| 摘要 |
A driven unit (12) for a continuously-variable-ratio drive (8), having a fixed half-pulley assembly (23) having a fixed half-pulley (13b) connected to an output member (9) of the drive (8); a movable half-pulley assembly (24) having a movable half-pulley (13a) mounted to slide axially with respect to the fixed half-pulley (13b) to form with it a V-shaped groove (15) of variable width for a V-shaped belt (C); and a spring (17) which forces the half-pulleys (13a, 13b) towards each other to keep the half-pulleys (13a, 13b) in contact with the belt (C); the fixed half-pulley assembly (23) has one or more threaded through axial holes (35) in which to screw respective screws (41), which cooperate with an annular surface (36) axially facing the holes (35) in the fixed half-pulley assembly (23) to exert thrust on the surface (36) and part the half-pulleys (13a, 13b) in opposition to the spring (17). <IMAGE> |
