A double-linkage handle lock with convenient anti-locking

Abstract

The invention belongs to the technical field of locks, and particularly relates to a dual-linkage handle lock facilitating back locking. The dual-linkage handle lock comprises a handle. A handle sleeve is arranged at one end of the handle and provided with a through hole in the axial direction of the handle sleeve. A button, a square strip sleeve and a square strip are sequentially arranged in the through hole. The button is circumferentially fixed relative to the handle sleeve. The square strip is circumferentially fixed relative to the square strip sleeve. The handle sleeve is connected with a first transmission part circumferentially fixed to the handle sleeve. The square strip sleeve is connected with a second transmission part circumferentially fixed to the square strip sleeve. When the button is in a compressed position, the button is connected with the square strip sleeve, and the square strip sleeve is circumferentially fixed relative to the button and the handle sleeve; when the button is in an extending position, the square strip sleeve can rotate relative to the button and the handle sleeve when the handle sleeve rotates around the axis of the handle sleeve in the first direction; and when the handle sleeve rotates in the second direction, the square strip sleeve is circumferentially fixed relative to the button and the handle sleeve. A user does not need to press the button during back locking of the dual-linkage handle lock, and user operation is facilitated.

Description

technical field [0001] The invention belongs to the technical field of locks, and in particular relates to a double-linkage handle lock which is convenient for anti-locking. Background technique [0002] A lock with a handle or handle is one of the locks. It is often installed on security doors such as wooden doors, steel doors, aluminum alloy doors or plastic doors. In the room, as long as the handle is pulled, the lock on the security door can be driven by the handle. The movement of the dead bolt makes the anti-theft door open, which is convenient for unblanking and is used by a wide range of families. But cat's eye is all installed on most anti-theft doors now, is convenient to observe outdoor situation. However, some lawbreakers extend the special tool into the room after destroying the peephole and pull the handle to open the anti-theft door and then burglary. [0003] For this reason, there has been the double linkage handle lock of preventing cat's eye unlocking in...

AI Technical Summary

Problems solved by technology

[0004] However, the existing double linkage handle locks have encountered the following problems in use: in some occasions, the handle of the double linkage handle lock not only has an unlocking function, but also has an anti-locking function, which can realize pressing the handle down to unlock, and pulling the handle up Anti-lock

As mentioned above, if you want to drive the movement of the square bar, you must press the button first. Therefore, when the user wants to unlock the double linkage handle lock, he must also press the button first. This will undoubtedly increase the operation steps when unlocking and damage the user experience.

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