Gas bag restraint device

• US 20040108692A1
• Filed: 12/03/2003
• Published: 06/10/2004
• Est. Priority Date: 12/05/2002
• Status: Abandoned Application

• Current Assignee: TRW Automotive Safety Systems GmbH (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Original Assignee: TRW Automotive Safety Systems GmbH (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Inventors: Schneider, Michael, Heil, Andreas
• Application Number:
  US10/727,002
• Publication Number:
  US 20040108692A1
• Time in Patent Office: Days
• US Class Current: 280/728.3
• CPC Class Codes: B60R 21/203 in steering wheels or steering columns
• CPC Class Codes: B60R 21/231 characterised by their shape, construction or spatial configuration

Abstract

A gas bag restraint device comprises a gas bag module which has a gas bag and a covering cap tearing open on inflation of the gas bag. The covering cap covers a ring-shaped outlet opening for the gas bag and has a central section, which in an opened state of the gas bag module is surrounded by the outlet opening. The central section is delimited by a ring-shaped, peripherally closed tear line of radially outwardly adjoining sections of the covering cap, the tear line adjoining an inner edge of the outlet opening.

Claims

1. A gas bag restraint device, comprising

a gas bag module which has a gas bag (3) and a covering cap (9) tearing open on inflation of said gas bag (3),

said covering cap (9) covering a ring-shaped outlet opening (18) for said gas bag (3) and having a central section (46), which in an opened state of said gas bag module is surrounded by said outlet opening (18),

characterized in that said central section (46) is delimited by a ring-shaped, peripherally closed tear line (48) of radially outwardly adjoining sections (44) of said covering cap (9), said tear line adjoining an inner edge of said outlet opening (18).

2. The gas bag restraint device according to claim 1, characterized in that said tear line (48) defines said inner edge of said outlet opening (18).

3. The gas bag restraint device according to claim 1, characterized in that said central section (46) is constructed so as to be rigid.

4. The gas bag restraint device according to claim 1, characterized in that said central section (46) is at least partially covered externally by a separate plaque piece (60).

5. The gas bag restraint device according to claim 4, characterized in that said tear line (48) immediately adjoins an outer edge (66) of said plaque piece (60).

6. The gas bag restraint device according to claim 4, characterized in that said plaque piece (60) fastens said central section (46) and prevents it from a free movement as said covering cap (9) is opening.

7. The gas bag restraint device according to claim 6, characterized in that said plaque piece (60) has a depression (80) at its rear side, into which a bead-like extension (70) of said central section (46) projects.

8. The gas bag restraint device according to claim 6, characterized in that said central section (46) has a mounting opening (62) for said plaque piece (60) and can be placed from above onto said plaque piece (60) such that an inner edge of said central section (46) snaps in place underneath a laterally projecting edge (66) of said plaque piece (60).

9. The gas bag restraint device according to claim 4, characterized in that said covering cap (9) adjoins said plaque piece (60) externally in a substantially flush manner.