer brake pad 6 and the inner brake pad 7. The outer brake pad 6 and the inner brake pad 7 are relatively expanded under the action of elasticity.

[0026] The elastic expansion structure 11 includes an elastic body 12 and a guide slope 13. The guide slope 13 is formed on the main body of the guide plate 8 through the elastic body 12. The guide slope 13 is an outwardly stretched slope. The sides of the outer brake pad 6 and the inner brake pad 7 are slidably arranged with the guide slope 13.

[0027] The sides of the outer brake pad 6 and the inner brake pad 7 are both provided with an outer inclined surface 14 , and the outer inclined surface 14 and the guide inclined surface 13 are arranged to slide with each other.

[0028] The limiting structure 10 is arranged on the guide bevel 13, and the limiting structure 10 includes an inner limiting body 15 and an outer limiting body 16. The inner limiting body 15 is arranged at the inner end of the guide bevel 13, and the outer limiting body 16 is arranged at the junction of the guide bevel 13 and the elastic body 12. The side edges of the inner brake pad 7 and the outer brake pad 6 slide on the surface between the inner limiting body and the outer limiting body.

[0029] The inner limiting body 15 is a blocking piece formed by bending the guiding inclined surface 13, and the outer limiting body 16 is a blocking piece formed by stamping and warping on the guiding inclined surface 13, and the warping edge of the blocking piece is a blocking rigid structure.

[0030] The guide plate 8 includes two symmetrically arranged brake pad connecting parts 17, which are respectively connected to the outer brake pad 6 and the inner brake pad 7. The two brake pad connecting parts 17 are connected through an intermediate connecting body 18, and the brake pad connecting parts 17 are each individually provided with an elastic expansion structure 11.

[0031] The brake pad connecting part 17 has a bracket connecting body, which includes an inner groove plate 19, a deep groove plate 20, and an outer groove plate 21 and are adjacently connected to form an angle structure. The inner groove plate 19 and the deep groove plate 20 are respectively arranged corresponding to the groove bottom surface and the groove side edge of the pad mounting groove of the caliper body bracket, and the outer groove plate 21 is arranged corresponding to the outer facing surface of the pad mounting groove. The deep groove plate 20 and the outer groove plate 21 are both extended outward to form a fixed folded edge 22, and the fixed folded edge 22 is arranged to fit the side surface of the bracket connecting body.

[0032] The inner plate 19 of the groove extends outward to lead out the elastic expansion structure 11 , and a rebound fold 23 is formed by reverse bending at the end of the guide slope 13 . The rebound fold 23 forms an elastic bend and is arranged adjacent to the inner plate 19 of the groove.

[0033] The intermediate connector 18 is arranged corresponding to the clamp groove of the bracket connector, and a claw 24 is arranged corresponding to the clamp groove of the intermediate connector 18. The claw 24 is bent and arranged to fit into the clamp groove. An upper fixing plate 25 is also arranged on the top of the intermediate connector 18, and the upper fixing plate 25 is bent and fixed to fit the top surface of the bracket connector.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention, and that the embodiments should be considered exemplary rather than restrictive in any respect, and that the scope of the present invention is defined by the claims rather than the above description, and that all variations falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0035] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A brake disc low-drag brake pad return device, the brake mounting assembly comprises a steering knuckle assembly (1), a brake caliper assembly (2), a caliper body bracket (3) and a brake disc (4), the brake caliper assembly (2) is mounted on the steering knuckle assembly (1) through the caliper body bracket (3), and the brake disc (4) is mounted on the shaft end of the steering knuckle assembly (1), characterized in that: The brake caliper assembly (2) comprises a brake caliper body (5), an outer brake pad (6), an inner brake pad (7), and a guide plate (8). The brake caliper body (5) is provided with a brake piston and a caliper body hook claw. The brake piston is fitted with the inner brake pad (7), and the caliper body hook claw is fitted with the outer brake pad (6). The inner brake pad (7) and the outer brake pad (6) are movably mounted on a caliper body bracket (3) by providing guide plates (8) on both sides. The guide plate (8) has an expansion structure (9) and provides and continuously maintains a relative expansion force for the inner brake pad (7) and the outer brake pad (6). The guide plate (8) has a limiting structure (10) and limits the braking movement distance of the inner brake pad (7) and the outer brake pad (6).

2. The brake disc low-drag brake pad return device according to claim 1, characterized in that: The guide plate (8) has an elastic expansion structure (11), and the elastic expansion structure (11) is arranged to slide relative to the side edges of the outer brake pad (6) and the inner brake pad (7). The outer brake pad (6) and the inner brake pad (7) expand relative to each other under the action of elasticity.

3. The brake disc low-wear brake pad return device according to claim 2, characterized in that: The elastic expansion structure (11) comprises an elastic body (12) and a guide bevel (13). The guide bevel (13) is formed on the main body of the guide plate (8) through the elastic body (12). The guide bevel (13) is an outwardly extending bevel. The side edges of the outer brake pad (6) and the inner brake pad (7) are slidably arranged with the guide bevel (13).

4. The brake disc low-drag brake pad return device according to claim 3, characterized in that: The sides of the outer brake pad (6) and the inner brake pad (7) are both provided with an outer inclined surface (14), and the outer inclined surface (14) and the guide inclined surface (13) are arranged in a surface sliding manner.

5. The brake disc low-wear brake pad return device according to claim 3, characterized in that: The limiting structure (10) is arranged on the guiding inclined surface (13), and the limiting structure (10) comprises an inner limiting body (15) and an outer limiting body (16), wherein the inner limiting body (15) is arranged at the inner end of the guiding inclined surface (13), and the outer limiting body (16) is arranged at the junction of the guiding inclined surface (13) and the elastic body (12), and the side edges of the inner brake pad (7) and the outer brake pad (6) slide on the surface between the inner limiting body and the outer limiting body.

6. The brake disc low-drag brake pad return device according to claim 5, characterized in that: The inner limiting body (15) is a blocking piece formed by bending the guiding inclined surface (13), and the outer limiting body (16) is a blocking piece formed by punching and warping on the guiding inclined surface (13), and the warped edge of the blocking piece is a blocking rigid structure.

7. The brake disc low-drag brake pad return device according to claim 3, characterized in that: The guide plate (8) comprises two symmetrically arranged brake pad connecting parts (17), the two brake pad connecting parts (17) are respectively connected to the outer brake pad (6) and the inner brake pad (7), the two brake pad connecting parts (17) are connected via an intermediate connecting body (18), and the brake pad connecting parts (17) are each individually provided with an elastic expansion structure (11).

8. The brake disc low-drag brake pad return device according to claim 7, characterized in that: The brake pad connection part (17) has a bracket connection body, which includes an inner groove plate (19), a deep groove plate (20), and an outer groove plate (21) and is adjacently connected to form an angled structure. The inner groove plate (19) and the deep groove plate (20) are respectively arranged corresponding to the groove bottom surface and the groove side edge of the pad installation groove of the caliper body bracket, and the outer groove plate (21) is arranged corresponding to the outer facing surface of the pad installation groove. The deep groove plate (20) and the outer groove plate (21) are both extended outward to form a fixed folding edge (22), and the fixed folding edge (22) is arranged to fit the side surface of the bracket connection body.

9. The brake disc low-drag brake pad return device according to claim 8, characterized in that: The inner groove plate (19) extends outward to lead out an elastic expansion structure (11), and a rebound fold (23) is formed by reverse bending at the end of the guide inclined surface (13). The rebound fold (23) forms an elastic bend and is arranged adjacent to the inner groove plate (19).

10. The brake disc low-drag brake pad return device according to claim 8, characterized in that: The intermediate connector (18) is arranged corresponding to the clamp groove of the bracket connector, and the intermediate connector (18) is provided with a clamping claw (24) corresponding to the clamp groove, and the clamping claw (24) is arranged to bend and fit into the clamp groove. An upper fixing plate (25) is also arranged on the top of the intermediate connector (18), and the upper fixing plate (25) is bent and fixed to fit the top surface of the bracket connector.

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