Shell switch closing hinge structure

The utility model belongs to the technical field of shell switches, and particularly relates to a shell switch closing hinge structure which comprises a shell upper cover and a bottom shell, the left end of the shell upper cover is movably connected with the top of the left side of the bottom shell, the shell upper cover is U-shaped and is of an integrated structure, a first buckling ring is arranged on the left side of the shell upper cover, and a second buckling ring is arranged on the right side of the shell upper cover. The first buckling ring is arranged to be in a C shape, an arc-shaped groove is formed in the inner wall of the right side of the first buckling ring, the inner wall of the arc-shaped groove is smooth, a limiting bag is arranged on the inner wall of the upper shell cover, and the limiting bag is located at the top of the left side of the arc-shaped groove. And when the shell upper cover is rotated, the buckling ring I is movably connected and clamped with the inner wall of the C-shaped gro