Novel EPB parking structure

Abstract

The invention discloses a novel EPB parking structure. A turbine worm power head is mounted on the exterior of a clamp body, and a self-sleeve structure is coaxially connected with a self-adjusting shaft; the self-adjusting shaft extends into the clamp body and is connected with a self-adjusting base through an angled ballistic structure, the self-adjusting base is coaxially connected with a screwsleeve, the screw sleeve sleeves a screw rod through a thread, the screw rod is fixedly mounted in an inner hole of a piston, the piston is internally provided with an inner friction block, and the clamp body is provided with an outer friction block; a fixed frame is fixed to the portion, outside the screw sleeve, of the clamp body, the screw sleeve is provided with a return spring, and the return spring is separately connected to an outer flange step of the screw sleeve and the fixed frame; a second hole retaining ring is fixed in the inner hole of the piston, the screw rod is provided witha step, a conical spring is sleeved between the screw rod and the piston, and the two ends of the conical spring are connected to the step of the screw rod and the second hole retaining ring. According to the EPB parking structure, the piston is pushed to move forward through a force-increasing mechanism to achieve parking, the self-adjusting mechanism is utilized to perform self-adjustment of gaps, the input torque of an EPB under equivalent conditions of parking on a slope can be reduced, and the parking response time is shortened.

Description

technical field [0001] The present invention relates to an EPB structure, in particular to a novel EPB (Electromemechanical Parking Brake Caliper, EPB for short, electronic parking brake caliper) parking structure. Background technique [0002] At present, the motor-integrated EPB parking brake caliper has been widely used in mid-to-high-end passenger vehicles. Traditional passenger cars are powered by fuel engines, and there is a time difference between the power output from the engine and the wheels when starting. With the popularization of electric vehicles, the transmission time between the motor and the wheels is basically synchronized, and the release of the parking caliper lags behind when starting. When stepping on the electric accelerator, the problem of no response or uneven start appears. [0003] Conventional EPB pushes the piston through the thread pair, the pitch is about 1.2mm (the piston needs to rotate 1 circle to move forward 1.2mm), and there is no booste...

AI Technical Summary

Problems solved by technology

The disadvantage of this structure is that the EPB needs to input a large torque and the parking response time is long

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