Automotive vehicle air bag system

• US 6,511,094 B2
• Filed: 03/26/2001
• Issued: 01/28/2003
• Est. Priority Date: 03/27/2000
• Status: Expired due to Fees

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: General Motors Corporation (General Motors Company)
• Inventors: Thomas, Scott David, Rogers, Darrell O., Faust, Daniel Patrick, Wolanin, Michael John
• Primary Examiner(s): Dickson, Paul N.
• Assistant Examiner(s): To, Toan C
• Application Number:
  US09/817,767
• Publication Number:
  US 20010035637A1
• Time in Patent Office: 673 Days
• Field of Search: 280/728.1, 280/733, 280/734, 280/742, 286/743.2, 286/736
• US Class Current: 280/743.2
• CPC Class Codes: B60R 2021/23382 Internal tether means
• CPC Class Codes: B60R 2021/2765 comprising means to control the venting
• CPC Class Codes: B60R 21/233 comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other B60R21/232 takes precedence
• CPC Class Codes: B60R 21/2338 Tethers
• CPC Class Codes: B60R 21/276 with means to vent the inflation fluid source, e.g. in case of overpressure B60R21/30 takes precedence; venting means on inflatable member walls B60R21/239

Abstract

An air bag system for an automotive vehicle is disclosed. The air bag system includes a housing substantially enclosing a gas emitting inflator and a compact undeployed air bag. The system further includes a moveable member that controls flow of gas into the air bag by controlling items such as tether elements and venting openings that, in turn, control the amount of gas released into the bag and the shape of the bag upon deployment.

Claims

1. An air bag system comprising:

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

an air bag in fluid communication with said inflator for receiving said inflation gas from said inflator 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;

a profile restraining tether element attached to a portion of said air bag;

a moveable member that is moveable from a first position to a second position, said member including an opening in alignment with said vent opening of said housing when said moveable member is in its first position and out of alignment when said moveable member is in said second position;

an actuator capable of selectively actuating said moveable member from said first position to said second position; and

a release mechanism having a rotatable member supported by said moveable member prior to actuation of said member, said rotatable member rotating to release said tether element upon actuation of said moveable member.

2. An air bag system as in claim 1, wherein said actuator is in signaling communication with a second sensing device, said second sensing device capable of sending signals to said actuator to assist in determining when said actuator actuates said moveable member based upon a second predetermined condition, 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 actuator is in signaling communication with a second sensing device, said second sensing device capable of sending signals to said actuator to assist in determining when said actuator actuates said moveable member based upon a second predetermined condition, 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 said housing includes an opening adjacent said rotatable member and said rotatable member rotates to partially cover said opening adjacent said rotatable member such that said opening aspirates gas from the surrounding environment.

5. An air bag system as in claim 1, wherein said second predetermined condition is occupant positioning.

6. An air bag system comprising:

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

an air bag in fluid communication with said inflator for receiving said inflation gas from said inflator 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 rod;

a profile restraining tether element attached to a portion of said air bag and looped about said rod of said housing;

a scraper;

a moveable member in driving relationship with said scraper, said moveable member being moveable from a first position to a second position, said member including a member opening; and

an actuator capable of selectively actuating said moveable member from said first position to said second position;

wherein said tether element is releasable from said rod by said scraper upon actuation of said moveable member.

7. An air bag system as in claim 6, wherein said actuator is in signaling communication with a second sensing device, said second sensing device capable of sending signals to said actuator to assist in determining when said actuator actuates said moveable member based upon a second predetermined condition, and said first sensing device and said second sensing device are integrated into a single system.

8. An air bag system as in claim 6, wherein said actuator is in signaling communication with a second sensing device, said second sensing device capable of sending signals to said actuator to assist in determining when said actuator actuates said moveable member based upon a second predetermined condition, and said first sensing device and said second sensing device are separate from each other.

9. An air bag system as in claim 6, wherein said second predetermined condition is occupant positioning.

10. An air bag system as in claim 6, wherein said scraper includes an annular retaining wall disposed on a free end of said rod to prevent releasing of said tether element prior to actuation of said moveable member.

11. An air bag system as in claim 10, wherein said scraper further includes a hook portion attached to said retaining wall at one end and operable to pull said tether element off said rod upon actuation of said moveable member.

12. An air bag system as in claim 10, wherein said scraper includes a scraping element mounted on said rod and disposed between said housing and said tether element, said scraping element operatively attached to said retaining wall of said scraper whereby upon actuation of said moveable member said scraping element releases said tether element from said rod.

13. An air bag system as in claim 6, wherein said moveable member vent opening is partially aligned with said housing vent opening when said moveable member is in said first position and said housing vent opening is substantially closed when said moveable member is in said second position.

14. An air bag system as in claim 6, wherein said moveable member vent opening is substantially aligned with said housing vent opening when said moveable member is in said first position and said housing vent opening is partially closed when said moveable member is in said second position.

15. An air bag system as in claim 6, wherein said moveable member vent opening is partially aligned with said housing vent opening when said moveable member is in said first position and said housing vent opening is partially closed when said moveable member is in said second position.

16. An air bag system as in claim 6, wherein said tether element is a vertically-oriented panel when said air bag is inflated.

17. An air bag system as in claim 6, wherein said tether element is attached to and disposed on an exterior side of said air bag.

18. An air bag system as in claim 6, wherein said gas emitting inflator is capable of emitting more than one level of inflation gas to the air bag.

19. An air bag system comprising:

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

an air bag in fluid communication with said inflator for receiving said inflation gas from said inflator 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;

a moveable member that is moveable from a first position to a second position, said member including an opening with a first portion in alignment with said vent opening of said housing when said moveable member is in its first position and a second portion in alignment with said vent opening of said housing when said housing is in said second position;

a profile restraining tether element attached to a portion of said air bag and releaseably retained by said moveable member;

an actuator capable of selectively actuating said Tolerable remember from said first position to said second position; and

a scraper wherein said tether element is releaseable from said moveable member by said scraper upon actuation of said moveable member.

20. An air bag system as in claim 19, wherein said actuator is in signaling communication with a second sensing device, said second sensing device capable of sending signals to said actuator to assist in determining when said actuator actuates said moveable member based upon a second predetermined condition, and said first sensing device and said second sensing device are integrated into a single system.

21. An air bag system as in claim 19, wherein said actuator is in signaling communication with a second sensing device, said second sensing device capable of sending signals to said actuator to assist in determining when said actuator actuates said moveable member based upon a second predetermined condition, and said first sensing device and said second sensing device are separate from each other.

22. An air bag system as in claim 19, wherein said second predetermined condition is occupant positioning.

23. An air bag system as in claim 19, wherein said moveable member includes a rod about which said tether element is releaseably retained and wherein said scraper is mounted on said rod between said moveable member and said tether element and operatively attached to said housing whereby upon actuation of said moveable member said scraping element releases said tether element from said rod.

24. An air bag system as in claim 19, wherein said tether element is a vertically-oriented panel when said air bag is inflated.

25. An air bag system as in claim 19, wherein said tether element is attached to and disposed on an exterior side of said air bag.

26. An air bag system comprising:

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

an air bag in fluid communication with said inflator for receiving said inflation gas from said inflator 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;

a moveable member that is moveable from a first position to a second position, said member including an opening in alignment with said vent opening of said housing when said moveable member is in its first position and out of alignment when said housing is in said second position;

an actuator capable of selectively actuating said moveable member from said first position to said second position;

a profile restraining tether element attached to a portion of said air bag and releaseably retained by a portion of said air bag system whereupon actuation of said moveable member, said tether element is released; and

a gas director adjacent said opening of said moveable member, said gas director guiding gas from said inflator through said opening in said moveable member and said vent opening in said housing when said moveable member is in a position selected from said first position and said second position.

27. An air bag system as in claim 26, wherein said actuator is in signaling communication with a second sensing device, said second sensing device capable of sending signals to said actuator to assist in determining when said actuator actuates said moveable member based upon a second predetermined condition, and said first sensing device and said second sensing device are integrated into a single system.

28. An air bag system as in claim 26, wherein said actuator is in signaling communication with a second sensing device, said second sensing device capable of sending signals to said actuator to assist in determining when said actuator actuates said moveable member based upon a second predetermined condition, and said first sensing device and said second sensing device are separate from each other.

29. An air bag system as in claim 26, wherein said second predetermined condition is occupant positioning.

30. An air bag system as in claim 26, wherein said gas director is attached to said inflator.

31. An air bag system as in claim 26, wherein said gas director is attached to said housing.

32. An air bag system as in claim 26, wherein said gas director is attached to said moveable member.

33. An air bag system as in claim 26, wherein said portion of said air bag system to which said tether element is releaseably retained by is said moveable member.

34. An air bag system as in claim 26, wherein said portion of said air bag system to which said tether element is releaseably retained by is said housing.