Patent ID: 8353527

Claim:
An airbag device comprising: a side-collision detecting means for detecting a side collision of a vehicle; a central airbag housed in an inner portion in a car width direction of at least one of two adjacent seats in the vehicle; a seat frame for the seat; a connecting member connecting the airbag to a side face of the seat frame, said connecting member being fixed to the airbag at a connection point so that the airbag has a base end side with respect to the connection point in a front-back direction of an inflated airbag; a tether provided along an outer face of the inflated airbag located at a side opposite to the seat, said tether extending from the connecting member to a distal end portion of the inflated airbag; and an inflator housed in the seat retaining said central airbag and supplying a gas into said central airbag at a side collision of the vehicle, wherein said tether has a length shorter than a length along the outer surface of the inflated airbag from the connection point to the distal end portion so that said central airbag counteracts a force from inside in the car width direction by a tension due to the length of said tether and counteracts a force from outside in the car width direction by a force received from a side face of the base end side of said seat frame during inflation and extension.