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Adjustment device of electric power mirrors
| Details |
Inventors: Fukai, Akira;
Assignee: Murakami Corporation (Shizuoka, JP)
Primary Examiner: Shafer; Ricky D.
Assistant Examiner:
Attorney, Agent or Firm: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
An adjustment device used for electric power mirrors comprising a motor to rotate a worm wheel, an adjustment nut that can slide along the direction of the rotational axis but cannot relatively rotate against the rotation of worm wheel, and an actuator housing that has a column on which surface a screw portion is made, wherein the adjustment nut is movable along the direction normal to a plane of screw rotation of said screw portion, and the adjustment nut has a salient extending to the outer direction at the leg portion thereof and the worm wheel has stopper portion that bumps the salient of the adjustment nut so that the adjustment nut is not pulled off from the actuator housing. Therefore the mirror exchanging service can be easily done. |
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DETAILED DESCRIPTION What is claimed is: 1.
An adjustment device used for electric power mirrors comprising: a worm wheel rotated by an actuator with a rotational axis, an adjustment nut that can slide along a direction of said rotational axis but cannot relatively rotate against rotation of said worm wheel, and an actuator housing that has a screw portion by which said adjustment nut is assembled therewith in a fashion to be movable along a direction normal to a plane of screw rotation of said screw portion, wherein; said adjustment nut has a salient extending to an outer direction from an outer surface thereof, and said worm wheel has a stopper portion which is facing to a surface of said adjustment nut and both said adjustment nut and said worm wheel are assembled in a form such that said salient and said stopper portion bump to limit said adjustment nut not to further slide on said screw portion to be pulled off from said screw portion.
2.
An adjustment device used for electric power mirrors according to claim 1, wherein; said screw portion is made on an outer surface of a column standing on said actuator housing, a nail portion extending to an inside of said adjustment nut is made in said adjustment nut and is fitted to said screw portion, and said stopper portion is made in an inside surface of said worm wheel extending to inside direction thereof.
3.
An adjustment device used for electric power mirrors according to claim 2, wherein, a bumping surface on which said salient and said stopper portion bump to limit said adjustment nut not to further slide on said screw portion to be pulled off from said screw portion is a part of a surface of a cone that has an acute angle to a plane normal to the rotation axis of said adjustment nut.
Description:
FIELD OF THE INVENTION This invention relates to an adjustment device used in electric power mirrors, especially, the adjustment device that has a mechanism by which the mirror can be surely reassembled in exchanging services without troubles in reassembling
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