The anti theft door lock tongue can t go back to the home, and the small tongue of the anti theft do

This lock is not broken, just the internal screws are loose. The teeth are misaligned and need to be removed. Tooth and tooth between the new pairing, and then tighten the screw to install it, if you don't know the mechanical principle, only ask someone to come to repair. But there is no need to change the locks.

First of all, rule out where the damage is. Try it with the key first, to see if the deadbolt can rebound (if the key has nothing to do with the rebound deadbolt, then go directly to the next step), if the key rebounds is not a lock cylinder problem, on the contrary, a trace of twisting can not move, it can be a lock cylinder problem, if the twist half of the situation does not move, it may be a problem with the mechanical structure of the lock cylinder lock body.

Second, if you don't rebound to try the handle, both sides of the handle have to try, to see if the handle is pressed down normally, if the handle is pressed down normally, the deadbolt does not rebound, it is a problem with the lock body. This necessitates the replacement of the door lock.

Third, the problem of installation, caused by the installation and commissioning is not in place. If it is within the warranty period, please ask the installer to debug.

Fourthly, after the installation of the anti-theft door, the door leaf and the door frame are impacted in the case of anti-locking, resulting in the deformation of the door lock. If you have changed the door lock, you should consider whether the installation position of the lock body or the heaven and earth lock rod inside the door leaf are also deformed.

The significance of the use of the security door].

1. The anti-theft door is equipped with an anti-theft lock, which can resist abnormal opening under certain conditions within a certain period of time, and has a certain safety protection performance and meets the corresponding anti-theft security level.

2. The full name of the anti-theft door is "anti-theft security door". It combines anti-theft and security performance. According to the provisions of the "General Technical Conditions for Anti-theft Security Doors", qualified anti-theft doors cannot be pried open within 15 minutes by using ordinary hand tools such as chisels, screwdrivers, crowbars and portable power tools such as hand drills, or open an opening of 615 square millimeters on the door leaf, or open an opening of 38 square millimeters in a semicircle of 150 square millimeters of locking points.

3. And the locks used on the anti-theft door must be a special lock for the anti-theft door with anti-drilling function that has been tested and qualified by the testing center of the Ministry of Public Security. The anti-theft door can be made of different materials, but only the door that meets the standard test and receives the safety product production certificate can be called an anti-theft door.

4. According to the anti-theft security level, it is divided into 4 levels, which are A, B, C, and D from high to low, decreasing in turn.

Generally, because the handle on the inside of the house is used frequently, the rotation stress point of the square lock rod inside is concentrated in one place for a long time, resulting in wear and deformation, and the solution is very simple, turn the lock rod around and install it.

Lock lubrication requires special, low-viscosity synthetic lubricants.

Most of the well-known lock factories such as Escola use fully synthetic lock lubricants from Hotolube or Kluber. Fully synthetic base oil production, clear and transparent, colorless and odorless, low temperature resistance, no dust. Tao is full of 30 ml needle-nosed small oil bottles, drop a few drops, easy to use.

The service interval is six months.

Mineral oil should not be used because it is highly viscous and tends to get dirty. It is also not suitable to use pencil end or black graphite lubrication, which cannot lubricate the internal parts, and there will be heavy metal and color pollution.

There are two situations in this way, one is the problem of installation, which is caused by the installation and debugging in place; Second, after the installation of the anti-theft door, the door leaf and the door frame are impacted in the case of anti-locking, resulting in the deformation of the door lock.

If you have changed the door lock, you should consider whether the installation position of the lock body or the heaven and earth lock rod inside the door leaf are also deformed.

In short, if you don't charge money during the warranty period, ask someone to repair it again.

The "above" of the door and the "top" should still be... There's one more below, you take a picture of the top two, and the bottom of it yourself, touch it with your hand, and see, are you home? It's actually quite ...

This problem must have arisen before.

The anti-theft door lock tongue can not go back, and the small tongue of the anti-theft door lock at home can not be completely returned, leaving a little head, so it is very difficult to open the door.

First of all, you can choose to dial the screws back, generally because of external force caused the door lock to not open the line of dust, perhaps because of the disconnection of the deadbolt inside, or the deadbolt distorted shape, the screws that fix the deadbolt fell off, resulting in the door stuck, so it can't be screwed, and it can't be opened. The solution is to find the deadbolt and pull the detached screws back from the crack in the door. Secondly, there is a foreign object stuck in the door lock, and it cannot be inserted with a key or finger, and it is difficult to twist it even if it is inserted, so in this case, it is necessary to find a way to twist the door lock.

First, determine whether the door is open inside or outward, and pull or push it in the direction it opens. Then you need a knife, the sharp and thin kind of knife, the sharper the tip of the knife, the better, the door outside the door, the middle part that can be contracted is called the lock shaft, the lock shaft should not be in contact with the lock groove, reduce friction, in the gap between the sharp knife pierced into the lock groove, resist the lock shaft, force in the free direction of the lock shaft, maybe once or twice can not be opened, or still have to try a few more times. Additional Information:

Precautions for daily use of locks: When opening the door, always push the door towards the door frame very hard, so it is not good to lock multiple doors. After opening the door, you should rotate the handle to lock the deadbolt tightly, and then release the hand after combining the door frame, in short, to avoid serious collision of the door lock, otherwise it will shorten its life.

When opening and closing the door, the lock body must be turned, and it will become inflexible after a long time. Therefore, it is necessary to ensure that there is lubricant on the rotating part of the lock body to reduce the wear and tear of the lock body and prolong the service life. In order to ensure the safety of the lock, it is best to check whether the lock pegs are loose frequently.

In addition to the lock body often rotates, the lock cylinder is also often in contact with a place, the file for a long time, the key will not be smooth in the process of pulling out the brother skillfully, therefore, you need to add some items that can lubricate it for the lock cylinder, of course, the lock cylinder is absolutely not able to add lubricants or some oil substances.