Drive unit for a windshield wiper device

Abstract

Drive device for a windshield wiper in a vehicle, comprising an electric drive motor (6) and a gearbox (19) and a switching device for switching the drive motor (6), wherein the switching device has an electrically conductive sliding contact ground part (21) comprising a contact wiper (24) and a contact track (25) formed integrally with the contact wiper (24), which is electrically grounded, characterized in that the sliding contact ground part (21) is received in an electrically non-conductive housing component and that the contact track (25) of the sliding contact ground part (21) is in contact with an electrically conductive housing component and the contact track (25) has a mounting eye (27) which is in overlap with a mounting recess (28) in the non-conductive housing component.wherein a connecting screw is guided through the mounting eye (27) and the mounting recess (28) for connection with the electrically conductive housing component.

Claims

Drive device for a windshield wiper in a vehicle, comprising an electric drive motor (6) and a gearbox (19) and a switching device for switching the drive motor (6), wherein the switching device has an electrically conductive sliding contact ground part (21) comprising a contact wiper (24) and a contact track (25) formed integrally with the contact wiper (24), which is electrically grounded, characterized in that the sliding contact ground part (21) is received in an electrically non-conductive housing component and that the contact track (25) of the sliding contact ground part (21) is in contact with an electrically conductive housing component and the contact track (25) has a mounting eye (27) which is in overlap with a mounting recess (28) in the non-conductive housing component.wherein a connecting screw is guided through the mounting eye (27) and the mounting recess (28) for connection with the electrically conductive housing component. Drive device according to claim 1, characterized in that the mounting eye (27) branches off from a straight connecting line section of the contact track (25) which is connected to the contact wiper (24). Drive device according to one of claims 1 to 2, characterized in that the non-conductive housing component is a gearbox cover (23) and the electrically conductive housing component is the gearbox housing (20). Drive device according to one of claims 1 to 3, characterized in that a sliding contact potential part (22) is incorporated in the electrically non-conductive housing component. Drive device according to one of claims 1 to 4, characterized in that the electrically conductive housing component is made of aluminium. Drive device according to one of claims 1 to 5, characterized in that the sliding contact mass part (21) is positively connected to a housing component. Drive device according to claim 6, characterized in that a positive locking element is introduced into the transition area between contact wiper (24) and contact track (25). Drive device according to claim 6 or 7, characterized in that the positive locking element is designed as a positive locking recess (26) with which the sliding contact mass part (21) can be buttoned onto a projection. Windscreen wiping device in a vehicle, in particular rear window wiper, with a drive unit (3) according to one of claims 1 to 8.

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