| 摘要 |
A multistage transmission is provided that smoothly operates with a small force without the necessity of a shift clutch, that does not cause a loss of switching time during shifting, and that does not cause escape of a driving force as well as provides a small shift shock. When shift drive means executes upshift to a one-step-upper speed-change stage reduced in reduction ratio by one stage, normal rotation odd-numbered stage cam rods Cao and normal rotation even-numbered stage cam rods Cae alternately operate normal rotation odd-numbered stage engaging members Rao and the normal rotation odd-numbered stage engaging members Rae for shifting.
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