Expressed in technical language, the design of the door lock periodically undergoes its evolutionary development. Being a bright representative of the birth of personal property and private property, the waybill has passed a long and thorny path from the ordinary bolt to the modern model of Mul-T-Lock. How to choose the right, and then install the door lock on the waybill?
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Locking construction waybill
The simplest locking design for the door, which during installation and installation does not harm the integrity of the door leaf, is the invoice lock.
The lock is installed from the inside of the door directly to the canvas, so the level of protection depends on the solidity of the door. The design of the lock is arranged so that the possibility to open it from both sides is carried out with a key or from the inside, using a special swivel element. Increase the reliability and resistance to burglary of the overhead lock using additional safety measures: safety valve and wedge latch.
Like any similar locking structure, overhead door locks are characterized by the following indicators:
• level of secrecy
• level of reliability
• resistance to burglary.
It is for these criteria that it is necessary to choose a door lock. However, the principle of installing an overhead lock differs from the technology of installing a mortise lock.
Door overlap device
The overhead door lock has as follows:
• Enclosure with locking mechanism inside
• Actuator lever
• Faceplate
• the response part.
Devices for overhead and embedded locking systems are similar in many respects, so you can find differences in the types of secrecy mechanism, the type of construction and the presence of a latch.
Types of overhead locks
Identically, the designs of the mortise lock, overhead locking systems are distinguished by:
• the type of privacy mechanism
• type of door construction
• with the presence or absence of a latch.
mechanism of secrecy of the castle
Overhead systems can be equipped with a cylinder or a lever mechanism. The most popular can be called cylindrical overhead locks. Such "attachment" is easily explained: in the case of a key loss, as well as the wear or inoperability of the locking mechanism, it is possible to replace only a part of the lock, namely its larvae. In the overhead locks of the lever type, this possibility is excluded. Therefore, before door locks overhead buy, do not put to remember this.
model dependence on door design
The models of overhead locks are designed for any type of door. In addition, there are models for right- or left-hand door types. In the technical passport for a door-waybill lock for such an event there is a record: "L" - for the left-hand door, "P" - for the right-hand door.
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presence of a crossbar system
There are overhead locks and boltless bezrigelnye. The lock locks can be equipped with a crossbar system with one, two, three or five crossbars. Bezrigelnye overhead locks work due to the function of a powerful electromagnet, which attracts a fixed metal plate. These are electromagnetic overhead locks.
Lock locks are also divided into the following types:
• Mechanical
• electronic
• electromechanical.
The simplest type of overhead lock on a wooden door is a mechanical and electronic type.
If the mechanism of functioning of mechanical locks is carried out by turning the ordinary key, then the principle of the action of electric locks is based on the supply of a control pulse. Therefore, electromechanical locks work from the incoming electrical impulse.
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Latches for overhead locks
Most models of overhead locks of a mechanical or electromechanical action are equipped with a latch. There are locks with a spring and a fixed latch.
The door-waybill lock with the spring latch is actuated by the outer action of the key and the inner handle is the handle. In this case, the latch can be returned to its original position in the housing or closed in the box by a lock button on the lock surface.
The operability of the lock with the latch fixed is fixed and fixed by the device located on the lock. The handle can be fixed with a key from the outside, and the latch can be removed back into the lock case using the button. More expensive models of overhead locks, which can be purchased in specialized stores, are equipped with a button and a cylinder directly on the lock case. Such models can be opened only by applying voltage to the locking mechanism.
When installing these types of locks, the lock case with a spring latch must be installed on the inside of the doorway with exact matching and alignment of the mating part. The lock box of this type of lock is mounted on the door frame.
The lock case with a fixed latch is mounted on the projections located on the metal plate.
From a simple bolt to the Mul-T-Lock system
Modern locking systems of the hinged type are currently striking with the highest level of resistance to existing methods of opening and breaking.
Patented lock formulas are the holders of high-security High Security cylinders. This allows you to install overhead locks generation NEXT on any metal doors. The guard mechanism of secrecy, equipped with five steel bolts and a 40 mm bolt retraction, allows the padlock to be closed for two or four half-turns.
Multivariance of the cylinder system Interactive, MT5 + and Classic with a steel locking bolt is the complete absence of anything like this in the world of locking systems.
Respectable massive body of the overhead lock with full confidence will make it clear that any unauthorized opening is excluded.
Installing the overhead lock with your own hands
The overhead lock is a simple enough design that can be made by hand. In the delivery set of the lock there is always an instruction for installation and a set of fasteners. When installing the lock, there are general rules, adhering to which you can quickly and reliably install a locking structure. All models of locks are placed on the inner door leaf. The installation height from 110 to 150 cm is considered the most preferable.
After installation, the lock is completely located on the door surface. The body of the overhead lock is installed on the bar located at the end of the door. When installing the lock important is the thickness of the door and the material of its manufacture. Thus, the fastening of the lock to the wooden door is carried out using screws. When installing the overhead lock on the metal door, the metal fixing pins are preset in the places of the intended fastening. Lock bolts do not pass through the plane and body of the doorway, but move into the lock box. Therefore, it is necessary to carefully adjust and install the locking element of the lock.
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