Brake bottom plate for automobile drum brake

Abstract

The utility model belongs to the field of automobile parts, and discloses a brake bottom plate for an automobile drum brake, which comprises a bottom plate seat, two symmetrical fixed lug edges are arranged on the outer wall of the bottom plate seat, two symmetrical supporting seats are arranged at the top of the bottom plate seat, and air cylinders are fixedly mounted at the tops of the supporting seats. The two output ends of the air cylinder are fixedly installed on the first traction rod and the second traction rod respectively. The two supporting seats are installed on the top of the bottom plate seat, the air cylinders are installed on the supporting seats, the output ends of the air cylinders are installed between the first transfer rod and the second traction rod respectively, and after the air cylinders work, the first rotary disc and the second brake disc can be driven to move; the first clamping ring and the second clamping ring on the first brake disc and the second brake disc are used for braking the tire, and after braking is finished, the corresponding brake discs can be rapidly reset by combining the corresponding reset assemblies, so that the efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of automotive components, and more specifically, to a brake back plate for an automotive drum brake. Background Art

[0002] A drum brake consists of a brake back plate, a brake cylinder, brake shoes and related connecting rods, springs, pins, and a brake drum; the brake back plate is also one of the important components of an automotive drum brake;

[0003] At present, there are certain deficiencies in the use of the brake back plate. For example, after emergency braking of the brake disc on the brake back plate, the reset of the brake disc will be delayed, and the flexibility of use is poor. Utility Model Content

[0004] In order to solve the above problems, the present application provides a brake back plate for an automotive drum brake.

[0005] The brake back plate for an automotive drum brake provided by the present application adopts the following technical solutions:

[0006] A brake back plate for an automotive drum brake includes a base seat. On the outer wall of the base seat, there are two symmetrically arranged fixed earpieces. On the top of the base seat, there are two symmetrically arranged support seats. On the top of the support seats, a cylinder is fixedly installed. The two output ends of the cylinder are respectively fixedly installed between a first traction rod and a second traction rod. The other end of the first traction rod is fixedly installed with a first brake disc, and the other end of the second traction rod is fixedly installed with a second brake disc. On the top of the base seat, a shaft rod is installed, and the first traction rod and the second traction rod that rotate are installed on the shaft rod.

[0007] Further, on the top of the base seat, two pairs of first fixing blocks and second fixing blocks are fixedly installed. On the top of the first fixing block, a first brake disc that slides is installed, and on the top of the second fixing block, a second brake disc that slides is installed.

[0008] Further, a first slider is arranged at the bottom of the first brake disc, and the first slider moves in a first limiting groove opened on the top of the first fixing block.

[0009] Further, on the inner wall of the first limiting groove, a first reset assembly is arranged, and the first reset assembly includes a first damper and a first reset spring. One end of the first reset assembly is fixedly installed with the first slider.

[0010] Further, a first clamping ring is arranged on one end wall of the first brake disc.

[0011] Further, a second slider is provided at the bottom of the second brake disc, and the second slider moves in a second limiting groove formed at the top of the second fixed block.

[0012] Further, a second return spring is provided on the inner wall of the second limiting groove, and the second return spring includes a second damper and a second return spring. One end of the second return spring is fixedly installed with the second slider.

[0013] Further, a second clamping ring is provided on one end wall of the second brake disc.

[0014] In summary, the present application includes at least one of the following beneficial technical effects: Two support seats are installed on the top of the bottom plate seat of the present utility model. A cylinder is installed on the support seat. The output ends of the cylinders are respectively installed with the first migration rod and the second traction rod. After the cylinder works, it can drive the first rotating disc and the second brake disc to move. The first clamping ring and the second clamping ring on the first brake disc and the second brake disc brake the tire. After the braking is completed, combined with the corresponding reset components, the corresponding brake disc can be quickly reset, improving efficiency. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of a brake bottom plate for an automotive drum brake;

[0016] Figure 2 It is a schematic position structure diagram of the second brake disc in the present application;

[0017] Figure 3 It is an enlarged structural diagram of part A in the present application.

[0018] Reference numerals in the figures: 1. Bottom plate seat; 2. Fixed ear; 3. Support seat; 4. Cylinder; 5. Shaft rod; 6. First traction rod; 7. Second traction rod; 8. First fixed block; 9. First brake disc; 10. First clamping ring; 11. Second fixed block; 12. Second brake disc; 13. Second clamping ring; 14. Limiting groove; 15. Damper; 16. Return spring; 17. Slider. Detailed Embodiment

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0022] The following further elaborates on this application in conjunction with the attached Figures 1-3 drawings for a more detailed description.

[0023] An embodiment of the present application discloses a brake backing plate for an automotive drum brake, which includes a base seat 1. On the outer wall of the base seat 1, two symmetric fixed earpieces 2 are provided. On the top of the base seat 1, two symmetric support seats 3 are provided. On the top of the support seats 3, a cylinder 4 is fixedly installed. The two output ends of the cylinder 4 are respectively fixedly installed between a first traction rod 6 and a second traction rod 7. The other end of the first traction rod 6 is fixedly installed with a first brake disc 9, and the other end of the second traction rod 7 is fixedly installed with a second brake disc 12. On the top of the base seat 1, a shaft rod 5 is installed, and the first traction rod 6 and the second traction rod 7 that rotate are installed on the shaft rod 5.

[0024] Refer to Figure 1 , on the top of the base seat 1, two pairs of first fixing blocks 8 and second fixing blocks 11 are fixedly installed. On the top of the first fixing blocks 8, a slidable first brake disc 9 is installed, and on the top of the second fixing blocks 11, a slidable second brake disc 12 is installed.

[0025] Refer to Figure 1 and Figure 3, a first sliding block 17 is provided at the bottom of the first brake disc 9. The first sliding block 17 moves in a first limiting groove 14 opened at the top of the first fixed block 8. A first reset assembly is provided on the inner wall of the first limiting groove 14, and the first reset assembly includes a first damper 15 and a first reset spring 16. One end of the first reset assembly is fixedly installed with the first sliding block 17. A first clamping ring 10 is provided on one end wall of the first brake disc 9.

[0026] Refer to Figure 1 and Figure 3 , a second sliding block is provided at the bottom of the second brake disc 12, and the second sliding block moves in a second limiting groove opened at the top of the second fixed block 11. A second reset spring is provided on the inner wall of the second limiting groove, and the second reset spring includes a second damper and a second reset spring. One end of the second reset spring is fixedly installed with the second sliding block. A second clamping ring 13 is provided on one end wall of the second brake disc 12.

[0027] The implementation principle of a brake back plate for an automotive drum brake in an embodiment of the present application is as follows: during use, two cylinders 4 work to drive the corresponding first traction rod 6 and second traction rod 7 to move, so that the corresponding first brake disc 9 and second brake disc 12 move. The first clamping ring 10 and the second clamping ring 13 on the first brake disc 9 and the second brake disc 12 perform braking work on the tire. After braking, the cylinders retract, and the first reset assembly and the second reset assembly will drive the first brake disc 9 and the second brake disc 12 to quickly reset, improving the flexibility of use.

[0028] The above are all preferred embodiments of the present application. The protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A brake base plate for automobile drum brakes, comprising a base plate seat (1), wherein the outer wall of the base plate seat (1) is provided with two symmetrical fixing ears (2), characterized in that: Two symmetrical support seats (3) are arranged on the top of the base plate seat (1), a cylinder (4) is fixedly installed on the top of the support seat (3), two output ends of the cylinder (4) are respectively fixedly installed between the first traction rod (6) and the second traction rod (7), the other end of the first traction rod (6) is fixedly installed between the first brake disc (9), and the other end of the second traction rod (7) is fixedly installed between the second brake disc (12), and a shaft rod (5) is installed on the top of the base plate seat (1), and the first traction rod (6) and the second traction rod (7) are rotatably installed on the shaft rod (5).

2. The brake base plate for automobile drum brake according to claim 1, characterized in that: Two pairs of first fixed blocks (8) and second fixed blocks (11) are fixedly mounted on the top of the base plate seat (1); a first sliding brake disc (9) is mounted on the top of the first fixed block (8); and a second sliding brake disc (12) is mounted on the top of the second fixed block (11).

3. The brake base plate for automobile drum brake according to claim 2, characterized in that: A first sliding block (17) is provided at the bottom of the first brake disc (9), and the first sliding block (17) moves in a first limiting groove (14) provided at the top of the first fixing block (8).

4. The brake base plate for automobile drum brake according to claim 3, characterized in that: A first reset component is arranged on the inner wall of the first limiting groove (14), and the first reset component comprises a first damper (15) and a first reset spring (16), and one end of the first reset component is fixedly mounted between the first slider (17).

5. The brake base plate for automobile drum brake according to claim 2, characterized in that: A first clamping ring (10) is arranged on one end wall of the first brake disc (9).

6. The brake base plate for automobile drum brake according to claim 1, characterized in that: A second sliding block is provided at the bottom of the second brake disc (12), and the second sliding block moves in a second limiting groove opened at the top of the second fixing block (11).

7. The brake base plate for automobile drum brake according to claim 6, characterized in that: A second return spring is arranged on the inner wall of the second limiting groove, and the second return spring comprises a second damper and a second return spring, and one end of the second return spring is fixedly installed between the second sliding block.

8. The brake base plate for automobile drum brake according to claim 1, characterized in that: A second clamping ring (13) is arranged on one end wall of the second brake disc (12).

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