Lock body with upward locking first-gear coupler knuckle

Abstract

The lock body comprises a lock body panel, an upper lock shell and a lower lock shell, the lock body panel, the upper lock shell and the lower lock shell are detachably connected, and the upper lock shell covers the front end of the lower lock shell. A transmission piece is arranged on the lower lock shell, the left end of the transmission piece is in transmission connection with a hook tongue capable of penetrating through the lock body panel to do repeated telescopic motion, the right end of the transmission piece is in transmission connection with a locking block, the locking block is located on the front side or the rear side of the transmission piece, a lock cylinder shifting wheel is arranged below the transmission piece, and a shifting wheel shifting block is arranged on the upper portion of the lock cylinder shifting wheel. And the shifting wheel shifting block is in transmission contact with the lower part of the locking block and the lower part of the transmission sheet respectively. Due to the fact that the hook tongue faces upwards, the hook tongue is knocked out after the door is closed, the hook tongue retracts into the lock body when the door is opened, the anti-theft function of preventing the door from being lifted and opened by external force is achieved, and failure of the door lock caused by downward falling of the door leaf due to deformation is further prevented. According to the product, the possibility that people are scorched due to misoperation is avoided, the cost of the lock body is also reduced, and the installation steps are the same as those of a traditional installation mode.

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