Drive device for a vehicle part that is displaceable between end positions
AssigneeWebasto Karosseriesysteme GmbH
InventorClaus Vordermaier
Life of this patent
Estimating the term…
Abstract
A drive device for a vehicle part that can be displaced between end positions, especially for a cover of an openable vehicle roof. The drive device is actuated by an electric motor that is connected, by a reduction gear, to a pinion gear placed on an output shaft. The drive device further has a switch element controlling the electric motor, to stop it in at least one predetermined position and an eccentric gear arrangement is provided to actuate the switch. The drive device enables an emergency actuation in which manual actuation of the output shaft is made possible by uncoupling of the electric motor while maintaining the coupling of the switching gear elements, so that, after an emergency actuation, no readjustment of the switching arrangement is necessary.
Claims8
Drive device for a vehicle part that is displaceable between end positions, comprising an electric motor that is connected by a reduction gear to a pinion gear on an output shaft via an input shaft, the pinion gear being in driving connection with the displaceable vehicle part by power transmission means, at least one switch for stopping operation of the electric motor in at least one predetermined position of the displaceable vehicle part, and an indexing gear and eccentric gear in driving connection with the reduction gear for actuation of the switch;
- wherein the output shaft, a driving part of the eccentric gear and a worm wheel of the reduction gear are drivingly coupled to the input shaft in a normal working position of the drive device and have gear means enabling axial shifting of the input shaft into an emergency actuation position in which the worm wheel is uncoupled from the input shaft, and the eccentric gear and the output shaft remain coupled with the input shaft.
Dependencies are inferred from the claim text.