Gas generator container and airbag module

Patent metadata

Field	Value
Publication number	US-2021039584-A1
Application number	US-201816479656-A
Country	US
Kind code	A1
Filing date	Jan 25, 2018
Priority date	Feb 2, 2017
Publication date	Feb 11, 2021
Grant date	—

Abstract

The invention relates to an inflator holder ( 14 ) for an airbag module ( 10 ) comprising a holder bottom part ( 20 ) in which an inflator receiving hole ( 18 ) is formed and comprising a holder sidewall part ( 22 ) which delimits, together with the holder bottom part ( 20 ), a receiving compartment ( 26 ) for an inflator ( 12 ) open on a discharge side ( 28 ) opposed to the holder bottom part ( 20 ). The inflator holder ( 14 ) includes a filter grid ( 24 ) for exhausting gas fastened on the inflator holder ( 14 ) which filter grid at least partially delimits the receiving compartment ( 26 ) on the discharge side ( 28 ). In addition, the invention relates to an airbag module ( 10 ) comprising an airbag ( 16 ), an inflator ( 12 ) and said inflator holder ( 14 ).

First claim

1 - 15 . (canceled)

16 . An inflator holder ( 14 ) for an airbag module ( 10 ), comprising a holder bottom part ( 20 ) in which an inflator receiving hole ( 18 ) is formed and comprising a holder sidewall part ( 22 ) which, together with the holder bottom part ( 20 ), delimits a receiving compartment ( 26 ) for an inflator ( 12 ) open on a discharge side ( 28 ) opposed to the holder bottom part ( 20 ) and is connected to the holder bottom part ( 20 ), wherein the inflator holder ( 14 ) comprises a filter grid ( 24 ) for exhausting gas fastened on part of the inflator holder ( 14 ), wherein the filter grid ( 24 ) delimits the receiving compartment ( 26 ) on the discharge side ( 28 ), in that the filter grid ( 24 ) completely covers the receiving compartment ( 26 ), and wherein the flow orifices ( 30 ) of the filter grid ( 24 ) have a maximum flow cross-section ranging from 0.2 mm 2 to 8 mm 2 .

17 . The inflator holder ( 14 ) according to claim 16 , wherein the filter grid shows a degree of perforation of at least 25%.

18 . The inflator holder ( 14 ) according to claim 16 , wherein the filter grid shows a degree of perforation of at least 30%.

19 . The inflator holder ( 14 ) according to claim 16 , wherein the holder sidewall part ( 22 ) completely encompasses the holder bottom part ( 20 ) on the outside.

20 . The inflator holder ( 14 ) according to claim 16 , wherein the filter grid ( 24 ) is directly fastened on the holder sidewall part ( 22 ) and with the latter forms a pre-assembled unit.

21 . The inflator holder ( 14 ) according to claim 16 , wherein the filter grid ( 24 ) is fastened on the holder bottom part ( 20 ).

22 . The inflator holder ( 14 ) according to claim 16 , wherein the filter grid ( 24 ) is fastened in the area of the inflator receiving hole ( 18 ).

23 . The inflator holder ( 14 ) according to claim 16 , wherein the filter grid ( 24 ) is made from metal, preferably in that the filter grid is made from a woven metal grid, an expanded metal or a perforated sheet.

24 . The inflator holder ( 14 ) according to claim 16 , wherein the filter grid ( 24 ) is manufactured by deep-drawing, folding and/or beveling of a flat blank.

25 . The inflator holder ( 14 ) according to claim 24 , wherein the flat blank is pot-shaped and comprises a laterally projecting edge which abuts on the lower side of the holder bottom part to be fastened thereto.

26 . The inflator holder ( 14 ) according to claim 16 , wherein the filter grid ( 24 ) is connected to the holder sidewall part ( 22 ) and/or the holder bottom part ( 20 ) by welding, folding, screwing, pinning, riveting, adhesive bonding and/or through-joining.

27 . The inflator holder ( 14 ) according to claim 16 , wherein the filter grid ( 24 ) is manufactured integrally with the holder bottom part ( 20 ) and/or the holder sidewall part ( 22 ).

28 . The inflator holder ( 14 ) according to claim 16 , wherein the filter grid ( 24 ) is an expanded metal portion manufactured integrally with the holder bottom part ( 20 ) and/or the holder sidewall part.

29 . An airbag module ( 10 ) comprising an airbag ( 16 ), an inflator ( 12 ) and an inflator holder ( 14 ) according to claim 16 , wherein the inflator ( 12 ) is arranged at least partially in the inflator receiving hole ( 18 ).

30 . An airbag module ( 10 ) comprising an airbag ( 16 ), an inflator ( 12 ) and an inflator holder ( 14 ) according to claim 16 , wherein the inflator ( 12 ) is arranged at least partially in the inflator receiving hole ( 18 ) and is fastened at least partially on the edge of the inflator receiving hole ( 18 ).

31 . The airbag module ( 10 ) according to claim 26 , wherein the inflator ( 12 ) is a two-stage inflator ( 12 ).

32 . The airbag module ( 10 ) according to claim 26 , wherein the filter grid ( 24 ) spans all gas flow paths between the inflator ( 12 ) and the airbag ( 16 ).

33 . The airbag module ( 10 ) according to claim 26 , wherein the airbag module ( 10 ) is a passenger airbag module.

34 . The airbag module ( 10 ) according to claim 26 , wherein the airbag ( 16 ), the inflator ( 12 ) and the inflator holder ( 14 ) are arranged in a joint housing.

Assignees

• Trw Automotive Gmbh

Inventors

• Issler Bernd
• Schmid Simon
• Burkhardtsmaier Martin

Classifications

• B60R2021/26011

  using a filter through which the inflation gas passes · CPC title

• B60R21/261 Primary

  with means other than bag structure to diffuse or guide inflation fluid · CPC title

• B60R21/217

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

• B60R21/264

  using instantaneous generation of gas, e.g. pyrotechnic (B60R21/268 takes precedence) · CPC title