Vehicle seat assembly with inflatable air bag

• US 7,380,812 B2
• Filed: 12/01/2004
• Issued: 06/03/2008
• Est. Priority Date: 12/01/2004
• Status: Expired due to Fees

• Current Assignee: Lear Corporation
• Original Assignee: Lear Corporation
• Inventors: Tracht, Michael L., Dierl, Richard G.
• Primary Examiner(s): To; Toan C.
• Application Number:
  US10/904,853
• Publication Number:
  US 20060113768A1
• Time in Patent Office: 1,280 Days
• Field of Search: 280/728.2, 280/728.3, 280/730.1, 280/730.2, 280/732
• US Class Current: 280/728.3
• CPC Class Codes: B60R 2021/23146 seat mounted
• CPC Class Codes: B60R 21/207 in vehicle seats
• CPC Class Codes: B60R 21/2165 characterised by a tear line for defining a deployment opening
• CPC Class Codes: B60R 21/2176 the air bag components being completely enclosed in a soft or semi-rigid housing or cover

Abstract

A vehicle seat assembly includes an air bag arrangement having an inflatable air bag, and a cover material overlaying the air bag arrangement. The cover material has first and second sections that define a seam through with the air bag is deployable. A retainer is connected to the first and second sections of the cover material, and the retainer has a frangible portion. Upon inflation of the air bag, the retainer is configured to separate proximate the frangible portion to allow the air bag to deploy between the first and second sections of the cover material.

Claims

1. A vehicle seat assembly comprising:

an inflatable air bag;

a housing associated with the air bag, the housing having first and second housing portions;

a cover material overlaying the housing, the cover material having first and second sections; and

a retainer connected to the housing and the first and second sections of the cover material such that the retainer joins the cover material to the housing, the retainer having a frangible portion and being formed separately from the housing;

wherein upon inflation of the air bag, the housing portions are configured to allow relative movement therebetween, and the retainer is configured to separate proximate the frangible portion to allow the air bag to deploy between the first and second sections of the cover material.

2. The assembly of claim 1 wherein the first and second housing portions have first and second receptacles, respectively, and the retainer is disposed in the first and second receptacles.

3. The assembly of claim 2 wherein the retainer has first and second beveled ends, and the first and second housing portions have first and second beveled surfaces, respectively, that are engageable with the first and second beveled ends, respectively, of the retainer to facilitate a snap-fit engagement with the retainer.

4. The assembly of claim 2 wherein the first and second receptacles define first and second grooves, respectively, that interlockingly receive first and second ends, respectively, of the retainer, such that the retainer is configured to remain attached to the housing during deployment of the air bag.

5. The assembly of claim 4 wherein the retainer has first and second generally L-shaped legs that define the first and second ends, respectively, that are slidably received in the first and second grooves, respectively.

6. The assembly of claim 1 wherein the retainer is connected to the housing with a hook and loop fastener.

7. The assembly of claim 1 wherein the first and second housing portions are connected together at a weakened area that is configured to rupture upon deployment of the air bag.

8. The assembly of claim 1 wherein ends of the housing portions are spaced apart to define a deployment opening for the air bag.

9. The assembly of claim 1 wherein the first and second sections of the cover material are connected together at a seam through which the air bag is deployable.

10. The assembly of claim 1 wherein the retainer comprises plastic.

11. The assembly of claim 1 wherein the retainer is sewn to the first and second sections of the cover material.

12. The assembly of claim 1 wherein the sections of the cover material cooperate to define a deployment seam, and wherein the cover material is spaced away from the housing proximate the deployment seam.

13. A vehicle seat assembly comprising:

an air bag arrangement having an inflatable air bag;

a cover material overlaying the air bag arrangement, the cover material having first and second sections that define a seam through with the air bag is deployable; and

a relatively rigid, plastic retainer sewn to the first and second sections of the cover material, the retainer having a frangible portion;

wherein upon inflation of the air bag, the retainer is configured to separate proximate the frangible portion to allow the air bag to deploy between the first and second sections of the cover material.

14. The assembly of claim 13 wherein the air bag arrangement includes a housing associated with the air bag, and wherein the retainer is connected to the housing.

15. The assembly of claim 13 wherein the frangible portion of the retainer is generally aligned with the seam of the cover material.

16. A method of manufacturing a vehicle seat assembly, the method comprising:

attaching an air bag arrangement to a seat frame, the air bag arrangement including an inflatable air bag and a housing associated with the air bag, the housing including first and second housing portions;

positioning a cover arrangement over the air bag arrangement after the attaching step, the cover arrangement including a cover material having first and second sections, and a retainer connected to the first and second sections, the retainer having a frangible portion that is configured to break upon inflation of the air bag to allow the air bag to deploy between the first and second sections; and

connecting the retainer to the housing portions.

17. The method of claim 16 wherein the first and second housing portions have first and second receptacles, respectively, and wherein the connecting step includes inserting first and second portions of the retainer into the first and second receptacles, respectively.

18. The method of claim 16 wherein the housing portions define a channel, and wherein the connecting step includes sliding the retainer along the channel to connect the retainer to the housing portions.

19. The method of claim 16 wherein the first and second housing portions have first and second receptacles, respectively, and the retainer has first and second legs, and the connecting step comprises snap-fitting the first and second legs into the first and second receptacles, respectively.

20. The method of claim 19 wherein the first and second legs each have a beveled end, and the first and second housing portions each have a beveled surface, and wherein the beveled surfaces are engageable with the beveled ends during the connecting step to facilitate snap-fitting the first and second legs into the first and second receptacles, respectively.