| 摘要 |
A power pack for controlling the position of a rearview mirror of an automotive vehicle which is to be mounted within a mirror housing. The mirror housing is shaped to define a cavity. The power pack is connected to a base plate which holds the mirror within the housing cavity. A stationary pivot assembly is connected to the power pack to pivotally couple to the base plate. A movable pivot assembly is connected to the base plate for pivoting the mirror about the stationary pivot assembly. A motor is located within the power pack and is rotatably coupled to a drive shaft. A first portion of the drive shaft has a first set of threads and a second portion of the drive shaft has a second set of threads opposite that of the first portion. A first arm and second arm are coupled to said first set of threads and the said second set of threads, respectively. Each arm is also connected to the moveable pivot assembly. As the first arm and second arm travel along the shaft, the moveable pivot assembly moves with respect to the power pack. The movement provided by the moveable pivot assembly rotates the mirror about the stationary pivot assembly.
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