The history of locks, how many locks have you used?

Locks have a long history and were born almost simultaneously with private ownership. According to the unearthed cultural relics and historical documents, the development of locks has a history of 5,000 years.

Rope knot

Initially, humans simply tied the door with a rope and finally put a special knot on the opening. This is the earliest lock. This tightly tied knot can only be picked up with a tool called "觿(xī)" made with animal teeth or animal bones. "觿" is the earliest key.

Wooden bolt

By the time of the Yangshao culture, which was 5,000 years ago, our ancestors created a wooden lock mounted on a wooden framed building, which is what we call the bolt. This is the oldest lock in the world. It can be called the "world". A lock." After the carpenter's founder Lu Ban improved and installed the organs, it formed a real lock.

Three-spring lock

Because the wooden lock is not strong enough, the confidentiality is not strong, and later changed to bronze, but the initial structure is simple and easy to open. In the Han Dynasty of China, a copper reed lock, commonly known as the three-spring lock, appeared. It can be said that it was a qualitative leap in the history of the development of Chinese locks, and its confidentiality and security were strengthened. The three-spring lock has been used in China until the 1950s.

Blade lock

In the 18th century, the British Dannick Porter invented the cam rotor lock. The inner metal blade of the lock was rotated by the spring. The key inserted into the lock must first be turned into contact with the lock tongue to open. The key to the blade lock is beautiful and generous. It is recognized as a symbol of locks and keys. Many countries make it a large golden key and give it to friends and VIPs, symbolizing respect, peace and friendship.

Pin lock

In 1848, the American L. Yell invented the use of a cylindrical pin bolt lock, humans have entered the era of modern locks, the lock through the combination of the marbles, so that the lock number from the original 2,500 changes to millions , thus greatly improving the security and security of the lock, has become the most commonly used lock in the world.

Sleeve core lock

In 1874, the sleeve-turn lock invented by Brammer in the United Kingdom has a milestone in the history of locks. It is different from the classically-locked transmission method that uses the key to drive the lock bolt. The sleeve turn lock will lock. The mechanism can be placed in a small sleeve, and the small key is used to control the lock bolt through the core. The sleeve core structure also lays a foundation for the miniaturization of the lock.

Smart lock era

In the 1970s, with the application of microelectronics technology, a series of smart locks such as magnetic lock, voice lock, ultrasonic lock, infrared lock, electromagnetic wave lock, electronic card lock, fingerprint lock, eye lock, remote lock and so on appeared. These locks have high security and safety that are unmatched by mechanical construction.

Undoubtedly, in the next ten years or even five years, the smart lock industry will develop at a high speed, gradually replacing mechanical locks as the standard configuration of the portal.

Editor in charge: Liu Changqi

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