Oil-electric hybrid brake device

Abstract

The invention belongs to the technical field of brake actuators, and particularly relates to an oil-electric hybrid brake device. The brake device comprises a caliper frame and a caliper body connected with the caliper frame in a sliding mode; a jaw capable of accommodating a brake disc is arranged in the caliper body; friction plates, namely a first friction plate and a second friction plate, are arranged on the caliper body and located on the two sides of the jaw respectively, and a hydraulic driving device and an electric driving device are oppositely arranged on the caliper frame and located on the two sides of the caliper body; and the hydraulic driving device can push the first friction plate to move in the direction close to the second friction plate, and the electric driving device can push the second friction plate to move in the direction close to the first friction plate. The braking response time is shortened, the braking force is improved, and the defect that the braking response speed and the braking force of a traditional EPB cannot be considered at the same time is effectively overcome. Meanwhile, the oil-electric hybrid brake device has double functions of driving braking and parking braking, and the advantages of being good in braking stability, small in occupied space and the like.

Description

technical field [0001] The invention belongs to the technical field of brake actuators, and in particular relates to an oil-electric hybrid brake device. Background technique [0002] Most of the current electronic parking systems (EPB) of motor vehicles use integrated calipers. The braking (service braking) of the integrated caliper during the running of the motor vehicle is to hydraulically squeeze the friction plate and the friction of the brake disc to provide a large braking force, so that the speed of the motor vehicle drops rapidly; when the motor vehicle stops The special braking (parking brake) is to squeeze the friction plate and the brake disc friction through the electronic parking actuator, so as to prevent the vehicle from moving or sliding on the slope. [0003] We found in the course of practice and research that the existing EPB has some insurmountable defects due to the limitation of its structural layout and working method. In the non-braking state, ther...

AI Technical Summary

Problems solved by technology

Under the condition of a certain power of the hydraulic power source, the travel speed of the friction disc is inversely related to the extrusion force, so in order to ensure sufficient extrusion force, the travel speed of the friction disc is greatly restricted, correspondingly there will be long additional response time

In order to shorten the additional response time, the power of the hydraulic power source can be increased, but this will greatly increase the cost and size of the hydraulic power source

Images