Auxiliary lock structure with self-tightening function

Abstract

An auxiliary lock structure with a self-tightening function comprises a lock catch box, a lock shell, a spring bolt, a first driving plate and a lock body assembly. The lock catch box is used for being connected to a door frame and comprises a lock groove located in one side of the lock catch box. The lock shell is used for being connected to a main door. The lock tongue is rotationally connected to the lock shell, and the lock tongue can enter or exit from the lock groove through movement so as to achieve locking or unlocking; the first driving plate is movably arranged on the lock shell in a penetrating manner, and the first driving plate is in transmission connection with the spring bolt; the first driving plate is in transmission fit with the spring bolt through the lock body assembly; the lock body assembly comprises a connecting shell, an input sleeve and an output shaft, the output shaft is movably arranged in the input sleeve in a penetrating mode, and the spring bolt is connected with the output shaft. According to the auxiliary lock structure, the spring bolt can abut against the interior of the lock catch box through translation of the spring bolt, so that the reliability of the auxiliary lock structure is improved, and noise can be effectively avoided.

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