Essential facts about the lock

Previously, security was not a daily concern. Today, it has become paramount, and security measures are now of utmost importance.

The first lock was manufactured in Egypt in 3000 BC. For these early inventions, security was not the primary priority.

It has been studied extensively since the 19th century and continues to evolve to this day.

How does a lock work?

Several mechanisms are involved in the locking and unlocking of a lock.
We will examine, in general terms, the various components that make it up, as well as their primary functions.

** The Cylinder:

Also known as the plug or the lock barrel, it is the central component of a lock. This is the part that accepts the key and determines the security level of the opening. In turn, the cylinder is composed of two elements: the fixed part, or “stator,” and the moving part, also referred to as the “rotor.”
The security level of a lock depends on the number of pins located within the stator. Depending on the model and the type of cylinder—whether single block or round (adjustable)—the number of pins ranges from 5 to 36. The higher this number, the more difficult the lock is to pick.

** The penalty:

This refers to the entire housing into which the key is inserted. A lock generally features two bolts. One is activated by the movement of the handle to open and close the door. This component, commonly referred to as the “spring bolt,” does not require a key. There is also the “deadbolt,” which is engaged using a key. It is held in place by a spring or a strike plate.
The shape of the bolts can vary. The choice depends on the location of the opening (front door, secondary door, cellar door, etc.). Some existing types include: split bolts, edge bolts, gable bolts, Mentionnet bolts, night latches, etc.

** The trigger:

This is the metal piece attached to the door frame. It is available in several models:
– The simple or mechanical trigger, which is manually operated via a handle, is the most widely used model,
– The electric strike is activated by a button. Ideal for building entrances, it provides both convenience and enhanced security,
– The pressure latch is equipped with a push-button that allows the handle to be locked and the door to be secured.

In summary, here is how a lock works: the key inserted into the lock cylinder triggers the bolt; this then turns the strike plate to  lockdownsubject of the door.