Arrangement for providing an air bag deployment opening

• US 5,447,327 A
• Filed: 05/25/1994
• Issued: 09/05/1995
• Est. Priority Date: 05/25/1994
• Status: Expired due to Fees

• Current Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Original Assignee: Morton International Incorporated (Autoliv Incorporated)
• Inventors: Jarboe, Patrick G., Kwak, Tae Y., Fredin, Steven R., Scharret, Jeffery L.
• Primary Examiner(s): Hill, Mitchell J.
• Assistant Examiner(s): English, Peter C.
• Application Number:
  US08/248,943
• Time in Patent Office: 468 Days
• Field of Search: 280/728 B, 280/732, 280/752, 280/728 R, 280/728 A, 280/730 R, 180/90
• US Class Current: 280/728.3
• CPC Class Codes: B60R 2021/21537 characterised by hinges
• CPC Class Codes: B60R 21/216 comprising tether means for limitation of cover motion during deployment
• CPC Class Codes: B60R 21/2165 characterised by a tear line for defining a deployment opening

Abstract

An arrangement for providing an opening in an interior trim structure of an automotive vehicle for the deployment of an air bag therethrough which minimizes the visual and/or tactile impression of the presence of the closure and the air bag deployment opening thereunder and which is not susceptible to significant fragmentation and projection of such fragments into the passenger compartment upon the opening thereof.

Claims

1. An arrangement for providing an opening in an interior trim structure of an automotive vehicle for the deployment of an air bag therethrough, the interior trim structure including a substrate section and a foam section, with the foam section at least partially overlying the substrate section, said arrangement comprising:

at least one door panel including a substrate portion, said door panel providing closure to said opening prior to air bag deployment, and

a skin smoothly overlaying the trim structure foam section and said door substrate portion rendering the opening invisible prior to deployment of the air bag through the opening, said skin being at least in part directly fastened to said door substrate portion.

2. The arrangement of claim 1 wherein said door panel substrate portion is continuous with said interior trim structure substrate section and formed by injection molding processing having a breakline about the periphery thereof, said breakline adapted to break under the influence of inflating of the air bag to define said opening.

3. The arrangement of claim 2 wherein said door panel substrate portion includes a side adjacent said air bag and wherein said breakline is formed by an indentation in said air bag adjacent side of said door panel substrate portion, said indentation being integrally formed therein during the injection molding processing.

4. The arrangement of claim 1 wherein said door panel substrate portion is non-continuous with said interior trim structure substrate section.

5. The arrangement of claim 1 wherein said skin includes a frangible seam outlining said opening, said frangible seam comprising an integrally formed indentation in the surface of said skin adjacent said door substrate portion.

6. The arrangement of claim 1 wherein upon deployment of the air bag said skin smoothly overlaying the trim structure foam section detaches at least in part from said skin smoothly overlaying said door substrate portion and said door panel is tethered in the vehicle.

7. An arrangement for providing an opening in an interior trim structure of an automotive vehicle for the deployment of an air bag therethrough, the interior trim structure including a substrate section and a foam section, with the foam section at least partially overlying the substrate section, said arrangement comprising:

at least one door panel including a substrate portion, said door panel providing closure to said air bag deployment opening prior to air bag deployment, and

a skin smoothly overlaying the interior trim structure and said door panel rendering the opening invisible prior to deployment of the air bag through the opening, said skin having a side proximate to the interior trim structure foam section and said door panel, said skin including at least one integral flange extending from said proximate side adjacent the periphery of said door panel, said flange being joined to the interior trim structure substrate section, the interior trim structure foam section comprising foam injection molded between said skin and the interior trim structure substrate section with said flange preventing passage of said interior trim structure injected foam onto said door panel substrate portion.

8. The arrangement of claim 7 wherein said skin and said door panel substrate portion are joined together by adhesion.

9. The arrangement of claim 7 wherein said door panel additionally includes a foam portion interposed between at least a segment of said door panel substrate portion and said overlaying skin.

10. The arrangement of claim 9 wherein said door panel foam portion is formed by injection molding foam between said door panel substrate portion and said overlaying skin.

11. The arrangement of claim 9 wherein said door panel foam portion comprises a piece of pre-cut foam between said door panel substrate portion and said overlaying skin.

12. The arrangement of claim 7 wherein said skin includes a frangible seam outlining said air bag deployment opening, said frangible seam comprising an integrally formed indentation in the surface of said overlaying skin proximate to said door panel.

13. An arrangement for providing an opening in an interior trim structure of an automotive vehicle for the deployment of an air bag therethrough, the interior trim structure including a substrate section and a foam section, with the foam section at least partially overlying the substrate section, said arrangement comprising:

at least one door panel providing closure to said air bag deployment opening prior to air bag deployment, said door panel including a substrate portion and a foam layer portion at least partially lying over and on said door panel substrate portion, said door panel, said door panel foam layer portion and said door panel substrate portion each having at least a first, a second, and a third side, with the first side of said door panel foam layer portion being continuous with the interior trim structure foam section, with at least the second and third sides of said door panel foam layer portion being non-continuous with the interior trim structure foam section, the first side of said door panel forming a hinge to enable said door panel to hinge open and form said air bag deployment opening, and

a skin smoothly overlaying the interior trim structure foam section and said door panel foam layer portion, said skin being adhered to said door panel substrate portion at least at the second and third sides of said door panel.