| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that, because a bush does not rotate with respect to an eccentric shaft, the bush near in the maximum eccentric direction partially contacts with an eccentric shaft bearing.SOLUTION: A slide ring 30 is fitted over the outer periphery of an eccentric shaft 14a with a small gap. The slide ring 30 slides without being fixed in one direction with respect to the eccentric shaft 14a. Because a position supported by an eccentric shaft bearing 43 moves over the entire periphery without being partially fixed, so that the position is not locally supported by the eccentric bearing 43. Accordingly, reliability is improved. |
