| 摘要 |
<p>An improved gear change mechanism is provided for semi-automatically selecting a change up or change down gear change. The mechanism includes a shaft 31 which is movable in its axial direction and about its axis to make one such movement or a combination of such movements according to the gear to be selected. The shaft 31 is moved by pistons 36, 37 coaxial with the shaft for the axial movement and preferably a piston 46 at a right angle to the shaft for the rotational movement. In practice the axial movement is a translating movement and the rotary movement is a movement into and out of engagement with the gears. Throttle and clutch control functions are also preferably provided so that a gear change is initiated and brought about by switches which are preferably mounted on a vehicle steering wheel and one coupled to an infra-red transmitter. <IMAGE></p> |
