| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a check valve easy to machine and assemble, having simple construction for preventing the come-off of a seat member. <P>SOLUTION: The check valve comprises a valve body 70 having communication oil paths 71a, 71b and a fitting recess 72, the seat member 73 having a fitted protrusion 75 to be fitted into the fitting recess and an arrangement space 74 and a check ball 76 and a spring 77 arranged in the arrangement space in the state of the fitted protrusion being fitted into the fitting recess. The check ball is thrust by the spring to block an opening portion 71c of the communication oil path 71b. The fitting recess 72 has a recess diameter reduced portion 72a on the inner peripheral face and the fitted protrusion has a protrusion diameter reduced portion 75a on the outer peripheral face. The protrusion diameter reduced portion is pressed into the fitting recess to fit and receive the recess diameter reduced portion, resulting in the fitted protrusion to be fitted into the fitting recess. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
