| 摘要 |
A pedal actuator in which a pedal 10 is movable by the application of foot pressure between raised and depressed positions to actuate a device such as a vehicle differential lock 11 via an operating means 12,13,14,16. The pedal is biassed towards its raised position, and a holding device 24 is provided for maintaining the pedal in its depressed position. The holding device comprises a cam follower 33 connected with the operating means for co-movement therewith and cam means 32 for co-operation with the follower. The cam means includes a first cam path 34 along which the follower 33 is moved as the pedal is moved from its raised to its depressed position, a holding position 35 in which the cam follower is held by the bias 21 to hold the pedal it its depressed position, and a second cam path 36 along which the follower moves under the action of the bias as the pedal rises from its depressed position to its raised position. A pivotable bridging member 37 is movable by the follower 33 to bridge a gap 38 in the first cam path 34 when the pedal is depressed from its raised position and is moveable by the follower on its way back along the second cam path 36 to allow the follower 33 to return via the gap 38 to its position corresponding to the raised position of the pedal 10. |
