Clutch disc assembly with torsional oscillation dampers

A clutch disc assembly for a motor vehicle friction clutch comprising:

• a hub defining a rotational axis and having a radially projecting annular flange affixed thereto;
• annular friction pad means coaxially rotatable with said hub for torque transmission therebetween, said friction pad means including a friction pad carrier having an inside circumference radially guided about said annular flange;
• annular plate means comprising a first and a second annular plate member arranged on axially opposite sides of said friction pad carrier, each of said plate members radially overlapping said friction pad carrier and said annular flange and being rotatable relative thereto;
• annular disc means comprising an annular disc member rotatable relative to said members flange arranged between said annular flange and one of said annular plate members;
• connecting members extending axially in the area of said annular flange and retained on said first annular plate member and guiding said second annular plate member and said annular disc member so as to be axially displaceable while at the same time fastening said first and second annular plate members and said disc member together so as to be rotatable relative to each other;
• abuttment recesses in said annular flange through which said connecting members extend with clearance in the circumferential direction of said hub and which limit the turning movement of said annular plate means and said annular disc means relative to said annular flange;
• first torsional vibration damper means for operation under load including a plurality of compression springs acting in a circumferential direction of said hub operatively interposed between said friction pad carrier and said first and second annular plate members;
• second torsional vibration damper means for idling operating including a plurality of compression springs acting in the circumferential direction of said hub operatively interposed between
• said first annular plate member and said annular disc member radially inwardly of said first torsion vibration damper means and retained within openings formed in said annular flange, said first annular plate member and said annular disc member;
• abuttment retained at said connecting members on that side of said second annular plate member facing axially away from said first annular plate member;
• and
• axially acting compression spring means axially arranged between said abuttment members and one of said second annular plate member and said annular disc member for generating frictional damping forces during operation of said clutch disc assembly under load between said friction pad carrier and said first and second annular plate members as well as friction damping forces during idling between said annular flange and said annular disc member.