Inflatable knee bolster module assembly

• US 6,517,103 B1
• Filed: 01/25/2000
• Issued: 02/11/2003
• Est. Priority Date: 01/25/2000
• Status: Expired due to Fees

• Current Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Original Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Inventors: Schneider, David W.
• Primary Examiner(s): Dickson, Paul N.
• Assistant Examiner(s): To, Toan C
• Application Number:
  US09/491,305
• Time in Patent Office: 1,113 Days
• Field of Search: 280/728.2, 280/732, 280/730.1, 280/753
• US Class Current: 280/730.1
• CPC Class Codes: B60R 2021/21525 the lid being fixed on the bag, or forming part of the bag wall, or the bag itself being used as wall liner
• CPC Class Codes: B60R 2021/2161 the cover being displaced towards the occupant during deployment
• CPC Class Codes: B60R 2021/23169 specially adapted for knee protection
• CPC Class Codes: B60R 21/215 characterised by the covers for the inflatable member B60R21/2176 takes precedence
• CPC Class Codes: B60R 21/216 comprising tether means for limitation of cover motion during deployment
• 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

Inflatable knee bolster module assemblies and associated methods are provided wherein first and second longitudinally spaced apart attachment extensions of a first outer lateral side of the inflatable knee cushion are passed through respectively corresponding first and second attachment openings in an associated assembly panel member.

Claims

1. An inflatable knee bolster module assembly comprising:

an inflatable knee cushion having opposed first and second outer lateral sides with at least the first outer lateral side having at least first and second longitudinally spaced apart attachment extensions;

a reaction housing joined with one of the first and second outer lateral sides of the inflatable knee cushion;

a load distributor panel joined with the other of the first and second outer lateral sides of the inflatable knee cushion;

wherein the one of the reaction housing and the load distributor panel joined with the first outer lateral side includes at least first and second longitudinally spaced apart attachment openings respectively corresponding to the first and second longitudinally spaced apart attachment extensions of the inflatable knee cushion with the first attachment extension extending through the first attachment opening in secured relationship and the second attachment extension extending through the second attachment opening in secured relationship, and

the second outer lateral side of the inflatable knee cushion also includes at least first and second longitudinally spaced apart attachment extensions; and

wherein the other of the reaction housing and the load distributor panel joined with the second outer lateral side also has at least first and second longitudinally spaced apart attachment openings respectively corresponding to the first and second longitudinally spaced apart attachment extension of the second outer lateral side, with the first attachment extension of the second outer lateral side extending through the first attachment opening of the other of the reaction housing and the load distributor panel joined with the second outer lateral side in secured relationship and the second attachment extension extending through the second attachment opening of the other of the reaction housing and the load distributor panel joined with the second outer lateral side in secured relationship.

2. The inflatable knee bolster module assembly of claim 1 wherein at least the first longitudinally spaced apart attachment extension of the inflatable knee cushion is in the form of a material loop and wherein the module assembly additionally comprises a retention rod extendable through the material loop attachment extension to prevent withdrawal of the material loop attachment extension through the first attachment opening.

3. The inflatable knee bolster module assembly of claim 2 wherein the retention rod includes at least one retention feature extending therefrom to prevent the unintended withdrawal of the retention rod from the material loop attachment extension.

4. The inflatable knee bolster module assembly of claim 2 wherein the retention rod and the material loop are sewn together.

5. The inflatable knee bolster module assembly of claim 1 wherein the inflatable knee cushion includes at least one internal panel tether.

6. The inflatable knee bolster module assembly of claim 5 wherein the at least one internal panel tether includes at least one vent hole therethrough.

7. The inflatable knee bolster module assembly of claim 1 additionally comprising a bolster panel adjacent the load distributor panel.

8. The inflatable knee bolster module assembly of claim 7 wherein the bolster panel is attachable to the load distributor panel.

9. The inflatable knee bolster module assembly of claim 1 wherein at least one of the first and second longitudinally spaced apart attachment extensions comprises a plurality of individual laterally spaced apart attachment extensions.

10. The inflatable knee bolster module assembly of claim 1 wherein at least the first attachment opening comprises a single slot opening through the one of the reaction housing and the load distributor panel joined with the first outer lateral side.

11. The inflatable knee bolster module assembly of claim 1 wherein at least the first attachment opening comprises at least two laterally spaced apart slot openings through the one of the reaction housing and the load distributor panel joined with the first outer lateral side.

12. The inflatable knee bolster module assembly of claim 1 wherein at least the first attachment opening comprises an opening of non-uniform shape through the one of the reaction housing and the load distributor panel joined with the first outer lateral side.

13. The inflatable knee bolster module assembly of claim 12 wherein the non-uniform shape opening is in the form of a keyed slot comprising a narrow slot portion with a thickened slot portion extending from at least one end of the narrow slot portion.

14. The inflatable knee bolster module assembly of claim 1 wherein the at least first and second longitudinally spaced apart attachment extensions are formed by a doubling of the inflatable knee cushion first outer lateral side onto itself and which at least first and second longitudinally spaced apart attachment extensions extend in an outward direction from the inflatable knee cushion.

15. The inflatable knee bolster module assembly of claim 1 wherein at least the first longitudinally spaced apart attachment extension of the inflatable knee cushion forms a slot and wherein the at least the one of the reaction housing and the load distributor panel joined with the first outer lateral side additionally comprises an attachment projection extending therefrom in a direction opposite the inflatable knee cushion, with the attachment projection extendable through the attachment extension slot.

16. An inflatable knee bolster module assembly comprising:

an inflatable knee cushion having opposed first and second outer lateral sides with at least the first outer lateral side having at least first and second longitudinally spaced apart attachment extensions;

a reaction housing joined with one of the first and second outer lateral sides of the inflatable knee cushion;

a load distributor panel joined with the other of the first and second outer lateral sides of the inflatable knee cushion;

wherein the one of the reaction housing and the load distributor panel joined with the first outer lateral side includes at least first and second longitudinally spaced apart attachment openings respectively corresponding to the first and second longitudinally spaced apart attachment extensions of the inflatable knee cushion with the first attachment extension extending through the first attachment opening in secured relationship and the second attachment extension extending through the second attachment opening in secured relationship and

wherein at least the first longitudinally spaced apart attachment extension of the inflatable knee cushion forms a slot and wherein the at least the one of the reaction housing and the load distributor panel joined with the first outer lateral side additionally comprises an attachment projection extending therefrom in a direction opposite the inflatable knee cushion, with the attachment projection extendable through the attachment extension slot.

17. An inflatable knee bolster module assembly comprising:

an inflatable knee cushion having opposed first and second outer lateral sides with at least the first outer lateral side having at least first and second longitudinally spaced apart attachment extensions;

a reaction housing joined with one of the first and second outer lateral sides of the inflatable knee cushion;

a load distributor panel joined with the other of the first and second outer lateral sides of the inflatable knee cushion;

wherein the one of the reaction housing and the load distributor panel joined with the first outer lateral side includes at least first and second longitudinally spaced apart attachment openings respectively corresponding to the first and second longitudinally spaced apart attachment extensions of the inflatable knee cushion with the first attachment extension extending through the first attachment opening in secured relationship and the second attachment extension extending through the second attachment opening in secured relationship,

wherein at least the first attachment opening comprises an opening of non-uniform shape through the one of the reaction housing and the load distributor panel joined with the first outer lateral side, and

wherein the non-uniform shape opening is in the form of a keyed slot comprising a narrow slot portion with a thickened slot portion extending from at least one end of the narrow slot portion.

18. In an inflatable knee bolster module assembly which includes an inflatable knee cushion having opposed first and second outer lateral sides, a first panel member comprising a reaction housing panel and a second panel member comprising a load distributor panel, the improvement comprising:

at least the first outer lateral side of the inflatable knee cushion having at least first and second longitudinally spaced apart attachment extensions;

at least one of the first and second panel members having at least first and second longitudinally spaced apart attachment openings respectively corresponding to the first and second longitudinally spaced apart attachment extension of the inflatable knee cushion with the first attachment extension extending through the first attachment opening in secured relationship and the second attachment extension extending through the second attachment opening in secured relationship; and

at least the first longitudinally spaced apart attachment extension of the inflatable knee cushion forms a slot and wherein the at least the one of the reaction housing and the load distributor panel joined with the first outer lateral side additionally comprises an attachment projection extending therefrom in a direction opposite the inflatable knee cushion, with the attachment projection extendable through the attachment extension slot.

19. In an inflatable knee bolster module assembly which includes an inflatable knee cushion and at least one panel member selected from the group of a reaction housing panel and a load distributor panel, a method for attaching the inflatable knee cushion with the at least one panel member, the method consisting essentially of:

passing first and second longitudinally spaced apart attachment extensions of a first outer lateral side of the inflatable knee cushion through, respectively corresponding first and second attachment openings in the at least one panel member, in secured relationship,

wherein at least the first longitudinally spaced apart attachment extension of the inflatable knee cushion is in the form of a first material loop and wherein the passing of the first longitudinally spaced apart attachment extension through the first attachment opening in the at least one panel member in secured relationship comprises;

securing a first, retention rod to the first material loop and

then passing the rod-secured material loop through the first attachment opening and

wherein the securing of the first retention rod to the first material loop comprises sewing the first retention rod to the cushion material loop.

20. In an inflatable knee bolster module assembly which includes an inflatable knee cushion and at least one panel member selected from the group of a reaction housing panel and a load distributor panel, a method for attaching the inflatable knee cushion with the at least one panel member, the method consisting essentially of:

passing first and second longitudinally spaced apart attachment extensions of a first outer lateral side of the inflatable knee cushion through, respectively corresponding first and second attachment openings in the at least one panel member, in secured relationship, and

wherein at least the first longitudinally spaced apart attachment extension of the inflatable knee cushion is in the form of a first material loop containing an elongated retention rod and wherein the passing of the first longitudinally spaced apart attachment extension through the first attachment opening in the at least one panel member in secured relationship comprises;

inserting the elongated retention rod-containing first material loop through a keyed slot formed attachment opening formed in the at least one panel member.

21. In an inflatable knee bolster module assembly which includes an inflatable knee cushion and at least one panel member selected from the group of a reaction housing panel and a load distributor panel, a method for attaching the inflatable knee cushion with the at least one panel member, the method consisting essentially of:

passing first and second longitudinally spaced apart attachment extensions of a first outer lateral side of the inflatable knee cushion through, respectively corresponding first and second attachment openings in the at least one panel member, in secured relationship, and

wherein at least the first longitudinally spaced apart attachment extension of the inflatable knee cushion forms a slot and wherein the at least one panel member additionally comprises an attachment projection extending therefrom in a direction opposite the inflatable knee cushion, wherein the step of passing the first longitudinally spaced apart attachment extension through a corresponding first attachment opening in the at least one panel member in secured relationship comprises;

extending the attachment projection through the attachment extension slot.

22. An inflatable knee bolster module assembly comprising:

an inflatable knee cushion having opposed first and second outer lateral sides with at least the first outer lateral side having at least first and second longitudinally spaced apart attachment extensions;

a load distributor panel joined with the first outer lateral side of the inflatable knee cushion;

a reaction housing joined with the second outer lateral sides of the inflatable knee cushion; and

a bolster panel joined with the load distributor panel;

wherein the load distributor panel includes a first planar surface adjacent the inflatable knee cushion, an opposed second planar surface adjacent the bolster panel and includes at least first and second longitudinally spaced apart attachment openings extending between the first and second planar surfaces and respectively corresponding to the first and second longitudinally spaced apart attachment extensions of the inflatable knee cushion with the first attachment extension extending through the first attachment opening to the second planar surface in secured relationship and the second attachment extension extending through the second attachment opening to the second planar surface in secured relationship.

23. The inflatable knee bolster module assembly of claim 22 wherein at least the first longitudinally spaced apart attachment extension of the inflatable knee cushion is in the form of a material loop and wherein the module assembly additionally comprises a retention rod extendable through the material loop attachment extension to prevent withdrawal of the material loop attachment extension through the first attachment opening.

24. The inflatable knee bolster module assembly of claim 23 wherein the retention rod includes at least one retention feature extending therefrom to prevent the unintended withdrawal of the retention rod from the material loop attachment extension.

25. The inflatable knee bolster module assembly of claim 23 wherein the retention rod and the material loop are sewn together.

26. The inflatable knee bolster module assembly of claim 22 wherein at least the first attachment opening comprises at least two laterally spaced apart slot openings through the load distributor panel joined.

27. The inflatable knee bolster module assembly of claim 22 wherein at least the first attachment opening comprises an opening of non-uniform shape through the load distributor.

28. The inflatable knee bolster module assembly of claim 27 wherein the non-uniform shape opening is in the form of a keyed slot comprising a narrow slot portion with a thickened slot portion extending from at least one end of the narrow slot portion.

29. In an inflatable knee bolster module assembly which includes an inflatable knee cushion, a load distributor panel and a bolster panel joined with the load distributor panel, wherein the load distributor panel includes a first planar surface adjacent the inflatable knee cushion, an opposed second planar surface adjacent the bolster panel and includes first and second longitudinally spaced apart attachment openings extending between the first and second planar surfaces, a method for attaching the inflatable knee cushion with the load distributor panel, the method comprising:

passing first and second longitudinally spaced apart attachment extensions of a first outer lateral side of the inflatable knee cushion through the respectively corresponding first and second attachment openings in the load distributor panel to the second planar surface in secured relationship.