| 摘要 |
<p>A control assembly is for use in a vehicle having a transmission with an output shaft whose speed and direction are continuously adjustable by means of a selector rod. A pedal is movable in one direction from a rest position and a switchable mechanism connects the selector rod with the pedal. In a first condition when the pedal is depressed, the switchable mechanism causes the selector rod to move in one direction from a central position in which the output shaft does not rotate. This in turn causes the output shaft to rotate in one direction. When the switchable mechanism is shifted to a second condition, depressing the pedal causes the selector rod to move in the opposite direction from its central position, and this causes the output shaft to rotate in the opposite direction. Shifting of the switchable mechanism from one condition to another is effected by a solenoid which is controlled by a circuit. The circuit includes a selector switch for actuating the solenoid to cause the switchable mechanism to change conditions, and the selector switch may be actuated at any position of the pedal. The circuitry, however, enables the switchable mechanism to be changed from one condition to the other only when the selector rod is in its central position.</p> |
