Gas bag module

• US 20040113405A1
• Filed: 12/09/2003
• Published: 06/17/2004
• Est. Priority Date: 12/12/2002
• Status: Abandoned Application

• Current Assignee: TRW Automotive Safety Systems GmbH & Co. KG
• Original Assignee: TRW Automotive Safety Systems GmbH & Co. KG
• Inventors: Stricker, Christian, Schneider, Michael
• Application Number:
  US10/731,075
• Publication Number:
  US 20040113405A1
• Time in Patent Office: Days
• US Class Current: 280/736
• CPC Class Codes: B60R 21/05 associated with the steering wheel, steering hand lever or steering column yieldable steering columns B62D1/18
• CPC Class Codes: B60R 21/2037 the module or a major component thereof being yieldably mounted, e.g. for actuating the horn switch or for protecting the driver in a non-deployment situation horn switches integrated in steering wheel covers with tear lines B60R21/21658
• CPC Class Codes: B60R 21/217 Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together
• CPC Class Codes: B60R 21/231 characterised by their shape, construction or spatial configuration
• CPC Class Codes: B60R 21/261 with means other than bag structure to diffuse or guide inflation fluid

Abstract

A gas bag module for a vehicle occupant restraint device includes a gas generator and a diffusor which surrounds the gas generator and has a cup-shaped section. The diffusor cup-shaped section has a filter section consisting of a sintered porous material, through which the gas flows out from the gas generator. The porous material is selected from the group consisting of sintered metal powders, sintered metal fibers and metal foams.

Claims

1. A gas bag module for a vehicle occupant restraint device, said gas bag module comprising a gas generator and a diffusor wherein the diffusor has a cup-shaped section, surrounding said gas generator, and wherein said cup-shaped section has a gas-permeable filter section consisting of a sintered porous material, said porous material being selected from the group consisting of sintered metal powders, sintered metal fibers and metal foams.

2. The gas bag module according to claim 1, in which said filter section is designed such that it acts as a particle filter for gas (G) flowing therethrough.

3. The gas bag module according to claim 1, wherein said filter section consists of sintered metal fibers with a porosity of 85-95%.

4. The gas bag module according to claim 1, wherein said cup-shaped section comprises a side wall and a cover, said side wall being formed from said sintered porous material.

5. The gas bag module according to claim 1, wherein that said cup-shaped section consists of said sintered porous material.

6. The gas bag module according to claim 1, in which said cup-shaped section is designed as a deformation element.

7. The gas bag module according to claim 1, in which said gas generator is mounted so as to be able to oscillate.

8. The gas bag module according to claim 1, wherein that said cup-shaped section has a rim with a laterally projecting ring-shaped flange provided thereon, which likewise consists of said sintered porous material, at least one fastening element being embedded in said flange and being connected metallurgically with said sintered porous material.

9. The gas bag module according to claim 1, wherein said gas generator is realized without any filter within said gas generator.