Patent ID: 7360789

Claim:
An airbag device for front passenger's seat comprising an airbag folded and housed in a case mounted on an instrument panel in front of front passenger's seat, and deployable rearward and toward an occupant when fed with inflation gas, wherein: a rear side face of the airbag as completely deployed confronts the occupant and serves as a restraint face; the airbag comprises an upper inflatable portion and a lower inflatable portion arranged vertically at airbag inflation, and rear side faces of each of the upper and lower inflatable portions define upper part and lower part of the restraint face; a lower wall of the upper inflatable portion and a top wall of the lower inflatable portion contact and overlap with each other as the airbag is completely inflated; a contacting face of the top wall and the lower wall is wide enough to stay contacted when either the upper inflatable portion or the lower inflatable portion restrains a part of occupant; and the contacting face of the top wall and the lower wall is wide so that tension generated in one of the upper part and the lower part of the restraint face by engagement of the occupant does not affect the other of the upper part and the lower part of the restraint face when the airbag is completely inflated; the airbag further comprises a communication hole located forward of the top wall and the lower wall for communicating the upper inflatable portion with the lower inflatable portion; a gas inlet port located in a front part of the airbag as inflated, the inlet port being communicated with the communication hole for feeding the airbag with inflation gas; and two tethers connecting front ends of the lower wall and top wall and periphery of the gas inlet port, wherein: the upper inflatable portion includes a first left wall arranged in a left side and a first right wall arranged in a right side, the lower inflatable portion includes a second left wall arranged in a left side and a second right wall arranged in a right side, the first left wall and the second left wall are made of a first single base cloth, the first right wall and the second right wall are made of a second single base cloth, in the first base cloth, the first left wall and the second left wall are joined at a front part, and in the second base cloth, the first right wall and the second right wall are joined at a front part, so that the first base cloth and the second base cloth each is shaped to be separated at a rear part with a slit between the first and second left walls, and a slit between the rear part of the first and second right walls, the two tethers are disposed in a vicinity of left and right ends of the lower wall and the top wall, the gas inlet port is arranged between the two tethers.