Consider the mechanisms of modern sofas: types and purpose. Types of sofas: distinctive features and advantages (24 photos) Sofas as the names are laid out

From this article you will learn:

What elements make up the design of sofas

How sofas differ in design and purpose

What are the designs of sofas for unfolding

Usually a sofa is purchased for more than one year, therefore, it is necessary to approach its choice responsibly. New upholstered furniture should fully meet its purpose, be comfortable for the whole family and be in harmony with the interior. That is why, choosing this kind of furniture, you should pay close attention to the design of sofas.

What structural elements are sofas made of

As a rule, when purchasing a sofa, we first of all pay attention to its appearance, namely, upholstery fabric, color, shape, etc. However, when choosing a specific model, it is important to study the design of this piece of furniture, because its quality characteristics depends on how long the sofa will serve you.

What is the design of the sofa?

Armrest. Usually it is made of wood, chipboard, MDF, metal. The armrest can be upholstered in fabric or leather. When purchasing a sofa, give preference to models whose armrests are made of wear-resistant materials (wood, metal, MDF, leather).

Upholstery. It can be a special fabric, leather.

A layer of synthetic winterizer or batting.

Filler- foam rubber for furniture.

Polyurethane foam pad(PPU), which is necessary for increased wear resistance and uniform weight distribution. Such inserts give the sofa orthopedic properties.

spring block- This is the main shock-absorbing part of the sofa design.

Burlap or felt. These materials smooth out the friction of metal on plywood, thereby preventing the appearance of unpleasant sounds.

fibreboard(Fibreboard) - is the base of the sofa mattress.

sofa frame. It can be made of wood, metal or chipboard (chipboard). The frame is a structure that bears the main operational load and determines the shape of the sofa. Therefore, when choosing, pay special attention to the quality characteristics of the tree from which the frame is made. The presence of knots is undesirable, since in these places the wood can burst.

Interlining.

Roller rail. It can be located at the bottom of the box and be made of both wood and metal.

Box or niche designed for bedding.

Extendable part, which is used during the transformation.

Types of sofas by design, purpose, size and number of seats

Direct models are classics. Their main advantage is that the size of the sofa can be selected depending on the area of ​​​​the room. They come with or without armrests, transforming or stationary.

corner sofas are well known and in demand among buyers. They are comfortable and functional, can be installed in various rooms, for example, in the kitchen.

When choosing this model, the question may arise about what to do if you need to rearrange the sofa to the other side of the room, how to properly disassemble the corner sofa. The design of many models for such a case suggests the possibility of reinstalling its corner part. The sides of such a sofa can be either different or the same length.

Modular pieces of furniture can be collapsible and, like a designer, be transformed at the request of their owners. This type of sofa has such a design, thanks to which it is easily modified in accordance with the interior of the room. This advantage will save you from having to buy new furniture in case of a move. The modular sofa is perfect for rest rooms with a home theater.

Island types of sofas are initially rounded, they are most often located in the center of large rooms. Furniture of this type is able to create a unique interior. Their special form is often harmoniously complemented by other furnishings.

All types of sofas according to their purpose can be divided into:

• for the living room;

  for kitchen;

  for the hallway;

  for children.

At the same time, the types of sofa designs are different, in this regard, it is necessary to choose a specific model that will suit you exclusively. Usually the upholstery of the sofa determines its purpose.

For example, upholstered furniture, upholstered in leather or similar cheap materials, is usually intended to be placed in offices or in the kitchen.

Sofas for children's rooms in most cases are covered with colorful, rich, but quite practical fabrics, from which various stains can be easily removed.

There are compact models of sofas designed for two or three people, and large ones for five or more seats. It should be noted that there is no single standard for the size of such upholstered furniture. For example, one factory produces a two-seater sofa, the length of which is 1.6 m, while the other one will have the same length of 1.9 m.

Sofa designs according to the folding mechanism

"Book"

Sofas of this design are transformed into two positions: sitting and sleeping. In order to expand the sofa into a bed, you only need to fold its back back. When unfolding, it does not have to be moved away from the wall, because when installed, a small gap is specially left between the wall and the back.

The design of the “book” sofa consists of two frames, which are made of metal or wood, with fixed spring blocks or other soft filler. The laundry compartment is usually located at the bottom.

Advantages:

long service life;

functionality;

ease of operation;

regular use without breakage and wear.

Disadvantages:

there are only two positions - lying and sitting;

cannot be installed against a wall.

"Tango"

This model of sofas is transformed by the “click-clack” method. And it is called "tango" because the manufacturers simply want to surprise the consumer with an unusual name. Although this design is very similar to the classic "book". However, there is one difference - when laying out such a sofa, there are not only “sitting-lying” positions, but also intermediate ones. The back can be set at the level that is most convenient for you, in addition, it has a box for bedding.

Advantages:

backrest in different positions;

compact size;

after unfolding, a smooth surface is obtained.

The disadvantage is the inability to install the sofa close to the wall.

"Eurobook"

The design of the Eurobook sofa makes it easy to recognize it among the classic models: it unfolds with the help of roll-out rollers that push the seat forward. In the resulting niche fits the back of the sofa.

Advantages:

ease of transformation of the sofa into a bed;

large niche for storing various items / things;

capacity;

the strength of the sofa design.

The disadvantage is that due to the sufficiently large seats on the sofa, people of short stature and children will feel uncomfortable, because they will not be able to lean on the back.

"Dolphin"

This is the most famous mechanism for folding corner sofas. The design of the sofa "dolphin" is quite simple. To transform it, you need to pull the loops that are attached to the section under the seat. You need to pull up and down at the same time. The section moves out and stands next to the seat, creating a spacious sleeping area. The linen storage compartment is located in the stationary part of the seat.

Advantages:

comfortable place to sleep;

simple and easy to unfold.

The disadvantage is a short service life with regular use of the mechanism.

"Pantograph"

This design of sofas is also called "puma" or "tic-tac". She appeared as a kind of "Eurobook", but without rollers for rolling out the seat. Inside there is a large storage box.

In order to expand such a sofa, you do not need to make much effort - just pull the seat up, holding its edge in the middle. Thus, the mechanism will begin to operate, which pushes the seat forward and upward and opens the legs of the support. In the opened niche you need to lay the back-pillow.

Advantages:

comfortable place to sleep;

simple and easy folding mechanism;

rollers without damaging the flooring.

Disadvantages:

high cost of the working mechanism;

pretty wide seat.

"French cot"

The sleeping area of ​​this sofa consists of three sections. In order to expand them, you only need to pull the edge of the seat. For regular use as a bed, this type of furniture is not suitable, because these types of structures wear out quickly enough.

The advantage is the compactness of the sofa when folded.

Disadvantages:

uneven sleeping surface

lack of a box for storing linen;

short service life.

Roll-out sofa

The sleeping surface of this sofa consists of two segments hidden in the body. In order to expand it, you need to pull the bottom part - it will roll forward. You just have to lower the pillows into the opened niche.

Advantages:

durable and reliable design;

comfortable bed;

small assembled dimensions.

Disadvantages:

rollers for rolling out a berth can scratch the floor covering;

bed is low.

"Accordion"

This type of sofa got its name for some resemblance to the musical instrument of the same name. The sleeping place of the “accordion” sofa with this design characteristically spreads forward, leaning on retractable legs. In the initial position, the sofa takes up very little space; in the area of ​​\u200b\u200bthe rear back there is a box for storing bedding.

Advantages:

strong and reliable mechanism;

long service life;

does not require any effort when unfolding.

Disadvantages:

lack of a built-in niche for linen;

The withdrawable mechanism may scratch the flooring.

"Spartacus"

To transform the sofa to sleep, you just need to pull the seat, which unfolds in three steps and stands on mobile legs. Such a mechanism was developed jointly by Russian and Italian manufacturers. This furniture is ideal for sleeping, it is the best sofa design that provides the most spacious sleeping place. In fact, this is a French clamshell, but more reliable, reinforced with a welded metal grill.

Advantages:

reliability and long service life of the unfolding device;

ease of use;

the possibility of permanent use as a bed;

comfortable and spacious place to sleep.

Disadvantages:

lack of a box for storing bedding;

Before laying out the sofa, you need to remove the pillows.

"Konrad", or "Telescope"

You can unfold such a sofa by pulling its lower part: the compartments roll out one after another like a telescope and stand on supports. Such sofas differ from the classic ones in the greater height of the place to sleep.

Advantages:

durable mechanism;

the possibility of daily use;

compact dimensions;

availability of storage space;

favorable conditions for sleep.

The disadvantage is that it is too massive due to the volumetric folding mechanism.

"Sedaflex" ("American clamshell")

Such a sofa transforms like a French folding bed, but, unlike it, it is equipped not with a three-fold, but with a two-fold design and a thicker mattress.

Advantages:

reliable mechanism;

compact size;

quality ergonomic mattress.

Disadvantage: no niche for storing linen.

"Elf"

This sofa has a swivel mechanism. During the preparation of the place to sleep, the armrests are bred to the sides, and a comfortable sleeping place is obtained. By the way, the armrests are adjustable in height and have several positions.

Advantages:

compact size;

comfortable place to sleep;

thanks to the lamellas, an orthopedic effect is achieved;

armrest adjustment.

the place to sleep is in the same place as the seating.

Recliner

The name of this type of construction comes from the English "recline" - sit back. It unfolds through complex built-in mechanisms. Using them, you can adjust the backrest or extend the footrest. In addition, some models have special pillows with vibration massage. The most expensive samples have a remote-controlled electric motor.

Advantages:

ease of management;

the ability to customize ergonomic functions;

comfort in different positions.

Disadvantages:

high price;

no place to sleep.

Sofa with unfolding on the floor

The place to sleep consists of two compartments, which in the assembled position are located inside the sofa body. In order to unfold it, you need to pull the inner edge of the seat up, then forward and towards you. The place to sleep does not imply any supports and is located directly on the floor.

Advantages:

compactness when folded;

the cheapest type of folding sofas.

Disadvantages:

uncomfortable place to sleep;

lack of a niche for storing things.

Having studied the designs of sofas, the photos of which are presented in this article, you can determine which of the folding mechanisms has become the best in its class:

"Eurobook" - has the most durable mechanism;

"tango" - the most comfortable for sitting;

"Dolphin" - the most spacious;

"Pantograph", "accordion" and roll-out - it is most convenient to sleep on them;

"tango", "eurobook" and roll-out - equipped with special niches for storing things;

roll-out and "elf" - are considered the most compact;

"Book" - has the most affordable cost.

In order to purchase sofas that are right for you, we invite you to visit our online store Formula Furniture.

What is the Furniture Formula? Reliability. Quality. The beauty. Versatility. Low prices. Warranty. Fast shipping. Lifting and assembly. Their amount is equal to a successful purchase.

This is the formula for making furniture accessible to everyone. With "Furniture Formula" you can furnish an apartment at an affordable price, but without loss of quality, quickly and with good service.

Our goal is to enable people to buy good furniture at the lowest prices, so that in any situation everyone can afford to buy a new sofa, hallway, kitchen and everything he wants, everything he needs to create comfort in his apartment. To do this, you do not need to collect money first, you can just buy now, and if necessary, arrange an installment plan without overpayments. And we get it.

We have created a large, durable "happy patchwork balloon" for our customers. On this "ball" we bring this opportunity to new places, to new cities, to new areas, so that all people can take advantage of our offer.

Now we have already opened 28 stores in 15 cities of the Perm Territory, and there will be even more of them, because people like our furniture and the way we sell it.

Manufacturers of upholstered furniture use a variety of layout mechanisms for sofas. There are no universal options. Depending on the method of operation, the size of the room and some other conditions, one or the other is chosen.

In order not to make a mistake, you need to listen to the advice of experts. They will help you understand what factors you need to pay attention to in the first place. All groups of mechanisms are classified according to certain criteria. This makes it much easier to figure out which model is best suited.

studying, which mechanism for transforming sofas is better a number of recommendations should be taken into account. There is a generally accepted rule. All sofas are conditionally divided into guest types and designed for daily sleep. If the mechanism is chosen correctly, the furniture will last a long time. Its operation will be comfortable.

If the sofa will be laid out often (sleeping variety), you should not purchase products with a complex layout procedure. In this case, it would be useful to remember the golden rule: the simpler the better. Guest sofas, on the contrary, are not designed for the daily movements of the system. Therefore, their mechanism will not be as strong as that of sleeping varieties.

Attention should also be paid to such criteria as the maximum load of the bed, the orthopedic qualities of the model, its appearance, the layout procedure, the comfort of the bed, and also the convenience in the sitting position. So sofa transformation mechanism is an important factor influencing the choice.

Guest models

Guest type sofas have a design that does not take up much space. The appearance of such furniture is very unusual, interesting. Such mechanisms include "French folding bed", "Sedaflex", "Dionysus", etc. The main purpose of such furniture is to surprise guests, ensuring their maximum comfort during their stay in the hosts' house.

Comfort in a sitting position is important, but you won’t be able to kill two birds with one stone, you will have to sacrifice comfort when laying out. Mechanisms for transforming corner sofas require a significant investment of time and effort in order to transform furniture into a place to sleep. First you need to remove the seat cushions. After that, the mechanism is activated.

If you believe the reviews, rest in such a bed leaves much to be desired. These types of sofas are usually cheap. You can sleep on them, but not all the time.

Sleeping sofa

The second group includes furniture designed for daily sleep. When laying out, you do not need to spend a lot of time. Sleep will be comfortable. Devices of this type include the "book" and its main variations. The most famous of them are "click-clack" and "Eurobook".

This type includes angular varieties. The most popular in this group is recognized the transformation mechanism of the sofa "dolphin", well, or"puma". Also bright representatives of furniture for daily sleep are sofas "telescope" and "ribalto".

Such mechanisms are very easy to operate. Their transformation is quick and easy. The sleeping place has sufficient rigidity. It is flat and comfortable. Such mechanisms are designed for a large number of transformation cycles.

"Book" or "click-clack"

One of the simplest is sofa book. Transformation mechanism involves raising the seat. At this point, a click occurs. The sofa comes back down already unfolded.

Click-clack models are a slightly improved version of the book. Such devices have an intermediate position. At the same time, a person can be in a “relaxation” position. The back does not go all the way down. Therefore, a person is located on the sofa half-sitting.

The advantage of the presented models is reliability and durability even with daily transformation. This option is ideal for apartments with a small area. Floor covering can be anything.

The disadvantage is the limitation in design, simple appearance. The back and seat of such models must be identical in length. A variety of "click-clack" should not be placed close to the wall.

"Eurobook"

One of the most common models today is the Eurobook. The sofa transformation mechanism is considered one of the most reliable. When folding, the seat is pushed forward. Under it opens a space for storing bed linen. The back rests on the vacated space.

The advantage of such a system is the minimum number of mechanical elements. Therefore, there is practically nothing to break in such furniture. According to consumers, these are durable reliable products. The sleeping area is very spacious. In addition, there is a rather large box below. It is convenient to store bed linen and bedding here. The sofa can be installed near the wall.

As for the disadvantages of such products, people note that the seat slides on the floor. Therefore, special attention is paid to the coating. In general, the "Eurobook" is a solid reliable mechanism that will serve its owners for many years.

"Pantograph"

One of the analogues of the "Eurobook" today is the "pantograph". The sofa transformation mechanism is also quite simple. It is necessary to raise the seat at an inclination of about 45º. Then it is lowered and pulled down and towards itself. The back goes down. This is how the bed is made.

Below is a laundry compartment. Some models of the presented variety can be transformed from a direct to a corner version of upholstered furniture. And it doesn't matter if you want to turn it right or left.

The advantage of this mechanism, judging by the reviews, is that the seat does not roll out on the floor surface. It simply slides out without touching the flooring of the room. The improved design causes an increase in the cost of such sofas.

"Cot"

The "clamshell" type has several popular design options. The principle of transformation here is simple. The bed is located directly under the seat. For the front panel, which is located below, the seat moves forward. There is a French and an American folding bed. Their principle is very similar.

The French one is pulled out in the form of a scroll, which unfolds in 3 stages. This mechanism is compact in size, so it is built into even very sophisticated sofas. However, this model is not used on a daily basis.

The American clamshell is designed for heavy loads. This sofa is practical and durable. However, this feature significantly raises the price of this furniture. To transform the sofa, you need to lift it a little, and then pull it towards you. This type of mechanism does not harm the flooring, but it needs to be lubricated periodically to avoid squeaks.

Withdrawable mechanism

One of the best options for sleep is considered roll-out sofa. Transformation mechanism here is very simple. The berth is obtained by rolling out additional sections from under the base. Due to its simplicity, the presented mechanism is called one of the most reliable.

Another advantage of such products is the absence of requirements for the size of the room. It is installed even in small rooms. Moreover, in the unfolded state, the place to sleep will be long and even.

The disadvantage of such mechanisms is the exactingness of the type of flooring. It should be strong, not sag under the weight of the sofa. In the process of transformation, the base slides on the floor. Nothing should interfere with this movement. It is better if the selected model of the presented type has rubber wheels.

Let's open the secret: there are no "bad" and "good" transformation mechanisms, there is a wrong approach to choosing the right model. To understand what sofas are, to find "your" option will help a review with short illustrative videos.

When choosing the type of transformation, pay attention to how the sofa unfolds, lightness and speed, contact with the floor and the presence of a linen box. The purpose of the future sofa is also important - daily use or unfolding from time to time?

Book

A mechanism familiar to many since childhood. The transformation from sofa to bed is simple and intuitive. Time-tested folding sofas are equipped with a spacious linen compartment under the seat and have an attractive price due to the simplicity and unpretentiousness of the design.

How to decompose: the seat moves up until it clicks and then goes down. The back takes a horizontal position, forming a flat surface for sleeping and relaxing.

What is good: low price, quick unfolding method, capacious laundry box.

Things to remember: the distance from the back to the wall must be at least 10 cm, for unfolding it is necessary to make an effort.

Eurobook

Reliable and easy to use sofa transformation mechanism. Due to the absence of loops at the junction, the sleeping surface is smooth and comfortable. The bed is located along the sofa, which is ideal for narrow spaces. There is no need to think about how to unfold or fold the "Eurobook" and there is no need to move it away from the wall every time - the design of the model moves forward.

How to decompose: Roll out the seat and lower the backrest - the place to rest is ready.

What is good: reliability and, there is no need to move the sofa every time it is unfolded, suitable for narrow rooms.

Things to remember: models without wheels may scratch the floor.

Pantograph

This variety has all the advantages of the Eurobook, and even more. Rising sofas are not equipped with rollers and move apart without touching the floor. The lifting mechanism pushes the seat up and it seems to step forward, leaving the flooring intact. The reverse folding mechanism is also effortless.

How to decompose: pull the seat up and towards you and lower the backrest.

What is good: does not interact with the floor, equipped with a linen compartment, no need to move when unfolding.

Things to remember: unfolding requires more effort than in the "Eurobook".

eurosofa

Folding systems on a metal frame are reliable and durable. Perfect for active daily use, they will easily endure rearrangements and moving.

How to decompose: press from top to bottom on the edge of the back - gently lowering, it will take a horizontal position. To reverse the transformation, pull the backrest frame up.

What is good: has a metal frame at the base, does not require moving the sofa away from the wall.

Things to remember:the only disadvantage of such systems is the relatively high cost.

Dolphin

Sofa, which includes a mechanism"dolphin" , unfolds with particular ease and speed. The device was named after the animal of the same name due to the similarity of movements.

As a rule, it is found in corner sofas. The bed frame is held by special brackets at the level of the main part of the sofa. Due to its compactness, this model will successfully fit into the interior of a small room, and a spacious laundry box under the corner part will help to hide home textiles and household items.

How to decompose: slide the frame out from under the seat and pull it up.

puma

Like a cat, laid out as quietly and accurately as possible. No scratches from the legs or dented tracks from the wheels - even the most demanding flooring will not suffer during daily unfolding. When transforming, minimal effort is needed: pull the seat up a little, and then the mechanism will do all the work.

How to decompose: pull the bed towards you by the seat, and the part below will appear behind it.

What is good:noiselessness and respect for the floor covering, it is easy to unfold.

Things to remember: straight models do not have a laundry box. For corner models, it is located behind the ottoman.

Accordion

It got its name due to the similarity of unfolding with the movement of the bellows of a musical instrument. The bed is flat and wide, without tangible joints. The model belongs to the category of sliding sofas and noticeably eats up space in length, choose it if the space allows such room for manipulation.

How to decompose: pull the loop and the seat will move forward, and the back will turn around and split into two parts.

What is good: ease of unfolding.

Things to remember: requires a lot of space for unfolding, so do not place a table or other furniture in front of the seat. The mechanism needs to be looked after and regularly lubricated.

Caravan

The mechanism of unfolding on a metal frame, reliable and durable. Due to the forward transformation, it organizes a wide berth (similar to a double bed) with a relatively small size of the “caravan” sofa.

How to decompose: pull the seat up - it will begin to describe an arc in the air. At the same time, two additional platforms will appear from under the base one after the other. When the seat is lowered onto the supports, the three functional parts form a flat sleeping surface.

What is good: design reliability and ease of transformation.

Things to remember: since the place under the “caravan” seat is occupied by additional platforms, sofas of this type do not have a linen box.

French cot

French cot or"sedaflex" - light and compact European guest solution. Due to the design features, the model unfolds much longer than the “cougar” or “eurobook”, it does not have a linen box, and also such a sofa is not suitable for daily unfolding. If you need an option for frequent use, look for a French clamshell model with a wooden frame in the support base instead of fabric - this option is more beneficial for the spine.

How to decompose:lift the top seat cushion and pull the legs forward - the sleeper, folded like an accordion, is hidden under the seat.

What is good: lightness and structural strength.

Things to remember: there is no drawer for linen, the bed is too soft (not recommended for daily sleep), sofas with a forward-folding mechanism do not always fit well into narrow spaces.

Rich

Mechanism "Rich" or"Spartacus" - American bifold bed. In its design - a metal frame and a welded lattice, reliable and durable. The system is suitable for both guest and daily use. The main feature of the mechanism is the ability to “remove” the seat under the bed, which automatically facilitates the task of transformation.

How to decompose:lift the seat and pull the system towards you - the folded double bed will appear from under the base.

What is good: easy to fold, reliable and durable.

Things to remember: The design does not include linens.

The sofa has become an integral and absolutely necessary part of our home life. But, if it will be used as a sleeping place, its choice becomes an even more serious task. Choosing the right sofa bed for any of the rooms of an apartment or house is very important. After all, you have to deal with him every evening and morning.

In this article we will talk about choosing a sofa folding mechanism and which layout mechanism to prefer. We will tell and show how sofas are laid out.

How to evaluate the mechanism for turning a sofa into a bed

There are four criteria for this:

1. how the bed is located relative to the back - perpendicular or parallel;
2. whether the mechanism is so reliable that it can withstand daily use, or is it only suitable as a guest sofa;
3. how convenient is it to lay out the sofa;
4. is it possible to quickly fix the mechanism if it breaks.

It should be noted that with the location of the bed parallel to the backrest, it will always be narrower than that of a sofa that unfolds forward (perpendicularly). Indeed, with an increase in the width of his bed, the depth of the seat and the height of the back of the sofa increase accordingly, and it becomes uncomfortable to sit on a folded sofa. While the width of the perpendicular berth is equal to the width of the sofa.

Eurobook

Eurobook is one of the most popular sofa folding mechanisms.

When unfolded, the bed is located parallel to the back.
To expand the sofa, the eurobook seat stretches forward.
The back rests flat and rests on the seat.

Characteristics:

• the bed is stable and comfortable;
• the eurobook sofa usually has a box for linen;
• The Eurobook sofa mechanism is reliable, can withstand loads up to 240 kg. But, if it still breaks, then it is not repaired;
• it folds out easily and quickly, but this requires the sofa to stand a short distance from the wall or it will have to be moved back and forward again daily (will this cover your floor?).

Accordion

Accordion sofas are valued for their high compactness, reliability and comfortable sleeping place.

To unfold the accordion sofa, its seat must be pulled out by a special strap, and the back folded in half unfolds like an accordion.
To fold the accordion sofa, the front part must be raised until the mechanism is activated, and then lowered by pressing on the edge to fold the back, and slide in.

Characteristics:

• high and wide berth with a box for linen;
• the sofa mechanism "accordion" is easy to use and reliable;
• sofa "accordion" is inconvenient for laying out on carpets with a long pile;
• breakdowns are easily eliminated, but the mechanism requires periodic lubrication;
• at loads over 180 kg daily transformation is not recommended.

Dolphin

A popular and widely used sofa folding mechanism, especially in corner models.

The deployment is parallel.
The lower section of the "dolphin" sofa is pulled out and put forward for a special loop.
The section rises up and becomes part of the bed.

Characteristics:

• sleep comfortably;
• corner models are equipped with linen drawers;
• daily transformation is possible, but on carpets with long pile it is difficult;
• the mechanism of the sofa "dolphin" is reliable, easy to manage, quickly changes in case of breakage;
• withstands a load of up to two hundred kilograms, but the stationary and retractable parts after some time can sag to varying degrees.

click-clack

Click-clack sofas are the most comfortable for relaxing due to the presence of a relax position of the back or armrests.

The deployment is parallel.
When unfolding, the sofa is tilted onto the back and moved forward. The seat is lowered horizontally.
The back of the "click-clack" sofa can be fixed in the third position (except for lying and sitting) - half-sitting.
There are also single models of click-clack sofas, in which only the sides fall.

Characteristics:

• a narrow place to sleep without a back;
• in the unfolded state, most often there is no support for the pillow and head, since the sidewalls in most models are also lowered;
• there is a linen box;
• to expand the sofa, you need to move it away from the wall;
• click-clack sofas are inexpensive;
• the click-clack mechanism is reliable for daily transformation, it is easy to replace if necessary;
• if there are no retractable legs and the sofa is laid out, then it is not recommended to sit on the edge.

Cot

Sofas with a folding mechanism - a choice for a living room with a bed "just in case".

The spread is perpendicular.
There are several types of such mechanisms with slight differences. The most common French and American models.
The clamshell sections unfold sequentially. Each of them is mounted on metal legs.
The strongest are American folding beds. But in any case, they are not suitable for daily transformation. This is a guest sofa.

Characteristics:

• compact when folded;
• have a box for linen;
• the sleeping surface is not very flat;
• daily transformation is contraindicated, frequent use leads to loosening and sagging;
• the folding mechanism of the sofa is simple and easy to repair.