Lock-up device for torque converter

摘要

A lock-up device includes a clutch part, an input plate, an output plate, torsion springs and an input plate support member. The clutch part is disposed between a front cover and a turbine, and is configured to allow or block transmission of a torque. The input plate is coupled to a clutch output member of the clutch part. The output plate is fixed to a turbine shell. The torsion springs are disposed between the input plate and the output plate, and absorb and attenuate a torsional vibration. The input plate support member is fixed to a front cover side of a turbine shell and positions the input plate in a radial direction and an axial direction.

主权项

1. A lock-up device for a torque converter, the lock-up device being configured to transmit a torque from a front cover to a transmission-side member through a turbine shell of the torque converter, the lock-up device comprising:
a clutch part disposed between the front cover and the turbine, the clutch part being configured to allow or block transmission of the torque; a power transmission plate coupled to an output portion of the clutch part; an output-side member fixed to the turbine shell; a plurality of elastic members elastically coupling the power transmission plate to the output-side member in a circumferential direction; and a support member fixed to the turbine shell, the support member being configured to position the power transmission plate in a radial direction and an axial direction.