Direct-insertion type spiral retaining device of fuse

The utility model discloses a direct-insertion type spiral retaining device of a fuse. The direct-insertion type spiral retaining device comprises a metal mechanism which is fixed on a fuse insulator, and an insulating mechanism which is connected with the metal mechanism to be inserted into the upper part of the fuse, wherein the metal mechanism is mainly used for being matched with the fuse insulator, so as to realize the fast installation of the direct-insertion type spiral retaining device on the fuse, the direct-insertion type spiral retaining device can be insulated from the fuse after the insulating mechanism matched with the metal mechanism is inserted into the upper part of the fuse, a striker of the insulating mechanism is struck after a fuse wire of the fuse is fused, and the striker moves upwardly in a directed manner to strike a corresponding tripping board at the upper end, so as to achieve the effect of switching off and protecting a circuit. The direct-insertion type spiral retaining device ha