Actuator for parking brake

An actuator for a parking brake of a vehicle, comprising:

• a motor configured to generate a power;
• a reduction gear portion configured to transmit the power of the motor to the parking braking of the vehicle;
• a locking portion configured to limit rotation of the reduction gear portion;
• and
• a housing in which the motor, the reduction gear portion, and the locking portion are accommodated;
• wherein the locking portion comprises:
• a lock gear coupled to the reduction gear portion so as to rotate together,
• a lever configured to controllably engage with the lock gear through a hinge motion,
• an elastic member configured to push the lever toward the lock gear, and
• an electromagnet member configured to controllably generate an electromagnetic force when the power generated by the motor is applied so as to separate the lever from the lock gear,
• wherein the electromagnet member comprises a coil wrapped around one or more rods that protrude from the electromagnet member toward the lever.