What s going on with the sudden inability to open the security door lock at home

Reason: 1. Due to the loosening of the safety bolt button in the door, the safety bolt was shaken down by excessive force when closing the door, and the lock cylinder could be rotated with the original key, but the door could not be opened.

2. When moving at the door of the house, first put up the safety bolt, and then forgot it, and forced the door shut when closing the door.

3. The child accidentally put on the safety bolt at home, and the safety bolt will not be opened, causing the person outside to open the lock with a key, and the door cannot be opened because the door lock is hit with the safety bolt.

4. The effect of the external force of the lock cylinder outside the anti-theft door is deliberately destroyed, and the glue and foreign matter are injected into the lock cylinder by people with ulterior motives, and the use of technical opening tools to dial the lock lock sheet produces automatic locking, and others deliberately destroy the internal bullet of the lock cylinder is dislocated, which will make the lock cylinder unable to open, clean up the foreign body, and add pencil powder to open with a key.

The door lock cannot be opened.

1. If someone in the door mistakenly takes the insurance and won't open it, you can carefully guide the person outside the door and teach the person inside the door to open the insurance step by step.

2. Generally, the door lock cannot be opened because of external force, perhaps because the deadbolt inside is decoupled, or the deadbolt is twisted in shape, and the screws that fix the deadbolt fall off, resulting in the door being stuck, and the door can not be out, and can not enter. This method is limited to cases where the door lock cannot be opened due to external physical forces.

3. If there is a foreign object stuck in the door lock and the door lock cannot be opened, please do the emergency treatment. Generally, there is a foreign object stuck in the door lock, and it is difficult to twist it open even if it is inserted with a key or finger, so in this case, it is necessary to find a way to twist the door lock. First of all, determine whether the door is open inside or outside, if it is open inside, pull it inward, and if it is open outside, push it inward.

The reason why the door lock won't open.

1. Someone in the door (such as children and the elderly) accidentally hit the safety bolt and will not open the safety bolt, causing the person outside to unlock the lock with a key, and the door cannot be opened because the door lock is hit with the safety bolt.

2. The user usually has the habit of lifting the safety bolt at home, and when opening the door, he forgot it for a while, so when he closed the door, he forced the door to close without shrinking.

3. It is due to the loosening of the safety bolt button in the door, and the force is too strong when closing the door, which shocks the safety bolt down, and the lock cylinder can be rotated with the original key, but the door cannot be opened.

4. The lock body is stuck by foreign objects or the lock body is damaged due to the quality of the lock body, and there is a situation that you can't get in and out.