| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve problems wherein deterioration with age is intense, elastic restoration property is eliminated, thereby rotating an O-ring easily, and the O-ring is likely to split, thereby performing not its essential action, because the O-ring is always compressed by a cylindrical body and an outer cylinder, although friction action is always given to the cylinderical body and the outer cylinder by the O-ring to prevent unexpected rotation. <P>SOLUTION: This rotation device is constituted in such a way that engaging parts are formed in slide parts of both of a first shaft body and a second shaft body rotating relatively and the number of these engaging parts differs. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
