Light reset device

Abstract

The utility model relates to the field of brake friction plate return, and discloses a light reset device, the other end of a supporting part is connected with a mounting part, and the free end of a stress part extends into a guide groove; the supporting part comprises a supporting opening formed by bending reeds, a first reed is arranged on one side of the supporting opening, a second reed is arranged on the other side of the supporting opening, one end of the first reed is bent to form an arc-shaped transition piece, the arc-shaped transition piece is connected with the end, close to the brake disc, of the installation part, and a first hole is formed in the arc-shaped transition piece. The deformation part is formed by bending a reed, the reed is bent to define a deformation opening, a second hole is formed in the deformation part, one end of the deformation part is in arc transition connection with the reed II, and the other end of the deformation part is in arc transition connection with the stress part; one end of the stress part is in arc transition connection with the deformation part, and the other end is a free end extending into the guide groove for supporting the friction block. The return mechanism has the advantages of reliable return, long service life, light weight and the like.

Description

Technical Field

[0001] The utility model relates to the field of brakes, in particular to a light resetting device. Background Art

[0002] The applicant previously applied for 202123276809.1-A low-drag and high-stability brake pad and brake pad return mechanism, and designed a low-drag and high-stability brake pad. The applicant creatively designed a guide ear structure. The arc surface structure of the guide ear can make the contact point always at the same horizontal height as the plane where the center of gravity of the brake pad body is located. Therefore, the return process is faster and there is no drag phenomenon. The brake pad is more stable, ensuring that the contact surface of the brake pad is larger each time, ensuring a larger braking area.

[0003] However, this type of solid structure spring leaf will have a stress concentration problem during the bending process, and is heavy, and is prone to insufficient return force or even failure to return in the later stages of the wear process. Utility Model Content

[0004] The utility model aims at the shortcomings of the prior art and provides a light resetting device.

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

[0006] A light reset device, the reset device is a reed structure, including a mounting portion and a supporting portion;

[0007] A mounting portion, used for mounting on the caliper body and the bracket, the mounting portion being provided with a guide groove for placing the friction block;

[0008] The elastic return part is used to support the friction block and provide a return force after the friction block is braked;

[0009] The elastic return portion includes a supporting portion, a deforming portion and a force-bearing portion connected in sequence, wherein the supporting portion, the deforming portion and the force-bearing portion are an integrated structure formed by bending a spring leaf; the other end of the supporting portion is connected to the mounting portion, and the free end of the force-bearing portion extends into the guide groove; the supporting portion includes a supporting opening formed by bending the spring leaf, one side of the supporting opening is a spring leaf 1, and the other side is a spring leaf 2, one end of the spring leaf 1 is bent to form an arc-shaped transition piece, the arc-shaped transition piece is connected to one end of the mounting portion close to the brake disc, and a first hole is formed on the arc-shaped transition piece;

[0010] The deformation part is formed by bending the spring sheet and the spring sheet is bent to form a deformation opening. A second hole is provided on the deformation part. One end of the deformation part is transitionally connected to the second arc of the spring sheet, and the other end is transitionally connected to the arc of the force-bearing part.

[0011] One end of the force-bearing part is connected with the deformation part in an arc transition, and the other end is a free end which penetrates into the guide groove to support the friction block.

[0012] Preferably, the deformation part includes a C-shaped transition piece connected to the force-bearing part and a third spring piece connected to the second spring piece; the third spring piece is an arc-shaped spring piece as a whole, one end of the third spring piece is connected to the C-shaped transition piece in a circular arc transition, and the other end is connected to the second spring piece in a circular arc transition, and the C-shaped transition piece is concave toward the middle of the deformation mouth.

[0013] Preferably, part of the C-shaped transition piece is opposite to the support opening, and the direction of the deformation opening, the direction of the support opening, and the direction of the opening formed by the arc-shaped transition piece and the force-bearing part intersect at one point.

[0014] Preferably, the guide groove is formed by side panel one, side panel two and side panel three, side panel one and side panel two are arranged in parallel, and the arc-shaped transition panel is connected to the end of side panel one or side panel two away from the brake disc; spring panel one and spring panel two are arranged in parallel, and in the initial assembly state, spring panel one and spring panel two are parallel to the brake disc.

[0015] Preferably, the side piece 1 or the side piece 2 connected to the force-bearing portion and the arc-shaped transition piece forms a bell mouth, and the size of the bell mouth gradually increases toward the end close to the brake disc.

[0016] Preferably, when projected along the length direction of the guide groove, the projection of the deformation portion is located within the projection of the guide groove; the planes where the bending trajectory of the support portion, the bending trajectory of the deformation portion and the bending trajectory of the force-bearing portion are located are parallel or overlapped.

[0017] Preferably, a plurality of second holes are provided on the deformation portion, at least one second hole is located on the C-shaped transition piece and is arranged along the bending trajectory of the C-shaped transition piece; at least two second holes are located on the third spring piece, at least one of the second holes located on the third spring piece extends to the connection between the C-shaped transition piece and the third spring piece, and at least one is located on the third spring piece portion opposite to the C-shaped transition piece, the first hole is arranged along the bending trajectory of the arc-shaped transition piece, the second hole arranged on the C-shaped transition piece is arranged along the bending trajectory of the C-shaped transition piece, and the second hole arranged on the third spring piece is arranged along the bending trajectory of the third spring piece.

[0018] Preferably, the mounting portion and the first hole and the second hole are punched before the mounting portion is bent, and the first hole and the second hole are strip-shaped keyway holes.

[0019] Preferably, the mounting portion and the elastic return portion are integrally formed by bending an elastic spring sheet; the mounting portion includes a positioning portion arranged on one side of the guide groove and a support sheet located on the other side of the guide groove, the positioning portion is formed by bending the spring sheet to form a positioning groove, and the two ends of the positioning groove are formed by bending the side wall spring sheet of the positioning groove to form limit ends; the support sheet is arranged on one side of the guide groove close to the brake mounting point or the bracket mounting point.

[0020] Preferably, the support sheet is L-shaped, including sheet one formed by bending the side wall of the guide groove and sheet two formed by bending sheet one, the bending part between sheet one and sheet two is an arc transition, and the angle between sheet two and sheet one is a right angle or an acute angle.

[0021] The utility model adopts the above technical solution, and has the following significant technical effects:

[0022] The utility model designs a light reset device, which has the advantages of light weight, being able to remove bending stress during the bending process, being convenient for bending, being easy to install, and having stable return, and being able to provide reliable return force within the full cycle of the friction plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the device.

[0024] Figure 2 It is a schematic diagram of the overall structure of the device.

[0025] Figure 3 It is a schematic diagram of the overall structure of the device.

[0026] Figure 4 It is a schematic diagram of the overall structure of the device.

[0027] The technical names of the accompanying drawings are: 1-installation part, 2-elastic return part, 3-support part, 4-deformation part, 5-force-bearing part, 6-guide groove, 7-support opening, 8-spring leaf 1, 10-spring leaf 2, 11-arc-shaped transition piece, 12-first hole, 13-deformation opening, 14-second hole, 15-C-shaped transition piece, 16-third spring leaf, 17-side piece 1, 18-side piece 2, 19-side piece 3, 20-positioning part, 21-positioning groove, 22-limiting end, 23-support piece, 24-piece 1, 25-piece 2, 26-bayonet. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] Example 1

[0030] A light reset device, the reset device is a spring structure, comprising a mounting portion 1 and a supporting portion 3;

[0031] The mounting portion 1 is used for mounting on the caliper body and the bracket. The mounting portion 1 is provided with a guide groove 6 for placing the friction block. The guide groove 6 is also formed by bending the spring sheet. When installing, the guide groove 6 is installed in the mounting groove provided on the caliper body or the bracket.

[0032] The elastic return part 2 is used to support the friction block and provide a return force for the friction block after braking; during the braking process, the friction plate drives the elastic return part 2 to deform and accumulate elastic potential energy. After braking, the elastic return part 2 releases the elastic potential energy to achieve automatic return.

[0033] The elastic return portion 2 includes a supporting portion 3, a deforming portion 4 and a force-bearing portion 5 which are connected in sequence. The supporting portion 3, the deforming portion 4 and the force-bearing portion 5 are an integrated structure formed by bending a spring leaf; the other end of the supporting portion 3 is connected to the mounting portion 1, and the free end of the force-bearing portion 5 extends into the guide groove 6; the supporting portion 3 includes a supporting opening 7 formed by bending the spring leaf, one side of the supporting opening 7 is a spring leaf 8, and the other side is a spring leaf 2 10, one end of the spring leaf 1 8 is bent to form an arc-shaped transition piece 11, the arc-shaped transition piece 11 is connected to one end of the mounting portion 1 close to the brake disc, and a first hole 12 is formed on the arc-shaped transition piece 11; the central angle of the arc-shaped transition piece 11 is approximately 90°, and the spring leaf 1 8 and the spring leaf 2 10 are designed to be approximately the same length.

[0034] The deformation part 4 is formed by bending a spring sheet and the bending of the spring sheet forms a deformation opening 13. The deformation part 4 is provided with second holes 14. In this embodiment, the number of the second holes 14 is three.

[0035] One end of the deformation part 4 is connected to the spring leaf 2 10 by an arc transition, the arc transition angle is greater than 90°, and the other end is connected to the force-bearing part 5 by an arc transition;

[0036] One end of the force-bearing part 5 is connected with the deformation part 4 in an arc transition, and the other end is a free end that penetrates into the guide groove 6 for supporting the friction block. In this solution, the mounting part 1 and the elastic return part 2 are formed by bending the spring leaf in one piece. In order to reduce the stress of the bending, the spring leaf is provided with a first hole 12 or a second hole 14 at the bending part. The force-bearing part 5 is a straight spring leaf, and the free end of the straight spring leaf is a bayonet 26 formed by bending. The bayonet 26 is used to be clamped on the side of the friction plate close to the brake disc. In this embodiment, the angle between the straight spring leaf and the side wall of the guide groove 6 is an acute angle.

[0037] In this embodiment, the deformation part 4 includes a C-shaped transition piece 15 connected to the force-bearing part 5 and a third spring piece 16 connected to the second spring piece; the third spring piece 16 is an arc-shaped spring piece as a whole, one end of the third spring piece 16 is connected to the C-shaped transition piece 15 in an arc transition, and the other end is connected to the second spring piece in an arc transition, and the C-shaped transition piece 15 is concave toward the middle of the deformation opening 13. The connection transition point between the third spring piece 16 and the second spring piece and the connection transition point between the C-shaped transition piece 15 and the third spring piece 16 are basically at the same height, and the C-shaped transition piece 15 is concave toward the middle of the deformation opening 13, which is not the center of the deformation opening 13, but only defines the approximate concave direction of the C-shaped transition piece 15. The deformation opening 13 is surrounded by the C-shaped transition piece 15 and the third spring piece 16, and the shape of the C-shaped transition piece 15 is roughly similar to the shape of the thumb from the side view, which is a shape with one end narrow and the other end large.

[0038] In this embodiment, part of the C-shaped transition piece 15 is directly opposite to the support opening 7, and the orientation of the deformation opening 13, the orientation of the support opening 7, and the orientation of the opening formed by the arc-shaped transition piece 11 and the force-bearing part 5 intersect at one point. This structural design can reduce the space occupied by the support part 3 and the deformation part 4 as much as possible, and can provide sufficient margin for the force-bearing part 5 to penetrate into the guide groove 6. At the same time, the deformation part 4 composed of the third spring piece 16 and the C-shaped transition piece 15 can provide at least two bending force points when deformed by force, dispersing the deformation stress at a single position, thereby increasing its service life. In addition, since the second hole 14 is provided at the stress-bending position, the stress concentration at this position is relatively small during molding, further extending the service life.

[0039] The guide groove 6 is formed by the side piece 17, the side piece 2 18 and the side piece 3 19. The side piece 17 and the side piece 2 18 are arranged in parallel. The arc-shaped transition piece 11 is connected to the end of the side piece 17 or the side piece 2 18 away from the brake disc. The spring piece 1 8 and the spring piece 2 10 are arranged in parallel. In the initial assembly, the spring piece 1 8 and the spring piece 2 10 are parallel to the brake disc. In this embodiment, the side piece 17, the side piece 2 18 and the side piece 3 19 are all springs. In this embodiment, the arc-shaped transition piece 11 is connected to the end of the side piece 17 away from the brake disc. The side piece 17 is located on the side of the guide groove 6 close to the jaws. The bending sequence of the entire elastic return portion 2 is to start from the force-bearing portion 5 of the side plate 17 and bend toward the jaw side to form the supporting portion 3, then bend toward the side away from the brake disc and move toward the center of the brake disc to form the third spring leaf 16, the third spring leaf 16 bends toward the inner side of the deformation opening 13 and moves toward the supporting opening 7 to form a C-shaped transition piece 15, the C-shaped transition is bent toward the guide groove 6 to form the force-bearing portion 5, the force-bearing portion 5 is a straight spring strip, and the free end of the force-bearing portion 5 is bent to form a bayonet 26 to limit the friction plate.

[0040] The force-bearing part 5 and the side piece 17 or the side piece 2 18 connected to the arc-shaped transition piece 11 form a bell mouth, and the size of the bell mouth gradually increases toward the end close to the brake disc. The force-bearing part 5 is inclined to increase the limiting force on the spring leaf, and at the same time, it can be limited to the position close to the center of the friction plate as much as possible, which can provide a margin for the wear and movement of the brake plate in the later stage, and ensure that a reliable return force is provided for the friction plate throughout its life cycle.

[0041] As described above, the deformation part 4 is provided with a plurality of second holes 14, at least one of which is located on the C-shaped transition piece 15 and is arranged along the curved track of the C-shaped transition piece 15; at least two second holes 14 are located on the third spring piece 16, at least one of the second holes 14 located on the third spring piece 16 extends to the connection between the C-shaped transition piece 15 and the third spring piece 16, and at least one is located on the part of the third spring piece 16 opposite to the C-shaped transition piece 15, the first hole 12 is arranged along the curved track of the arc-shaped transition piece 11, the second hole 14 arranged on the C-shaped transition piece 15 is arranged along the curved track of the C-shaped transition piece 15, and the second hole 14 arranged on the third spring piece 16 is arranged along the curved track of the third spring piece 16. Specifically, there are three holes in this embodiment.

[0042] In order to avoid stress concentration during the bending process, the mounting portion 1 and the first hole 12 and the second hole 14 are punched before the mounting portion 1 is bent, and the first hole 12 and the second hole 14 are strip-shaped keyway holes.

[0043] The mounting portion 1 and the elastic return portion 2 are integrally formed by bending an elastic spring sheet; the mounting portion 1 includes a positioning portion 20 arranged on one side of the guide groove 6 and a support sheet 23 located on the other side of the guide groove 6, the positioning portion 20 is formed into a positioning groove 21 by bending the spring sheet, and the two ends of the positioning groove 21 are formed into limit ends 22 by bending the side wall spring sheet of the positioning groove 21; the support sheet 23 is arranged on one side of the guide groove 6 close to the brake mounting point or the bracket mounting point. This design can reduce the distance from the fixing point to the supporting point, and under the same force strength requirements, this design can use a lighter bracket.

[0044] The support sheet 23 is L-shaped, including a sheet 1 24 formed by bending the side wall of the guide groove 6, i.e., a side sheet 1, and a sheet 25 formed by bending the sheet 1 24. The bending part between the sheet 1 24 and the sheet 2 25 is an arc transition, and the angle between the sheet 25 and the sheet 1 24 is a right angle or an acute angle. This structural design can ensure that the limiting part of the friction plate is closely matched with the spring sheet.

[0045] During braking, the piston and the caliper body drive the friction plate to move toward the brake disc, and the friction plate will drive the force-bearing part 5 to move. The force-bearing part 5 pulls the C-shaped transition plate 15 to deform and accumulate elastic potential energy, and at the same time drives the spring plate to deform in three directions of the brake disc. When the deformation force is large, a part of it will fall into the support part 3 and store force by the support part 3. This situation generally occurs in the later stage of the life cycle of the friction plate; when the brake is withdrawn, the device can drive the friction plate to return to its original position, thereby ensuring that the friction plate can provide a return force throughout its entire life cycle, and the concave C-shaped transition plate 15 can provide a larger deformation amount, thereby increasing its service life.

[0046] Example 2

[0047] The difference from Example 1 is that: the projection of the deformation part 4 is located inside the projection of the guide groove 6 along the length direction of the guide groove 6; the planes where the bending trajectory of the support part 3, the bending trajectory of the deformation part 4 and the bending trajectory of the force-bearing part 5 are located are parallel or coincident. This type of bending is to indicate that the entire spring leaf is bent on one plane during the bending process, and no twisting deformation is involved.

[0048] Example 3

[0049] The difference between this embodiment and the first embodiment is that in the initial state, the bayonet 26 formed at the free end of the force-bearing portion 5 is an L-shaped bayonet 26 facing the brake disc.

Claims

1. A lightweight resetting device, characterized in that: The reset device is a leaf spring structure, comprising a mounting portion (1) and a supporting portion (3); A mounting portion (1) for mounting on the caliper body and the bracket, the mounting portion (1) being provided with a guide groove (6) for placing a friction block; The elastic return portion (2) is used to support the friction block and provide a return force for the friction block after braking; The elastic return portion (2) comprises a supporting portion (3), a deforming portion (4) and a force-bearing portion (5) which are connected in sequence, wherein the supporting portion (3), the deforming portion (4) and the force-bearing portion (5) are an integrated structure formed by bending a spring leaf; the other end of the supporting portion (3) is connected to the mounting portion (1), and the free end of the force-bearing portion (5) extends into the guide groove (6); the supporting portion (3) comprises a supporting opening (7) formed by bending the spring leaf, one side of the supporting opening (7) is a spring leaf 1 (8), and the other side is a spring leaf 2 (10), one end of the spring leaf 1 (8) is bent to form an arc-shaped transition piece (11), the arc-shaped transition piece (11) is connected to one end of the mounting portion (1) close to the brake disc, and a first hole (12) is formed on the arc-shaped transition piece (11); The deformation part (4) is formed by bending a spring sheet and the spring sheet is bent to form a deformation opening (13). A second hole (14) is provided on the deformation part (4). One end of the deformation part (4) is connected to the second spring sheet (10) in an arc transition, and the other end is connected to the force-bearing part (5) in an arc transition. One end of the force-bearing part (5) is connected to the deformation part (4) in an arc transition, and the other end is a free end that penetrates into the guide groove (6) to support the friction block.

2. A lightweight resetting device according to claim 1, characterized in that: The deformation portion (4) comprises a C-shaped transition piece (15) connected to the force-bearing portion (5) and a third spring piece (16) connected to the second spring piece; the third spring piece (16) is an arc-shaped spring piece as a whole, one end of the third spring piece (16) is connected to the C-shaped transition piece (15) in an arc transition manner, and the other end is connected to the second spring piece in an arc transition manner, and the C-shaped transition piece (15) is concave toward the middle of the deformation opening (13).

3. A lightweight resetting device according to claim 1, characterized in that: Part of the C-shaped transition piece (15) is directly opposite to the support opening (7), and the opening direction of the deformation opening (13), the opening direction of the support opening (7), and the opening direction formed by the arc-shaped transition piece (11) and the force-bearing part (5) intersect at one point.

4. A lightweight resetting device according to claim 1, 2 or 3, characterized in that: The guide groove (6) is formed by surrounding the side piece 1 (17), the side piece 2 (18) and the side piece 3 (19); the side piece 1 (17) and the side piece 2 (18) are arranged in parallel; the arc-shaped transition piece (11) is connected to the end of the side piece 1 (17) or the side piece 2 (18) away from the brake disc; the spring piece 1 (8) and the spring piece 2 (10) are arranged in parallel; in the initial assembly state, the spring piece 1 (8) and the spring piece 2 (10) are parallel to the brake disc.

5. A lightweight resetting device according to claim 4, characterized in that: The side piece 1 (17) or the side piece 2 (18) connected to the force-bearing portion (5) and the arc-shaped transition piece (11) forms a bell mouth, and the size of the bell mouth gradually increases toward the end close to the brake disc.

6. A lightweight resetting device according to claim 1, 2 or 3, characterized in that: When projected along the length direction of the guide groove (6), the projection of the deformation portion (4) is located within the projection of the guide groove (6); the planes where the bending trajectory of the support portion (3), the bending trajectory of the deformation portion (4) and the bending trajectory of the force-bearing portion (5) are located are parallel or overlap.

7. A lightweight resetting device according to claim 2, characterized in that: A plurality of second holes (14) are arranged on the deformation portion (4), at least one of the second holes (14) is located on the C-shaped transition piece (15) and is arranged along the curved track of the C-shaped transition piece (15); at least two of the second holes (14) are located on the third spring piece (16), at least one of the second holes (14) located on the third spring piece (16) extends to the connection between the C-shaped transition piece (15) and the third spring piece (16), and at least one is located on the portion of the third spring piece (16) opposite to the C-shaped transition piece (15); the first hole (12) is arranged along the curved track of the arc-shaped transition piece (11), the second hole (14) arranged on the C-shaped transition piece (15) is arranged along the curved track of the C-shaped transition piece (15), and the second hole (14) arranged on the third spring piece (16) is arranged along the curved track of the third spring piece (16).

8. A lightweight resetting device according to claim 1, characterized in that: The mounting portion (1) and the first hole (12) and the second hole (14) are punched before the mounting portion (1) is bent, and the first hole (12) and the second hole (14) are strip-shaped keyway-shaped holes.

9. A lightweight resetting device according to claim 1, characterized in that: The mounting portion (1) and the elastic return portion (2) are integrally formed by bending an elastic spring sheet; the mounting portion (1) comprises a positioning portion (20) arranged on one side of the guide groove (6) and a support sheet (23) located on the other side of the guide groove (6); the positioning portion (20) is formed into a positioning groove (21) by bending the spring sheet, and the two ends of the positioning groove (21) are formed into limiting ends (22) by bending the side wall spring sheet of the positioning groove (21); and the support sheet (23) is arranged on one side of the guide groove (6) close to the brake mounting point or the bracket mounting point.

10. A lightweight resetting device according to claim 9, characterized in that: The support sheet (23) is L-shaped, and comprises a sheet 1 (24) formed by bending the side wall of the guide groove (6) and a sheet 2 (25) formed by bending the sheet 1 (24). The bending part between the sheet 1 (24) and the sheet 2 (25) is an arc transition, and the angle between the sheet 2 (25) and the sheet 1 (24) is a right angle or an acute angle.

Images