Patent ID: 8628425

Claim:
A torque fluctuation absorber, comprising: a damper portion arranged on a power transmission path from an output shaft of a power source to an input shaft of a transmission, absorbing a torque fluctuation between the output shaft and the input shaft with an elasticity thereof; and a limiter portion arranged on the power transmission path from the damper portion to the input shaft, configured to slip when the torque fluctuation caused by a torsion between the output shaft and the input shaft equals or exceeds a predetermined torque defined to absorb at the damper portion; wherein the damper portion includes a center plate in annular form transmitting a rotational power to the limiter portion; side plates, each in an annular form, arranged at each opposite side of the center plate in an axial direction with a displacement, receiving the input of the rotational power from the output shaft; an elastic member absorbing the torque fluctuation caused by the torsion between the center plate and the side plates; wherein the side plates directly or indirectly connect to a flywheel that connects to the output shaft at a circumferential portion outward in a radial direction with respect to the damper portion; wherein the torque fluctuation absorber connects to the flywheel with a plurality of bolts from a direction of the transmission; and wherein a subset of parts composing the limiter portion are provided with notch portions or through-holes for the bolts to penetrate at positions corresponding to the positions of the bolts viewed from the axial direction.