Toyoda Gosei Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Eisiti Nakamura

Toshinori Tanase

Takashi Yamamoto

Hiroki Nakajima

Yasuo Ochiai

Hideyuki Fujiwara

Choko Tanabe

Katsuhiro Okumura

Yasushi Kubota

Yoshinari Takei

Shuji Miura

Choko Terazawa

Mikihito Ishii

Shinji Kondo

An airbag including an expansion part accommodating inflow of expansion gas to expand a peripheral wall, and linear joining portions arranged in a region of the expansion part and constituted by joining facing portions of the peripheral wall in a linear manner. The linear joining portions include a linear base, curved portions and swelling portions. Each of the curved portions is connected to the base and curvilinearly extends and bends toward the respective base thereof. The swelling portions are arranged at tip ends of the curved portions to smoothly connect outer peripheral edges thereof to outer peripheral edges of the curved portions. With this airbag, stress concentration is reduced around the swelling portions and the curved portions at the time of development and expansion. Thus, the linear joining portions can be arranged without causing breakage of the peripheral wall during development and expansion, and reduction in volume and expansion area held down as much as possible.

Airbag

Air bag for side air bag device

Growing community of inventors

Aichi-ken, Japan

Eisiti Nakamura