Patent attributes
In one form, an airbag is provided with a first bag as a bag formed by joining base fabrics which includes a gas inlet for supplying pressure fluid fed from an inflator inward and a discharge passage for discharging the pressure fluid supplied inward to an outside, a second bag as a bag formed by joining base fabrics which includes an intake passage for introducing the pressure fluid discharged from the discharge passage of the first bag inward, and a passage joint member for joining the discharge passage of the first bag and the intake passage of the second bag while maintaining each cross section shape of the passages.