Air bag module

• US 5,533,745 A
• Filed: 01/10/1995
• Issued: 07/09/1996
• Est. Priority Date: 01/10/1995
• Status: Expired due to Fees

• Current Assignee: TRW Vehicle Safety Systems Incorporated (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Original Assignee: TRW Vehicle Safety Systems Incorporated (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Inventors: Jenkins, Jeffrey A., Wiers, John W.
• Primary Examiner(s): Rice, Kenneth R.
• Application Number:
  US08/370,788
• Time in Patent Office: 546 Days
• Field of Search: 280/728.2, 280/732, 280/741
• 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 air bag module (10) includes a housing (12) having upper and lower side walls (30, 38) and a central wall (50). An air bag (14) is folded and stored in the housing (12), An inflator (16) is disposed in the housing (12) between the air bag (14) and the central wall (50). A spring clip (20) is disposed between the air bag (14) and the inflator (16). The spring clip (20) has end portions (150, 152) connected with the upper and lower side walls (30, 38) of the housing (12). A central portion (148) of the spring clip (20) biases and holds the inflator (16) against the central wall (50) of the housing.

Claims

1. A vehicle safety apparatus comprising:

a housing having a plurality of walls defining a chamber in said housing, said plurality of walls including first and second opposite side walls and a central wall extending between and interconnecting said first and second side walls, said first and second side walls having portions at least partially defining a deployment opening in said housing opposite said central wall;

an inflatable vehicle occupant restraint in said chamber in said housing between said central wall and said deployment opening;

an inflator in said housing at a location between said inflatable restraint and said central wall; and

a spring clip in said housing at a location between said inflator and said inflatable restraint, said spring clip having a first end portion having a snap together fastenerless connection with said first side wall of said housing and a second end portion having a snap together fastenerless connection with said second side wall of said housing and a central portion in abutting engagement with said inflator, said spring clip biasing and holding said inflator against said central wall of said housing.

2. A vehicle safety apparatus as set forth in claim 1 wherein said first and second end portions of said spring clip are resiliently deflected to cause said central portion of said spring clip to hold said inflator against said central wall of said housing.

3. A vehicle safety apparatus as set forth in claim 2 wherein said inflator has a cylindrical outer surface and said central portion of said spring clip has an arcuate configuration overlying said cylindrical outer surface of said inflator.

4. A vehicle safety apparatus as set forth in claim 3 wherein said central portion of said spring clip has a center of curvature coincident with a longitudinal central axis of said inflator, said first and second end portions of said spring clip extending from said central portion in a direction generally radially from said center of curvature.

5. A vehicle safety apparatus as set forth in claim 1 wherein said inflator has a longitudinal central axis and said spring clip has a width in the range of from about 10 mm to about 20 mm as measured in a direction parallel to said axis of said inflator.

6. A vehicle safety apparatus as set forth in claim 5 wherein said inflator has a generally cylindrical configuration, said inflator having a length in the range of from about 200 mm to about 300 mm as measured in a direction along said axis, said inflator having a diameter in the range of from about 50 mm to about 75 mm.

7. A vehicle safety apparatus as set forth in claim 1 wherein said first side wall of said housing includes portions defining an opening in said first side wall extending between said chamber and the exterior of said housing, said first end portion of said spring clip extending through said opening in said first side wall of said housing, said second side wall of said housing including portions defining an opening in said second side wall extending between said chamber and the exterior of said housing, said second end portion of said spring clip extending through said opening in said second side wall of said housing.

8. A vehicle safety apparatus as set forth in claim 7 wherein said portions of said first side wall defining said opening in said first side wall include first and second edge portions spaced apart on opposite sides of said opening, said first edge portion of said first side wall clamping said first end portion of said spring clip against said second edge portion of said first side wall.

9. A vehicle safety apparatus as set forth in claim 1 further comprising a first fastener extending through said first side wall of said housing and said first end portion of said spring clip and securing said first end portion of said spring clip to said first side wall.

10. A vehicle safety apparatus as set forth in claim 1 wherein said central wall of said housing includes a body portion and a plurality of portions projecting from said body portion in a direction toward said deployment opening, said projecting portions of said central wall engaging said inflator and cooperating with said spring clip to hold said inflator in a position spaced apart from said body portion of said central wall.

11. A vehicle safety apparatus as set forth in claim 1 wherein said first and second side walls of said housing extend generally parallel to each other in a first direction between said central wall and said deployment opening, said axis of said inflator extending transverse to said first direction.

12. A vehicle safety apparatus comprising:

a housing having a plurality of walls defining a chamber in said housing, said plurality of walls including first and second opposite side walls and a central wall extending between and interconnecting said first and second side walls, said first and second side walls having portions at least partially defining a deployment opening in said housing opposite said central wall;

an inflatable vehicle occupant restraint stored in said chamber in said housing between said central wall and said deployment opening;

an inflator disposed in said housing at a location between said inflatable restraint and said central wall of said housing; and

means for biasing said inflator against said central wall of said housing to hold said inflator in said housing, said means for biasing said inflator comprising a spring clip disposed within said housing at a location between said inflator and said inflatable restraint, said spring clip having a snap fit fastenerless connection with said housing.

13. A vehicle safety apparatus as set forth in claim 12 wherein said spring clip includes first and second end portions and a central portion extending between and interconnecting said first and second end portions, said first end portion of said spring clip being connected with said first side wall of said housing and said second end portion of said spring clip being connected with said second side wall of said housing, said central portion of said spring clip being in abutting engagement with said inflator and biasing said inflator against said central wall of said housing.

14. A vehicle safety apparatus as set forth in claim 12 wherein said inflator has a cylindrical outer surface, said spring clip including an arcuate central portion overlying said cylindrical outer surface of said inflator and opposite end portions biasing said arcuate portion in a direction toward said central wall of said housing.

15. A vehicle safety apparatus as set forth in claim 14 wherein said end portions of said spring clip are engageable with said side walls of said housing and are movable in a direction away from said central wall of said housing relative to said arcuate portion between an undeflected condition and a deflected condition biasing said arcuate portion of said spring clip in a direction toward said central wall of said housing.

16. A vehicle safety apparatus as set forth in claim 15 wherein said end portions of said spring clip are formed as one piece with said arcuate portion of said spring clip and extend from said arcuate portion in a direction generally away from the center of curvature of said arcuate portion.

17. A vehicle safety apparatus as set forth in claim 16 wherein said spring clip comprises a single strip of metal having a width in the range of from about 10 mm to about 20 mm as measured in a direction parallel to an axis of said inflator.

18. A vehicle safety apparatus comprising:

a housing having a plurality of walls defining a chamber in said housing, said plurality of walls including first and second opposite side walls and a central wall extending between and interconnecting said first and second side walls, said first and second side walls having portions at least partially defining a deployment opening in said housing opposite said central wall;

an inflatable vehicle occupant restraint in said chamber in said housing between said central wall and said deployment opening;

an inflator in said housing at a location between said inflatable restraint and said central wall; and

a spring clip in said housing at a location between said inflator and said inflatable restraint, said spring clip having a first end portion connected with said first side wall of said housing and a second end portion connected with said second side wall of said housing and a central portion in abutting engagement with said inflator, said spring clip biasing and holding said inflator against said central wall of said housing, said first side wall of said housing including portions defining an opening in said first side wall extending between said chamber and the exterior of said housing, said first end portion of said spring clip extending through said opening in said first side wall of said housing, said second side wall of said housing including portions defining an opening in said second side wall extending between said chamber and the exterior of said housing, said second end portion of said spring clip extending through said opening in said second side wall of said housing.

19. A vehicle safety apparatus as set forth in claim 18 wherein said portions of said first side wall defining said opening in said first side wall include first and second edge portions spaced apart on opposite sides of said opening, said first edge portion of said first side wall clamping said first end portion of said spring clip against said second edge portion of said first side wall.