Torsional Damper With Angular-Dependent Friction Damping Device

A torsion damper (3) with at least one torque input disk (5) and at least one torque output disk (25;

• 27), wherein the torque input disk (5) can move in circumferential direction relative to the torque output disk (25;
• 27) against the force of at least one spring storage (11), wherein the relative movement is damped by a friction device (41) which generates a smaller friction torque in a first swivel angle range (71) than in a second swivel angle range (81) in that the friction device (41) has at least two friction ring groups (43-48;
• 59;
• 61) which are rotatable opposite one another and which are activated depending on the swivel angle, the torsion damper comprising:
• a first group of friction rings (43-48) supported in circumferential direction so as to be stationary with respect to the torque output part (25;
• 27);
• and a second group of friction rings (59;
• 61) supported in circumferential direction in the first swivel angle range so as to be moveable relative to the torque input disk (5) and torque output disk (25;
• 27);
• and in the second swivel angle range the second group of friction rings (59;
• 61) supported in circumferential direction in a driving connection (67;
• 69) with respect to the torque input disk (5) and constructed to execute a synchronous rotational movement with the torque input disk (5),
• wherein in the second swivel angle range (81) a relative movement in circumferential direction taking place between the torque output disk (25;
• 27) and the second friction ring group (59;
• 61) and a relative movement in circumferential direction taking place between the torque input disk (5) and the first friction ring group (43-47), and a relative movement taking place between the friction rings of the first to second group (59, 61).