Airbag module

• US 7,213,837 B2
• Filed: 12/15/2004
• Issued: 05/08/2007
• Est. Priority Date: 12/15/2004
• Status: Expired due to Fees

• Current Assignee: Takata Restraint Systems Incorporated (Ningbo Junsheng Investment Group Co., Ltd.)
• Original Assignee: Takata Restraint Systems Incorporated (Ningbo Junsheng Investment Group Co., Ltd.)
• Inventors: Moon, Steve, Clarke, Curtis D.
• Primary Examiner(s): Fleming; Faye M.
• Application Number:
  US11/011,063
• Publication Number:
  US 20060125215A1
• Time in Patent Office: 874 Days
• Field of Search: 280/728.3, 280/731, 280/743.1
• US Class Current: 280/731
• CPC Class Codes: B60R 21/20 Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
• 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

Abstract

An occupant protection device including a wrap for holding an inflatable air bag cushion in a folded shape. The wrap includes a tear seam forming a substantial “U” shape. The tear seam directs the initial airbag deployment toward the bottom of the airbag module and between the lower rim of a steering wheel and a driver. The wrap protects a fifth percentile female in close proximity to the lower rim of the steering wheel.

Claims

1. A driver side occupant protection device, comprising:

an airbag positioned in a steering wheel of a vehicle;

an inflator for providing inflation gas to inflate the airbag; and

a wrap initially covering the airbag when the airbag is in a folded position, the wrap including a tear seam configured to tear upon inflation of the airbag,

wherein the tear seam is configured to direct the airbag to deploy between a lower rim of the steering wheel and a driver of the vehicle, and

wherein the wrap includes a central region and a surrounding edge region, the entire tear seam being located only in the central region.

2. The driver side occupant protection device of claim 1, wherein the tear seam comprises a V shape.

3. The driver side occupant protection device of claim 1, wherein the tear seam is positioned approximately in the lower, center region of the wrap.

4. The driver side occupant protection device of claim 1, wherein the wrap comprises a single panel.

5. The driver side occupant protection device of claim 1, wherein the wrap includes three tear seams.

6. The driver side occupant protection device of claim 5, wherein the three tear seams are configured to form a substantial U shape.

7. The driver side occupant protection device of claim 1, wherein the wrap is positioned over the airbag between the folded portion of the airbag and the cover.

8. The driver side occupant protection device of claim 1, wherein the wrap comprises a woven fabric.

9. The driver side occupant protection device of claim 1, wherein the wrap is attached to the retainer.

15. The driver side occupant protection device of claim 1, wherein the tear seam includes three discrete portions forming a substantial U shape, the portions including a first portion forming a bottom portion and second and third portions extending from opposite ends of the first portion.

10. An airbag module, comprising:

an airbag;

an inflator for providing inflation gas to inflate the airbag; and

a wrap initially covering the airbag when the airbag is in a folded position, the wrap including a tear seam configured to tear open upon inflation of the airbag,

wherein the entire tear seam is configured to form a single substantially U-shaped seam extending along the lower, center region of the wrap.

11. The airbag module of claim 10, wherein the tear seam is positioned toward the bottom of the airbag module.

12. The airbag module of claim 10, wherein the wrap comprises a single panel.

18. The airbag module of claim 10, wherein the wrap includes a central region and a surrounding edge region, the entire tear seam being located only in the central region.

13. An airbag module, comprising:

an airbag;

an inflator for providing inflation gas to inflate the airbag; and

a wrap initially covering the airbag when the airbag is in a folded position, the wrap including a tear seam configured to tear open upon inflation of the airbag,

wherein the tear seam forms a substantial U shape extending along the lower, center region of the wrap, and

wherein the wrap includes three tear seams.

14. An airbag module, comprising:

an airbag;

an inflator for providing inflation gas to inflate the airbag; and

a wrap initially covering the airbag when the airbag is in a folded position, the wrap including a tear seam configured to tear open upon inflation of the airbag,

wherein the tear seam forms a substantial U shape extending along the lower, center region of the wrap, and

wherein the tear seam includes a bottom portion and first and second extending portions.

16. An airbag module, comprising:

an airbag;

an inflator for providing inflation gas to inflate the airbag; and

a wrap initially covering the airbag when the airbag is in a folded position, the wrap including a tear seam configured to tear open upon inflation of the airbag,

wherein the tear seam forms a substantial U shape extending along the lower, center region of the wrap, and

wherein the tear seam includes three discrete portions forming the substantial U shape, the portions including a first portion forming a bottom portion and second and third portions extending from opposite ends of the first portion.

17. An airbag module, comprising:

an airbag;

an inflator for providing inflation gas to inflate the airbag; and

a wrap initially covering the airbag when the airbag is in a folded position, the wrap including a tear seam configured to tear open upon inflation of the airbag,

wherein the tear seam forms a substantial U shape extending along the lower, center region of the wrap, and

wherein no portion of the tear seam is adjacent an edge of the wrap.