The working principle of common lock cylinder:
1 The key is the bullet in the lock cylinder, it has long and short, there is a row of small holes on the lock cylinder, each small hole is installed with a bullet, after the key is put into the lock cylinder, the amount of bullets exposed in each hole is just the same as the appearance of the lock cylinder, not too high and not too low,
2 At this time, the lock cylinder is installed into the lock, and then by the corresponding holes were installed into a bullet and a small spring, sealing the hole, the lock is done. Seal the holes and the lock is ready.
3 If you change a key, the depth of the key on the mouth is not the same, just now on the cylinder of the bullet height is not the same, so, the cylinder is stuck by the bullet and can not be turned, played the role of insurance ......
Anatomical picture:
Expanded information:
Lock cylinder adopts a number of anti-theft technology, a variety of shaped anti-pulling bullet, to eliminate the opening of the technology, with the unique design of bullet and blade structure, has a very high level of anti-theft. With the unique design of spring and blade structure, it has high security performance against technical opening. The lock gallbladder is equipped with precision number bullet and shaped bullet structure, in the technical opening of the number bullet and shaped bullet must be pulled at the same time under the circumstances will automatically lock, so that the technical opening without success.
The lock cylinder uses multiple combinations of shaped marbles, which can be programmed with up to billions of key numbers, thus realizing zero inter-opening in the area (1 in 16 million). The lock cylinder adds a lateral inward pressure type side column pin device, greatly improving the ability to prevent violent strong twisting.
The national standard for anti-theft locks is divided into "ordinary protection level" and "advanced protection level", the former with the letter "A", the latter with the letter "B". The former with the letter "A", the latter with the letter "B". The so-called super B and C level locks on the market are defined by some merchants, strictly speaking, should be counted as B level locks.
1.A lock cylinder, to prevent technical unlocking time of not less than 1 minute, to prevent destructive opening time of not less than 15 minutes.
A lock cylinder is an old-fashioned lock cylinder, the key is a cross flat type or crescent type with a convex key slot key, single-sided or double-sided with a row of concave key groove, this type of key thieves with tinfoil can be opened within a few seconds, if your home is still using this key to hurry up and change the A lock cylinder has been unable to prevent thieves.
2. B-grade lock cylinder, to prevent technical unlocking time of not less than 5 minutes, to prevent the impact of opening time of not less than 30 minutes.
B level lock cylinder key for flat or crescent type, B level lock key is more complex than the A level key, key slot for single-sided or double-sided with two rows of concave or cylindrical multi-point concave key hole.
3. Super B lock cylinder, technical opening time of more than 270 minutes.
Super B lock cylinder key for the flat type, key slot for single or double-sided with two rows of concave plus S-shaped, or inside and outside the double serpentine internal milling groove structure. It is the most complicated lock cylinder, but also the most secure lock cylinder, tool opening time in more than 270 minutes or even can not be opened.
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