Precision full-floating drum brake

A drum brake and full-floating technology, which is applied in the direction of mechanically driven drum brakes and brake parts, can solve problems such as uneven friction surfaces, improve driving safety, achieve better braking effects, and prolong service life. Effect
CN101893046AInactive Publication Date: 2010-11-24杨群英
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
杨群英
Publication Date
2010-11-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a precision full-floating drum brake and aims to improve the relation between a brake baseplate and a brake shoe. An improved clamp connection part of the brake baseplate consists of an upper layer splint and a lower layer splint between which a gap is formed, wherein corresponding positions of the upper layer splint and the lower layer splint of the clamp connection part are provided with a pair of elliptical positioning holes with certain gaps between upper and lower ends; taking the circle center of the brake soleplate as a reference central point, the positioning hole on a left side deflects inwards and forms an included angle of between 16 and 45 degrees with the central point; and the positioning hole on a right side deflects outwards and forms an included angle of between 46 and 83 degrees with the central point. The invention provides the drum brake with precise floating quantity. The brake has the advantages of making friction between a friction plate and the brake drum uniform, prolonging the service life of the friction plate and the brake, ensuring more reliable braking, high braking efficiency, and more comfortable driving, and enhancing driving safety.
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Description

technical field

[0001] The invention relates to a brake used for automobiles, in particular to a precision full-floating drum brake. Background technique

[0002] The traditional drum brake is mainly composed of brake base plate, brake drum, brake shoe, wheel cylinder or camshaft, return spring, positioning pin and other components. The brake bottom plate is installed on the fixed position of the axle, such as: the front and rear axle housings, which are fixed, and are equipped with brake shoes, camshafts or wheel cylinders and other expansion devices, return springs, and support pins to withstand braking. rotation torque. Each brake drum has a pair of brake shoes, and friction discs are inlaid on the brake shoes. The brake drum is installed on the hub wheel rotation shaft (the output half shaft of the bridge), and is a part that rotates with the wheel. It is made of a certain amount of cast iron and is shaped like a drum. When braking, the wheel cylinder piston or the ca...

Claims

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