Nihon Plast Co., Ltd.

Tomoko Ninomiya

Aki Yokoyama

Yukihiro Naitou

An airbag device includes an airbag, first and second inflators, a gas-supply mechanism and a release member for connecting between a holding structure and the airbag. Gas generated by the second inflator is supplied into the airbag when the release member is pulled by the airbag while gas generated by the first inflator inflates the airbag. According to the airbag device, a gas amount supplied into an airbag can be switched according to an occupant's seating position without equipping a sensor for measuring a distance between an occupant and the airbag or a control device for computing the gas amount supplied.

Airbag device

An air bagis spread flatly. Along four lines 'R' that extend radially outward, the air bagis sandwiched and held by line part forming units. By using a first press pieces, a portion between the neighboring lines 'R' is pressed toward the gas inlet opening to form a first gathering portion, and form a ear portionalong each line &#x201c;R&#x201d;. Then, each ear portionis pressed by a second press pieceto form a second gathering portionthat is like a bellows. When a gas is introduced into the gas inlet opening, the second gathering portionis quickly expanded and increase of internal pressure of the air bag can be controlled. In the folding process, there is no need of turning the air bagand thus a production device can be made simple in construction.

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Fuji, Japan

Tomoko Ninomiya