Drum brake type electric parking brake apparatus

A drum brake type electric parking brake apparatus comprising:

• a knuckle, configured to perform as a suspension of a vehicle;
• 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;
• 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 separately provided from the backing plate,
• the electric actuator unit is arranged at an inner-side surface of the knuckle and the backing plate is arranged at an outer-side surface of the knuckle, and
• the backing plate and the electric actuator unit are supported and fixed to the knuckle.