Patent attributes
A passenger seat air bag apparatus includes an air bag which is housed folded inside an instrument panel, and inflates toward a passenger who is seated in a front passenger seat with a supply of gas during a frontal collision, and which has a vent hole that can be opened and closed; a first strap which is connected to both an area around the vent hole and a rear lower portion of a base cloth of the air bag in the longitudinal direction of the vehicle, and which closes the vent hole as the air bag inflates; and a second strap which is connected to an edge portion of the vent hole, and pulls on the edge portion of the vent hole and on the first strap around the vent hole so as to open the vent hole when the passenger who is wearing a seatbelt is restrained by the air bag.
