| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a clutch structure for improving operational responsiveness in a clutch piston, by improve discharge performance of oil, while arranging an oil discharge hole in a spring plate and a spring retainer. <P>SOLUTION: This clutch structure of a hydraulic clutch 44 includes a rotary shaft 41C rotatably supported by a crankcase and the clutch piston 80 coaxially arranged with the rotary shaft and switching a clutch-OFF state and a clutch-ON state in response to the axial directional movement, wherein control oil pressure chambers 86A and B and canceller chambers 87A and B are formed on both surfaces in the axial direction of the clutch piston, the canceller chambers are formed between the clutch piston and the spring retainer 82, and the spring retainer holds the spring plate 100 for supporting a coil spring 85 for energizing the clutch piston in the canceller chambers. A plurality of oil discharge holes 100a and 82a are formed in a position overlapping in the radial direction with the coil spring in the spring plate and the spring retainer. <P>COPYRIGHT: (C)2012,JPO&INPIT |
