Locking mechanism

The utility model discloses a locking mechanism, which is mainly composed of a positioning hole, a lock catch board, a lock catch piece and an inserted pin. The utility model is characterized in that the lock catch piece penetrates through the positioning hole which is arranged on a main body, and the lock catch board of a casing; the inserted pin which is sheathed in the end of the lock catch piece is utilized to clamp the lock catch piece, the casing is also stressed for spacing so as to obtain the locking effect. Thereby, the work of disassembling and assembling locking screws can be avoided in locking the casing.