The door lock mutual opening rate is a topic that […]
The door lock mutual opening rate is a topic that cannot be avoided in the door lock industry, but many customers are not very familiar with it. Today CAUSTE popularizes this familiar and unfamiliar problem for you.
There is a concept of “mutual opening rate” in the production of locks. The mutual opening rate has corresponding national standards according to the use of locks. The difference between safety requirements is from a few percents to a few thousandths, a few thousandths or even more.
When the door lock is produced, according to the processing precision and the number of beads. the manufacturer knows the maximum number of combinations in advance, and according to this arrangement, the continuous cycle production is combined with the mutual opening rate. The mutual opening ratio refers to the ratio of the number of locks that are opened to each other (the percentage of the number of times that the number of openings is compared with the total number of trials) in the same batch of locks.
The less the lock that a key opens, the stronger the safety and reliability of the lock. The strength of well-known lock brands is strong, and the mutual opening rate of locks is only One of ten thousand. However, some manufacturers with irregular and incompetent strengths may reach a fraction of one-tenth, which means that these manufacturers may only have dozens of sets Production lock mold.
There are two main factors affecting the mutual opening rate. One is the tooth on the key, and the other is the marble of the lock core. In general, each lock manufacturer has a toothbrush for the arrangement of the teeth, which is equivalent to a codebook, with thousands to tens of thousands of arrangements. In theory, it is completely sufficient. For the marbles, according to the national standards, the extremes of the marbles should exceed 0.5 mm, but some enterprises are not careful or the workmanship is reduced, resulting in the accuracy of the marbles is not accurate enough, the grade difference of the locks is not well reflected, resulting in The mutual opening rate is too high. The simpler and cheaper the lock cylinder, the simpler the order of the springs in the lock is limited, the combination is limited, and the repetition rate is higher.
Put the safety first, select the high-level lock cylinder, and observe the number and shape of the key’s teeth. The more the number and the complicated shape of the key, the lower the mutual opening rate of the corresponding lock.