MOTIVE POWER TRANSMITTING MECHANISM

摘要

PROBLEM TO BE SOLVED: To provide an inexpensively manufacturable motive power transmitting mechanism having the spiral spring constitution. SOLUTION: In a spiral spring 50, an outside end part of a spiral part 50c is engaged with a rotor 41 on the vehicle engine 21 side, and an inside end part of the spiral part 50c is engaged with a rotary shaft 16 on the compressor side. Even when load torque generated on the compressor side is changed when transmitting motive power to a compressor from a vehicle engine 21, this change is relieved when the rotor 41 and the rotary shaft 16 relatively rotate by torsional deformation of the spiral part 50c of the spiral spring 50. In the spiral spring 50, plural plate-like bodies 47 being a spiral shape are arranged in a row in the axial L direction.