| 摘要 |
PURPOSE: An automatic open-and-shut fuel injection port is provided to insert and take out an oil control gun into/from the fuel injection port without a process for removing a fuel cap and to open and shut a valve in the fuel injection port by mounting automatic open-and-shut first and second valves in the fuel injection port. CONSTITUTION: An automatic open-and-shut fuel injection port(20) of a fuel injection pipe(10) connected to a fuel tank of a vehicle is composed of an oil control gun holder(100) combined to the outer peripheral surface of an oil control gun(50) if the oil control gun is inserted and formed with threads at the outer peripheral surface; a rotary member(120) installed in the fuel injection pipe and formed with thread grooves corresponding the threads at the inside to rotate by the insertion of the oil control gun holder; a spring(112) for pushing the oil control gun holder to the fuel injection port in taking out the oil control gun; and a first valve(200) installed to the bottom of the rotary member to open and shut the fuel injection port to the rotational direction of the rotary member.
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