Air bag system
First Claim
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1. An air bag system, comprising:
- an inflator serving as a gas generator;
an air bag which is stored along an A-pillar and a roof side rail in a folded state in a portion of a vehicle and is adapted to be inflated into a curtain along a side wall of a passenger compartment of the vehicle by gas supplied from the inflator to protect at least one vehicle occupant; and
a diffuser serving to guide the gas from the inflator into the air bag, wherein a preliminary inflatable portion is formed in a gas supply port of the air bag, the preliminary inflatable portion being disposed in a longitudinally middle portion of the air bag and a gas distribution portion is formed in an end of the diffuser and is arranged within the preliminary inflatable portion, the gas distribution portion of the diffuser including a plurality of gas feed holes in a longitudinal direction of the vehicle, the gas feed holes distributing gas in at least two different directions.
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Abstract
An air bag system is provided which includes an inflator serving as a gas generator, an air bag which is stored in a folded state in a certain portion of a vehicle and is adapted to be inflated by the gas supplied from the inflator to protect a vehicle occupant or occupants, and a diffuser serving to guide gas from the inflator into the air bag. In the air bag system, a preliminary inflatable portion is formed in a gas supply port of the air bag and a gas distribution portion formed in the end of the diffuser is arranged within the preliminary inflatable portion.
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Citations
11 Claims
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1. An air bag system, comprising:
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an inflator serving as a gas generator;
an air bag which is stored along an A-pillar and a roof side rail in a folded state in a portion of a vehicle and is adapted to be inflated into a curtain along a side wall of a passenger compartment of the vehicle by gas supplied from the inflator to protect at least one vehicle occupant; and
a diffuser serving to guide the gas from the inflator into the air bag, wherein a preliminary inflatable portion is formed in a gas supply port of the air bag, the preliminary inflatable portion being disposed in a longitudinally middle portion of the air bag and a gas distribution portion is formed in an end of the diffuser and is arranged within the preliminary inflatable portion, the gas distribution portion of the diffuser including a plurality of gas feed holes in a longitudinal direction of the vehicle, the gas feed holes distributing gas in at least two different directions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
the gas distribution portion of the diffuser is disposed substantially in a center of a width of the preliminary inflatable portion. -
3. The air bag system according to claim 1, wherein
the preliminary inflatable portion is stored in an unfolded state in the vehicle. -
4. The air bag system according to claim 3, wherein
the gas distribution portion of the diffuser is disposed substantially in a center of a width of the preliminary inflatable portion. -
5. The air bag system according to claim 1, wherein
the preliminary inflatable portion is adapted to be inflated into a substantially cylindrical shape. -
6. The air bag system according to claim 1, wherein
a width of the preliminary inflatable portion is substantially equal to a width of a gas passage serving to guide gas from the preliminary inflatable portion to an inflatable portion of the air bag. -
7. The air bag system according to claim 1, wherein
the gas distribution portion of the diffuser is disposed substantially in a center of a width of the preliminary inflatable portion. -
8. The air bag system according to claim 1, wherein
the plurality of gas feed holes have a same shape. -
9. The air bag system according to claim 1, wherein
at least one of the plurality of gas feed holes has a different shape.
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10. The air bag system according to clam 1, wherein
the diffuser is formed substantially in the form of the letter ā - Lā
including a connecting portion that has a substantially straight shape and is connected to the inflator and a gas distribution portion that extends in a curved shape from the connecting portion and is arranged within the gas supply port of the air bag. - View Dependent Claims (11)
- Lā
Specification