Patent ID: 9517754
Filing Date: 2016-12-13
CPC Classification: B60T

Claim Text:
1. An electric parking brake control device that controls an electric actuator that drives an electric parking brake, the electric parking brake control device comprising: lock control means that performs lock control for moving a friction-applying member to a locked position at which a predetermined braking force is generated, by actuating the electric actuator such that, in the electric parking brake, the friction-applying member is pushed against a friction applied member; release control means that performs release control for moving the friction-applying member to a released position in which the friction-applying member is separated from the friction-applied member, at a time when the electric parking brake is not actuated; accelerator release control means that performs accelerator release control for moving the friction-applying member to a standby position when a vehicle starting operation is performed, the standby position being positioned between the locked position and the released position such that the friction-applying member moves caused by operation of the electric actuator from the standby position to the locked position within a time which is shorter than a time required to move from the released position to the locked position; and non-necessity confirmation determining means for determining whether it is unnecessary to maintain the standby position, based on whether a state in which a vehicle speed, which is a speed of the vehicle, exceeds a specific speed threshold value is maintained for a predetermined period of time, wherein the release control is performed when the non-necessity confirmation determining means determines that it is unnecessary to maintain the standby position, the electric actuator generates a brake force by causing a nut to contact a piston such that the friction-applying member is pressed against the friction-applied member, and the standby position is a position at which a brake force of the electric parking brake is not generated, and a clearance between the piston and the nut in the standby position is smaller than a clearance between the piston and the nut in the release position.