Power device of window regulator
AssigneeOhi Seisakusho Co., Ltd.
InventorsHiroshi Ujihara, Akihiro Takeda
Life of this patent
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Abstract
A power device for a window regulator is disclosed. The window regulator is of a type which regulates a window pane by moving pull-up and pull-down drive cables connected to the window pane. The power device comprises a motor-powered driving part which includes an output shaft which has a regular polygonal cross section; and a cable winder part including a drum about which the pull-up and pull-down drive cables are wound, the drum having a coupling bore to which the output shaft is engaged, the coupling bore having a regular polygonal star-like cross section with equally spaced angular recesses. The number of the equally spaced angular recesses of the coupling bore is integral times as many as that of the angles of the polygonally cross-sectioned output shaft.
Claims13
A power device for use in a window regulator which regulates a window pane by axially moving pull-up and pull-down cables connected to the window pane, the power device comprising:
- a first unit which comprises an electric motor having an output shaft,
- a speed reduction gear including a worm driven by said output shaft, a worm wheel which is meshed with said worm, and
- a power output shaft driven by said worm wheel, said power output shaft having a regular polygonal cross section;
- a second unit which comprises a case, a shaft disposed in said case and a drum rotatably disposed about said shaft, said drum having said pull-up and pull-down cables wound thereabout and having a coupling bore to which said power output shaft is directly and operatively engaged, said coupling bore having a regular polygonal star-like cross section with equally spaced angular recesses,
- wherein the number of said equally spaced angular recesses of the coupling bore is integral times as many as that of the angles of the polygonally cross-sectioned output shaft in order to facilitate the coupling between said power shaft and said coupling bore upon coupling of said first and second units.
A power device for use in a window regulator which regulates a window pane by actually moving pull-up and pull-down cables connected to the window pane, the power device comprising:
- a first unit which comprises an electric motor, and means for reducing the speed of said electric motor attached to said electric motor;
- a second unit comprising a case, a shaft disposed in said case, a drum rotatably disposed about said shaft, said drum having said pull-up and pull-down cables wound thereabout;
- first and second coupling means, said first coupling means including a power output shaft rotatably fixed and axially fixedly secured to said reduction means, said output shaft having a regular polygonal cross section, said second coupling means including a coupling bore in said drum, said coupling bore having a regular polygonal star-like cross section with equally spaced angular recesses;
- wherein said first and second coupling means are directly and operatively engaged by said output shaft and said coupling bore performing an interlocking connection between said first and second unit, and the number of said equally spaced angular recesses of the coupling bore is integral times as many as that of the angles of polygonally cross section output shaft in order to facilitate the coupling between said power output shaft and said coupling bore upon coupling of said first and second units.
Dependencies are inferred from the claim text.