| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electrically-powered brake device that can prevent a piston from falling when the piston is axially driven. <P>SOLUTION: In the electrically-powered brake device, which generates brake fluid pressure by axially driving a second slave piston 88a by a drive force of a motor, an annular guide piston 230, which liquid-tightly seals a part between an outer peripheral surface of the second slave piston 88a and a drive force transmission mechanism 74 and which guides the second slave piston 88a in such a manner as to be movable with respect to the axial direction of the second slave piston 88a, is arranged in the state of facing the outer peripheral surface of the second slave piston 88a. <P>COPYRIGHT: (C)2013,JPO&INPIT |
