Double-adjusting-gap brake caliper with parking mechanism

Abstract

The invention discloses a double-adjusting-gap brake caliper with a parking mechanism. The brake caliper comprises a caliper body; a piston movable cavity is formed in the caliper body; a piston is arranged in the piston movable cavity; an automatic gap adjustment mechanism is arranged in a storage groove of the piston; the part, located at the right end of the piston movable cavity, of the caliper body is provided with a first caliper cavity; a circlip for a hole, a first sealing ring, a screw, a push rod and an eccentric shaft are sequentially arranged in the first caliper cavity from the left to the right; a caliper body hole is formed in the part, located at the upper right portion of the caliper body cavity, of the caliper body; an adjustment shaft, a washer and a screw plug are sequentially arranged in the caliper body hole from left to right; the automatic gap adjustment mechanism comprises a torsion spring, a screw sleeve, a limiting sleeve, a split washer, a limiting retainerring, a limiting gear ring, a rotating pin and a spring piece; and under the action of spring force of the torsion spring, the rotating pin is enabled to approach an oblique groove in the limiting sleeve, so that the gap is automatically adjusted. The brake caliper is reasonable in structure arrangement, compact in structure, small in size and mechanical in gap adjustment, sealing links are reduced, the reliability is improved, and the practicality is good.

Description

technical field [0001] The invention relates to the technical field of automobile braking, in particular to a brake caliper of a double-gap band parking mechanism. Background technique [0002] The brake caliper is one of the executive components of the automobile braking system. When the service brake is performed, the brake pedal is depressed, and the hydraulic pressure output from the master cylinder is transmitted to the brake caliper through the pipeline, which pushes the piston and the friction pad to clamp the brake disc. (The brake disc and the wheels rotate together when the vehicle is running) to realize the vehicle service braking. When the vehicle stops and needs parking brake, pull up the handbrake handle, drive the parking pull arm to rotate through the brake cable, and the eccentric shaft on the pull arm assembly makes the push rod move forward. The principle is the same as that of the cam and push rod structure. The principle is the same, the push screw driv...

AI Technical Summary

Problems solved by technology

At present, the widely used automatic gap adjustment mechanism is the principle that the screw sleeve rotates under the action of hydraulic pressure to adjust the gap. In the prior art, the use of the screw sleeve to rotate under the action of hydraulic pressure requires a large space size, and the diameter of the cylinder is below 32mm. Do not apply on brake caliper piston

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