US 7,597,348 B2Granted

Automotive airbag device

AssigneeAutoliv Development AB

InventorsMasataka Fukuda, Yuichiro Yoshida, Makoto Higano, Mitsuo Nogami, Taro Shimizu

Life of this patent

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Abstract

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.

Claims9

Dependent claims

An automotive airbag device comprising:

a side impact airbag having an interior formed by joining mutually facing fabric layers,
a gas generator used to inflate the airbag by injecting gas therein, the gas generator having an insertion end which is inserted into and disposed within a gas guide of the airbag configured to direct the flow of gas from the gas generator into the airbag,
the gas guide including a gas guide member having an attachment orifice into which the insertion end of the gas generator is inserted, and also including gas injection nozzles facing the interior of the airbag, and
a convex seam formed by a mutually joined part of the fabric layers, a top of the convex seam disposed in opposition to and facing the gas guide member, wherein
the gas flowing into the airbag from the gas generator, when the airbag is being inflated, causes the gas guide member to come into contact with at least the top of the convex seam.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/581,926Filed 29 Nov 2004
Priority: JP 2003-4093408 Dec 2003
Published: US 2007/0257475 A18 Nov 2007
Granted: 6 Oct 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

B60R 21/233
Characterised by their shape, construction or spatial configuration: comprising a plurality of individual compartments; comprising two or more…
B60R 21/26
Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags: characterised by the inflation…
B60R 2021/161
Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags: characterised by additional…
B60R 2021/23316
Comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other: inner seams, e.g. creating…