- Overview
The complete door lock system consists of mortise lock case, cylinder, level handle.
The cylinder is the most important part for ensure the security.
Insert the key into the cylinder – turn on.
For the wrong key, the upper and lower marbles cannot form a straight separation line, and the lock cylinder cannot be rotated and cannot be opened.
For the right key, the upper and lower marbles form a straight line dividing line, the lock cylinder can be rotated and can be opened.
The difference of the lock cylinder is directly reflected in the shape of the key
The following are some of the most commonly used marble lock cylinders in daily life
No matter what kind of key it is, people number different key-bits and arrange and combine them according to certain rules, which becomes the key-bits code; also known as key code (referred to as key code)
Although there are thousands of key codes, since codes are used over and over again, there will always be repetitions. Sometimes two identical keys are encountered; like two people with the same name and last name.
This is allowed, but must meet the appropriate standards. The standard term is called the key amount, usually the number of different key bit.
2. Cylinder for architect
It is mostly used in real estate decoration projects. The contractor can use one key to open multiple lock cylinders. After the user activates the user key to unlock the lock, the contractor’s key will become invalid.
The 6 moverable pin lock cylinder can open 300 lock cylinders with one key.
The principle of Cylinder for architect.
3. The principle of A+B key lock cylinder
The principle of the A+B key lock cylinder is the same as that of the “Cylinder for architect”, the B key is activated, the A key invalid
4. The principle of master key system
Presidential lock (master key system): refers to a security system, which is mostly used in the places for hierarchical management like hotel.
The master key system is a key management system with hierarchical management according to authority. Within the scope of a lock, one key can be used to open all doors within the scope of authority according to the authority. The first level is the highest authority, which belongs to the presidential key, which can open all locks in the entire system. The second level belongs to the second highest authority. The key can open all the locks in the second and third levels below, and the third level Each lock is an independent key, and only the lock that matches it can be opened.
Cross-opening means that in the same level of system, keys of different groups can open another group of locks: for example, the key of the office building in area B can open the access lock in area A; : Keys of different levels open another level of locks.
