One piece cushion for personal airbag

• US 7,025,376 B2
• Filed: 03/04/2003
• Issued: 04/11/2006
• Est. Priority Date: 03/04/2003
• Status: Expired due to Fees

• Current Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Original Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Inventors: Dominissini, David L.
• Primary Examiner(s): English, Peter C.
• Application Number:
  US10/379,452
• Publication Number:
  US 20040174003A1
• Time in Patent Office: 1,134 Days
• Field of Search: 280/729, 280/730.1, 280/732, 280/743.1, 280/743.2, 280/731
• US Class Current: 280/729
• CPC Class Codes: B60R 2021/0004 Frontal collision
• CPC Class Codes: B60R 2021/23324 Inner walls crating separate compartments, e.g. communicating with vents
• CPC Class Codes: B60R 2021/23386 External tether means
• CPC Class Codes: B60R 2021/23547 one piece weaving
• CPC Class Codes: B60R 2021/2612 Gas guiding means, e.g. ducts
• 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

Abstract

The present invention relates to an airbag cushion that is lighter-weight, smaller, and more compact than the previously known airbag systems, yet still capable of providing a vehicle occupant with ample impact protection during a crash. Generally, the airbag comprises a one-piece woven cushion with two or more inflatable chambers. These chambers have a generally flat two-dimensional shape in its uninflated and unfolded configuration. However, once gas is added, the airbag cushion rapidly inflates and converts into a three-dimensional shape capable of providing impact protection to the occupant. Preferably, the three-dimensional configuration of the inflated airbag is generally triangular, V-shaped, or polygonal in shape. One of the inflatable chambers functions as an inflatable impact chamber configured such that when an inflation gas in infused into the airbag cushion during a vehicle crash, the inflatable impact chamber inflates and presents a surface to receive the impact of the body of a vehicle occupant. One of the other inflatable chambers is configured to comprise an inflatable support column that is in fluid communication with the inflatable impact chamber. The inflatable support column is constructed such that if inflatable impact chamber begins to compress or deflate under the stress of a crash, the inflatable support column provides a compression-resisting force to the inflatable impact chamber. Additional inflatable support columns may also be added.

Claims

1. An inflatable airbag cushion comprising:

a first inflatable chamber;

a second inflatable chamber;

a third inflatable chamber, the first, second and third inflatable chambers being in fluid communication with each other;

at least one tether attaching an outside portion of one of the inflatable chambers to an outside portion of a different inflatable chamber such that if the airbag cushion is inflated, the first, second, and third inflatable chambers form a generally triangular shape;

wherein one of the inflatable chambers functions as an inflatable impact chamber that is capable of receiving the impact of a vehicle occupant during a crash and one of the remaining inflatable chambers functions as one or more inflatable support columns capable of providing compression resistance to the inflatable impact chamber.

2. The airbag cushion of claim 1 further comprising one or more uninflatable regions.

3. The airbag cushion of claim 1 further comprising one or more chamber dividers.

4. The airbag cushion of claim 1 further comprising an inflation port in fluid communication with the airbag cushion.

5. The airbag cushion of claim 1 wherein one or more of the inflatable chambers comprises a body.

6. The airbag cushion of claim 1 wherein one or more of the inflatable chambers comprises a neck.

7. The airbag cushion of claim 1 wherein one or more of the inflatable chambers comprises a cutout.

8. The airbag cushion of claim 1 wherein one or more of the inflatable chambers comprises extending arms.

9. The inflatable airbag cushion of claim 1, wherein if the airbag cushion is inflated, the first and second inflatable chambers intersect to form a first angle, the second and third inflatable chambers intersect to form a second angle, and the first and third inflatable chambers intersect to form a third angle.

10. The inflatable airbag cushion of claim 9 wherein the measure of the first angle is less than about 80°

.

11. The inflatable airbag cushion of claim 9 wherein the measure of the second angle is less than about 80°

.

12. The inflatable airbag cushion of claim 9 wherein the measure of the third angle is less than about 80°

.

13. The inflatable airbag cushion of claim 9 wherein the sum of the measures of the first, second, and third angles equals about 180°

.

14. The inflatable airbag cushion of claim 9 wherein the measures of the first, second, and third angles are substantially equal.

15. The airbag cushion as in claim 1 wherein the first inflatable chamber functions as the inflatable impact chamber.

16. The airbag cushion as in claim 15 wherein the third inflatable chamber functions as an inflatable support column.

17. The airbag cushion as in claim 1 wherein the third inflatable chamber functions as the inflatable impact chamber.

18. The airbag cushion as in claim 17 wherein the first inflatable chamber functions as an inflatable support column.

19. The airbag cushion as in claim 1 wherein the second inflatable chamber functions as the inflatable impact chamber.

20. The airbag cushion as in claim 19 wherein the third inflatable chamber functions as an inflatable support column.

21. The airbag cushion as in claim 1 wherein one of the inflatable chambers is constructed to function as one or more second inflatable support columns.

22. The airbag cushion as in claim 1 wherein one of the inflatable chambers comprises a neck.

23. The airbag cushion as in claim 1 wherein the airbag cushion functions as a frontal airbag.

24. The airbag cushion as in claim 1 wherein the airbag cushion functions as an overhead airbag.

25. An inflatable airbag cushion comprising:

a first inflatable chamber;

a second inflatable chamber;

a third inflatable chamber, the first, second and third inflatable chambers being in fluid communication with each other, the airbag cushion constructed such that when inflated, the first chamber intersects the second chamber to form a first angle, the second and third inflatable chambers intersect to form a second angle, and the first and third inflatable chambers intersect to form a third angle; and

at least one tether attaching an outside portion of one of the inflatable chambers to an outside portion of a different inflatable chamber such that if the airbag cushion is inflated, the first, second, and third inflatable chambers form a generally triangular shape, wherein one of the inflatable chambers functions as an inflatable impact chamber that is capable of receiving the impact of a vehicle occupant during a crash and one of the remaining inflatable chambers functions as one or more inflatable support columns capable of providing compression resistance to the inflatable impact chamber.

26. The inflatable airbag cushion of claim 25 wherein the measure of the first angle is less than about 80°

.

27. The inflatable airbag cushion of claim 25 wherein the measure of the second angle is less than about 80°

.

28. The inflatable airbag cushion of claim 25 wherein the measure of the third angle is less than about 80°

.

29. The inflatable airbag cushion of claim 25 wherein the sum of the measures of the first, second, and third angles equals about 180°

.

30. The inflatable airbag cushion of claim 25 wherein the measures of the first, second, and third angles are substantially equal.

31. The airbag cushion as in claim 25 further comprising an inflation port in fluid communication with the airbag cushion.

32. The airbag cushion as in claim 25 wherein one of the inflatable chambers comprises a neck.

33. The airbag cushion as in claim 25 wherein one or more of the inflatable chambers comprises a body.

34. The airbag cushion as in claim 25 wherein one or more of the inflatable chambers comprises a cutout.

35. The airbag cushion as in claim 25 wherein the airbag cushion functions as a frontal airbag.

36. The airbag cushion as in claim 25 wherein the airbag cushion functions as an overhead airbag.

37. An inflatable airbag cushion comprising:

an inflatable impact chamber that is capable of receiving the impact of a vehicle occupant during a crash;

an inflatable support column capable of providing compression resistance to the inflatable impact chamber;

a second inflatable support column capable of providing compression resistance to the inflatable impact chamber; and

at least one tether attached to the airbag cushion such that if the airbag cushion is inflated, the inflatable impact chamber, the inflatable support column, and the second inflatable support column form a generally triangular shape.

38. The inflatable airbag cushion of claim 37 wherein the second inflatable support column comprises a neck adjacent to a first end and a body adjacent to a second end.

39. The inflatable airbag cushion of claim 37 further comprising an inflation port.

40. The inflatable airbag cushion of claim 37 wherein the airbag cushion functions as a frontal airbag.

41. The inflatable airbag cushion of claim 37 wherein the airbag cushion functions as an overhead airbag.

42. The inflatable airbag cushion of claim 37 wherein one or more of the inflatable chamber and the inflatable columns comprises a neck.

43. The inflatable airbag cushion of claim 37 wherein one or more of the inflatable chamber and the inflatable columns comprises a body.

44. The inflatable airbag cushion of claim 37 wherein one or more of the inflatable chamber and the inflatable columns comprises a cutout.