Airbag apparatus
AssigneeHonda Motor Co., Ltd.
InventorsTakeshi Kai, Takashi Aoki, Kazuhiro Onda, Rei Sakamoto, Nobuko Hashikawa
Life of this patent
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Abstract
An airbag apparatus comprising an airbag that expands between a vehicle occupant and a side wall of a vehicle body. The airbag is divided into a plurality of expanding chambers that are connected by a plurality of gas flow channels. Among the expanding chambers, the cross-sectional area of the gas flow channel leading to the expanding chamber that expands first is the largest, the cross-sectional area of the gas flow channel leading to the expanding chamber that expands last is the smallest, and the expanding chambers expand in stages.
Claims10
An airbag apparatus comprising:
- an inflator for discharging gas;
- and
- an airbag that is caused to expand by being filled with the gas, wherein:
- an interior of the airbag is divided into a plurality of expanding chambers including first, second, and third expanding chambers;
- the airbag has a plurality of flow channels formed therein for guiding gas to the expanding chambers, including a first flow channel for guiding gas from the inflator to the first expanding chamber, a second flow channel for guiding gas from the inflator to the second expanding chamber, a third flow channel for guiding gas from the second expanding chamber to the third expanding chamber, and a fourth flow channel for guiding gas from the first expanding chamber to the third expanding chamber;
- and
- a cross-sectional area of each of the gas flow channels is different so that the expanding chambers are caused to expand in stages at different times.
An airbag apparatus comprising:
- an inflator for discharging gas, wherein the inflator is mounted between base end parts of a vehicle body-side base cloth and a dividing base cloth;
- and
- an airbag that is filled with the gas and is thereby caused to expand between a side wall of a vehicle body and a side part of a vehicle occupant region that extends from a lumbar region to a shoulder region,
- wherein:
- the airbag is divided into a plurality of expanding chambers,
- the airbag comprises a pouch composed of the vehicle body-side base cloth and a vehicle occupant-side base cloth, and the dividing base cloth for dividing an interior of the pouch into said plurality of expanding chambers,
- the airbag has a first expanding chamber and a second expanding chamber that are formed by the vehicle body-side base cloth and the dividing base cloth, and a third expanding chamber formed by the vehicle occupant-side base cloth and the dividing base cloth,
- the first expanding chamber, second expanding chamber, and third expanding chamber are caused to expand in the stated order in stages by the gas from the inflator;
- the expanding chambers are connected by gas flow channels, and the airbag has a first flow channel for guiding gas from the inflator to the first expanding chamber, a second flow channel for guiding gas from the inflator to the second expanding chamber, a third flow channel for guiding gas from the second expanding chamber to the third expanding chamber, and a fourth flow channel for guiding gas from the first expanding chamber to the third expanding chamber;
- and
- a cross-sectional area of the gas flow channel of the expanding chamber that expands first among the expanding chambers is the largest, and the cross-sectional areas of the gas flow channels of the expanding chamber that expands last are the smallest.
Dependencies are inferred from the claim text.