Autoliv Development Ab

Masataka Fukuda

Makoto Higano

Takayuki Makioka

Mitsuo Nogami

Yuichiro Yoshida

Taro Shimizu

The present invention provides a side curtain air bag facilitating the control of tension with the air bag. The side curtain air bag includes chambers expanded by gas supplied from a gas generator, and expands and develops into a curtain shape along a side part of a vehicle so as to protect vehicle occupants. The side curtain air bag includes primary chambers which expand to form the side curtain air bag, and a secondary chamber which expands after the primary chambers to apply additional tension across the expanded side curtain air bag. The secondary chamber includes an opening communicating with the primary chamber.

Side curtain air bag

The present invention provides a side curtain air bag facilitating the control of tension with the airbag. The side curtain air bag includes chambers expanded by gas supplied from a gas generator, and expands and develops into a curtain shape along a side part of a vehicle so as to protect vehicle occupants. The side curtain air bag includes primary chambers which expand to form the side curtain air bag, and a secondary chamber which expands after the primary chambers to apply additional tension across the expanded side curtain air bag. The secondary chamber includes an opening communicating with the primary chamber.

An airbag is formed from fabric layers joined at a seam, and gas generator inflates the airbag by means of gas expelled from the gas generator's insertion end which has been inserted into the airbag. A gas guide is formed in the airbag in order to direct gas from the gas generator into the airbag and includes a pouch-shaped gas guide member in which are formed gas injection nozzles and an attachment orifice. The insertion end of the gas generator is inserted into the attachment orifice with the gas injection nozzles facing an interior of the airbag. A convex-shaped seam is included where the fabric layers are joined, and is disposed in opposition to the gas guide member. The gas guide member comes into contact with the convex-shaped seam as a result of the pressure of the flow of gas from the gas generator through the gas guide member.

Growing community of inventors

Ibaraki, Japan

Masataka Fukuda