The castle is the basis of security for every room. The preservation of values and comfortable operation depend on how it combines difficultly compatible characteristics - reliability and ease of use. According to the installation method, the locks are mortise and overhead. There are also mounted ones, but they are well known to everyone, as well as their advantages and disadvantages. Therefore, we reverse
close attention to
crossbar locks. In this device, the role of the locking element is played by a metal rod - a bolt. It can have a rounded, square or rectangular shape. The bolt lock is locked when the bolts are extended (there can be up to 5-7 pieces) in a support mounted in the wall. The reliability of the locking device depends on the number of locking cylinders, because it is they that account for the main load when trying to break in.
The crossbar lock can be mechanical and electromechanical. With mechanical, everything is clear - there is a key, when turned, the locking elements are extended / retracted. Mechanical varieties are widespread, and a distribution network provides them in a wide range.
The electromechanical crossbar lock consists of two parts: a
mortise lock with a built-in opening sensor (control element) and a bracket with an electromagnet. When the control element and the electromagnet coincide, a door closure signal is generated, the bolt is ejected. The electromechanical crossbar lock can have an adjustable delay timer (from 0 to 9 seconds), which allows them to be used without controllers, while maintaining protection against premature operation. Models with controllers are more expensive, but they are more reliable.
The electromagnetic bolt lock must have a guaranteed power source: only if there is current, the door is kept locked. There is a separate type of locks that can be opened both with electricity and with keys. Such a bolt lock in a locked state is both energized and without, and is unlocked by an electric pulse in the presence of power and a key in its absence. You can buy a bolt lock in any specialized store. There are a lot of models and types today.
Bolt lock for roller shutters
To ensure the safety of the premises, roller shutters are often used. Locks on these devices are installed, as a rule, on the lower bar. At the same time, the crossbar lock is the most popular locking device for this type of protective devices. Firstly, because it has a small price, and secondly, because of the ease of installation and use. And although their design is different from the usual door locks, the principle remains the same: the metal rod blocks the movement of the protective shutter when the key is turned. Opening and closing is only possible with a key. There is a kind of crossbar lock that acts like a heck: the canvas is fixed in a certain position with the help of latches.
The lack of a bolt locking mechanism can be considered its low reliability: with a certain experience, it is not so difficult to pick up a key. Therefore, they also use other types of locking devices. Sometimes an electric drive is installed, which blocks the lifting of the roller shutter.