How to keep door lock in good condition

Precautions for door lock maintenance:
lubricant of the door lock
When the door lock is astringent or tight, some friends often like to drip some lubricating oil into the lock hole. In this way, the whole body of the door lock may be smooth immediately, but because the oil is easy to stick ash, it is easy to slowly accumulate dust in the lock hole and form oil putty, which makes the door lock more prone to failure.
Correct solution: cut some broken pencils or candles, blow them into the lock cylinder through a thin tube, then insert the key and turn it several times.

The door lock doesn't open smoothly
Sometimes, due to the gravity of the door leaf itself or the loose leaf of the door, the door leaf sinks and the door locking or opening is not smooth. At this time, it is often difficult to open and lock the door with a key. At this time, do not twist the key forcibly, so as not to break the key and increase trouble.

Solution: check the reason first. If the door leaf sinks due to loose loose loose loose loose loose loose loose leaf should be fixed with screws. If the door frame is deformed or unrecoverable due to its reasons, start with the door frame and expand the lock tongue accordingly. In this way, the door lock can be opened and closed smoothly.