Friction device for clutch discs

摘要

Clutch disc (10), particularly for motor-vehicle friction clutches with a torsional vibration damper, with a hub (11) for the torsionally rigid reception of a gearbox shaft and of a hub disc (12) connected in torsionally rigid fashion to the hub (11). The hub disc (12) is provided with apertures (16) for the reception of torsion springs (15), the said apertures corresponding with apertures (17, 17a) in cover plates (13, 14), arranged on both sides of the hub disc (12), and being used to control the torsion springs (15) arranged in the apertures (16) of the hub disc (12). The cover plates (13, 14) are connected in torsionally rigid fashion to one another and held at a predetermined spacing. One of the cover plates (13) is provided with friction-lining carriers (19) to hold friction linings (20). The radially inner diameter of this first cover plate (13) is larger than the radially outer diameter (21) of the hub (11). The radially inner region (38) of the first cover plate (13) is assigned a spring-loaded friction device (26). The other cover plate (14) is free in relation to the outside diameter of the hub (11). The radially inner region (38) of the first cover plate (13) is surrounded by a plastic element (26) and arranged in positive engagement on the radially outer, cylindrical region (21) of the hub (11). The friction spring (27) acting on the plastic element (26) has integrated friction faces (28). <IMAGE>