Cryptographic u-lock principle

Hello, what you want to ask is what is the principle of password U lock? The principle of password U lock is to use the elasticity of spring. The principle of password U-lock is that when the U-ring is pressed, the spring at the right end is compressed, which exerts an upward elastic force on the U-ring. Because the left bayonet is blocked by the control bolt when the pressure F acts, the U-ring cannot bounce up and the lock is locked. There are several protruding teeth on the shaft in the center of the lock to stop the dial. When the dial ring turns to the correct password combination, it is blocked by the control bolt and the U-shaped ring bounces.