Patent ID: 9440626
Filing Date: 2016-09-13
CPC Classification: B60T,F16D

Claim Text:
1. A drum brake electric parking brake apparatus comprising: a knuckle, configured to perform as a suspension of a vehicle, formed with a concave portion at an inner-side surface thereof; a backing plate, supported and fixed to the knuckle; a pair of brake shoes, supported to an outer-side surface of the backing plate, and configured to be displaced in a direction in which the brake shoes are separated from each other; a drum, provided to surround the brake shoes, and configured to rotate together with a wheel that is rotatably supported to an outer-side surface of the knuckle; an anchor, fixed between one end portions of the brake shoes in a circumferential direction of the drum at a part of the outer-side surface of the backing plate, and configured to receive a brake torque applied to the brake shoes due to a friction between linings of the brake shoes and an inner circumferential surface of the drum; and an electric actuator unit, including an electric motor and a decelerator, and configured to expand a gap between the one end portions of the brake shoes based on activation of the electric motor, wherein the electric actuator unit is supported and fixed to the inner-side surface of the knuckle and the knuckle is entirely arranged at an inner-side surface of the backing plate such that the electric actuator unit is not directly fixed to the backing plate, the backing plate and the knuckle are formed with respective first through holes through which a fixing member is inserted to fix the backing plate to the knuckle, and the first through holes are disposed at a bottom surface of the concave portion.