Importance

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Abstract

A drive device for a part of a motor vehicle which can be moved between end positions, especially for a movable cover of a vehicle roof, with an electric motor which is joined via a reducing gear to a driving pinion which sits on a driven shaft that is drive-connected to the movable part, and with a switching means which controls the motor for shutting off the motor in at least one predetermined position of the movable part which is actuated by a ratchet wheel which is caused to rotate less than 360.degree. via an eccentric toothed gearing when the part is moved between its end positions, the eccentric toothed gearing having an external body gear wheel with internal gear teeth arranged coaxial to a shaft of the eccentric toothed gearing, and an externally toothed internal body gear wheel which meshes therewith and which has at least one tooth less than the external gear wheel and which is supported on an eccentric of the eccentric toothed gearing that is rotationally fixed to the shaft so as to be able to rotate relative to the internal gear wheel and the eccentric. The external gear wheel is rotationally fixed to the ratchet wheel, and the internal body gear wheel is prevented from rotating relative to the external body gear wheel by a stationary guide pin which is received in one of a plurality of recesses provided in the internal body gear wheel for that purpose.

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First Claim