| 摘要 |
A vibration reducing apparatus comprising: a first helical gear (20) mounted on a first shaft (22) and engageable with a second gear (50) mounted on a second shaft (52), wherein at least one of the first helical gear (20) and the second gear (50) is axially movably mounted upon its respective shaft; actuation means (30) adapted to axially move at least one of the first helical gear (20) and the second gear (50) along its respective shaft in at least a first direction during rotation of the first helical gear (20) and the second gear (50); and control means (46) coupled to the actuation means (30) and adapted to control the amount of axial movement of the gear being moved by the actuation means (30).
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