Do-it-yourself computer chair repair. Repair of computer chairs at home

AT modern office used various furniture, but in the forefront, of course, are special chairs that provide maximum comfort when working on a computer. The device of an office chair implies the presence of the following main features:

• The height of the chair is adjustable, which allows people of different heights to use this furniture.
• Adjusting the inclination of the backrest of the chair - in any posture, you can ensure the presence of a reliable support for the back.
• Free rotation of the chair around the vertical axis. This feature is useful for any kind of office work.

Unfortunately, such chairs sometimes break, which is due to some extent to the complexity of the internal structure. You can, of course, call a furniture repairman to the office, but in some cases it is quite possible to carry out this repair yourself.

The main components and parts of an office chair

In order to better imagine the design of a computer chair, you can take a look at this diagram:

The purpose of such details as the base, rollers, seat, armrests and backrest is quite obvious. Handle D is designed to change the inclination of the chair back. Curly screw A allows you to adjust the height of the backrest and fix it.

Of greatest interest is the gas lift. It is this detail, in combination with the fixing screw shaped B, that makes it possible to arbitrarily change the overall height of the chair. The name "gaslift" gives a very definite idea of ​​\u200b\u200bthe principle of operation of this node. The internal structure of the gas lift can be seen in the following illustration:

The gas pressure in the cylinder is chosen so that an empty chair with the shaped screw B unscrewed will be pushed up, but if a person of average build and weight sits in the chair, the seat will go down. This allows you to easily adjust the seat height.

The main causes of breakdowns

An office chair may fail, or lose some of its functionality due to different reasons. Some of the most common ones can be listed in a short list:

• Systematic excess permissible load to the design of the chair.
• Abrupt, "catastrophic" and significant excess of the permissible load.
• Negligences committed during the assembly of the chair.
• External influence.

Most often, the chair comes into disrepair for the first of the reasons. This is partly due to the fact that the design of office chairs has never been characterized by significant strength and rigidity. Such fragility and led to frequent breakdowns.

About what not to do

Despite not an abundance of details, the arrangement of an office chair cannot be called somehow incomprehensible. But, despite this fundamental simplicity, it is better not to even start some repair operations.

For example, in the event that the gas lift could not withstand the weight of the seated person and “released gas”, then most likely it will not be possible to repair it. This chair is best taken to service center- they know exactly how to fix a computer chair. In addition, there is also special equipment for carrying out repair work with gas lift.

It is also not advised to do any repair of the base, armrests, rollers and other small parts of the chair - they should not be repaired, but immediately changed. The broken integrity of the structure of each of these parts could not be restored anyway. Actually, the repair of the chair comes down as a whole to the replacement of failed nodes. I must say, the gas lift is such a “complicated” detail that changing it is as easy as armrests, it will not work. The operation of dismantling the gas lift and disconnecting its so-called piastra (connection element with the seat) will require a lot of patience and accuracy in actions. By the way, often due to excess weight, it is the piastra that most often breaks, and not the gas lift.

Instruments

Given the peculiarities of repairing an office chair, we can say that the only tool for repair work will most likely be an ordinary screwdriver. However, if you still want to separate the gas lift from the piastra and replace it, you will have to get special hammers with a rubber “strike part”

Some situations force you to disassemble office furniture and then the question arises: how to disassemble office chair? All manufacturers put assembly instructions in the box, but without sufficient experience, disassembly can cause some discomfort.

Now there are enough videos and photos on the Internet on how to properly disassemble an office chair with your own hands. This procedure helps to get rid of wasting money on a new chair, when repairing one of the parts, and also saves space when moving. Also, the need for disassembly arises during repairs, when extra furniture not only gets dirty, but also takes up a lot of free space.

If the computer chair did not understand long time, then the parts can tightly connect to each other. To do this, you can lubricate them a little with oil or use electronic devices for promotion.

Dismantling office furniture alone is not very convenient, and therefore the help of the insurer is required. Small parts of the office chair can get stuck and may require additional tools. When using these tools, safety precautions must be observed, inaccuracy can lead to injury.

Work order

Get everything ready to start necessary tools such as rubberized hammer, chisel, screwdriver pliers. Dismantling an office chair will not take you more than fifteen minutes, if you follow the instructions clearly. Office furniture, especially chairs, take up a lot of space, which is why it is easier to disassemble them than to pack them assembled. Moreover, the transportation of solid furniture can damage its original appearance.

After the disassembly process has already been completed, it is imperative to assemble all the parts, because even if one bolt is lost, the product will not last long after assembly.

If a office chair become unnecessarily, experts advise to collect it and pack it. So if necessary, it will look much better and last longer.

Repairing an office chair is often costly and sometimes impossible. Is it possible to do something with your own hands?

Before throwing away a good office chair because the gas lift or wheels aren't working, try fixing it. All you need is a few simple tools and easily accessible parts.

Gas lift malfunction

The most common cause of office chair breakage is damage to the lifting mechanism.

If a lifting mechanism in the chair needs repair, but all other parts are in order, do not rush to throw it away. Fix it! You can replace the gas lift yourself. Unfortunately, even without breakdowns, this part wears out sooner or later.

The process of replacing this mechanism can be called two-part:

• Disassembly of the lifting mechanism. Measurements for buying or ordering a new part.
• Installing a new part. Assembly.

And that's it. It will take about 45 minutes, excluding finding the part.

You will need an assistant and some tools:

• gripping pliers (nose-nose pliers);
• pipe wrench;
• Phillips screwdriver;
• hammer (optimal if you use a wooden or rubber one).

Repair progress:

• turn the chair upside down and put it on the table;
• remove the mechanism from the seat with a screwdriver;
• the gas lift can be removed by applying a few moderate blows with a hammer. You need to beat from the side of the cross (five-arm), but so as not to damage it. To do this, it will be more convenient to use two hammers. Place one hammer on the gas lift, and strike with the second from above;
• install a new lifting mechanism;
• assemble a chair;
• adjust the seat lowering lever.

wheels

Loose or completely fallen off rollers can also be easily repaired on your own. What is necessary:

• a hammer;
• screwdriver.

A screwdriver, by the way, can be replaced with any other durable object that will comfortable to put on something.

• flip the chair
• disconnect the seat base from the gas lift;
• remove the cross;
• remove the plastic covers from the cross using a screwdriver.

From the end of the metal cross there are plastic plugs on which the wheels are attached.

In the center of the cross, you will see a ring with five tabs that secures the casings. Using a screwdriver, pry up the edge of each casing and remove the plastic plugs. Worn plugs must be replaced. Next, install the covers and wheels.
Sometimes the roller spring ring is faulty. These videos also need updating.

cross

Breakage of this part of the chair occurs almost always due to careless use. The cross is destroyed if the user abruptly sank into the seat, “fell” into it. Of course, it all depends on the material. Steel crosses are much stronger than plastic ones, but their malfunction is also possible.

Almost any breakdown of this element cannot be repaired and requires replacement.

• Carefully remove the cross. Use tools to do this and don't act too harshly as you could damage the gas lift.
• Remove wheels.
• In the center of the cross there is a notched ring that secures the plastic casing. Use a screwdriver to pry off the ring and slide the edge of the casing. Take it off.
• Take out the plugs.
• Replace and reassemble.

If only one beam is broken, the five-arm should still be replaced completely. Since in this case the remaining rays take on the entire load and can also quickly break. It is recommended to replace a broken plastic cross with a stronger metal one, if possible.

piastra

Piastra is a detail that is responsible for regulating the height. If your chair has become wobbly and creaky, then this is a breakdown of the piastres. What could have happened?

• It is possible that the fixing screws are loose. Spin them up. If it doesn’t help, unscrew it completely, apply glue (both PVA and Moment are suitable) on the thread and screw it in. Let the glue dry before you sit back on the chair.
• The plug-in seam between the plate and the sleeve, which is put on the gas lift, burst. You can solder the seam. It is important to first remove the gas lift.

Back

This is probably the most annoying failure. If the back of the chair does not lock, then the permanent contact that regulates the connection between the back and the seat is faulty.

The permanent is a non-separable part, so the part should be removed (it's easy, you just need to unscrew the four bolts) and replaced.

Even this cosmetic defect, like worn upholstery, can be fixed by buying fabric from the store and using a furniture stapler.

These are just the most basic breakdowns of office chairs. Yes, do-it-yourself repairs still have to pay for new parts. But such repairs will cost several times cheaper than buying a new chair. Not all elements can be repaired, and in many cases you can not do without the help of a specialist.

You will need

• - Serviceable gas lift;
• - crosshead screwdriver;
• - rubber or metal hammer;
• - vice;
• - ring punch.

Instruction

To replace gas lift, first of all, remove the piastra and seat from it. To do this, turn the cross upside down and, using a Phillips screwdriver, unscrew the four screws that attach the seat to the piastra. Then lightly tapping, preferably with a rubber mallet, on the piastre, knock it off gas lift a. If these manipulations did not help, then in order to remove the piastra, you need to turn gas lift using a vise against the piastres.

After you have removed gas lift and the seat and piastra, you need to disconnect the cross from gas lift a. Please note that on the underside gas lift but there are fastening elements, which in no case can not be beaten. In order to take off gas lift without damage, use a special tool - an annular drift. gas lift and have cone connection. knock out gas lift alone is unlikely to succeed without a certain skill, so invite someone to help. Put gas lift between tables. One person will hold it, and the second will knock it out with a heavy hammer.

Related videos

Helpful advice

common cause gas lift failure is that you sit incorrectly on the chair, that is, you do not distribute the weight over the entire area of ​​\u200b\u200bthe seat, but make the main load on its front edge.

Manufacturers of office furniture prohibit the use of gas lift at temperatures below +5 degrees. With more low temperatures the liquid in it freezes, and under load it will immediately break. If you buy a chair in the cold season, then you can start assembling it only 24 hours after its components stand in a warm room.

Sources:

• gas lift for chair

If the chair is so high that it is uncomfortable to sit on it, it is advisable to shorten its legs. And some types of chairs and armchairs are designed in such a way that their height can be changed.

You will need

• - ruler;
• - thin indelible felt-tip pen;
• - saw or hacksaw;
• - file;
• - glue;
• - sandpaper;
• - nails and hammer;
• - chisel;
• - porous rubber.

Instruction

If you need to lower a chair that does not have height adjusters, first make sure it is out of warranty. Then see if its design provides for shortening the legs. So, some chairs, for example, school ones, instead of three or four straight legs, are equipped with two L-shaped ones. It is impossible to change them. The same applies to products that have a single leg with a stand: by separating these parts from each other and shortening the leg, it is difficult to connect them again.

If the chair has three or four straight legs, first find out to what height each of the legs should be shortened. Then, using a ruler and a thin indelible felt-tip pen, measure this distance on each of the legs, starting from the end. Do not take into account the thickness of the rubber or other soft lining. Guided by these marks, shorten the metal legs with a hacksaw, and the wooden ones with a saw. The cuts must be strictly perpendicular.

A story in pictures "How I repaired my computer chair."

My office chair on wheels started tilting down from time to time. The last time it did it so suddenly that I cheered up and decided to do it. The work turned out to be about 20 minutes, while half the time was spent searching for a tool.

The gas lift (pneumocartridge) turned out to be the faulty unit. In principle, gas lifts can be found on sale, those that are more authentic - for ordinary cheap chairs, which are shorter - for more solid ones, including rocking chairs. A trip to the store was not included in my plans, so I used improvised means.

What is needed for repair:

• wide flat screwdriver (preferably two)
• mallet, or heavy piece of wood
• roulette
• a tube
• rag

I want to say that it is more correct to knock out an air chuck through a hole in a crosspiece with wheels. But first, not everyone has right tool. Secondly, I did not succeed in disassembling the chair in this way. That's why I figured it out in a simpler way.

Subsequence:
1) We set the height of the chair that is comfortable for ourselves, and without getting off it, measure the height with a tape measure, for example, along the armrest. Then lower the chair minimum height. We measure the height again. Subtract the second number from the first number and remember the result. We'll need it later.
2) Using screwdrivers, remove the wheels from the cross.
3) We knock down the cross with a mallet from the chair. You need to hit as close to the middle as possible, alternately from different sides of the air chuck, this will reduce the likelihood that the plastic will crack.
4) Remove the steel latch washer. It is quite fragile, so you need to be careful.
5) Remove the glass, and then everything else from the axis - gum, washers and bearing.
6) We make a tube desired length. Its inner diameter must be no less than the diameter of the axis from which the washers with the glass were removed. The outer diameter can be anything, as long as it fits in the glass. We calculated and memorized the length of the tube at the first stage. You can make the length longer by 1 centimeter, because. the rubber removed from the axle usually cracks over time, and it can be thrown away. To make a new part, I used a piece of metal-plastic water pipe with inside diameter about a centimeter. I cut it in a circle with a knife, and then broke off the desired part.
7) We put the resulting tube on the axis, and then the rubber band (if it is still alive) and washers with a bearing.
8) We put on and fix the glass with a washer. Then, with a couple of blows of the mallet, we put the crosspiece in place, and complete the assembly by installing the wheels.
9) We wipe our hands ...

Perhaps the second point will raise doubts about the appropriateness, but in the process of knocking the cross off the gas lift, one of the wheel mounts immediately broke in half, so I preferred to remove the rest of the wheels. The tube carries a relatively small load, so not only metal, but also more or less durable plastic is suitable. Also, instead of a tube, you can try to impose an axis in a circle wooden slats and tie them with wire.
Broken wheel holder I glued super glue and dried 6 hours on the battery. 2 weeks of intensive use of the chair have passed - the flight is normal!