Auxiliary structure for reducing noise of brake caliper

Abstract

The utility model discloses an auxiliary structure for reducing noise of a brake caliper. The auxiliary structure mainly comprises a brake block clamp spring, a ball and a caliper body sliding groove, the ball is installed between the caliper body sliding groove and the brake block clamp spring, the brake block clamp spring is assembled on the support, and the auxiliary structure is located on the lower side and mainly comprises a brake block clamp spring pressure-bearing structure and a brake block clamp spring ball rolling sliding structure in sequence from bottom to top. One or more balls can be arranged in the clamp body sliding groove. According to the auxiliary structure, the gravity generated by the shell assembly acts on the brake block clamping spring, the pressure of the guide pin and the pin hole is reduced, the brake block clamping spring plays a buffering role, and the jolting and knocking abnormal sound of the brake caliper can be reduced. Meanwhile, original sliding friction force of the guide pin is converted into rolling friction force of the balls through the balls, sliding force of the shell assembly is effectively reduced, and dragging torque of the brake caliper is reduced.

Description

Technical Field

[0001] The utility model relates to an automobile brake component, in particular to an auxiliary structure for reducing brake caliper noise. Background Art

[0002] With the development of the automobile industry and the improvement of living standards, especially the rapid development of electric vehicles, people have higher and higher requirements for the comfort of vehicles during driving. Bumping and abnormal noise are often complained by consumers, and electric vehicles are more obvious. At the same time, due to the high requirements for the range of electric vehicles, automobile manufacturers have higher and higher requirements for the drag torque of brake calipers, and ordinary conventional calipers can no longer meet the needs.

[0003] In order to solve the problem of guide pin bumping and abnormal noise, the current brake caliper mainly adopts measures such as reducing the gap between the guide pin and the pin hole, adding guide pin bushings, and increasing the interference of the pin guard. This will lead to an increase in the sliding resistance of the brake caliper, which is not conducive to reducing the drag torque.

[0004] In order to reduce the drag torque of the brake caliper, the brake calipers with low drag structures that are currently used in the market are all used to reduce the sliding resistance of the brake pad and increase the active return mechanism of the brake pad to reduce the drag torque of the brake caliper. The sliding resistance of the brake caliper is composed of the sliding resistance of the brake pad and the sliding resistance of the housing assembly. Due to the existence of the gravity of the housing assembly, the sliding resistance of the housing assembly cannot be eliminated. Simply adding the active return mechanism of the brake pad can no longer continue to reduce the drag torque of the brake caliper caused by the sliding resistance of the housing. At present, the drag torque of the floating brake caliper in the market is difficult to achieve below 0.5Nm. Since the rolling friction coefficient and the sliding friction coefficient differ by more than 10 times, the existing technology lacks the ability to reduce the floating brake caliper's drag torque to below 0.1Nm. Utility Model Content

[0005] In order to solve the problems existing in the background technology, the purpose of the utility model is to design and provide an auxiliary structure of the brake caliper to reduce the noise of the brake caliper. The brake caliper sliding structure applies the gravity generated by the housing assembly to the brake block retaining spring, greatly reducing the pressure between the guide pin and the pin hole in the brake caliper sliding structure, and reducing the bumps and abnormal noises through the buffering effect of the brake block retaining spring. At the same time, the sliding friction force of the original design is converted into rolling friction force through the ball, effectively reducing the sliding force of the housing assembly, thereby reducing the drag torque of the brake caliper.

[0006] The utility model adopts the following technical solutions:

[0007] The auxiliary structure mainly includes a brake pad retaining spring, a ball and a caliper body sliding groove opened on the brake caliper body. The brake pad retaining spring is installed between the brake pad and the bracket in the brake caliper body. One end of the brake pad retaining spring is clamped with the brake pad, and the other end extends outward and only the ball is connected to the caliper body sliding groove opened on the side of the brake caliper body.

[0008] The ball is arranged between the sliding groove of the caliper body and the brake block retaining spring, and the brake block retaining spring is assembled on the bracket.

[0009] The auxiliary structure is located at the lower side of the brake caliper, and the auxiliary structure mainly includes a brake pad retaining spring pressure-bearing structure and a brake pad retaining spring ball rolling and sliding structure from bottom to top. The brake pad retaining spring ball rolling and sliding structure is mainly composed of balls and caliper body sliding grooves.

[0010] The utility model comprises a plurality of balls which are coaxially arranged in the sliding groove of the caliper body.

[0011] The radius dimension A of the sliding groove of the caliper body is not less than the radius dimension of the ball, the length dimension B is not less than the ball diameter multiplied by the number of balls, and the width dimension C is not less than the ball diameter dimension.

[0012] The end of the brake block retaining spring is provided with an outwardly extending lug as a ball rolling and sliding portion, the length dimension D of the ball rolling and sliding portion is not less than 6mm, and the width dimension E is not less than the ball radius.

[0013] The diameter of the balls is not less than 3 mm, and the number of the balls is one or more.

[0014] The auxiliary structure of the utility model applies the gravity generated by the housing assembly to the brake block retaining spring, reducing the pressure between the guide pin and the pin hole. The brake block retaining spring plays a buffering role, which is beneficial to reducing the bumping and knocking noise of the brake caliper. At the same time, through the ball, the sliding friction of the original guide pin is converted into the rolling friction of the ball, effectively reducing the sliding force of the housing assembly and reducing the drag torque of the brake caliper.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model, through the design of the auxiliary structure, ensures normal working conditions. The brake caliper auxiliary structure applies the gravity generated by the housing assembly to the brake block retaining spring, greatly reducing the pressure between the guide pin and the pin hole in the brake caliper sliding structure. The brake block retaining spring buffering effect reduces the bumps and abnormal noises. At the same time, the sliding friction force of the original design is converted into rolling friction force through the ball bearing, effectively reducing the sliding force of the housing assembly, thereby reducing the drag torque of the brake caliper. Therefore, the utility model reduces the movement resistance of the housing assembly, reduces the drag torque of the brake caliper, and thus reduces the energy consumption and carbon emissions of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an isometric stereoscopic view of the auxiliary structure of the utility model;

[0018] Figure 2 It is a partial cross-sectional view of the auxiliary structure of the utility model at the vehicle installation angle;

[0019] Figure 3 This is a front view of the brake block retaining spring of the utility model;

[0020] Figure 4 This is a left view of the brake block retaining spring of the utility model;

[0021] Figure 5 This is a front view of the sliding groove of the clamp body of the utility model;

[0022] Figure 6 It is an isometric stereoscopic view of the housing assembly of the utility model.

[0023] In the figure: 1. brake block retaining spring, 2. ball, 3. caliper body sliding groove, 4. bracket, 5. brake block retaining spring ball rolling sliding structure, 6. brake block retaining spring pressure bearing structure, 7. housing assembly. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods:

[0025] like Figure 1 and Figure 4 As shown, the auxiliary structure mainly includes a brake pad retaining spring 1, a ball 2 and a caliper body sliding groove 3 opened on the brake caliper body. The brake pad retaining spring 1 is installed between the brake pad and the bracket 4 in the brake caliper body. One end of the brake pad retaining spring 1 is clamped with the brake pad, and the other end is extended outward and only the ball 2 is connected to the caliper body sliding groove 3 opened on the side of the brake caliper body. The ball 2 and the caliper body sliding groove 3 constitute a brake pad retaining spring ball rolling sliding structure 5.

[0026] The ball 2 is arranged between the caliper body sliding groove 3 and the brake block retaining spring 1, and the brake block retaining spring 1 is assembled on the bracket 4.

[0027] like Figure 2 and Figure 6 As shown, compared with ordinary brake block retaining springs, the brake block retaining spring 1 of the present invention is further provided with a brake block retaining spring pressure-bearing structure 6 for supporting the gravity of the housing assembly 7 and a brake block retaining spring ball rolling and sliding structure 5 .

[0028] Under the vehicle installation angle of the brake caliper, in specific implementation, the auxiliary structure is located below the lower side of the brake caliper, that is, it is arranged only on the lower side of the brake caliper, and the auxiliary structure mainly includes a brake pad retaining spring pressure-bearing structure 6 and a brake pad retaining spring ball rolling and sliding structure 5 from bottom to top. The brake pad retaining spring ball rolling and sliding structure 5 is mainly composed of balls 2 and caliper sliding grooves 3.

[0029] like Figure 1 and Figure 2As shown, the ball 2 is assembled between the brake block retaining spring 1 and the caliper body sliding groove 3 of the brake block retaining spring ball rolling sliding structure 5, so that the ball 2 and the brake block retaining spring 1 have an interference fit. In a specific implementation, the interference between the ball 2 and the brake block retaining spring 1 can be 1.5mm.

[0030] The caliper comprises a plurality of balls 2 which are coaxially arranged in a sliding groove 3 of the caliper body.

[0031] like Figure 2 and Figure 5 As shown, the radius dimension A of the caliper sliding groove 3 is not less than the radius dimension of the ball 2 , the length dimension B is not less than the diameter of the ball 2 multiplied by the number of balls, and the width dimension C is not less than the diameter dimension of the ball 2 .

[0032] In a specific implementation, the radius A of the caliper sliding groove 3 is larger than the radius of the ball 2, the number of balls is 2, the length B is larger than 2 times the ball diameter, and the width C is larger than the ball diameter.

[0033] like Figure 3 and Figure 4 As shown, the end of the brake block retaining spring 1 is provided with an outwardly extending lug as a ball rolling and sliding portion, the length dimension D of the ball rolling and sliding portion is not less than 6 mm, and the width E dimension is not less than the radius of the ball 2.

[0034] In a specific implementation, the length dimension D of the ball rolling and sliding structure of the brake block retaining spring 1 is not less than 6 mm, and the width dimension E is greater than the ball radius.

[0035] like Figure 1 and Figure 2 As shown, the diameter of the ball 2 is not less than 3 mm, and the number is one or more.

[0036] In a specific embodiment, at the assembly angle of the whole vehicle, the auxiliary structure is located at the lower position, the number of balls is 2, the ball diameter is 3.5 mm, the radius dimension A of the caliper sliding groove is 2.5 mm, the length dimension B is 11 mm, the width dimension C is 4.3 mm, the length dimension D of the ball rolling sliding structure is 16 mm, and the width dimension E of the ball rolling sliding structure is 3 mm.

[0037] The auxiliary structure of this embodiment uses the gravity generated by the housing assembly to act on the brake block retaining spring, greatly reducing the pressure between the guide pin and the pin hole in the brake caliper sliding structure, and reducing the bumps and abnormal noises through the buffering effect of the brake block retaining spring. At the same time, the sliding friction force of the original design is converted into rolling friction force through the ball, effectively reducing the sliding force of the housing assembly, thereby reducing the drag torque of the brake caliper.

Claims

1. An auxiliary structure for reducing brake caliper noise, characterized in that: The auxiliary structure mainly comprises a brake block retaining spring (1), a ball (2) and a caliper body sliding groove (3) provided on a brake caliper body. The brake block retaining spring (1) is installed between a brake block and a bracket (4) in the brake caliper body. One end of the brake block retaining spring (1) is clamped with the brake block, and the other end is extended outward so that only the ball (2) is connected to the caliper body sliding groove (3) provided on the side of the brake caliper body.

2. The auxiliary structure for reducing brake caliper noise according to claim 1, characterized in that: The ball (2) is arranged between the caliper body sliding groove (3) and the brake block retaining spring (1), and the brake block retaining spring (1) is assembled on the bracket (4).

3. The auxiliary structure for reducing brake caliper noise according to claim 1, characterized in that: The auxiliary structure is located at the lower side of the brake caliper, and the auxiliary structure mainly comprises, from bottom to top, a brake block retaining spring pressure-bearing structure (6) and a brake block retaining spring ball rolling and sliding structure (5), and the brake block retaining spring ball rolling and sliding structure (5) is mainly composed of a ball (2) and a caliper body sliding groove (3).

4. The auxiliary structure for reducing brake caliper noise according to claim 1, characterized in that: It comprises a plurality of rolling balls (2), which are coaxially arranged in a sliding groove (3) of a caliper body.

5. The auxiliary structure for reducing brake caliper noise according to claim 1, characterized in that: The radius dimension A of the caliper body sliding groove (3) is not less than the radius dimension of the ball (2), the length dimension B is not less than the diameter of the ball (2) multiplied by the number of balls, and the width dimension C is not less than the diameter dimension of the ball (2).

6. The auxiliary structure for reducing brake caliper noise according to claim 1, characterized in that: The end of the brake block retaining spring (1) is provided with an outwardly extending lug as a ball rolling and sliding portion, the length dimension D of the ball rolling and sliding portion is not less than 6 mm, and the width dimension E is not less than the radius of the ball (2).

7. The auxiliary structure for reducing brake caliper noise according to claim 1, characterized in that: The diameter of the balls (2) is not less than 3 mm, and the number of the balls (2) is one or more.

Images