Airbag cushion assembly with horn switch pocket

• US 5,626,358 A
• Filed: 01/11/1996
• Issued: 05/06/1997
• Est. Priority Date: 01/11/1996
• Status: Expired due to Fees

• Current Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Original Assignee: Morton International Incorporated (Autoliv Incorporated)
• Inventors: Boyd, Kristen K. S., Ricks, Merle K.
• Primary Examiner(s): Culbreth, Eric D.
• Application Number:
  US08/587,855
• Time in Patent Office: 481 Days
• Field of Search: 280/743.1, 280/743.2, 280/731, 280/739, 200/61.54, 200/61.55
• US Class Current: 280/731
• CPC Class Codes: B60Q 5/003 mounted on the steering wheel
• CPC Class Codes: B60R 21/201 Packaging straps or envelopes for inflatable members
• CPC Class Codes: B60R 21/2035 using modules containing inflator, bag and cover attachable to the steering wheel as a complete sub-unit steering wheel covers with tear lines B60R21/21656; assembling of modules B60R21/217
• CPC Class Codes: B60R 21/217 Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together
• CPC Class Codes: B60R 21/23 Inflatable members B60R21/18 takes precedence; connection to inflation fluid source retainers B60R21/217

Abstract

An airbag cushion assembly including an airbag cushion, a cushion strap and a horn switch pocket for use with a driver side airbag module. The horn switch pocket is for mounting a horn switch assembly and is secured to a tether of the cushion strap. The cushion strap retains the airbag cushion in a deflated, folded position prior to mounting the airbag cushion assembly within an airbag module and prior to inflation of the airbag cushion. The horn switch pocket is positioned on the tether so as to be tightly located between the tether and a horn activation face of an airbag module cover of the airbag module. The horn switch pocket can be made from the same material as the tether and the airbag cushion, and the horn switch pocket is sewn to the tether. According to one variation of the present invention, an airbag cushion assembly is provided having an airbag cushion and a horn pocket sewn directly to the airbag cushion.

Claims

1. An airbag cushion assembly for use in an airbag module, the assembly comprising:

an airbag cushion having a collar defining an open mouth for receiving inflation fluid; and

a horn switch pocket sized to contain a horn switch assembly, the horn switch pocket having a pocket opening sized to receive a horn switch assembly, the horn switch pocket secured to the airbag cushion.

2. The airbag cushion assembly of claim 1 further comprising:

a retainer ring secured to the collar of the airbag cushion.

3. The airbag cushion assembly of claim 1 further comprising:

a horn switch assembly contained within the horn switch pocket.

4. The airbag cushion assembly of claim 1 wherein:

the horn switch pocket having a marginal edge, at least a portion of the marginal edge secured to the airbag cushion.

5. The airbag cushion assembly of claim 4 wherein:

the horn switch pocket being generally rectangular with the marginal edge being divided into two longer opposed edges and two shorter opposed edges, the two longer opposed edges and one shorter opposed edge comprising the portion of the marginal edge secured to the airbag cushion, and the other shorter opposed edge forming the pocket opening.

6. The airbag cushion assembly of claim 5 wherein:

the portion of the marginal edge of the horn switch pocket is secured to the airbag cushion by stitching.

7. The airbag cushion assembly of claim 1 further comprising:

a cushion strap including a tether having a first end extending from the collar of the airbag cushion, the airbag cushion being folded, the tether bridging across the folded airbag cushion and having a second end secured to the collar of the airbag cushion to retain the airbag cushion in a folded condition, a weakened portion of the tether breakable upon inflation of the airbag cushion; and

the horn switch pocket having a marginal edge, at least a portion of the marginal edge secured to the tether between the first end and the second end.

8. The airbag cushion assembly of claim 7 wherein:

the cushion strap having a collar secured to the collar of the airbag cushion, the first end of the tether extending from the collar of the cushion strap, and the second end of the tether secured to the collar of the cushion strap.

9. The airbag cushion assembly of claim 8 wherein:

the horn switch pocket being generally rectangular with the marginal edge being divided into two longer opposed edges and two shorter opposed edges, the two longer opposed edges and one shorter opposed edge comprising the portion of the marginal edge secured to the tether, and the other shorter opposed edge forming the pocket opening.

10. The airbag cushion assembly of claim 9 wherein:

the portion of the marginal edge of the horn switch pocket is secured to the tether of the cushion strap by stitching.

11. A cushion strap for use with a folded, inflatable airbag cushion having a collar defining an open mouth for receiving inflation fluid, the cushion strap comprising:

a tether having a first end securable to the collar of the airbag cushion, the tether sized to bridge across the folded airbag cushion and having a second end securable to the collar of the airbag cushion to retain the airbag cushion in a folded condition, a weakened portion of the tether breakable upon inflation of the airbag cushion; and

a horn switch pocket sized to contain a horn switch assembly and having a marginal edge and a pocket opening sized to receive a horn switch assembly, at least a portion of the marginal edge secured to the tether between the first end and the second end of the tether.

12. The airbag cushion assembly of claim 11 further comprising:

a horn switch assembly contained within the horn switch pocket.

13. The cushion strap of claim 11 wherein:

the cushion strap having a collar securable to the collar of the airbag cushion, the first end of the tether extending from the collar of the cushion strap, and the second end of the tether securable to the collar of the cushion strap.

14. The cushion strap of claim 13 wherein:

the horn switch pocket being generally rectangular with the marginal edge being divided into two longer opposed edges and two shorter opposed edges, the two longer opposed edges and one shorter opposed edge comprising the portion of the marginal edge secured to the tether, and the other shorter opposed edge forming the pocket opening.

15. The cushion strap of claim 14 wherein:

the portion of the marginal edge of the horn switch pocket is secured to the tether of the cushion strap by stitching.

16. An airbag cushion assembly for use in an airbag module, the assembly comprising:

a folded, inflatable airbag cushion having a collar defining an open mouth for receiving inflation fluid;

a retainer ring secured to the collar of the airbag cushion;

a cushion strap including a tether and a collar, the collar secured to the retainer ring and the tether having a first end extending from the collar of the cushion strap, the tether bridging across the folded airbag cushion and having a second end secured to the retainer ring to retain the airbag cushion in a folded condition, a weakened portion of the tether being breakable upon inflation of the airbag cushion; and

a horn switch pocket sized to contain a horn switch assembly and having a pocket opening sized to receive a horn switch assembly, the horn switch pocket secured to the airbag cushion.

17. The airbag cushion assembly of claim 16 wherein:

the horn switch pocket having a marginal edge, at least a portion of the marginal edge secured to the tether between the first end and the second end.

18. The airbag cushion assembly of claim 17 wherein:

the horn switch pocket being generally rectangular and having a marginal edge divided into two longer opposed edges and two shorter opposed edges, the two longer opposed edges and one shorter opposed edge comprising the portion of the marginal edge secured to the tether, and the other shorter opposed edge forming the pocket opening.

19. The airbag cushion assembly of claim 18 wherein:

the two longer opposed edges and one shorter opposed edge of the marginal edge of the horn switch pocket being secured to the tether of the cushion strap by stitching.

20. The airbag cushion assembly of claim 19 wherein:

the collar of the airbag cushion having a plurality of fastener receiving holes;

the collar of the cushion strap having a plurality of fastener receiving holes;

a plurality of fasteners extending from the retainer ring through the plurality of fastener receiving holes in the collar of the airbag cushion and through the plurality of fastener receiving holes in the collar of the cushion strap to secure the collar of the airbag cushion and the collar of the cushion strap to the retainer ring; and

two tabs extending from the second end of the tether, each tab defining a fastener receiving hole positioned around a fastener of the plurality of fasteners extending from the retainer ring to secure the second end of the tether to the retainer ring, the weakened portion of the tether comprising the two tabs.

21. The airbag cushion assembly of claim 20, wherein:

the horn switch pocket positioned on the tether of the cushion strap so that the horn switch pocket will be located between the tether and a horn activation face of an airbag module cover of an airbag module when the airbag cushion assembly is mounted in the airbag module.

22. The airbag cushion assembly of claim 21 further comprising:

a horn switch assembly contained within the horn switch pocket.