Damper disc assembly

A damper disc assembly for transmitting a torque inputted thereto from an engine toward a transmission, comprising:

• an input plate to which the torque is inputted from the engine;
• an output unit including an input-side member and an output-side member, the input-side member and the output-side member disposed rotatably relative to the input plate, the input-side member and the output-side member disposed rotatably relative to each other, the input-side member disposed axially in opposition to the input plate, the output-side member coupleable to the transmission;
• a high stiffness damper unit elastically coupling the input plate and the input-side member in a rotational direction, the high stiffness damper unit configured to be actuated in a high torsion angular range of torsional characteristics;
• a low stiffness damper unit elastically coupling the input-side member and the output-side member in the rotational direction, the low stiffness damper unit disposed axially between the input plate and the input-side member on an inner peripheral side of the high stiffness damper unit, the low stiffness damper unit configured to be actuated in a low torsion angular range of the torsional characteristics, the low stiffness damper unit having a lower stiffness than the high stiffness damper unit;
• a first hysteresis torque generating mechanism configured to generate a first hysteresis torque in a lower torsion angular part of the actuation range of the low stiffness damper unit;
• and
• a second hysteresis torque generating mechanism configured to generate a second hysteresis torque higher than the first hysteresis torque in a higher torsion angular part of the actuation range of the low stiffness damper unit and the actuation range of the high stiffness damper unit.