| 摘要 |
PURPOSE: A pump device of an air gun is provided to shoot bullets from the air gun by uniform pressure while carrying just the air gun without a special compression pump or an auxiliary tank. CONSTITUTION: In a pump device of an air gun, a cam(3) is attached to a motor(2), inside the stock of the air gun. Links(6') are attached to each piston(6,7) of a first pump(4) and a second pump(5) with the inside diameter smaller than the inside diameter of the first pump. The links, rotating by a camshaft(3'), are fixed to the cam. The pump device has a pressure switch(8) and a pressure control valve(10), and a battery(9) is connected to the pressure switch and the motor by an electric wire(11). |
