Brake caliper having hydraulic parking function

Abstract

The invention discloses a brake caliper having a hydraulic parking function. The brake caliper comprises a brake caliper body, a sealing ring, a parking piston, a parking push rod, a reset compression spring, a parking ejector rod, a driving piston and a brake block, wherein the driving piston has contact with the brake block; a driving brake chamber, a parking brake chamber and a parking release chamber are arranged in the brake caliper body; the parking piston is used for isolating the parking brake chamber from the parking release chamber; the parking push rod is movably arranged at the upper end opening of the parking brake chamber; a self-locking oblique wedge surface is arranged between one end of the parking push rod and the parking piston; the driving piston is arranged at the lower end opening of the driving brake chamber; the other end of the parking push rod is connected one end of the parking ejector rod by passing through the reset compression spring; a conical surface of the other end of the parking ejector rod has contact with the contact surface of the driving piston; a driving brake oil inlet is formed in the wall of the driving brake chamber; a parking brake oil inlet is formed in the wall of the parking brake chamber; a parking release oil inlet is formed in the wall of the parking release chamber. The brake caliper disclosed by the invention can be conveniently arranged in an overall automobile and is low in product cost.

Description

technical field [0001] The invention relates to a parking brake system in a motor vehicle, in particular to a brake caliper with a hydraulic parking function. Background technique [0002] The parking brake caliper of the prior art mainly contains two methods: the first is a brake caliper with a parking function using a drag cable as an input medium, see Patent Nos. CN03252989 and CN200620069768 for details; As the power, a brake caliper that uses a motor to drive a deceleration mechanism to realize the parking function, see Patent No. CN201010551103 for details. The first type has the disadvantage of difficulty in arranging the cables in the vehicle, while the second type has the disadvantage of high product cost. Contents of the invention [0003] In view of the above defects in the prior art, the object of the present invention is to provide a brake caliper with hydraulic parking function which is convenient to arrange in the vehicle and has low product cost. [0004]...

Images