| 摘要 |
<p>To provide a downsizable and inexpensive transmission in which shifting is done by first and second shift clutches to which a power of an engine is transmitted. A transmission includes a first shifting part and a second shifting part which shift a power of an internal combustion engine, a first shift clutch transmitting and interrupting the power to the first shifting part, and a second shift clutch transmitting and interrupting the power to the second shifting part, and a selection mechanism (M2) which selects gear steps. The selection mechanism (M2) includes three shifters that are respectively guided by cam grooves (91 to 93) of a single shift drum (90) through shift forks (84 to 86). The shifters can be respectively moved to selection positions where the gear steps are selected and to neutral positions where the gear steps are not selected in the first shifting part and the second shifting part. The cam grooves (91 to 93) guide the shifters to the selection positions in each of the first shifting part and the second shifting part for each of predetermined rotational positions (P3 to P6) of the shift drum (90).</p> |
