Extruded manifold with plastic housing

• US 5,582,423 A
• Filed: 06/26/1995
• Issued: 12/10/1996
• Est. Priority Date: 06/26/1995
• Status: Expired due to Term

• Current Assignee: Key Safety Systems, Inc. (Ningbo Junsheng Investment Group Co., Ltd.)
• Original Assignee: Alliedsignal Inc.
• Inventors: Rion, Robert B., Turner, Darin J.
• Primary Examiner(s): Rice, Kenneth R.
• Application Number:
  US08/494,829
• Time in Patent Office: 533 Days
• Field of Search: 280/728.2, 280/740
• US Class Current: 280/728.2
• CPC Class Codes: B60R 21/2171 specially adapted for elongated cylindrical or bottle-like inflators with a symmetry axis perpendicular to the main direction of bag deployment, e.g. extruded reaction canisters B60R21/2176 takes precedence

Abstract

An airbag module assembly includes an airbag, deployment housing, manifold, and inflator. The airbag has a plurality of apertures formed therethrough adjacent the airbag opening. The apertures of the airbag cooperate with tabs on the airbag deployment housing to secure the bag to the housing. The tabs of the airbag deployment housing snap into position between a pair of ears extending from the manifold. The ears are swaged and the manifold chamfered in order to hold the airbag deployment housing in position laterally along the manifold. Accordingly, for assembly, the airbag apertures are mated with the respective airbag deployment housing tabs, and the airbag deployment housing is snapped into position between the ears of the manifold. Alternatively, the ears are spaced sufficiently apart to allow the housing tabs to be placed therebetween, and the ears are then crimped, staked or swaged over the tabs.

Claims

1. A vehicle airbag assembly, comprising;

an airbag deployment housing having an aperture, and a plurality of extending tabs proximate said aperture;

an airbag having a first portion forming an airbag opening to receive inflation gas, and having a plurality of apertures formed through said first portion adjacent said opening, wherein each airbag tab aperture is looped about a corresponding housing tab; and

a generally hollow manifold having at least one gas discharge opening, in fluid communication with said housing aperture, and clamp means for clamping upon the housing tabs to secure the manifold to the housing and for preventing each air bag tab aperture from dislodging from a corresponding housing tab.

2. The vehicle airbag assembly of claim 1, further comprising an inflator within the hollow of said manifold, said inflator having first and second ends.

7. The vehicle airbag assembly of claim 1, wherein said airbag deployment housing further comprising end tabs on opposing ends of said housing, and each of said pair of ears including first and second swaged portions in cooperation with said end tabs to prevent said deployment housing from sliding laterally along said ears.

8. The vehicle airbag assembly of claim 1, wherein said airbag deployment housing comprises a plastic material and said manifold comprises aluminum.

9. The vehicle airbag assembly of claim 1, wherein said clamping means being resilient to facilitate snap-in engagement of the said plurality of tabs between said clamping means.

10. The vehicle airbag assembly of claim 1, wherein said manifold comprising one piece.

3. A vehicle airbag assembly, comprising:

a generally hollow manifold having at least one gas discharge opening formed therethrough and having a pair of members extending therefrom;

an airbag deployment housing having a central aperture formed therethrough in fluid communication with said gas discharge opening, and further having a plurality of tabs extending therefrom adjacent said central aperture for mating engagement with said members; and

an airbag having a first portion forming an airbag opening and having a plurality of apertures formed through said first portion adjacent said opening for respective engagement with said plurality of tabs to secure said airbag to said deployment housing;

wherein said manifold comprising chamfered first and second ends.

4. The vehicle airbag assembly of claim 3, further comprising an inflator within said manifold, the inflator having chamfered first and second ends and said first end of said inflator being narrower than said second end of said manifold to facilitate insertion of said inflator into said manifold.

5. The vehicle airbag assembly of claim 4, wherein said first and second chamfered ends of said manifold cooperate to secure said inflator therein.

6. The assembly as defined in claim 3 wherein said first end of said manifold having a narrower diameter than said second end of said manifold.

11. A vehicle airbag assembly, comprising:

a generally hollow one-piece manifold having at least one gas discharge opening formed therethrough, said manifold having first and second chamfered ends, and having a pair of ears extending from said manifold, each said ear having first and second swaged portions at opposing ends of the ears;

an airbag deployment housing having a central aperture formed therethrough in fluid communication with said gas discharge opening, said housing having a plurality of tabs extending from the housing adjacent said central aperture for snap-in cooperation with said ears, and further having end tabs on opposing ends of said housing in cooperation with said swaged portions to prevent said deployment housing from sliding laterally along said ears; and

an airbag having a first portion forming an airbag opening and having a plurality of apertures formed through said first portion adjacent said opening for respective engagement with said plurality of tabs to secure said airbag to said deployment housing;

whereby to facilitate respective engagement of said tabs within said plurality of apertures prior to snap-in cooperation of said housing with said ears.

12. A vehicle airbag assembly, comprising:

an airbag having a first portion forming an airbag opening and having a plurality of apertures formed through said first portion adjacent said opening;

an airbag deployment housing for housing the airbag and having a central aperture formed therethrough, and further having a plurality of tabs extending from the deployment housing adjacent said central aperture for respective cooperation with said apertures formed through said first portion of said airbag to secure said airbag to said deployment housing;

a one-piece generally hollow manifold having at least one opening formed therethrough in fluid communication with said central aperture of said deployment housing, and including a pair of ears extending from the manifold to facilitate mating cooperation with said plurality of tabs to secure said deployment housing and airbag to said manifold;

wherein said manifold comprising chamfered first and second ends, said first end of said manifold having a narrower diameter than said second end of said manifold.

13. The vehicle airbag assembly of claim 12, wherein a first and a second end of an inflator is chamfered, the inflator fitted within the manifold, wherein said first end of said inflator is narrower than said second end of said manifold to facilitate insertion of said inflator into said manifold.

14. The vehicle airbag assembly of claim 13, wherein said first and second chamfered ends of said manifold cooperating to secure said inflator therein.

15. A vehicle airbag assembly, comprising:

an airbag having a first portion forming an airbag opening and having a plurality of apertures formed through said first portion adjacent said opening;

an airbag deployment housing for housing the airbag and having a central aperture formed therethrough, and further having a plurality of tabs extending from the deployment housing adjacent said central aperture for respective cooperation with said apertures formed through said first portion of said airbag to secure said airbag to said deployment housing;

a one-piece generally hollow manifold having at least one opening formed therethrough in fluid communication with said central aperture of said deployment housing, and including a pair of ears extending from the manifold to facilitate mating cooperation with said plurality of tabs to secure said deployment housing and airbag to said manifold;

wherein said airbag deployment housing further comprising a pair of end tabs on opposing ends of said housing, and each of said pair of ears including first and second swaged portions in cooperation with said end tabs to prevent said deployment housing from sliding laterally along said ears.

16. The vehicle airbag assembly of claim 15, wherein said airbag deployment housing comprises a plastic material and said manifold comprises aluminum.

17. A vehicle airbag assembly of claim 15, wherein said ears being resilient to facilitate snap-in engagement of said plurality of tabs between said ears.

18. A method of assembling an airbag assembly, the assembly comprising a hollow manifold having opposing ears forming respective channels, a hollow airbag deployment housing having a plurality of sets of tabs positioned to be engaged by a respective manifold ear, and an air bag having a plurality of apertures adapted to be received about a respective set of tabs, the method comprising:

a) placing the airbag apertures about the respective tabs,

b) radially moving the airbag deployment housing against the manifold and

c) causing the tabs to engage the ears.

19. The method as defined in claim 18 wherein the step of causing the tabs to engage the ears includes one of the steps of:

a) snapping the tabs in place within the ears,

b) crimping the ears about the tabs and

c) staking the ears inwardly into the tabs by permanently deforming the ears.