Airbag assembly configured to be disposed on multiple sides of an occupant of a vehicle and configured to allow the head of the occupant to rotate forward with the torso of the occupant

• US 10,315,609 B2
• Filed: 10/16/2017
• Issued: 06/11/2019
• Est. Priority Date: 10/16/2017
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Thomas, Scott D.
• Primary Examiner(s): Fleming, Faye M
• Application Number:
  US15/784,468
• Publication Number:
  US 20190111883A1
• Time in Patent Office: 603 Days
• CPC Class Codes: B60R 2021/0048 Head
• CPC Class Codes: B60R 2021/23192 Roof bags, i.e. protecting the occupant in a roll-over situation
• CPC Class Codes: B60R 2021/23382 Internal tether means
• CPC Class Codes: B60R 2021/23386 External tether means
• CPC Class Codes: B60R 2021/23514 coated fabric
• CPC Class Codes: B60R 2021/23576 Sewing
• CPC Class Codes: B60R 2021/2612 Gas guiding means, e.g. ducts
• CPC Class Codes: B60R 21/213 in vehicle roof frames or pillars
• CPC Class Codes: B60R 21/231 characterised by their shape, construction or spatial configuration
• CPC Class Codes: B60R 21/232 Curtain-type airbags deploying mainly in a vertical direction from their top edge
• CPC Class Codes: B60R 21/2338 Tethers
• CPC Class Codes: B60R 21/235 characterised by their material
• CPC Class Codes: B60R 21/261 with means other than bag structure to diffuse or guide inflation fluid
• CPC Class Codes: B60R 21/262 Elongated tubular diffusers, e.g. curtain-type

Abstract

An airbag assembly of the present disclosure includes a forward cushion portion, a left side cushion portion, and a right side cushion portion. The forward cushion portion is configured to be disposed in front of an occupant of a vehicle. The left and right side cushion portions are connected to and in fluid communication with the forward cushion portion, are configured to be disposed on left and right sides of the occupant, respectively, and are configured to be mounted to a roof of the vehicle. The left side cushion portion, the right side cushion portion, and the forward cushion portion define at least one opening disposed above a lower region of the forward cushion portion and between the left and right side cushion portions. The at least one opening allows at least a portion of the lower region to move forward relative to the left and right side cushion portions.

Claims

1. An airbag assembly comprising:

a forward cushion portion configured to be disposed in front of an occupant of a vehicle, the forward cushion portion including a lower region;

a left side cushion portion connected to and in fluid communication with the forward cushion portion, configured to be disposed on a left side of the occupant, and configured to be mounted to a roof of the vehicle; and

a right side cushion portion connected to and in fluid communication with the forward cushion portion, configured to be disposed on a right side of the occupant, and configured to be mounted to the vehicle roof, wherein the left side cushion portion, the right side cushion portion, and the forward cushion portion define at least one opening disposed above the lower region of the forward cushion portion and between the left and right side cushion portions, the at least one opening allowing at least a portion of the lower region to move forward relative to the left and right side cushion portions.

2. The airbag assembly of claim 1 wherein:

the forward cushion portion further includes a left upper region configured to be mounted to the vehicle roof and a right upper region configured to be mounted to the vehicle roof; and

the lower region of the forward cushion portion is disposed below and in fluid communication with the left and right upper regions.

3. The airbag assembly of claim 2 wherein:

each of the left and right upper regions of the forward cushion portion includes a first fill tube configured to provide fluid communication between an inflator and one of the left and right side cushion portions, and a tether connecting the first fill tube to the lower region of the forward cushion portion; and

the tethers of the left and right upper regions divide the at least one opening into a first opening, a second opening, and a third opening, the first opening being disposed between the tethers, the second opening separating the tether of the left upper region from the left side cushion portion, the third opening separating the tether of the right upper region from the right side cushion portion.

4. The airbag assembly of claim 3 wherein:

the lower region includes a lower portion that is attached to the left and right side cushion portions and an upper portion that is separated from the left and right side cushion portions by the second and third openings;

the lower portion of the lower region has a first cross-sectional area in a first vertical plane adjacent to the left and right side cushion portions and a second cross-sectional area in a second vertical plane at or near a midpoint of the forward cushion portion in a direction extending between the left and right side cushion portions; and

the second cross-sectional area is greater than the first cross-sectional area.

5. The airbag assembly of claim 3 wherein the tether is a second fill tube that places the first fill tube in fluid communication with the lower region of the forward cushion portion.

6. The airbag assembly of claim 3 wherein the tether has a length that is greater than a distance between the first fill tube and the lower region of the forward cushion portion.

7. The airbag assembly of claim 1 further comprising a rigid fill tube configured to deliver gas from an inflator to each of the forward cushion portion, the left side cushion portion, and the right side cushion portion, wherein the rigid fill tube includes a straight segment extending through the forward cushion portion and a pair of curved segments that each extends from the straight segment to one of the left and right side cushion portions through an angle greater than 45 degrees.

8. The airbag assembly of claim 1 further comprising at least one of:

a left rear cushion portion in fluid communication with the left side cushion portion, configured to be disposed rearward of the occupant, and configured to be mounted to the vehicle roof; and

a right rear cushion portion in fluid communication with the right side cushion portion, configured to be disposed rearward of the occupant, and configured to be mounted to the vehicle roof.

9. The airbag assembly of claim 8 wherein the at least one of the left and right rear cushion portions is configured to be disposed adjacent to one side of a head restraint for the occupant without being disposed behind the head restraint.

10. The airbag assembly of claim 8 wherein the at least one of the left and right rear cushion portions is configured to be disposed behind a head restraint for the occupant.

11. An airbag assembly comprising:

a forward cushion portion configured to be disposed in front of an occupant of a vehicle; and

a first side cushion portion in fluid communication with the forward cushion portion, configured to be disposed on a first side of the occupant, and configured to be mounted to a roof of the vehicle, the first side cushion portion having an upper horizontal edge, a lower horizontal edge, a front edge, and a rear edge, the first side cushion portion including an inner panel portion, an outer panel portion, and a plurality of seams joining the inner and outer panel portions to one another and defining a plurality of elongated inflated regions, wherein the plurality of seams are oriented at an angle between 30 degrees and 60 degrees with respect to the upper horizontal edge.

12. The airbag assembly of claim 11 wherein the first side cushion portion further includes a first inflated region disposed rearward of the plurality of elongated inflated regions, each of the plurality of elongated inflated regions having a first width between the inner and outer panel portions, the first inflated region having a second width between the inner and outer panel portions that is greater than the first width.

13. The airbag assembly of claim 11 wherein the forward cushion portion includes an inner panel portion, an outer panel portion, and at least one seam joining the inner and outer panel portions of the forward cushion portion to one another and defining at least one boundary between at least two lobes of the forward cushion portion.

14. The airbag assembly of claim 13 wherein the forward cushion portion further includes a panel attached to upper and lower edges of the forward cushion portion and extending over the at least two lobes to provide a flat surface configured to face the occupant.

15. The airbag assembly of claim 13 wherein the forward cushion portion further includes a tether disposed within at least one of the at least two lobes, joining the inner and outer panel portions to one another, and flattening the inner panel portion.

16. An airbag assembly comprising:

a side cushion portion configured to be disposed on one side of an occupant of a vehicle, the side cushion portion including an inner panel portion, an outer panel portion, and a first seam joining the inner and outer panel portions to one another and defining a boundary between a forward inflated region of the side cushion portion and a rearward inflated region of the side cushion portion, wherein the forward inflated region is configured to be disposed at least partially forward of the occupant and the rearward inflated region is configured to be disposed at least partially rearward of the occupant, the forward inflated region having a first width between the inner and outer panel portions, the rearward inflated region having a second width between the inner and outer panel portions that is greater than the first width; and

a mounting tab connected to the side cushion portion and configured to be attached to a roof of the vehicle.

17. The airbag assembly of claim 16 wherein the second width is at least two times greater than the first width.

18. The airbag assembly of claim 16 wherein the rearward inflated region is aligned with at least one of a seatback for the occupant and a head restraint for the occupant in a fore-aft direction of the vehicle.

19. The airbag assembly of claim 16 wherein the rearward inflated region forms at least one of multiple air-filled chambers disposed above a seatback for the occupant and adjacent to one side of a head restraint for the occupant.

20. The airbag assembly of claim 19 further comprising a rear cushion portion in fluid communication with the side cushion portion, the rear cushion portion including an inner panel portion, an outer panel portion, second and third seams joining the inner and outer panel portions to one another, and an end that is joined to the side cushion portion at the first seam, the first and second seams defining a first one of the air-filled chambers therebetween, the second and third seams defining a second one of the air-filled chambers therebetween, the third seam and the end of the rear cushion portion defining a third one of the air-filled chambers therebetween.