AN EPICYCLIC CHANGE GEAR SYSTEM

摘要

An epicyclic change speed gear comprises a fixed spindle (4) and side-by-side sun pinions (1, 2, 3) rotatable on the spindle. A gear selector key (5) is adapted for selective cooperative engagement with one of the sun pinions to lock that pinion to the spindle. The key (5) is operated by a sleeve (15) disposed for rotational movement relative to the spindle (4). Rotation of the sleeve (15) displaces the key (5) axially to lock the selected sun pinion. One or both axial ends of the sleeve (15) are angled such that different degrees of rotation cause different axial displacements of the key (5) and cause different sun pinions to be locked.