Latch lock for interior door

One of the most popular types of locks for interior doors is a latch design. Due to various circumstances, this mechanism, like any other, can break. To fix the malfunction, it will need to be disassembled. Also, knowledge of the interior door lock device may come in handy during installation. Therefore, the features of the mechanism should be considered before installation. The device locks will be discussed later.

When do I need to disassemble a lock?

The device for locking an interior door with a latch (photo is presented below) should be known to those craftsmen who want to repair such a mechanism.

This is a fairly simple job, but it requires attention. It is necessary to disassemble the lock, based on knowledge of its structure, in the following cases:

• The mechanism is stuck. Sometimes, due to shrinkage of the door leaf, closing or opening the door causes certain problems. Also, occasionally, the lock will need to be lubricated to avoid seizing. In this case, it is also necessary to know the device for locking the interior door with a latch.
• Breakage Over time, the details of the mechanism wear out under the influence of friction and other adverse factors. Even a new lock can break quickly if handled roughly. Damage requires disassembling the lock and replacing the failed part.
• Replacing the lock. This may need to be done if the room has been renovated and the old handle does not harmonize with the interior. You may also need to replace the lock if you need to install a modern mechanism. Due to a breakdown, it will also be necessary to change it.
• Rearrangement. If a new interior door has been installed, you can install an old lock on it.
• The key is lost. If the system is complex, you need to install a new lock. To do this, the old design is taken apart. Otherwise, it will be impossible to get into the room.

In all these cases, you need to know how such a system works. Otherwise, you can damage, break the existing lock.

Varieties

The device of the door lock of the interior door may differ slightly in accordance with the type of product. The following types of interior locks exist:

• Falevye. The tongue in the structure that locks the door has a beveled shape. It enters the recess on the opposite side. The tongue is mounted on a spring, which allows it to be pulled into the landing hole when the door is closed. Getting into the recess, it is pulled forward. To open the door with this mechanism, you need to turn or press the handle. This is a fairly common lock device.
• Roller. This type of design is used for interior doors with spring hinges. Here, instead of the tongue, a roller is installed. It is also mounted on a spring. When closing the sash, it enters the corresponding recess. So the door is fixed. If you pull the handle, the roller will scroll and pop out of the recess. So you can open the door.
• Magnetic. This is a simple design. The lock of the interior door with a magnetic latch allows you to use this variety, for example, in the nursery. A magnet is installed on one side of the door, and a metal plate on the door jamb. When closed, they are attracted. To open the door, you need to slightly pull the handle. The magnet can act as a tongue. In this case, it is movable, which makes the design look like a halyard lock.
• With a clamp. In this case, when using the latch, you can close the door. It cannot be opened from the opposite side. The device for locking the interior door with a latch is suitable for the bathroom and toilet. The latch can be located on the handle or under it. It can also be installed in a separate outlet.

Simple design

The internal structure of the door lock is characterized by relative simplicity. Designs, which include a latch, are the most simple, versatile option. Latch locks are often installed on inexpensive canvases. But sometimes you can find such locking structures on expensive doors.

A simple mechanism has a cylinder and tongue. They are located in the locks that are installed in the living rooms. Most often they are mounted on the door leaf of the bedroom or living room, as well as the kitchen. Latch capabilities in a simple design are quite limited. However, they will help the door leaf not open. The shutter will be in the closed position.

The simplicity of the device of such a lock is its advantage. Even when the mechanism is jammed, such a door will be relatively easy to open. Repair can also be easily done with your own hands. If the structure is more complex, more serious intervention in the structure will be required to eliminate the breakage.

The presented simple mechanisms fulfill the functions assigned to them in residential premises. They cannot protect against serious intrusions, but this is not required for this type of application. There is no secret in such a mechanism that could be opened with a key. But by turning the latch, it will be possible to fix the door tab in the desired position.

The device of the handle of the interior door lock of the presented type is also special. It may include a latch. By clicking on the handle, you can bring the tongue out of the seat on the bottom. The cost of such locks is relatively low. Therefore, such handles with latches are in great demand.

Latch with lock

The arrangement of the door lock of the interior door can be more complicated. If a latch is provided in the design, this design is more advanced. In such a device there is not only a tongue, but also a special mechanism. It locks the latch in position. The tongue is responsible for opening and closing.

The latch holds the door closed. This locking device allows you to completely close the sash from the inside. If such a mechanism sticks, it will be quite difficult to disassemble such a lock. Its main task is to keep the door leaf in the closed position.

The mechanism with a lock is mounted in a bathroom or a bathroom. Quite often, such locks are installed in offices, in offices. The purpose of the premises often determines the choice of castle.

Since it is quite difficult to open the mechanism with the lock, it is recommended to purchase a mechanism of the middle and high price categories. Cheap locks can quickly fail, leading to many problems. When buying, you need to pay attention to how the tongue moves. It should move smoothly. Otherwise, the product is of poor quality. The mechanism for returning the latch to its original position also requires attention.

The device for locking an interior door with a latch may be different. It depends on the type of execution of the handle, the method of attaching it to the canvas. In this case, the locking mechanism may be push-button or lever. The second of these options can often be found on sale. They are more convenient and reliable.

The main parts of the mechanism

Considering the device of the lock of the interior door, its main elements should be noted. This will help mend the mechanism.

The basic equipment includes the following parts:

1. Castle. This is an internal mechanism that blocks the sash inside the opening. The main element of the castle is a crossbar. This is a latch or a fawn tongue.
2. A pin with four faces. He stands out from the canvas. With this part, the internal mechanism is driven. The pin connects to the handle, regardless of its configuration.
3. Handle. They press it or turn it to open or close the door.
4. Decorative overlay. This structural element covers the fasteners, giving the handle an aesthetic appearance.
5. Reply part. This item is on the box. The counterpart is a plate that covers the hole in the bottom. It has a recess for the halyard tongue.

Having examined these details, you can find the cause of the malfunction. After fixing the breakdown, you can assemble the structure in the reverse order.

How to disassemble a lock with a handle or latch?

The mechanism with a handle has a relatively simple device. To insert locks into the interior doors, this system is most often chosen. There may be a latch without locking or a more complex mechanism. A key can even be used here.

To fix the accessories, you must first remove the handle. To do this, unscrew the screw, which is located at the bottom or side of the handle. To do this, use a screwdriver. On some pen models, you will have to use a hex wrench.

Then it will be possible to dismantle the pad, which closes the fasteners. The screws must be removed with a screwdriver. If you have a screwdriver at hand, you can use it. The handle is removed along with the axial pin. This will allow access to the lock mechanism.

It is necessary to unscrew the plate, which is located at the end. It is held by 2 to 4 screws. This will remove the tongue and all other details of the mechanism. They are just slightly pushed inside. The inside of the mechanism can be accessed through the hole where the handle was previously mounted.

The device for locking the interior door may have a latch. The principle of operation of this design is in many ways similar to a mechanism with a handle. First, remove the part from the front side of the door. A screw is unscrewed from the side of the plug. The mechanism must be carefully removed, including from the opposite side.

You also need to unscrew the end plate, and the internal structure is pushed through the hole from the handle.

Repair complex lock

Knowing the device of the interior door lock, you can repair it. Difficulties may arise if you need to disassemble a mechanism with more complex elements. For example, such a lock may have a key. The category of locks include lever and cylinder.

The second of these mechanisms can be removed from the door by unscrewing the end plate. Further it will be possible to dismantle the front part. Using a screwdriver, you need to carefully move the lock. The internal mechanism can be removed from the seat.

The design may include larval fixation. It will need to be turned a little with a key. It is necessary to set such a position so that it does not interfere with the movement of the castle. Care must be taken as internal parts can be damaged.

The lever lock is even easier to disassemble. First, the plate is also unscrewed, and then the mechanism moves to the edge. When a small part of the structure is released, it is simply picked up by hands. You can pry it with a screwdriver. Care must also be taken, since internal parts of the mechanism can be damaged.

Magnetic lock

Some features of the device is a magnetic lock for interior doors. This is a fairly inexpensive type of mechanism, since they have a simple structure. They are simple and comfortable to use. There are no moving parts in the design.

Inside the magnetic lock is a ferrite core. It only works when the sash is closed. On the reverse side is a bar that has a reverse charge. She should be in the right position. The tongue in this case will not extend from the end.

The mechanism in this case is triggered by the action of a magnet. To open such a door, you need to change the location of the lever. He controls the tongue. It is attached with a magnet to the opposite hole. Since the device of such a lock is very simple, there is practically nothing to break into it. Even if the door sags, it can be closed with such a lock.

Installation Features

To establish the presented variety of mechanisms, it is worth considering this procedure as an example. To do this, you can study the design of the Apex lock for interior doors. Its most popular variety is the 5300-MS patch model. In this case, you do not need to prepare a hole in the end of the door and the door.

First you need to mark the installation location of the fittings. This can be done on the vertical or horizontal part of the door frame. The counter plate is mounted on the sash. Here you also need to put the appropriate markup.

Then the stencil adheres to the surface. It will determine how many holes will need to be made for installation. You also need to determine the desired diameter of the fasteners. Further it will be possible to establish a reciprocal plate.

When all sizes are rechecked, installation is carried out. First, the counter plate is mounted. After that, the operation of the locking mechanism is checked.

Electronic locks

The most complex and high-tech mechanism is possessed by electronic locks. They are also called smartlocks. It provides not only the presence of a mechanical part, but also electronics. Such locks can be overhead or external. The principle of operation of such mechanisms is simple.

The lock has a panel on the outside. Numbers 0 through 9 are indicated here. First, a code is entered into the program. The system will recognize a specific combination of numbers. You will need to enter a password, as well as turn the key. If such a lock is installed for the interior door, it provides for a key lock if the password was entered incorrectly.

Electronics is powered by a built-in battery. If she sits down, it will be possible to open the door with a physical key. There are models on sale that respond to a special code card. It will be difficult to repair this kind of locks on your own. This work must be entrusted to professionals.