| 摘要 |
The variable speed shifting of an infinitely variable speed transmission T mounted on a motor cycle is carried out by a small-sized control motor 54 and the infinitely variable speed transmission T can be shifted also to a finite variable speed mode for satisfying the likes and needs of a rider. More specifically, movable sheaves 13 and 18 of driving and driven pulleys 11 and 16 comprised of variable speed pulleys are driven by cam mechanisms 30 and 40 interlocked by a linkage mechanism 49. The control motor 54 for operating the linkage mechanism 49 and a controller 56 for controlling the control motor 54 are provided. Based on a control signal from a shift control switch 59 which is operated by the rider of the motor cycle, the controller 56 allows the variable speed mode of the infinitely variable speed transmission T to shift between two different modes, i.e., a semi-automatic mode in which the variable speed ratio of the infinitely variable speed transmission T is shifted to a selected one of a plurality of preset variable speed ratios and a full-automatic mode in which the variable speed ratio is varied infinitely. <IMAGE> |
