Device for sensing an obstacle in the opening range of a closure element of a motor vehicle

• US 20040017171A1
• Filed: 05/06/2003
• Published: 01/29/2004
• Est. Priority Date: 05/07/2002
• Status: Active Grant

• Current Assignee: Metzeler Automotive Profile Systems GmbH (Cooper-Standard Holdings Incorporated)
• Original Assignee: Metzeler Automotive Profile Systems GmbH (Cooper-Standard Holdings Incorporated)
• Inventors: Staus, Steffen
• Granted Patent: US 7,015,666 B2
• Time in Patent Office: Days
• US Class Current: 318/469
• CPC Class Codes: B60J 10/00 Sealing arrangements
• CPC Class Codes: E05F 15/46 responsive to changes in electrical capacitance
• CPC Class Codes: E05Y 2900/132 Doors
• CPC Class Codes: E05Y 2900/148 Windows
• CPC Class Codes: Y10S 388/903 Protective, e.g. voltage or current limit

Abstract

A device for sensing an obstacle in said opening range of an automotive closure element movable between an open position and and closed position, more particularly an electrically powered door window (20) or sunroof is provided with a weatherseal (30) sealing the window pane (20). The weatherseal (30) is made of an elastomeric material and secured to a frame (12) of the motor vehicle (10). The device comprises in addition a sensor for sensing an obstacle in the opening range of the closure element (20), the sensor comprising at least one electrical conductor (40) generating an electrical field (F) in the opening range of the closure element (20).

The device achieves by simple ways and means an engineered orientation of the electrical field such that any interference by the closure element (20) to the capacitive change in the electrical field (F) is precluded by reason of conductive means (50) comprising a conductive surface (51) made of an electrically conductive material. The conductive means (50) are electrically insulated and shield the window pane (20) from the electrical field (F) generated by the electrical conductor (40).

Claims

1. A device for sensing an obstacle in the opening range of a closure element of a motor vehicle, more particularly an electrically powered door window or sunroof wherein said closure element is movable between an open position and a closed position, comprising a sensor for sensing an obstacle in the opening range of said closure element, said sensor including at least one electrical conductor generating an electrical field in the opening range of said closure element;

and conductive means having a conductive surface area consisting of an electrically conductive material, said conductive means being electrically insulated and shielding said closure element from said electrical field generated by said electrical conductor.

2. The device as set forth in claim 1, comprising a weatherseal sealing said closure element, said weatherseal being made of an elastomeric material and secured to a frame of said motor vehicle, said conductive means being arranged on said weatherseal.

3. The device as set forth in claim 2, wherein said conductive means are a metallic inlay embedded in said weatherseal.

4. The device as set forth in claim 3, wherein said conductive means are formed by a carrier of said weatherseal.

5. The device as set forth in claim 2, wherein said conductive means form an electrically conductive portion of said weatherseal.

6. The device as set forth in claim 1 in which said conductive means are arranged on a trim covering said frame at least in part.

7. The device as set forth in claim 1 in which said conductive means are arranged on a trim covering said weatherseal at least in part.

8. The device as set forth in claim 6, wherein said weatherseal is made of a material having a relatively high dielectric constant.

9. The device as set forth in claim 6, wherein said trim is made of a material having a relatively high dielectric constant.

10. The device as set forth in claim 1 in which said conductive means are arranged in the region of said electrical conductor.

11. The device as set forth in claim 1 in which said sensor comprises a grounded electrical conductor serving as the opposing electrode.