| 摘要 |
<p>A combined electrical switch and lock assembly including fixed contacts and a movable contact which is carried by a rotor of the assembly. A key operated mechanism is provided for moving the rotor and moving with the rotor is a cam member. A pair of locking elements are resiliently biassed into engagement with the cam member, the shape of the cam member being such that in a first angular position of the rotor one locking element is urged by the cam member to a position in which it resists operation of a control of a machine with which the assembly is associated. In a second angular position of the rotor the rotor is held against movement into a third angular position by the other locking element unless the other locking element is free to move against the action of its resilient bias. The other locking element will be held against movement in certain circumstances by a control of the machine with which the assembly is associated. Particularly the assembly is intended for use in a road vehicle where the electrical switch controls the starting of the engine of the vehicle and the mechanical lock mechanism controls operation of the gear box of the vehicle.</p> |
