Airbag system for vehicle

• US 20090295131A1
• Filed: 11/28/2008
• Published: 12/03/2009
• Est. Priority Date: 06/03/2008
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: KIM, Eung Seo
• Granted Patent: US 8,087,690 B2
• Time in Patent Office: Days
• US Class Current: 280/730.1
• CPC Class Codes: B60R 2021/23161 specially adapted for protecting at least two passengers, e.g. preventing them from hitting each other
• CPC Class Codes: B60R 21/214 in roof panels
• CPC Class Codes: B60R 21/231 characterised by their shape, construction or spatial configuration

Abstract

An airbag system for a vehicle may include an inflator for supplying gas pressure, an airbag housing installed in a vehicle roof above a seat, and an airbag cushion installed in the airbag housing, wherein the airbag is deployed by tearing a roof headliner using the gas pressure provided from the inflator in such a way as to enclose upper portion of an occupant sitting on the seat.

Claims

1. An airbag system for a vehicle, comprising:

an inflator for supplying gas pressure;

an airbag housing installed in a vehicle roof above an occupant seat; and

an airbag cushion installed in the airbag housing, wherein the airbag is deployed by tearing a roof headliner using the gas pressure provided from the inflator in such a way as to enclose an upper portion of an occupant sitting on the occupant seat.

2. The airbag system for a vehicle of the claim 1, wherein the airbag housing is disposed between a roof panel and the roof headliner.

3. The airbag system for a vehicle of the claim 1, wherein in non-deployed state, the airbag cushion is folded in a shape of a hollow hoop.

4. The airbag system for a vehicle of the claim 3, wherein in deployed state, the airbag cushion is hollow-tube shaped.

5. The airbag system of claim 1, wherein a protrusion is formed on a front surface of the airbag cushion to protect the occupant from being injured by a steering wheel.

6. The airbag system of claim 5, wherein the protrusion comprises a protruding chamber which is fluidly isolated from the airbag cushion.

7. The airbag system of claim 1, wherein the airbag cushion is configured to have at least a chamber connected along a circumference of the airbag cushion, extending in a vertical direction thereof.

8. The airbag system of claim 7, wherein the chambers fluid-communicate with one another.

9. The airbag system of claim 7, wherein the chambers are column shaped.

10. The airbag system of claim 7, wherein a protrusion is formed on a front surface of the airbag cushion to protect the occupant from being injured by a steering wheel.

11. The airbag system of claim 10, wherein the protrusion comprises a protruding chamber which communicates with other chambers.

12. The airbag system of claim 1, wherein the airbag cushion is configured to enclose the chest and shoulders of the occupant sitting on the occupant seat upon deployment thereof.

13. The airbag system of claim 1, wherein the airbag cushion is formed such that a front portion thereof has a height greater than that of a rear portion thereof.

14. The airbag system of claim 1, wherein a cover is delimited in the roof headliner by a perforated line so that force for deploying the airbag cushion can be applied to the cover.

15. The airbag system of claim 14, wherein the cover is connected to the roof panel.

16. The airbag system of claim 14, wherein the airbag cushion is aligned substantially along the perforated line and positioned thereon.

17. The airbag system of claim 1, wherein the inflator is installed on the roof headliner.

18. The airbag system of claim 17, wherein the inflator is installed on the roof headliner adjacent to a front windshield glass in a traverse direction of the vehicle.

19. The airbag system of claim 1, wherein the inflator is installed on pillar.

20. A passenger vehicle comprising the airbag system of claim 1.