Airbag cover deployment flaps

• US 6,874,810 B2
• Filed: 04/03/2002
• Issued: 04/05/2005
• Est. Priority Date: 04/03/2002
• Status: Active Grant

• Current Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Original Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Inventors: Soderquist, Quin
• Primary Examiner(s): Fischmann, Bryan
• Application Number:
  US10/115,856
• Publication Number:
  US 20030189319A1
• Time in Patent Office: 1,098 Days
• Field of Search: 280/728.2, 280/728.3, 280/730.1, 280/731, 280/732
• US Class Current: 280/728.3
• CPC Class Codes: B60R 2021/161 characterised by additional means for controlling deployment trajectory
• CPC Class Codes: B60R 21/201 Packaging straps or envelopes for inflatable members
• 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

Abstract

An apparatus is provided to reinforce an airbag while it is deploying through an airbag cover. An undeployed airbag is wrapped in a cover deployment flap that may be a thin piece of material. The cover deployment flap is located between the airbag and the airbag cover. As the airbag deploys, the cover deployment flap remains between the airbag and the airbag cover until the airbag cover is sufficiently open. The cover deployment flap may have multiple folded configurations to wrap the undeployed airbag. The cover deployment flap may further include an overlap that allows the airbag to release from the cover deployment flap once the airbag cover is open.

Claims

1. An airbag reinforcing member, comprising:

a first cover deployment flap configured to be selectively disposed between an undeployed airbag and an airbag cover, wherein the cover deployment flap is configured to receive a stress induced by the airbag as it is deployed through the airbag cover; and

a second cover deployment flag that contacts the bottom of the airbag, wherein the first cover deployment flap and the second cover deployment flap are configured to have an overlap that has a generally rectangular share when the airbag is undeployed.

2. The airbag reinforcing member, as recited in claim 1, wherein the first cover deployment flap has a first end and a second end, wherein the first cover deployment flap substantially enwraps a first portion of the airbag and the second cover deployment flap substantially enwraps a second portion of the airbag.

3. The airbag reinforcing member, as recited in claim 2, wherein the first portion and the second portion are generally equal.

4. The airbag reinforcing member, as recited in claim 1, wherein the first cover deployment flap is configured to remain disposed between the airbag and the airbag cover during expansion of the airbag through the airbag cover.

5. The airbag reinforcing member, as recited in claim 1, wherein the overlap is configured to be substantially situated between the undeployed airbag and the airbag cover.

6. The airbag reinforcing member, as recited in claim 5, wherein the overlap of the first cover deployment flap and the second cover deployment flap is configured to be maintained until the airbag substantially opens a tear seam in the airbag cover.

7. The airbag reinforcing member, as recited in claim 1, wherein the first cover deployment flap enwraps a first portion of the airbag in a “

C”

shaped configuration and the second cover deployment flap enwraps a second portion of the airbag in a “

C”

shaped configuration.

8. The airbag reinforcing member, as recited in claim 7, wherein the “

C”

shaped configuration of the first portion and the “

C”

shaped configuration of the second portion have an overlap, wherein the overlap is substantially situated between the undeployed airbag and the airbag cover.

9. The airbag reinforcing member, as recited in claim 1, wherein the first cover deployment flap has an opening location that is situated substantially parallel to a fold seam in the airbag.

10. The airbag reinforcing member, as recited in claim 1, wherein the first cover deployment flap is integrally coupled to the airbag.

11. The airbag reinforcing member, as recited in claim 1, wherein the first cover deployment flap is comprised of the same material as the airbag.

12. The airbag reinforcing member, as recited in claim 1, wherein the first cover deployment flap is generally rectangular.

13. A reinforced airbag comprising:

an airbag having a folded configuration and deployed configuration; and

a first cover deployment flap and a second cover deployment flap that contacts the bottom of the airbag, wherein the first cover deployment flap and the second cover deployment flap generally enwrap the airbag in the folded configuration and reinforces the airbag as it deploys through an airbag cover, and wherein the first cover deployment flap and the second cover deployment flap are configured to have an overlap that has a generally rectangular shape when the airbag is in the folded configuration.

14. The reinforced airbag, as recited in claim 13, wherein the folded configuration of the airbag has a fold seam.

15. The reinforced airbag, as recited in claim 14, wherein the first cover deployment flap has an opening location that is substantially parallel to the fold seam.