The principle of operation of the secret castle
Manufacturing technology will not be difficult even for inexperienced craftsmen. But only under one condition - it is necessary to understand the principle of the mechanism and the influence of parameters on functionality.
In the closed position, the gate with the handle does not open.
An outsider cannot enter the courtyard, and the owner opens the entrance without any problems.
There is nothing on the outside of the gate during a routine inspection.
Just leaning down, you can see a small piece of metal strip protruding beyond the cross member of the frame.
When shifting his foot towards the castle, the gate opens.
How is the "secret" made
A primitive, but quite effective device, consists of a welded L-shaped strip.
A “retainer" is fixed at the bottom, it performs two tasks: it regulates the magnitude of the course of the strip and prevents it from moving away from the gate frame. At the same time, the hanging and friction of the metal on the profiled sheathing sheet is eliminated.
The second holder is fixed on the vertical stand, it gives the lever a reciprocating movement and allows you to lift on the hook during the closing of the gate.
Now it remains to take the dimensions taking into account the installation location of the elements, weld the L-shaped strip, make or buy holders and assemble the structure.
Conclusion
Quite often, children put matches or chewing gum into the keyhole, the lock requires repair or a complete replacement. To prevent damage, it is recommended to increase the distance between the lock bore and the hole in the gate casing. This will greatly complicate the damage to the mechanism.
