| 摘要 |
PURPOSE:To shorten a distance between the rotary shafts of a transmission mechanism by placing a bearing inside the secondary rotary shaft, for holding the secondary rotary shaft placed parallel with the first rotary shaft and at a side far from a clutch. CONSTITUTION:An input member 27 for inputting power from a clutch side is provided at one end of the first rotary shaft 7. The input means 27 provide a sprocket 28 for receiving the power transmitted from a shaft 2 via a chain 3 and a gear 29 for transmitting the power to the secondary rotary shaft 8 integrally. One end side of the secondary rotary shaft 8 is held by a projecting portion 31 from inside via a bearing 33, and the other end is held in the housing portion 5 of the transmission mechanism by a general bearing structure.
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