The updating and replacement of cabinet locks are different in structure, which determines their different functions. For the principle of cabinet lock, most cabinet locks have the same principle, except for some cabinet door locks such as plane locks and connecting rod locks. General cabinet locks, such as ordinary cabinet locks, cabinet locks, computer keys, cross-shaped door secret locks, etc., although their styles, structures, sizes, key orifices are different, but the principle of unlocking is exactly the same. As the saying goes, "Never change! "The main reason why these locks are identical is that their locks are all round objects. Everyone who has studied physics knows that only a circular object can rotate freely. Squares and flats are objects that cannot be rotated at will.
According to a lock repair expert, after more than 20 years of painstaking research and dismantling of more than ten thousand locks, thousands of types and models of locks are carefully analyzed and explored, and the principle of unlocking and many experience related to locks are summarized. No matter what type or type of lock, as long as the lock is constructed by two parts of the lock body and the lock core, the lock core must be a circular object. No one can change this principle. In the next few decades or hundreds of years, no one will be able to change this principle.
With so much discussion, the principle of locking is actually written on the core of this circular object. First of all, the locks are made of harder metal. So why are locks used in everyday life made of copper? There are certain reasons for using copper cores. Copper is not easy to rust, copper and iron and other metals will not bond. Copper is relatively hard, and has good toughness, not easy to fracture. There are also a few manufacturers that use stainless steel to make locks. Stainless steel has a high cost, which is not adopted by general manufacturers. However, in order to save materials and reduce costs, some manufacturers use aluminium alloy copper plating to make locks. It is not advisable to cause the lock to break easily and the lock core to break easily. In addition, the use of copper wall locks for cabinet locks has another advantage that it is not easy to oxidize. Even if the lock is hanging in the open air under the sun and rain for a long time, although it is not easy to open, but as long as a few drops of lubricant (such as kerosene, oil, preferably clothing and car oil) activity opened a few times, the function of the lock can be restored as before.
Secondly, several small holes are drilled on the circular lock core, and the same number of small holes with the same diameter are drilled on the lock body position corresponding to the small hole in the lock core. The function of small holes is to load marbles and springs. The small holes in the lock body are used for loading marbles and springs, while the holes in the lock core are called marbles. Usually, we call the small holes in the lock body and the lock core as bullet holes. Then, the role of the marble is to lock the lock, so that the lock can not rotate freely. Therefore, no matter how different the shape of the lock body and the mechanism inside the lock body are, the locks, marbles and springs play a major role in the principle of unlocking. When the bullet hole of the lock body completely coincides with the bullet hole of the lock core, the spring in the bullet hole of the lock body plays an elastic role and ejects the bullet in the bullet hole of the lock body upward. The bullet in the bullet hole of the lock body is pushed into the bullet hole of the lock core. The original bullet in the lock core bullet hole is raised to the top at the same time. Because a long convex bar is stuck in the key hole of the lock core, the bullet in the bullet hole of the lock core is blocked, so that the bullet is not ejected out of the hole of the bullet, and is taken off. When locks are manufactured by cabinet lock manufacturers, the length of the bullet and the depth of the bullet hole in the lock core have been calculated. Generally, the sum of the length of the two bullets in the keyhole and the core bullet hole of the lock body must be greater than the depth of the core bullet hole and the length from the core bullet hole to the long convex bar. And the length of the bullet in the bullet hole of the lock core must be more than one third of the length from the bullet hole of the lock core to the long convex bar. In this way, the bullet hole in the lock core bullet hole has a long convex bar which can not be jammed out of the bullet hole. The bullet of the lock body bullet hole is partly jammed into the core bullet hole under the action of the spring. When the bullet in the bullet hole of the lock body is stuck in the bullet hole of the lock core, that is to say, the lock core is stuck, which means that the circular object is stuck, so that the circular object can not rotate freely. At this time, the lock is in the locked state, which is commonly referred to as "locked".