Airbag cover element

• US 20090243269A1
• Filed: 03/20/2009
• Published: 10/01/2009
• Est. Priority Date: 03/26/2008
• Status: Abandoned Application

• Current Assignee: SCHREINER GROUP GMBH & CO. KG
• Original Assignee: SCHREINER GROUP GMBH & CO. KG
• Inventors: Braun, Uwe, Hufnagel, Volker
• Application Number:
  US12/383,172
• Publication Number:
  US 20090243269A1
• Time in Patent Office: Days
• US Class Current: 280/739
• CPC Class Codes: B60R 21/239 characterised by their venting means

Abstract

The valve closure layer (6) comprises at least one, preferably a plurality of, gas throughflow opening(s) (4) surrounding the gas outflow opening (1) in an annular manner and offset relative to the gas outflow opening (1) without overlap, and said valve closure layer overlaps the gas outflow opening (1) without an opening. A greater airbag internal pressure presses the valve closure layer (6) more firmly against the external layer (2) and thus reduces the gas outflow through the gas outflow opening (1). Such an airbag cover element may be configured as an integral part of the airbag cover or as a separate functional part to be attached over an airbag cover opening (on the inside or outside of the airbag).

Claims

1. Airbag cover element, comprising an external layer (2) with a gas outflow opening (1) and a valve closure layer (6) hindering a gas outflow through the gas outflow opening (1), depending on the airbag internal pressure, and arranged on the side of the external layer (2) facing the airbag interior, wherein the valve closure layer (6) comprises at least one gas throughflow opening (4), offset relative to the gas outflow opening (1) without overlap, and said valve closure layer overlaps the gas outflow opening (1) without an opening.

2. Airbag cover element according to claim 1, the gas throughflow opening (4) being configured as a material recess.

3. Airbag cover element according to claim 1, the valve closure layer (6) comprising a plurality of gas throughflow openings (4) surrounding the gas outflow opening (1) in an annular manner.

4. Airbag cover element according to claim 1, the valve closure layer (6) and the external layer (2) being bonded together.

5. Airbag cover element according to claim 1, the valve closure layer (6) and the external layer (2) being welded together.

6. Airbag cover element according to claim 1, the valve closure layer (6) comprising a peripheral edge fixing (5) with which it is fixed to the external layer (2), the valve closure layer (6) being free of connections to the external layer (2) and other layers of the airbag cover element inside the region surrounded by the edge fixing (5), and the gas throughflow opening (4) being arranged inside the region surrounded by the edge fixing (5).

7. Airbag cover element, comprising an external layer (2) with a gas outflow opening (1) and a valve closure layer (6, 6a) hindering a gas outflow through the gas outflow opening (1), depending on the airbag internal pressure, and arranged on the side of the external layer (2) facing the airbag interior, wherein the valve closure layer (6, 6a) is arranged as an intermediate layer between the external layer (2) and an internal layer (7), the internal layer comprising an internal opening (8) at least partially overlapping the gas outflow opening (1), the valve closure layer (6, 6a) comprising a gas throughflow opening (4, 4a) respectively at least partially overlapping the gas outflow opening (1) and the internal opening (8), depending on the airbag internal pressure, and tangentially displaceable, depending on the airbag internal pressure, relative to the gas outflow opening (1) and/or to the internal opening (8).

8. Airbag cover element according to claim 7, the gas throughflow opening (4, 4a) being designed as a material recess.

9. Airbag cover element according to claim 7, the valve closure layer (6, 6a) comprising a separating line (9) partially surrounding the gas throughflow opening (4, 4a).

10. Airbag cover element according to claim 9, the valve closure layer (6) being completely cut in two at the separating line (9).

11. Airbag cover element according to claim 9, the separating line (9) being designed as a weakened line.

12. Airbag cover element according to claim 7, the valve closure layer (6, 6a) being bonded to the external layer (2) and/or the internal layer (7).

13. Airbag cover element according to claim 7, the valve closure layer (6, 6a) being welded to the external layer (2) and/or the internal layer (7).

14. Airbag cover element according to claim 7, the valve closure layer (6, 6a) comprising a peripheral edge fixing (5), with which it is fixed to the external layer (2) and/or internal layer (8),

the valve closure layer (6, 6a) being free of connections to the external layer (2), internal layer (7) and other layers of the airbag cover element inside the region surrounded by the edge fixing.

15. Airbag cover element according to claim 7 comprising a further valve closure layer (6b) arranged between the valve closure layer (6a) and internal layer (8), the further valve closure layer (6b) comprising a gas throughflow opening (4b) respectively at least partially overlapping the gas outflow opening (1) and the internal opening (8), depending on the airbag internal pressure, and tangentially displaceable relative to the gas throughflow opening (4a) of the other valve closure layer (6a), depending on the airbag internal pressure, and relative to the gas outflow opening (1) and/or to the internal opening.

16. Airbag cover element comprising an external layer (2) with a gas outflow opening (1) and a valve closure layer (6, 6a) hindering a gas outflow through the gas outflow opening (1), depending on the airbag internal pressure, and arranged on the side of the external layer (2) facing the airbag interior, characterized in that the valve closure layer (6, 6a) comprises a peripheral edge fixing (5), with which it is fixed to the external layer (2), is free of connections to the external layer (2) and other layers of the airbag cover element inside the region surrounded by the edge fixing (5), and comprises at least one gas throughflow opening (4, 4a) inside the region surrounded by the edge fixing (5).