Mitsubishi Jidosha Kogyo Kabushiki Kaisha

Akira Yoshioka

Noritaka Nagayama

Mikiharu Shimoda

Junichi Nakamura

Tsutomu Ookochi

In a side impact air bag system having a bag comprising a main body, an upper inflation unit, and a lower inflation unit, the boundaries of the main body and the upper inflation unit and the lower inflation unit are joined and temporally sewn by sewn portions. The main body is inflated without having the upper and lower units inflated until the blowing gas from an inflator into the bag reaches a pressure above a predetermined pressure, and when the pressure inside the bag reaches the pressure above the predetermined pressure, the sewn portions are separated therefrom to flow gas into the upper and lower inflation units to deploy the upper and lower inflation units. Thus, the bag is positively inflated in a narrow space between a passenger and a vehicle without excessively increasing impact against a chest portion of the passenger.

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Chiryu, Japan

Akira Yoshioka