Patent attributes
A torque fluctuation damper pulley 10 is provided with a torque fluctuation damping elastic member 15 between a hub 11 attached to a rotational shaft and a pulley member 13. The torque fluctuation damping elastic member 15 includes a pair of rubber members 15A and 15B which sandwich a support portion 24 of the pulley member 13 under equal elastic forces from the front and rear in the axial direction of the pulley member 13 to joint the hub with the pulley member 13 elastically. Thus, the pulley member 13 always has equal forces being applied thereto from the front and rear in the axial direction, so that it becomes possible to make unnecessary any thrust bearing which would otherwise be required for positioning the pulley member 13 in the axial direction.
