Automobile drum brake pad

Abstract

The utility model relates to the technical field of brake devices, and discloses an automobile drum brake pad which comprises a brake pad body, evenly distributed friction plates are fixedly connected to the surface of the top end of the brake pad body, evenly distributed limiting holes are formed in the outer wall of the front face of the brake pad body, and the two ends of a reset spring are movably connected to the evenly distributed limiting holes respectively. A groove is formed in one side of the friction plate located in the middle of the upper surface of the brake pad and penetrates to the upper surface of the brake pad, the brake pad alarm sensor is fixedly connected to the inner wall of the bottom end of the groove of the friction plate, a groove is formed in one side of the bottom end of the brake pad, and the brake pad temperature sensor is fixedly connected to the inner wall of the bottom end of the brake pad. The drum-type brake pad is compact and reasonable in structural design and good in heat dissipation and monitoring effect, danger is eradicated, the driving safety coefficient is greatly increased, and the problems that in the using process of the drum-type brake pad, the state is inconvenient to monitor, and the service life is short when the drum-type brake pad is overheated are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of brake devices, in particular to a drum brake pad for an automobile. Background Art

[0002] With the continuous advancement of automobile technology, drum brakes have undergone many improvements and optimizations. For example, processing spiral grooves can change the friction properties between the drum shoes and improve the braking effect. At the same time, the friction materials of brake pads have also been developed, from the original organic materials to semi-metallic materials, ceramic materials, etc., to adapt to different usage environments and needs.

[0003] In the prior art, a patent document with publication number CN202222670583.1 provides a car drum brake pad, which has the functions of convenient installation, disassembly, maintenance and replacement by setting a fixing mechanism, greatly facilitating the use of users.

[0004] Although the drum brake pad has many beneficial effects, the following problems still exist: the drum brake pad cannot be installed with a modular monitoring device, and the heat dissipation effect is not good, resulting in a short service life. For this reason, we propose an automobile drum brake pad. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides an automobile drum brake pad to solve the above-mentioned problems.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a car drum brake pad, including a brake pad, a top surface of the brake pad is fixedly connected to a uniformly distributed friction pad, a front outer wall of the brake pad is provided with uniformly distributed limiting holes, both ends of a reset spring are respectively movably connected to the uniformly distributed limiting holes, a groove is provided on one side of the friction pad located in the middle of the upper surface of the brake pad and passes through to the upper surface of the brake pad, and a brake pad alarm sensor is fixedly connected to the inner wall of the bottom end of the friction pad groove, a groove is provided on one side of the bottom end of the brake pad, and a brake pad temperature sensor is fixedly connected to the inner wall of the bottom end of the brake pad.

[0009] Preferably, the brake pad temperature sensor includes a box body, a temperature sensor base, a fixing screw, a sensing head, and a second wire interface. The bottom end of the box body is fixedly connected to the temperature sensor base, both sides of the temperature sensor base are rotatably connected to fixing screws, and the fixing screws are fixedly connected to the inner wall of the bottom end of the brake pad, the top of the box body is fixedly connected to the evenly distributed sensing heads, and the outer wall of the box body is fixedly connected to the second wire interface.

[0010] Preferably, a wire interface is fixedly connected to the front outer wall of the brake pad alarm sensor.

[0011] Preferably, the brake pump is movably connected to both sides of the brake pad, and the upper and lower ends of the brake pad are connected together to form a closed state.

[0012] Preferably, the side walls of the friction plates are provided with wear limit warning lines.

[0013] Preferably, equidistant gaps are provided between the friction plates fixedly connected to the surfaces of the brake pads.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a car drum brake pad, which has the following beneficial effects:

[0016] 1. The automobile drum brake pad is provided with a brake pad temperature sensor (including a box body, a temperature sensor base, fixing screws, a sensing head and a second wire interface) which can monitor the temperature of the brake pad in real time. The sensing head captures the temperature information and transmits it to the second wire interface through the circuit inside the box body, and then transmits it to the vehicle's control system, which helps prevent the brake pad from overheating, thereby avoiding brake failure or damage.

[0017] 2. The automobile drum brake pad is equipped with a brake pad alarm sensor (connected through a wire interface). With the use and wear of the brake pad, when the friction pad is worn to near the limit of its service life, the wear limit prompt line will be exposed. At this time, the brake pad alarm sensor will detect this change and send a signal to the vehicle's control system through the wire interface to remind the driver to replace the brake pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a partial enlarged schematic diagram of the utility model;

[0020] In the figure: 1. Brake pad; 2. Friction pad; 3. Limit hole; 4. Reset spring; 5. Brake pump; 6. Brake pad alarm sensor; 7. Brake pad temperature sensor; 8. Wire interface; 9. Box body; 10. Temperature sensor base; 11. Fixing screw; 12. Sensor head; 13. Second wire interface; 14. Wear limit indication line. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-2 A car drum brake pad comprises a brake pad 1, a top surface of the brake pad 1 is fixedly connected to a uniformly distributed friction pad 2, a front outer wall of the brake pad 1 is provided with uniformly distributed limiting holes 3, two ends of a return spring 4 are respectively movably connected to the uniformly distributed limiting holes 3, a groove is provided on one side of the friction pad 2 located in the middle of the upper surface of the brake pad 1 and passes through the upper surface of the brake pad 1, and a brake pad alarm sensor 6 is fixedly connected to the inner wall of the bottom end of the groove of the friction pad 2, a groove is provided on one side of the bottom end of the brake pad 1, and a brake pad temperature sensor 7 is fixedly connected to the inner wall of the bottom end of the brake pad 1.

[0023] Furthermore, the brake pad temperature sensor 7 includes a box body 9, a temperature sensor base 10, a fixing screw 11, a sensing head 12, and a second wire interface 13. The temperature sensor base 10 is fixedly connected to the bottom end of the box body 9, and the fixing screws 11 are rotatably connected to both sides of the temperature sensor base 10, and the fixing screws 11 are fixedly connected to the inner wall of the bottom end of the brake pad 1, the top of the box body 9 is fixedly connected to the evenly distributed sensing heads 12, and the outer wall of the box body 9 is fixedly connected to the second wire interface 13.

[0024] Furthermore, a wire interface 8 is fixedly connected to the front outer wall of the brake pad warning sensor 6 .

[0025] Furthermore, the brake pump 5 is movably connected to both sides of the brake pad 1, and connects the upper and lower ends of the brake pad 1 together to form a closed state.

[0026] Furthermore, the side walls of the friction plate 2 are provided with wear limit warning lines 14 .

[0027] Furthermore, equidistant gaps are provided between the friction plates 2 fixedly connected to the surface of the brake pad 1 .

[0028] Working principle: When the driver steps on the brake pedal, the brake pump 5 is activated, and the hydraulic or mechanical force inside the brake system pushes the brake pad 1 to the brake drum. Then the friction pad 2 on the brake pad 1 contacts the brake drum. Due to the relative movement between the two, friction is generated, which converts the vehicle's kinetic energy into heat energy to achieve the purpose of deceleration or parking. The return spring 4 is installed in the limit hole 3 of the brake pad 1. When the driver ends the brake operation and releases the brake, it helps the brake pad 1 return to its initial position and maintains a certain gap with the brake drum to reduce unnecessary friction and wear. There are equidistant gaps between the friction pads 2 fixedly connected to the surface of the brake pad 1. These gaps help dissipate heat and reduce the risk of damage to the brake pad due to overheating. The brake pad alarm sensor 6 (connected through the wire interface 8) is located on the inner wall of the bottom end of the groove of the friction pad 2. With the use and wear of the brake pad, when the friction pad 2 is worn to the limit of its service life, the wear limit prompt line 14 will be exposed. At this time, the brake pad alarm sensor 6 will detect this change and send a signal to the vehicle's control system through the wire interface 8 to remind the driver to replace the brake pads. The brake pad temperature sensor 7 (including a box body 9, a temperature sensor base 10, a fixing screw 11, a sensing head 12 and a second wire interface 13) can monitor the temperature of the brake pad 1 in real time. The sensing head 12 captures the temperature information and transmits it to the second wire interface 13 through the circuit inside the box body 9, and then transmits it to the vehicle's control system, which helps prevent the brake pads from overheating, thereby avoiding brake failure or damage.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automobile drum brake pad, comprising a brake pad (1), characterized in that: The top surface of the brake pad (1) is fixedly connected to a uniformly distributed friction pad (2); the front outer wall of the brake pad (1) is provided with uniformly distributed limiting holes (3); both ends of the return spring (4) are movably connected to the uniformly distributed limiting holes (3); one side of the friction pad (2) located in the middle of the upper surface of the brake pad (1) is provided with a groove and passes through the upper surface of the brake pad (1); the brake pad alarm sensor (6) is fixedly connected to the inner wall of the bottom end of the groove of the friction pad (2); one side of the bottom end of the brake pad (1) is provided with a groove, and the brake pad temperature sensor (7) is fixedly connected to the inner wall of the bottom end of the brake pad (1).

2. The automobile drum brake pad according to claim 1, characterized in that: The brake pad temperature sensor (7) comprises a box body (9), a temperature sensor base (10), a fixing screw (11), a sensing head (12), and a second wire interface (13); the bottom end of the box body (9) is fixedly connected to the temperature sensor base (10); both sides of the temperature sensor base (10) are rotatably connected to the fixing screws (11), and the fixing screws (11) are fixedly connected to the inner wall of the bottom end of the brake pad (1); the top end of the box body (9) is fixedly connected to the sensing head (12) which is evenly distributed; and the outer wall of the box body (9) is fixedly connected to the second wire interface (13).

3. The automobile drum brake pad according to claim 1, characterized in that: A wire interface (8) is fixedly connected to the front outer wall of the brake pad alarm sensor (6).

4. The automobile drum brake pad according to claim 1, characterized in that: The brake pump (5) is movably connected to both sides of the brake pad (1), and connects the upper and lower ends of the brake pad (1) together to form a closed state.

5. The automobile drum brake pad according to claim 1, characterized in that: The side walls of the friction plates (2) are each provided with a wear limit prompt line (14).

6. The automobile drum brake pad according to claim 1, characterized in that: Equidistant gaps are provided between the friction plates (2) fixedly connected to the surface of the brake pad (1).

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