Patent ID: 6923725
Filing Date: 2005-08-02
Classification: F16F

Abstract:
1. A torque fluctuation absorber comprising: a flywheel fixed to a drive shaft for transmitting a driving force from a power source via the drive shaft; a damper mechanism provided on the flywheel and having a limiter portion adapted to interrupt torque transmission between the drive shaft and an input shaft when torque fluctuation between the drive shaft and the input shaft reaches a predetermined level, the limiter portion including a frictional member directly or indirectly frictionally engaged with the flywheel and connected to an input shaft of a transmission; a supporting mechanism supporting the frictional member of the limiter portion in an axial direction of the drive shaft to provide the frictional engagement of the frictional member before the damper mechanism is assembled to the flywheel; the supporting mechanism comprising an annular member fixed to the flywheel for covering a radially external peripheral surface of the limiter portion and having an extended portion extended in a radially inward direction and a supporting plate fixed to the annular member for supporting the frictional member in the axial direction between the extended portion and the supporting plate; and the limiter portion of the damper mechanism including the frictional member provided on one side of a disc in the axial direction and another frictional member provided on an opposite side of the disc, a limiter plate provided between the frictional member provided on the flywheel side in the axial direction and the extended portion, and a biasing member provided between the limiter plate and the extended portion for biasing the limiter plate away from the flywheel.