Brake return mechanism

Abstract

The utility model relates to the field of brakes, and discloses a brake return mechanism which comprises a supporting body (21), a guide rod (6) and a return spring (7), one end of the guide rod (6) is used for being connected with a brake block (8), a supporting face is arranged on the guide rod (6), one end of the return spring (7) is supported on the supporting body (21), and the other end of the return spring (7) is supported on the supporting face. The supporting body (21) does not move in the braking and returning process. The return mechanism has the advantages of being stable in supporting, reliable in return, free of deformation and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of brake, especially a brake return mechanism. BACKGROUND

[0002] Chinese patent document CN212804007U discloses a return mechanism for air pressure disc brake, which realizes the return of the brake block through the form of screw and stacked spring. However, this design has the following shortcomings. First, the stacked spring structure is arranged externally, which has a short service life and needs a guide sleeve structure to realize guiding. More seriously, under this scheme, the screw and the bracket are fixedly connected, and there is no deformation amount between the two. The braking situation of a vehicle is very complex, and it is difficult to ensure that the braking forces of the brake block at all places are real-time the same. Moreover, vibration will occur. Under this condition, the screw is prone to deformation and jamming against the inner wall, and noise and delayed return will occur after deformation. SUMMARY

[0003] The utility model provides a brake return mechanism aiming at the shortcomings in the prior art.

[0004] To solve the above technical problems, the utility model solves them through the following technical schemes:

[0005] A brake return mechanism, comprising a support body, a guide rod and a return spring, one end of the guide rod being used to connect with a brake block, a support surface being arranged on the guide rod, one end of the return spring being supported on the support body, and the other end being supported on the support surface, the support body not moving during braking and return.

[0006] As a preferred embodiment, the brake return mechanism further comprises an elastic member, the elastic member being located at the end of the guide rod connected with the brake block, the elastic member and the guide rod being integrally formed or the elastic member and the guide rod being fixedly connected in a detachable manner; the elastic member comprises elastic claws, the elastic claws being located around the guide rod to limit relative displacement of the guide rod and the brake block.

[0007] As a preferred embodiment, gaps are formed between the elastic claws.

[0008] As a preferred embodiment, the number of elastic claws is multiple, and the elastic claws are arranged along the circumferential direction of the side surface of the guide rod, gaps being formed between the elastic claws.

[0009] As a preferred embodiment, the widths of the elastic claws are different or the widths of the elastic claws are not completely the same.

[0010] As a preferred embodiment, the elastic member and the guide rod are detachably connected, the guide rod is provided with an annular mounting groove on the outer side surface thereof, the elastic member comprises a mounting ring, the elastic claws are fixedly connected to the mounting ring, and the mounting ring is sleeved in the mounting groove and fixedly connected to the guide rod.

[0011] As preferred, the cross-sectional diameter of the side surface of the installation groove is smaller near the spring end and larger away from the spring end, the inner surface of the installation ring is matched with the shape of the side surface of the installation groove, and the installation ring is made into a non-closed ring structure by the deformation opening.

[0012] As preferred, the inner diameter of the installation ring is smaller than the outer diameter of the outer surface of the installation groove.

[0013] As preferred, the end of the guide rod away from the brake block is provided with an adjusting hole.

[0014] As preferred, the outer surface of the end of the guide rod connected with the brake block is provided with an external thread.

[0015] Compared with the prior art, the present application has the following beneficial effects: the return mechanism designed in the present application has a certain deflection, which can avoid screw deformation and jamming, and is very convenient for later maintenance, and all parts are installed inside, which can prolong the service life. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the device.

[0017] Figure 2 It is a top view. Figure 1

[0018] Figure 3 It is a schematic diagram of the structure of the return mechanism.

[0019] Figure 4 It is a schematic diagram of the structure of the guide rod.

[0020] Figure 5 It is a schematic diagram of the structure of the elastic member.

[0021] The technical names of the reference numerals in the drawings are: 6-guide rod, 7-return spring, 8-brake block, 9-elastic member, 10-elastic claw, 11-limiting part, 12-deformation opening, 13-gap, 14-installation groove, 15-installation ring, 16-deformation opening, 17-adjusting hole, 18-main rod part, 19-limiting ring. DETAILED DESCRIPTION

[0022] The present application will be further described in detail below in combination with the drawings and examples.

[0023] Example 1

[0024] ​The brake return mechanism comprises a support body, a guide rod 6 and a return spring 7, one end of the guide rod 6 is used for connecting with a brake block 8, a supporting surface is arranged on the guide rod 6, one end of the return spring 7 is supported on the support body, and the other end is supported on the supporting surface, and the support body does not move during braking and returning. The brake return mechanism is installed on a clamp body and connected with the brake block 8, the brake block 8 generally comprises a back plate and a friction plate installed on the back plate, the guide rod 6 is connected to the back plate, the back plate can drive the guide rod 6 to move synchronously, and the guide rod 6 can compress the return spring 7 when moving, and the return spring 7 can drive the guide rod 6 to return after the brake force is removed, so as to drive the brake block 8 to return.

[0025] The elastic member 9 is located at one end of the guide rod 6 connected with the brake block 8, and the elastic member 9 and the guide rod 6 are integrally formed or the elastic member 9 and the guide rod 6 are detachably fixedly connected; the elastic member 9 comprises elastic claws 10, and the elastic claws 10 are located around the guide rod 6 and are used for limiting relative displacement of the guide rod 6 and the brake block 8. In the embodiment, the elastic member 9 is a ring structure and is wrapped around the guide rod 6, and of course the elastic member 9 can be integrally formed with the guide rod 6. The elastic claws 10 are located around the guide rod 6 and extend outward, and a space for deformation is formed between the elastic claws 10 and the guide rod 6, and the space can absorb fluctuations caused by shaking and vibration of the brake block 8.

[0026] In the embodiment, gaps 13 are formed between the elastic claws 10, and the gaps 13 between adjacent elastic claws 10 provide the possibility of deformation of the elastic claws 10. In the scheme, the number of elastic claws 10 is multiple, and the elastic claws 10 are arranged in the circumferential direction of the side surface of the guide rod 6, and gaps 13 are formed between the elastic claws 10.

[0027] In the scheme, the widths of the elastic claws 10 are different or the widths of the elastic claws 10 are not completely the same. That is, the problem that the elastic claws 10 are easily detached when the shapes of the elastic claws 10 are the same and uniformly distributed in the circumferential direction is avoided. If the widths of the elastic claws 10 are the same, the elastic member 9 and the adjusting rod will rotate slightly due to vibration during braking, and the rotation angle will gradually increase with the working time, so that as long as one elastic claw 10 is clamped into the groove of the friction plate due to rotation, the other elastic claws 10 will also be clamped, and the risk of overall detachment will be increased. After setting elastic claws 10 with different widths, they need to be rotated into grooves with corresponding widths at the same time to be detached, which greatly increases the reliability.

[0028] Specifically in the present scheme, the elastic member 9 is detachably connected with the guide rod 6, the elastic member 9 is an independent integral structure, the guide rod 6 is provided with an annular mounting groove 14 on the outer side surface thereof, the elastic member 9 comprises a mounting ring 15, the elastic claw 10 is fixedly connected on the mounting ring 15, and the mounting ring 15 is sleeved in the mounting groove 14 and fixedly connected with the guide rod 6. The inner annular surface of the mounting ring 15 has the same slope as the outer side surface of the mounting groove 14, and the outer diameter of the outer side surface of the mounting groove 14 is larger than the diameter of the corresponding inner annular surface of the mounting ring 15.

[0029] In the present scheme, the cross-sectional diameter of the side surface of the mounting groove 14 is smaller near the spring end and larger away from the spring end, the inner side surface of the mounting ring 15 is matched with the shape of the side surface of the mounting groove 14, and the mounting ring 15 is changed into a non-closed annular structure by being provided with a penetrating deformation opening 16.

[0030] The inner diameter of the mounting ring 15 is smaller than the outer diameter of the outer side surface of the mounting groove 14; the guide rod 6 is provided with a limiting ring 19, the limiting ring 19 is located at the two axial ends of the outer side surface of the mounting groove 14, the limiting ring 19 and the guide rod 6 enclose a limiting groove, the outer diameter of the cross section of the outer side surface of the limiting groove is at least partially larger than the outer diameter of the main rod part 18 of the guide rod 6, and the mounting ring 15 is located between the limiting rings 19 and is limited to abut on the two limiting rings 19 at the two ends. The inner hole diameter of the limiting ring 19 can achieve the above function, and the specific size structure design can be referred to the drawings; wherein the limiting ring 19 is provided with a guide block 20, and the mounting ring is provided with a guide groove corresponding to the guide block 20.

[0031] In the present scheme, the end of the guide rod 6 away from the brake block 8 is provided with an adjusting hole 17. The adjusting hole 17 is used for rotating the guide rod 6 to adjust the position of the elastic claw 10, so that the elastic claw 10 and the guide rod 6 can be separated from the assembly structure.

[0032] Embodiment 2

[0033] The difference between the present embodiment and embodiment 1 is that the outer side surface of the end of the guide rod 6 connected with the brake block 8 is provided with external threads, and the guide rod 6 and the brake block 8 are fixedly connected through threads.

[0034] Embodiment 3

[0035] The difference between the present embodiment and embodiment 1 is that the elastic member 9 and the guide rod 6 are integrally formed.

[0036] Embodiment 4

[0037] The difference between the present embodiment and embodiment 1 is that the elastic claw 10 is directly fixedly installed on the guide rod 6 and is distributed along the circumferential direction of the guide rod 6.

[0038] Embodiment 5

[0039] The difference between this embodiment and embodiment 1 is that the elastic member 9 is fixedly connected with the guide rod 6 through sleeving or bonding or other ways.

Claims

1. A brake return mechanism characterized by: It comprises a support body, a guide rod (6) and a return spring (7), one end of the guide rod (6) is used for connecting with a brake block (8), a supporting surface is arranged on the guide rod (6), one end of the return spring (7) is supported on the support body, and the other end is supported on the supporting surface, and the support body does not move during braking and returning.

2. A brake return mechanism according to claim 1, characterised in that: It also comprises an elastic member (9), the elastic member (9) is located at the end of the guide rod (6) connected with the brake block (8), the elastic member (9) and the guide rod (6) are integrally formed or the elastic member (9) and the guide rod (6) are detachably fixedly connected; the elastic member (9) comprises elastic claws (10), the elastic claws (10) are located around the guide rod (6) and are used for limiting relative displacement of the guide rod (6) and the brake block (8).

3. A brake return mechanism according to claim 2, wherein: Gaps (13) are formed between the elastic claws (10).

4. A brake return mechanism according to claim 3, wherein: The number of the elastic claws (10) is multiple, and the elastic claws (10) are arranged along the circumferential direction of the side surface of the guide rod (6), and gaps (13) are formed between the elastic claws (10).

5. A brake return mechanism according to claim 4, wherein: The widths of the elastic claws (10) are different or the widths of the elastic claws (10) are not completely the same.

6. A brake return mechanism according to claim 3 or 4 or 5 wherein: The elastic member (9) and the guide rod (6) are detachably connected, the guide rod (6) is provided with an annular mounting groove (14) on the outer side surface thereof, the elastic member (9) comprises a mounting ring (15), the elastic claws (10) are fixedly connected to the mounting ring (15), and the mounting ring (15) is fixedly connected to the guide rod (6) by being sleeved in the mounting groove (14).

7. A brake return mechanism according to claim 6, wherein: The cross-sectional diameter of the side surface of the mounting groove (14) is smaller near the spring end and larger away from the spring end, the inner side surface of the mounting ring (15) is matched with the shape of the side surface of the mounting groove (14), and the mounting ring (15) is changed into a non-closed annular structure by being provided with a deformation opening (16) penetrating through.

8. A brake return mechanism according to claim 6, wherein: The inner diameter of the mounting ring (15) is smaller than the outer diameter of the outer side surface of the mounting groove (14), the guide rod (6) is provided with a limiting ring (19), the limiting ring (19) is located at the two ends of the outer side surface of the mounting groove (14) in the axial direction, the limiting ring (19) and the guide rod (6) enclose a limiting groove; the outer diameter of the cross section of the outer side surface of the limiting groove is at least partially larger than the outer diameter of the main rod part (18) of the guide rod (6); the mounting ring (15) is located between the limiting rings (19) and is limited to abut on the two limiting rings (19) at the two ends; the limiting ring (19) is provided with a guide block (20), and the mounting ring is provided with a guide groove corresponding to the guide block (20).

9. A brake return mechanism according to claim 1 or 2 or 3 or 4 or 5 wherein: An adjusting hole (17) is arranged at the end of the guide rod (6) away from the brake block (8).

10. A brake return mechanism according to claim 1, wherein: An external thread is arranged on the outer side surface of the end of the guide rod (6) connected with the brake block (8).

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