The present invention relates to a fastening structure of a snap-type flyback transformer, and since a screw is used in the conventional fastening structure, a hollow part must be formed on a fixed shaft of the fixed shaft, and a through hole for penetrating the screw is provided in the back cabinet. In order to solve the problem that the structure is deteriorated because it has to form a sphere, to form a locking groove 122 in a predetermined portion of the fixed shaft 120 is fixedly connected to the flyback transformer 100, the back cabinet Inside the 200, by installing the locking portion 215 for locking the locking groove 122 of the fixed shaft 120, unlike the conventional, by increasing the durability of the fixed structure without using a screw, It is a device that is resistant to falling or vibration, and that the flyback transformer is disassembled by simply pushing and pulling the fixed shaft to simplify the fixing and disassembling work.
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