Office chairs: types, characteristics, device manufacturers

Chair occupy an important place among the necessary office furniture, because it depends on their ergonomics employee productivity.

Types of office chairs

• Executive seating. This type of chair is different from the rest of the solid appearance and large size. For upholstery natural leather is chosen more often.
• Chairs for staff. For them is the two main criteria: user-friendliness and reliability. Appearance is also important, but the focus is primarily drawn to the gas lift mechanism, the backrest and seat shape.

The category includes operator model with armrests and a computer chair.

• Chairs. The main criterion for the production - it's easy, because the organization of guests should feel comfortable while waiting for admission.
• Child seats. They provide a large number of mechanisms that allow you to adjust the slope of the backrest, seat and height. The materials used in production, are completely safe.

The design has no sharp corners and crevices, where casually fingers could get the child.

Apparatus office chairs

To ensure comfortable work for table office chairs have the ability to:

1. elevation changes, which allows you to adjust the desired height of the seat under the growth of any person.
2. Changes backrest. This suggests that the back is always in contact with her, even if the position of the person in the chair changes.
3. Rotation around its axis.

For clarity, it is necessary to consider the principle of the gas lift - a device that is responsible for the height adjustment:

• The metal body is a cylinder in which a piston and rod fit. In this cylinder vessel 2 is installed, and between them - closing valve. When the piston is at the top of the low seating position.
• To chair risen, it is necessary to lower the piston. When a person clicks on the adjustment lever touches the button responsible for opening and closing the valve. The valve, in turn, moves the gas from the first vessel into the second.

Gas pushes the piston, causing it to fall, and at this time the chair is raised.

• If you release the button, the valve closes. This means that the movement of the gas becomes impossible, and the seat is fixed in position.
• To lower the seat, push the lever that opens the valve again. Under the influence of body weight cylinder descends, the piston rises and pushes the gas into the external reservoir. The chair at this point is omitted.

Characteristics of office chairs

All specifications are divided into 2 groups:

• Provides passive comfort. These include the shape and size of seats and armrests, castors on the base structure, anatomical thickening of the seat and backrest.
• Ensuring active comfort. In this case it is very important to have mechanisms to adjust the chair for himself can change the angle of deviation of the backrest, seat depth and the height adjustment.

Mechanisms for office chairs

Permanent-contact

Chair with permanent contact, suitable for people whose time is devoted to work on the computer. Features:

1. Easy chair leans back - it prevents the long spine enslavement.
2. Regulated height.
3. Seat depth is adjustable.
4. There adjustable stiffness.
5. No function of fixing the position - back is constantly in motion.

piastre

Special unit that connects the base of the seat with the gas lift rod. Secure with four bolts. On it there are openings that allow to connect the back. In this case various options may be used docking:

1. Spring-screw mechanism, which constantly supports the back in position.
2. Ovalina which enables changing the depth of the backrest and its height.
3. A permanent-contact backrest adjusting its height and inclination.

Freestyle

Freestyle (freestyle) adjusts the stiffness of the back. Its setup depends on the physiological characteristics of the person and of his or her personal preferences.

rocking

Swing (tilt) - rocking mechanism latching operating position. Divided into 2 types depending on the swing axis location of:

• Tsentralnoosevoy when the swing axis is located right in the center.
• Off-center when the shaft is in the front part.

tilt mechanism is commonly used in the chairs of low and medium price range. People with weight greater than 100 kg is recommended not to use it because of the welded sleeve, which can break under high load.

multiblock

Multiblock allows you to adjust seat height, use the opportunity to swing back and fix. During the height meets the lever under the seat on the right. The lever that adjusts the swing and position fixing, usually installed on the left.

the amplitude of oscillation is governed by a special screw, which is located in the center.

Anyfix

One of the levers adjusts the height of the seat, and the second includes swing. Armchair with such a mechanism is capable of fixing the positions by the metal plates are compressed at some point.

Anyfix commonly used in chairs with low and medium price range.

synchro

The essence of this arrangement is that when tilting the seat back angle is changed. As comfortable as possible the proportion of - 3 to 1: if you decline back to 3 degrees, the seat deviates by 1 degree.

Synchro prevents overturning chairs, allows you to freely change the position of sitting, back supports, and also allows the swing function.

an asynchronous mechanism

slider

He is responsible for the adjustment of the seat depth, depending on the desire of the user. Typically, manufacturers use 5 basic positions, one of which the user can select.

The design of the base

crossing

Crossings (pyatiluche) is the support for the user.

The spider structure incorporated rollers, which are divided into groups depending on the hardness:

• Harder rollers formed from nylon and polypropylene are suitable for floors covered with tiles or stone.
• Videos from polyurethane, characterized by its softness, become an excellent substitute for solid at the parquet or laminate flooring.

Types armrests in an office chair

There are three ways of mounting the armrests:

1. To the seat. In this case, the armrests can be removed, if necessary, the seat structure is not disturbed.
2. To the back and seat. In this case, they are a kind of connector seats for the two parts.
3. Armrests are attached to the two parts of the chair back and seat but separate from them are connected to each other via the metal plate. In this case they can be removed without disturbing the integrity of the carcass.

Material

Upholstery seat office chairs use a variety of materials.

the cloth

• Series C - pure synthetics, in properties and appearance similar to burlap. Usually it is used for the upholstery of chairs for visitors and cheap operator seating.
• ZT Series - one hundred percent polyolefin. It is used for low-cost carrier seats, chairs for visitors, but is sometimes used to guide seats.
• Microfiber. It is soft to the touch, the fibers do not adhere to clothing and do not form pellets. Take care of it easily, because it is resistant to dirt. This fabric is suitable for upholstery operator chairs the medium price segment, chairs and armchairs for executives.
• JP Series. It is resistant to fading and dirt, but, unlike microfiber, resistant and wear. Chairs and visitor chairs, armchairs for chief and operator chairs are upholstered with this fabric.

Leather

The basis for the classification of the skin is its quality and methods of processing:

• Category A. The surface is completely processed in the production process. It is rough and thick, but at the same time sturdy. Over harvesting is carried out long work: shpaklyuyut uneven, stained and polished several times.

After these procedures, the polymer is applied to the skin, which is designed to protect it against moisture and dust. Second name for this material - Split. Split-skin used in the manufacture of seats for visitors, managers and business-class furniture.

• Skin category B partially corrected. It refers to the skin luxury. Animal skins are chosen with the fewest flaws, so they are better.

In this case, on the skin do not work for a long time: it is slightly adjusted putty and painted. In this regard, it has good air permeability and water absorption.

• Skin category C almost no processed. For its production are selected very high quality skins with a minimum of defects. The top layer does not change, it is only natural natural dyes are applied substantially without color.

The skin of this category is the highest level of hygroscopicity. It is well-breathable, and abrupt temperature changes and ultraviolet rays do not affect its quality.

Due to its originality and exclusivity, it is used only in the manufacture of chairs and furniture for executives premium luxury.

imitation leather

Divided into 2 types:

• Vinyl, practical and inexpensive. The basis of this material - a fabric coated with PVC. Its handling is no big deal, caring for it too easy, in addition, there is a wide variety of textures and colors.

• Fake leather - modern material, which consists of a PU-coated fabric. "Furniture fabric" resistant to low temperatures and wear, sufficiently elastic. Take care of it just as easy to handle as well as in the production process.

Another advantage is that the producers are trying to diversify range of textures and colors. Significant negative - it is inferior to natural leather in the removal of moisture, ie, hygroscopic.

Eco-leather upholstered chairs and visitor chairs, office furniture, as well as heads of the chair.

Plastic

Products made of this material are the least expensive, which is why they are not intended for managers and even employees, because to sit on them for a long time impossible.

Very often, the plastic chairs and tables are placed for visitors waiting for their turn to receive.

back material

The back is upholstered with the same material as the seat, that is:

• different kinds of tissue;
• genuine leather;
• artificial leather.

They added 2 mesh varieties:

• Fabric-mesh TW series. The average thickness thereof is 0.5 cm. Such fabric upholstered backrest of computer and operator chairs, chairs for visitors and armchairs leaders in business class.
• Acrylic grid. Breathability prevents the accumulation of moisture, and properties such as wear resistance, repulsion dirt, dust, water and sunlight explain its great popularity.

The back of the grid used for acrylic chairs for visitors, managers and operators of business class.

base Material

The most common bases used for office chairs crosspiece. It is similar in color and material with armrests, it consists of 5 beams. Its diameter can vary, but it is smaller than, the lower the stability of the whole chair.

In manufacture the following materials:

• Plastic. Inexpensive material can withstand a load up to 250 kg.
• Metal. Respectable and reliable, but quite heavy.
• Metal frame with wooden plates.

When installed at the base of the chair legs or runners, it is usually used for the manufacture of wood or metal.

How to choose an office chair

First you have to determine for whom the chair is intended. low cost options chairs suitable for clients of the company, in the production of which use inexpensive materials, furniture or mid-price segment.

When buying chairs for staff should pay attention to the presence of armrests, as they provide comfort during operation. Chair should emphasize his status.

The second important step - to choose a material for upholstery of the seat and backrest with the budget, material properties (strength, moisture and dirt repulsion, ecological purity) and personal preferences.

The third - to determine the design of foundation:

1. The legs are usually used in furniture for the visitors.
2. Runners are found in the chairs for visitors and superiors.
3. Pyatiluche with wheels suitable for staff and management.

Fourth - to pay attention to whether there is in the area of ​​the lumbar cushion, which is designed to keep your posture in the correct position. Its presence is mandatory for employees and office managers.

The fifth step - select the appropriate maximum angle of inclination of the back.

Next, you must choose a comfortable seat, which can be:

1. tough;
2. soft;
3. semi-soft.

After you should pay attention to the appearance, choose the color to match the style of the whole company and the surrounding interior.

And the last thing to do - to ask about the warranty. The warranty on the chair should be at least two years.

what better

Best office chair meets the following requirements:

• convenient armrests of metal or wood attached to the base of the chair;
• ergonomic rest with various inclination angles and lockable in several positions;
• Soft gasket seat;
• hygroscopic and easy to clean upholstery material (mesh, Bio skin);
• the presence of synchro and lever to change the height.

Exploitation

For each material - a way to care:

• Leather. Easy to clean with a damp cloth. To remove greasy, use a dry sponge. Purchase a special tool for care of leather goods and wipe their seat at least once in six months.
• The cloth. If the chair is stained, it retracts with a damp cloth or a special cleaning solution.

• Wood. Rag water are irrelevant - requires special solutions without abrasive particles.
• Metal and glass. There are 2 options: either wet a clean cloth or a special tool for cleaning metal and glass parts. After that, it is necessary to take a dry cloth and polish to a shine.

Fabric with stiff fibers, sponge metal chips and means for provoking the appearance of corrosion should not be used.

Precautionary measures

To enjoy the use of the chair, follow basic precautions:

• Do not create a large load on the arms.
• Observe maximum weight that can withstand the chair: seat with plastic substrate can withstand up to 120 kg, with a wooden crosspiece - up to 130 kg, and a metal - over 200 kg.
• Avoid impacts on the structure and the ground.
• Used only in a dry room with air temperatures of 17 degrees.
• Avoid contact with acids, alkalis and colorants.
• Periodically inspect for how to attach the nuts, screws and bolts.
• Do not stand on the chair and armrests - it can harm your health.
• Do not allow to seat two or more people.

• Not to leave the chair sharp-edged objects.
• The chair should not be used to move heavy objects.
• Proper use of levers and seat mechanisms.
• Do not create a dynamic load on the arms.
• It is recommended to choose the clips depending on the hardness and roughness of the floor surface.
• All nuts, bolts and other small parts, try to keep in the box, so they do not get lost.
• During the stroke of the seat is not applied explosive material (gasoline, acetone) are not available to this solvent.
• Avoid contact with the chair of ultraviolet rays.
• The humidity level in the room must not exceed 70%.
• After complete assembly of the need to check the strength of the whole structure and its elements.

Malfunctions, repairs, spare parts

The most common failure:

Lever does not work, is responsible for the change in seat height.
Causes:

• damaged or gas lift mechanism swing;
• breakage of tabs located in piastre structure (if this mechanism is installed in a chair);
• breakage multiblock fixing the backrest in a certain position;
• errors that occurred during the production process the chair and fix the armrests or piastres.

Decision: to eliminate the damage, try to relax the multiblock. If this came to nothing lead, it is necessary to rearrange the fixture. If this has no effect, it is necessary to contact the service center.

Not working mechanism of the backrest lock in position.
Decision: connector for the back and seat is permanent. Check the integrity and serviceability.

Big backs play, although all fasteners are well documented.
Such a problem occurs when using the chair for a long time.

Because of the constant load is likely to damage the fastening system.

Decision: repair attachment system or buying a new chair.

Luft seat.
Possible reasons for this could be: failure of the gas lift, tilt or piastre fastening mechanism.
Typically, this occurs due to the constant moving around the office.
Decision: Replacement gas lift.

Detaching rollers.
The reason: a large and long-term load caused the breakage of locking rings, wear or breakage of the stub roll.

Decision: Option one - complete replacement of the wheels.

Manufacturers of office chairs

«Burokrat» began producing furniture in 1997, and today is the largest manufacturer of plastic furniture: the issue being more than a hundred models of chairs.

We have our own factory in the Moscow region, as well as the agreement on the production and release of goods in Southeast Asia.

A wide range of goods that can be completed each year with new models, a laboratory and a multi-level system check product quality by BIFMA standard puts the company on a par with the largest European manufacturers.

«Burokrat» belongs founded in 1992. The company MERLION.

Brand opened the production of furniture in 1999. By 2001, its stores spread throughout Russia, and in 2003 the presentation of the first Russian model line of chairs made from foreign parts.

At present, it increases its output, which is associated with an active import substitution. chairs production exceeds 60 thousand per month. Even today you can see more than 120 models of furniture of this firm.

A distinctive feature of the company is that it sells high-quality and well-equipped with various mechanisms of the chair at a reasonable price. It is difficult to find a seat, the value of which exceeds 25 000 rubles.

First, the company adhere to the basic standards of the furniture manufacturers, but later developed its own original system, with an emphasis on quality rather than on the range.

Brand is part of the company TOP MEDIA, which was founded in 1998. Particular attention is paid to the design of furniture and its safety.

The basic principles of the company are "smart" packaging, which is printed on a bright print, range from Entrylevel to HighLevel, own warehouse and work with each client individually. In 2001, the trademark was included in the list of top-selling brands.