| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fluid pressure apparatus improving sealing performance between a cylindrical room and a cylindrical body axially sliding while dividing the inside of the cylindrical body into an operating fluid filling portion and an operating air filling portion, on a dynamic O-ring groove side only by using a dynamic O-ring. <P>SOLUTION: This fluid pressure apparatus is provided with an arc-shaped surface R1 only on the groove side surface on the operating fluid filling portion side of the dynamic O-ring groove 5 as shown in Fig.2(a). The cross-sectional area SA on the operating fluid filling portion side is made larger than the cross-sectional area SB on the operating air filling portion side. <P>COPYRIGHT: (C)2009,JPO&INPIT |
