Braking pliers with parking brake

Abstract

The invention provides brake tongs with a vehicle brake, and belongs to the technical field of an automobile machine. The invention solves the problems that the prior brake tongs are difficult to be processed and assembled, and the closing ring fixing the spring seat tears the wall of the piston hole to cause leakage. The brake tongs having the vehicle brake comprises a tongs body, a rocking arm, a retaining piece and a piston which can push the retaining piece to brake. A multiple-threaded screw enclosed with a multiple-threaded sleeve is arranged between the rocking arm and the piston. One end face of the multiple-threaded sleeve leans against the piston; and a transmission mechanism is arranged between the other end and the rocking arm. The tongs body is of split structure, and consists of a main tong body and a secondary tong body permanently connected with the main tong body. The multiple-threaded screw is threaded in the main tong body and the secondary tong body. The piston is arranged in the main tong body. The rocking arm is arranged on one side of the secondary tong body. The multiple-threaded screw inside the secondary tong body is enclosed with a return spring with both ends acting on the main tongs body and the multiple-threaded screw, respectively. The brake tongs with the vehicle brake have the characteristics of automatic compensation for the clearance resulting from abrasion of the retaining piece, easy assembling and simple structure.

Description

technical field [0001] The invention belongs to the technical field of automobile machinery and relates to a brake caliper, in particular to a brake caliper with a parking brake. Background technique [0002] Known brake caliper with parking brake that uses all has automatically compensated the gap between brake pad wear and brake disc, as Chinese patent application number is 200310110216.5 and is called "disc brake with parking brake" Ejection and Compensation Mechanism", which discloses a piston, a cylinder body, a friction plate screw, a rectangular nut, an elastic element, a rotating shaft, etc., wherein the rotating shaft can rotate but cannot move axially, and the extended end of the rotating shaft is connected with the external brake Pull wire connection, one end of the rotating shaft with a lead screw extends into the cylinder and the piston, the part of the rotating shaft with the lead screw is screwed with the rectangular nut, and a bearing and an elastic element a...

AI Technical Summary

Problems solved by technology

[0005] This kind of brake caliper can automatically compensate the gap after the brake block is worn out, but the brake caliper with parking brake also has the following disadvantages: one is the cylinder body is an integrated structure, therefore, the cylinder used to hold the piston The hole needs to be machined deeper, which increases the difficulty of processing; the second is that because the piston hole is relatively deep, the anti-rotation pin is used to fix the steel ball seat and the pin hole needs to be found by perception, which increases the difficulty of assembly; The ring can only be assembled in the cylinder, so it is easy to scratch the wall of the piston hole and cause leakage

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