Airbag arrangement

• US 8,585,080 B2
• Filed: 10/11/2010
• Issued: 11/19/2013
• Est. Priority Date: 10/16/2009
• Status: Active Grant

• Current Assignee: Autoliv Development AB (Autoliv Incorporated)
• Original Assignee: Autoliv Development AB (Autoliv Incorporated)
• Inventors: Svensson, Carl-Johan, Henriksson, Ola, Andersson, Stefan, Kjell, Fredrik, Trevena, Tony
• Primary Examiner(s): Fleming, Faye M.
• Application Number:
  US13/501,270
• Publication Number:
  US 20120200071A1
• Time in Patent Office: 1,135 Days
• Field of Search: 280/730.2, 280/728.2
• US Class Current: 280/730.2
• CPC Class Codes: B60R 2021/23308 the individual compartments defining the external shape of the bag
• CPC Class Codes: B60R 21/213 in vehicle roof frames or pillars
• CPC Class Codes: B60R 21/232 Curtain-type airbags deploying mainly in a vertical direction from their top edge
• CPC Class Codes: B60R 21/2346 Soft diffusers
• CPC Class Codes: B60R 21/237 characterised by the way they are folded

Abstract

An airbag arrangement with an inflatable curtain airbag for a vehicle includes fixation elements to fix the inflatable curtain airbag to the interior side structure of the vehicle. The airbag further includes an inflatable area to cover parts of the interior side structure of the vehicle. A fender airbag is provided adjacent to the inflatable area and/or the fixation elements of the inflatable curtain airbag. The fender airbag is inflated with a time delay with respect to the inflation of the inflatable area of the inflatable curtain airbag.

Claims

1. An airbag arrangement for a vehicle comprising:

an inflatable curtain airbag having an inflatable area;

fixation elements for fixing the inflatable curtain airbag to a structure of the vehicle; and

a fender airbag adjacent to the inflatable area and/or the fixation elements, the fender airbag inflated with a time delay with respect to inflation of the inflatable area of the inflatable curtain airbag;

wherein the inflatable curtain airbar is rolled in a P-roll and the inflatable area and the fender airbag are rolled in the P-roll in opposite directions.

2. The airbag arrangement according to claim 1, wherein the fender airbag is arranged between the inflatable area and/or the fixation elements of the inflatable curtain airbag on one side and the structure of the vehicle on the other side.

3. The airbag arrangement according to claim 1, wherein the fender airbag and the inflatable area of the inflatable curtain airbag are connected via a flow connection.

4. The airbag arrangement according to claim 3, wherein the flow connection is a constriction, and the time delay between the inflation of the inflatable area and the fender airbag is realized by friction of a gas flow in the constriction.

5. The airbag arrangement according to claim 1, wherein the fender airbag is located close to an attachment element, the inflatable curtain airbag fixed to the structure of the vehicle.

6. The airbag arrangement according to claim 1, wherein the fender airbag and the inflatable curtain airbag are fixed at one common attachment element to the structure of the vehicle.

7. The airbag arrangement according to claim 1, wherein the fender airbag is part of the inflatable curtain airbag.

8. The airbag arrangement according to claim 5, wherein the inflatable curtain airbag is mounted at an attachment element which is located above a window, and the fender airbag is supported by a part of the structure between the window and the attachment element.

9. The airbag arrangement according to claim 1, wherein the fender airbag is wound around the inflatable area prior to the inflation.

10. An airbag arrangement for a vehicle comprising:

an inflatable curtain airbag having an inflatable area, the inflatable curtain airbag rolled in a P-roll prior to inflation; and

a fender airbag arranged upon inflation between the inflatable curtain airbag and a structure of the vehicle inflated with a time delay with respect to the inflation of the inflatable area of the inflatable curtain airbag;

wherein the inflatable area and the fender airbag are rolled in the P-roll in opposite directions.

11. The airbag arrangement of claim 10, further comprising a common fixation element for fixing the inflatable curtain airbag and the fender airbag to the vehicle.

12. The airbag arrangement of claim 10, wherein the fender airbag is inflated with a time delay with respect to the inflation of the inflatable area of the inflatable curtain airbag.

13. The airbag arrangement of claim 10, wherein the fender airbag is defined by a chamber of the inflatable curtain airbag.

14. The airbag arrangement of claim 12, wherein the fender airbag and the inflatable area of the inflatable curtain airbag are connected via a flow connection.

15. The airbag arrangement of claim 14, wherein the flow connection is a constriction, and the time delay between the inflation of the inflatable area and the fender airbag is realized by friction of a gas flow in the constriction.

16. The airbag arrangement of claim 10, wherein the inflatable area is inflatable in a downward direction between an occupant and an interior side structure of the vehicle.

17. A curtain airbag comprising:

a first inflatable portion, the first inflatable portion rolled in a P-roll prior to inflation; and

a second inflatable portion dependent from the first inflatable portion;

wherein the first inflatable portion and the second inflatable portion are rolled in the P-roll in opposite directions.

18. The curtain airbag of claim 17, wherein the second inflatable portion is inflated with a time delay with respect to inflation of the first inflatable portion.

19. The curtain airbag of claim 18, wherein the first and second inflatable portions are connected at a flow connection.

20. The curtain airbag of claim 19, wherein the flow connection is a constriction, and the time delay between the inflation of the first inflatable portion and the second inflatable portion is realized by friction of a gas flow in the constriction.