Recently, the General Administration of Quality Supervision, Inspection and Quarantine released the results of the national supervision and inspection of the quality of lock products in the second quarter of 2015. The report shows that the anti-dial safety device project has become one of the major unqualified items of mechanical anti-theft lock products. What is the role of the anti-dial safety device? What are the security risks caused by its failure? The China Quality News reporter interviewed Weng Jie, an engineer at the National Hardware Materials Quality Inspection Center.
"The number of anti-dial safety devices determines the safety of the lock." Weng Jie told the China Quality News reporter that the lock structure of the lock has a device for preventing foreign matter from opening. The type of the device is divided into long marbles and shaped Different types of marbles, closed center lines, etc. For a lock, the more safety devices it carries, the more difficult it is to open with a foreign object and the less likely it is.
"The previous locks were basically marble structures, but some of the marbles were very short. Sometimes a piece of iron was inserted and it was easy to put the bullets up and open the lock. For locks with more complex safety devices, the marbles There will be long marbles (it is difficult to play directly) and shaped marbles (with triangles, holes, grooves, etc.), which directly increases the difficulty of opening and is more secure." Weng Jie said that each lock is Anti-dial safety devices with anti-dial safety devices, but mechanical anti-theft locks are more demanding. The national compulsory standard stipulates that there should be no less than four types of anti-dial safety devices for mechanical anti-theft locks, and there is no upper limit requirement.
Regarding the question of "Which A-level lock and B-class lock is more secure", Weng Jie said that among the locks that people usually come into contact with, only mechanical anti-theft locks, spherical door locks and external door locks have A-level locks and B-class locks. The main difference is whether the lock is a single row of marbles or a double row of marbles. For ball locks and exterior door locks, Class A locks perform better and currently occupy most of the market. However, for mechanical anti-theft locks, Class B locks perform better than Class A locks. The common mechanical anti-theft locks on the market are mainly Class B. At the same time, the anti-theft locks that people used to refer to are mechanical anti-theft locks. However, the electronic anti-theft locks that have appeared in recent years are also classified as anti-theft locks, and there are already product standards. The core safety devices of the two locks are not much different. Weng Jie further explained that the mechanical anti-theft lock has high safety requirements, so it must be marked with the level. At the same time, there is a C-class anti-theft lock with better anti-theft performance.
“The reason for the failure of the anti-dial safety device is very simple. The main reason is that the manufacturer has produced a lock with insufficient type of equipment for cost-saving considerations.” Weng Jie told the China Quality News reporter that the safety performance of a device and four devices The gap is very large. To make a safer lock core, the process is inevitably more complicated and the cost will be higher. In the test, the unqualified mechanical anti-theft lock anti-dial safety devices are generally only one or two kinds, and there is a big gap between the four types required by the standard.
How to judge the authenticity of mechanical anti-theft locks, Weng Jie said, the easiest way is to check whether the keys are single row, double row or composite type. If it is a single row of marbles, it is definitely not a mechanical anti-theft lock. "When the technology is unlocked, it can be opened in a few seconds or the single-row marble structure is definitely not a mechanical anti-theft lock. The anti-opening time of the mechanical anti-theft lock must be more than 5 minutes, and it must be a double-row marble." Weng Jie said.
Shopping advice
1. Buy well-known brand products. At present, the well-known lock brands at home and abroad have already had considerable strength, and their product quality and other aspects of services are more secure.
2. In addition to stainless steel products, try to choose a lock with a relatively large weight. For the mechanical anti-theft lock, the weight of the lock head and the panel are larger, and the corresponding materials and the like are also better.
3. Pay attention to the product touch. Some of the poor quality anti-theft lock products have a poor surface and smoothness. Consumers can make simple judgments by hand when they purchase.
4. Pay attention to the quality of the anti-theft lock. For the lock, the handle is an important part of it, and it is also a component that is more prone to damage and inconvenient to replace. Therefore, pay attention to the quality of the handle when purchasing.
