Automotive vehicle air bag system

• US 6,513,835 B2
• Filed: 03/26/2001
• Issued: 02/04/2003
• Est. Priority Date: 03/26/2001
• Status: Expired due to Fees

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: General Motors Corporation (Motors Liquidation Co. GUC Trust)
• Inventors: Thomas, Scott David
• Primary Examiner(s): Dickson, Paul N.
• Assistant Examiner(s): To, Toan C
• Application Number:
  US09/817,784
• Publication Number:
  US 20020135166A1
• Time in Patent Office: 680 Days
• Field of Search: 280/728.1, 280/733, 280/743.1, 280/734, 280/735, 280/743.2, 280/741
• US Class Current: 280/743.2
• CPC Class Codes: B60R 21/216 comprising tether means for limitation of cover motion during deployment
• CPC Class Codes: B60R 21/231 characterised by their shape, construction or spatial configuration
• CPC Class Codes: B60R 21/26 characterised by the inflation fluid source or means to control inflation fluid flow arrangement or mounting thereof to the vehicle B60R21/20; blasting cartridges for producing gas under pressure in general F42B3/04; initiators or igniters therefor F42B3/10

Abstract

There is disclosed an air bag system for an automotive vehicle. The air bag system includes a moveable member that may be selectively actuated to assist in the controlling of venting openings and tether elements of the system. In turn, the moveable member offers control over the manner of deployment of an air bag of the system.

Claims

1. An air bag system comprising:

a gas emitting inflator for emitting inflation gas, said inflator in signaling communication with a first sensing device for sensing a first predetermined condition;

an air bag in fluid communication with said inflator for receiving said inflation gas to inflate said air bag to a deployed state upon the occurrence of said first predetermined condition;

a housing substantially surrounding said air bag and said inflator prior to inflation of said air bag, said housing including a plurality of walls;

a profile restraining tether element attached to a portion of said air bag and releasably retained by a portion of said air bag system;

a moveable member that is moveable from a first position to a second position for releasing said tether element from said portion of said air bag system, said moveable member having a cap portion and a generally elongated portion extending from an underside of said cap portion, said cap portion having dimensions corresponding to one or more of said plurality of walls of said housing for cooperatively forming a pressurizeable chamber between said housing and said underside of said cap portion; and

a gas emission component capable of releasing gas into said pressurizeable chamber to expand said chamber by applying force to said underside of said cap portion and moving said moveable member from said first position to said second position.

2. An air bag system as in claim 1, wherein said gas emission component is in communication with a second sensing device, said second sensing device capable of sending signals that, based upon a second predetermined condition, assist in determining when said emission component releases gas into said chamber to move said moveable member and said first sensing device and said second sensing device are integrated into a single system.

3. An air bag system as in claim 1, wherein said gas emission component is in communication with a second sensing device, said second sensing device capable of sending signals that, based upon a second predetermined condition, assist in determining when said emission component releases gas into said chamber to move said moveable member and said first sensing device and said second sensing device are separate from each other.

4. An air bag system as in claim 1, wherein at least one of said plurality of walls is formed of a metal stamping.

5. An air bag system as in claim 1, wherein a seal substantially surrounds said cap portion for sealing between said cap portion and said at least one of said plurality of walls.

6. An air bag system as in claim 1, wherein said portion of said air bag system to which said tether element is releaseably retained by is a portion of said moveable member.

13. An air bag system as in claim 1, wherein said tether element is released from said moveable member by moving interference with said housing as said moveable member moves from said first position to said second position.

7. An air bag system comprising:

a gas emitting inflator for emitting inflation gas, said inflator in signaling communication with a first sensing device for sensing a first predetermined condition;

an air bag in fluid communication with said inflator for receiving said inflation gas to inflate said air bag to a deployed state upon the occurrence of said first predetermined condition;

a housing substantially surrounding said air bag and said inflator prior to inflation of said air bag, said housing including a vent opening and a plurality of walls;

a profile restraining tether element attached to a portion of said air bag and releasably retained by a portion of said air bag system;

a moveable member that is moveable from a first position to a second position for releasing said tether element from said portion of said air bag system, said moveable member having a cap portion and a generally elongated portion extending from an underside of said cap portion, said cap portion having dimensions corresponding to one or more of said plurality of walls of said housing for cooperatively forming a pressurizeable chamber between said housing and said underside of said cap portion, and said elongated portion covering said vent opening in said housing when said moveable member is in said second position; and

a gas emission component of releasing gas into said pressurizeable chamber to expand said chamber by applying force to said underside of said cap portion and moving said moveable member from said first position to said second position.

8. An air bag system as in claim 7, wherein said gas emission component is in communication with a second sensing device, said second sensing device capable of sending signals that, based upon a second predetermined condition, assist in determining when said emission component releases gas into said chamber to move said moveable member and said first sensing device and said second sensing device are integrated into a single system.

9. An air bag system as in claim 7, wherein said gas emission component is in communication with a second sensing device, said second sensing device capable of sending signals that, based upon a second predetermined condition, assist in determining when said emission component releases gas into said chamber to move said moveable member and said first sensing device and said second sensing device are separate from each other.

10. An air bag system as in claim 7, wherein at least one of said plurality of walls is formed of a metal stamping.

11. An air bag system as in claim 7, wherein a seal substantially surrounds said cap portion for sealing between said cap portion and said at least one of said plurality of walls.

12. An air bag system as in claim 7, wherein said portion of said air bag system to which said tether element is releaseably retained by is a portion of said moveable member.

14. An air bag system as in claim 7, wherein said moveable member prevents a substantial amount of gas from being vented through said vent opening when said moveable member is in said second position.

15. An air bag system as in claim 7, further including a releaseable stay to hold said moveable member in said first position prior to actuation of said gas emission component.

16. An air bag system as in claim 7, further including a stopper to stop said moveable member at said second position.

17. An air bag system as in claim 16, wherein said stopper further includes a retainer to hold said moveable member in said second position.

18. An air bag system as in claim 7, wherein said portion of said air bag system to which said tether element is releaseably retained by is said housing and said tether element is released by moving interference with said moveable member as said moveable member moves from said first position to said second position.

19. An air bag system as in claim 7, wherein said chamber includes a chamber vent to vent gas from said chamber upon movement of said moveable member to said second position.

20. An air bag system as in claim 19, said moveable member closes said chamber vent when said moveable member is in said first position.

21. An air bag system as in claim 7, wherein said gas emission component is secured to said moveable member.

22. An air bag system as in claim 7, wherein said gas emission component is secured to said housing.

23. An air bag system as in claim 7, wherein said moveable member includes symmetric gas channels to evenly distribute gas from said gas emission component to said pressurizeable chamber.

24. An air bag system comprising:

a gas emitting inflator for emitting inflation gasp said inflator in signaling communication with a first sensing device for sensing a first predetermined condition;

an air bag in fluid communication with said inflator for receiving said inflation gas to inflate said air bag to a deployed state upon the occurrence of said first predetermined condition;

a housing substantially surrounding said air bag and said inflator prior to inflation of said air bag, said housing including a high pressure vent opening, a low pressure vent opening and a plurality of walls;

a profile restraining tether element attached to a portion of said air bag and releasably retained by a portion of said air bag system;

a moveable member that is moveable from a first position to a second position for releasing said tether element from said portion of said air bag system, said moveable member having a cap portion and a generally elongated portion extending from an underside of said cap portion, said cap portion having dimensions corresponding to one or more of said plurality of walls of said housing for cooperatively forming a pressurizeable chamber between said housing and said underside of said cap portion, and said elongated potion for covering said high pressure vent opening when said moveable member is in said second position and covering said low pressure vent opening when said moveable member is in said first position; and

a gas emission component capable of releasing gas into said pressurizeable chamber to expand said chamber by applying force to said underside of said cap portion and moving said moveable member from said first position to said second position.

25. An air bag system as in claim 24, wherein said gas emission component is in communication with a second sensing device, said second sensing device capable of sending signals that, based upon a second predetermined condition, assist in determining when said emission component releases gas into said chamber to move said moveable member and said first sensing device and said second sensing device are integrated into a single system.

26. An air bag system as in claim 24, wherein said gas emission component is in communication with a second sensing device, said second sensing device capable of sending signals that, based upon a second predetermined condition, assist in determining when said emission component releases gas into said chamber to move said moveable member and said first sensing device and said second sensing device are separate from each other.

27. An air bag system as in claim 24, wherein at least one of said plurality of walls is formed of a metal stamping.

28. An air bag system as in claim 24, wherein a seal substantially surrounds said cap portion for sealing between said cap portion and said at least one of said plurality of walls.

29. An air bag system as in claim 24, wherein said portion of said air bag system to which said tether element is releaseably retained by is a portion of said moveable member.

30. An air bag system as in claim 24, wherein said moveable member prevents a substantial amount of gas from being vented through said high pressure vent opening when said moveable member is in said second position.

31. An air bag system comprising:

a gas emitting inflator for emitting inflation gas, said inflator in signaling communication with a first sensing device for sensing a first predetermined condition;

an air bag in fluid communication with said inflator for receiving said inflation gas to inflate said air bag to a deployed state upon the occurrence of said first predetermined condition;

a housing substantially surrounding said air bag and said inflator prior to inflation of said air bag, said housing including a plurality of walls and a vent door operable to open and close a vent opening in said housing;

a profile restraining tether element attached to a portion of said air bag and releasably retained by a portion of said air bag system;

a moveable member that is moveable from a first position to a second position for releasing said tether element from said portion of said air bag system, said moveable member having a cap portion and a generally elongated portion extending from an underside of said cap portion, said cap portion having dimensions corresponding to one or more of said plurality of walls of said housing for cooperatively forming a pressurizeable chamber between said housing and said underside of said cap portion, and said elongated portion operates to maintain said vent door closed when said moveable member is in said first position and to open said vent door when said moveable member is in said second position; and

a gas emission component in communication with a second sensing device, said gas emission component capable of releasing gas into said pressurizeable chamber to expand said chamber by applying force to said underside of said cap portion and moving said moveable member from said first position to said second position, said second sensing device capable of sending signals that, based upon a second predetermined condition, assist in determining when said emission component releases gas into said chamber to move said moveable member.