| 摘要 |
A lock-up clutch having high durability and high reliability of operation is provided in the present invention. Said lock-up clutch comprises a pump impeller connected mechanically with a prime mover, a power shaft, a turbine runner which transmits a driving force given by said pump impeller through a fluid to the power shaft, a stator which forces the circulating flow of a fluid to said pump impeller from said turbine runner, and a one-way clutch which restricts unilaterally the direction of rotation of said stator, wherein the lock-up clutch for a hydraulic unit featuring the provision of a lock-up clutch installed between said pump impeller and said turbine runner to transmit input from the power shaft of said prime mover to said turbine runner by direct, mechanical connection without a medium of a fluid, and of a vibration damper absorbing the torsional vibration from the prime mover or the power shaft when said lock-up clutch is operated, and the installation of said vibration damper in the outside of a circulation flow passage near the inlet caliber of said turbine runner.
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