TORSIONAL VIBRATION DAMPER IN LOCK-UP CLUTCH HAVING PLANETARY GEAR DEVICE

摘要

PROBLEM TO BE SOLVED: To cause only few natural frequency having as small amplitude as possible in a higher region than a region of natural frequency corresponding to such revolution speed as even very low lock revolution speed of a lock-up clutch. SOLUTION: This torsional vibration damper in a lock-up clutch having a planetary gear device is provided with a damper element 81 on a drive side which is connected with a turbine shell 29 with respect to its operation and a damper element 88 on a driven side which is connected to the damper element 81 on the drive side through a damping device 100 having at least one energy accumulator 102 which is effective in the peripheral direction and is rotated and fixed on a turbine hub 36 and is connected to it with respect to its operation. The damper element 81 on the drive side is constituted as a planetary carrier 95 for at least one gear device element 83 of a planetary gear device 89. The damper element 88 on the driven side is effective as another gear device element 90 of the planetary gear device 89.