| 摘要 |
A device for preventing wrong fuel filling of a fuel cap is provided to preclude another kind of fuel from being injected in the fuel tank when the size of a gas gun is different from the set size by installing a fuel filling hole having a flange part. A device for preventing wrong fuel filling of a fuel cap comprises a fuel filling hole(110), a fuel cap(130), and a pair of moving levers(150). The fuel filling hole has a flange part whose upper end is bent to the outside. The fuel cap corresponds to an outer diameter dimension of a gas gun(200) and is formed with a groove(131) to open and close the fuel filling hole. The moving levers have one respective end coupled with two outer peripheral surfaces of the fuel cap, and the other respective end extended to be projected up to the inside of the groove along the outer peripheral surface of the fuel cap. The fuel cap includes a hinge part(133) fixed to the flange part, and a torsion spring(135).
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