| 摘要 |
<p>A first countershaft (20), that comprises a gear that is always meshed with a gear provided on an input shaft (10), comprises a gear that is always meshed with a gear provided on a first intermediate shaft (30). A second countershaft (60), that comprises a gear that is always meshed with a gear provided on a second intermediate shaft (40), comprises a gear that is always meshed with a gear provided on an output shaft (50). A reverse speed can be configured using the gears used in forward speeds by switching between a state in which the gears provided on the shafts turn relative to the shafts and a state in which the gears turn together with the shafts. Consequently, a clutch, idle shaft, and idle gear dedicated to reverse speed can be omitted.</p> |
