| 摘要 |
PROBLEM TO BE SOLVED: To provide a phase shift allowance power transmission mechanism which allows phase shift between a gear and a gear shaft of the gear while allows transmission of power.SOLUTION: A phase shift allowance power transmission mechanism includes a rotation allowance mechanism 190A which is mounted between a gear 20 and a gear shaft 20a supporting the gear 20, and allows the rotation of the gear 20 with respect to the gear shaft 20a within a defined range; and an energization mechanism 190B which energizes the gear 20 toward a phase position as a reference with respect to the gear shaft 20a. The rotation allowance mechanism 190A includes a key member 191 and a key groove 20d. The energization mechanism 190B includes an energization member which energizes a key part 191 toward a neutral position of the key groove 20d. The energization member includes a C-shaped elastic member 193 and a pin type lock member 194. As the lock member 194, a spring pin having a slit which can elastically expand and shrink the diameter is employed.SELECTED DRAWING: Figure 14 |
