Four-piston fixed drum brake assembly

Abstract

The invention discloses a four-piston fixed drum brake assembly. The four-piston fixed drum brake assembly comprises a four-piston fixed cylinder body, a sealing base, a dustproof plate, a deflation valve, a copper washer, pistons, a friction plate, a hub bearing and a brake drum, wherein the sealing base and the dustproof plate are mounted on the four-piston fixed cylinder body; the deflation valve is mounted on the sealing base; the copper washer is mounted on the four-piston fixed cylinder body; the pistons are mounted on the four-piston fixed cylinder body; the friction plate is mounted onthe pistons; the hub bearing is mounted on the sealing base; and the brake drum is mounted on the hub bearing. The brake cylinder body is of a four-piston fixed type, the brake efficiency is high, piston return is stable, and the pedal stroke can be effectively shortened; and the brake assembly is small in size and space and convenient to arrange, the brake cylinder body is of a four-piston fixedtype, the brake efficiency is high, piston return is stable, and the pedal stroke can be effectively shortened.

Description

technical field [0001] The invention relates to the field of drum brakes, in particular to a four-piston fixed drum brake assembly. Background technique [0002] With the development of technology in the automobile industry and the intensification of market competition, high-performance, low-cost products have become the ultimate goal pursued by every automobile company. As far as the braking system is concerned, the best comprehensive performance should be the fixed disc brake, but because of its high price, it can only be applied to some luxury models; the floating disc brake is relatively cheap, but due to its floating characteristics, There are often problems such as weak first pedal, abnormal noise on bumpy roads, eccentric wear of the friction plate, and dragging. At the same time, due to the large radial and axial dimensions of the floating disc brake, it has a certain impact on the layout of the wheels, steering and suspension. Drum brakes are the cheapest, small in...

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Problems solved by technology

[0003] The invention provides a four-piston fixed drum brake assembly, the brake cylinder body is four-piston fixed, the braking efficiency is high, the piston return is stable, the pedal stroke can be effectively shortened, and the existing three major types of brakes are solved. Brakes (fixed disc brakes, floating disc brakes, floating drum brakes) have inherent technical problems such as high cost, large space size, and poor performance

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