| 摘要 |
A hybrid inflator for an airbag system using a projectile is disclosed. The projectile includes a rod portion and a stop end portion larger in diameter than the rod portion, a plurality of grooves functioning as a passageway of the gas flow are formed on the rod portion, and an end of the rod portion tapers to a point. The inflator includes an actuator assembly in which the projectile and a propellant are retained. The actuator assembly is secured to a container storing a pressured gas so that a portion of the actuator assembly projects into the container. A blocking cap isolates the container from the actuator assembly. When the airbag system initiates activating, projectile ruptures a circular upper surface of the blocking cap and a burst disk and the hot combustion gases tear away portions of side wall of the blocking cap. The combustion gases are introduced in the container through the torn portions of side wall of the blocking cap and are mixed with the pressured gas to raise the pressure and temperature of the container. Consequently, an air pressure is generated which is sufficient to inflate the airbag.
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