Airbag for a vehicle occupant restraint system

Patent metadata

Field	Value
Publication number	US-2015137488-A1
Application number	US-201314395834-A
Country	US
Kind code	A1
Filing date	Apr 23, 2013
Priority date	Apr 25, 2012
Publication date	May 21, 2015
Grant date	—

Abstract

An airbag ( 20 ) for a vehicle occupant restraint system comprises a first fabric layer ( 10 ) and an opposed second fabric layer ( 12 ) each being formed of a composite fabric of wefts and warps and delimiting a chamber ( 14 ) adapted to be filled with gas. Plural weaving threads ( 16 ) are provided which exit the composite fabric of a fabric layer ( 10, 12 ) in the direction of the other fabric layer ( 12, 10 ) and are freely floating in the chamber ( 14 ) before they enter into the composite fabric of the other fabric layer ( 12, 10 ). The weaving threads ( 16 ) are movable in their longitudinal direction relative to the inlet and outlet points.

First claim

1 - 7 . (canceled)

8 . An airbag ( 20 ) for a vehicle occupant restraint system, comprising:
a first fabric layer ( 10 ) and an opposed second fabric layer ( 12 ), each being formed of a composite fabric of wefts and warps and delimiting a chamber ( 14 ) adapted to be filled with gas, wherein plural weaving threads ( 16 ) are provided which exit the composite fabric of a fabric layer ( 10 , 12 ) in the direction of the other fabric layer ( 12 , 10 ) at plural of inlet and outlet points and are freely floating in the chamber ( 14 ) before they enter into the composite fabric of the other fabric layer ( 12 , 10 ), and wherein the weaving threads ( 16 ) are movable in their longitudinal direction relative to the inlet and outlet points.

9 . The airbag ( 20 ) according to claim 8 , wherein the weaving threads ( 16 ) are guided through simple cross loops ( 18 ) of the respective composite fabric at the inlet and outlet points.

10 . The airbag ( 20 ) according to claim 9 , wherein the cross loops ( 18 ) of the first fabric layer ( 10 ) are arranged offset against the cross loops ( 18 ) of the second fabric layer ( 12 ) related to the longitudinal direction of the weaving threads ( 16 ).

11 . The airbag ( 20 ) according claim 8 , wherein the ends of the weaving threads ( 16 ) are arranged with tensile strength at one of the fabric layers ( 10 , 12 ) or at a border area in which the fabric layers ( 10 , 12 ) are interconnected.

12 . The airbag ( 20 ) according to claim 8 , wherein at least part of the weaving threads ( 16 ) is tightly arranged at one end on an airbag extension ( 24 ).

13 . The airbag ( 20 ) according to claim 12 , wherein the weaving threads ( 16 ) are arranged at their other end in a central area of the airbag ( 20 ).

14 . The airbag ( 20 ) according to claim 1 , wherein the airbag ( 20 ) is a one-piece woven airbag ( 20 ) in which the two fabric layers ( 10 , 12 ) are interwoven in one piece in a border area and delimit a chamber ( 14 ) adapted to be filled with

Assignees

• Trw Automotive Gmbh

Inventors

• Fischer Anton

Classifications

• D03D13/00

  Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft · CPC title

• D03D1/02

  Inflatable articles · CPC title

• D03D11/02

  Fabrics formed with pockets, tubes, loops, folds, tucks or flaps (fabrics consisting of a single tube D03D3/02) · CPC title

• B60R21/2334

  Expansion control features · CPC title

• B60R2021/23571

  characterised by connections between panels · CPC title