SIDE CURTAIN AIRBAG FOR VEHICLE

• US 20170008478A1
• Filed: 01/13/2015
• Published: 01/12/2017
• Est. Priority Date: 02/12/2014
• Status: Active Grant

• Current Assignee: Autoliv AB (Autoliv Incorporated)
• Original Assignee: Autoliv AB (Autoliv Incorporated)
• Inventors: KIM, Chi Ho, LEE, Soon-Bok, WON, Tae Ik, KRUSE, Dion
• Granted Patent: US 9,919,675 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60R 2021/0048 Head
• CPC Class Codes: B60R 2021/161 characterised by additional means for controlling deployment trajectory
• CPC Class Codes: B60R 2021/23386 External tether means
• 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 21/237 characterised by the way they are folded

Abstract

A side curtain airbag for a vehicle includes an inner panel facing an interior of the vehicle, an outer panel facing the inner panel, a stopper chamber configured to prevent a head of an occupant seated on the vehicle from being moved toward a front side of the vehicle, a forward chamber arranged at a front side of the stopper chamber, and a rearward chamber arranged at a rear side of the stopper chamber. The forward chamber and the rearward chamber are arranged to be adjacent to each other such that in a non-inflation state of the airbag, a portion in which the stopper chamber is located is folded at least one time to form an overlapped portion.

Claims

1. A side curtain airbag for a vehicle, the side curtain airbag comprising:

an inner panel facing an interior of the vehicle;

an outer panel facing the inner panel;

a stopper chamber configured to prevent a head of an occupant seated on the vehicle from being moved toward a front side of the vehicle;

a forward chamber arranged at a front side of the stopper chamber; and

a rearward chamber arranged at a rear side of the stopper chamber,

wherein the forward chamber and the rearward chamber are arranged to be adjacent to each other such that in a non-inflation state of the airbag, and wherein a portion in which the stopper chamber is located is folded at least one time to form an overlapped portion.

2. The airbag according to claim 1, wherein the stopper chamber is provided in at least one of a front seat space and a rear seat space of the vehicle.

3. The airbag according to claim 1, further comprising:

a front end side chamber defined by a front end side chamber wall to correspond to the front side of the vehicle;

a front chamber defined by a front chamber wall to be adjacent to the front end side chamber; and

a front stopper chamber interposed between the front end side chamber and the front chamber to prevent the head of the occupant from being moved toward the front side of the vehicle.

4. The airbag according to claim 3, wherein the front end side chamber wall is arranged to be adjacent to the front chamber wall such that in the non-inflation state of the airbag, the front stopper chamber protrudes toward the interior of the vehicle and includes an overlapped portion formed by folding a portion in which the front stopper chamber is located at least one time;

and

upper ends and lower ends of the overlapped portion of the front stopper chamber are sewed to each other respectively through a sewing line.

5. The airbag according to claim 4, wherein the front end side chamber wall and the front chamber wall are coupled to each other by a sewing line or a tether member.

6. The airbag according to claim 1, wherein the overlapped portion is located on the inner panel toward a rear side of the vehicle.

7. The airbag according to claim 4, further comprising:

a front strap having one end coupled to a front vehicle body of the vehicle and the other end coupled to the front end side chamber wall and the front chamber wall adjacent to the front end side chamber wall.

8. The airbag according to claim 1, further comprising:

a strength reinforcement member coupled to an outside of the stopper chamber to reinforce a force for supporting the stopper chamber.

9. The airbag according to claim 8, wherein the strength reinforcement member includes a tether member having one end coupled to the outside of the stopper chamber, the outside facing the interior of the vehicle, and the other end fixedly coupled to at a predetermined location such that the stopper chamber is pulled toward a rear side of the vehicle.

10. The airbag according to claim 1, wherein the airbag is configured to prevent the stopper chamber from being moved toward the front side of the vehicle by increasing an inflation volume of the forward chamber arranged at the front side of the stopper chamber.