Talk about changing the lock.

If you have the ability to change it yourself, change it yourself. If you don't have the ability to change it, please ask a professional to change it. Generally, the lock changer will not be stolen, but it is better to be careful in everything.

Lock, suǒ ㄙㄨㄛˇ, simplified according to ancient calligraphy. "Shuo Wen Jie Zi": "Lock, door key also. From jinsheng. " . Metal door key device is a model of lock. Original meaning: a metal device added to the opening or joint of doors, windows, utensils, etc. And can only be opened with keys, passwords, magnetic cards, etc. Such as door locks, combination locks and keys.

develop

Locks were born almost simultaneously with private ownership. As early as 3000 BC, wooden locks were installed on the wooden structures of Yangshao Cultural Site in China. In the Eastern Han Dynasty, China's iron three-reed lock technology has reached a fairly high level. Three-reed lock has been used for more than 1000 years.

/kloc-at the beginning of the 0/8th century, the Englishman D. Porter invented the cam tumbler lock. The number of keys has developed from more than 20 kinds of three reed locks to more than 80 kinds. /kloc-In the mid-9th century, European manufacturers changed the cam tumbler lock and triple-spring lock into sliding tumbler locks, and the key number can reach 1600.

1848, American L. Yale invented the pin lock with cylindrical pin, which became the most widely used lock in the world. The structure of modern pinball locks has made new development, including two-way, three-way and four-way pinball structures, as well as plane, double-sided, multi-sided, double-row, multi-row and multi-sided pinball structures and combined pinball structures.

In the 1970s, with the application of microelectronics technology, electromagnetic lock, infrared lock, electromagnetic wave lock, electronic card lock, fingerprint lock, retina lock and remote control lock appeared. These locks have higher safety performance than the mechanical structure. Modern locks can also realize the program control of the system according to the set logical relationship in a specific system.