Damper disc with self-aligning spring seats

Abstract

A damper disc has side plates adapted to be connected to a torque input part so as to coaxially rotate therewith. A hub is connected to a torque output part and rotates coaxially to the side plates. A sub-plate is adapted to torsionally turn with respect to the side plates and the hub and is disposed coaxially thereto. A first spring mechanism circumferentially connects the sub-plate to the hub. A second spring mechanism circumferentially connects the side plates to the sub-plate. The spring mechanisms include a plurality of torsion springs disposed in series and spring seat units interposed between the adjacent springs. These spring seat units include a spring seat to which one of the springs is seated, a second spring seat to which another one of these springs is seated and a connecting means for connecting both spring seats together so that both spring seats can change their orientation with respect to the radial direction of the disc.

Dependencies are inferred from the claim text.