Nihon Plast Co., Ltd.

Honda Motor Co., Ltd.

Ryuji Sagisaka

Satoshi Yamada

Makoto Nagai

Masatoshi Ishigaki

Kouitirou Uezono

Akihiro Barasawa

An airbag and an airbag device, which are capable of readily improving expansion characteristics of the airbag and reducing manufacturing cost, are provided. An airbagfor occupant at passenger's seat includes a first bagand a second bagwhich is provided inside of the first bag. An outside top face portionof the first bagand an inside top face portionof the second bagare brought into a sheet-like intimate contact with each other, and are detachably jointed at the jointing portion. The jointing portionis comprised of a breakable seam line. Gas is supplied into the second bagto thereby expand the first bag, and is supplied into the first bagvia a gas distributing portionto thereby expand the first bag. In a case where an occupant exists at a predetermined position, the jointing portionbreaks away, and the first bagthen expands to its maximum. In an OOP state in which the occupant exists in the proximity of the airbag device, a head part of the occupant holds the outside top face portionand disallows breakage of the jointing portion, so that expansion of the first bagto the occupant side can be restrained and the occupant can be protected with an appropriate force.

Air bag and air bag device

An airbag apparatus comprised of a cover for covering an expanding side of an airbag and forming an opening for the airbag. The cover is comprised of a door portion disposed at the expanding side of the airbag, a surrounding portion surrounding the door portion, a tear portion defining the door portion and tearing due to an expansion force of the airbag, an installation portion protruding from the surrounding portion adjacent to the tear portion toward an opposite side of the expanding side, and a hinge portion connecting the door portion and the surrounding portion located outside of the installation portion.

Airbag apparatus

Growing community of inventors

Shizuoka-ken, Japan

Ryuji Sagisaka