A, B Kabbah lock, it has AB two keys. It is the key to play the "pit". The depth of the lock pit consists of seven to eight marbles and the like. The difference is the same as the difference in the depth of the flat key. There are also called "Kaba Lock" and "Computer Lock, and also called "Pivot Lock" and "Bai Li Lock". The role of the A and B keys is that when people install the lock, the owner can hand over the A key to the house decorator for them to enter and exit the house door to unlock, so the A key is also called the “renovation keyâ€. When the decoration is completed, the owner does not need the decoration personnel to enter the room. After the owner inserts the B key into the lock hole and turns the lock cylinder one turn (circle), the A key loses the function of unlocking, so the B key is also called the “home key.†". The advantage of the AB key lock is that it can meet the needs of people to decorate the house, avoiding the loss of the door opening key when the decoration is in a mess, or the person who has a bad heart to copy the door open key, etc., may avoid the owner’s Unsafe factors can also avoid the trouble and cost brought about by the lock after the decoration, so it is welcomed by people. Brass Rings,Brass Synchronizer Rings,Automobile Synchronizer Brass Ring ShaoXing Change Auto Synchronizer Ring Co.,Ltd , https://www.sxcjautoparts.com
The difference between A and B keys and the working principle of the lock
1. For the sake of easy distinction between the manufacturers, the 6 B keys are packaged in a transparent hard case, and the 2 A keys are hung outside. Some A and B keys have different colors. The 2 A keys are yellow and the 6 B keys are white. There are instructions on the back of the 6-B key package. The owner should read it clearly before use, and recognize the use of the two keys. Do not confuse them to avoid improper use of the two keys.
2. If A and B keys are carefully observed, experienced people will find that one of the seven pits above the key is different (the average person does not pay much attention to it, thinks that there are two keys, nothing the difference). The deepest pit at a certain position on the A key, the shallowest (even flat, no pit) corresponding to this position on the B key, generally the position of the 7th or 1st marble. Speaking of the people I want to be here, I must have an idea in my heart, so I must remind the homeowner that the A key must be taken back after use and properly preserved or destroyed.
3. The marble structure in the marble chamber corresponding to the different depths of the A and B keys is special. A steel ball of φ1mm is placed between the upper and lower marbles. When using the A key, the height of the lower marble in the marble chamber plus the height of the small steel ball is just flush with the lock core, so the lock can be unlocked with the A key; when the B key is used, the small steel ball can be used. The top lock cylinder, that is to say, the lower bead and the lock core are flush, so the B key can also be twisted and unlocked (this principle is the same as the sub-key system), after the lock core is rotated by a certain angle, The small steel ball will be subjected to the action of the upper spring and fall into the blind hole that was previously designed on the lock core (this is different from the key system of the child). Some people call this small blind hole a trap, which is very appropriate. . The diameter of this blind hole is larger than that of the small steel ball, but it is smaller than the diameter of the marble. Otherwise, the falling of the marble will make the lock cylinder jam and cannot be unlocked. Once the small steel ball falls into the blind hole, it can only rotate with the lock core, and will not run out of the blind hole. It will not affect the use of the B key, but when the A key is used, there is no small steel ball, so the lower part of the marble chamber The marble cannot be flush with the lock core (the height of the small steel ball is different), and the lock cylinder cannot be unlocked.