TORQUE-FLUCTUATION SUPPRESSION DEVICE, TORQUE CONVERTER, AND POWER TRANSMISSION DEVICE

摘要

The present invention suppresses the peak in torque fluctuations of a rotating member across a broad rotation speed range. To this end, this device is equipped with a mass body (20), first and second centrifugal elements (21), and first and second cam mechanisms (221, 222). The mass body (20) is capable of rotating along with a rotating body (12), and is also capable of rotating relative to the rotating body (12). Each of the centrifugal elements (21) receives the centrifugal force caused by the rotation of the mass body (20) and the rotating body (12). The first cam mechanism (221) converts the centrifugal force to a first circumferential-direction force in a direction which decreases relative displacement, when centrifugal force acts on the first centrifugal element (21) and relative displacement in the direction of rotation occurs between the rotating body (12) and the mass body (20). The second cam mechanism (222) converts the centrifugal force to a second circumferential-direction force in a direction which decreases relative displacement, when centrifugal force acts on the second centrifugal element (21) and relative displacement in the direction of rotation occurs between the rotating body (12) and the mass body (20).