Today, with the growing security door, do you know exactly what the locks are? When you use the safe password lock, do you remember that there was a bullet lock that contributed to your privacy and property protection today? Let's take a look at the pin locks.

Billet lock overview

PinTumblerLock, also known as pinion lock, bead lock, lock spring lock or pin lock, is one of the most common lock structures. The principle is to use a number of cylindrical parts of different heights (called lock springs, marbles or beads) to lock the lock cylinder. When the correct key is placed, the lock springs are pushed to the same height and the lock cylinder is released.

In 1848, the American Yale-Linnas invented a marble lock with a cylindrical pin. At present, this kind of structure is commonly used in various locks in the world. The structure of modern marble locks has new developments, including two-way, three-way, four-way marbles, mother marbles and other structures, as well as flat, double-sided, multi-faceted, double-row double-sided, multi-row multi-faceted marble structures and combined marble structures. Therefore, the security performance of the lock is greatly improved, and the number of the lock is changed from the original 2,500 types to "million" and "face".

structure

1. Cylinder: A cylindrical lock cylinder made of copper that can be locked or opened when rotated. The lock core is divided into an inner lock core and an outer lock core, and the inner lock core is where you insert the key.

2. Marbles: The copper marbles are divided into inner marbles and outer marbles. They are cylindrical and vary in length and are placed in the circular holes of the inner and outer lock cylinders. A lock usually has 3-5 sets of marbles.

3. Spring: Installed in the round hole of the outer lock core. Hold the marbles.

4. Locking tongue: The part that is stretched when unlocking. The cylindrical inner lock cylinder rotates to drive the lock tongue. The padlock is the "nose" that drives the lock.

5. Key: It is not necessary to introduce, there are different levels of "saw teeth" corresponding to different lengths of marbles.

Development status of marble lock

The ball lock has been around for more than 150 years and is still widely used. It is a common lock on the market. However, due to the extensive use of the marble lock technology, the drawbacks of the marble lock are becoming more and more obvious, mainly in the following three aspects:

1. The end of the marble is exposed and the working stroke is short. The marble can be directly touched by foreign objects (wire hooks, etc.), which is easy to be opened by technology.

2. Non-locking keys can enter the lock core, which is easy to cause the keys to open and the key teeth to open and so on. Their own keys can be locked into other people's homes, and some can even open other people's home locks.

3. The key can be prepared at will. People with keys can be found everywhere in the market.

Concerned about surprises

Label: The lock of metal locks and its development status

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