Automatic return mechanism for brake lining

Abstract

The utility model discloses a brake lining automatic return mechanism which comprises a support, the support is located outside a brake disc, a fixing mechanism is arranged on the side face of the support, an assembling mechanism is arranged on the inner side of the fixing mechanism, the assembling mechanism is located on the side face of a brake lining, and a first pull-back mechanism and a second pull-back mechanism which are connected with the brake lining are arranged in the middle of the assembling mechanism. The first pull-back mechanism comprises a first pull-back cylinder, a first movable cylinder, an air spring, a first spring and an assembling ring. The brake lining is pulled back from the middle of the brake lining through the first pull-back mechanism by means of the air spring and the first spring, meanwhile, the second pull-back mechanisms distributed on the two sides of the first pull-back mechanism synchronously pull back the brake lining through the second compressed springs, and in the process, the brake lining is pulled back synchronously through the second compressed springs. The second pull-back mechanism can guide the force application direction of pulling back the brake lining, the conditions of pull-back force loss and poor pull-back effect caused by unstable pull-back are reduced, and then stable and efficient pull-back of the brake lining by the automatic return mechanism is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of brake linings, in particular to an automatic return mechanism for brake linings. Background Art

[0002] Brake linings, also commonly known as brake pads, are components in the braking systems of vehicles such as cars and motorcycles that come into direct contact with the brake disc or brake drum to generate friction, thereby slowing or stopping the vehicle. The brake lining automatic return mechanism is an important part of the braking system. Its main function is to ensure that the brake lining can quickly and accurately return to its original position after the braking operation is completed, so that the appropriate gap between the brake components (such as brake shoes or brake calipers) and the brake disc or brake drum is maintained. This avoids unnecessary friction between the brake lining and the brake components, preventing problems such as overheating of the brake system, excessive wear, and reduced vehicle power transmission efficiency.

[0003] The prior art with patent number CN 211737832 U discloses: comprising a brake disc and a bracket, wherein the bracket is located on both sides of the brake disc, a brake pad is mounted on the bracket, one end of the brake pad is fixedly connected to a piston rod, the brake pad is provided with a return mechanism for actively returning the brake pad, an anti-vibration mechanism is provided between the brake pad and the bracket for preventing the brake pad from vibrating, the anti-vibration mechanism comprises an upper end seat, a lower end seat and a sleeve, the upper end seat is fixedly connected to the brake pad, the lower end seat is fixedly connected to the bracket, the sleeve is located between the upper end seat and the lower end seat, a fixed magnet is fixedly connected to the inner wall of the sleeve, both sides of the fixed magnet are fixedly connected to return members, and are respectively fixed to the upper end seat and the lower end seat by two return members, so as to realize active return of the brake pad and reduce vibration of the brake pad;

[0004] The above patent document discloses an active return mechanism for vehicle brake pads to solve the problem of brake pad vibration. Although the stand in the above patent can reduce the vibration of the brake pads to a certain extent, the following shortcomings are found in the actual use of the return mechanism:

[0005] Disadvantages: (1) The spring inside the return mechanism is not stable enough when pulling back the brake lining, which can easily cause difficulty in pulling back, increase wear, and result in poor pulling back effect; (2) The disassembly and assembly of the pulling back mechanism is difficult, which is not conducive to the staff to replace the components in the pulling back mechanism in time. Utility Model Content

[0006] The purpose of the utility model is to solve the shortcomings of the prior art, such as the spring inside the return mechanism is not stable when pulling back the brake lining, which is easy to cause pulling back difficulties, increased wear, poor pulling back effect and inconvenience in replacing the return mechanism, and to propose an automatic return mechanism for the brake lining.

[0007] In order to solve the problems in the prior art of the spring inside the return mechanism when pulling back the brake lining, which easily leads to difficulty in pulling back, increased wear, poor pulling effect, and inconvenience in replacing the return mechanism, the utility model adopts the following technical solution: comprising a bracket, the bracket being located outside the brake disc, a fixing mechanism being provided on the side of the bracket, an assembly mechanism being provided on the inside of the fixing mechanism, the assembly mechanism being located on the side of the brake lining, and a first pulling back mechanism and a second pulling back mechanism being provided in the middle of the assembly mechanism connected to the brake lining;

[0008] The pulling back mechanism includes a pulling back cylinder, a movable cylinder, an air spring, a spring and an assembly ring. A movable cylinder is provided on the inner side of the pulling back cylinder. The movable cylinder engages and slides with the pulling back cylinder. An air spring is provided in the middle of the movable cylinder. One end of the air spring is fixedly connected to the movable cylinder. The end of the air spring facing away from the movable cylinder is fixedly connected to the inner side of the pulling back cylinder. The assembly ring is fixedly provided on the side of the brake lining and is threadedly connected to the movable cylinder.

[0009] Preferably: the mirror image of the pulling back mechanism 2 is distributed on both sides of the pulling back mechanism 1, and the pulling back mechanism 2 includes a pulling back cylinder 2, a supporting ring, a movable cylinder 2 and a spring 2. A supporting ring is provided on the inner side of the pulling back cylinder 2, and a movable cylinder 2 is provided on the side of the supporting ring. A spring 2 is provided on the edge of the movable cylinder 2, and the spring 2 is located in the gap between the supporting ring and the movable cylinder 2. A connecting component is provided in the middle of the movable cylinder 2.

[0010] Preferably, the connecting assembly includes an assembly disc and an assembly rod, the assembly disc is fixedly connected to the brake lining, an assembly rod is provided in the middle of the assembly disc, and the assembly rod is threadedly connected to the movable cylinder.

[0011] Preferably: the fixing mechanism is mirror-imaged at the edge of the bracket, the fixing mechanism includes a fixing plate and a limiting rod, the fixing plate is rotatably hinged to the bracket, a mounting groove is opened in the middle of the fixing plate, a limiting rod is provided in the middle of the limiting rod, and the limiting rod is threadedly connected to the bracket.

[0012] Preferably: the assembly mechanism includes a horizontal plate and a fixed plug-in block, fixed plug-in blocks are provided at both ends of the horizontal plate, the fixed plug-in blocks are engaged and slid with the installation grooves, a socket is opened in the middle of the fixed plug-in block, the socket is correspondingly arranged with the limiting plug-in rod, and the limiting plug-in rod is connected with the fixed plug-in block through.

[0013] Preferably, a second installation opening corresponding to the second pulling-back mechanism and a first installation opening corresponding to the first pulling-back mechanism are provided in the middle of the horizontal plate. The second installation opening is engaged with the second pulling-back mechanism, and the first installation opening is engaged with the first pulling-back mechanism.

[0014] Preferably, the second retraction mechanism further comprises a second connecting ring and a second adjusting block. The second connecting ring is arranged outside the second retraction cylinder. The second connecting ring engages and rotates with the second mounting port. The second adjusting block is arranged at the second end of the retraction cylinder.

[0015] Preferably, the retraction mechanism further comprises a connecting ring and an adjusting block. The connecting ring is arranged on the outside of the retraction cylinder. The connecting ring is engaged with the mounting port and rotates. The adjusting block is located at an end of the retraction cylinder.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. Retraction mechanism 1 retracts the brake lining from the center of the brake lining using an air spring and a pair of springs. Simultaneously, retraction mechanisms 2, located on either side of retraction mechanism 1, simultaneously retract the brake lining using compressed springs. During this process, retraction mechanism 2 guides the direction of the force applied to retract the brake lining, reducing loss of retraction force and poor retraction results caused by unstable retraction, thereby ensuring stable and efficient retraction of the brake lining by the automatic retraction mechanism.

[0018] 2. Due to the characteristics of the retraction mechanism 1 and the retraction mechanism 2 being connected to the brake lining, the retraction cylinder 1 and the retraction cylinder 2 can be separated from or connected to the brake lining when they rotate, and can be disassembled and fixed in conjunction with the assembly mechanism and the fixing mechanism, making it more convenient to replace the retraction cylinder 1 and the retraction cylinder 2 that provide the retraction power with new ones. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 It is a side view schematic diagram of the entire utility model;

[0021] Figure 2 This is a schematic diagram of the second retraction mechanism of the present invention;

[0022] Figure 3 This is a schematic diagram of the activity of the second pulling-back mechanism of the present invention;

[0023] Figure 4 Schematic diagram of the first retraction mechanism of the present invention;

[0024] Figure 5 is a schematic diagram of the fixing mechanism of the present utility model;

[0025] Figure 6 Schematic diagram of the distribution of the first pulling-back mechanism and the second pulling-back mechanism of the present invention;

[0026] Serial numbers in the figure: 1. bracket; 2. fixing mechanism; 21. fixing plate; 22. limiting plug rod; 3. assembly mechanism; 31. horizontal plate; 32. fixing plug block; 4. pulling back mechanism one; 41. pulling back cylinder one; 42. movable cylinder one; 43. air spring; 44. spring one; 45. assembly ring; 46. connecting ring one; 47. adjusting block one; 5. pulling back mechanism two; 51. pulling back cylinder two; 52. supporting ring; 53. movable cylinder two; 54. spring two; 55. assembly disc; 56. assembly rod; 57. connecting ring two; 58. adjusting block two; 6. brake lining; 7. brake disc. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Example 1: In order to achieve the purpose of long-term use of the return mechanism, this embodiment provides a brake lining automatic return mechanism. Figure 1-6 Specifically, it includes a bracket 1, which is located outside the brake disc 7. A mounting and fixing mechanism 2 for a retraction mechanism 1 4 and a retraction mechanism 2 5 is provided on the side of the bracket 1. An assembly mechanism 3 is provided inside the fixing mechanism 2. The assembly mechanism 3 is used to fix the positions of the retraction mechanism 1 4 and the retraction mechanism 2 5. The assembly mechanism 3 is located on the side of the brake lining 6. A retraction mechanism 1 4 and a retraction mechanism 2 5 connected to the brake lining 6 are provided in the middle of the assembly mechanism 3.

[0029] The retraction mechanism 4 includes a retraction cylinder 41, a movable cylinder 42, an air spring 43, a spring 44 and an assembly ring 45. A movable cylinder 42 is provided on the inner side of the retraction cylinder 41. The movable cylinder 42 engages and slides with the retraction cylinder 41. An air spring 43 is provided in the middle of the movable cylinder 42. The air spring 43 can provide power for the movable cylinder 42 to retract the brake lining 6. A spring 44 is provided on the outer side of the movable cylinder 42. The spring 44 can further move the movable cylinder 42 after the movable cylinder 42 moves. One end of the air spring 43 is fixedly connected to the movable cylinder 42. The end of the air spring 43 facing away from the movable cylinder 42 is fixedly connected to the inner side of the retraction cylinder 41. The assembly ring 45 is fixedly arranged on the side of the brake lining 6. The assembly ring 45 is threadedly connected to the movable cylinder 42. Under the threaded connection between the assembly cylinder and the movable cylinder 42, it is convenient for the staff to replace the retraction cylinder equipped with the air spring 43 and the spring 44.

[0030] In the present invention, the second pulling mechanism 5 is mirror-imaged and distributed on both sides of the first pulling mechanism 4. The second pulling mechanism 5 includes a second pulling cylinder 51, a supporting ring 52, a second movable cylinder 53 and a second spring 54. The inner side of the second pulling cylinder 51 is provided with a supporting ring 52, and the side of the supporting ring 52 is provided with a second movable cylinder 53. The edge of the second movable cylinder 53 is engaged with a second spring 54. The second spring 54 can provide the second pulling mechanism 5 with power to pull back the brake lining 6. The second spring 54 is located in the gap between the supporting ring 52 and the second movable cylinder 53. The middle part of the second movable cylinder 53 is provided with a connecting assembly connected to the brake lining 6. When the second movable cylinder 53 moves, the second spring 54 is compressed, so that after the brake lining 6 completes braking, the second movable cylinder 53 is assisted to automatically pull back the brake lining 6 through the connecting assembly.

[0031] In the present invention, the connecting assembly includes an assembly plate 55 and an assembly rod 56. The assembly plate 55 is fixedly connected to the brake lining 6. An assembly rod 56 is provided in the middle of the assembly plate 55. The assembly rod 56 is threadedly connected to the second movable cylinder 53. The threaded connection between the assembly rod 56 and the second movable cylinder 53 ensures that the second movable cylinder 53 is firmly connected to the brake lining 6, and facilitates the later replacement of the second retraction cylinder 51 equipped with the second movable cylinder 53 and the second spring 54.

[0032] During the process of the automatic retraction mechanism retracting the brake pad, the retraction mechanism 1 4 pulls back the brake pad 6 from the middle of the brake pad 6 by relying on the air spring 43 and the spring 1 44. At the same time, the retraction mechanism 2 5 distributed on both sides of the retraction mechanism 1 4 synchronously pulls back the brake pad 6 through the compressed spring 2 54. During this process, the retraction mechanism 2 5 can guide the force direction of pulling back the brake pad 6, reduce the loss of pulling back force caused by unstable pulling back, and the poor pulling back effect, which is conducive to ensuring that the automatic return mechanism pulls back the brake pad 6 stably and efficiently.

[0033] Example 2:

[0034] In the first embodiment, there is still the problem of inconvenience in replacing accessories. Therefore, based on the first embodiment, this embodiment further includes a fixing mechanism 2: the fixing mechanism 2 is mirrored and arranged at the edge of the bracket 1. The fixing mechanism 2 includes a fixing plate 21 and a limiting plug rod 22. The fixing plate 21 is rotatably hinged to the bracket 1. The rotatably hinged fixing plate 21 is fixed with an assembly mechanism 3 equipped with a pull-back mechanism 1 4 and a pull-back mechanism 2 5. A mounting groove is provided in the middle of the fixing plate 21. A limiting plug rod 22 is provided in the middle of the limiting plug rod 22. The limiting plug rod 22 is threadedly connected to the bracket 1. The mounting groove and the limiting plug rod 22 provided on the side of the fixing plate 21 can lock the assembly mechanism 3 inside the fixing plate 21.

[0035] In the present invention, the assembly mechanism 3 includes a horizontal plate 31 and a fixed plug 32. The fixed plugs 32 are provided at both ends of the horizontal plate 31. The fixed plugs 32 are engaged and slid with the mounting grooves. A socket is provided in the middle of the fixed plug 32. The socket is corresponding to the limiting plug 22. The limiting plug 22 is connected to the fixed plug 32 through the through connection between the limiting plug 22 and the fixed socket, and the limiting plug 22 is fixed to the bracket 1 with a thread, so that the assembly mechanism 3 and the fixed plate 21 can be firmly connected.

[0036] As an improvement of the above scheme, the middle part of the horizontal plate 31 is provided with an installation port 2 corresponding to the pull-back mechanism 25 and an installation port 1 corresponding to the pull-back mechanism 14. The installation port 2 is engaged and connected with the pull-back mechanism 25, and the installation port 1 is engaged and connected with the pull-back mechanism 14. The pull-back mechanism 25 also includes a connecting ring 2 57 and an adjusting block 2 58. The connecting ring 2 57 is arranged on the outside of the pull-back cylinder 2 51, and the connecting ring 2 57 is engaged and rotated with the installation port 2. The adjusting block 2 58 is arranged at the end of the pull-back cylinder 2 51. The pull-back mechanism 14 also includes a connecting ring 1 46 and an adjusting block 1 47. The connecting ring 1 46 is arranged on the outside of the pull-back cylinder 1 41, and the connecting ring 1 46 is engaged and rotated with the installation port 1. The adjusting block 1 47 Located at the end of the retraction cylinder 41, after the automatic retraction mechanism has been used for a long time, the staff opens the fixing mechanism 2. At this time, by rotating the adjusting block 2 58 and the adjusting block 1 47, the assembly ring 45 can be separated from the threaded movable cylinder 42, and the assembly rod 56 can be separated from the threaded movable cylinder 2 53. In this way, it is convenient for the staff to replace the retraction cylinder 1 41 and the retraction cylinder 2 51 together with the assembly mechanism 3. At the same time, after replacing the new accessories, by rotating the adjusting block 2 58 and the adjusting block 1 47, it can be quickly connected to the brake lining 6, thereby making it more convenient for the automatic retraction mechanism to replace the retraction cylinder 1 41 and the retraction cylinder 2 51 equipped with providing retraction power.

[0037] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A brake lining automatic return mechanism, characterized by: The invention comprises a bracket (1), wherein the bracket (1) is located outside the brake disc (7), a fixing mechanism (2) is provided on the side of the bracket (1), an assembly mechanism (3) is provided on the inner side of the fixing mechanism (2), the assembly mechanism (3) is located on the side of the brake lining (6), and a first retraction mechanism (4) and a second retraction mechanism (5) connected to the brake lining (6) are provided in the middle of the assembly mechanism (3); The retraction mechanism (4) comprises a retraction cylinder (41), a movable cylinder (42), an air spring (43), a spring (44) and an assembly ring (45). The inner side of the retraction cylinder (41) is provided with a movable cylinder (42). The movable cylinder (42) and the retraction cylinder (41) are engaged and slid. The middle part of the movable cylinder (42) is provided with an air spring (43). The outer side of the movable cylinder (42) is provided with a spring (44). One end of the air spring (43) is fixedly connected to the movable cylinder (42). The end of the air spring (43) away from the movable cylinder (42) is fixedly connected to the inner side of the retraction cylinder (41). The assembly ring (45) is fixedly provided on the side of the brake lining (6). The assembly ring (45) is threadedly connected to the movable cylinder (42).

2. The brake lining automatic return mechanism according to claim 1, characterized in that: The second pulling-back mechanism (5) is mirror-imaged and distributed on both sides of the first pulling-back mechanism (4). The second pulling-back mechanism (5) comprises a second pulling-back cylinder (51), a supporting ring (52), a second movable cylinder (53) and a second spring (54). The inner side of the second pulling-back cylinder (51) is provided with a supporting ring (52), the side of the supporting ring (52) is provided with a second movable cylinder (53), the edge of the second movable cylinder (53) is engaged with a second spring (54), the second spring (54) is located in the gap between the supporting ring (52) and the second movable cylinder (53), and a connecting component is provided in the middle of the second movable cylinder (53).

3. The automatic return mechanism for a brake lining according to claim 2, characterized in that: The connecting assembly comprises an assembly disc (55) and an assembly rod (56). The assembly disc (55) is fixedly connected to the brake lining (6). An assembly rod (56) is provided in the middle of the assembly disc (55). The assembly rod (56) is threadedly connected to the second movable cylinder (53).

4. The automatic return mechanism for brake lining according to claim 1, characterized in that: The fixing mechanism (2) is mirror-imaged and arranged at the edge of the bracket (1). The fixing mechanism (2) comprises a fixing plate (21) and a limiting plug rod (22). The fixing plate (21) is rotatably hinged to the bracket (1). A mounting groove is provided in the middle of the fixing plate (21). A limiting plug rod (22) is provided in the middle of the limiting plug rod (22). The limiting plug rod (22) is threadedly connected to the bracket (1).

5. The automatic return mechanism for brake lining according to claim 1, characterized in that: The assembly mechanism (3) comprises a transverse plate (31) and a fixed plug block (32). The fixed plug blocks (32) are provided at both ends of the transverse plate (31). The fixed plug blocks (32) engage and slide with the mounting grooves. A socket is provided in the middle of the fixed plug block (32). The socket is provided corresponding to the limiting plug rod (22). The limiting plug rod (22) and the fixed plug block (32) are connected through.

6. The automatic return mechanism for brake lining according to claim 5, characterized in that: The middle portion of the transverse plate (31) is provided with a second mounting opening corresponding to the second retracting mechanism (5) and a first mounting opening corresponding to the first retracting mechanism (4). The second mounting opening is engaged with the second retracting mechanism (5), and the first mounting opening is engaged with the first retracting mechanism (4).

7. The automatic return mechanism for brake lining according to claim 2, characterized in that: The retraction mechanism 2 (5) further comprises a connecting ring 2 (57) and an adjusting block 2 (58). The connecting ring 2 (57) is arranged on the outside of the retraction tube 2 (51). The connecting ring 2 (57) is engaged with the mounting port 2 for rotation. The adjusting block 2 (58) is arranged at the end of the retraction tube 2 (51).

8. The brake lining automatic return mechanism according to claim 1, characterized in that: The retraction mechanism (4) further comprises a connecting ring (46) and an adjusting block (47). The connecting ring (46) is arranged on the outside of the retraction tube (41). The connecting ring (46) is engaged with the mounting port and rotates. The adjusting block (47) is located at the end of the retraction tube (41).

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