Definition

The office chair is a chair designed to be comfortable, adjustable, and easy to move with

wheels. This chair is perfect for sitting for long periods of time at a workplace or even at home.

They were made to make things easily accessible within your space without the need of standing

up.

Overview

The office chair has many different designs and is made up of different materials. The

seat can be made of metal, plastic or sometimes completely made of wood, not including the

mechanics. They have many different types of colors, but the most common color is black. These

chairs can also be padded, cushioned, covered with leather, or even have a mesh design. The

material of the office chair isn’t just for looks it has a purpose. The chair also has arm rests

which can be padded as well. Office chairs are built with five legs and each with wheels so that

you can move around the office without the need to get up. The five legs also offer the most

stability. Office chairs also have mechanisms that allow you to spin around and adjust the tilt and

height of the seat. The chairs generally fall under these measurements; Height of chair 16 to 20

inches, Width 19 to 21 inches, depth 15 to 19 inches.

Components

The chair itself consists of a seat, backrest and armrests. As stated, before there were

many designs, but all office chairs are made for comfort and mobility. The seat is attached to the

base where the mechanisms and legs meet. The mechanism has 3 purposes: tilt resistance, height

adjustment and rotation. The seat tilt is controlled by either a knob to increase or decrease

resistance and/or a paddle switch to lock the chair in place. It all depends on the design, for

example, some chairs only have a knob for the tilt resistance. For height adjustment there is a gas

cylinder located between the legs and base. The gas cylinder is called a pneumatic system, and it

is triggered by the paddle which allows you to change the height of the chair. The rotation

system is pretty simple, and it’s called the swivel. And of course, the legs with wheels allow you

to move freely within your office.

Explanation

The most important goal in an office chair is to make it comfortable. Whatever material is

being used to make the chair it is important because it will need to correlate with the chair

design. If there is no padding, the chairs design will need to have curves and dents into the chair

to make it comfortable. Luxurious office chairs tend to have bulkier designs with a wooden

frame and covered with a layer of leather. The seat, backrest and armrests are important to

maximize comfort so make sure that curves, dents, and material all complement each other. The

seat may have a knob and/or paddle for controlling the tilt. The knob allows you to turn

clockwise or counterclockwise in order to increase or decrease the resistance of the tilt. On the

other hand, the paddle locks the seat in place so you cannot tilt at all. The mechanism responsible

for adjusting the height is called the pneumatic system. Inside the cylinder part below the seat is

a chamber that compresses air when pushing the seat down with body weight after pressing the

paddle connected to it. When increasing the height, press the paddle again and the built-up

pressure in the chamber will push the seat up. At the bottom of the seat there are 2 swivel plates

that allow the seats to rotate a full 360 degrees making it easy to turn around and get stuff around

the office. Finally, the five legs and wheels which add stability as well as mobility. Three legs

and wheels are enough for an office chair but for safety purposes five is the recommended

amount.

Visuals Figure 1: Disassembled office chair

Figure 2: Swivel Plate (spin mechanism)

Conclusion

In 1849 the first office chair was invited by Thomas E. Warren. He made this chair

because around the 1849s is when office jobs were created, and many people started taking those

jobs. So, the chairs were invented to be able to sit comfortably for long periods of time as well as

making everything in your space easily accessible without needing to get up. Even though there

are many different types of designs for an office chair they all are made for comfort. The designs

are also made for your safety like the five legs. The office chair has a price range of 50 to 2000

dollars which all depends on the materials of the chair and design. You can have a good office

chair with three or four legs but the lesser amount the higher the risk of falling back. Another