Patent ID: 8863920

Claim:
An electronic parking brake which has a drum rotating together with a wheel of a vehicle and first and second brake shoes installed at both sides of the inside of the drum to brake the drum, and pushes the first and second brake shoes to the inner surface of the drum to perform braking operation, the electronic parking brake comprising: a motor rotated in normal and reverse directions and generating driving force for braking; a cycloid reducer connected to a rotary shaft of the motor and amplifying the driving force generated from the motor; a spindle member connected to the cycloid reducer and rotated; a spur gear assembly rotated by rotary force transmitted from the spindle member; a piston rotated and provided with the outer circumferential surface on which one gear of the spur gear assembly is integrally formed; and a push rod unit installed at both ends of the piston in the longitudinal direction, rectilinearly moved according to rotation of the piston, and supported by the first and second brake shoes.