| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent deterioration of a seal member by reducing a load to be applied to the seal member that seals the inside of a cylinder tube in an airtight manner. <P>SOLUTION: The hydraulic damper 1 includes a cylinder tube 11 having an oil chamber to be filled with silicon oil as a working fluid, a rod 12 on which a load is input from one end side, a piston 15 connected to the other end side of the rod 12, housed in the chamber, compressing the silicon oil in the chamber corresponding to the load input to the rod 12 and reciprocating in the chamber. The chamber includes a section having an inner diameter approximately equal to a diameter of the piston 15 so that the piston 15 may reciprocate while sliding on the inner peripheral face, and a section formed outside the range where the piston 15 reciprocates and having an inner diameter larger than the diameter of the piston 15. <P>COPYRIGHT: (C)2012,JPO&INPIT |
