Principle of standard dial combination lock

One, multi-dial

The simplest standard dial combination lock, which is commonly found in bicycle locks with low security settings, uses multiple dials. There is a groove in the middle of each circle. The shaft in the center of the lock has a plurality of protruding teeth for catching the dial. When the dial is transferred to the correct password combination, the lock can be opened. This lock is the easiest to open. Many of these locks can be opened without knowing the password. Unless its internal parts are good, as long as the axial tension is pulled out, one of the teeth will tighten the dial more tightly than the others. At this point, the rolling ring rotates until a small "click" is heard, indicating that the tooth has entered the correct groove. Repeat this step and you will open the lock soon.

Second, single turntable

The padlock or the standard dial combination lock used on 10,000 can be a single turntable. The turntable pushes several balanced discs or cams. Usually turn the dial clockwise to a good number, and then turn it counterclockwise to a good number when the lock is opened, in order to reach the latter number. There is usually a recessed position on the cam. When the correct password is transmitted, the characters line up and the lock can be opened. This type of standard dial combination lock is more secure, but it is not good. For example, some password padlocks can be tightened to lock and then turn the dial until it can no longer be moved in order to find the password. There is also a certain relationship between the number of turntable locks, which greatly reduces the possibility of password combinations. The cheap combination padlock can open the special lining without a password. The standard dial combination lock structure used on 10,000 is stricter. An experienced locksmith can rotate the turntable while listening to the sound of the cam in the brass padlock and use headphones to determine a possible password.