Different from the commercial hardware standard, the civilian hardware accessories have been used for a long time, and it is prone to many problems here and there. Especially the door locks, such high-load operating parts, have a long service life, and it is inevitable that there will be some trouble. It is often found that some users and friends, the damage of the door locks in the home is often caused by improper use or maintenance.
Some things to pay attention to in the maintenance of door locks:
Some friends tend to drop some lubricity into the keyhole when the door locks are bun or tight. This way, the door locks may be smooth, but because the oil is easy to stick, the keyholes are later. It is easy to accumulate dust slowly and form oil putty, which makes the door lock more prone to failure.
The correct solution: cut some pencil pieces or some candle pieces, blow them into the inside of the lock cylinder through the thin tube, and then insert the key repeatedly for several times.
In some cases, due to the gravity of the door leaf, or the cause of the door leaf, the door leaf sinks, and the door is locked or the door is not smooth. At this time, it is often difficult to open the door with a key and lock the door. At this time, do not forcibly twist the key, so as not to break the key and increase trouble.
The correct solution: you should first check the reason. If the door leaf sinks due to loose leaf, the loose leaf should be fastened with screws. If the door frame is deformed or its cause is unrecoverable, start with the door frame and expand the lock tongue accordingly, so that the door lock switch door can resume normal and smooth.