Idle safety door lock

Abstract

The invention discloses an idle safety door lock which comprises a front face plate assembly, a rear face plate assembly, a lock body and a transmission part. The front face plate assembly comprises a front base and a front lever handle arranged on the front base in a rotating manner. The rear face plate assembly comprises a rear base and a rear lever handle arranged on the rear base in a rotating manner. The transmission part is arranged on the front face plate assembly and / or the rear face plate assembly in a rotating manner. The transmission part is connected with the lock body. The front lever handle and the rear lever handle can drive the transmission part to rotate so as to control unlocking and locking action of the lock body when rotating. The front face plate assembly is provided with a lock cylinder. The front lever handle is connected with the transmission part through a clutch mechanism. The lock cylinder can switch the combination state and the separation state between the front lever handle and the transmission part through the clutch mechanism. According to the idle safety door lock, the situation that all parts of the door lock are loosened and damaged can be effectively avoided, the service life is prolonged, the violent cracking way of screwing the front lever forcibly to damage the front face plate assembly can be prevented, safety antitheft performance of the door lock is effectively improved, and use is facilitated.

Description

technical field [0001] The invention relates to the field of locks, in particular to a door lock. Background technique [0002] The door lock is usually installed on the door, including the front panel assembly, the rear panel assembly, the lock body and the transmission part. The front handle on the front panel assembly and the rear handle on the rear panel assembly can drive the transmission part to rotate and then control the lock body The front panel assembly is usually provided with a lock cylinder, which is used to lock or unlock the door lock. In the existing door locks, the lock cylinder is usually locked by locking the front handle on the front base. For locking, the front handle is always connected with the transmission part. When opening the door, the user usually twists the front handle tentatively to judge whether the door lock is locked. After a long period of frequent twisting, the front handle The locking structure between the front base and the front base i...

AI Technical Summary

Problems solved by technology

[0002] The door lock is usually installed on the door, including the front panel assembly, the rear panel assembly, the lock body and the transmission part. The front handle on the front panel assembly and the rear handle on the rear panel assembly can drive the transmission part to rotate and then control the lock body The front panel assembly is usually provided with a lock cylinder, which is used to lock or unlock the door lock. In the existing door locks, the lock cylinder is usually locked by locking the front handle on the front base. For locking, the front handle is always connected with the transmission part. When opening the door, the user usually twists the front handle tentatively to judge whether the door lock is locked. After a long period of frequent twisting, the front handle The locking structure between the front base and the front base is prone to loosening and breakage, which will affect the service life of the door lock. At the same time, this type of door lock is also easy to crack by force by forcibly twisting the front handle, and the safety performance is poor

[0003] On the other hand, the rear panel assembly of the door lock is usually provided with an anti-lock piece, which can be used to lock the door lock from inside the house. The hand, the transmission part and the rear handle are usually connected together. Like this, after using the anti-lock part to lock the door lock, the anti-lock part must be unlocked to unlock the door lock. If you are nervous, you will often forget to unlock the anti-lock first, which will lead to a lot of time wasted in the process of opening the door, and when there are many people escaping, if you cannot open the door lock and convenience in time, it is easy to form congestion at the door and further waste Escape time, and prone to serious accidents

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