Inflatable curtain airbag with an integrated pillar guide

• US 8,500,162 B2
• Filed: 12/22/2011
• Issued: 08/06/2013
• Est. Priority Date: 12/22/2011
• Status: Active Grant

• Current Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Original Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Inventors: Moffitt, Robert, DePottey, Timothy A.
• Primary Examiner(s): Ilan, Ruth
• Assistant Examiner(s): Sliteris, Joselynn Y
• Application Number:
  US13/335,390
• Publication Number:
  US 20130161930A1
• Time in Patent Office: 593 Days
• Field of Search: 280/730.2
• US Class Current: 280/730.2
• CPC Class Codes: B60R 2021/161 characterised by additional means for controlling deployment trajectory
• CPC Class Codes: B60R 21/232 Curtain-type airbags deploying mainly in a vertical direction from their top edge

Abstract

Inflatable curtain airbags deploy smoothly with an integrated pillar guide that minimizes interference with a vehicle pillar. The integrated pillar is a thin piece of semi-flexible, semi-rigid material housed in a pocket that is coupled to a curtain airbag.

Claims

1. An inflatable curtain airbag assembly, comprising:

an inflatable curtain airbag,

wherein the inflatable curtain airbag comprises a lower portion and an upper portion that is above the lower portion after deployment of the inflatable curtain airbag,

wherein the inflatable curtain airbag comprises an inboard-facing face and an outboard-facing face; and

a pillar guide comprising a non-inflatable, semi-flexible, semi-rigid ramp coupled to an extension of the inflatable curtain airbag to move with the extension from a packaged state to a deployed state,

wherein the extension is coupled to the inflatable curtain airbag at the upper portion of the inflatable curtain airbag,

wherein the pillar guide is located and configured such that, upon deployment of the inflatable curtain airbag, the pillar guide is positioned outboard with respect to the inflatable curtain airbag such that the pillar guide spans over a top of a pillar of a vehicle during an early stage of inflation of the inflatable curtain airbag,

wherein the ramp is sufficiently flexible to be folded or rolled when stored and mounted for use in the packaged state and to be unfolded or unrolled to the deployed state upon deployment of the inflatable curtain airbag,

wherein the ramp is sufficiently rigid to guide the deployment of the inflatable curtain airbag to minimize interference between the inflatable curtain airbag and the pillar, and

wherein both the ramp and the extension of the inflatable curtain are rolled or folded around the inflatable curtain airbag when in the packaged state and are both configured to be unfolded or unrolled together to the deployed state in which both the ramp and the extension span over the top of the pillar of the vehicle.

2. The inflatable airbag assembly of claim 1, wherein the extension comprises a pocket comprising two opposing sides, wherein the ramp is located within the pocket.

3. The inflatable airbag assembly of claim 2, wherein the pocket has an opening that is closed with a closure to confine the ramp within the pocket.

4. The inflatable airbag assembly of claim 2, wherein the ramp is woven into the pocket.

5. The inflatable airbag assembly of claim 1, wherein the ramp is coupled to the extension via stitching.

6. The inflatable airbag assembly of claim 1, wherein the inflatable curtain airbag has an outboard-facing face that faces toward the extension.

7. The inflatable airbag assembly of claim 1, wherein the inflatable curtain airbag has an outboard-facing face that faces toward the ramp.

8. The inflatable airbag assembly of claim 1, further comprising a second ramp, wherein the extension is positioned between the ramp and the second ramp, wherein the inflatable curtain airbag has an outboard-facing face that faces toward the ramp.

9. The inflatable airbag assembly of claim 1, wherein a void is defined by the top of the pillar and a headliner of the vehicle, wherein the ramp is sufficiently rigid to prevent the curtain airbag from entering the void.

10. The inflatable airbag assembly of claim 1, wherein a void is defined by the top of the pillar and a headliner of the vehicle, wherein the ramp is sufficiently rigid to enable the curtain airbag to push against the ramp via the extension without being pushed substantially into the void.

11. The inflatable airbag assembly of claim 1, wherein the ramp is folded or rolled around the upper portion when stored and mounted for use, and wherein the ramp is sufficiently flexible to be unfolded or unrolled upon deployment of the inflatable curtain airbag and to have a relatively vertical orientation.

12. The inflatable airbag assembly of claim 1, wherein the extension is coupled to the inflatable curtain airbag via a bridge that is non-inflatable.

13. An inflatable curtain airbag assembly, comprising:

an inflatable curtain airbag,

wherein the inflatable curtain airbag comprises a lower portion and an upper portion that is above the lower portion after deployment of the inflatable curtain airbag,

wherein the inflatable curtain airbag comprises an inboard-facing face and an outboard-facing face; and

a pillar guide comprising a non-inflatable, semi-flexible, semi-rigid ramp positioned within a pocket,

wherein the pocket is coupled to the upper portion at a location and with a configuration that enables the pillar guide, upon deployment of the inflatable curtain airbag, to be deployed outboard with respect to the inflatable curtain airbag such that the pillar guide is facing the outboard-facing face and such that the pillar guide spans over a top of a pillar of a vehicle before inflation of the inflatable curtain airbag,

wherein the ramp is sufficiently flexible to be folded or rolled when stored and mounted for use and to be unfolded or unrolled upon deployment of the inflatable curtain airbag, and

wherein the ramp is sufficiently rigid for the inflatable curtain airbag to push against the ramp via the pocket, during inflation, and to guide the deployment of the inflatable curtain airbag to minimize interference between the inflatable curtain airbag and the pillar.

14. The inflatable airbag assembly of claim 13, wherein the pocket has an opening that is closed with a closure to confine the ramp within the pocket.

15. The inflatable airbag assembly of claim 13, wherein the ramp is woven into the pocket.

16. The inflatable airbag assembly of claim 13, wherein a void is defined by the top of the pillar and a headliner of the vehicle, wherein the ramp is sufficiently rigid to prevent the curtain airbag from entering the void.

17. The inflatable airbag assembly of claim 13, wherein a void is defined by the top of the pillar and a headliner of the vehicle, wherein the ramp is sufficiently rigid to enable the curtain airbag to push against the ramp via the pocket without being pushed substantially into the void.

18. The inflatable airbag assembly of claim 13, wherein the pocket is coupled to the inflatable curtain airbag via a bridge that is non-inflatable.

19. An inflatable curtain airbag assembly, comprising:

an inflatable curtain airbag,

wherein the inflatable curtain airbag comprises a lower portion and an upper portion that is above the lower portion after deployment of the inflatable curtain airbag,

wherein the upper portion is rolled or folded around the lower portion when the assembly is stored and ready for use,

wherein the inflatable curtain airbag comprises an inboard-facing face and an outboard-facing face; and

a pillar guide comprising a non-inflatable, semi-flexible, semi-rigid ramp positioned within a pocket,

wherein the pocket is coupled to the upper portion at a location and with a configuration that enables the pillar guide, upon deployment of the inflatable curtain airbag, to be deployed outboard with respect to the inflatable curtain airbag such that the pillar guide is facing the outboard-facing face and such that the pillar guide spans over a top of a pillar of a vehicle before inflation of the inflatable curtain airbag,

wherein the ramp is folded or rolled around the upper portion when stored and mounted for use,

wherein the ramp is sufficiently flexible to be unfolded or unrolled upon deployment of the inflatable curtain airbag and to have a relatively vertical orientation, and

wherein the ramp is sufficiently rigid for the inflatable curtain airbag to push against the ramp via the pocket, during inflation, and to guide the deployment of the inflatable curtain airbag to minimize interference between the inflatable curtain airbag and the pillar.

20. The inflatable airbag assembly of claim 19, wherein the pocket has an opening that is closed with a closure to confine the ramp within the pocket.

21. The inflatable airbag assembly of claim 19, wherein the ramp is woven into the pocket.

22. The inflatable airbag assembly of claim 19, wherein a void is defined by the top of the pillar and a headliner of the vehicle, wherein the ramp is sufficiently rigid to prevent the curtain airbag from entering the void.

23. The inflatable airbag assembly of claim 19, wherein a void is defined by the top of the pillar and a headliner of the vehicle, wherein the ramp is sufficiently rigid to enable the curtain airbag to push against the ramp via the pocket without being pushed substantially into the void.

24. The inflatable airbag assembly of claim 19, wherein the pocket is coupled to the inflatable curtain airbag via a bridge that is non-inflatable.

25. The inflatable airbag assembly of claim 19,

wherein the inflatable curtain airbag has sufficient length to span across at least three pillars,

wherein the pocket is coupled to the upper portion at a location and with a configuration that enables the pillar guide, upon deployment of the inflatable curtain airbag, to be deployed outboard with respect to the inflatable curtain airbag such that the pillar guide is facing the outboard-facing face and such that the pillar guide spans over a top of one of a B-pillar and a C-pillar of a vehicle before inflation of the inflatable curtain airbag.

26. An inflatable curtain airbag assembly, comprising:

an inflatable curtain airbag,

wherein the inflatable curtain airbag comprises a lower portion and an upper portion that is above the lower portion after deployment of the inflatable curtain airbag,

wherein the inflatable curtain airbag comprises an inboard-facing face and an outboard-facing face; and

a pillar guide comprising a non-inflatable, semi-flexible, semi-rigid ramp coupled to an extension of the inflatable curtain airbag,

wherein the extension is coupled to the inflatable curtain airbag at the upper portion of the inflatable curtain airbag,

wherein the pillar guide is located and configured such that, upon deployment of the inflatable curtain airbag, the pillar guide is positioned outboard with respect to the inflatable curtain airbag such that the pillar guide spans over a top of a pillar of a vehicle during an early stage of inflation of the inflatable curtain airbag,

wherein the ramp is sufficiently flexible to be folded or rolled when stored and mounted for use and to be unfolded or unrolled upon deployment of the inflatable curtain airbag,

wherein the ramp is sufficiently rigid to guide the deployment of the inflatable curtain airbag to minimize interference between the inflatable curtain airbag and the pillar, and

wherein the extension comprises a pocket comprising two opposing sides, wherein the ramp is located within the pocket.

27. The inflatable airbag assembly of claim 26, wherein the pocket has an opening that is closed with a closure to confine the ramp within the pocket.

28. The inflatable airbag assembly of claim 26, wherein the ramp is woven into the pocket.