Inflatable airbag assemblies with alignment apertures

• US 8,056,924 B2
• Filed: 08/20/2009
• Issued: 11/15/2011
• Est. Priority Date: 08/20/2009
• Status: Active Grant

• Current Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Original Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Inventors: Hatfield, Mark S., Cheal, Blake
• Primary Examiner(s): Dickson; Paul N
• Assistant Examiner(s): Coker; Robert A
• Application Number:
  US12/544,952
• Publication Number:
  US 20110042923A1
• Time in Patent Office: 817 Days
• Field of Search: 280/728.2, 280/730.2, 280/733
• US Class Current: 280/730.2
• CPC Class Codes: B60R 21/201 Packaging straps or envelopes for inflatable members
• 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

Abstract

Inflatable airbag cushions often have modular components attached to them after the main airbag has been manufactured. Such modular components can include external tethers, mounting tabs, mounting assemblies, and fill tubes. Often, these modular components are positioned at predetermined locations on the airbag. Further, the modular components typically have a predetermined orientation. Employing an alignment aperture and at least one landmark on the airbag can allow a modular component to be positioned correctly along at least one axis of the airbag. Landmarks can include seams, edges, folds, and marks, such as ink from printing. Additional apertures, landmarks and/or hardware can be used to assure proper orientation of the modular component on the airbag. The modular component can be coupled to the airbag by stitching.

Claims

1. An inflatable airbag assembly, comprising:

an inflatable curtain airbag comprising a first landmark; and

a mounting assembly, comprising;

a mounting member; and

a connecting member coupled to the mounting member and the inflatable curtain airbag,

wherein the connecting member comprises an alignment aperture located at a predetermined location such that when the alignment aperture is at least partially aligned with the first landmark, the mounting assembly is located at a predetermined location on the inflatable airbag along at least one axis.

2. The inflatable airbag assembly of claim 1, wherein the mounting assembly further comprises a wrapping member that is configured to wrap around an external surface of an inflatable curtain airbag and retain the airbag in a rolled configuration, and

wherein the wrapping member and the connecting member each comprise alignment apertures, and wherein the connecting member and the wrapping member are positioned on the mounting assembly such that the alignment apertures at least partially overlap.

3. The inflatable airbag assembly of claim 1, wherein the landmark comprises a seam.

4. The inflatable airbag assembly of claim 1, wherein the landmark comprises an ink mark.

5. The inflatable airbag assembly of claim 1, wherein the inflatable airbag comprises a second landmark that denotes a predetermined position along a second axis of the inflatable airbag.

6. The inflatable airbag assembly of claim 1,

wherein the inflatable curtain airbag further comprises a second landmark;

and,

an external tether configured to be coupled to the inflatable airbag and extending to a vehicle structure, wherein the external tether comprises a second alignment aperture that is located at a predetermined position on the external tether, such that when the second alignment aperture is aligned with the second landmark on the inflatable airbag, the external tether is located at a predetermined location on the inflatable airbag along at least one axis.

7. The inflatable airbag assembly of claim 6, wherein the first landmark and the second landmark comprise different portions of a contiguous landmark.

8. The inflatable airbag assembly of claim 7, wherein the contiguous landmark comprises a perimeter seam.

9. The inflatable airbag assembly of claim 1, wherein the mounting assembly further comprises a wrapping member that is configured to wrap around an external surface of an inflatable curtain airbag and retain the airbag in a rolled configuration, and

wherein the wrapping member comprises an alignment aperture, and wherein the connecting member and the wrapping member are positioned on the mounting assembly such that their respective alignment apertures at least partially overlap.

10. The inflatable airbag assembly of claim 1, wherein the assembly further comprises an inflator fill tube that is coupled to the inflatable airbag, and wherein the fill tube comprises a second alignment aperture that is located at a predetermined position on the inflator fill tube such that when the second alignment aperture is aligned with a second landmark on the inflatable airbag, the inflator fill tube is located at a predetermined location on the inflatable airbag along at least one axis.

11. The inflatable airbag assembly of claim 1, wherein the inflatable airbag comprises a second landmark that denotes a predetermined position along a second axis of the inflatable airbag.

12. A method of manufacturing an inflatable airbag assembly, the method comprising the steps of:

providing an inflatable airbag comprising a first landmark at a predetermined location;

providing a modular component comprising an alignment aperture at a predetermined location placing the modular component on the inflatable airbag such that a portion of the inflatable airbag is visible through the alignment aperture;

aligning the alignment aperture and the landmark along at least one axis of the inflatable airbag such that a portion of the landmark is visible within the alignment aperture;

orienting the modular component in a predetermined orientation relative to the inflatable airbag; and

coupling the modular component to the inflatable airbag, while viewing the landmark through the alignment aperture, such that the modular component is retained in the predetermined location and retains the predetermined orientation.

13. The method of claim 12, wherein the inflatable airbag comprises a second landmark.

14. The method of claim 13, wherein the second landmark is positioned in relation to the first landmark such that at least a portion of both the first and the second landmarks can be viewed through the alignment aperture at the same time.

15. The method of claim 13, further comprising the step of aligning the alignment aperture of the modular component with the first and second landmarks.

16. The method of claim 13, wherein a second alignment aperture is located at a predetermined location on the modular component.

17. The method of claim 16, further comprising the step of aligning the first alignment aperture of the modular component with the first landmark and aligning the second alignment aperture with the second landmark.

18. The method of claim 13, further comprising the step of providing a second modular component having an alignment aperture located at a predetermined location on the second modular component.

19. The method of claim 18, further comprising the step of aligning the alignment aperture of the second modular component with the second landmark such that a portion of the second landmark is visible through the alignment aperture of the second modular component.

20. An inflatable airbag assembly, comprising:

an inflatable airbag comprising a first landmark at a predetermined location; and

a modular component having an alignment aperture,

wherein the alignment aperture is located at a predetermined location on the modular component, and

wherein the alignment aperture has a diameter within a range from about 3 mm to about 20 mm,

whereby when the alignment aperture is at least partially aligned with the first landmark, a portion of the inflatable airbag is visible through the alignment aperture, and the modular component is located at a predetermined location on the inflatable airbag and with a predetermined orientation along at least one axis.

21. The inflatable airbag assembly of claim 20, wherein the first landmark comprises a seam.

22. The inflatable airbag assembly of claim 20, wherein the first landmark comprises an ink mark.

23. The inflatable airbag assembly of claim 20, wherein the inflatable airbag comprises a second landmark that denotes a predetermined position along a second axis of the inflatable airbag.

24. The inflatable airbag assembly of claim 23, wherein the first landmark and the second landmarks comprise different portions of a contiguous landmark.

25. The inflatable airbag assembly of claim 24, wherein the contiguous landmark comprises a perimeter seam.

26. The inflatable airbag assembly of claim 20, wherein the modular component comprises an external tether.

27. The inflatable airbag assembly of claim 20, wherein the modular component comprises an inflator fill tube.

28. The inflatable airbag assembly of claim 27, wherein the inflator fill tube is coupled to the inflatable airbag, and wherein the fill tube comprises a second alignment aperture that is located at a predetermined position on the inflator fill tube such that when the second alignment aperture is aligned with a second landmark on the inflatable airbag, the inflator fill tube is located at a predetermined location on the inflatable airbag along at least one axis.

29. The inflatable airbag assembly of claim 20, wherein the inflatable airbag comprises an inflatable curtain airbag.

30. The inflatable airbag assembly of claim 29, wherein the modular component comprises a mounting assembly, comprising:

a mounting member; and

a connecting member coupled to the mounting member and the inflatable airbag.

31. The inflatable airbag assembly of claim 30, wherein the mounting assembly further comprises a wrapping member that is configured to wrap around an external surface of an inflatable curtain airbag and retain the airbag in a rolled configuration, and

wherein the wrapping member and the connecting member each comprise alignment apertures, and wherein the connecting member and the wrapping member are positioned on the mounting assembly such that the alignment apertures at least partially overlap.