Abstract: In order to reduce the thickness of a connecting portion of an inflatable belt and a tongue, a gas introduction pipe is held by a pipe holder disposed at a side of a tongue. A narrow portion at the end of the inflatable belt is passed through an opening of the tongue, folded at the opening to be superposed on and sewn together with a wide portion of the inflatable belt. The rear end of the pipe is inserted into an insertion hole of the inflatable belt. The pipe has an exhaust pipe branched therefrom. Gas from an inflator is supplied into the inflatable belt through the pipe. As the weight of an occupant is applied on to the inflated inflatable belt, gas within the inflatable belt is discharged through the exhaust pipe, thereby absorbing the impact. Caps are put on ends of the pipes, respectively, to prevent foreign matter from entering the pipe assembly.

Abstract: An air bag mounting structure for a passenger-side air bag is formed of a retainer, an air bag, and a mounting frame for fixing the air bag to the retainer. The retainer includes an inflator housing for receiving an inflator therein, a neck portion formed at one side of the inflator housing, and an air bag housing for retaining the air bag. The air bag housing has a collar portion extending laterally outwardly from the neck portion above the inflator housing. The mounting frame is situated inside the air bag housing, and has a flange disposed on the collar portion above the neck portion. When the air bag is attached to the retainer, the mouth of the air bag is sandwiched between the collar portion and the flange in the air bag housing. Thus, gas leakage between the air bag and the retainer can be prevented.