Assembly damping plate comprising springs has radial displacement limit

The invention relates to a damper disc assembly comprising a first disc (9) provided with a plurality of windows (10a) arranged in a circumferential direction; two second discs (2, 3) disposed on opposite sides of the first drive and fixed to each other, which comprise a plurality of coupling parts (2a, 3a); several coil springs (6) arranged in the windows between the parts (2a, 3a), opposite ends of each of the springs being in contact with parts (2a, 3a) corresponding, when the first disk and the second disk are in a torsion free state; and a restricting portion formed in at least one of windows and adapted to engage one end of a respective spring, in response to relative rotational movement between the discs in order to limit radial movement outwardly of the springs.