Charger

The utility model discloses a charger comprising a shell, wherein the shell includes a lower shell body and an upper shell body which can be rotatably assembled on the lower shell body. The lower shell body is provided with a circular accommodating groove, a tenon is convexly arranged on the inner groove wall of the upper end of the accommodating groove, and a lower clamping part which is convex outwards is arranged on the outer wall of the lower shell. The lower end of the upper shell body is connected with an annular clamping ring, one end of the clamping ring is provided with a clamping groove, and an upper clamping part which is convex outwards is arranged on the outer wall of the upper shell. After the upper shell and the lower shell are assembled and closed, the clamping ring is disposed in the accommodating groove, the tenon is clamped in the clamping groove, and the upper clamping part and the lower clamping part are oppositely matched and can clamp a plate-shaped object. Through the upper clamping pa