Abstract: An air bag type of passenger protector equipped in a vehicle. The passenger protector comprises a compressed gas supplying assembly and an air bag receiving assembly for receiving an air bag which is connected to the compressed gas supplying assembly by means of a power hose. The compressed gas supplying assembly comprises a compressed gas container, a movable weight, a hinged link, a hinged lever and a perforating pin. If there occurs a vehicle collision, the weight is reliably operated in response to a mechanical shock caused by the vehicle collision and this causes the hinged link and the hinged lever to be sequentially turned and in turn causes the perforating pin to be pushed so as to perforate a closed tip of the compressed gas container.