A lock is the basis for the security of every room. From how it combines difficult compatible characteristics - reliability and ease of use, the safety of values \u200b\u200band comfort of operation depends. According to the method of installation, locks are mortise and overhead. There are also mounted ones, but they are well known to everyone, as well as their advantages and disadvantages. So let's turn more
close attention to crossbar locks. In this device, the role of a locking element is played by a metal rod - a crossbar. It can be rounded, square or rectangular. The crossbar lock is locked when the crossbars (there can be up to 5-7 pieces) are extended into the support fixed in the wall. The reliability of the locking device depends on the number of locking cylinders, because they bear the main load when trying to break in.
The crossbar lock can be mechanical and electromechanical. With mechanical everythingit is clear - there is a key, when turning which the locking elements extend / retract. Mechanical varieties are widely available, and the distribution network provides them in a wide range.
An electromechanical bolt lock consists of two parts: a mortise lock with a built-in opening sensor (controlling element) and a strap with an electromagnet. When the control element and the electromagnet coincide, a door closing signal is generated, the bolt is ejected. The electromechanical deadbolt 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.
An electromagnetic bolt lock must have a guaranteed power source: only in the presence of current is it possible to keep the door locked. There is a separate type of locks, which can be opened both with the help of electricity and with the help of keys. Such a crossbar lock in the locked state is both energized and without it, and is unlocked by an electric impulse in the presence of power and with a key in its absence. You can buy a bolt lock at any specialized store. There are a lot of models and types today.
Roller shutter lock
Rolling shutters are often used to ensure the safety of the premises. Locks for these devices are usually installed on the bottombar. At the same time, the bolt lock is the most popular locking device for this type of protective devices. Firstly, because it has a low 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: when the key is turned, the metal rod blocks the movement of the protective roller shutter. Opening and closing is only possible with the key. There is a kind of bolt lock that acts like a latch: the canvas is fixed in a certain position with the help of latches.
The disadvantage of the crossbar locking mechanism can be considered its low reliability: with a certain experience, it is not so difficult to pick up a key. Therefore, other types of locking devices are also used. Sometimes an electric drive is installed that blocks the raising of the roller shutter.
