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Drum brake

A technology of drum brakes and brake shoes, which is applied in the direction of mechanically driven drum brakes and brake parts, can solve the problems of brake noise, locking, dragging, etc., and solve the problems of uneven wear and large braking torque Effect

Inactive Publication Date: 2012-03-14
BEIJING TINGYI BRAKING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a drum brake in which the brake shoe can be radially opened, so as to solve the problem that the brake shoe of the existing drum brake cannot be opened radially, and further solve the problem of uneven wear of the friction plate and brake noise. , dragging, gnawing and locking problems

Method used

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Embodiment Construction

[0016] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0017] like Figures 1 to 5 Shown, drum brake of the present invention comprises:

[0018] Brake drum 4.

[0019] A pair of brake shoes 3 are disposed inside the brake drum 4 facing each other.

[0020] The friction plate 5 is arranged on the brake shoe 3 and is in contact with the brake drum 4 when the brake is applied. The friction plate 5 can be arranged on the brake shoe 3 by bonding, riveting, screwing and other methods.

[0021] A driving device arranged at one end of the brake shoe. In this embodiment, the driving device is a cam 1 and a roller 2 cooperating with the cam 1. Those skilled in the art can also use any other suitable driving device according to specific needs, such as a wheel cylinder and the like.

[0022] a bushing arranged in one end hole of the brake shoe, the brake shoe can be rotated around the bushing arranged i...

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Abstract

The invention relates to a drum brake which aims to solve the problem that a brake shoe of the conventional drum brake can not be radially expanded, and further solve the problems of brake noise, dragging, squeal and locking. The technical scheme of the invention is as follows: the drum brake comprises a brake drum (4), a brake shoe (3), a friction plate (5), a driving device, a lining (6), a shoe plate shaft (7), and a reset device; the drum brake is characterized in that an outline with a certain guiding function is arranged on a part on which the shoe plate shaft is matched with the lining, and the guiding outline is arranged in a brake radial direction along which the brake shoe can be radially expanded, and the lining can slide with the brake shoe along the guiding outline of the shoe plate shaft, but can not rotate around the shoe plate shaft, and the brake shoe can rotate around the lining arranged in an end hole. The drum brake provided by the invention has the advantages that the drum brake is simple and easy, the drum brake can effectively solve the problems of uneven abrasion of the friction plate, brake noise, dragging, squeal and locking, meanwhile, and the drum brake has large brake torque.

Description

technical field [0001] The invention relates to a brake, in particular to a drum brake. Background technique [0002] In the invention patent application published on October 7, 2009, the publication number is CN101550974, and the name is 'air pressure flexible drum brake', a drum brake is disclosed. Waist-shaped) bushings are arranged radially so that the brake shoes can be opened radially during braking, and the friction lining is in full contact with the brake drum, so that the friction lining wears evenly and eliminates brake noise, dragging, and hair loss. Nibbling and hugging phenomenon. [0003] The drum brakes are pre-set radially of the bushings. When braking, the driving end of the brake shoe first moves outward, and the movement of the whole brake shoe is shown as the rotation around the shaft end of the shoe. As the brake shoe rotates, the bushing that is pre-set radially on it deviates from the Radially, therefore, in fact, the brake shoes cannot be opened ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D51/22F16D65/09
Inventor 王庭义
Owner BEIJING TINGYI BRAKING CO LTD
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