Curtain Airbag

• US 20090058051A1
• Filed: 09/04/2007
• Published: 03/05/2009
• Est. Priority Date: 09/04/2007
• Status: Abandoned Application

• Current Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Original Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Inventors: Taylor, Ian, Bradburn, Alan, Hatfield, Mark
• Application Number:
  US11/849,441
• Publication Number:
  US 20090058051A1
• Time in Patent Office: Days
• US Class Current: 280/729
• CPC Class Codes: B60R 2021/2615 for diverting the gas into a plurality of bags
• CPC Class Codes: B60R 21/232 Curtain-type airbags deploying mainly in a vertical direction from their top edge

Abstract

In order to provide a curtain airbag that is of light weight, that is less expensive and easy to manufacture and that protects securely body parts from coming into a position outside the car, the invention refers to a curtain airbag which comprises a first section having two side walls enclosing a first gas chamber, a second section having two side walls enclosing a second gas chamber, a tube made of a flexible material extending between the first and the second section and connecting the first gas chamber with the second gas chamber and a non-inflatable intermediate section connecting the first and the second section and being connected to the first section by a first seam, to the second section by a second seam, and to the tube by a third seam.

Claims

1. Curtain airbag comprising:

a first section having two side walls enclosing a first gas chamber;

a second section having two side walls enclosing a second gas chamber.

a tube made of a flexible material extending between the first and the second section and connecting the first gas chamber with the second gas chamber.

a non-inflatable intermediate section connecting the first and the second section and being connected to the first section by a first seam, to the second section by a second seam, and to the tube by a third seam.

2. Curtain airbag according to claim 1, characterised in that at least one of the seams is a sewn seam.

3. Curtain airbag according to claim 2, characterised in that all seams are sewn seams.

4. Curtain airbag according to claim 2, characterised in that the sewn seams are sealed by applying an adhesive.

5. Curtain airbag according to claim 1, characterised in that said tube being made of a least one cutting and being closed by at least one tube closing seam.

6. Curtain airbag according to claim 5, characterised in that said third seam and said tube closing seam are the same seam.

7. Curtain airbag according to claim 6, characterised in that first seam, second seam and tube closing seam are sections of a single seam.

8. Curtain airbag according to claim 1, characterised in that a receiving section for receiving a gas generator extends from the tube.

9. Curtain airbag according to claim 8, characterised in that receiving section and tube are made of a single cutting.

10. Curtain airbag according to claim 9, characterised in that said cutting is H-shaped.

11. Curtain airbag according to claim 9, characterised in that the receiving section further comprises a reinforcement layer.

12. Curtain airbag according to claim 1, characterised in that the tube is made of a single tube cutting showing a longitudinal slit.

13. Curtain airbag according to claim 12, characterised in that a receiving cutting is attached to a non-slit area of the tube cutting forming a receiving section for a gas generator.

14. Curtain airbag according to claim 1, characterised in that more that two gas chambers are present.

15. Method for making a curtain airbag comprising:

a first section having two side walls enclosing a first gas chamber;

a second section having two side walls enclosing a second gas chamber;

a tube made of a flexible material extending between the first and the second section and connecting the first gas chamber with the second gas chamber;

said tube being made of a cutting such that in a pre-assembled state a longitudinal edge of the tube is open;

tube connecting seams connecting the tube to the first and the second section respectively;

a closing seam closing the open longitudinal edge;

with the closing seam being applied after the tube connecting seams.