Pin Tumbler Lock, also known as pin tumbler lock, bead lock, bolt lock or pin lock, is one of the most common lock structures. The principle is to use multiple cylindrical parts of different heights (called lock springs, marbles or beads) to lock the lock cylinder. When the correct key is inserted, the lock springs are pushed to the same height, and the lock cylinder is released.
The history of marble locks can be traced back to ancient Egypt around 2000 BC. At that time, people installed wooden pillars on the door, with a horizontal latch on the top of the pillar. There are a series of bumps on the latch, which are equipped with lock springs. Use a special key to push the lock spring upwards to open the door latch.
In 1848, Linus Yale Sr. (Linus Yale, Sr.) invented a cylindrical pin lock and successfully applied for a patent. His son Linus Yale (Jr) improved it and received a new patent in 1861. The structure invented by Nenas Yale Jr. is very close to today’s marble lock. Old-style high-security locks needed two pounds of keys, but with this series of inventions, the key of high-security locks has been reduced to several tens of grams, laying the foundation for modern mechanical security.
Later, although the pinball lock was challenged by locksmiths to open it many times, the principle of the pinball lock was still highly valued. Companies in the United States, Northern Europe, and Israel continued to develop new pinball locks to prevent locksmiths from opening it. Modern large lock companies only rely on the principle that the founder invented a new type of pin lock, which is enough to build a global business and reflect the potential market size of pin locks.
Ancient locks were originally called mu, closed, key, chain, and bell. In the early days, it was made of bamboo and wood structure, which originated from door|Xi. Until the Spring and Autumn Period and Warring States Period, Luban set up the Olympic organ in the wooden lock, and until the metal reed structure lock (also known as the groove lock) made in the Eastern Han Dynasty. In Tang Dynasty, locks were mostly gold, silver, bronze, iron, and wood. In the Ming Dynasty, there were four types of locks, namely, wide locks, Citi locks, jewelry locks, and torture locks. In fact, there is a type of combination lock that is not very common. Through the Qing Dynasty, the Republic of China to the 1950s. Ancient lock craftsmanship is exquisite and mysterious and rich in cultural connotation. Carved lettering such as: champion and first, long life and wealth,! Qilin gives off his son, dragon and phoenix are auspicious and so on. Take the fish-shaped lock as an example. In the “Zhi Tian Lu”, it says: “The door lock must be the meaning of vigil for the fisher.” The fish is also auspicious year after year. Ancient locks also imply wealth, so there is a saying of “donkey and piggyback key and horseback lock”. Later derived to love, eternal family, perpetual body, Yongkang, it seems that all good wishes reside in it.
According to data records, the earliest locks made of wood can only be used as symbolic locks. The metal lock in our country first appeared in the Han Dynasty, and it was a reed lock. The Ming and Qing Dynasties were the heyday of ancient locks, which were dominated by copper and iron. In the 1950s, low-cost welding hook locks, blade locks, and pin locks entered the Chinese market one after another, and ancient Chinese locks have since withdrawn from the stage of history. Through the vicissitudes of ancient locks, you can appreciate the profound Chinese history and culture. The specific names of the lock are one unlocking, two unlocking, three slap locks, three hoop tail locks, four unlocking, five unlocking, dragon and phoenix locks, dual locks, labyrinth locks (directional locks), bottom unlocking, and turning locks
, Inverted zipper locks, concealed door locks, keyless locks, square locks, firecracker locks, horse rein locks, horn locks, oxtail locks, beam lifting locks, text code locks, digital code locks, etc. It is particularly worth mentioning that although these ancient locks are of different lengths and sizes, they are similar in appearance. The secret lies in the slot of the keyhole, which can be described as varied and weird. The shape of the keyhole.

Electronic lock

Combination Lock

Deadbolt lock

Tsa customs lock