| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electric braking device that can ensure that a screw stably abuts on a piston. <P>SOLUTION: In the electric braking device, which generates brake fluid pressure by axially driving a second slave piston 88a by a drive force of a motor, a drive force transmission mechanism 74 for transmitting the drive force of the motor includes a nut 80c that is rotated by receiving a rotary drive force of the motor, and a ball screw shaft 80a that is provided in an axially movable manner by being engaged with the nut 80c and that abuts on the second slave piston 88a; and a wear reducing means for reducing wear of a contact part between the ball screw shaft 80a and the second slave piston 88a is provided. <P>COPYRIGHT: (C)2013,JPO&INPIT |
