| 摘要 |
PROBLEM TO BE SOLVED: To perform an effective prevention of occurrence of a belt slip caused by a rotational fluctuation at a rotational fluctuation absorption damper pulley for transmitting a torque while absorbing the rotational fluctuation.SOLUTION: There are provided an inner peripheral member 3 and a pulley part 5 arranged at its outer peripheral side through a radial bearing 4 in such a way that it can be rotated relatively and displaced relatively and axially to each other and a transmittance belt is wound around the outer peripheral surface. Each of the inner peripheral member 3 and the pulley part 5 is formed with end surfaces axially opposite to each other. Between the opposing end surfaces are provided thrust bearings 6, 9 and an axial biasing member 8 for pushing the thrust bearings 6, 9 against one of the opposing end surfaces. A sum of slip torque of the radial bearing 4 and a slip torque applied to the thrust bearings 6, 9 by the axial biasing member 8 is set to be smaller than a slip torque between the transmittance belt and the pulley part 5. |
