“I just read the report in the unit. When I went home at night, I found that the door lock could not be opened.†Ms. Li, who lives near Dongguanzheng Street, came home from work at 6 pm yesterday and found that the door lock could not be opened normally. When the lock came, the locksmith told her that the door lock was opened by the technology. "The door lock is actually not broken, but there is tin foil stuffed in." After opening the door lock, Ms. Li found a laptop in the house and 5,000 yuan. Cash was stolen.
Ms. Li said that she had replaced the lock once a year ago. "At that time, the locksmith introduced me to the Super B lock. I didn't expect it to be opened with tin foil."
Li Guoding, an expert in locks , said that there are dozens of anti-theft locks on the market. They are classified into A-class locks and B-class locks according to the anti-theft level. The one-word lock, cross lock, flat-mouth AB lock and semi-circular AB lock are often used in the old community. Locks for Class A locks, three-sided mini locks, four-dimensional locks, single-row curves, single-row pulleys, double-row curves, etc. are called Class B locks. Some merchants also refer to these locks as “Super B-class†locks. Li Guoding Introduction, the dozens of locks commonly used by the public, professional unlockers can be "seconds open" through technical means.
Complex key anti-theft effect may not be the best
"Ordinary A-class and B-class anti-theft lock cylinders are mostly marble structure. A few lock cylinders are marbles combined with milling slots, and the anti-theft effect is not good." Li Guoding introduced that the anti-theft lock with the best anti-theft effect on the market is milling. Slot structure lock core, "Citizens can basically judge the lock core structure by key form."
Li Guoding said that the key to the slotted structure lock cylinder is called the "single-sided side column" or "double-sided side column" form. Viewed from the outside, the key is a blade structure and is curved. “It seems to be composed of several curves, but its anti-theft effect is far more than the lock of the key with the groove and the serrated type.†Therefore, the key that looks like a very complicated structure, the anti-theft effect may not be the best.
For the milling slot lock, the "double-sided side column" anti-theft effect is higher than the "single-sided side column", the double-sided side column key has curved lines on both sides, and the single-sided side column key has only one side Curve lines. This type of anti-theft lock requires a long time for technical opening, and it is more difficult to open the double-sided side column shape lock.
Li Guoding suggested that when replacing the lock cylinder, in addition to the regular opening and closing company, the company should also choose the slotted structure lock core and copper material.
At the same time, maintenance of the lock cylinder should be done with a lead core for lubrication. Do not use oil products. "Because the oil enters the lock cylinder, it will increase the load on the lock cylinder after it is contaminated with dust."
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