| 摘要 |
A rear view mirror for vehicles is provided on a mirror housing having a remotely controllable motorized driving unit mounted inside it for turning the housing to adjust the mirror viewing range, yet enabling displacement of the housing without effect from or to the driving unit. A gear casing having an electric motor mounted on it contains speed reducing gears, is supported on and turnable about a mirror supporting post protruding from the housing, and is fixed to the housing to position the housing by movement about the axis of a ring gear that normally is held fixed relative to the post. The ring gear is connected with the post via a spring biased clutch that slips to enable forcible turning of the housing by hand or in the event of impact with an obstruction.
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