| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a power transmission mechanism hardly generating negative torque at a device side even when large torque fluctuates as an outside drive source side. SOLUTION: During power transmission between a pulley 32 at an engine E side and a bearing member 35 at a compressor side, a power transmission arm 42 is elastically deformed by receiving force based on the transmission torque, the posture of an engaging recess part 43 is allowed to be changed to the bearing member 35, and relative rotation in the range of a prescribed angle between the pulley 32 and the bearing member 35 accompanied by the sliding of a roller 39 in the engaging recess part 43. When transmission torque is zero, the roller 39 is contacted at an intermediate position not inclined in the peripheral direction of the pulley 32 to the sliding face 43a of the engaging recess part 43. The sliding face 43a of the engaging recess part 43 is made a shape gradually enlarging an inclination angle in the peripheral direction of the pulley 32 is it is separated from a neutral position.</p> |
