ACTUATOR FOR ELECTRICAL PARKING BRAKE SYSTEM

摘要

The present invention relates to an actuator for an electrical parking brake system, which can decrease the number of components and reduce noise generated in an operation of the actuator. To achieve this, provided is the actuator for an electrical parking brake system, which comprises: a case; a motor installed in the case to provide power; a driving gear provided to a rotational shaft of the motor; a pair of transmission members installed inside the case to reduce torque of the driving gear and transmit the reduced torque; and an output gear provided to an output shaft to additionally reduce the torque transmitted through the transmission members, and outputted through the output shaft.