Anti-loosening seat for preventing plug from loosening

The utility model relates to the field of anti-loosening seats, and discloses an anti-loosening seat for preventing a plug from loosening, which comprises a base (10), a cover plate (11) and a torsion spring, the cover plate (11) is arranged on the base (10) through the torsion spring, the other end of the cover plate (11) is provided with a buckling block (111), and the buckling block (111) is provided with a limit groove (1111) clamped with a convex rib of the plug. The limiting groove (1111) penetrates through the left side and the right side of the buckling block (111), and the limiting groove (1111) is a trapezoidal groove. The buckling blocks (111) are integrally formed on the cover plate (11), the number of the buckling blocks (111) is two, and a groove (112) for a plug to pass through is formed between the two buckling blocks (111). The cover plate on the anti-falling seat is provided with the buckling and pressing block, when the plug is inserted into the anti-falling seat, the limiting groove in the