| 摘要 |
PROBLEM TO BE SOLVED: To provide a power transmission mechanism capable of preventing an occurrence of a noise and oscillation in the condition that power transmission is blocked certainly. SOLUTION: A connect plate 11 is put on a guide groove 9a of a guide plate 9 fixed to the 2nd rotation member 7 so as to move freely only toward a radius direction. Also, a pressed face of the connect plate 11 is attached to a connection face 6a of a cam operation face 6 that is provided in the 1st rotation member 3, and a liner part of the connect plate 11 is held and inserted between a holding part 12a of a holding plate 12 and a bottom part of the guide groove 9a of the guide plate 9. The connect plate 11 is moved to the inside of a radius direction, as the pressed face is pushed by a pressing face 6b of the cam operation face 6 when overloaded to a rotating shaft. Also the connect plate 11 is put between the holding part 12a of the holding plate 12 and the bottom of the guide groove 9a of the guide plate 9 even after it is moved.
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