Knee air bag module

• US 20080265549A1
• Filed: 04/18/2008
• Published: 10/30/2008
• Est. Priority Date: 10/20/2005
• Status: Active Grant

• Current Assignee: Joyson Safety Systems Germany GmbH (Ningbo Junsheng Investment Group Co., Ltd.)
• Original Assignee: Takata-Petri AG
• Inventors: Kampfmann, Wolfgang, Terlunen, Andreas, Blattner, Joachim
• Granted Patent: US 7,669,892 B2
• Time in Patent Office: Days
• US Class Current: 280/728.2
• CPC Class Codes: B60R 2021/23169 specially adapted for knee protection
• CPC Class Codes: B60R 21/2171 specially adapted for elongated cylindrical or bottle-like inflators with a symmetry axis perpendicular to the main direction of bag deployment, e.g. extruded reaction canisters B60R21/2176 takes precedence

Abstract

One embodiment of the invention relates to an air bag module, in particular for a knee air bag. The air bag module includes an air bag housing, a air bag cushion, a tubular gas generator, a air bag cushion holding device, and a gas guiding device, to which the tubular gas generator is fastened. The gas guiding device is integrally formed with the air bag cushion holding device.

Claims

1. A knee air bag comprising:

an air bag housing;

an air bag cushion;

a tubular gas generator;

an air bag cushion holding device; and

a gas guiding device, to which the tubular gas generator is fastened;

wherein;

the gas guiding device is integrally formed with the air bag cushion holding device.

2. The air bag module as claimed in claim 1, wherein the air bag cushion holding device has a holding plate for fastening the air bag cushion;

and the air bag cushion holding device has a section that is arched in a dome-like manner as a gas guiding device.

3. The air bag module as claimed in claim 1, wherein the gas guiding device protrudes to the outside from the holding plate.

4. The air bag module as claimed in claim 2, wherein the holding plate is at least approximately rectangular, and in that the gas guiding device has at least approximately a square cross section.

5. The air bag module as claimed in claim 1, wherein the air bag cushion holding device is configured as a deep drawn part.

6. The air bag module as claimed in claim 1, wherein:

the tubular gas generator has the gas discharge openings at one end;

the tubular gas generator proximate to the gas discharge opening is fastened to the gas guiding device; and

the end of the tubular gas generator opposite of the gas discharge opening is mounted in a clip that is fastened to the air bag housing.