1. Take necessary protective measuresThe door lock expands and contracts smoothly due to thermal expansion and contraction, especially in winter, when the seasons change, the weather changes obviously, and the temperature difference between indoor and outdoor is large, so protective measures should also be taken in winter.
2. Clean frequentlyWhether it is the lock body or the door handle, if there are stains during use, it is necessary to prevent the door handle from corroding or deal with the stains deep in the lock body in time, and clean it with neutral detergent.

3. Use the correct way to close the doorDoor handles often break quickly because some of my friends' houses don't use the proper way to close the door. Generally speaking, when closing the door, you should first hold the door handle, tighten the bolt to the lock body, then close the door and then loosen it, so as not to break the handle due to excessive force or the wrong direction.

4, pay attention to maintain lubricationIf you hear metal squeaks when opening and closing the door, put a small amount of lubricant on the door hinge. If the closing resistance is too great, you can lubricate the movable bolt with a little oil. When opening the door, the key is not fully inserted into the keyhole. In winter, first check whether the keyhole is frozen, and in other seasons, check whether there are other foreign objects in the keyhole. Door handles and locks are essential in everyday life and very important for maintenance.

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