Airbag and airbag module

Patent metadata

Field	Value
Publication number	US-9487176-B2
Application number	US-201414769835-A
Country	US
Kind code	B2
Filing date	Mar 4, 2014
Priority date	Mar 7, 2013
Publication date	Nov 8, 2016
Grant date	Nov 8, 2016

Abstract

An airbag ( 2 ) of an airbag module for a vehicle comprising an airbag shell ( 6 ) including an inserting orifice ( 8 ) for an inflator ( 4 ) has at least one reinforcing layer ( 14 ) which completely covers the inserting orifice ( 8 ).

First claim

The invention claimed is:

1. An airbag for a vehicle comprising an airbag shell ( 6 ) including an inserting orifice ( 8 ) for an inflator ( 4 ) and at least one reinforcing layer ( 14 ) at the inside of the airbag shell ( 6 ) which completely covers the inserting orifice ( 8 ) and wherein aligned fastening orifices ( 26 ) are provided in the airbag shell ( 6 ) and the reinforcing layer ( 14 ).

2. The airbag according to claim 1 , wherein the reinforcing layer ( 14 ) has an approximately trapezoidal cut.

3. The airbag according to claim 1 , wherein the reinforcing layer ( 14 ) is fastened on the peripheral side of the airbag shell ( 6 ), wherein a peripheral portion ( 16 ) of the reinforcing layer ( 14 ) is not fastened to the airbag shell ( 6 ) and is open.

4. The airbag according to claim 3 , wherein the reinforcing layer ( 14 ) is fastened to the airbag shell ( 6 ) on the peripheral side except for the non-fastened peripheral portion ( 16 ) while forming a pouch.

5. The airbag according to claim 3 , wherein the reinforcing layer ( 14 ) is connected to the airbag shell ( 6 ) along an at least substantially U-shaped or W-shaped area of a fastening strip ( 18 ), especially by a seam, in particular wherein the two side legs ( 19 ) of the “U” or “W” extend away from each other to their free ends.

6. The airbag according to claim 5 , wherein the inserting orifice ( 8 ), preferably all orifices in the area of the reinforcing layer ( 14 ), has/have a distance from the non-fastened peripheral portion ( 16 ) which corresponds to at least one third of the distance (A) of the non-fastened peripheral portion ( 16 ) from a portion of the fastening strip ( 18 ) facing the same.

7. The airbag according to claim 6 , wherein a reinforcing strip ( 32 ; 32 . 2 ; 32 . 3 ; 32 . 4 ) is guided closely around the fastening orifice ( 26 ) for connecting the airbag shell ( 6 ) to the reinforcing layer ( 14 ), especially wherein the reinforcing strip ( 32 ; 32 . 4 ) starts from the center piece ( 34 ) of the fastening strip ( 18 ) or forms part of the center piece ( 34 . 4 ).

8. The airbag according to claim 7 , wherein the reinforcing strip ( 32 . 3 ) is adjacent to at least one of the ends ( 20 ) of the fastening strip ( 18 ).

9. The airbag according to claim 1 , wherein the inserting orifice ( 8 ) is configured as a slit, especially a slit forming a tab.

10. The airbag according to claim 1 , wherein the periphery of the reinforcing layer ( 14 ) is spaced apart from the inserting orifice ( 8 ).

11. The airbag according to claim 1 , wherein an igniter orifice ( 24 ) extends through the airbag shell ( 6 ) and the reinforcing layer ( 14 ).

12. The airbag according to claim 11 , wherein a fastening strip ( 18 ) surrounds the igniter orifice ( 24 ) at least once closely and completely, especially wherein a side leg ( 19 ) or a center piece ( 34 ) surrounds the igniter orifice ( 24 ).

13. The airbag according to claim 1 , wherein between the airbag shell ( 6 ) and the reinforcing layer ( 14 ) a protective layer ( 36 ) is provided which has the same orifices as the airbag shell ( 6 ) and in its entirety is tightly connected to the airbag shell ( 6 ).

14. The airbag according to claim 13 , wherein the protective layer ( 36 ) extends beyond the peripheral portion ( 16 ) of the reinforcing layer ( 14 ) not fastened to the airbag shell ( 6 ), but in the other portions exhibits a cut substantially equal to the reinforcing layer ( 14 ).

15. The airbag according to claim 1 , wherein the inserting orifice ( 8 ) is arranged between the side legs ( 19 ) of a fastening strip ( 18 ) or between center legs ( 40 ) of a center piece ( 34 . 4 ).

16. An airbag module comprising an airbag ( 2 ) according to claim 1 and an inflator ( 4 ) including at least one fastening means ( 30 ) which laterally projects from the inflator ( 4 ), wherein the airbag ( 2 ) has a fastening orifice ( 26 ) for the passage of the fastening means ( 30 ) the geometry of which substantially corresponds to that of the cross-section of the fastening means ( 30 ) and is preferably smaller than the cross-section of the fastening means ( 30 ).

Assignees

• Trw Automotive Gmbh

Inventors

• Loos Andreas
• Acker Dominique
• Bogdanovic Stojan

Classifications

• B60R21/217 Primary

  Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together · CPC title

• B60R21/231

  characterised by their shape, construction or spatial configuration · CPC title

• B60R21/23

  Inflatable members (B60R21/18 takes precedence; connection to inflation fluid source retainers B60R21/217) · CPC title

• B60R21/2171 Primary

  specially adapted for elongated cylindrical or bottle-like inflators with a symmetry axis perpendicular to the main direction of bag deployment, e.g. extruded reaction canisters (B60R21/2176 takes precedence) · CPC title