Apparatus and method for rapid airbag component installation

• US 20020125705A1
• Filed: 03/06/2001
• Published: 09/12/2002
• Est. Priority Date: 03/06/2001
• Status: Active Grant

• Current Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Original Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Inventors: Wong, Hung Sung, Thomas, Rachel
• Granted Patent: US 6,851,710 B2
• Time in Patent Office: Days
• US Class Current: 280/743.2
• 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 21/2338 Tethers

Abstract

Attachment assemblies are provided for attaching airbag components, such as inflatable curtain modules and tethers, to surfaces inside a vehicle. The attachment assemblies may include a clip with a tapered stud having a circular or rectangular cross-sectional shape that can be pressed into a corresponding opening of the vehicle surface. Each of the tapered studs may have a plurality of branches designed to reduce the force required to insert the tapered stud into the corresponding opening. Additionally, each clip may have a flange with a contoured shape designed to fit closely to its associated vehicle surface and to position the airbag component properly for deployment. A tether may be routed, or removably attached to ensure positioning for proper deployment, through the use of one or more attachment assemblies that permit breakaway of the tether from each attachment assembly. Curtain modules may be more permanently affixed to the attachment assemblies.

Claims

1. An attachment assembly for attaching a tether for an airbag assembly to a vehicle surface, the attachment assembly comprising:

a tether comprising a first end affixed to a cushion member of the airbag assembly, a second end anchored at an anchoring point of a vehicle, and an intermediate portion positioned generally between the first end and the second end; and

a tether attachment configured to attach the intermediate portion to a vehicle surface, the tether attachment having a fastening strength selected to permit detachment of the intermediate portion from the vehicle surface during deployment of the cushion member.

2. The attachment assembly of claim 1, wherein the tether attachment comprises a clip removably attachable to the intermediate portion of the tether, the clip being configured to remain affixed to the vehicle surface during deployment of the airbag assembly.

3. The attachment assembly of claim 2, wherein the clip comprises a protrusion having a compressed configuration and an uncompressed configuration, the protrusion being sized to fit through an opening in the vehicle surface in the compressed configuration, but not in the uncompressed configuration, the protrusion having a lengthwise direction in which the protrusion can be moved for installation in the opening.

4. The attachment assembly of claim 3, wherein the protrusion comprises a tapered stud with flexible branches, the branches being compressible to permit entry of the tapered stud into the opening.

5. The attachment assembly of claim 3, wherein the clip comprises a mounting surface shaped to fit the intermediate portion of the tether.

6. The attachment assembly of claim 5, wherein the mounting surface is substantially flat and is oriented substantially perpendicular to the lengthwise direction.

7. The attachment assembly of claim 5, wherein the mounting surface is substantially flat and is oriented substantially parallel to the lengthwise direction, the mounting surface being offset from the protrusion by an angled extension extending between the protrusion and the mounting surface.

8. The attachment assembly of claim 5, wherein at least a portion of the mounting surface is curved.

9. The attachment assembly of claim 3, wherein the protrusion comprises a substantially circular cross-sectional shape perpendicular to the lengthwise direction.

10. The attachment assembly of claim 3, wherein the protrusion comprises a substantially rectangular cross-sectional shape perpendicular to the lengthwise direction.

11. The attachment assembly of claim 1, wherein the tether attachment comprises a staple piercing the intermediate portion of the tether, the staple being sized to tear through the tether to release the tether during deployment of the airbag assembly.

12. The attachment assembly of claim 1, wherein the tether attachment comprises a thread piercing the intermediate portion of the tether, the thread being configured to tear through the tether to release the tether during deployment of the airbag assembly.

14. The attachment assembly of claim 13, wherein the curtain module further comprises a flexible tab having a hole configured to receive a rigid mechanical fastener, wherein the rigid mechanical fastener is configured to be attached to the roof rail.

15. The attachment assembly of claim 13, wherein the curtain module is configured to be attached to the roof rail without rigid mechanical fasteners.

16. The attachment assembly of claim 13, wherein the clip further comprises ahead positioned within the curtain module, the head being attached to the protrusion by a shank extending outward from the head through a hole in the curtain module, the hole being sized to interfere with passage of the head through the hole.

17. The attachment assembly of claim 16, further comprising a washer disposed on the shank, wherein the washer is configured to grip the shank to keep the protrusion from sliding into the curtain module through the hole prior to installation of the protrusion within the opening of the roof rail.

18. The attachment assembly of claim 13, wherein the clip comprises a substantially flat mounting surface oriented substantially perpendicular the lengthwise direction.

19. The attachment assembly of claim 13, wherein the clip comprises a substantially flat mounting surface oriented substantially parallel to the lengthwise direction, the mounting surface being offset from the protrusion by an angled extension affixed to the protrusion and the mounting surface.

20. The attachment assembly of claim 13, wherein the clip comprises a mounting surface, at least a portion of which is curved.

21. The attachment assembly of claim 13, wherein the protrusion comprises a substantially circular cross-sectional shape perpendicular to the lengthwise direction.

22. The attachment assembly of claim 13, wherein the protrusion comprises a substantially rectangular cross-sectional shape perpendicular to the lengthwise direction.

23. The attachment assembly of claim 13, further comprising a staple piercing the curtain module and the clip to attach the curtain module to the clip.

24. The attachment assembly of claim 13, further comprising a thread piercing the curtain module and the clip to attach the curtain module to the clip.

26. The attachment assembly of claim 25, wherein the shank extends from the first side in substantially perpendicular fashion.

27. The attachment assembly of claim 25, wherein the tapered stud comprises a plurality of flexible branches extending generally outward, each of the flexible branches being compressible.

28. The attachment assembly of claim 25, wherein the airbag component comprises a tether.

29. The attachment assembly of claim 25, wherein the airbag component comprises a curtain module.

30. The attachment assembly of claim 25, wherein the flange is pierced to permit attachment of the mounting surface to the airbag component.

13. An attachment assembly for attaching a curtain module to a roof rail having an opening formed therein, the attachment assembly comprising:

a curtain module configured to be affixed to the roof rail; and

a clip attached to the curtain module, the clip comprising a protrusion having a compressed configuration and an uncompressed configuration, wherein the protrusion is configured to be insertable, in a lengthwise direction of the protrusion, into the opening when the protrusion is in the compressed configuration, but not when the protrusion is in the uncompressed configuration.

25. A clip for attaching an airbag component to a vehicle surface, the clip comprising:

a tapered stud having a compressed configuration and an uncompressed configuration, the tapered stud being configured to fit into an opening of the vehicle surface in the compressed configuration but not in the uncompressed configuration;

a shank affixed to the tapered stud, the shank being sized to fit into the opening; and

a flange comprising a first side and a second side opposite the first side, the first and second sides each having at least a substantially flat portion, wherein the first side is attached to the shank, and wherein the second side comprises a mounting surface configured to receive the airbag component.

31. An inflatable curtain assembly, comprising:

a plurality of airbag components, wherein each airbag component is configured to be attached to a vehicle surface comprising one of a roof rail, an A pillar, and a B pillar of a vehicle; and

a plurality of clips attached to the mounting portions, each clip comprising a protrusion, each protrusion being compressible to enable insertion of the clip into an opening in a vehicle surface.

32. The inflatable curtain assembly of claim 31, wherein each clip comprises a flange having a first side and a second side opposite the first side, the first and second sides each having at least a substantially flat portion, wherein the first side is connected to the protrusion, and wherein the second side comprises a mounting surface configured to receive one of the airbag components.

33. The inflatable curtain assembly of claim 31, wherein the airbag components comprise a curtain module and a tether.

34. The inflatable curtain assembly of claim 33, wherein the curtain module is attached to a roof rail, and wherein the tether is attached to an A pillar.

35. The inflatable curtain assembly of claim 34, wherein the curtain module is attached to the roof rail with a fastening strength selected to keep the curtain module attached during deployment of the inflatable curtain assembly, and wherein an intermediate portion of the tether is attached to the A pillar with a fastening strength selected to permit detachment of the tether from the A pillar during deployment of the inflatable curtain assembly.

37. The method of claim 36, wherein the clip further comprises a flange having a first side and a second side opposite the first side, the first and second sides each having at least a substantially flat portion, wherein the first side is connected to the protrusion, and wherein the second side comprises a mounting surface configured to receive the airbag component.

38. The method of claim 36, wherein affixing the clip to the airbag component comprises providing a fastening strength selected to permit detachment of the airbag component from the clip during deployment of the airbag component.

39. The method of claim 36, wherein the airbag component comprises a curtain module, and wherein the vehicle surface comprises a roof rail.

40. The method of claim 36, wherein the airbag component comprises a tether, and wherein the vehicle surface comprises an A pillar.

36. A method of manufacturing an attachment assembly for attaching an airbag component to a vehicle surface having an opening formed therein, the method comprising:

providing an airbag component;

providing a clip comprising a protrusion having a compressed configuration and an uncompressed configuration, wherein the protrusion is configured to be insertable in an opening in a vehicle surface in the compressed configuration, but not in the uncompressed configuration; and

affixing the clip to the airbag component such that the protrusion is positioned to enter the opening, wherein the vehicle surface comprises one of a roof rail, an A pillar and a B pillar.