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Which lock cylinder class is more secure?

2019-07-08 11:34:04

Which lock cylinder class is more secure?

As an emerging product in modern society, smart door locks have won the favor of many home users by virtue of convenience and security. After experiencing multiple technical update iterations, many smart door locks can resist the intrusion of small black boxes, and in the event of violent unlocking, an alarm is issued to maintain the user's family and property security. When purchasing a smart door lock, we can see that the chip of the smart door lock is B or C through the product parameters. What do these levels mean? Which level of smart door lock is safer?

Home users purchase smart door locks mostly to protect the door. As the first safety gate in the house, the safety of the door is crucial. For a door lock, the level of the lock cylinder has an effect on its safety factor. The unlocking methods commonly used by consumers include fingerprint unlocking, Bluetooth unlocking and APP unlocking. These three unlocking methods are more secure than password unlocking and prevent voyeurism. For the sake of safety, when buying smart door locks, it is recommended to start with a brand that has technology research and development. The smart door locks of the big brands not only use the lock cores, but also the relative safety of the after-sales installation.

At present, the classification of the lock cylinder in the market can be described as various, there are A grade, B grade, C grade or even D grade, but also A grade, B grade, super B grade, the main distinguishing condition is A lock The time to prevent technology unlocking needs to be greater than 1 minute; the level B lock needs to be greater than 5 minutes, so for A-class locks or B-level locks, the difference between them is to prevent technical unlocking time, not construction or style.


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 very simple, limited to the change of the marble, and the marble groove is small and shallow. The marble structure is a single row of marbles or a cross lock.

Class B lock: Class B lock key is a flat key, with double row of marble slots. The difference with A grade lock is that there is a row of curved 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 blade lock core.

The difference between Super B and B locks is only the difference in the anti-technical opening time, but the division of the violent unlocking is almost the same, so I have to increase the need for a super B-class lock core. The main difference between the B-class lock cylinder and the super-B-class lock core/C-class lock core is that the anti-technical unlocking time and the mutual opening rate, obviously, the longer the technical unlocking time is required, the lower the mutual opening rate, the higher the safety performance of the lock cylinder. .

Class C lock: The key shape is a single-sided blade inner milling groove, the outer milling slot key or double row + blade form, the lock core type is the side column lock core. 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 with a strong twisting tool, the internal core of the lock cylinder is broken, and the self-explosion is locked, resulting in failure to open.