Airbag gas producer
First Claim
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1. A gas generator for an air bag, comprising:
- a housing having a gas discharging port;
an initiator assembly provided with a first igniter and a second igniter mounted to the housing via a holder, each of the first igniter and the second igniter including a priming activated upon an impact, the second igniter having, a center pin connected to an external power supply to constitute a positive electrode, a grounding pin connected to a metal portion of a motor vehicle to constitute a negative electrode, and switch means of current provided between the center pin and the external power supply; and
gas generating means ignited and burnt by the initiator assembly to generate a combustion gas.
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Abstract
A gas generator for an air bag comprises: a housing having a gas discharging port; an initiator assembly provided with a first igniter and a second igniter mounted to the housing via a holder, each of the first igniter and the second igniter including a priming activated upon an impact, the second igniter having, a center pin connected to an external power supply to constitute a positive electrode, a grounding pin connected to a metal portion of a motor vehicle to constitute a negative electrode, and an opening-shutting device of current provided between the center pin and the external power supply; and gas generating material ignited and burnt by the initiator assembly.
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Citations
9 Claims
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1. A gas generator for an air bag, comprising:
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a housing having a gas discharging port;
an initiator assembly provided with a first igniter and a second igniter mounted to the housing via a holder, each of the first igniter and the second igniter including a priming activated upon an impact, the second igniter having, a center pin connected to an external power supply to constitute a positive electrode, a grounding pin connected to a metal portion of a motor vehicle to constitute a negative electrode, and switch means of current provided between the center pin and the external power supply; and
gas generating means ignited and burnt by the initiator assembly to generate a combustion gas. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An air bag system, comprising:
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an air bag apparatus including, a gas generator for an air bag having a housing provided with a gas discharge port, and ignition means attached to the housing, and an activation-signal outputting device for outputting an electrical activation-signal to the gas generator, wherein, the ignition means is provided with a first igniter and a second igniter activated by an electrical activation-signal, and the first igniter and the second igniter are mounted to the housing via a holder, each of the first igniter and the second igniter includes a grounding pin electrically connected to a metal portion of an outer shell vessel of the igniter, and a center pin electrically connected to the grounding pin only via an electric resistance wire and the metal portion, the activation-signal outputting device is provided with a switch means for controlling the output of the activation-signal to each igniter, and in the second igniter, the center pin is connected to the activation-signal outputting means to serve as a positive electrode.
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9. A method of receiving an activation-signal in a gas generator for an air bag activated by receiving an electrical activation-signal, comprising:
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providing the gas generator having a gas discharging port formed in a housing thereof;
providing ignition means including first and second igniters activated by an electrical activation-signal;
providing each of the first and second igniters with a grounding pin electrically connected to a metal portion of the igniter and a center pin electrically connected to the grounding pin only via an electric resistance wire and the metal portion, the center pin of the second igniter serving as a positive electrode to receive the signal; and
providing the ignition means in the gas generator.
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Specification