US 8,770,620 B2Granted

Airbag apparatus

AssigneeToyoda Gosei Co., Ltd.

InventorsMasashi Hotta, Yuji Sato, Kensaku Honda, Hitoshi Kawabe, Hiroshi Kato

Life of this patent

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Abstract

Inside of an airbag is partitioned by a partitioning member into an upstream inflation portion, which is inflated by a supply of gas, and a downstream inflation portion, which is inflated by inflow of the gas from the upstream inflation portion. The partitioning member includes a wide portion where an external force to be applied accompanying an occupant restraint by the airbag becomes largest. In the partitioning member, slits are formed at portions other than the wide portion. The slits cause the gas to flow into the downstream inflation portion from the upstream inflation portion upon the inflation of the airbag. The slits are opened by the force to increase the flow rate of the gas into the downstream inflation portion from the upstream inflation portion during the occupant restraint by the airbag compared to the gas flow rate before the occupant restraint by the airbag.

Claims7

Dependent claims

An airbag apparatus comprising an airbag, wherein the airbag includes:

an upstream inflation portion and a downstream inflation portion, which are defined inside the airbag, the upstream inflation portion being located upstream of the downstream inflation portion, wherein the upstream inflation portion is inflated by a supply of inflation gas, and the downstream inflation portion is inflated by an inflow of the inflation gas from the upstream inflation portion;
and
a gas inlet portion that causes the inflation gas to flow from the upstream inflation portion to the downstream inflation portion upon the inflation of the airbag, wherein, when the airbag restrains an occupant, the gas inlet portion increases a flow rate of the inflation gas from the upstream inflation portion to the downstream inflation portion in accordance with an external force applied to the airbag accompanying the restraint of the occupant compared to a flow rate of the inflation gas before the restraint of the occupant by the airbag, and the gas inlet portion is provided at a portion other than a portion where the external force becomes largest in the airbag.

Dependencies are inferred from the claim text.

Facts

Application: 14/010,626Filed 27 Aug 2013
Priority: JP 2012-21443227 Sep 2012
Published: US 2014/0084571 A127 Mar 2014
Granted: 8 Jul 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

B60R 21/233
Characterised by their shape, construction or spatial configuration: comprising a plurality of individual compartments; comprising two or more…
B60R 21/23138
Characterised by their shape, construction or spatial configuration: specially adapted for side protection
B60R 21/239
Inflatable members: characterised by their venting means
B60R
Vehicle fittings and parts

Family

US 2014/0084571 A1Pre-grant publication · published 27 Mar 2014
US 8,770,620 B2This patent

From the US filing history. Foreign family members aren’t listed.

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