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

摘要

The present invention suppresses the peak in torque fluctuations of a rotating body across a comparatively broad rotation speed range. To this end, this device is equipped with an inertia ring (20), a centrifugal element (21), and a cam mechanism (22). The inertia ring (20) is capable of rotating along with an output-side rotating body (12), and is positioned so as to also be capable of rotating relative to the output-side rotating body (12). The centrifugal element (21) is positioned so as to receive centrifugal force caused by the rotations of the output-side rotating body (12). When centrifugal force acts on the centrifugal element (21) and relative displacement in the direction of rotation occurs between the output-side rotating body (12) and the inertia ring (20), the cam mechanism (22) converts the centrifugal force into a circumferential-direction force in the direction that decreases the relative displacement, and when a torque fluctuation equal to or greater than a prescribed size is inputted to the output-side rotating body (12), the cam mechanism (22) causes the inertia ring (20) to rotate freely relative to the output-side rotating body (12).