Can the door be opened from the inside if it is locked?

According to the General Principles for the Design of Civil Buildings, doors intended for domestic use must meet the following requirements:

1.The door is locked from the outside, and it is impossible to open it on the inside except with a key.

2.The door is locked, and no matter what the door lock is, it can be opened inside.

Therefore, if the door is locked, it is recommended to use the key to open it, if the key is lost or you can't use the key, you can try to call the lock picking company or call 119 directly for help.

It may not be possible to open.

If you use the key inside the door to lock the security door, and remove the key after the lock, you can open the security door by using the key outside the door.

However, if you use the key inside the door to lock the security door, and rotate the key 90 degrees without removing the key, you will not be able to open the door even if you use the key outside the door.

If it is difficult to twist the handle or key open, and the door is open outward, you can pull the door inward; If the door is inward-open, you can push the door outwards with force, which not only reduces the jamming force, but also allows the door to be easily twisted open.

When people are outside, you can find a olecranon pliers or water pipe wrench, and clamp the horn lock grip and twist it hard, grasp the handle and the lock cover to turn left and take it out, and then knock the lock body inward (because it cannot be pulled out, the lock body is stuck by the inner cover) You can see the oblique tongue. Then find a needle-nose pliers or a flat-nose driver, and pull the oblique tongue to the horizontal to not let go, it will bounce back after letting go, and finally push the door open.

This can be done in the event of an emergency. If it is due to the failure of the lock, it is recommended to find a locksmith or call the police for help.

How to maintain the anti-theft door lock:

1. If it is a new anti-theft door lock, after two to three months of use, the key may not be able to be plugged and unplugged smoothly, many owners think that there is a problem with the lock cylinder of the anti-theft door, in fact, this is a very normal phenomenon, just send the graphite powder into the lock hole, do not use any oily substance.

2. When closing the anti-theft door, you must hold the handle, and then screw the lock tongue into the lock body, close the anti-theft door and then let go, and do not hit the door hard, so as not to shorten the service life of the door lock. The sealing strip installed between the door body and the door frame has a certain elastic force, so do not roll the handle vigorously when opening the door, so as not to crack the handle.

3. Before sleeping and going out, the anti-theft door must be locked, and you must not think that someone in the house does not need to be locked, and the thief will not give up when he enters the house and steals, so he must use the key to lock the anti-theft door, so as to maintain the safety of our lives and property.

The door may not be able to be opened on the outside if it is locked, you need to see what kind of door it is, if it can be opened with a key inside and outside; If it is a double-safe door or the door has only a small lock inside, it cannot be opened.

There are two methods: 1. If you have a key, find someone to open it from the outside.

2. Some door locks can be removed from the inside, and the door will be opened. Then reset the internals and put them on.

After the record sharing door was locked, it was opened from the outside as long as this trick was done.

Some people climb the stairs and climb the windows for convenience, which is extremely unsafe. It is recommended that you find a lockpicking company.

You can't do it with ordinary locks, and I don't know what kind of locks your house are, so I don't know if you can open them from the inside.

Most door locks are locked on the outside, and the door lock can be opened with a key inside, and it must be opened with a key.

The door is locked and the acorn may not be able to open on the outside, so you need to see what kind of door it is.

If the door can be keyed inside and out, Liang Lubi can open it. If the door is the kind of double safety, there is a small lock, and the reverse lock is locked, and the outside cannot be opened. If the door is only locked on the inside, and there is no keyhole, once this is locked, the outside cannot be opened.

If the inside of the security door is locked with a knob, under normal circumstances, the outside cannot be opened. If there is only one way to force it open, it is to ask the lock king to pick the lock from the outside. Lock refers to the appliance that plays a closed role, it includes lock, key and its attached quiet parts, now, in addition to opening the lock with the key, it can also be opened with instructions such as light, electricity, magnetism, sound and fingerprint.

Pick the lock cylinder: First, look at the key of the door lock. The more and deeper the "teeth" of the key, the more complex the arrangement of the door lock and the more difficult it is to open.

Second, look at the color of the door lock. The door locks are electroplated, the luster and smoothness are very good, if the color is dark yellow, it should be a copper core, this material is relatively strong, so the protection is better.

Third, look at the weight of the door lock. The heavier the weight, the better the material of the lock cylinder, the better the quality of the lock cylinder, the more beads in the lock cylinder, and the better the protective performance of the lock.

The above content refers to Encyclopedia - Security Door.

Hello, if the door is locked from the outside, then the door can generally be opened inside, because the inside of the door has a lock knob, so you only need to turn the lock knob to be able to open the door. But if the door is locked from the inside, then there is no way to open the door from the outside, unless you buy a key that can be used both inside and out, then you can open the door with a high eye. But if you buy a double-insured door, then it is not possible to open it, because there is a small lock inside the double-safe door, so there is no way to open the door when it is locked.

Hope it helps.

Summary. Dear, hello, here to help you find that under normal circumstances, the inside of the door lock is locked and the outside cannot be opened. Because the door lock is designed to guarantee the security of the door and prevent outsiders from opening the door lock by simple methods.

If the inside of the door lock is reversed to the outside, it is equivalent to locking the deadbolt of the door lock in reverse, and it cannot be opened by using the key from the outside. If you need to open the door lock, you need to unlock it from the inside with a key or other tool. However, if the door lock itself has some design flaws or is not used properly, it may cause the door lock to be opened inside and outside.

Therefore, when using door locks, you should choose a door lock with high security and use the door lock correctly to avoid potential safety hazards.

Is the lock change for these two holes or is it deliberately artificial?

Dear, hello, here to help you find that under normal circumstances, the inside of the door lock is locked and the outside cannot be opened. Because the door lock is designed to guarantee the security of the door and prevent outsiders from opening the door lock by simple methods. If the inside of the door lock is reversed, it is equivalent to locking the deadbolt of the door lock in reverse, and it cannot be opened by shouting the key from the outside.

If you need to open the door lock, you need to unlock it from the inside with a key or other tool. However, if the door lock itself has some design flaws or is not used properly, it may cause the door lock to be opened inside and outside. Therefore, when using the door lock, you should choose the most advanced and high-security door lock, and use the door lock correctly to avoid potential safety hazards.

These two are man-made.

What is the use of destroying these two holes?

I don't know about this, and the method of doing this is different, but I suggest that it is safer to change to another one.

I locked the door three times with a key, and then twisted back each time only one turn, and then the manual lock couldn't move, obviously the lock was locked manually.

It means that someone has moved, dear.

Could it be related to these two holes? Yes.

When the door is locked, try the following:1. If you have a key in your hand, but the inside is locked, and the key inside is still inserted in the lock. At this time, you can use the key in your hand to push twice on the outside, and if the key inside is horizontal and can be pushed out, the problem is solved.

2. If you don't have a key: if the door is thick and there are grooves in the door seams. You can try to break the handle in the opposite direction with force, or use a tool such as pliers to get stuck and the handle can generally fall off.

At this time, there is no need to worry about damaging the door lock after the handle falls off, in fact, the damage is only the shell of the lock, and the intermediate structure such as the lock cylinder is not broken, and the shell can be replaced.

3. There is also the use of some hard metal sheets, cards, etc., to sell lead along the crack of the door to advance, and push hard against the lock card a few times to open it.