Electric braking device for vehicle

An electric braking device for a vehicle comprising:

• an electric motor generating power;
• a pressing member pressing a friction member against a rotating member integrally rotating together with a wheel of the vehicle;
• a power transmitting mechanism configured to transmit the power generated by the electric motor to the pressing member and cause pressing force to be generated by the pressing member with respect to the friction member;
• a lock mechanism which includes an engaged part integrally moving together with a power transmitting member included in the power transmitting mechanism and an engaging member selectively moving to an engageable position where the engaging member can be engaged with the engaged part and a non-engageable position where the engaging member cannot be engaged with the engaged part and achieves a locked state in which the engaging member is engaged with the engaged part and the power transmitting member is not able to move in a reducing direction of the pressing force;
• and
• a controller configured to control a power supply amount for the electric motor and a position of the engaging member, wherein
• the controller is configured such that,
• when the locked state is achieved in a state in which the pressing member presses the friction member, the controller moves the engaging member from the non-engageable position to the engageable position, and performs supplied power amount reduction control for reducing the power supply amount for the electric motor in a state in which the engaging member is kept at the engageable position to move the power transmitting member in the reducing direction of the pressing force so as to engage the engaging member with the engaged part, and
• the controller is configured such that,
• when the controller performs the supplied power amount reduction control, the controller reduces the power supply amount to have a first period in which the power supply amount reduces at a first gradient and a second period in which, after the first period, the power supply amount reduces at a second gradient smaller than the first gradient.