| 摘要 |
A relatively simple device for turning a mirror on a truck or other automotive vehicle includes a pivot for rotatably supporting one end of the mirror, and a casing on the other end of the mirror. The casing contains a reversible motor and gearbox combination for rotating a threaded shaft, which carries a threaded block. Rotation of the shaft causes movement of the block to rotate an arm connected to the other end of the mirror. A pair of microswitches located in the path of travel of the block limit movement of the block and consequently rotation of the mirror beyond predetermined limits.
|
