Li Cuiqin and his apprentice unlocked.
The left two are the Class B lock keys and the right two are the Class A lock keys. Jinghua Times reporter Tan Qingshe
Near the Qingming small holiday, many citizens will go out to visit relatives or outings. But have you considered the safety of the door lock before going out? In this issue, the life laboratory randomly selected several kinds of lock cylinders commonly found in the market, and let the senior lock repairman Li Cuiqin conduct experiments. It turns out that with a special tool, the ordinary lock cylinder can be easily opened. In this regard, the China Consumers Association recommends that home security is best for the lock core upgrade.
Experimental basis
â—Ž Experimental location: Yihai Community
â—ŽExperiment time: March 31, 2015
The Ministry of Public Security GAT73-94 "Mechanical Anti-theft Lock" stipulates that the anti-theft lock is divided into ordinary protection level and advanced protection level according to its anti-theft ability. Among them, the lock of the general protection level is indicated by the letter "A", and the lock of the advanced protection level is represented by the letter "B". The A-type anti-theft lock prevents the technical unlocking time from being less than 1 minute, preventing the destructive opening time from being less than 15 minutes; the B-type anti-theft lock prevents the technical unlocking time from being less than 5 minutes, and preventing the impact opening time from being less than 30 minutes.
According to Li Cuiqin, a senior lock repairman, the current A-class lock cylinders generally include traditional one-word locks, cross locks and crescent locks, as well as locks with only one row of marbles in most lock cylinders. Is a class A lock. Class A locks are the key target of thieves. The keys have only one row of card slots and one row of marble holes. They can be opened with special tools such as iron hooks and tin foil.
The reporter randomly purchased a pair of one-shaped lock cylinders and cross-shaped lock cylinders on the market, and installed them on the simulated door frame respectively. Li Cuiqin was responsible for verifying the safety performance of the locks.
Verification 1 A-shaped lock cylinder can be opened for 10 seconds
When verifying the security of the inline lock, the reporter first locks the analog door. Subsequently, Li Cuiqin placed the tin foil on the key model, and after simply pressing it, it was inserted into the lock core hole and then repeatedly shaken. In just 10 seconds, the randomly purchased inline lock cylinder is opened.
Li Cuiqin said that the principle of tin foil opening a common word lock is very simple: "This is equivalent to using the characteristics of tin foil to temporarily 'fit' a key in the keyhole, so the lock is easy to open."
Verify 2 cross lock cylinders open for 15 seconds
Another common lock cylinder is a cross. After the reporter locked the lock, Li Cuiqin took out a special pull-type special tool with a cross-shaped screwdriver and a separable screwdriver, and inserted it into the lock core hole. He rotated the center of the special tool with his left hand, and the right hand with the left hand to test, then stuffed the ordinary plastic cloth into the keyhole, and quickly opened the lock cylinder, the whole process took only 15 seconds.
Li Cuiqin said that because the price of A-class locks is relatively low, most security door manufacturers currently use such locks to configure security doors. "For thieves, this type of lock is virtually useless."
prompt
China Consumers Association recommends that consumers upgrade their lock cylinders
The China Consumers Association has called for the purchase of a secure security door to ensure home safety, and the door lock is the most critical part of the security door.
China Consumers Association pointed out that most consumers currently use A-type locks. With the development of unlocking technology, the safety of these locks has gradually declined. A type lock can be cracked successfully in the hands of thieves for dozens of seconds or even seconds. Especially on holidays, many consumers have no one in the family for a long time, and the risk of burglary is increasing. Therefore, China Consumers Association recommends that consumers upgrade the Type A anti-theft lock to the Type B anti-theft lock as soon as possible.
Generally, the regular security door can be replaced with a lock cylinder, and there is no need to replace the whole door and lock. Consumers should pay attention to the model specifications of the anti-theft lock and replace them one-to-one. Generally, the B-class lock cylinder and the ordinary lock core are uniform in appearance and installation size, but there are also special anti-theft door locks with different specifications. The price of the B-class anti-theft lock core is about 300 yuan, and consumers are advised to buy a regular brand. The spoon material of copper or aluminum-iron alloy is easy to be copied, and the preferred material is steel.
In addition, China Consumers Association pointed out that the national standard only has A-level locks and B-level locks, and there is no Super-B lock and C-level lock. The so-called super B-class lock and C-class lock on the market should be the self-contained concept of the enterprise. (Reporter Shi Zhijun)
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