Mortise lock with restricted escape function and deadbolt pop-in function

Abstract

The present invention relates to a mortise including a dead bolt, a sub latch, a main latch, and a dead bolt operating unit to lock and unlock a door. Specifically, the mortise can permit insertion ofa latch bolt only when the door is open and can block the insertion of the latch bolt when the door is locked. So, the latch bolt performs a door locking function with the dead bolt so that securityof the mortise can be improved. When the sub latch half-protrudes due to a closure of the door, one among pressing protrusions of a latch cam and a pressing unit of the sub latch permit a backward movement of a latch transfer. So, when a latch stopper rotates in one direction, a locking protrusion blocks the insertion of the latch bolt. When the release of the dead bolt and the insertion and the withdrawal of the sub latch are completed as the door is opened and closed by a handle, one among the pressing protrusions or the pressing unit moves the latch transfer forward. So, the latch stopper rotates in the other direction, and the locking protrusion permits the insertion of the latch bolt. Accordingly, the mortise blocks the popping in of the spring bolt when the door is closed, and only when the door is opened, the popping in of the spring bolt can be allowed, with the bolt, the spring bolt can have the function of locking, and safety can be improved.

Description

technical field

[0001] The invention provides a mortise lock with the function of restricting escape and the function of bolt springing in, including: a bolt, a sub-lock, a deadbolt, and a bolt operation unit. In more detail, after the door is closed, the sub-lock will In the out state, the pressure of the pressurizing part and the pressurizing block is released, and the latch limit block moves backward. When the latch brake block swings in one direction, the lock block prevents the spring-in of the lock tongue; through the operation When the handle completes the spring-in and pop-out state of the child lock, the latch limiter moves forward through the pressurization of the pressurizing member or the pressurizing block, and at the same time, the latch brake block swings to the other direction. At this time, the The block begins to disengage, allowing the bolt to snap in. Therefore, when the mortise lock is in the closed state, it prevents the springing of the dead bolt, and o...

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