| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enable smooth sliding of a piston by suppressing adhesion of the piston of a plunger type master cylinder constituted so that the piston for receiving an input is directly slidably guided to a cylinder body and slides on the inner periphery of a cup held by the cylinder body. <P>SOLUTION: Slide guiding sections 22a and 22b of a primary piston 2 for receiving the input are disposed in the cylinder inner surface between a primary cup 11 and a secondary cup 12 held by the cylinder body 1, circumferential grooves are disposed in the slide guiding sections 22a and 22b, and the sliding surface is lubricated by brake fluid introduced into the circumferential grooves. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
