Boosted double-stroke energy-storage type air-inflating device

The utility model relates to a reinforcing double-stroke energy storing type air inflating device. Compared with an old inflator, the reinforcing double-stroke energy storing type air inflating device is characterized in that a main cylinder of the air inflating device is composed of a left air cylinder, an energy storing cylinder and a right air cylinder; the energy storing cylinder is also positioned between the left and the right air cylinders; meanwhile, the length from the top of a rocking handle to a frame shaft of the main cylinder is more larger than the length from a sliding block of a fixing shaft to the frame shaft of the main cylinder. Thus, the utility model has the effect of double-stroke energy storage, force reinforcement and labor saving at the time of inflation.