Tension-based airbag mounting system

• US 7,712,774 B2
• Filed: 11/06/2006
• Issued: 05/11/2010
• Est. Priority Date: 11/06/2006
• Status: Active Grant

• Current Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Original Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Inventors: Garner, Brett R., Gammill, Kurt
• Primary Examiner(s): Ilan; Ruth
• Application Number:
  US11/593,426
• Publication Number:
  US 20080106073A1
• Time in Patent Office: 1,282 Days
• Field of Search: 280/730.2, 280/743.1, 280/743.2, 280/728.2
• US Class Current: 280/730.2
• CPC Class Codes: B60R 2021/23386 External tether means
• CPC Class Codes: B60R 21/213 in vehicle roof frames or pillars
• CPC Class Codes: B60R 21/232 Curtain-type airbags deploying mainly in a vertical direction from their top edge
• CPC Class Codes: B60R 21/2338 Tethers

Abstract

An airbag assembly including a tension mounting mechanism is disclosed. In one embodiment, an inflatable curtain is coupled to a one-way locking mechanism via an attaching element to provide tension along the longitudinal mounting surface of the inflatable curtain during its installation adjacent the vehicle roof rail.

Claims

1. An airbag assembly, comprising:

an airbag including a mounting surface, the mounting surface configured to be coupled to a vehicle;

a tensioning mechanism configured to be attached to a vehicle, wherein the tensioning mechanism comprises a one-way locking mechanism and a locking band, wherein the locking band extends through the one-way locking mechanism with a ratcheting configuration that permits the locking band to move linearly in one direction while impeding movement in the opposite direction; and

an attaching element attached to the mounting surface and interconnecting the mounting surface and the locking band;

wherein the tensioning mechanism is configured to provide tension along the mounting surface, the attaching element and the locking band upon installation and to keep the mounting surface, the attaching element and the locking band in a tension condition after installation such that the airbag is maintained in a desired position after installation.

2. The airbag assembly of claim 1, wherein the airbag comprises an inflatable curtain.

3. The airbag assembly of claim 2, wherein the mounting surface comprises an uninflatable edge of the inflatable curtain configured to be mounted adjacent a roof rail of a vehicle.

4. The airbag assembly of claim 3, wherein the mounting surface comprises a plurality of mounting orifices configured to receive corresponding protrusions extending from a vehicle.

5. The airbag assembly of claim 1, wherein the attaching element comprises a tether.

6. The airbag assembly of claim 5, wherein the tether is coupled to a receiving orifice disposed in the mounting surface of the airbag.

7. The airbag assembly of claim 5, wherein the attaching element further comprises an attachment tab coupled to the tether, the attachment tab being integrally formed in the mounting surface and extending therefrom.

8. The airbag assembly of claim 5, wherein the attaching element further comprises an attachment tab coupled to the tether, the attachment tab being affixed to the mounting surface and extending there from.

9. A method for installing an inflatable curtain airbag, comprising:

positioning a mounting surface of an inflatable curtain in a mounting position adjacent the roof rail of a vehicle; and

providing a tensioning force longitudinally along the mounting surface of the inflatable curtain when the inflatable curtain is in the mounting position,

wherein providing a tensioning force comprises;

actuating a tensioning mechanism coupled to an attaching element, which is attached directly to the inflatable curtain, to maintain the attaching element and mounting surface in a tensioned condition,

wherein the tensioning mechanism comprises a one-way locking mechanism through which a locking band extends with a ratcheting configuration that permits the locking band to move linearly in one direction while impeding movement in the opposite direction, and

wherein actuating the tension mechanism comprises ratcheting the locking band through the one-way locking mechanism.

10. The method of claim 9, wherein positioning a mounting surface of the inflatable curtain comprises engaging mounting orifices disposed on the mounting surface with corresponding protrusions extending from the vehicle.

11. The method of claim 9, wherein the attaching element comprises a tether, wherein providing a tensioning force comprises actuating another tensioning mechanism, wherein each tensioning mechanism is coupled to an opposing end of the tether, wherein the tether is attached directly to the inflatable curtain.

12. The method of claim 9, wherein providing a tensioning force longitudinally along the mounting surface comprises providing a tensioning force longitudinally along a top edge of the inflatable curtain.

13. An airbag assembly, comprising:

an airbag including a mounting surface, the mounting surface configured to be coupled to a vehicle;

a one-way locking mechanism configured to be attached to a vehicle; and

a locking band extending through an opening in the one-way locking mechanism with a ratcheting configuration that permits the locking band to move linearly in one direction while impeding movement in the opposite direction;

wherein the locking band is coupled to the mounting surface to interconnect the mounting surface and the one-way locking mechanism such that tension is provided and maintained along the mounting surface and the locking band upon installation to maintain the airbag in a desired position.

14. The airbag assembly of claim 13, wherein the airbag comprises an inflatable curtain.

15. The airbag assembly of claim 13, wherein the mounting surface comprises an uninflatable edge of the inflatable curtain configured to be mounted adjacent a roof rail of a vehicle.

16. The airbag assembly of claim 15, wherein the mounting surface comprises a plurality of mounting orifices configured to receive corresponding protrusions extending from a vehicle.

17. A method for installing an inflatable curtain airbag, comprising:

positioning a mounting surface of an inflatable curtain in a mounting position adjacent the roof rail of a vehicle, wherein a locking band is coupled to the mounting surface;

attaching a one-way locking mechanism to the vehicle;

moving the locking band linearly through the one-way locking mechanism to provide a tensioning force longitudinally along the mounting surface of the inflatable curtain when the inflatable curtain is in the mounting position,

wherein the locking band and the one-way locking mechanism have a ratcheting configuration such that the locking band moves linearly in one direction while impeding movement in the opposite direction;

wherein the ratcheting configuration permits tension to be provided and maintained along the mounting surface and the locking band upon installation and to maintain the airbag in a desired position.

18. The method of claim 17, wherein positioning a mounting surface of the inflatable curtain comprises engaging mounting orifices disposed on the mounting surface with corresponding protrusions extending from the vehicle.

19. The method of claim 17, wherein providing a tensioning force longitudinally along the mounting surface comprises providing a tensioning force longitudinally along a top edge of the inflatable curtain.