Plug-in door lock with outer handle and anti-damage escape function

Abstract

The invention relates to a plug-in door lock with an outer handle and an anti-damage escape function. The plug-in door lock comprises a front lock body assembly, a rear lock body assembly and a main lock body assembly; one end of a front transmission shaft of the front lock body assembly is installed on a front handle only in the axial moving mode, and the other end of the front lock body assemblyis provided with a clutch middle shaft which can only be axially retracted and extended out of the front transmission shaft; an ejector rod only capable of axially moving is arranged in a hollow cavity of a rear transmission shaft of the rear lock body assembly, and one end of the ejector rod extends out of the rear transmission shaft, and is connected and fixed to a release key arranged on a rear handle; further, the other end of the front transmission shaft is connected to a rotating shaft assembly body of the main lock body assembly, and the clutch middle shaft clamps the rotating shaft assembly body so as to drive the rotating shaft assembly body to rotate; and the other end of the rear transmission shaft clamps the rotating shaft assembly body, and the release key is pressed down todrive the ejector rod to extend out of the rear transmission shaft and extend into the rotating shaft assembly body, the clutch middle shaft is jacked into the front transmission shaft and is separated from the rotating shaft assembly body, the plug-in door lock is switched into an anti-damage escape state, so that the plug-in door lock has the anti-damage escape function, and the use safety is high.

Description

technical field [0001] The invention belongs to the technical field of locks, in particular to a mortise door lock with an outside handle and an anti-destructive escape. Background technique [0002] At present, the existing mortise locks on the market all include a front lock body assembly, a rear lock body assembly and a main lock body assembly, but the applicant found that these existing mortise locks cannot be turned and opened by the front handle of the front lock body assembly. When (such as: when the front handle is damaged by human beings and cannot be rotated and opened), then it cannot be opened by operating the rear handle of the rear lock body assembly, so that the mortise lock cannot be used normally, and the safety is relatively low. Contents of the invention [0003] In order to solve the above-mentioned problems in the prior art, the present invention provides a door lock that can be switched to the anti-vandal escape state by operating the release key when...

AI Technical Summary

Problems solved by technology

[0002] At present, the existing mortise locks on the market all include a front lock body assembly, a rear lock body assembly and a main lock body assembly, but the applicant found that these existing mortise locks cannot be turned and opened by the front handle of the front lock body assembly. (for example: when the front handle is maliciously damaged and cannot be turned and opened), it cannot be opened by operating the rear handle of the rear lock body assembly, so that the mortise lock cannot be used normally, and the security is relatively low

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