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Combination PadLock Design Structure
May 16, 2017

  Combination padLock Password lock is a lock, open with a series of numbers or symbols, text password lock can be divided into: mechanical password lock, digital password lock and so on. Password locks are usually just a permutation rather than a true combination. Part of the password lock only use a turntable, the lock within a few discs or cams; also some password lock is a group of several carved a number of dial wheel, directly drive the internal lock machine.

Design Structure:


The simplest password lock, commonly used in low security settings for bicycle locks, uses multiple dials. each



  Combination padLock The middle of the circle is concave. There is a protruding tooth on the center of the lock, used to hold the dial. When the dial goes to the correct combination of passwords, the lock can be opened. This lock is the easiest to open. Many of these locks do not need to know the password can be opened. Unless its internal components make it flawless, as long as the axial pull, one of the teeth will be more than the other pull the dial. At this time the wheel was tightened until the small "card" was heard, indicating that the tooth had entered the correct pitch. Repeat this step and you will be able to open the lock soon.


The lock on the padlock or box can be a turntable



  Combination padLock The The turntable drives a few balanced discs or cams behind. Traditionally, when you turn on this lock, turn the turntable clockwise to the first digit, then turn the second digit counterclockwise, and so on until the last digit. Cam is usually concave, when transferred to the correct password, you become a straight line, the lock can be opened.

This password lock is more secure, but not without defects. For example, some of the password padlock can pull the lock, and then turn the turntable until you can not move, so that the password can be found. There is also a certain relationship between the numbers of the turntable locks, so that the combination of the password is greatly reduced. The cheap password padlock can be opened with a special liner without using a password.

The use of the password lock on the box is more tight. Experienced locksmith can rotate the turntable while listening to the voice of the cam in the lock and use the handset to listen to the possible password.


Mechanical lock is relatively stable, durable, and does not require power. But the operating method to learn more slowly, the operation is not convenient, change the password requires professionals.


Electronic password lock with a fast operation, modify the password is relatively simple and free, just enter 0-9 numbers can be unlocked and so on. Although the price of electronic password lock in recent years, the quality has improved, but because it is more complex, so the stability and durability as mechanical password.

Card type

Combination padLock Brush card password lock can use their own IC card to open the safe door, simple operation, but the requirements of the IC card is relatively high, if the contact with the magnetic objects, IC card may be weakened, can not open the password lock.


Fingerprint in this world is difficult to find the same, so put the fingerprint recognition technology applied to the safe, strong security, easy to use. But the opponent's dry and humidity requirements are more strict! The location of the finger to identify the location is also more rigid! Even if the same finger, if the input before the fingerprint and open the door before the location is not the same, it is possible to identify the failure!

Other style

Some door locks have a numeric keypad, and when you type, you can type a series of numbers. This lock is the use of electronic control, common in the office. The advantage is that as long as the employee password can be told, no need to copy the key. However, if someone told the password to outsiders, this lock will be useless. So this password lock password needs to be replaced frequently. This lock has 3 - 6 password, high confidentiality.