Takata Petri Ag

Petri Ag

Axel Malczyk

Heinz-Dieter Adomeit

Dieter Markfort

Takashi Sakaguchi

Falk Ose

Andreas Sturm

Wolfram Werstat

An airbag module has a housing, a multiple stage gas generator, a gas bag and a gas bag cover. In an inoperative state the gas bag lies in a folded condition next to the gas generator. Only one gas bag layer extends over the generator so that after ignition of the gas generator, the gas bag is drawn successively out from a housing by the gases discharged from the generator. The gas bag cover is formed so that after opening the gas bag cover increasingly greater forces are required to unfold the gas bag from a predetermined time point onwards and so that an outer part of the gas bag only unfolds in the event of the greater forces.

Airbag module with a multistage gas generator

The invention relates to a gas bag for an airbag module wherein the gas bag is folded in the rest position. According to the invention a telescopic folding is provided, as well as a method and a device for folding a gas bag, wherein chaotically folded sections extend around telescopic folds. The folding is conducted so that the gas bag is placed telescopically in folds into the inside of the gas bag step-wise, at least from one side, and is then compressed to form the chaotic folds.

Gas bag for an airbag module, method and device for folding a gas bag

Growing community of inventors

Berlin, Germany

Axel Malczyk