Igniter for air bag system

An igniter for an air bag system, which is one or at least two igniters incorporated in the plural of the gas generators and used in an air bag system comprising an electronic control unit connected to a power source and an impact detecting sensor, and plural module cases which are connected to the electronic control unit and accommodate plural gas generators and plural air bags, wherein,

• in the air bag system, a bus line comprising plural loop wires which pass through the electronic control unit is provided to supply and transmit currents and required information, and individual gas generators accommodated in the plural module cases are connected operationally by plural conductors branched at predetermined portions from the bus line,
• the one or at least two igniters incorporated in the gas generator is each electric igniter which is provided with a heat generating portion and a priming coming in contact with the heat generating portion, and the igniter and the bus line are connected to each other through plural conductors,
• a capacitor, an integrated circuit in which information for developing a required function is stored, and the heat generating portion is provided on one substrate in each igniter, and the substrate is provided vertically, and
• at least the capacitor and the integrated circuit, and the priming on the substrate are not in contact with one another, and a current for igniting a priming is supplied to the igniter through the capacitor in the igniter.

An igniter for an air bag system, which is one or at least two igniters incorporated in the plural of the gas generators and used in an air bag system comprising an electronic control unit connected to a power source and an impact detecting sensor, and plural module cases which are connected to the electronic control unit and accommodate plural gas generators and plural air bags, wherein,

• in the air bag system, a bus line comprising plural loop wires which pass through the electronic control unit is provided to supply and transmit currents and required information, and individual gas generators accommodated in the plural module cases are connected operationally by plural conductors branched at predetermined portions from the bus line,
• the one or at least two igniters incorporated in the gas generator is each electric igniter which is provided with a heat generating portion and a priming coming in contact with the heat generating portion, and the igniter and the bus line are connected to each other through plural conductors,
• each igniter has a capacitor and an integrated circuit in which information to exhibit a required function which are provided on the one substrate, and the substrate is provided vertically,
• a header, which supports an electroconductive member for supplying and transmitting a current between the substrate and the heat generating portion, sections vertically between the substrate and the priming, and the substrate is arranged below the header and the heat generating portion is arranged above the header, and
• a current for igniting the priming is supplied to one or at least two igniters through the capacitor in the igniter.