| 摘要 |
PURPOSE:To prevent the occurrence of slippage of operation timing between a main damper elastic member and a second friction member, by forming a two-stage type clutch disc wherein a predamper portion is formed independently of a main damper portion. CONSTITUTION:In a first stage, a predamper spring 6 only is operated to transmit a torque to an output shaft, and a dynamic hysteresis H1 at this time is generated by a friction washer 17. In a second stage and later, a spring 13 only is operated to transmit the torque to the output shaft, and a dynamic hysteresis H2 is generated by a friction washer 20. Accordingly, at the same time when the first stage is ended, the main damper spring 13 and the friction washer 20 start to operate, and no slippage of operation timing is therefore generated. Further, a maximum torsion of the clutch disc as a whole is not restricted by a maximum deflection of the predamper spring 6.
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