| 摘要 |
PROBLEM TO BE SOLVED: To provide a drive amount change mechanism in a crank type drive device in which an adjustment of an eccentric amount of the second supporting member [holder] in respect to the first supporting member [crank hub] and a position setting of the second supporting member in respect to the first member at an intermediate position can be easily carried out.SOLUTION: This invention comprises a supporting part arranged fixedly at one of the first supporting member 22 and the second supporting member 24 and a position adjusting member 42 supported at the supporting part and arranged to be abutted against a plane extending in a direction crossing with an eccentric direction at the other of the first supporting member 22 and the second supporting member 22, the position adjusting member 42 is rotated against the supporting part, a position ranging from the supporting part to an abutting position of the other supporting member at the position adjusting member 42 is changed, and a relative position in the eccentric direction between the first supporting member 22 and the second supporting member 24 is changed.SELECTED DRAWING: Figure 4 |
