Patent ID: 8109833
Filing Date: 2012-02-07
Classification: F16D

Abstract:
1. A power unit provided with a torque damper for absorbing excessive torque occurring in a torque transmission path between a drive rotating shaft and a driven rotating shaft, the torque damper including an input member adapted to receive torque of the drive rotating shaft and an output member adapted to transmit torque from the input member to the driven rotating member and absorbing the excessive torque by relative rotation between the input member and the output member, wherein: the driven rotating shaft is rotatably supported by a pair of bearings; an input rotating body applying the torque of the drive rotating shaft to the input member is provided on the input member rotatably supported by the driven rotating shaft; the output member is spline-fitted to the driven rotating shaft so that the output member and the driven rotating shaft are rotated integrally; in the torque damper, a torque-absorbing portion for absorbing the excessive torque is composed of an input damper portion of the input member and an output damper portion of the output member, and the torque-absorbing portion is disposed between the pair of bearings in an axial direction of the driven rotating shaft; and one of the bearings is disposed between the input damper portion and the input rotating body in the axial direction.