초록 ▼

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 t

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.

대표청구항 ▼

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 suppli

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; anda diffuser serving to guide the gas from the inflator into the air bag, whereina 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. 2. The air bag system according to claim 1, whereinthe 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, whereinthe preliminary inflatable portion is stored in an unfolded state in the vehicle. 4. The air bag system according to claim 3, whereinthe 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, whereinthe preliminary inflatable portion is adapted to be inflated into a substantially cylindrical shape. 6. The air bag system according to claim 1, whereina 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, whereinthe 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, whereinthe plurality of gas feed holes have a same shape. 9. The air bag system according to claim 1, whereinat least one of the plurality of gas feed holes has a different shape. 10. The air bag system according to clam 1 , whereinthe diffuser is formed substantially in the form of the letter “L” 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. 11. The air bag system according to claim 10, whereinthe gas supply port of the air bag includes an attaching portion to be airtightly attached onto a periphery of the connecting portion of the diffuser.