Square combination locks are widely used security devices that allow access only when the correct combination is entered. They are commonly found in lockers, cabinets, and some storage systems. The working principle of these locks relies on precise alignment of internal components to release the locking mechanism.

Internal Structure

A square combination lock typically contains several rotating discs or wheels inside a square housing. Each wheel has notches or gates corresponding to specific positions in the combination sequence. A spindle or central shaft connects these wheels, allowing them to rotate when the external dial or key is turned.

The Role of the Combination

The combination is a sequence of numbers or positions that aligns the notches on each wheel. When the correct sequence is entered, all the notches line up along a single path. This alignment permits a locking bar, lever, or latch to move freely, releasing the shackle or door. If the combination is incorrect, the notches do not align, and the locking mechanism remains engaged.

Operation Process

To unlock the square combination lock, the user rotates the dial or key according to the preset combination. The first rotation aligns the first wheel, the second rotation aligns the second wheel, and so on. Once all wheels are properly positioned, the locking bar can slide into the notches, allowing the lock to open. Resetting the lock simply reverses the process, re-engaging the latch.

Advantages of the Principle

The principle of square combination locks provides reliable security without the need for keys, which can be lost or duplicated. The internal alignment mechanism ensures that only the correct sequence can disengage the lock, making it suitable for applications where controlled access is important.

https://www.keeperlock.com/product/brass-padlock/bb500-diamondshaped-straightopening-brass-padlock.html
RHOMBUS BODY BRASS PADLOCK
ART. NO.
SIZE
BB530
30mm
BB540
40mm
BB550
50mm
BB560
60mm