Rocker arm double-piston inflator

The utility model relates to an inflator with a swing arm and two pistons, which is composed of an inflator body, a crank shaft with a swing arm, and two pistons with connecting rods, wherein, the crank shaft is arranged on the middle point position of an axial cord of the inflator, and the pistons are respectively arranged on both sides of the middle point of the axial cord of the inflator and movably connected with the crank shaft through the connecting rods. The utility model completes the operation of inflation through the crank shaft driving the pistons. The utility model has better use effect and can be used with high efficiency and force saving so long as a proper torque ratio is selected.