Gas bag module

• US 20070080530A1
• Filed: 09/22/2006
• Published: 04/12/2007
• Est. Priority Date: 10/06/2005
• Status: Active Grant

• Current Assignee: TRW Automotive GmbH (Apollo Global Management, Inc.)
• Original Assignee: TRW Automotive GmbH (Apollo Global Management, Inc.)
• Inventors: Issler, Bernd, Aranzulla, Daniele, Schmid, Juergen
• Granted Patent: US 7,789,421 B2
• Time in Patent Office: Days
• US Class Current: 280/743.200
• CPC Class Codes: B60R 2021/23384 having ends which are movable or detachable during deployment
• CPC Class Codes: B60R 21/233 comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other B60R21/232 takes precedence
• CPC Class Codes: B60R 21/2338 Tethers

Abstract

A gas bag module includes a module housing (18), a gas bag (24) having a gas bag wall (26), a discharge opening (20) which can be closed by a closure device (22), and a limiting strap (28), the limiting strap (28) being coupled with the gas bag wall (26) and the closure device (22). The limiting strap (28) is tensioned in case of an unimpeded unfolding of the gas bag (24) such that the closure device (22) closes the discharge opening (20), and the limiting strap (28) is guided along the gas bag wall (26).

Claims

1. A gas bag module comprising

a module housing (18),

a gas bag (24) having a gas bag wall (26),

a discharge opening (20) which can be closed by a closure device (22), and

a limiting strap (28),

said limiting strap (28) being coupled with said gas bag wall (26) and said closure device (22),

said limiting strap (28) being tensioned in case of an unimpeded unfolding of said gas bag (24) such that said closure device (22) closes said discharge opening (20) and

said limiting strap (28) being guided along said gas bag wall (26).

2. The gas bag module according to claim 1, wherein said discharge opening (20) is provided in said module housing (18).

3. The gas bag module according to claim 1, wherein said closure device (22) is a ventilation flap.

4. The gas bag module according to claim 1, wherein said limiting strap (28) is guided substantially over its entire length along said gas bag wall (26).

5. The gas bag module according to claim 1, wherein lugs (30) are provided on said gas bag wall (26) to guide said limiting strap (28).

6. The gas bag module according to claim 1, wherein in an unfolded state of said gas bag (24), said limiting strap (28) lies substantially in a vertical plane.

7. The gas bag module according to claim 1, wherein in an unfolded state of said gas bag (24), said limiting strap (28) lies substantially in a horizontal plane.

8. The gas bag module according to claim 1, wherein in an unfolded state, said gas bag wall (26) has a front wall section (36) facing an occupant (14), and a rear wall section (38), facing away from said occupant (14), said limiting strap (28) extending from said rear wall section (38) over said front wall section (36) back to said rear wall section (38) again.

9. The gas bag module according to claim 1, wherein a first end (32) of said limiting strap (28) is fastened to one of a rear wall section (38) and said module housing (18), and a second end (34) is secured to said closure device (22).

10. The gas bag module according to claim 1, wherein a first and a second end (32, 34) of said limiting strap (28) are fastened to one of a rear wall section (38) and said module housing (18), and a traction strap (40) is provided, a first end (42) of said traction strap (40) being secured to said limiting strap (28) and a second end (44) of said traction strap (40) being secured to said closure device (22).