القفل ذو المزلاج البسيط - الأقفال .. الآلات التي نستخدمها كل يوم وكيف تؤدي عملها

Simple latch lock - Locks .. The machines we use every day and how they work

Locks:

Since doors were invented, people have been thinking of inventions to keep these doors locked and locked. All the methods they came up with had one thing in common, which is a moving part, which is the latch (bolt) that slides inside a fixed, unmoving opening, which is the receiver. Placing the latch inside this fixed receiver locks the door, and when the latch is pulled out, the door can be opened.

Simple latch lock:

The simplest type of lock contains a moving latch and a fixed receiver. The drawing at the top of this article shows you how the "latch" connects to the door: and how the receiver connects to the door frame. Sliding the bolt "into the fixed opening" secures the door to the door frame, and then the closing process is completed. This is an easy, cheap way to lock doors, and does not cause any trouble or difficulties. This method has been followed for many years. There was no other way. But this method has very important drawbacks. Let us now study these drawbacks and how they can be overcome.

Perhaps one of the drawbacks of the simple latch and its fixed receiver part is that you must move it yourself, and supervise the process of closing the door every time. For example, you cannot simply push the door, and then expect the bolt to slide into the fixed opening by itself. Here you come to the first improvement that was introduced to it, which is the bolt. When you close the door violently with the slanted edge. The slanted edge collides with the fixed receiver part, and this results in the bolt being pushed backwards. Then, if the bolt becomes facing (in front of) the receiver opening, push the spring of this bolt forward, and push it into the receiver, and the door closes.

Receiver
Screws
This end is pulled backwards when the receiver is struck

The rotation of the ball No. (1) causes the metal tongue No. (2) to move
and this in turn pulls the screw backwards.