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Brake shoe in drum brake

A technology of drum brakes and brake shoes, which is applied in the field of brake shoes, can solve the problems of low production efficiency in the riveting process, achieve the effects of increasing the braking area, increasing the braking force, and improving the installation efficiency

Inactive Publication Date: 2020-05-29
高自强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After research on drum brakes in economical cars and heavy-duty vehicles, it is found that the area of ​​the riveting holes on the brake pads accounts for about 10% of the contact area between the brake pads and the brake drum, and the production efficiency of the riveting process lower
The brake pads and brake blocks are fixed by bonding, although it can ensure that the contact area between the brake pads and the brake drum is not lost, but the high temperature generated during the braking process will cause the brake pads and brake pads to The adhesive fixation between the drums fails, so the current adhesive fixation method is generally only used on economical cars

Method used

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  • Brake shoe in drum brake
  • Brake shoe in drum brake
  • Brake shoe in drum brake

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: as figure 1 , 2 , 3, the brake pad 1 and the brake shoe 2 are connected through a dovetail groove, and the opening direction of the dovetail groove is along the width direction of the brake pad. When braking, the friction force between the brake pad and the brake drum is transmitted to the brake shoe by the brake pad through the slopes on both sides of the dovetail groove. In order to prevent the force between the brake pad and the brake drum along the axis of the brake drum, 1-2 rivets 3 are installed between the brake pad and the brake shoe or an adhesive is applied between the brake pad and the brake shoe to prevent The brake pad and the brake shoe move relatively along the axis of the brake drum, that is, the width direction of the brake pad and the brake shoe.

Embodiment 2

[0016] Embodiment 2: as Figure 4 As shown, four brake shoes 2 and eight brake pads 1 respectively installed on the four brake shoes are installed in the brake drum 5, and the brake device is a four-hoof eight brake device. When the brake cam 4 rotates, the four brake shoes are stretched outwards, so that eight brake pads and the brake drum generate frictional force to achieve the purpose of braking.

[0017] In the above embodiment, the connection form of the dovetail groove is adopted, and the contact surface of the brake pad and the brake shoe is provided with a dovetail groove along the width direction, and the cross section matching the dovetail groove is formed at the corresponding position of the brake shoe in the shape of a dovetail groove. When installing, align the dovetail groove on the brake pad with the protrusion on the brake shoe and push it in. Dovetail grooves can also be formed along the width direction on the contact surface between the brake shoes and the ...

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Abstract

The invention relates to a drum brake, and particularly relates to a brake shoe in a drum brake. The brake shoe comprises a brake shoe body and a brake pad fixed to the brake shoe body. The brake shoeis characterized in that the brake pad is connected with the brake shoe body through a dovetail groove. According to the technical scheme of the invention, the brake contact area can be effectively increased by about 10%, so that the brake force of an automobile can be increased; and moreover, the installation efficiency between the brake pad and the brake shoe body can be effectively increased.

Description

[0001] Technical field [0002] The invention relates to a drum brake, in particular to a brake shoe in the drum brake. Background technique [0003] Drum brakes are also called block brakes, and brakes are achieved by the friction between the brake pads installed on the brake shoes and the brake drum. Drum brakes are widely used in some economical cars and heavy vehicles due to their relatively simple structure, low cost, and large braking force. [0004] At present, there are mainly two ways to connect the brake shoes and the brake pads, one is to use rivets to rivet the brake pads on the brake shoes, and the other is to use bonding to fix the brake pads on the brake shoes. When the brake pad is fixed on the brake shoe by riveting, it is necessary to open several holes for riveting on the brake pad, and the braking force depends on the area of ​​the brake pad and the positive pressure between the brake pad and the brake drum. proportional. After research on drum brakes in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D65/08F16D69/04
CPCF16D65/08F16D69/0416F16D2069/0433F16D2069/0466
Inventor 高自强刘文华王燕茹王嘉诚郑佳
Owner 高自强
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