Gas generator container and airbag module

Patent metadata

Field	Value
Publication number	US-11066039-B2
Application number	US-201816479656-A
Country	US
Kind code	B2
Filing date	Jan 25, 2018
Priority date	Feb 2, 2017
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

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

The invention claimed is:

1. 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 ) is formed from an expanded metal portion manufactured integrally with the holder bottom part ( 20 ) and/or the holder sidewall part ( 22 ) and delimits the receiving compartment ( 26 ) on the discharge side ( 28 ), in that the filter grid ( 24 ) completely covers the receiving compartment ( 26 ), and wherein flow orifices ( 30 ) of the filter grid ( 24 ) have a maximum flow cross-section ranging from 0.2 mm 2 to 8 mm 2 .

2. The inflator holder ( 14 ) according to claim 1 , wherein the filter grid shows a degree of perforation of at least 25%.

3. The inflator holder ( 14 ) according to claim 1 , wherein the filter grid shows a degree of perforation of at least 30%.

4. The inflator holder ( 14 ) according to claim 1 , wherein the holder sidewall part ( 22 ) completely encompasses the holder bottom part ( 20 ) on the outside.

5. The inflator holder ( 14 ) according to claim 1 , wherein the filter grid ( 24 ) is manufactured integrally with the holder bottom part ( 20 ) and directly fastened on the holder sidewall part ( 22 ) and with the latter forms a pre-assembled unit.

6. The inflator holder ( 14 ) according to claim 1 , wherein the filter grid ( 24 ) is manufactured integrally with the holder bottom part ( 20 ) and fastened on the holder bottom part ( 20 ).

7. The inflator holder ( 14 ) according to claim 1 , wherein the filter grid ( 24 ) extends to the area of the inflator receiving hole ( 18 ).

8. The inflator holder ( 14 ) according to claim 1 , wherein the filter grid ( 24 ) is manufactured by deep-drawing, folding and/or beveling of a flat blank.

9. The inflator holder ( 14 ) according to claim 8 , 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.

10. The inflator holder ( 14 ) according to claim 1 , wherein the filter grid ( 24 ) is connected to one of the holder sidewall part ( 22 ) and the holder bottom part ( 20 ) by welding, folding, screwing, pinning, riveting, adhesive bonding and/or through-joining.

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

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

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

14. An airbag module ( 10 ) comprising an airbag ( 16 ), an inflator ( 12 ) and an inflator holder ( 14 ) according to claim 1 , wherein the inflator ( 12 ) is arranged at least partially in the inflator receiving hole ( 18 ).

15. An airbag module ( 10 ) comprising an airbag ( 16 ), an inflator ( 12 ) and an inflator holder ( 14 ) according to claim 1 , 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 ).

Assignees

• Trw Automotive Gmbh

Inventors

• Issler Bernd
• Schmid Simon
• Burkhardtsmaier Martin

Classifications

• 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

• B60R2021/26011

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

• B60R21/264

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