Structure for fixing clamp reed to prevent rotation and brake

Abstract

The utility model relates to the field of brake block return, and discloses a structure for fixing a caliper reed to prevent rotation and a brake, the structure comprises a pressure reed (1) which is transversely arranged and a return reed (2) which is arranged on the pressure reed (1), and two ends of the return reed (2) respectively support an inner brake block and an outer brake block; the return reed (2) and the beam reed (10) are connected and fixed through a connecting rivet (6), the return reed (2) and the beam reed (10) are provided with a connecting hole (7) for the rivet to penetrate through, the connecting hole (7) comprises a round hole part (8) arranged in the middle and further comprises a limiting part (9) diverging outwards from the edge part of the round hole part (8), and the aperture of the round hole part (8) is smaller than the outer diameter of the connecting rivet (6). And the connecting rivet (6) is partially extruded into the limiting part (9) in the process of being extruded and mounted in the round hole part (8). The return reed has the advantages of stable and reliable structure, stable return and the like.

Description

Technical Field

[0001] The utility model relates to the field of brake block return of a brake, in particular to a structure and a brake for fixing a clamp spring piece to prevent rotation. Background Art

[0002] The caliper in the disc brake achieves braking by bringing the brake pad inside the friction pad close to the brake disc and rubbing against the brake disc. After braking, the brake pad is driven away from the brake disc by the spring. Application number CN202221563227.3 is a spring structure and caliper for returning the friction pad of a disc brake.

[0003] The fixed caliper spring leaf assemblies are fastened by rivets, but the spring leaves are easy to rotate around the rivet holes, and relative rotation occurs between the assemblies. In severe cases, the compression spring leaf separates from the support surface of the brake pad back plate, and the imbalance between the clamping force and the active return force of the brake pad causes the friction inner diameter end of the brake pad to cling to the brake disc, resulting in increased caliper drag and early radial wear of the brake pad, affecting the braking performance. Utility Model Content

[0004] The utility model aims at the shortcomings of the prior art and provides a structure and a brake for fixing a clamp spring piece to prevent rotation.

[0005] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0006] A structure for fixing a clamp spring piece to prevent rotation, comprising a transversely arranged compression spring piece and a return spring piece arranged on the compression spring piece, wherein the two ends of the return spring piece respectively support an inner brake block and an outer brake block; the return spring piece and the beam spring piece are connected and fixed by connecting rivets, and connecting holes for the rivets to pass through are arranged on the return spring piece and the beam spring piece, wherein the connecting hole comprises a circular hole portion arranged in the middle, and the connecting hole also comprises a limiting portion diverging outward from the edge of the circular hole portion, wherein the aperture of the circular hole portion is smaller than the outer diameter of the connecting rivet, and the connecting rivet is partially squeezed into the limiting portion during the process of being extruded and installed in the circular hole portion.

[0007] Preferably, the diameter of the circumscribed circle of the limiting portion is 0.6 to 1 mm larger than the diameter of the circular hole.

[0008] Preferably, the cross section of the limiting portion is fan-shaped.

[0009] Preferably, the interface of the limiting portion is a triangle.

[0010] Preferably, the difference from the above-mentioned structure for fixing the clamp spring to prevent rotation is that the cross-section of the connecting hole is square, and the outer diameter of the connecting rivet is greater than the width of the connecting hole.

[0011] Preferably, it also includes an axially arranged beam spring sheet, the beam spring sheet and the compression spring sheet are connected and fixed by installing rivets, the mounting holes of the beam spring sheet and the compression spring sheet for installing the rivets have the same structure as the connecting holes, the beam spring sheet and the compression spring sheet are connected to each other in a "cross" shape, and the number of the return spring sheets is two and they are respectively located on the left and right sides of the beam spring sheet.

[0012] A brake is equipped with the above-mentioned structure for fixing the clamp spring to prevent rotation.

[0013] The utility model adopts the above technical solution, and has the following significant technical effects:

[0014] The utility model adjusts the shape of the original riveted circular hole, and fills the shape by extruding and deforming the rivet during riveting, thereby limiting the rotation of the spring around the rivet hole, thereby achieving the purpose of limiting and fixing the position. Without changing the existing production process and technology, without increasing the weight and cost, the design requirements of product anti-rotation are met. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the device.

[0016] Figure 2 It is a schematic diagram of the overall structure of the device.

[0017] Figure 3 yes Figure 2 sectional view of .

[0018] The technical names of the reference numerals in the figure are: 1-compression spring sheet, 2-return spring sheet, 6-connecting rivet, 7-connecting hole, 8-circular hole part, 9-limiting part, 10-beam spring sheet, 11-installing rivet. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] Example 1

[0021] A structure 2 for fixing a clamp spring piece to prevent rotation, comprising a transversely arranged compression spring piece 1, and a return spring piece 2 arranged on the compression spring piece 1, the two ends of the return spring piece 2 respectively supporting an inner brake block and an outer brake block; the return spring piece 2 and the beam spring piece 10 are connected and fixed by a connecting rivet 6, and a connecting hole 7 for the rivet to pass through is arranged on the return spring piece 2 and the beam spring piece 10, and the connecting hole 7 comprises a circular hole portion 8 arranged in the middle, and the connecting hole 7 also comprises a limiting portion 9 diverging from the edge of the circular hole portion 8 to the outside, and the aperture of the circular hole portion 8 is smaller than the outer diameter of the connecting rivet 6, and the connecting rivet 6 is partially squeezed into the limiting portion 9 during the process of being extruded and installed in the circular hole portion 8. In this scheme, the structural design of the connecting hole 7 ensures that the connection and fixation between the spring pieces are reliable. Secondly, in this solution, the main part of the connecting hole 7 can still be adapted to the rivet, and there is no need to develop the rivet separately. The rivet will expand during the riveting process, so the rivet will expand along the edge of the circular hole 8 to the limiting part 9, thereby limiting the freedom of the rivet's rotation direction.

[0022] In this embodiment, the diameter of the circumscribed circle of the position-limiting portion 9 is 0.6-1 mm larger than the diameter of the circular hole portion 8. There are four position-limiting portions 9, which are evenly arranged along the circumference of the circular hole portion 8.

[0023] In this embodiment, the cross section of the limiting portion 9 is fan-shaped. The fan-shaped structure is convenient for punching processing.

[0024] The invention also includes an axially arranged beam spring 10, which is connected and fixed to the compression spring 1 by installing a rivet 11. The mounting holes of the beam spring 10 and the compression spring 1 for installing the rivet 11 have the same structure as the connecting hole 7. The beam spring 10 and the compression spring 1 are connected to each other in a "cross" shape. The number of the return springs 2 is two and they are respectively located on the left and right sides of the beam spring 10.

[0025] Example 2

[0026] The difference between this embodiment and embodiment 1 is that, as a preference, the interface of the limiting portion 9 is a triangle.

[0027] Example 3

[0028] The difference between this embodiment and embodiment 1 is that the cross section of the connecting hole 7 is square, and the outer diameter of the connecting rivet 6 is greater than the width of the connecting hole 7. Under this structural condition, the rivet will expand along the connecting hole 7 during the riveting process, so that the rivet column after riveting is square, thereby avoiding relative rotation between the spring leaves.

[0029] Example 4

[0030] The brake is equipped with the above-mentioned structure 2 for fixing the clamp spring to prevent rotation.

Claims

1. A structure for fixing a clamp spring to prevent rotation, characterized in that: The invention comprises a compression spring sheet (1) arranged transversely, and a return spring sheet (2) arranged on the compression spring sheet (1), wherein the two ends of the return spring sheet (2) respectively support an inner brake block and an outer brake block; the return spring sheet (2) and the beam spring sheet (10) are connected and fixed by a connecting rivet (6); the return spring sheet (2) and the beam spring sheet (10) are provided with a connecting hole (7) for the rivet to pass through; the connecting hole (7) comprises a circular hole portion (8) arranged in the middle; the connecting hole (7) further comprises a limiting portion (9) diverging from the edge of the circular hole portion (8) to the outside; the hole diameter of the circular hole portion (8) is smaller than the outer diameter of the connecting rivet (6); and the connecting rivet (6) is partially squeezed into the limiting portion (9) during the process of being squeezed and installed in the circular hole portion (8).

2. A structure for fixing a pliers spring to prevent rotation according to claim 1, characterized in that: The diameter of the circumscribed circle of the limiting portion (9) is 0.6 to 1 mm larger than the diameter of the circular hole portion (8).

3. A structure for fixing a pliers spring to prevent rotation according to claim 2, characterized in that: The cross section of the limiting portion (9) is fan-shaped.

4. The structure for fixing a pliers spring to prevent rotation according to claim 1, characterized in that: The interface of the limiting portion (9) is a triangle.

5. The structure for fixing a pliers spring to prevent rotation according to claim 1, characterized in that: The difference between the structure for fixing the clamp spring to prevent rotation as described in claim 1 is that the cross section of the connecting hole (7) is square and the outer diameter of the connecting rivet (6) is larger than the width of the connecting hole (7).

6. The structure for fixing a pliers spring to prevent rotation according to claim 3, characterized in that: It also includes an axially arranged beam spring (10), the beam spring (10) and the compression spring (1) are connected and fixed by installing a rivet (11), the mounting holes of the beam spring (10) and the compression spring (1) for installing the rivet (11) have the same structure as the connecting hole (7), the beam spring (10) and the compression spring (1) are connected to each other in a "cross" shape, and the number of the return springs (2) is two and they are respectively located on the left and right sides of the beam spring (10).

7. Brake, characterized in that: Equipped with a structure for fixing a pliers spring to prevent rotation as described in claim 1 or 2 or 3 or 4 or 5 or 6.

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