Transformer with folding latch

The utility model providing a transformer with folding latch consists of a back cover of an internal circuit board, a front cover combined with the back cover correspondingly, a latch assembly which can pin joint with and fold the latch penetrating through the front cover, an electricity connecting assembly arranged in the front cover outside the latch assembly and a fixed part which is arranged outside the electricity connecting assembly and which fixes the electricity connecting assembly in the front cover. When the latch assembly is cocked, the inner side of the latch assembly is connected with a power input end of the circuit board through the electricity connecting assembly, and the power supply is input into the circuit board and is transformed; when the latch assembly is folded downwardly, the inner side of the latch assembly and the electricity connecting assembly is in an open-circuit condition. The utility model has efficacy of reducing packaging volume and storage space.