Toothed inflator adapter for an airbag assembly

• US 5,498,029 A
• Filed: 01/19/1995
• Issued: 03/12/1996
• Est. Priority Date: 01/19/1995
• Status: Expired due to Term

• Current Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Original Assignee: Morton International Incorporated (Autoliv Incorporated)
• Inventors: Crowell, Bryan P., Mossi, G. Dean
• Primary Examiner(s): Culbreth, Eric D.
• Application Number:
  US08/375,355
• Time in Patent Office: 418 Days
• Field of Search: 280/728.2, 280/728.1, 280/732, 280/736, 280/741, 403/11
• US Class Current: 280/741
• 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
• CPC Class Codes: Y10T 403/16 with adjunctive protector, broken parts retainer, repair, assembly or disassembly feature

Abstract

An inflator adapter is provided for mounting a generally cylindrical inflator in an airbag module. The adapter has a hollow cylindrical shape with an inside diameter slightly larger than the outside diameter of the inflator being mounted therein. The adapter contains a plurality of internal inwardly protruding teeth located around the circumference of one end thereof. When the adapter is pressed on to the inflator, the inwardly facing teeth bite into the exterior of the inflator, thereby mechanically locking the adapter onto the inflator which is then mounted in the airbag module.

Claims

1. An inflator adapter for mounting a generally cylindrical inflator of an airbag assembly in an airbag module, said inflator adapter comprising:

a hollow cylindrical housing with first and second ends;

mounting means on said first end for mounting said inflator adapter in an airbag module;

said second end having an inside diameter slightly larger than an outside diameter of an inflator which is to be mounted therein; and

a plurality of internal, axially inclined and radially inwardly protruding teeth located around a circumference of said second end of said adapter housing whereby when the second end of the adapter housing is pressed on to the inflator the inwardly protruding teeth grip an exterior surface of the inflator mounted therein, locking the inflator in the inflator adapter.

2. The inflator adapter as claimed in claim 1 wherein said inwardly protruding teeth are positioned substantially uniformly around an external edge of said second end of said inflator adapter housing.

3. The inflator adapter as claimed in claim 2 wherein said housing has a plurality of dimples spaced internally around the inside diameter of said second end of said inflator adapter housing and spaced axially inward from said inwardly protruding teeth.

4. The inflator adapter as claimed in claim 1 wherein said hollow cylindrical inflator adapter housing is radially bisected between said first and second ends of said adapter housing by an internal separator on an inside circumference of said cylindrical adapter housing, said separator functioning to limit a depth to which the second end of the inflator adapter housing may be inserted on the inflator.

5. The inflator adapter as claimed in claim 4, wherein said inwardly protruding teeth are substantially uniformly spaced around a periphery edge of said second end of said inflator adapter housing.

6. The inflator adapter as claimed in claim 5 wherein said teeth are rectangularly shaped.

7. The inflator adapter as claimed in claim 1 having an internal circumferential bead on an outer peripheral edge of said second end.

8. The inflator adapter as claimed in claim 1 wherein said teeth are triangularly shaped pointed teeth.

9. The inflator adapter as claimed in claim 1 wherein said mounting means comprises a flange on said first end of said cylindrical adapter housing.

10. An airbag restraint inflator assembly comprising:

an airbag module having an access opening in a first end wall of said airbag module, said access opening receiving and positioning an inflator and inflator adapter within a cavity of said airbag module;

said inflator, shorter in dimension than said airbag module in which said inflator is mounted, said inflator having a generally cylindrically shaped housing with a flangeless base;

said inflator adapter having a hollow, tubular configuration with an inside diameter slightly larger than an outside diameter of said inflator on which said inflator adapter is mounted;

a plurality of internal, axially inclined and radially inwardly protruding teeth located around a circumference on one end of said inflator adapter, which teeth grip an exterior surface of said inflator locking said inflator adapter on said inflator; and

means for mounting said inflator adapter with said inflator carried thereby in said access opening of said airbag module.

11. An airbag restraint inflator assembly comprising:

an airbag module having an access opening in an end wall of said airbag module, said access opening receiving and positioning an inflator and inflator adapter within a cavity of said airbag module;

said inflator being generally cylindrically shaped with a flangeless base;

said inflator adapter having a hollow, tubular housing having first and second ends with an inside diameter slightly larger than an outside diameter of said inflator on which said inflator adapter is mounted and a plurality of internal, axially inclined and radially inwardly protruding teeth located circumferentially around said second end of said housing, which teeth grip an exterior surface of said inflator locking said inflator adapter on said inflator; and

means on said first end of said housing for mounting said inflator adapter with said inflator carried thereby in said access opening of said airbag module.

12. An airbag restraint-inflator assembly as claimed in claim 11 wherein said inwardly protruding teeth are positioned substantially uniformly around the circumference on said second end of said inflator adapter.

13. An airbag restraint-inflator assembly as claimed in claim 12 wherein said housing has a plurality of dimples spaced internally around the inside diameter of said second end of said inflator adapter housing and spaced axially inward from said inwardly protruding teeth.

14. An airbag restraints inflator assembly as claimed in claim 11 wherein said hollow tubular inflator adapter is radially bisected between said first and second ends of said inflator adapter by an internal separator on the inside diameter of said hollow tubular configuration, said separator functioning to limit the depth to which the second end of the inflator adapter housing may be inserted on the inflator.

15. An airbag restraint-inflator assembly as claimed in claim 14 wherein said inwardly protruding teeth are substantially uniformly spaced around a periphery edge of said second end of said inflator adapter housing.

16. An airbag restraint-inflator assembly as claimed in claim 15 wherein said teeth are rectangularly shaped.

17. An airbag restraint-inflator assembly as claimed in claim 11 having an internal circumferential bead on an outer peripheral edge of said second end.

18. An airbag restraint-inflator assembly as claimed in claim 11 wherein said teeth are triangularly shaped pointed teeth.

19. An airbag restraint-inflator assembly as claimed in claim 11 wherein said mounting means comprises a flange on said first end of said cylindrical adapter housing.

20. An inflator adapter for mounting a generally cylindrical shaped airbag inflator having a flangeless base in an airbag module and wherein said inflator is shorter in dimension than said airbag module, said inflator adapter comprising:

a hollow, tubular cylindrical housing with first and second ends;

flange means on said first end for mounting said inflator adapter in an airbag module;

said first and second ends having an inside diameter slightly larger than an outside diameter of an inflator which is to be mounted therein;

a plurality of internal, axially inclined and radially inwardly protruding teeth located around a circumference of a peripheral edge of said second end of said housing whereby when the second end of said inflator adapter housing is inserted on the inflator, the inwardly protruding teeth grip an exterior surface of said inflator mounted therein locking the inflator in the inflator adapter; and

said hollow, tubular cylindrical housing having a plurality of inwardly facing dimples spaced internally around the inside diameter of said inflator adapter housing and spaced axially inward from said inwardly protruding teeth.