| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a damper device with a function for effectively preventing leakage of filled viscous fluid, while the outside diameter thereof is minimized. <P>SOLUTION: The damper device includes: a cylindrical inner part 1; an outer part 2 having a closed-end annular space 25 capable of accommodating the inner part 1 rotatably or relatively rotatably from the cylinder one end 11 side; and the viscous fluid 3 filled into the annular space 25. A circumferential groove 13 in which an outer seal ring 4 is fitted is formed on the outer side of the inner part 1, and a circumferential stepped surface 14 for positioning an inner seal ring 5 is formed while being located on the cylinder one end 11 side from the circumferential groove 13, on the inner side of the inner part 1. The depth of the circumferential groove 13 is substantially half the wall thickness of the inner part 1 at the position at which the circumferential groove 13 is formed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
