DISCO DELLA FIRZIONE IN PARTICOLARE PER AUTOVEICOLI

A clutch plate for use in the friction clutches of automotive vehicles has a rotary hub with two spaced-apart coaxial annular cheeks which flank the inner portion of an annular carrier for friction linings. The carrier can turn, within limits, relative to the cheeks against the opposition of coil springs which are inserted into registering windows provided therefor in the cheeks and in the carrier. A first friction generating unit operates continuously between the hub and the carrier, and such friction generating unit has two friction pads disposed at the opposite sides of the carrier immediately adjacent or close to the periphery of the hub, and a ring-shaped spring which reacts against one of the cheeks to urge one of the pads against the carrier which is movable axially to urge the other pad against the other cheek. A second friction generating unit surrounds the first unit and is designed to generate friction during certain stages of angular movement of the carrier relative to the cheeks or vice versa. The second unit has a ring-shaped friction generating component disposed at one side of the carrier and a resilient dished annular second component at the other side of the carrier. The latter has apertures for axially extending arms of the friction generating component, and such arms are engaged by the radially outermost portion of the second component.