Gas bag module

• US 6,536,801 B2
• Filed: 05/18/2001
• Issued: 03/25/2003
• Est. Priority Date: 05/19/2000
• Status: Expired due to Fees

• Current Assignee: TRW Automotive Safety Systems GmbH & Co. KG
• Original Assignee: TRW Automotive Safety Systems GmbH & Co. KG
• Inventors: Frisch, Ralph
• Primary Examiner(s): Dickson, Paul N.
• Assistant Examiner(s): Ilan, Ruth
• Application Number:
  US09/861,256
• Publication Number:
  US 20010042979A1
• Time in Patent Office: 676 Days
• Field of Search: 280/731, 280/743.1, 280/728.3, 280/728.2
• US Class Current: 280/743.1
• CPC Class Codes: B60R 2021/21543 with emblems
• CPC Class Codes: B60R 21/2165 characterised by a tear line for defining a deployment opening
• CPC Class Codes: B60R 21/21656 Steering wheel covers or similar cup-shaped covers
• 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 21/233 comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other B60R21/232 takes precedence
• CPC Class Codes: B60R 21/2342 Tear seams

Abstract

A gas bag module has a gas bag with a gas bag wall. The gas bag wall has a front wall which faces an occupant to be restrained and has a center section, and a rear wall with an inflation opening to connect to a gas generator. A fastener fastens the center section to the module and prevents the center section from a free movement so that a depression is formed by the center section. A module covering has an annular, predetermined outlet opening which surrounds the fastening. The module covering has a holding section encircled by the outlet opening. An emblem adjoins the holding section. The emblem is fastened to the module by the fastener which fastens the center section of the wall to the module.

Claims

1. A gas bag module comprising:

a gas bag with a gas bag wall, the latter including a front wall which faces an occupant to be restrained, the front wall having a center section, the gas bag including a rear wall with an inflation opening for a gas generator,

a fastener fastening said center section to said module, said fastener in a fully inflated state of said gas bag, restraining said center section and, preventing said center section from moving away from said module, so that, upon inflation of said gas bag, a depression is formed by said center section,

a module covering opened upon inflation of said gas bag, said module covering having an annular, predetermined outlet opening which surrounds said fastener, said module covering having a holding section encircled by said outlet opening, said holding section overlying said center section,

an emblem adjoining said holding section, and being visible from outside the module and configured as a separate part, the emblem being fastened to said module by said fastener over said holding section and said center section,

said center section of said gas bag being clamped by said emblem and said fastener to press said holding section and said center section into engagement with each other.

2. The gas bag module according to claim 1, further comprising a gas generator and wherein a gas bag retainer is provided in said gas bag module, said holding section being fastened to said retainer and wherein said gas generator at least partly protrudes into said retainer.

3. The gas bag module according to claim 2, wherein said center section is clamped immediately between said holding section of said cover and said retainer.

4. The gas bag module according to claim 2, wherein said module has a module housing and wherein said retainer is fastened on a rear side to one of said gas generator and said module housing.

5. The gas bag module according to claim 1, wherein flaps are provided which adjoin each other and are formed in one piece on said module covering, said annular outlet opening being closed by said flaps.

6. The gas bag module according to claim 5, wherein said flaps are formed on at least one of an inner and outer periphery of said annular outlet opening.

7. The gas bag module according to claim 1, wherein said fastener of said center section is designed to prevent part of said center section of said gas bag from emerging from said gas bag module.

8. The gas bag module according to claim 7, wherein said fastener of said center section comprises a gas bag holding plate located outside said gas bag.

9. The gas bag module according to claim 8, wherein said gas bag holding plate is embedded in said module covering.

10. The gas bag module according to claim 8, wherein said emblem, configured as a separate part, is connected with said gas bag holding plate.

11. The gas bag module according to claim 1, wherein said front wall has a ring section with an elliptical outer edge.

12. The gas bag module according to claim 1, wherein, said depression is defined by an inner gas bag wall which consists of at least a forward and a rearward wall part, said forward wall part being cut in an annular shape with an inner edge connected with an inner edge of said front wall, said inner edges defining an opening to form said center section, said rearward wall part being connected with an outer edge of said forward wall part, and said fastener engaging on said rearward wall part.

13. The gas bag module according to claim 1, wherein a screw is formed on said emblem which defines said fastener for said holding section and said center section.