Torsion vibration damper for vehicle clutch discs

摘要

The vibration damper has two dampers which are connected in series. One has energy accumulators of lower stiffness and the second has energy accumulators of higher stiffness. The first energy accumulators between the input part and output part allow an overall turning angle of at least 20 degs and produce a maximum torque in the order of 4 to 20 Nm preferably 6 to 16 Nm. The second damper allows a turning angle of at least 150 degs. between input and output part and has a turning stiffness in the order of pref between 10 and 25 Nm/degs. Starting from a central position the possible relative rotation between the output and input part is greater in one relative turning direction than the other. The possible turning angle between input and output parts when these are strained in the pulling direction is greater than the possible angle in the pushing direction.