Airbag device for vehicles
First Claim
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1. An airbag device for a vehicle, comprising:
- an airbag which can be inflated to restrain an occupant of the vehicle against the impact of a collision;
an inflator for generating gas to inflate the airbag; and
a guide passage provided between the inflator and the airbag for guiding the gas into the airbag, the guide passage having an inlet opening which faces the inflator and an outlet opening which faces an interior of the airbag, the guide passage extending into the interior of the airbag such that the outlet of the guide passage is disposed in the interior of the airbag,wherein the airbag has at least one opening formed therein to provide fluid communication between the interior of the airbag and an exterior of the airbag, the at least one opening being disposed near the guide passage such that air is drawn into the airbag via the at least one opening by gas flowing out of the guide passage outlet opening.
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Abstract
An airbag device for a vehicle includes an airbag that can be inflated to restrain an occupant of the vehicle against the impact of a collision, an inflator for generating gas to inflate the airbag, and a guide passage provided between the inflator and the airbag for guiding the gas into the airbag. The airbag has at least one opening formed therein to provide a fluid communication between the interior and exterior of the airbag, the opening being disposed near the guide passage to perform an aspiratory function efficiently.
37 Citations
26 Claims
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1. An airbag device for a vehicle, comprising:
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an airbag which can be inflated to restrain an occupant of the vehicle against the impact of a collision; an inflator for generating gas to inflate the airbag; and a guide passage provided between the inflator and the airbag for guiding the gas into the airbag, the guide passage having an inlet opening which faces the inflator and an outlet opening which faces an interior of the airbag, the guide passage extending into the interior of the airbag such that the outlet of the guide passage is disposed in the interior of the airbag, wherein the airbag has at least one opening formed therein to provide fluid communication between the interior of the airbag and an exterior of the airbag, the at least one opening being disposed near the guide passage such that air is drawn into the airbag via the at least one opening by gas flowing out of the guide passage outlet opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An airbag device for a vehicle, comprising:
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an airbag which can be inflated to restrain an occupant of the vehicle against the impact of a collision; an inflator for generating gas to inflate the airbag; and a guide passage provided between the inflator and the airbag for guiding the gas into the airbag, wherein the airbag has at least one opening formed therein to provide a fluid communication between an interior and an exterior of the airbag, the at least one opening being disposed near the guide passage, wherein the guide passage has a flow control portion for rectifying flow of the gas generated by the inflator and directing the gas toward the airbag, and a branch passage is provided downstream of, and branched off from, the flow control portion for allowing the gas to escape from the airbag, and the guide passage is formed by a first bag into which the gas is directly supplied from the inflator, the flow control portion is formed on an end of the first bag opposite the inflator, wherein the airbag comprises a second bag into which the gas is supplied through the flow control portion of the first bag, and wherein the branch passage is provided between the first bag and the second bag and includes an on-off valve operable to discharge the gas from the airbag throuah the branch passage, wherein the branch passage and the on-off valve are formed by and between a first communicating hole part projecting from the first bag into the second bag and forming the flow control portion and a second communicating hole part projecting from the second bag into an internal space of the second bag, the first communicating hole part and the second communicating hole part being overlapped with each other so that a gap can be formed between the first and second communicating hole parts. - View Dependent Claims (24, 25, 26)
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Specification