PISTON RETURN STRUCTURE OF BRAKE CALIPERS

Disclosed in the present invention is a piston return structure of brake calipers, the structure comprising a brake plate, an auxiliary assembly plate, a connecting bridge plate and a main assembly plate. The present invention has the following beneficial effects: an impeller driven along with the jacking of an oil circuit is arranged in the main assembly plate, the impeller can drive a gear, which is capable of accumulating power, to rotate, and then the gear drives a rack and an ejector rod to carry out auxiliary pulling for piston ejection and return, so that a piston of an apparatus can better return for use, and the apparatus can better avoid the inconvenience of contact, which is caused by insufficient return, between a brake pad and a brake disc after braking is disabled; and an oil filtering device is arranged in the jacking oil circuit of the main assembly plate, and is provided with upper and lower filter tanks, and anti-return passing oil filter covers that can be opened by jacking are arranged at