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Drum brake

A technology of drum brakes and brake drums, which is applied to the types of brakes, brake components, brake parts, etc., can solve the problems of short service life of friction plates, increased maintenance costs, and damage to brake drums, etc., to achieve increased frictional braking The effect of power, prolonging service life and reducing maintenance cost

Inactive Publication Date: 2015-06-24
李瑾瞳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the friction plates of traditional drum brakes are all installed on the brake shoes. When braking, the brake shoes are opened, and the friction plates are pressed against the inner side of the brake drum to form friction braking. Soft and low hardness, the friction lining will be worn first during braking, which leads to a very short service life of the friction lining. When the friction lining itself wears out, it will also wear the brake drum, causing damage to the brake drum and shortening the life of the vehicle. The maintenance cycle increases the maintenance cost; moreover, the friction plate directly rubs against the brake drum, and the heat generated by the friction causes the thermal deformation of the brake drum, which affects the normal use of the brake drum

Method used

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Embodiment 1

[0035] Such as figure 1 As shown, the present invention provides a drum brake, including a brake drum 1, a friction plate 3 and a brake shoe 2, the friction plate 3 is fixedly installed on the inner side of the brake drum 1, and the inner surface of the friction plate 3 forms a friction On the other hand, there are many ways to fix the friction plate 3 and the brake drum 1 , which can be connected by screws 304 , rivets, or other forms of fixing, which are not limited here.

[0036] The main concept of the present invention is to fix the friction plate 3 on the inner side of the brake drum 1, changing the traditional structure of fixing the friction plate 3 on the brake shoe 2, and blocking the heat from the friction plate 3 during friction braking. Transfer to the brake drum 1, avoiding various hazards caused by the thermal deformation of the brake drum 1. Moreover, the use area of ​​the friction plate 3 is increased, the wear of the friction plate 3 is reduced, and the serv...

Embodiment 2

[0039] Such as figure 1 As shown, the present invention provides a drum brake, the structure of which is basically the same as that of Embodiment 1, including a brake drum 1, a friction plate 3 and a brake shoe 2, and the friction plate 3 is fixedly installed on the inner side of the brake drum 1 , The inner surface of the friction plate 3 forms a friction surface. The inventor has done further research. The friction plate 3 is divided into several friction plate monomers 301. A gap 302 is provided between two adjacent friction plate monomers 301. The gap 302 is set obliquely. The inclined setting refers to the gap 302 The extension direction forms an included angle with the extension direction of the bus bar of the friction disc 3, and the size of the included angle is not limited here. Since the material of the friction disc 3 itself is relatively soft, it does not affect the brake shoes 2 and other braking components during braking. Cutting force will be generated and brak...

Embodiment 3

[0041] Such as figure 1As shown, the present invention provides a drum brake, the structure of which is basically the same as that of Embodiment 1, including a brake drum 1, a friction plate 3 and a brake shoe 2, and the friction plate 3 is fixedly installed on the inner side of the brake drum 1 , The inner surface of the friction plate 3 forms a friction surface. The inventor has done further research. The inner surface of the friction plate 3 is provided with a number of grooves 303. One end of the groove 303 can be opened and the other end can be blocked. Each groove 303 can also be connected to the two end surfaces of the friction plate 3. The groove 303 is arranged obliquely. The oblique setting means that the extending direction of the groove 303 forms an included angle with the extending direction of the busbar of the friction plate 3. The angle is not limited here. For the same reason, the friction plate 3 has The groove 303, because the material of the friction plate...

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Abstract

The invention discloses a drum brake and belongs to the technical field of brakes. The drum brake comprises a brake drum, a friction plate and a brake shoe, wherein the friction plate is fixedly installed on the inner side of the brake drum, and a friction face is formed on the inner surface of the friction plate. The heat deformation of the brake drum is avoided, the service life of the friction plate and the maintenance period of the brake drum are prolonged, the using performance of the drum brake is improved, and the drum brake is widely produced and used.

Description

technical field [0001] The invention relates to the technical field of vehicle brakes, in particular to a drum brake. Background technique [0002] At present, there are two main types of vehicle brakes, one is drum brakes and the other is disc brakes. The mainstream of drum brakes is the internal tension type. Its brake shoes are located on the inner side of the brake drum. When braking, the brake shoes open outwards and rub against the inner side of the brake drum to achieve the purpose of braking. Compared with disc brakes, the braking efficiency and heat dissipation of drum brakes are much worse. The braking force stability of drum brakes is poor, and the braking force varies greatly on different road surfaces, which is not easy to control. However, due to the poor heat dissipation performance, a large amount of heat will be accumulated during the braking process, and the brake shoes and brake drums are prone to extremely complex deformations under the influence of high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D65/08F16D65/827
Inventor 李瑾瞳李志宝
Owner 李瑾瞳
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