Control device for operating an electric window lifter
AssigneeBrose Fahrzeugteile GmbH & Co. KG, Hallstadt
InventorsRené Zellmer, Roland Kalb
Life of this patent
Estimating the term…
Abstract
The invention relates to a control device for carrying out an operating method for an electric window lifter for moving a rear pane (3) in a motor vehicle, in which the rear pane (3) is moved in a lowering direction (−z) along an approximately s-shaped path of movement. In the case of trapping, the movement of the rear pane (3) in the lowering direction (−z) is stopped and the rear pane (3) is moved in the lifting direction (+z).
Claims12
An apparatus comprising a control device for carrying out an operating method for (i) an electric rear window lifter for moving a rear pane and (ii) an electric front window lifter for moving a front pane in a motor vehicle, wherein:
- the control device is configured to control the electric rear window lifter to move the rear pane in a rear-pane lowering direction;
- the control device is configured to detect trapping of a body part or other object between the rear pane and the front pane, while the electric rear window lifter is moving the rear pane in the rear-pane lowering direction;
- the control device is configured, upon detecting the trapping of the body part or the other object, to automatically move the rear pane in a rear-pane lifting direction to a safety position that eliminates the case of trapping, while preventing movement of the front pane, and
- the control device is configured, upon reaching the safety position, to automatically hold the rear pane at the safety position, wherein:
- a corner of the rear pane moves along a curved trajectory when moved in the rear-pane lowering direction from a closed position to an open position, forming a gap between the rear pane and the front pane at intermediate positions;
- the case of trapping occurs at a trapping position wherein the gap is substantially closed in a plane of movement of the rear pane;
- at the safety position, the gap is open in the plane of movement of the rear pane;
- and
- the safety position is an intermediate position between the closed position and the open position.
An apparatus comprising a control device configured to operate (i) an electric rear window lifter motor for a rear pane and (ii) an electric front window lifter motor for a front pane in a motor vehicle, wherein:
- the control device is configured to activate, prior to detection of trapping of a body part or other object, the electric rear window lifter motor to move the rear pane in a rear-pane lowering direction;
- the control device is configured to detect the trapping of the body part or the other object between the rear pane and the front pane, while the electric rear window lifter motor is moving the rear pane in the rear-pane lowering direction;
- the control device is configured to automatically move, after detecting the trapping of the body part or the other object, the rear pane in a rear-pane lifting direction to a safety position that eliminates the case of trapping, while preventing movement of the front pane;
- and
- the control device is configured, upon reaching the safety position, to automatically hold the rear pane at the safety position, wherein:
- a corner of the rear pane moves along a curved trajectory when moved in the rear-pane lowering direction from a closed position to an open position, forming a gap between the rear pane and the front pane at intermediate positions;
- the case of trapping occurs at a trapping position wherein the gap is substantially closed in a plane of movement of the rear pane;
- at the safety position, the gap is open in the plane of movement of the rear pane;
- and
- the safety position is an intermediate position between the closed position and the open position.
Dependencies are inferred from the claim text.