China Consumers Association issued an appeal through the website, and consumers with conditions should upgrade the Class A anti-theft lock to the Class B anti-theft lock as soon as possible. This reminded Mr. Zhang of Changchun citizen of one thing. "Neighbors use their own keys to open the door of my house. Does the lock not burglar?" Yesterday afternoon, the reporter visited and found that some residents of the old community had a cross lock and a word. Lock, "These are all A-class locks, the anti-theft performance is very poor." 96228 convenience service platform unlocked master Xu Junchen, used 51 seconds to open the security door cross lock.
Neighbors open their own security door
Mr. Zhang lives in an old neighborhood of Yatai Street and the Prosperous Road Intersection. In April this year, his mother and daughter were at home. "Suddenly someone opened the door with a key. The other person came in and saw someone at home, and hurriedly quit. My mother chased it up." Mr. Zhang said that under the mother's questioning, the other party said that he lived upstairs, and really used the key in his hand to open the door upstairs, and confirmed that it was really a neighbor upstairs.
The next day, Mr. Zhang replaced the door lock with a more advanced Class B lock. "It took more than 200 yuan, and the ordinary lock will cost tens of dollars." He showed the door key, the front of the key has a double row of marble slots, and the back has a row of curved and irregular lines, obviously more than the general key. "advanced".
The neighbor was stolen and he changed the lock.
On the afternoon of December 3, the reporter visited the various communities in Changchun City on the security issue of locks.
In a new residential area near the intersection of Ulsan Road and Xingfu Street, the security door provided by the developer is the crescent lock (Class A lock). Mr. Lu, the resident, just invited the locksmith and is replacing the lock.
"There was a burglary in the community before, so I feel that the old-fashioned door locks are not reliable." Mr. Lu said that he also saw a post on the Internet that A-level door locks are easily cracked.
There are more than ten kinds of door locks in the suitcase of Yang Shifu, the lock company, which sells for between 220 yuan and 500 yuan. "The vast majority of communities in Changchun are A-class locks, that is, old-fashioned word locks or cross-flower locks. This kind of lock is basically the same as that of the professional. It can be opened in a minute or two by using the unlocking tool. Master Yang said that the door locks he brought were super B-class or C-class door locks, priced from 220 yuan. The company also has thousands of door locks, which are more complicated.
“Is there a Class B lock?†asked Mr. Lu. Master Yang said that according to state regulations, in addition to Class A locks, more advanced locks are called Class B locks. "But with the continuous improvement of unlocking technology, the so-called Class B locks are now known as Class A locks, Super B. Or the C-class lock is called by the industry itself. These two are the best anti-theft effects."
Mr. Lu chose a 500-yuan C-class door lock. "This kind of lock is equipped with 6 keys. This kind of key can't be matched in the market. It must be stored in a few friends' homes." Master Yang reminded that to improve the safety level of the lock, only the lock cylinder needs to be replaced. Consumers can Remove the lock cylinder and purchase a higher-level lock cylinder according to the specifications of the lock cylinder. Regular lock doors can be replaced with lock cylinders, eliminating the need to replace the entire door and lock.
The reporter interviewed 10 households randomly, 7 of whom said that they used the door lock provided by the developer, and 4 people did not know that the door lock was also graded. "Even if you change the lock, if the master estimates it can be opened..." said Mr. Liu.
In another neighborhood nearby, 10 households were also investigated. Only Mr. Sun changed to a door lock higher than Class A because his family was stolen the previous year. "When I got home, I found that the money in the drawer was gone. There were footprints on the floor, but the door was intact. My home was on the 6th floor. It was impossible to climb the window. The police said that the thief used technical means to open the door. So, I replaced the door lock, the person who said the lock is a super B-class lock." Mr. Sun said.
experiment
Class A anti-theft door lock is opened within 1 minute
Yesterday, Master Xu Junchen of the 96128 convenience service platform demonstrated the unlocking process of the A-level lock. He has been engaged in this work for more than six years. The security door on the third floor of the newspaper was installed with a cross lock. Master Xu first took out a set of unlocking tools and reached into the keyhole. Both hands tried to smash back and forth twice, suddenly stopped, and then he found a Red rope, use the tool to put the red rope into the keyhole, insert the key mold, gently turn, the door lock pops open, the whole time is 51 seconds.
The fifth floor of the newspaper is a one-word lock security door, and the key is a double-sided groove. Master Xu first reached into two separate tools, hands tested and turned. When he heard the sound change, he took out the rubber band, wrapped one of the tools, and gently pulled it. He only heard the "beep" in the door. He was light. Pressing the handle, the security door is opened, and it takes 59 seconds.
Master Xu said that there is a tin foil unlocking method for this kind of lock. It is easier to open with that tool. Many thieves will use it. "The safety of this kind of lock is too low. Nowadays, many residents have replaced this kind of lock. â€
Look at the key lock
Class A lock
At present, the A-level anti-theft lock key on the market mainly has a word key and a cross key. The internal structure of the A-class lock cylinder is simple, limited to the change of the marble, and the marble groove is small and shallow. The anti-technical opening time is extremely high within 1 minute. The marble structure is a single row of marbles or a cross lock.
According to the Ministry of Public Security GAT73-94 "mechanical anti-theft lock" regulations, the anti-theft lock is divided into two types, the general protection level lock is A-class, the A-level lock anti-technical unlocking time is not less than 1 minute, and the destructive opening time is prevented from not less than 15 minute.
Class B lock
The B-class lock key is a flat-panel key with a double-row marble slot. The difference with the A-class lock is that there is a row of curved and irregular lines on the key surface. The main types of lock cylinders are 3 types, computer double-row lock core, double-row crescent lock core, double-sided vane lock core. The anti-technical opening time is 5 minutes, and the mutual opening rate is high. With a strong twist tool, the lock cylinder can be opened in 1 minute.
According to the provisions of the Ministry of Public Security GAT73-94 "Mechanical Anti-theft Lock", the lock of the advanced protection level is Class B, and the B-level anti-theft lock prevents the technology from unlocking for not less than 5 minutes, preventing the impact opening time from being less than 30 minutes.
Super B lock
The shape of the key is single-sided blade inner milling slot or outer milling slot key. The lock cylinder type is side cylinder lock core; it can't be opened by the Ministry of Public Security for 270 minutes, and the regional mutual opening rate is close to zero (one million). . The structure of the marble is locked by the double row of blades and the V-shaped side column; if the lock cylinder is opened by a strong twisting tool, the internal core of the lock cylinder is broken, and the self-explosion is locked, which may result in failure to open.
It is understood that the super-class B lock and C-class lock in the market are the concept of enterprise self-determination.
Lock selection
Relatively good weight
Master Xu said that when choosing a lock, it is necessary to weigh the weight, the weight is relatively better, the key is thicker, and there are two rows of serpentine grooves. The more "tooth" on the key, the more complicated the arrangement. The corresponding opening probability is smaller, and the anti-theft performance is better.
In terms of material, the lock is best in steel. Can also choose from color, workmanship, good quality lock core is generally electroplated, the surface of the lock core is smooth, the color is dark yellow is the copper core, relatively strong. "No matter which kind of lock, there is one thing to note. When you are away from home, you must lock the door. If there is no anti-lock, which level of lock will not work."
maintenance
The key is inserted and removed, and the pencil is not used.
After using the security door of many residents' homes for a period of time, there is some stagnation when unlocking, and it is harmful to close the door with force.
Master Xu gave a small way to maintain the lock with only one pencil. When the key is not inserted smoothly, when opening the bun, do not use oil or other lubricated liquids. Just pencil and pencil. Take a few strokes on the key and try to unlock it a few times. It should also be noted that if the key is bent or deformed by external force, the door lock cannot be opened with the deformed key, and the door lock is easily damaged.
remind
Timely cleaning of special symbols at the door
The police of the Changchun Municipal Public Security Bureau said that many of the burglary burglaries were unlocked by technology, and they would find a room for no one. Therefore, the public should pay attention to clearing the strange symbols appearing at the door of the house, which may be left by the thief. In addition, if the unit door is damaged, it should be repaired in time, and the thief usually does not unlock the unit door technology. The home security door should use a high-level door lock. At the same time, the police said that changing locks is only one aspect of theft prevention. Other anti-theft measures are equally important. Try not to leave a lot of cash, gold and silver jewelry at home; before going to sleep, before going to sleep at night, before going to work during the day, you must close the doors and windows and lock the door.
New Culture News reporter Zhao Chungang Wang Yue
Typical Case
Not accustomed to anti-locking security door and being thieves
The police recommend choosing a B-class lock cylinder
New Culture Newsletter (intern reporter Cao Yiqun) "I heard a sound, immediately got out of bed, saw the door in the house open, the security door was not locked, the bag inside the house also ran to the hall." Recalling the time Scene, Ms. Kong has a lingering heart.
At 3 o'clock in the morning on December 2, Ms. Kong, who lives in the second phase of Kangxin Garden in Yuquan Road, was thieves. The 800 yuan in cash was stolen. What you can't think of is that this is the second time the thief has visited Ms. Kong. And less than 20 days before and after.
Ms. Kong has not had the habit of anti-locking doors for many years. Basically, people only lock one door at home. On the day of the theft, the husband was on duty in the unit. I didn’t expect the thief to be so daring, and some people in the house dared to come. "When I saw the door open, I knew that I was thieves. I immediately put on my clothes and chased them out. I saw a piece of clothes on the second floor of the platform. It is estimated that the thief saw me turning over and immediately ran away. I chased it out. I heard the footsteps before leaving the clothes."
Ms. Kong found that the wallet of the purse was opened, and the 800 yuan of cash in the bag was gone. When the police reported the case, the police watched the community monitoring, the monitoring was blurred, and did not see the appearance of the thief.
Yesterday, the reporter learned from the Longquan Police Station of Tonghua City Dongchang Public Security Bureau that the case has been filed for investigation. The Korean police officer said: "It is a very bad habit to not lock the security door. After the abnormality in the home, the lock core should be replaced in time. Try to choose the B-class lock core. Don't hold the lucky one to provide the criminals with the opportunity."
The Korean police officer told the reporter that he would give a reminder to the masses in combination with the characteristics of many cases of entering the room. He said that installing a walkie-talkie in a residential building can prevent random personnel from entering and leaving the criminals outside the building. Residents of bungalows should replace the padlocks and strike locks with anti-shackles, repair the doors that have been in disrepair for a long time, or replace them with anti-theft locks, effectively reducing the incidence of burglary. Before leaving home, remember to close the doors and windows. Inserting small advertisements on the residents' door has become one of the means by which criminals step on the road. The thieves use this to judge whether there are any people in the family and choose the opportunity to commit crimes. In the neighborhood, the neighbors’ homes were found with small advertisements or unidentified symbols, and they were promptly cleared from each other and did not give criminals a chance to commit crimes.
Editor in charge: Liu Changqi
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