Brake pad with uniform braking force

Abstract

The utility model discloses a brake pad with uniform braking force, which comprises a brake shoe fixedly connected through a brake wheel cylinder and an ejector rod, a friction lining is fixed on the brake shoe, and a brake link mechanism arranged on the brake shoe comprises a hinge rod, a brake rod and a brake block. The brake rod is hinged to the lining of one brake shoe through a pin shaft, the end of one side of the brake rod is hinged to the hinge rod, the end of the other side of the brake rod abuts against the brake check block fixed to the lining, and the other end of the hinge rod is hinged to the brake end of the other brake shoe. According to the device, the brake pad is provided with the brake connecting rod mechanism to connect the two brake shoes, so that when the brake shoes are braked by the brake wheel cylinder, the brake ends and the non-brake ends of the brake shoes can be braked at the same time, and the brake shoes drive the friction linings to move together to brake the brake drum; the outer end face of the friction lining and the inner end face of the brake drum are contacted at the same time, stress abrasion is even, and the service life of the friction lining is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to a brake pad with uniform braking force. Background Technology

[0002] Drum brake pads consist of brake shoes and friction pads. The brake shoes are curved, arc-shaped pads. During braking, the friction pads are pressed against the brake drum, generating friction to slow the vehicle down. In a drum brake system, a brake wheel cylinder presses one end of the brake shoe, which in turn moves the entire brake shoe, causing the friction pads on the brake shoe to be pressed against the brake drum, thus slowing the vehicle down. However, during braking, only one end of the brake shoe is the braking end; the other end is moved by an adjustment rod for braking. Therefore, in actual use, different ends of the friction pads on the brake shoe have different contact times with the brake drum. This results in the friction pads that contact the brake drum first experiencing higher wear, while the parts that contact the brake drum later experience less wear. In reality, to prevent brake failure, the entire brake system is often replaced immediately, resulting in wasted friction pads and significantly reducing the overall lifespan of the brake pads. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a brake pad with uniform braking force.

[0004] According to the technical solution provided in the embodiments of this application, a brake pad with uniform braking force includes a brake shoe and a friction lining fixedly connected. One end of the two brake shoes is fixedly connected by a brake wheel cylinder, and the other end is connected by a push rod. A brake linkage mechanism is provided on the brake shoe. The brake linkage mechanism includes a hinge rod, a brake rod, and a brake stop. The brake rod is hinged to the inner lining of one of the brake shoes by a pin. One end of the brake rod is hinged to the hinge rod, and the other end abuts against the brake stop fixed on the inner lining. The other end of the hinge rod is hinged to the braking end of the other brake shoe. When one end of the brake shoe is braked by the friction lining carried by the brake wheel cylinder, it will drive the hinge rod to act on the brake rod, causing the brake rod to rotate around the pin as the center, thereby actuating the brake stop fixed on the inner lining and realizing the movement of the non-braking end of the brake shoe.

[0005] Furthermore, one end of the brake linkage mechanism is hinged to the brake end of one of the brake shoes, and the other end is connected to the inner lining of the other brake shoe. There are two brake linkage mechanisms, which ensures that the friction linings on both brake shoes are in uniform contact with the brake drum.

[0006] Furthermore, the friction lining is fixed to the outer end face of the brake shoe.

[0007] Furthermore, the brake stop is a vertically placed plate, and the rotation of the brake lever can move the lining.

[0008] Furthermore, the end face where the brake lever abuts against the brake block is an arc-shaped end face, and several ball bearings are provided on the end face where the brake lever abuts against the brake block to reduce the friction between the brake lever and the brake block.

[0009] In summary, the beneficial effects of this application are as follows: The device of this application is equipped with a brake linkage mechanism on the brake pads to connect two brake shoes, so that when the brake shoes are braked by the brake wheel cylinder, the braking end and non-braking end of the brake shoes can be braked simultaneously. This allows the brake shoes to move together with the friction lining to brake the brake drum, so that the outer end face of the friction lining contacts the inner end face of the brake drum at the same time, resulting in uniform force and wear, and improving the service life of the friction lining. Attached Figure Description

[0010] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0011] Figure 1 This is a schematic diagram of the overall device of this utility model;

[0012] Figure 2 This is a schematic diagram of the connection structure between the brake linkage mechanism and the inner liner of this utility model.

[0013] The following numbers are labeled in the diagram: Brake shoe-1; Inner liner-11; Friction lining-2; Brake wheel cylinder-3; Push rod-4; Brake linkage mechanism-5; Hinge rod-51; Brake lever-52; Brake stop block-53; Pin-6. Detailed Implementation

[0014] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0015] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] A type of brake pad with uniform braking force, such as Figure 1 The two friction pads 2 are respectively fixed on the outer end faces of the two brake shoes 1. The upper ends of the two brake shoes 1 are fixedly connected by the brake wheel cylinder 3, and the lower ends are fixedly connected by the push rod 4.

[0017] The brake end of the upper part of the left brake shoe 1 is connected to the inner liner 11 of the right brake shoe 1 through the brake linkage mechanism 5.

[0018] like Figure 1 and Figure 2 As shown, the brake linkage mechanism 5 located on the right side of the brake pad is hinged to the brake shoe 1 on the left side via the left end of the hinge rod 51. The right end of the hinge rod 51 is hinged to the upper end of the brake rod 52 on the inner liner 11 of the brake shoe 1 located on the right side of the brake pad. Below the hinge point between the hinge rod 51 and the brake rod 52, the brake rod 52 is hinged to the inner liner 11 via the pin 6. A vertically placed brake stop block 53 is fixed on the inner liner 11 on the right side of the brake rod 52, and the right end face of the brake rod 52 abuts against the left end face of the brake stop block 53.

[0019] In use, when the two brake shoes 1 are actuated by the brake wheel cylinder 3, the upper parts of the two brake shoes 1 move to both sides first, and when the upper parts of the brake shoes 1 move, as... Figure 2 As shown, when the brake shoe 1 on the left side of the brake pad moves to the left, it will drive the hinge rod 51 to move to the left. At this time, the upper part of the brake rod 52 on the inner liner 11 will move to the left, while the lower part of the brake rod 52 will rotate counterclockwise around the pin 6. Since the right end of the brake rod 52 is in contact with the brake stop block 52, the brake stop block 52 will move to the right after the brake rod 52 is tilted. In this way, when the upper ends of the two brake shoes 1 move to both sides through the brake wheel cylinder 3, the middle part and even the lower part of the brake shoes 1 also move to both sides. This allows the outer end face of the friction lining 2 on the brake shoe 1 to contact the brake drum at the same time, so that the friction lining 2 is subjected to uniform friction force from the brake drum during braking, and at the same time improves the service life of the friction lining 2.

[0020] The above description is merely a preferred embodiment of this application and an explanation of the technical principles and other solutions employed. Furthermore, the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A brake pad with uniform braking force, comprising brake shoes (1) and friction linings (2) fixedly connected, wherein one end of the two brake shoes (1) is fixedly connected by a brake wheel cylinder (3), and the other end is connected by a push rod (4), characterized in that: A brake linkage mechanism (5) is provided on the brake shoe (1). The brake linkage mechanism (5) includes a hinge rod (51), a brake rod (52), and a brake stop (53). The brake rod (52) is hinged to the inner liner (11) of one of the brake shoes (1) by a pin (6). One end of the brake rod (52) is hinged to the hinge rod (51), and the other end abuts against the brake stop (53) fixed on the inner liner (11). The other end of the hinge rod (51) is hinged to the braking end of another brake shoe (1). When one end of the brake shoe (1) is braked by the brake wheel cylinder (3) with the friction lining (2), it will drive the hinge rod (51) to act on the brake rod (52), so that the brake rod (52) rotates around the pin (6) as the center, and then moves the brake stop block (53) fixed on the inner lining (11), so as to realize the movement of the non-braking end of the brake shoe (1).

2. The brake pad with uniform braking force according to claim 1, characterized in that: One end of the brake linkage mechanism (5) is hinged to the brake end of one of the brake shoes (1), and the other end is connected to the liner (11) of the other brake shoe (1).

3. The brake pad with uniform braking force according to claim 2, characterized in that: The number of the brake linkage mechanism (5) is two.

4. The brake pad with uniform braking force according to claim 1, characterized in that: The friction lining (2) is fixed to the outer end face of the brake shoe (1).

5. The brake pad with uniform braking force according to claim 1, characterized in that: The brake stop (53) is a vertically placed plate.

6. The brake pad with uniform braking force according to claim 1, characterized in that: The end face of the brake lever (52) that abuts against the brake stop block (53) is an arc-shaped end face.

7. The brake pad with uniform braking force according to claim 5, characterized in that: The brake lever (52) has several balls on the end face that abuts against the brake stop (53) to reduce the friction with the brake stop (53).

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