Lock core common sense

1. How to change the knowledge of anti-theft door lock core

Convenient disassembly of lock core: Tool: Phillips screwdriver.

1. Disassembly sequence of lock core: 1. Remove the inner and outer handle panels: the screws are on the handle panels of the house, one above and one below. 2. Remove the inner and outer lock cylinder covers: the screws are on the lock cylinder covers in the house, that is, the left and right sides of the key.

3. Remove the lock cylinder positioning screw: the screw is on the side of the door, in the middle of the lock tongue, and is the same height as the lock cylinder. The thickest is.

4. At this time, the old lock cylinder can be removed: the old lock cylinder can be replaced just like the new lock cylinder. Second, install a new lock cylinder: the order is the opposite of disassembly, and several points should be noted: 1. Before installing the new lock cylinder, add a small amount of lock cylinder special lubricant to the new lock cylinder.

Turn the key several times. 2. Lock core positioning screw must be tightened to prevent the screw from loosening, and then open the door.

3. Don't screw the lock cylinder cover too tightly, so as not to be too exciting and difficult to unlock. 4. When installing the inner handle panel, there is a safety pin below, which should be inserted into the corresponding safety pin hole.

Suggestion: try to use super B lock core (there is a snake groove on the key). The price of Taobao Super Class B lock core is 70- 100 yuan.

If you find a professional repairman to replace it, it's usually 200 yuan. Changing the lock yourself is economical and safe, which is the first choice for working class.

Rich people go to repairmen, they also want to live! They want to change careers, which is terrible.

2. What are the precautions for replacing the lock core of the security door?

1, replace the lock core of the security door. It should be noted that the size of the lock core of the door is measured, and then buy a lock core with the same size for replacement.

It is a very troublesome thing that the newly bought lock cylinder can't be installed until the size is ready. 2. When buying lock cores, there are many kinds. Be sure to buy a lock core with better anti-theft performance.

Just to be on the safe side, buy a better lock cylinder. After measuring the size of the lock core of the security door, buy a lock core with the same size to replace it, otherwise it will be useless to buy it too big.

3. To improve the security level of the lock, it is only necessary to replace the lock core, which can be disassembled by itself, and a higher-end lock core can be purchased according to the specifications and models of the disassembled lock core. In general, a regular security door can replace the lock core without replacing the whole door or lock.

3. How to change the knowledge of anti-theft door lock core

The lock cylinder is easy to disassemble:

Tool: Phillips screwdriver.

First, the sequence of removing the lock cylinder:

1. Remove the inner and outer handle panels: the screws are on the handle panels of the house, one above and one below.

2. Remove the inner and outer lock cylinder covers: the screws are on the lock cylinder covers in the house, that is, the left and right sides of the key.

3. Remove the lock cylinder positioning screw: the screw is on the side of the door, in the middle of the lock tongue, and is the same height as the lock cylinder. The thickest is.

4. At this time, the old lock cylinder can be removed: the old lock cylinder can be replaced just like the new lock cylinder.

Secondly, install a new lock cylinder:

The sequence is opposite to disassembly, and several points should be noted:

1. Before installing a new lock cylinder, add a small amount of lock cylinder lubricant. Turn the key several times.

2. Lock core positioning screw must be tightened to prevent the screw from loosening, and then open the door.

3. Don't screw the lock cylinder cover too tightly, so as not to be too exciting and difficult to unlock.

4. When installing the inner handle panel, there is a safety pin below, which should be inserted into the corresponding safety pin hole.

Suggestion: try to use super B lock core (there is a snake groove on the key).

The price of Taobao Super Class B lock core is 70- 100 yuan. If you find a professional repairman to replace it, it's usually 200 yuan.

Changing the lock yourself is economical and safe, which is the first choice for working class.

Rich people go to repairmen, they also want to live! They want to change careers, which is terrible.

4. How to identify and select the lock cylinder?

First, how to choose the lock core: most people buy locks only by looking at the shape, and feel that it is good to be big.

Actually, it depends on whether the lock core is worth buying. As long as you pay attention, no matter what kind of domestic lock you buy, the lock core is generally copper, and the characteristic of copper is soft. You can easily destroy the copper lock core with an electric drill and concentrated acid.

There are also differences in the types of lock cores. At present, the most commonly used lock core is European lock core, in addition to American threaded lock core and fireproof lock core, the latter two are more secure. American lock core is used for high-grade door locks with good quality and high safety. The fire-proof door lock adopts fire-proof lock core, which can withstand 975 degrees high temperature 1.5 hours, and belongs to the special door lock enforced by the state. "The lock core can also be identified by the number of rows of pins. In general, multi-row pin locks are better than single-row pin locks, and multi-row invisible pin locks are better than ordinary multi-row pin locks. "

The lock repair master told the author that most manufacturers in the market produce Class A locks because the cost of Class B locks is much higher than that of Class A locks. Citizens can check the keys of their security doors. If it is a single row of marbles, the security door is likely to be equipped with a class A lock core.

If citizens feel unsafe, they can consider replacing the super B-class lock core to improve the overall anti-theft performance of the security door. Usually, the safety factor of this level of lock core is already very high.

In addition to the lock core, there are also good or bad hardware accessories. "The materials are generally aluminum alloy, stainless steel and copper, of which aluminum alloy is slightly worse, copper is the best, but the price of locks is also the highest.

Importantly, even if the same copper is used, the material of the lock is very different, which is difficult for consumers to distinguish. "The salesperson said that the only thing that consumers can distinguish is the experience. Qualified locks have fine workmanship, and unqualified products are rough. The qualified lock has a clear sound when it is opened, but the unqualified lock often has scratches on its surface, the key is inserted loosely, and the opening sound is dull.

These are all little knowledge worth collecting. Second, what are the purchasing skills? A good lock core mainly depends on the accuracy of its content manufacturing. The more precise, the better the quality and the stronger the anti-theft performance; Conversely, the lower the accuracy of the lock core, the worse the quality.

Also, the content structure of the lock core is either complicated or good. In fact, the complex internal structure not only does not improve the anti-theft function, but also increases the failure rate. Therefore, the accuracy of the lock core must be carefully studied.

The safest lock cylinder has been upgraded to Class B and Super Class B. It is best to choose Super Class B when purchasing. In the past, buying a lock depends on the number of key teeth to judge the quality of the lock core, mainly depending on the structure of the lock core. The side column structure of blades is often much better than the traditional marble structure. When unlocking, it is best to consult a professional teacher first, and then choose according to the situation. Weigh the lock by the catty and see the lock core by the weight.

The heavier the weight, the better the quality of the lock core, and the more beads in the lock core, the better the anti-theft function; Choose the lock core to see the color, and look at the workmanship than the color. The lock core with good quality is electroplated, with smooth surface and bright color.

Among them, the dark yellow is copper core, which is relatively strong and has good anti-theft performance. The lock core is dull in color, the zinc alloy is gray and blistered, and the anti-theft performance is average. When the key rotates and is inserted into the lock core, it is stuck, and the anti-theft performance is poor. After the key is half inserted, rotate it clockwise or counterclockwise by 5 to 7 components, and continue to press the key into the lock. A stuck key indicates that the lock core has poor anti-theft performance, and the lock core has good anti-theft effect when it rotates smoothly. Although it looks a bit cumbersome, it is really effective for testing lock cores.

There are several grades of lock cores, and the anti-theft grade and price are constantly strengthened according to their rising grades. Of course, if the door core is selected, the safety will be more guaranteed. If you buy it, you can select it according to the number of marble rows and the quality of hardware accessories.

In addition to the appearance, we need to identify, but also need us to hold the key to feel the role of the lock.

5. What are the purchasing skills of lock core?

Buying a lock depends on the teeth of the key.

The more teeth, the deeper the teeth, the more complicated the arrangement, the more difficult it is to open, and the better the anti-theft performance. Weigh the lock by the catty and see the lock core by the weight.

The heavier the weight, the better the quality of the lock core, and the more beads in the lock core, the better the anti-theft function. Choose the lock core to see the color, and look at the workmanship than the color.

The lock core with good quality is electroplated, with smooth surface and bright color. Among them, the dark yellow is copper core, which is relatively strong and has good anti-theft performance. The lock core is dull in color, and the zinc alloy with bubbles is gray in color, so the anti-theft performance is average.

When the key rotates and is inserted into the lock core, it is stuck, and the anti-theft performance is poor. After the key is half inserted, rotate it clockwise or counterclockwise by 5 to 7 components, and continue to press the key into the lock. A stuck key indicates that the lock core has poor anti-theft performance, and the lock core has good anti-theft effect when it rotates smoothly.

6. How much does Luke know about the security of smart locks?

In-and-out real-time inspection, the highest proportion of theft is caused by negligent forgetting to lock the door or leaving the door open. According to police data, burglary from the main entrance accounts for 57%.

Therefore, it is necessary to check whether the doors and windows are closed in real time, and check in real time when entering and leaving the gate to prevent criminals from entering. Get into the good habit of locking. After entering the door, be sure to lock the door and cultivate the good habit of locking it at any time.

Don't open the door to strangers easily. If you meet a stranger visiting, don't open the door easily before confirming the identity of the other person, especially when the child is at home by himself. At the end of the year, there are also many lawless elements disguised as property and maintenance workers. Remember to verify their identities accurately.

Renting users change locks in time. For renting partners, it is best to change the lock before moving into a new home. Don't be afraid of trouble. It can not only better protect their own safety, but also ensure privacy.

It is important not to let others in and out at will. Try to choose a class C lock core. According to the safety standard grade of lock core, the highest safety grade is C, followed by B and finally A. ..

At present, most mechanical lock cores on the market are still in Grade A, and the anti-lock technology and the ability to prevent violent opening are relatively weak, and criminals can easily open them in just over ten seconds. Therefore, users can choose the C-class with the highest security when choosing the lock cylinder.

With the popularity of smart security products, smart devices such as smart door locks, smart cat eyes and smart cameras have gradually entered thousands of households, greatly improving the safety factor. For example, some smart door lock products, because of the alarm and remote viewing functions, users can know whether the door is locked in time, and they will also receive an alarm prompt when the door lock is pried open; Smart cat's eye allows users to view the status of the door remotely, and strangers will give a warning if they stay too long; Smart cameras can record images around houses in time. In short, with the help of intelligent security products, the safety factor of houses can be greatly improved.

Check the status of the door in real time. Get into the habit of checking whether the door is closed when you go in or out. When you are not at home, you can remotely check the door lock status through the APP. Or you can monitor the dynamics of your door in real time through the smart cat's eye. If suspicious behavior is detected, be sure to pay more attention and call the police if necessary. Passwords are not easy to leak. For smart door lock users, whether it is a one-time password, a periodic password or a permanent password, don't easily disclose it to strangers.

Once you notice strangers peeping around, you can use a virtual password as a cover. If someone is following you, don't panic. You can enter a specific fingerprint in advance, unlock the lock with a specific fingerprint, and the system will send the danger to the emergency contact in time.

In addition, develop the habit of changing passwords regularly to prevent the possibility of being stolen. Users who unlock the smart door lock when entering the house must unlock it in time after entering the house. In addition to unlocking the lock, remember to unlock the child lock switch to prevent the cat eye from pressing the handle to open the door.

Choosing a small black box to pry the lock with electromagnetic protection smart lock, also known as Tesla ring to pry the lock, has become another major safety hazard of smart door locks. In view of the unlocking behavior of Tesla circle, users are advised to look for the identification qualification of public security departments or related industries when purchasing locks, and change the initial password as soon as possible when using them. At the same time, we should pay attention to whether the product has electromagnetic protection and can resist the unlocking of Tesla coil.

7. How to choose the lock core of anti-theft door lock?

How to choose an excellent anti-theft door lock in the anti-theft door market with mixed quality? This requires consumers to have the corresponding common sense of buying, not to be confused by the ultra-low price of inferior anti-theft door locks, carefully check the performance of anti-theft door locks and choose a "safety lock".

When choosing lock products, we should carefully and comprehensively check whether its use function is flexible and reliable, whether the electroplating layer is fine and smooth, whether the color is bright and whether there is rust. Compare two locks of the same model to see if there is any difference, especially some high-grade locks, which should be inspected from inside to outside.

For high-grade locks, check the lock head, lock body, handle and other places for wrinkles or damage. Generally speaking, locks with good quality are flexible to use and have a long service life. Pay attention to check whether the relevant supporting facilities are complete, and carefully observe the appearance and quality problems of the products, especially whether the colors are uniform.

8. How to maintain the anti-theft lock cylinder?

1. The transmission part of the lock body should always keep lubricant to keep its transmission smooth and prolong its service life.

It is recommended to check once every six months or once a year to check whether the fastening screws are loose and ensure fastening. 2. When the lock head is used, Jamlom graphite powder or pencil powder can be applied to the lock core groove regularly (half a year or one year) or when the key insertion and removal is not smooth, so as to ensure the smooth key insertion and removal.

However, it is forbidden to add any other oil for lubrication, so as to avoid the grease sticking to the marble spring, which will make the lock unable to turn and open. 3. Always check the fit clearance between lock body and lock plate, whether the height of lock tongue and lock plate hole is appropriate, and the best fit clearance between door and frame is1.5mm-2.5mm. ..

If any change is found, adjust the position of the hinge or lock plate on the door. At the same time, pay attention to the weather (wet in spring and dry in winter), so as to ensure the reasonable gap between the door and the frame, the lock body and the lock plate and ensure the smooth use of the lock.