| 摘要 |
An actuating device, for actuating a motor vehicle gearbox, comprises an output member 9, ie a selector shaft of a change-speed gearbox, which is movable axially and angularly by respective actuating drives 3, 5. First drive 3 is connected via crank gearing 14 to a slide element 7 having a projection 27 which transmits the linear movement of the element 7 to the member 9. Angular movement is provided by second drive 5, acting on segmented gearwheel 31 and transmitted to the member 9 through projection 33. The slide element 7 is fixed to member 9 by projection 27 engaging a gap 28 with no axial clearance but with circumferential clearance so that only axial movement of element 7 is transmitted to the member 9. Circumferential clearance in gap 28 allows gearwheel 31 to rotate the member 9, via projection 33, without influencing the position of slide element 7. The crank gearing 14 may be replaced by, for example, a rack and pinion, or a cam, or a solenoid which would also act as one of the drives(see figs 4 to 7). Various forms of compensating and damping devices are disclosed (see figs 10, and 15 to 18) and in another embodiment only a single drive may be used together with a switching device (see figs 11 to 14). |
