Research on the maintenance method of door lock and the problem of unlocking

1. When the lock is jammed, it's often due to strong winds that blow the door shut or cause the latch to get stuck. This can lead to the hook becoming disengaged, the door twisting, or the bolts loosening and protruding, making it difficult to open the door frame.

a. If you have a horn lock, refer to the guide on "how to deal with a locked horn."

b. For auxiliary locks (commonly found on iron or copper doors), the locking tongue or handle may be loose or sticking out, preventing the door from opening. To fix this, use a flat-blade screwdriver to push the protruding screw back into the door, which should help reset the mechanism.

2. If something is stuck in the lock, turning the handle or key might feel difficult. Make sure you're in the correct position: when inside, pull the door toward you; when outside, push it inward to reduce resistance. Standing outside and pushing the door outward can also help ease the pressure and make it easier to open.

3. If a locksmith says the lock is broken and cannot be opened, don’t automatically believe them. It’s wise to ask for a second opinion. Some locksmiths may exaggerate the problem to sell a new lock. A well-maintained, high-quality lock should last for many years without issues. Some shops may avoid unlocking it due to time constraints or technical challenges. Always choose a reputable and reliable service provider for peace of mind.

4. If your door lock won't open with a key, there are typically two possible scenarios:

a. You can't open it from the outside with the key, but if you pull the lever or push the button from inside, the door opens. In this case, the lock lever may have been removed. If someone previously used a hook to open the lock, it might have caused the hook to come off. To fix it, remove the interior panel and push the lock rod back into place.

b. You can turn the key from the outside, and the lock bar moves (up and down for straight locks, left and right for horizontal ones). You may hear the switch clicking even if you can't see it. However, the door still won’t open, and you can't unlock it with tools. This usually means the internal spring is damaged or stuck, and the lock may need replacement.

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