Manufacturers make different models locks that have differences in design, degree of secrecy and installation option on the door leaf. Latches on door locks increase functionality and add convenience in operation of locking mechanisms. The simplest device allows you to fix or block the door with outside rooms without the need for a key. Such locks can be found everywhere - on interior and entrance enclosing structures, in offices and residential buildings.

Types of door locks

Latches are installed on any types of locking mechanisms:

• level;
• cylinder;
• electromechanical;
• code;
• electronic;
• combined.

The lever lock is equipped with figured plates, which together form a secret mechanism. They are considered ideal option for entrance doors made of steel. By the number of teeth located on the beard of the key, you can determine the number of slip plates in a closed box - there will be one less of them. In such locks, there is often a latch.

basis cylinder mechanism is the so-called larva, with cylindrical elements located in it or, as one of the modifications, disks. Door locks are unlocked with a key when the secret combination matches the recesses on the key. The latches in this case can be located in the same housing, but separately from the crossbar, and open the door when the handle is pressed. Quite often, both functions are performed by a single tongue of the locking mechanism, completely hiding when the key is turned with outer side door or when changing the position of the turntable from inside the room.

rack models door locks they are not equipped with latches; they are installed extremely rarely in apartments due to the inconvenience and low level of protection.

In electromechanical, code and electronic locks the function of the locking bolt is performed by the latch. From the outside, it opens with electronic keys, dialing a code or after giving a command from the control panel, and from the inside - by pressing a button or acting on a lever located directly on door lock. The sash slams due to the beveled shape of the latch. Electronic and electromechanical locking devices are connected to electrical network or battery.

Door locks with latches are both mortise and overhead. The first group of locking mechanisms is located inside the web, so they do not affect appearance doors. Such products are much more reliable than overhead models, but their installation is associated with certain difficulties. The second group of locks is completed with decorative metal casings, and they are fastened with screws on the door leaf from the inside of the room. From the outside, the mechanism is opened with a key, and from the inside - with a lever or a rotary turntable.

Types of latches

The simplest locking devices in the form of latches are installed only on swing doors. For sliding structures produced a different type of fittings.

The function of the latch is to close the door leaf without using a key. The convenience of its use on external doors lies in the fact that the room, even due to forgetfulness or absent-mindedness, will not remain open. But this is also the disadvantage of latches that are not equipped with handles. Quite often there are cases when tenants, leaving the apartment, accidentally slam the door without taking the keys with them. And it’s good if there is no boiling kettle left on the stove or one of the adults remains inside. In emergency cases, you have to call locksmiths or employees of the Ministry of Emergency Situations.

The advantage of the latches located on the interior and office doors, is the counteraction:

• accidental opening of the door leaf due to drafts;
• movement of the canvas under weight own weight as a result of an incorrectly set box;
• spontaneous opening of the opening in other situations.

Door latches are:

• magnetic - keep the door closed without even locking it;
• fall - have a spring tongue of an oblique shape;
• roller - equipped with spring-loaded rotating rollers;
• sliding - are both latches and locking bolts;
• electromechanical and electronic - controlled remotely, using programmed keys or cards.

The first three types of latches are installed both on interior and on external doors including street structures. Sliding latches are intended for entrance doors to apartments and offices, and electromechanical and electronic ones are found at entrances to entrances, street gates and protected objects.

Latch Latches

The door, on which the lock with a latch is installed, cannot be slammed on its own. It closes with some effort - with a push, draft, human impact on the doorknob, or as a result of a sharp gust of wind. Correct installation the locking mechanism implies the impossibility of opening the door leaf without using a key, a turntable, push or rotary handles, called knobs. Handles can be located only on one or both sides of the canvas.

Angled tongue door latch when the door is closed, it slides over the surface of the striker and hides inside the lock.

Fall latches are available with latches that allow the spring-loaded tongue to be retracted inwards lock box, and without clamps. Mechanisms can be equipped with two latches, one of which functions independently of the crossbar, and the other is sliding, that is, it is combined with it into a single whole. Locks with latch latches are considered the most common both in everyday life and in public and administrative buildings. Push and turn handles often become a design element of the inside and outside of the door.

Magnetic latches

Locks with magnetic latches are most often installed in offices so that an unlocked door can be kept closed, while maintaining sound insulation, without letting heat out of the room. winter period time and keeping cool in the heat coming from the air conditioner. The flap with magnetic latch opens and closes effortlessly. One part of the device is located on the end of the web, and the other, with opposite polarity, is at the same level, but on the vertical stand of the box.

The simplest models of magnetic latches can be seen on furniture cabinets. More complex mechanisms with a lock, when closed, draw a locking bolt equipped with a ferrite core into the opening of the striker plate. Thus, the door is locked without the possibility of opening it from the outside, but only if there is no push or rotary handle on the outer surface of the leaf.

Roller latches

A rotating roller or, as an option, a tongue beveled on both sides, can be located both in the lock itself and on the reciprocal plate. When the door is closed, the element is hidden in the recess intended for it, being held in it by means of an internal spring. The roller is in no way connected with the locking bolts and works as an independent unit. Such latches are easy to use and can also be installed on pendulum blades that swing open in both directions.

The disadvantage of roller latches is the impossibility of fully locking the door. In this case, you will have to use a key or a turntable.

Latch latches

A feature of these models of door locks is the combination of the latch and bolt functions in one structural element. The door handle is not provided in the mechanism, so you can open or close the door:

• outside - only with a key;
• from the inside - using a turntable or lever.

The latch bolt is almost always equipped with a latch that holds the spring-loaded element of the mechanism in a hidden position. This brings certain conveniences if you need to exit to the stairwell or the street without a key. But it should be borne in mind that the door leaf in this case can always open spontaneously.

Electromechanical and electronic latches

On the entrance doors it makes absolutely no sense to install them in an apartment, since in the absence of electricity or an accidental discharge of the battery, the latches can either lock or unlock. Their purpose is to be able remote control when the entrance is constantly monitored, alternative power is provided, or situations are foreseen with a decrease in access restrictions in case of force majeure.

In fact, modern electromechanical and electronic door mechanisms are reliable and safe, but their installation is expensive, and operation has its own characteristics. They are divided into three main types:

• normally open. The latch blocks the door leaf until the power supply is turned off. At the moment of interruption of the current, the tongue is hidden, and the door opens;
• normally closed. The mechanism is driven by electrical voltage. At this moment, a characteristic buzzer most often appears;
• with locking function. The latch is unlocked after current is supplied to it from the button. In this state, it remains even after removing the voltage from the coil, but until the door is opened once.

The principle of operation of the first two types of door latch locks is opposite to each other. Due to their specificity, normally-open mechanisms are in demand in places associated with increased emergency situations or frequent power outages. They do not impede evacuation, and in the absence of current, the doors remain open.

Normally open latches are installed on the entrances of residential buildings.

Opposite models of mechanisms that function normally closed principle, are convenient in that when the battery is discharged or the power is turned off, the door remains locked and the object is protected. Such latches can be powered from both direct and alternating current.

Caging is the ability to fix the mechanism in a certain position. In latches, the function of arresters is performed by special pins. After pressing and releasing the button, the tongue retracts, after which it can be held open for any amount of time. The door will lock immediately after being used.

Installing a latch lock

Overhead products are mounted quickly and easily. The lock itself is screwed to the sash from the side of the room, and the reciprocal plate - on door frame. The relative position of the parts must be such that the tongue and the bolt can enter the holes without hindrance.

With a mortise lock, the situation is more complicated, but not so much that home master wouldn't be able to handle it. For work you will need:

• electric drill with drills and a crown for wood;
• cutter, but it can be replaced hand tool- chisel;
• screwdrivers;
• hammer;
• square, knife and pencil (marker).

If the lock is equipped with a handle, then the place of its installation is chosen based on ease of use. In this case, the locking mechanism is mounted at a height of one meter from the floor. In addition, if the canvas has frame structure, then the presence of solid bars in this zone should be clarified. The selected place is verified with a square and outlined with a pencil.

A hole is drilled in the door leaf, after which it is selected with a chisel to right size. Under the handles, using a crown on wood, a through hole is made in two steps. At the first stage, a hole is drilled, but not to the full depth, but until the guide drill appears. After that, you should continue to work on the opposite side.

Compliance with the technology will allow both surfaces of the sash to be kept neat, without defects.

The mortise lock is inserted into the prepared niche and fixed to the end of the door leaf with screws. Next, install the handle and decorative lining. At the last stage, they begin to mount the striker, under which a sample is also made.

Restless times and the presence of intruders force residents of private houses and apartments to avoid unauthorized entry. To strengthen the home, most often they put metal door and secure lock. The market is replete with various types of protection. But the lock-latch for the door remains invariably popular. It has various modifications.

Lock-latch for front door

It should be not only outwardly attractive and comfortable. Its most important quality is reliability. It must be durable and break-resistant. Therefore, a simple lock-latch for the door will not work for entry.

To choose high-quality and reliable protection, you will need the advice of a professional. Masters advise to put several types of locks, they have a different structure and are opened in different ways. There is such a thing as burglary resistance. It is she who determines the reliability of several varieties, they differ in the method of device, material, degree of protection.

Types of castles

Mortise. From the name it follows that this lock enters directly into the door array, in a specially designated place a locking mechanism is inserted into the recess. Such an element is installed in the case when the room will be locked on both sides. It consists of a lock block and a cylinder. The latter are of the key-key type. This is when the door is locked more often on one side only, the "revolving key" is used for frequent locking.

Overhead. This type attached to the door with screws from the outside. This castle does not look very aesthetically pleasing. But in certain cases, it is simply irreplaceable.

Mounted. This type fastens the eyelets located in the door and the jamb together.

Types of mortise elements

To choose the right latch door lock for interior spaces, first of all, you should pay attention to how smoothly the tongue walks. Further, whether the thickness of the canvas is suitable for the selected lock, the presence of wings on the striker plate will be a plus. They will provide better fixation of the door.

Suvaldny. secret mechanism consists of levers. The reliability of the castle directly depends on their number. This lock is also called a safe. This is very reliable appearance, although it has a drawback due to large size keys. To ensure reliability, a lever lock may have false lever grooves, key secrecy, a master key recognition system, and hard springs.

Cylinder. In them, the interchangeable larva has the shape of a cylinder.

It is small in size, the keys of such a lock are flat and have a higher level of secrecy. The larva itself is easy to mount and replace. Many prefer this particular type as a lock for the front door.

with latch: types

Cruciform - a rather simple element that can only be used in interior or office space. It got its name from the internal mechanism and the key that has this shape.

English - the principle of opening is the correct alignment of all cylinders.

Disk. It consists of several cylinders with a pattern that is on the key.

- Abloy. Its reliability is due to the fact that a loud noise is emitted during the opening.

pin. The reliability of this type directly depends on the presence of a protective nozzle. She becomes reliable protection from knocking out, also increases the volume when opened. The keys of this model have laser perforation.

Eurocylinders. Also great importance has a protective cover. It is unlikely that such a lock will open with a master key. It has many different combinations. The keys of such a mechanism may have additional protection in the form of magnetic inserts or floating elements.

Electronic. Such locks are powered by an electrical network or power supply. They use cards instead of regular keys, or you just need to enter the correct combination of numbers.

To really be sure of the security of the house, it is advisable to install several types of locks at the entrance. For example, combine a mortise cylinder lock with a latch with an electronic or lever lock.

Interior door lock

They are usually put on the front doors, for the safety of the house.

Indoor locks are generally not required. Interior passages may have different purpose, these are the doors to the sanitary facilities, and office rooms. To close them, a latch handle with a lock is very convenient to use.

Latch - element mortise lock. She is the one who keeps the door closed. The lock-latch allows you to close the door without a key. At the same time, it does not allow the door to open under its own weight.

Types of latches:

Mechanical (faleva). The most common option. For such a latch, the tongue is retracted inside the door by pressing the handle, and upon contact with door frame enters a special recess, which fixes the door. Such a latch can be forcibly retracted into the lock to prevent slamming. This is the so-called. Such fittings are best installed in bathrooms or bathrooms.

Roller. This option is mounted on a notch. To open the door with such fittings, you do not need to make an effort, it is even available little child. Very advantageously, this view will be applied to where a simple click opens the canvas in any direction. Such a lock-latch finds its application for drawers, shelves and cabinets.

Magnetic. This type is only gaining popularity. A similar latch for a door is more expensive than analogues. She has her own advantages. The main thing is noiselessness. It is good to install it where silence is needed. For example, in the bedroom or nursery.

Another plus is high durability and wear resistance. It is also the most aesthetic appearance latch - the tongue does not peek out of the door. The mechanism itself is very simple, it consists of two bars, one of which is attached to the box, the other directly to the door.

When they are connected, they are magnetically attracted to each other and securely hold the canvas. When opening such a latch, it will not provide resistance. You can often see such a mechanism on various cabinets, cabinets, a lock-latch for drawers is indispensable various types and appointments.

Latch-latch. This type is advisable to use in rooms where there is no need to lock with a key.

sliding door lock

This type of interroom locking is not very common. To sliding doors they were well fastened when closing, a “harpoon” type lock-latch is installed on them. Its name is associated with an internal mechanism that looks like a hook.

Latches on electronic locks

An innovation in door locking is electromechanical latches. They work with a remote control.

This best option for work spaces. On the one hand, the door opens with a key or remote control, on the other - simply by pressing.

They, in turn, are divided into:

Normally open (such a latch is closed while receiving power);

Normally closed (the element will open only when it receives an electronic signal).

This is a progressive type of latches that competes with fall latches.

What kind of latch for the door to choose?

There is no definite answer, but numerous reviews indicate that a lot depends on the manufacturer.

The price and quality of the materials of the product will be associated with this. It is not worth saving if the declared quality is appropriate. The choice of fittings and locking mechanism should be approached responsibly. Those who used accessories not in the kit, but from different factories, leave feedback about the difficulties in operation. There are gaps and creaks. Be sure to check all the details of the design before buying. Right choice will please long time and will not require replacement.

So, we found out what constitutes such an element as a door lock with a latch.

If you arrange a farrow among people by asking them a question: what can you tell about doors? Most of them will only answer that they are entrance or interior, and metal or wood is used for their manufacture. That's all the knowledge, in their opinion, other information is not so important to delve into the details. They don’t even know that when choosing, they take into account a lot of details and nuances, without which it is impossible to purchase a high-quality and reliable product. You should carefully approach the choice of locking devices, this component of door fittings ensures the safety of property and human life.

The castle is an important component of the entrance and interior structures. But you can install both a lock mechanism and a latch on the door. In addition, today all leading manufacturers of door fittings prefer to install on interior design two at once locking mechanism- full lock and latch. Considering tastes and needs modern people, on the market great amount interesting offers, this, of course, cannot but rejoice, but such a variety of products can confuse even the most sophisticated buyer in the right choice. To prevent this from happening, we will consider the main types of locking devices.

Types of latches

Complex locking devices are not so often installed on interior doors in residential premises; standard latches are suitable here. But locking devices with a complex mechanism are used where it is necessary to restrict entry to specific premises, these can be companies and other objects. public purpose. For residential premises, it is better to install latches on interior door structures, which are:

• Latch locking device, the design of which provides for a mechanical tongue, one side of which is slightly beveled. This shape of the tongue is convenient in that during the closing of the sash, it enters the groove located on the canvas and creates an obstacle for arbitrary opening of the door. As soon as he enters the reciprocal groove located on the bar, a soft click will be heard, this indicates that the door leaf has closed. To open it, you need to turn the handle, such an action will make the mechanism work - the spring will compress and the tongue will be released. This mechanism is equipped with a door handle, which can be rotary or push type.

File latch

• Snap fasteners. The principle of operation of such devices is very similar to locking mechanisms, only here the function of the key is performed by a special latch that prevents the door leaf from opening only with the handle. The latch can be installed on the same bar as the handle, or separately at a distance.
• Roller latches. More often they are mounted on interior wooden or other canvases, which are equipped with spring hinges. At the time when the sash is closing, the roller enters the groove and secures the door in the closed state. If you need to open the door, you can not even press the handle, pull the sash towards you. This type of latch is recommended to be placed on the door to the nursery.

roller latch

Magnetic types of latches. Such a device works silently, no click is heard during the closing of the door leaf, as happens when using a latch latch. The main advantage of the magnetic latch is that installation is much easier than that of analogues, moreover, there is no need to carefully adjust the blade here. interior door in the box, such a latch functions properly even if the canvas is slightly skewed. Design magnetic lock simple and consists of two elements: a metal plate and a magnet. Although there are other varieties of magnetic latch, their mechanism is more complex, for example, a locking device equipped with a moving magnet.

Magnetic door latch

• Ball retainer. It must be said right away that such an option locking device on the this moment is the most inexpensive and belongs to the line of budget products. A ball latch is installed in interior doors that do not require long-term locking. The latch is equipped with a movable mechanism, so there is no need to purchase a special door handle. The principle of operation of the ball mechanism is simple - you need to slightly pull the handle and push the door. Such a device holds the sash in a small draft, but it opens easily, even if you gently push the door.

ball detent for door

Advice! For doors inside a house or apartment, you can use latches that are not equipped with a latch or locking devices with a latch that allows you to close the sash and will not allow you to open it from the outside.

Installation

To fulfill self-assembly latch handles, need to cook special tools, here is the list:

• Electric drill.
• A set of different drills: for wood, feather drills, crowns for wood.
• Screwdriver, but a screwdriver is better.
• Hammer.
• Sharp knife (carpentry).
• Two chisels. One should be narrow, the other medium. We will need these tools to complete the work on sampling under the bar. Instead of a chisel, you can use a cutter.
• Strong awl.
• Square.
• Pencil.

Installation of such products should be carried out at a height of one meter from the floor. The fact is that manufacturers provide at this height in door structure a block of wood, it gives rigidity to this place for mounting the lock.

Next, measure the distance from the bottom of the sash, for this we have a square and a pencil. We draw a line on one and the other side of the canvas. Then we take the latch and lean against the door, this will allow us to determine the future location of the handle. Now you need to drill holes. Experts recommend doing this from the end of the door. This will help in further work, when you drill the door with a special wood crown (fifty millimeters), the chips will not clog the teeth of the tool, because they will fall into the hole already made.

How is the self-assembly of the handle - latches

Now you need to take a pen drill and drill a hole in the canvas. Align the resulting hole to required size, for this purpose we use a chisel or a drill. To the end of the sash we impose a bar of the locking device and then cut through the veneer along the perimeter. For this work, a carpenter's knife is used. Next, we perform a sample using a chisel for mounting the bar. This action should be performed so that it is located at the same level as the wooden canvas. At this stage of installation, it is necessary to drill a hole (crown) on the canvas on one side and the other for mounting the door handle.

Attention! It is better not to do in a wooden casement through hole because it may happen that the crown will damage the veneer on the sash surface on the opposite side.

Once the two holes are made, they need to be leveled with a chisel (narrow). Now you can mount the latch bar. The bar is fixed to the door leaf with self-tapping screws. To mount the handle, you first need to disassemble, one locking bolt is carefully unscrewed, and the other is slightly loosened. Next, put the handle on seat and fix. Then you need to install the second handle, and then tighten the previously removed screw. Now it remains to fix the handles and put decorative special lining. At the last stage of work, the installation of the reciprocal bar is carried out. For clarity, how the latch handle is installed, watch the video:

Sections of the article:

Most often, locks are installed only at the entrance door blocks. In other cases, latches for interior doors are used. Locking mechanisms with key cylinders are more often used in office premises. A lock with a latch is relevant for the most part in the bathroom. Therefore, it is necessary to choose the most suitable products for interior door panels.

Types of latches

For use in interior doors, latches without a latch are installed, which allow holding the leaf in the closed state without locking it, or products containing a latch and limiting the possibility of opening the leaf from the outside.

There are such types of latches:

• Fall, having a mechanical reed element;
• With the presence of a latch;
• roller;
• Magnetic.

Latch Latches

A design feature of such mechanisms is the presence of a beveled tongue. When closing, the tongue falls into a special hole with grooves that prevent spontaneous opening of the door leaf. At the moment of passage of the grooves and hitting the tongue on the opposite side, a characteristic click is heard.

The opening of the door leaf is carried out by turning the handle, which sets in motion the internal spring mechanism. As a result of this action, the internal spring is compressed and the reed element, pulling inwards, is released from the grooves.

Such a latch for an interior door is quite popular and is mounted on push and turn type products. rotary knobs in most cases, they have the shape of a circle or oval. Such products are called handles-knobs.

Door handles with lock

Based on the principle of operation, such latches are very similar to locks. A design feature is the use of a latch with a special twist as a key. The product can be installed both on the bar itself door handle, and at a short distance from it.

Thanks to such a fixing element, opening the interior door leaf becomes impossible. However, there is an exception. In the so-called sanitary latches for interior doors, it is possible to open the door from the outside. This feature was created for security purposes.

Roller

In most cases, such latches are used in interior door panels mounted on hinge mechanisms with springs inside. In the process of closing the door leaf, the roller element falls into a special recess on the striker plate. This keeps the door locked in the closed position. Returning the canvas to the "open" state with such a latch mechanism is quite simple. To do this, the canvas with a little effort stretches towards itself.

Such devices, by their properties, are perfect for mounting in the doors of children's rooms. Also, similar fittings will become best solution for pendulum-type door panels, as it will allow you to easily open and close the door in both directions.

Magnetic

These products are virtually silent. Instead of a tongue or a ball, they have a special magnetic element. The striker also contains a magnet insert. Closing of the canvas is made thanks to physical properties products are polar attracted.

The advantage of this design is the independence of the quality of the latch from the accuracy of mounting the web. Even with a significant skew of the door, closing will be carried out quite efficiently. Silent Latches set for various kinds interior doors, have a fairly simple appearance and principle of operation. However, there are products with the function of extending the magnets. Such devices are similar in principle to latches with a retractable tongue.

Product selection

In most cases, the choice of mechanism is based on visual preferences and based on functional features products. However, in addition to this, attention should be paid to the reliability of the design and the manufacturer. Having a manufacturer's warranty is also an advantage.

Mounting procedure

For installation, you need to prepare a number of tools. So, without fail you will need:

• Drill with drills;
• Screwdriver;
• Chisels small size either a fraser;
• Hammer;
• Carpentry knife.

In addition, a pencil and a ruler, a square or a protractor, are needed for marking.

The latch is installed at a height of 1 m from the floor. The choice of such a distance for installation is due to the presence of a stiffening bar installed by most manufacturers in the interior door in this place. For the accuracy of drilling a hole for the mechanism, a double-sided marking of the canvas on the end part is performed using a pencil and a ruler. After that, the mechanism itself is applied to the canvas and a mark is made on the future location of the handle. Standard size latch mechanism is 6 and 7 cm.

Taking into account the advice of builders, it is best to start the process of drilling a hole on the end of the canvas. And when a through hole in the door is drilled using a 5 cm crown, the chips will freely exit through the existing gap, and not clog into the drill.

Initial drilling is carried out using a pen-type drill at a distance equal to half of its blade. Subsequently, alignment is carried out using conventional drill and fraser, or chisels right size. A latch mechanism bar is superimposed on the end part of the door for marking. The edges of the part are circled sharp knife to determine the place of removal decorative coating doors. With the help of a chisel, the place of the future installation of the plank is hewn to such an extent that after the installation of the lining, the end part is absolutely even along the entire length.

After that, holes for the door handles are drilled. It should be borne in mind that in the process of making a through hole, it is easy to damage the veneered surface with a one-sided impact. Therefore, as soon as the tip of the drill appears on the opposite side during work, the drill must be turned off and continue working from the opposite side of the door leaf.

When all the holes are drilled, they are aligned with a chisel. After this procedure, it is allowed to insert the product into the finished niche. A bar is superimposed on the end part, which is fixed in place with the help of self-tapping screws of a suitable size. To install the handle itself, it must be disassembled. This is done by fully unscrewing one of the locking screws. The second screw is easy enough to loosen.

After the door handle is inserted, loose fasteners are tightened. Such actions are necessary to hold during installation in correct position center pin. Then a second door handle is mounted on the opposite side and the locking screw is screwed back into place. After that, the handles are fixed on the surface of the canvas with the help of self-tapping nails and decorative elements are put on.

The final stage of mounting the latch for an interior door is the installation of a “return” limiting plate on the frame. For correct installation the door is covered until touched by a tongue or other element of the frame leaf used in the latch. After that, with the help simple pencil the marking of the place of movement of the part is carried out along the end part of the structure.

Using a ruler, the distance from the front side of the web to the middle of the latch mechanism is calculated. Based on the data obtained, the exact position of the tongue on the door frame is marked at the moment it is completely closed. In this place, a hole is drilled of a width and depth suitable for the tongue.

Without fail, it is necessary to carry out the squeezing of the location of the striker itself. It, like the latch pad, should form a single flat plane with the surface of the frame. After preparing the box with the help of self-tapping screws, a return limiting plate is fixed on it.

In some models, door latches are supplied with special plastic linings for installation in the interior door frame. This cell allows you to protect inner part latch mechanism from possible chipping from the tongue hole of the frame during use.

Among all the elements that interior doors can be equipped with, one should highlight such as latch handles. They are distinguished not only by aesthetic design, but also by practicality. These products are necessary in order to securely fix the sash.

If there is a latch handle in the design of the interior door, cases of independent opening and closing of the door caused by a draft are excluded. This is facilitated by the design and principle of operation of this element. Special attention deserve the characteristics of the product, among which should be called versatility, serviceability and the absence of problems in use.

What are latch handles?

The main element of the mechanism under consideration is a latch device that provides mobility to the latch, as a result of which, when turned or pressed, it locks the door structure.

Based on the type of mechanism used, the following types of latch handles can be distinguished:

Purpose of the latch

Currently on the market there are a large number of models similar products, which differ noticeably from the first samples of these mechanisms in terms of their design. However, both in those and in others are still their main function is, which boils down to holding the sash in a closed but not locked position.

The owner can appreciate this option when an interior door separates a heated room from an unheated one. If the interior door will fit as tightly as possible to the sash, then this help to minimize heat loss and better protected from the penetration of extraneous noise. Also, this element will be very useful in summer months when the temperature rises to critical levels: if the room is sufficiently well insulated, then the air conditioner will take less time to create a comfortable thermal regime in it, for which it will not need to increase the intensity of work.

You should also pay attention to this important point as a risk of injury. Situations are not uncommon when a draft causes an interior door to open arbitrarily, which can cause injury to a child or an adult. If there is a handle with a latch in the design of the interior door, this is excluded. It is also important that this accessory is not able to change the appearance of the interior door because it is carefully disguised.

How to dismantle the handle?

Having resolved the issue with the preferred fittings for the interior door, you can start dismantling and then installing a new device.

During the dismantling of the handle with a mechanical lock the first step is to remove the screws what a screwdriver is used for.

After that, it is necessary to pull out the lining system, which will allow you to remove the product itself, along with the rod that holds the mechanism inside the web.

Need to take wrench, unscrew the rod, and then pull the spring-wrapped rotary mechanism out of the handle. To identify the cause of the malfunction of the mechanism and determine your further actions, you should carefully examine the handle. Although several methods are known to allow the dismantling of a rounded handle with a latch, we will nevertheless focus on one of the simplest and most effective.

1. It is necessary to take a flat screwdriver and remove the tab on the part of the door on which the device with the lock is located. You can simplify the task of dismantling if you push on the open stopper and at the same time begin to pull the handle towards you.
2. Using a screwdriver, you need to unscrew two screws, and why remove parts of the latch handle from the surface of the door.
3. After completing this operation, you should already pull out the mechanism itself with the lock. To do this, unscrew the screws that will help release the locking latch.

Installing a door handle with a latch

The process of installing a new handle should be approached with the utmost seriousness, since Here the risk of error is much greater. than when replacing it. The fact is that during the replacement, you should know what the dismantling procedure was. In this case, you will have to perform all the steps in reverse order. If you have installed new interior doors, then you will have to make every effort to install the latch handle strictly in accordance with the technology.

In the process of installing fittings with a latch mechanism on an interior door, the following main steps should be performed:

• canvas marking;
• drilling a hole;
• mounting and fastening.

Web marking

During the execution of this work, you must act very carefully. To make it easier for you to solve this problem, it is advisable to remove the canvas first interior door. There are models of doors that have contours of places pre-applied by manufacturers. Although it seems convenient, you should not rely on them.

When determining the height at which the handle will be placed, a distance of 80-100 cm should be measured from the bottom of the floor.

After that, you need to select the center of the location of the latch handle. Next, you need to mark on the end part of the structure the place where the tongue of the mechanism will enter. This is done by applying horizontal line and marks the center of the web thickness. The body should be placed in such a way that it cannot go beyond the canvas. Its similar location should be marked on each side.

Hole drilling

To create a hole in which the mechanism will be placed, wood crowns should be used.

To make a groove for the tongue, you must use guides and a feather drill.

To remove the remnants of wood, a chisel is used, which must be worked on, focusing on the lines drawn in advance. It is important to ensure that you do not select more than required. For this from time to time you need to check with the depth of the pocket. You can understand whether you did everything right if, after inserting into the hole, the mechanism plate does not go beyond the plane of the end of the door.

Mounting and fastening

We take the mechanism, place it in the hole made, and then fix its plate with screws. To make it easier for you to screw in the screws, you can pre-make the corresponding grooves. Thanks to this, when fastening the plate with screws, you will be sure that they will go in fairly evenly. Next, they proceed to install the rod, and then begin to assemble the handle.

Using a pen drill, you need to make a pre-marked groove. Here it is important for you to make sure that, being in the box, it will be able to fully exit the latch. If there are no problems with this, then you can start cutting out the outline for the plate using a chisel.

The installation of the mating plate is carried out in the same way as the main body: it follows completely place in the canvas and fix with screws. After that, you can close the door and make sure that they work correctly. interior handles. If the mechanism functions without comment, then this will be a reason to be proud of the work done.

An element such as a latch handle can significantly increase the level of convenience when using an interior door. And here we mean not only an increase in the heat-insulating and noise-insulating characteristics of the room as a result of equipping an interior door with a similar mechanism, but also ensuring security. The fact is that, thanks to the latch handle, situations can be excluded when the interior door unexpectedly hits an incoming person due to a strong draft.

Therefore, the decision to install a latch handle on an interior door seems reasonable. Moreover, any owner can cope with this work. Provided that you carefully familiarize yourself with all the stages of dismantling and installing the latch handle and follow the exact procedure for performing all operations, you can be sure that you will perform this work on high level. Thanks to this, you will be able to take full advantage of this mechanism.