Curtain airbag device

• US 20050275200A1
• Filed: 06/10/2005
• Published: 12/15/2005
• Est. Priority Date: 06/14/2004
• Status: Active Grant

• Current Assignee: Joyson Safety Systems Japan K.K.
• Original Assignee: Takata Corporation (Ningbo Junsheng Investment Group Co., Ltd.)
• Inventors: Noguchi, Atsushi, Mitsuo, Tetsu
• Granted Patent: US 7,434,831 B2
• Time in Patent Office: Days
• US Class Current: 280/730.200
• 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

Abstract

A curtain airbag device for holding a vehicle occupant inside a vehicle cabin at a region of the curtain airbag. A front region of the curtain airbag may be provided with non-inflatable portions. Attachment parts may extending from an upper section, a lower section, and an intermediate section of a front edge of the curtain airbag an attach to a front pillar of the vehicle. When the curtain airbag is inflated, high tensions are generated at areas which are rear extensions of the attachment parts, whereby the front region of the curtain airbag forms a hammock-like structure.

Claims

1. A curtain airbag module comprising:

a curtain airbag adapted to extend along a front pillar and a roof side of a vehicle;

an inflator;

wherein a front edge of the curtain airbag is adapted to extend along the front pillar and the airbag is provided with attachment parts that are disposed at multiple sections of a front edge of the airbag with respect to a vertical direction, wherein the attachment parts are adapted to be mounted on the front pillar, and

wherein the attachment parts are adapted to be mounted at a common intermediate position or adjacent intermediate positions of the front pillar with respect to the vertical direction.

2. The curtain airbag module according to claim 1, wherein the attachment parts are adapted to be mounted on the front pillar with a common mounting component.

3. The curtain airbag module according to claim 1, wherein the attachment parts are provided in at least three sections of the front edge of the curtain airbag, said at least three sections including an upper section, a lower section, and an intermediate section of the airbag.

4. The curtain airbag module according to claim 1, wherein the attachment parts are provided in at least two sections of the front edge of the curtain airbag, said at least two sections including an upper section and a lower section of the airbag.

5. The curtain airbag module according to claim 1, wherein the front pillar has a length of L and the attachment parts are adapted to be mounted on the front pillar at a position within a distance range of (0.5×

L) to (0.9×

L) from a top end of the front pillar.

6. The curtain airbag module according to claim 1, wherein the attachment parts are adapted to be mounted to the front pillar with a spacing of 10 cm or less.

7. A curtain airbag module, comprising:

an inflator;

a curtain airbag adapted to extend along a side of a vehicle, wherein the airbag includes attachment parts adapted to be mounted to the vehicle,

wherein the attachment parts create high tensile areas and low tensile areas at an end of the airbag to cause the airbag to act like a hammock and restrain an occupant within the vehicle.

8. The curtain airbag module according to claim 7, wherein the attachment parts are adapted to be mounted on a front pillar or a rear pillar of the vehicle with a common mounting component.

9. The curtain airbag module according to claim 7, wherein the attachment parts are provided in at least three sections of a front edge or back edge of the curtain airbag, said at least three sections including an upper section, a lower section, and an intermediate section of the airbag.

10. The curtain airbag module according to claim 9, wherein the attachment parts are configured to create high tensile areas at the upper section, the intermediate section, and the lower section, and to create low tensile areas between the upper section and intermediate section and between the lower section and intermediate section.

11. The curtain airbag module according to claim 7, wherein the attachment parts are provided in at least two sections of a front edge or a back edge of the curtain airbag, said at least two sections including an upper section and a lower section of the airbag.

12. The curtain airbag module according to claim 11, wherein the attachment parts create high tensile areas at the upper section and the lower section, and the attachment parts create a low tensile area between the upper section and the lower section.

13. The curtain airbag module according to claim 7, wherein a pillar has a length of L and the attachment parts are adapted to be mounted on a front pillar or a back pillar of the vehicle at a position within a distance range of (0.5×

L) to (0.9×

L) from a top end of the pillar.

14. The curtain airbag module according to claim 7, wherein the attachment parts are adapted to be mounted to a front pillar or a back pillar of the vehicle with a spacing of 10 cm or less.

15. A curtain airbag, comprising:

a curtain airbag with attachment parts provided at an end of the airbag, wherein the attachment parts are adapted to be mounted on a vehicle;

wherein the attachment parts create a tension at an end of the airbag to cause the airbag to act like a hammock and restrain an occupant within the vehicle.

16. The curtain airbag according to claim 15, wherein the attachment parts are adapted to be mounted on a front pillar of the vehicle with a common mounting component.

17. The curtain airbag according to claim 15, wherein the attachment parts are provided in at least three sections of a front edge of the curtain airbag, said at least three sections including an upper section, a lower section, and an intermediate section of the airbag.

18. The curtain airbag according to claim 17, wherein the attachment parts create high tensile areas at the upper section, the intermediate section, and the lower section, and the attachment parts create low tensile areas between the upper section and intermediate section and between the lower section and intermediate section.

19. The curtain airbag according to claim 15, wherein the attachment parts are provided in at least two sections of a front edge of the curtain airbag, said at least two sections including an upper section and a lower section of the airbag.

20. The curtain airbag according to claim 19, wherein the attachment parts create high tensile areas at the upper section and the lower section, and the attachment parts create a low tensile area between the upper section and the lower section.

21. The curtain airbag according to claim 15, wherein a front pillar of the vehicle has a length of L and the attachment parts are adapted to be mounted on the front pillar of the vehicle at a position within a distance range of (0.5×

L) to (0.9×

L) from a top end of the front pillar.

22. The curtain airbag according to claim 15, wherein the attachment parts are adapted to be mounted to a front pillar of the vehicle with a spacing of 10 cm or less.