Flow-guiding device for guiding at least one gas flow for filling an airbag, and airbag module

• US 20030141710A1
• Filed: 01/29/2003
• Published: 07/31/2003
• Est. Priority Date: 02/22/2000
• Status: Abandoned Application

• Current Assignee: Takata - Petri AG (Ningbo Junsheng Investment Group Co., Ltd.)
• Original Assignee: Takata - Petri AG (Ningbo Junsheng Investment Group Co., Ltd.)
• Inventors: Zoller, Thomas, Webert, Thomas, Zahn, Matthias, Rausch, Sonja
• Application Number:
  US10/204,480
• Publication Number:
  US 20030141710A1
• Time in Patent Office: Days
• US Class Current: 280/742
• CPC Class Codes: B60R 2021/2612 Gas guiding means, e.g. ducts
• CPC Class Codes: B60R 21/30 with means to draw ambient air into the flow line and mix such air with the inflation fluid

Abstract

The invention relates to a flow-guiding device for guiding at least one gas flow for filling an airbag of an airbag module. According to the invention, at least one connecting means (32) is provided for feeding an external gas flow originating from an external source to a generator gas flow originating from a gas generator.

Claims

1. A flow-guiding device for guiding at least one gas flow for filling an airbag of an airbag module, characterized by at least one connection means (32) for feeding an external gas flow (EG) originating from an external source to a generator gas flow (G) originating from a gas generator (2).

2. The flow-guiding device as claimed in claim 1, characterized in that the at least one connection means (32) is designed as an intake connection piece, through which the external gas flow (EG) is capable of flowing and which constitutes a connection, through which the external gas flow (EG) is capable of flowing, between a reservoir or the surrounding air.

3. The flow-guiding device as claimed in claim 1 or 2, characterized by a nonreturn valve (40) for the generator gas flow (G) and/or the external gas flow (EG).

4. The flow-guiding device as claimed in claim 3, characterized in that the nonreturn valve (40) is arranged in the intake connection piece (32).

5. The flow-guiding device as claimed in claim 3 or 4, characterized in that the nonreturn valve (40) has elastic sealing lips (39) which allow a throughflow only during the feed of the external gas flow (EG).

6. The flow-guiding device as claimed in claim 5, characterized in that the elastic sealing lips (39) can be connected to the connection means (32).

7. The flow-guiding device as claimed in claim 5, characterized in that the elastic sealing lips (39) are integrally formed on the connection means (32).

8. The flow-guiding device as claimed in at least one of the preceding claims, characterized by sealing means (6, 9) for connection to the gas generator (2) and/or to the diffuser tube (33).

9. The flow-guiding device as claimed in claim 8, characterized in that a sealing means is designed as a labyrinth seal (9).

10. The flow-guiding device as claimed in at least one of the preceding claims, characterized in that it is produced as an essentially T-shaped plastic molding (36).

11. The flow-guiding device as claimed in claim 10, characterized in that the intake connection piece (32) is arranged on the essentially T-shaped plastic molding (36).

12. The flow-guiding device as claimed in at least one of the preceding claims, characterized in that it has two components (36a, 36b) connectable to one another, the components (36a, 36b) being connected to one another in the assembled state at the gas generator (2) and/or the diffuser tube (33).

13. The flow-guiding device as claimed in claim 12, characterized in that the components (36a, 36b) can be held together by means of a clip (5).

14. The flow-guiding device as claimed in claim 13, characterized in that the clip (5) is designed to be lockable.

15. The flow-guiding device as claimed in at least one of claims 13 to 15, characterized in that the intake connection piece (32) is arranged on one of the components (36a, 36b).

16. The flow-guiding device as claimed in at least one of claims 12 to 15, characterized by component sealing means which are arranged where the components (36a, 36b) are in contact with one another when assembled.

17. An airbag module, in particular with a tubular gas generator having a flow-guiding device as claimed in at least one of claims 1 to 16.