| 摘要 |
Planetary gearing comprising a sun gear (16), planet gears (17) disposed around the sun gear and rotatably connected to an output shaft (13), and a ring gear (29) disposed around the planet gears (17). A clutch ring (22, 25) and a synchronising ring (36, 37) are located one on each side of the ring gear (29) and a coupling sleeve (42) is arranged externally of the clutch rings (22, 25), synchronising rings (36, 37), and ring gear (29), and is displaceable to couple the ring gear (29) with either of the clutch rings (22, 25). The coupling sleeve (42) carries a pair of resilient clips (47) which are abuttable against the synchronising rings (36, 37), and which are resiliently deformable to allow the sleeve (42) to be displaced relative to the clips (47) for fully engaging the clutch rings (22, 25) after synchronisation. |
