What is the principle of anti theft magnetic buckles on clothes?

The anti-theft device on the clothes in the supermarket is called the anti-theft magnetic buckle, which has a self-locking mechanism, when a strong magnet is used to attract the steel balls inside the anti-theft magnetic buckle, the self-locking mechanism is automatically unlocked, and then the steel nails can be taken out smoothly.

We buy clothes at the physical store and check out, cashiers.

If a magnet is used to touch the anti-theft magnetic buckle, the steel nail on the anti-theft magnetic buckle will fall out, and if it is not unlocked by the cashier, the customer will take the clothes with the anti-theft magnetic buckle out of the door, then the "anti-loss door" will sound an alarm.

On the goods in the supermarket, there are generally two anti-theft methods, one is a small electronic tag.

Commonly known as soft labels, the appearance is a two-dimensional barcode.

The other is the anti-theft magnetic buckle, commonly known as the hard label, generally used in clothing or expensive wine, the internal structure of the anti-theft magnetic buckle is very simple:

Self-locking principle: there is a groove on the steel nail, when the steel nail is inserted into the anti-theft magnetic buckle, the steel ball inside (generally there are four) will fall into the groove of the steel nail, and at the same time, because of the effect of the spring, the iron ring above, so the steel nail is firmly locked on the anti-theft magnetic buckle, and the harder the external pull of the steel nail will be tighter.

Unlocking principle: When the strong magnet is placed above the anti-theft magnetic buckle, the iron ring and the steel ball are attracted by the strong magnet and move upward, so the steel nail is detached from the self-locking, and it can fall out under the action of gravity, and the anti-theft magnetic buckle can be reused.

In addition, inside the anti-theft magnetic buckle, there is also a capacitor and coil, and the anti-theft device at the door of the supermarket is called the anti-loss door, which can transmit and receive low-frequency electromagnetic waves of a specific frequency.

When the anti-theft magnetic buckle is placed in it, due to the phenomenon of electromagnetic induction.

The coil in the anti-theft magnetic buckle will generate an inductive signal, which will be detected by the anti-loss door, and the anti-loss door will sound an alarm.

Some goods use soft labels, and the anti-theft principle is the same, with special amorphous metal magnetic resonance in soft labels.

The material will be detected by the loss prevention door, and if it is a normal payment for the item, the cashier will use the decoder.

The soft label is demagnetized, so the soft label is invalid and cannot be detected by the loss prevention door, and most of the soft label is disposable and cannot be reused.

Anti-theft magnetic buckle can be a good solution to the problem of theft of items in the store, in the case of anti-theft magnetic buckle self-locking, it is difficult to take out the steel needle by brute force alone, so it is difficult for thieves to take out the goods with anti-theft magnetic buckle.

In fact, the main principle is that this kind of anti-theft magnetic buckle will send a special signal, because it belongs to the kind of system recognition, and it will react when someone touches it.

Generally, the supermarket door will be equipped with a coil, when the magnetic object is close to the coil, the coil will generate a current to trigger the alarm device, emitting a high decibel sound, to achieve the purpose of anti-theft.

It is actually made according to the principle of action of magnet, and its result is obvious, very lightweight.

This kind of buckle is generally used in the spring, iron ball and iron ring, through the spring can be pressed the iron ring, and then the iron ball is pressed, and the iron column will finally be fixed by squeezing the hidden buckle.

The principle is that these magnetic buckles will react with the sensor device on the security door, so they will make a sound immediately when passing through the sensor device.

Its principle is actually electromagnetic induction, there is a magnet in the anti-theft buckle, and the door of the shopping mall will induct the magnet, and if it is sensed, it will make an abnormal sound.

The anti-theft buckle unfastened by the square silver Hu method is as follows:1. Find a magnet.

Unraveling: You can find a magnet to contact with the anti-theft buckle, and then gently shake the anti-theft buckle so that the steel ball inside can contact with the magnet, and then pull out the anti-theft nail. It should be noted that when pulling the nails, you should not use too much force, and you must control the strength to take them out easily.

2. Untie it with a lock pick: Some magnets cannot open the anti-theft buckle because of insufficient magnetic force. At this time, it is necessary to use a special anti-theft lock picker, and then pay attention to whether the anti-theft buckle matches the lock picker when choosing the lock picker, and pay attention to its magnetic force.

The specific steps are roughly the same as method 1, if you encounter a situation that you can't take out, try to knock down the anti-theft buckle, turn a few times, and then pull out the nail.

You can choose your own suitable method according to your own situation, but it is especially important to pay attention to the fact that you cannot use brute force to solve the hail, because this may cause damage to the clothing and affect the appearance of the sail.

The principle of anti-theft magnetic buckle for clothing:

When a magnetic object is brought close to the coil, an electric current is generated in the coil, which strikes the alarm device. Prompted with a high-decibel sound. Achieve the purpose of anti-theft. When the coil is installed at the outlet, it can be checked out directly.

If the thief takes the needle apart and removes the magnet, then the bridge will not ring when he goes out, so that Qi Jihe will not be able to find out when he takes it out. Of course, this is only a means of preventing theft in clothing stores, and it is by no means 100% secure.

Tools needed: needle-nose pliers, refrigerator, rubber bands. Method 1: Use needle-nose forceps.

1. Hold the plastic handle of the label with the cartridge facing up.

2. Clamp one end of the rectangular label with needle-nose pliers.

3. Clamp the other end with a pair of needle-nose pliers.

4. Gently fold the ends down, but don't fold too hard, otherwise the label may break.

5 Keep it down, the nail will come loose during bending until the label pops open automatically.

There is no explanation for the inner oak in question.

The anti-theft buckle is clipped to the garment by means of a steel needle and a buckle seat. The structure of this type of anti-theft buckle is generally composed of coils, steel nails, lock cylinders, plastic shells, etc. The lock cylinder is actually a device composed of iron balls, iron rings, and springs.

The steel nail is made up of a circle of grooves. The steel ball is installed in the round hole position of the cone barrel, and the cone barrel is installed in a metal bowl, and the spring is against the cone barrel (the iron ring in the same picture below). When the nail is inserted from the bottom of the anti-theft buckle, the steel ball in the cone barrel will slide to the groove position of the nail, and the cone barrel (iron ring) will be stuck in the groove under the pressure of the top spring.

Because the metal bowl is tapered, the greater the force of pulling the nail at this time, the tighter the nail is clamped, so it is impossible to untie the anti-theft buckle with brute force.

It is a principle of magnetic induction that prevents people from stealing

This is the same as the sensor door, in order to prevent others from stealing.

There should be a substance in it that is capable of magnetic stripe sensing.

Attract with a magnet on the outside and the inside will loosen.

It's a kind of iron with magnetic induction.

This is a magnet, what can it do.

It's just a magnet, and it will react when you encounter it.

This is a kind of induction, and if you take it, it will be called.

This should be a clever design of the internal structure.

This is a sensor, the door will ring.

1. First hold the anti-theft buckle on the clothes with one hand upward, see the picture below.

2. Then use the other hand to clamp the other end of the anti-theft buckle with needle-nose pliers.

3. Next, use another pair of needle-nose pliers to clamp the other end of the anti-theft buckle.

Test, girl, take the clothes and throw them on the wall a few times, the anti-theft buckle keeps hitting the wall, and then the anti-theft buckle falls off by itself Thanks to the landlord

Go to the mall and ask someone else to get it again, my boyfriend is also shopping in the supermarket, the salesman didn't get the anti-theft magnetic buckle down, and when he came back, he knocked it down with pliers and hammers, and it was a marble that stuck the needle tightly.

If there is a strong magnet at home, you can put the strong magnet on the plastic side and then the nail will be easy to remove, if there is no strong magnetism, you can take a good receipt to the supermarket for the waiter to take it off, remember to bring a good receipt!

The easiest way is to bend the nail head a few more times with wire cutters and it will break, and I just did it myself.

Dedicated tools must be used. Let's go back to the mall.

You go to the mall and find someone to help you get it down