Trw Automotive Safety Systems Gmbh

Zf Automotive Safety Germany Gmbh

Stefan Hepp

Guido Hirzmann

Stefan Bachmann

Dieter Rumpf

Stefan Sapountzis

Klaus Freudenberger

Timm Herold

Steffen Rothmeier

Michael Kunkel

A method for folding an airbag includes folding the airbag into an elongate state at least partially by roll-folding. The method also includes inserting a gas generator and/or an airbag-retaining metal sheet into the airbag. The gas generator and/or the airbag-retaining metal sheet is/are located in the central third of the airbag folded in elongate shape so that two end portions of the airbag project from the gas generator and/or from the airbag-retaining metal sheet. The method also includes guiding the airbag end portions around the outer circumference of the gas generator and/or of the airbag-retaining metal sheet in opposite directions toward each other up to a folding zone in which the end portions of the airbag at least almost contact each other. The method further includes folding over the end portions of the airbag from the folding zone outwards and guiding the airbag end portions in the opposite direction around the outer circumference of the gas generator and/or of the airbag-retaining metal sheet and around internal parts of the airbag end portions located thereon for forming external parts.

Method for folding an airbag, and airbag module

A method for folding an airbag () provides that the airbag () is first folded in a zigzag manner, that a gas generator () and/or an airbag-retaining metal sheet is/are placed in the airbag (), whereupon end portions of the airbag extend around the outer circumference of the gas generator () and/or of the airbag-retaining metal sheet toward each other in opposite directions up to a folding zone () from where the end portions are folded over outwards and are laid down in the opposite direction. Also disclosed is a corresponding airbag module.

The invention relates to an airbag package () for an occupant restraint system of an automotive vehicle comprising a folded airbag () and clearances formed between the material of the airbag, wherein the airbag package () has a real package volume Vcomposed of the airbag volume Vof the airbag () and the clearance volume Vof the clearances. The invention excels by the fact that the ratio V/Vbetween the package volume Vand the airbag volume Vis at most 3.2. The invention further relates to an occupant restraint system comprising such airbag package and to a method of manufacturing an airbag package.

Airbag package for an occupant restraining system of a motor vehicle, occupant restraining system, and method for producing such an airbag package

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Glattbach, Germany

Stefan Hepp