Whatever qualitative, strong and reliable was the door, protection against others penetration in many respects depends on the door lock. Besides, the right choice of the door lock provides easy opening and closing of door. To choose really good mechanism, it is necessary to know about merits and demerits of their different types.
The strong and steel outer door has to be equipped with the reliable and high-quality key mechanism. The loops established on doors help to improve sound-proof properties of door assembly. How the lock is honestly cut, reliability and durability of the established door depends.
If very simple, then it the inexperienced thief is able to open the key mechanism. Show consideration for the choice of the lock, so you will secure family and the property.
Correct replacement of larva of the lock of outer door is made after the choice of the suitable mechanism. It is necessary to approach process of purchase responsibly then not to find discrepancy.
What door locks are
In use so-called level door locks are considered as the best and simple. The principle of protection against breaking consists in strong fixing of door in closed position by means of special locking elements here – suvald. Having stopped the choice on the level door lock, keep in mind that too large number of locking elements significantly increases width of the device that considerably complicates its installation at already ready door.
Reliability of the door lock and firmness it to attempts to open door by means of various master keys directly depends on quantity suvald.
Cylinder door locks are equipped with the built-in core of cylindricity with the suvalda which are available in it which quantity can be, depending on model of the lock, from 3 to 6 pieces. Despite resistance of the cylinder door lock to master keys, it is possible to protect such device from breaking by means of physical manipulations only by installation of steel pads on inside
Today on sale good selection of door closers. Buying the lock for metal door, specify class of protection and quality of product. All door assemblies have certain class of protection, show characteristics of I-IV locks of classes in the passport.
At entrance castle mechanism I of class simple and normal design. Will easily open for the professional this locking device. To force lock II of class the bigger period of time will be required. Key mechanism III of class has the increased durability.
At the key device having the IV class, the level of protection and quality is much higher. It is heavy to open it, the special tool is for this purpose necessary.
Key products have various features of the design. For houses from bar which are sheathed by siding there is wide choice of key products. Key mechanisms are most known: crossbar, suvaldny, cylinder and electronic.
Reliability of the door lock and firmness it to attempts to open door by means of various master keys directly depends on quantity suvald.
Key devices crossbar or rack establish on metal doors, these products have low class of protection. They are simple and do not need correction.
Locks have the keys of flat configuration supplied on both sides with the cut-through grooves. Characteristic feature of the rack mechanism: it is supplied with special handles from two parties. The lock of this type is opened, without using the tool for opening of the lock.
Cylinder key devices have various types and classes of protection. They are very simple, it is easy to open them. Products of this look do not crack, and just break out. After blow the larva will fail inside, and the lock will open.
Door lock: cut-in, laid on or hinged
When choosing the door lock it is necessary to consider also in what way this device fastens to door. There are only three types of fastening of door locks, each of which has the pluses and minuses. Box door locks which fastening happens due to incision of product in internal part of cloth of door are considered as the most popular. The box lock well protects the house from breaking, however mechanical properties of door in the field of its arrangement, as a rule, weaken a little. Minus of use of the box door lock also quite labor-intensive process of its installation is considered.
Key mechanisms which belong to III and IV class have special tab, it is made of armored leaf. At this lock it is difficult to remove larva and to break the mechanism.
Types of cylinder locks:
- Single-row bayonet locks are code and locking rods which are made of high-quality metal, they are located in one row. Code rods possess the correct cylindricity, and locking – own notch which reminds fungus.
- In bayonet two-row designs the rods establish in two ranks, their quantity is increased. To open and close these locking designs the special double ended wrench is necessary.
- In crosswise locks the code rods have cross configuration. The keyhole and key remind cross. In these devices there are about 4 rows in which there are more than two rods.
- Cylinder designs have on key conic milling, in their structure happens to five rows of rods. They are in the different planes to increase reliability of the key device and number of code versions.
- Sometimes locks are equipped with rods which turn. They are allocated with availability of special rods of the rotary plan. Today level locks are very popular. They are called so because have special steel plates, the lock mechanism consists of them. To open the lock, it is necessary to build plates in the established sequence which the key form indicates.
This key key is made as simple rod which owns two plates, they have grooves and are on the end.
On safety level suvaldny mechanisms are in the first place. Their design is located in door cloth. It is necessary to try several ways to approach the device.
That the door was more reliable, put suvaldny and cylinder locks on it. The design will become stronger, than the level of protection of locks is higher.
Better or not electrical locks in comparison with mechanical designs? They have positive sides: 1. You often come back home, carrying full bags in hands, then get keys and open several locks, it is not convenient. The electrical lock is supplied with control board by means of which the door.2 opens. You should carry different keys on sheaf. If at doors the suvaldny mechanism is installed, then it has big keys which to carry not absolutely conveniently. The electronic lock has small key.3. If the coded electronic lock or the biometric locking device, then key is not necessary. At the coded lock you just dial digits. If you have bad memory or you lose keys, then put the biometric lock opening on hand.4 fingerprints. The locks having electronic control units have additional opportunities: the alarm system when the stranger tries to open outer door works.
Recommend to buyers various types of key mechanisms, they differ from each other by fastening method on door cloth. Cut-in mechanisms establish on outer door, using special purpose tool.
Scarves have the special box-shaped form. They are established on door, cutting on the prepared compartment. The lack of padlocks is that they separate from door. Products have good core, but it is easy to crack them.
Laid on door locks are used usually for additional protection of the house against breaking and are installed most often together with cut-in devices. Lack of the laid on door lock the impossibility of its installation on the steel shutter which does not have special compartments and offices is considered. Despite high strength of core and the padlocks of mechanisms entering design, it is impossible to call these devices the best and most reliable. The fact is that padlocks mean full or partial separation from door cloth therefore to break them by means of physical force or various devices quite really.
Before the choice of the key mechanism it is necessary to study instructions and documents where specify class of protection and product safety. If the lock has class from 2 to 4, then it is supplied with the certificate of conformity, and the first class of this document has no.
Attentively examine type of product outside that there were no rust drips. Before purchase of the key mechanism solve: for what door the lock what thickness of steel sheets was used for production of door is necessary. At thickness more than 4 mm do not buy the bulky lock, it can deform door cloth.
You do not hurry to buy the lock for outer door, carefully consider everything, consult to the knowing people, the purse and choose the necessary product.