One of the most popular types of locks for interior doors is the latch design. Due to various circumstances, this mechanism, like any other, can break down. To fix the problem, it will need to be disassembled. Also, knowledge of the interior door lock device can be useful during its installation. Therefore, the features of the mechanism should be considered even before installation. The device of locks will be discussed further.
When should the lock be taken apart?
The lock device for an interior door with a latch (photo below) should be known to those craftsmen who want to repair such a mechanism.
This is a fairly simple job, but it does require some attention. It is necessary to disassemble the lock, based on knowledge of its structure, in the following cases:
- Mechanism stuck. Sometimes due toshrinkage of the door leaf when closing or opening the door, certain problems arise. Also, periodically the lock will need to be lubricated to avoid jamming. In this case, it is also necessary to know the device of the lock of the interior door with a latch.
- Breakdown. Over time, the parts of the mechanism wear out under the influence of friction and other adverse factors. Even a new lock can break quickly if handled roughly. A breakdown 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 need to be changed.
- Permutation. If a new interior door has been installed, you can install an old lock on it.
- Lost key. If the system is complex, a new lock must be installed. To do this, the old structure is dismantled. Otherwise, it will be impossible to enter the room.
In all these cases, you need to know how such a system works. Otherwise, you can damage, break the current lock.
Varieties
The door lock device of the interior door may differ slightly according to the type of product. There are the following types of interior locks:
- Falevye. The tongue in the design, which locks the door, has a beveled shape. He enters the recessopposite side. The tongue is mounted on a spring, which allows it to be drawn into the landing hole when the door is closed. Once in the recess, it stretches forward. To open the door in the presence of this mechanism, you will need to turn or press the handle. This is a fairly common locking device.
- Roller. This type of construction is used for interior doors with spring hinges. Here, instead of a tongue, a roller is installed. It is also mounted on a spring. When closing the sash, it enters the corresponding recess. This is how the door is fixed. If you pull the handle, the roller will spin and pop out of the recess. This will open the door.
- Magnetic. This is a simple design. The lock device of the interior door with a magnetic latch allows you to use this variety, for example, in a nursery. There is a magnet on one side of the door and a metal plate on the door frame. 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 fail lock.
- With lock. In this case, when using the latch, you can close the door. It cannot be opened from the opposite side. The device of the interroom door lock with a latch is suitable for a bathroom, a toilet. The latch can be located on the handle or under it. It can also be installed in a separate outlet.
Simple construction device
The interior door lock is characterized by relative simplicity. Designs that include a latch are the simplest, most 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 a tongue. They are located in locks that are installed in living rooms. Most often they are mounted on the door leaf of the bedroom or living room, as well as the kitchen. The possibilities of a latch in a simple design are rather limited. However, they will help the door leaf not to open. The sash will be in the closed position.
The simplicity of such a lock is its advantage. Even if the mechanism is jammed, such a door will be relatively easy to open. Repairs can also be easily done by hand. If the design is more complex, a more serious intervention in the design will be required to fix the breakdown.
The presented simple mechanisms perform the functions assigned to them in living quarters. They cannot protect against serious intrusions, but this is not required for such a scope. In such a mechanism there is no secret that could be opened with a key. But by turning the latch, it will be possible to fix the door tongue in the required position.
The interior door lock handle device of the presented type is also special. It may have a latch. By pressing the handle, you can remove the tongue from the seat on the loot. The cost of such locks is relatively low. Therefore, such handleslatches are in high demand.
Latch with latch
The interior door lock device can be more complex. If a latch is provided in the design, this design is more perfect. In such a device there is not only a tongue, but also a special mechanism. It locks the latch in the desired position. The tongue is responsible for opening and closing.
The latch holds the door in the closed position. This locking device allows you to completely close the sash from the inside. If such a mechanism jams, it will be quite difficult to disassemble such a lock. Its main task is to keep the door leaf in the closed position.
The locking mechanism is mounted in the bathroom or toilet. Quite often, such locks are installed in offices, in offices. It is the purpose of the premises that often determines the choice of the castle.
Since it is quite difficult to open a mechanism with a lock, it is recommended to purchase a mechanism of an average and high price category. Cheap locks can quickly fail, leading to many problems. When buying, you need to pay attention to how the tongue moves. It must move smoothly. Otherwise, the product is of poor quality. The mechanism for returning the latch to its original position also requires attention.
The lock device of an interior door with a latch may be different. It depends on the type of handle, how it is attached to the canvas. In this case, the locking mechanism can be push-button or lever. The second of these options can often be found on sale. They are more comfortable and more reliable.
The main parts of the mechanism
Considering the interior door lock device, its main elements should be noted. This will help fix the mechanism.
Basic kit includes the following parts:
- Castle. This is an internal mechanism that blocks the sash inside the opening. The main element of the castle is the crossbar. This is the latch or fail tongue.
- Pin with four edges. He protrudes out of the canvas. With the help of this part, the internal mechanism is set in motion. The pin connects to the handle, regardless of its configuration.
- Handle. It is pressed or turned to open or close the door.
- Decorative overlay. This design element covers the fasteners, giving the handle an aesthetic look.
- Mate. This item is on the box. The counterpart is a plate that covers the hole in the loot. It has a groove for a faux tongue.
After disassembling these details, you can find the cause of the malfunction. Having eliminated the breakdown, you can assemble the structure in the reverse order.
How do I disassemble a lock with a handle or latch?
Mechanism with a handle has a relatively simple device. For inserting locks into interior doors, this system is most often chosen. There may be a latch without locking or a more complex mechanism. A key may even be used here.
To repair the fittings, you must first remove the handle. To do this, unscrew the screw, which is located on the bottom or side of the handle. To do this, use a screwdriver. Some handles will require a hex wrench.
Next, it will be possible to dismantle the overlay that covers the fasteners. The screws must be unscrewed with a screwdriver. If you have a screwdriver handy, you can use it. The handle is removed together with the axle pin. This will allow access to the lock mechanism.
You need to unscrew the plate, which is located on the end. It is held by 2 to 4 screws. This will allow you to remove the tongue and all other parts of the mechanism. They are just pushed inward a little. The inside of the mechanism can be reached through the hole where the handle was previously mounted.
The interior door lock device 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.
The end plate must also be unscrewed, and the internal structure is pushed through the hole from the handle.
Complex lock repair
Knowing the interior door lock device, 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 such locks includes lever and cylinder.
The second of thesemechanisms can be removed from the door by unscrewing the end plate. Next, you can dismantle the front part. Using a screwdriver, carefully move the lock. The internal mechanism can be removed from the seat.
The design may provide for the fixation of the larva. It will need to be turned a little with a key. It is necessary to set its position so that it does not interfere with the movement of the castle. Care must be taken as internal parts may be damaged.
Level 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 hand. You can pry it off with a screwdriver. You also need to act carefully, as you can damage the internal parts of the mechanism.
Magnetic lock
Some features have a magnetic lock device for interior doors. This is a fairly inexpensive type of mechanism, as they have a simple design. They are simple and comfortable to use. There are no moving parts in the design.
There is a ferrite core inside the magnetic lock. It only works when the sash is closed. On the reverse side is a bar that has a reverse charge. It must be in the correct position. The tongue in this case will not extend from the end.
The mechanism in this case is triggered by a magnet. To open such a door, you need to change the location of the lever. He controls the tongue. Heattached with a magnet to the opposite hole. Since the device of such a lock is very simple, there is practically nothing to break in 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 with an example. To do this, you can study the device of the Apex lock for interior doors. Its most popular variety is the overhead model 5300-MS. In this case, it is not necessary to prepare a hole in the end of the door and the hatch.
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 response plate is installed on the sash. Here you also need to apply the appropriate markup.
The stencil is then glued to the surface. It will allow you to determine how many holes will need to be made for installation. You also need to determine the desired diameter of the fasteners. Next, you can install the counter plate.
When all dimensions are rechecked, installation is carried out. First, the counter plate is mounted. After that, the operation of the locking mechanism is checked.
Electronic locks
Electronic locks have the most complex and high-tech mechanism. 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 from 0 to 9 are indicated here. First, a code is entered into the program. The system will recognize a certain combination of numbers. You will need to enter a password, as well as turn the key. If such a lock is installed for an interior door, it provides for blocking the key if the password was entered incorrectly.
The electronics are powered by the charge of the built-in battery. If she sits down, the door can be opened 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 should be entrusted to professionals.
