Return spring for disc brake

Abstract

The utility model relates to the field of brakes, and discloses a return spring for a disc brake, which comprises a mounting groove, the mounting groove comprises a first plate at the bottom, a second plate on the left side of the first plate and a third plate on the corresponding right side, the first plate, the second plate and the third plate define a U-shaped mounting groove, and the lower end of the mounting groove extends to form a return structure. The return structure comprises a supporting part, a first bending part, a second bending part and a limiting part, the supporting part is of a double-layer structure, the supporting part is of an opening structure, and a gap between the double-layer structure can be changed under the stress condition; the first bending part and the second bending part are in arc transition, the first bending part and the second bending part form a deformation opening, and the limiting part extends to the tail end of the second bending part. The reed cannot incline in the stress process, the brake block always keeps translation, local abrasion is reduced, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of brake, especially disc brake's return spring for disc brake. BACKGROUND

[0002] Chinese patent CN213478994U discloses a spring sheet for brake block return of brake, and the spring sheet structure provided by the application belongs to a structure formed by combining two spring sheets. However, the spring sheet structure has the characteristics of inclination and instability in deformation support, and the position of the brake is not easy to maintain. SUMMARY

[0003] The utility model provides disc brake's return spring for disc brake in prior art's shortcoming.

[0004] Disc brake's return spring, including installation groove, installation groove includes the first board of bottom, the second board of first board left side and the third board corresponding right side, first board, second board and third board enclose U-shaped installation groove, the lower end of installation groove extends return structure, return structure includes support part, first bending part, second bending part and limiting part, support part is double-layer structure, support part is open structure and the gap between double-layer structures will change under stress condition; First bending part and second bending part are circularly transitioned, first bending part and second bending part form deformation port, and the tail end of limiting part extends in second bending part.

[0005] Preferably, the spring sheet is an integral structure.

[0006] Preferably, the support part extends to the rear side of the first plate and is arranged perpendicularly to the first plate and the second plate; the double-layer structure of the support part is a double-plate structure, the first layer of the support part is bent to the rear side, and then the tail end of the first layer is reversely bent to form the second layer, the first layer and the second layer are arranged in parallel, there is a gap between the first layer and the second layer, and the front end of the second layer is bent to form the first bending part.

[0007] Preferably, the bending lines formed by the bending portions of the first layer and the second layer of the support part are oblique lines, and the bending lines form a certain angle with the first plate.

[0008] Preferably, the left side surface trajectory of the support part is arc-shaped, and the arc line of the left side surface trajectory of the support part extends from the lower end of the first plate to the right rear side.

[0009] Preferably, the second bending part is C-shaped, the tail end of the second bending part is arranged vertically upward and in parallel with the first plate, and there is a gap between the tail of the second bending part and the first plate.

[0010] As preferred, the limiting part comprises a vertical plate part and a clamping edge part of the end part, the limiting opening formed by the second bending part, and the connecting part of the first bending part and the second bending part is used as the supporting point of the stopper, one end of the stopper is limited by the limiting edge in the working state, and the other end is limited by the supporting point.

[0011] As preferred, the second plate is bent and extended to the left side to form a fixing groove, the fixing groove is a rectangular groove, the second plate protrudes a positioning protrusion on the side of the fixing groove, the opposite side of the second plate is a fourth plate, the fourth plate is provided with a positioning plate extending to the middle of the fixing groove, the positioning plate is an inclined plate, and the positioning plate extends and inclines from the fourth plate to the bottom of the fixing groove.

[0012] As preferred, the third plate extends a supporting plate to the right side, and the supporting plate is used to be attached to the product.

[0013] Compared with the prior art, the spring sheet structure has the advantages of convenient installation, accurate positioning, stable return during braking and return, and the like. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the device.

[0015] Figure 2 It is a schematic diagram of the structure of the spring sheet.

[0016] Figure 3 It is a schematic diagram of the structure of the spring sheet.

[0017] The technical names of the reference signs in the drawings are as follows: 1 - mounting groove, 2 - first plate, 3 - second plate, 4 - third plate, 5 - supporting part, 6 - first bending part, 7 - second bending part, 8 - limiting part, 9 - first layer, 10 - second layer, 11 - bending line, 12 - plate part, 13 - clamping edge part, 14 - limiting opening, 15 - fixing groove, 16 - positioning protrusion, 17 - fourth plate, 18 - positioning plate, 19 - supporting plate. DETAILED DESCRIPTION

[0018] The utility model will be described in further detail below in combination with the drawings and examples.

[0019] Example 1

[0020] The application discloses a return spring for a disc brake, which comprises a mounting groove 1, wherein the mounting groove 1 comprises a first plate 2 at the bottom, a second plate 3 at the left side of the first plate 2 and a third plate 4 at the corresponding right side, the first plate 2, the second plate 3 and the third plate 4 form a U-shaped mounting groove 1, a return structure is extended at the lower end of the mounting groove 1, the return structure comprises a supporting part 5, a first bending part 6, a second bending part 7 and a limiting part 8, the supporting part 5 is a double-layer structure, the supporting part 5 is an open structure, and the gap between the double-layer structure will change under stress; the first bending part 6 and the second bending part 7 are circularly arc transitioned, the first bending part 6 and the second bending part 7 form a deformation opening, and the limiting part 8 is extended at the tail end of the second bending part 7. The spring leaf in the embodiment is an integrated molding structure, has an elastic deformation capacity, and is made of metal.

[0021] In the scheme, the spring leaf is an integrated molding structure, that is, each structure of the spring leaf is realized by bending. The supporting part 5 is extended to the back side of the first plate 2 and is vertically arranged with the first plate 2 and the second plate 3; the double-layer structure of the supporting part 5 is a double-plate structure, the first layer 9 of the supporting part 5 is bent to the back side, and then the tail end of the first layer 9 is reversely bent to form the second layer 10, the first layer 9 and the second layer 10 are arranged in parallel, there is a gap between the first layer 9 and the second layer 10, and the front end of the second layer 10 is bent to form the first bending part 6. The first layer 9 and the second layer 10 are both plate structures, that is, they are extended and bent from the lower end of the first plate 2, the first layer 9 is first bent, then the second layer 10 is formed by second bending at a certain distance from the back end, the tail end of the second layer 10 is bent to form the first bending part 6, then the tail end of the first bending part 6 is bent to form the second bending part 7, the first bending part 6 is located at the lower side of the supporting part 5, and the slot opening formed by the bending of the first bending part 6 faces the upper side.

[0022] In the embodiment, the bending line 11 formed by the bending of the first layer 9 and the second layer 10 of the supporting part 5 is an oblique line, and the bending line 11 forms a certain angle with the first plate 2. The structure design can change the stress trajectory during the movement, thereby changing the deformation trend, and thus the stability and reliability of the brake block are ensured.

[0023] In the embodiment, the left side surface trajectory of the supporting part 5 is arc-shaped, and the arc line of the left side surface trajectory of the supporting part 5 extends from the lower end of the first plate 2 to the right back side. The second bending part 7 is a C-shaped bend, the tail end of the second bending part 7 is vertically upward and is arranged in parallel with the first plate 2, and there is a gap between the tail of the second bending part 7 and the first plate 2. The gap is used to stably deform the first bending part 6, the second bending part 7 and the supporting part 5 when they are deformed. The limiting part 8 comprises a vertical plate part 12 and a clamping edge part 13 at the end, a limiting opening 14 formed by the second bending part 7, and a connecting part of the first bending part 6 and the second bending part 7 as a supporting point of the brake block. In the working state, one end of the brake block is limited by the limiting edge, and the other end is limited by the supporting point.

[0024] The second plate 3 is bent to extend to the left side to form a fixing groove 15, the fixing groove 15 is a rectangular groove, the second plate 3 is provided with a positioning protrusion 16 on the side of the fixing groove 15, and the opposite side of the second plate 3 is a fourth plate 17, the fourth plate 17 is provided with a positioning plate 18 extending to the middle of the fixing groove 15, the positioning plate 18 is an inclined plate, and the positioning plate 18 extends and inclines from the fourth plate 17 to the bottom of the fixing groove 15. When assembling, the mounting part of the plier body is clamped in the fixing groove 15, so that the stability of the mounting is ensured.

[0025] In the scheme, the third plate 4 extends to the right side to form a supporting plate 19, and the supporting plate 19 is used to be attached to the product.

[0026] When the reed is installed, the reed is first fixed and installed on the plier body through the fixing groove 15, then the two ends of the brake block are installed in the mounting groove 1, and the second bending part 7 and the clamping edge part 13 are used for limiting and fixing.

[0027] Embodiment 2

[0028] The difference between the embodiment and the embodiment 1 is that the reed is an alloy copper reed.

[0029] Embodiment 3

[0030] The difference between the embodiment and the embodiment 1 is that the positioning plate 18 is formed by bending after a cutout is processed on the fourth plate 17.

Claims

1. Return spring for a disc brake, characterized in that: The installation groove (1) comprises a first plate (2) at the bottom, a second plate (3) on the left side of the first plate (2), and a third plate (4) on the corresponding right side, the first plate (2), the second plate (3) and the third plate (4) form a U-shaped installation groove (1), the lower end of the installation groove (1) extends a return structure, the return structure comprises a supporting part (5), a first bending part (6), a second bending part (7) and a limiting part (8), the supporting part (5) is a double-layer structure, the supporting part (5) is an open structure, the gap between the double-layer structure changes under stress; the first bending part (6) and the second bending part (7) are circularly transitioned, the first bending part (6) and the second bending part (7) form a deformation port, and the limiting part (8) extends at the tail end of the second bending part (7).

2. The return spring for a disc brake according to claim 1, characterized in that: The spring sheet is an integral molding structure.

3. The return spring for a disc brake according to claim 1, characterized in that: The supporting part (5) extends to the back side of the first plate (2) and is vertically arranged with the first plate (2) and the second plate (3); the double-layer structure of the supporting part (5) is a double-plate structure, the first layer (9) of the supporting part (5) is bent to the back side, and then the tail end of the first layer (9) is reversely bent to form the second layer (10), the first layer (9) and the second layer (10) are arranged in parallel, there is a gap between the first layer (9) and the second layer (10), and the front end of the second layer (10) is bent to form the first bending part (6).

4. The return spring for a disc brake according to claim 3, characterized in that: The bending line (11) formed at the bending part of the first layer (9) and the second layer (10) of the supporting part (5) is an oblique line, and the bending line (11) forms a certain angle with the first plate (2).

5. The return spring for a disc brake of claim 3, wherein: The left side surface track of the supporting part (5) is arc-shaped, and the arc line of the left side surface track of the supporting part (5) extends from the lower end of the first plate (2) to the right back side.

6. The return spring for a disc brake of claim 1, wherein: The second bending part (7) is a C-shaped bend, the tail end of the second bending part (7) is vertically upward and arranged in parallel with the first plate (2), and there is a gap between the tail of the second bending part (7) and the first plate (2).

7. The return spring for a disc brake of claim 6, wherein: The limiting part (8) comprises a vertical plate part (12) and a clamping edge part (13) at the end, a limiting port (14) formed by the second bending part (7), and a connecting part of the first bending part (6) and the second bending part (7) as a support point of the brake block, one end of the brake block is limited by the limiting edge in the working state, and the other end is limited by the support point.

8. The return spring for a disc brake of claim 1, wherein: The second plate (3) is bent and extended to the left side to form a fixing groove (15), the fixing groove (15) is a rectangular groove, the second plate (3) protrudes a positioning protrusion (16) on the side of the fixing groove (15), the opposite side of the second plate (3) is a fourth plate (17), the fourth plate (17) is provided with a positioning plate (18) extending to the middle of the fixing groove (15), the positioning plate (18) is an inclined plate, and the positioning plate (18) extends obliquely from the fourth plate (17) to the bottom of the fixing groove (15).

9. The return spring for a disc brake of claim 1, wherein: The third plate (4) extends to the right side and has a supporting plate (19), and the supporting plate (19) is used to be attached to the product.

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