Pillar-mounted frontal airbag

• US 6,808,198 B2
• Filed: 03/20/2002
• Issued: 10/26/2004
• Est. Priority Date: 03/20/2002
• Status: Active Grant

• Current Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Original Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Inventors: Fredin, Steven R., Schneider, David W.
• Primary Examiner(s): Dunn, David R.
• Application Number:
  US10/104,209
• Publication Number:
  US 20030178821A1
• Time in Patent Office: 951 Days
• Field of Search: 280/730.1, 280/730.2, 280/736, 280/743.1, 280/743.2, 280/728, 280/728.2
• US Class Current: 280/730.1
• CPC Class Codes: B60R 21/213 in vehicle roof frames or pillars
• CPC Class Codes: B60R 21/237 characterised by the way they are folded

Abstract

A pillar-mounted airbag module is disclosed. The frontal airbag module of the invention includes an airbag cushion configured to be deployed from a pillar of a vehicle and an airbag inflator coupled to the airbag cushion, the airbag inflator being suitable for attachment to a pillar of a vehicle. The frontal airbag module of the invention is configured to deploy the airbag cushion laterally along a windshield of the vehicle and then to subsequently inflate the airbag cushion toward the vehicle occupant.

Claims

1. An airbag module for protecting a vehicle occupant, the airbag module comprising:

an inflator; and

an airbag cushion having an inflation orifice, wherein the inflator is coupled to the airbag cushion at the inflation orifice, the airbag module being adapted to be installed into a side pillar of a vehicle;

wherein the airbag cushion is sufficiently elongated in shape and folded such that when the airbag module is installed in a side pillar of a vehicle, initiation of the inflator causes the airbag cushion to first inflate substantially laterally along a windshield of the vehicle between a vehicle occupant and a structure of the vehicle, and to subsequently inflate the airbag cushion substantially toward the vehicle occupant.

2. The airbag module of claim 1, wherein the airbag cushion comprises an upper panel coupled to a central panel that is coupled to a lower panel, wherein one of said panels includes the inflation orifice.

3. The airbag module of claim 2, wherein the inflation orifice is positioned in the central panel of the airbag cushion.

4. The airbag module of claim 3, wherein the inflation orifice comprises a narrowed throat region of the airbag cushion.

5. The airbag module of claim 1, wherein the airbag module is adapted to be installed into the A-pillar of the vehicle.

6. The airbag module of claim 1, wherein the airbag module is adapted to be installed into the B-pillar of the vehicle.

7. The airbag module of claim 1, wherein the airbag module is adapted to be installed into the C-pillar of the vehicle.

8. The airbag module of claim 1, further comprising a vehicular trim panel.

9. The airbag module of claim 1, wherein the airbag cushion is a driver'"'"'s side airbag.

10. The airbag module of claim 1, wherein the airbag cushion is a passenger'"'"'s side airbag.

11. The airbag module of claim 1, further comprising at least one tether to help properly position the airbag cushion during inflation.

12. The airbag module of claim 1, wherein the airbag inflator is substantially cylindrical in shape.

13. The airbag module of claim 1, wherein the airbag cushion is folded according to a method comprising the steps of:

providing an elongated airbag having an inflation orifice on an outer edge of the airbag cushion, the airbag cushion comprising an upper panel, a lower panel, and a central panel;

flattening said airbag by drawing the inflation orifice in a first direction and flattening the central panel moving away from the inflation orifice such that the central panel comprises a transverse fold at an end opposite the inflation orifice and the upper and lower panels are longitudinally folded;

tucking the upper and lower panels inwardly toward the central panel to form at least one longitudinal pleat; and

folding the airbag transversely beginning at the end opposite the inflation orifice to form at least one transverse fold, wherein said method of folding renders the airbag suitable for deployment from a vehicle pillar.

14. The airbag module of claim 13, wherein the method of folding an airbag results in at least two longitudinal pleats.

15. The airbag module of claim 13, wherein the method of folding an airbag results in at least two transverse folds.

16. An airbag module for protecting a vehicle occupant, the airbag module comprising:

an inflator; and

an airbag cushion having a mounting face, a contact face, and an inflation orifice, the mounting face being situated at an angle to the contact face, and the inflation orifice being positioned on said mounting face, wherein the inflator is coupled to the airbag cushion at the inflation orifice, the airbag module being adapted to be installed into a side pillar of a vehicle;

wherein upon initiation of the inflator when the airbag module is folded and installed in a side pillar of a vehicle, the airbag cushion is caused to first inflate substantially laterally alone a windshield of the vehicle between a vehicle occupant and a structure of the vehicle and to subsequently deploy the airbag cushion substantially toward the vehicle occupant.

17. The airbag module of claim 16, wherein the airbag cushion comprises an upper panel coupled to a central panel which is coupled to a lower panel.

18. The airbag module of claim 17, wherein the central panel of the airbag cushion comprises the inflation orifice.

19. The airbag module of claim 18, wherein the inflation orifice comprises a narrowed throat region of the airbag cushion.

20. The airbag module of claim 16, wherein the airbag module is adapted to be installed into the A-pillar of the vehicle.

21. The airbag module of claim 16, wherein the airbag module is adapted to be installed into the B-pillar of the vehicle.

22. The airbag module of claim 16, wherein the airbag module is adapted to be installed into the C-pillar of the vehicle.

23. The airbag module of claim 16, further comprising a vehicular trim panel.

24. The airbag module of claim 16, wherein the airbag cushion is a driver'"'"'s side airbag.

25. The airbag module of claim 16, wherein the airbag cushion is a passenger'"'"'s side airbag.

26. The airbag module of claim 16, further comprising at least one tether to help properly position the airbag cushion during inflation.

27. The airbag module of claim 16, wherein the airbag inflator is substantially cylindrical in shape.

28. The airbag module of claim 16, wherein the airbag cushion is folded according to a method comprising the steps of:

providing an elongated airbag having an inflation orifice on an outer edge of the airbag cushion, the airbag cushion comprising an upper panel, a lower panel, and a central panel;

flattening said airbag by drawing the inflation orifice in a first direction and flattening the central panel moving away from the inflation orifice such that the central panel comprises a transverse fold at an end opposite the inflation orifice and the upper and lower panels are longitudinally folded;

tucking the upper and lower panels inwardly toward the central panel to form at least one longitudinal pleat; and

folding the airbag transversely beginning at the end opposite the inflation orifice to form at least one transverse fold, wherein said method of folding renders the airbag suitable for deployment from a vehicle pillar.

29. The airbag module of claim 28, wherein the method of folding an airbag results in at least two longitudinal pleats.

30. The airbag module of claim 28, wherein the method of folding an airbag results in at least two transverse folds.

31. An airbag module for protecting a vehicle occupant, the airbag module comprising:

an elongated airbag cushion having an inflation orifice located on an outer edge of the airbag cushion; and

an airbag inflator coupled to the inflation orifice of the airbag cushion, the airbag inflator being suitable for attachment to a side pillar of a vehicle;

wherein when installed in a side pillar of a vehicle, the airbag is folded such that initiation of the inflator causes the airbag cushion to first inflate substantially laterally along a windshield of the vehicle and then to subsequently inflate substantially toward the occupant.

32. The airbag module of claim 31, wherein the elongated airbag cushion comprises an upper panel, a lower panel, and a central panel.

33. The airbag module of claim 32, wherein the airbag cushion is configured to be a driver'"'"'s side airbag cushion.

34. The airbag module of claim 32, wherein the airbag cushion is configured to be a passenger'"'"'s side airbag cushion.

35. The airbag module of claim 32, wherein the central panel of the airbag further comprises the inflation orifice.

36. The airbag module of claim 31, wherein the airbag module further comprises a trim panel.

37. The airbag module of claim 31, wherein the airbag inflator is substantially cylindrical.

38. The airbag module of claim 31, wherein the airbag module further comprises at least one tether to help properly position the airbag cushion during inflation.

39. The airbag module of claim 31, wherein the airbag cushion is folded according to a method comprising the steps of:

providing an elongated airbag having an inflation orifice on an outer edge of the airbag cushion, the airbag cushion comprising an upper panel, a lower panel, and a central panel;

flattening said airbag by drawing the inflation orifice in a first direction and flattening the central panel moving away from the inflation orifice such that the central panel comprises a transverse fold at an end opposite the inflation orifice and the upper and lower panels are longitudinally folded;

tucking the upper and lower panels inwardly toward the central panel to form at least one longitudinal pleat; and

folding the airbag transversely beginning at the end opposite the inflation orifice to form at least one transverse fold, wherein said method of folding renders the airbag suitable for deployment from a vehicle pillar.

40. The airbag module of claim 39, wherein the method of folding an airbag results in at least two longitudinal pleats.

41. The airbag module of claim 39, wherein the method of folding an airbag results in at least two transverse folds.

42. A method of decelerating a vehicle occupant during a collision event comprising deploying an elongated airbag cushion having an inflation orifice on a lateral face of the airbag cushion from a side pillar of a vehicle, wherein the airbag cushion deploys by first inflating substantially laterally along a windshield of the vehicle between the vehicle occupant and a structure of the vehicle, and then to subsequently inflate the airbag cushion substantially toward the vehicle occupant.

43. The method of claim 42, wherein the airbag cushion is deployed from the A pillar of the vehicle.

44. A method of decelerating a vehicle occupant during a collision event comprising the steps of:

providing an airbag module comprising an elongated airbag cushion having an inflation orifice on a lateral face of the airbag cushion and an airbag inflator coupled to the airbag cushion, the airbag inflator being configured to be attached to a pillar of a vehicle;

installing the airbag module in the pillar of a vehicle; and

deploying the airbag cushion from the pillar of a vehicle during a collision event, wherein the airbag cushion first inflates substantially laterally along a windshield of the vehicle between a vehicle occupant and a structure of the vehicle and then subsequently inflates the airbag cushion substantially toward the vehicle occupant.

45. The method of claim 44, wherein the pillar is the A pillar of the vehicle.

46. The method of claim 44, wherein the airbag cushion comprises an upper panel, a central panel, and a lower panel.