| 摘要 |
PURPOSE:To reduce the capacity of a clutch by lessening the urging force of a clutch spring for pressing a pressure plate when back torque is applied to the clutch. CONSTITUTION:As a torque piece 21 is moved to the left according to the shape of a cam surface 22, a clutch outer holder 4 is moved against the elastic force of a spring 8. Further, a sleeve 9 is moved through a needle bearing 12 against the elastic force of a thrust washer 10. Therefore, the distance from the bottom wall 14a of a recess portion 14 to a washer 16 fixed to the sleeve 9 becomes longer than the fixing length in the ordinary clutch engagement state. Accordingly, the pressing force of a pressure plate 13 produced by the elastic force of a clutch spring 17, that is, the capacity of the clutch can be reduced.
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