GAS BAG ARRANGEMENT FOR A VEHICLE OCCUPANT RESTRAINT SYSTEM AND METHOD FOR MANUFACTURING SUCH GAS BAG ARRANGEMENT

• US 20120292891A1
• Filed: 05/17/2012
• Published: 11/22/2012
• Est. Priority Date: 05/18/2011
• Status: Active Grant

• Current Assignee: Joyson Safety Systems Germany GmbH (Ningbo Junsheng Investment Group Co., Ltd.)
• Original Assignee: Takata-Petri AG
• Inventors: KRAFT, Michael, BAUSENHART, Rainer, SCHMID, Manfred, GETZ, Robert
• Granted Patent: US 8,864,167 B2
• Time in Patent Office: Days
• US Class Current: 280/728.2
• 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 21/201 Packaging straps or envelopes for inflatable members
• 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: Y10T 29/49826 Assembling or joining

Abstract

A gas bag arrangement for a vehicle occupant restraint system of a motor vehicle. The gas bag arrangement comprising a gas bag package which includes a folded gas bag and a wrapping which at least partly surrounds the folded gas bag, at least one connecting strap for connecting the gas bag to a holding structure of the motor vehicle, wherein the connecting strap is attached to a fastening portion of the gas bag and a deflection device arranged at the wrapping or formed by the wrapping, at which the connecting strap—relative to the condition of the gas bag arrangement as mounted in the vehicle—is deflected in direction of the holding structure. A section of the connecting strap coming from the fastening portion extends up to the deflection device away from the holding structure and at the deflection device again is deflected towards the holding structure.

Claims

1. A gas bag arrangement for a vehicle occupant restraint system of a motor vehicle, comprising

a gas bag package which includes a folded gas bag and a wrapping which at least partly surrounds the folded gas bag;

at least one connecting strap for connecting the gas bag to a holding structure of the motor vehicle, wherein the connecting strap is attached to a fastening portion of the gas bag; and

a deflection device arranged at the wrapping or formed by the wrapping, at which the connecting strap—

relative to the condition of the gas bag arrangement as mounted in the vehicle—

is deflected in direction of the holding structure, wherein

a section of the connecting strap coming from the fastening portion extends up to the deflection device away from the holding structure and at the deflection device again is deflected towards the holding structure.

2. The gas bag arrangement according to claim 1, wherein the section of the connecting strap extends up to the deflection device away from an end of the gas bag package to be turned towards the holding structure and at the deflection device again is deflected towards the end of the gas bag package.

3. The gas bag arrangement according to claim 2, wherein the deflection device has a greater distance to the end of the gas bag package than the fastening portion of the gas bag to which the connecting strap is attached.

4. The gas bag arrangement according to claim 1, wherein the deflection device forms a deflection edge at which the section of the connecting strap is deflected.

5. The gas bag arrangement according to claim 1, wherein the deflection device is formed such that it releases the connecting strap upon deployment of the gas bag.

6. The gas bag arrangement according to claim 1, wherein the deflection device has at least one opening formed in the wrapping, through which the section of the connecting strap is guided.

7. The gas bag arrangement according to claim 6, wherein the section of the connecting strap extends up to the opening within the wrapping and exits from the wrapping through the opening.

8. The gas bag arrangement according to claim 6, wherein the opening is formed oblong.

9. The gas bag arrangement according to claim 6, wherein the wrapping has a weakened portion along which the wrapping tears open upon deployment of the gas bag, wherein a section of the opening overlaps with the weakened portion.

10. The gas bag arrangement according to claim 1, wherein the deflection device includes at least one fastening element which fixes the section of the connecting strap at the wrapping.

11. The gas bag arrangement according to claim 10, wherein the fastening element fixes the section of the connecting strap at an outside of the wrapping.

12. The gas bag arrangement according to claim 10, wherein the fastening element is cohesively fixed at the wrapping.

13. The gas bag arrangement according to claim 1, wherein the fastening portion of the gas bag, to which the connecting strap is attached, is located outside the wrapping.

14. The gas bag arrangement according to claim 1, the wrapping is formed of a flexurally soft material.

15. A method for manufacturing a gas bag arrangement according to claim 1, with the following steps:

manufacturing a gas bag package, which includes a folded gas bag and a wrapping which at least partly surrounds the folded gas bag;

attaching a connecting strap for connecting the gas bag to a holding structure of the motor vehicle to a fastening portion of the gas bag;

arranging a deflection device at the wrapping or forming a deflection device by the wrapping, wherein the connecting strap—

relative to the condition of the gas bag arrangement as mounted in the vehicle—

is deflected at the deflection device in direction of the holding structure; and

arranging a section of the connecting strap coming from the fastening portion such that it extends up to the deflection device away from the holding structure and at the deflection device again is deflected towards the holding structure.