Estrutura principal da cadeira ergonômica
Ergonomic chairs are mainly composed of backrests, armrests, cushions, chassis, air pressure rods, five-star tripods, wheels, and headrests. Not all brands have headrests, especially international brands. Headrests are not standard equipment. It is said that no headrest is needed to allow users to work more focused.
1. Chair back
The main function of the back of the chair is to support the waist and spine. When the human spine is upright, the back of the chair can fully support the body and share the pressure of the body, so that the muscles of the body can be balanced when leaning forward or backward. and spine are relaxed.
2. Armrest
The armrest plays the role of supporting the arm. Generally, when using a computer or typing and reading, if there is no support from the armrest, the arm will hang in the air, and the shoulder will be overloaded at this time. A suitable armrest can help share the pressure on the shoulder and wrist. Almost all armrests on the market are 3D or even 5D, which can be adjusted up and down, forward and backward, translation, rotation, and multi-angle.
3. Cushion
The cushion mainly supports the buttocks, increasing the force-bearing area of the ischial bones. A comfortable cushion can prevent poor blood circulation in the buttocks and legs, and reduce the pressure on the buttocks and leg numbness and swelling.
Now the cushion is mainly designed to be adjustable, for example, it can be adjusted by leaning forward, which is suitable for office use; the sitting depth can be adjusted to suit different figures; the height can be adjusted, and people of different heights can be adapted, and the crowd matching degree is high.
The surface material of the cushion is generally leather or mesh. The leather is cleaner and looks more upscale, while the mesh has better air permeability, wear resistance and support.
4. Headrest
The headrest mainly provides support for the neck and cervical spine and relieves tension in the neck. In particular, many office workers are used to taking lunch breaks in the office. Since the headrest is available, the comfort is better.
Not all brands are equipped with headrests. If you need a headrest, you can pay attention to the selection. Among them, the headrest has a large area and a good angle design, which can fit the neck better and provide better support. It is recommended to choose an adjustable headrest , a stronger sense of experience.
5. Chassis
The chassis must be stable, right? Because this is related to the smoothness of the control and the stability of the chair, only a good enough chassis can achieve stronger functions. The chassis of ergonomic chairs below 1,000 yuan in China are mostly made of nylon or steel. Of course, there are also international ergonomic chairs worth tens of thousands of yuan, which also use this material. Chinese ergonomic chair brands use the material of the chassis. There are many, more than 2,000 ergonomic chairs are almost all made of aluminum alloy, which is stronger and stronger, and the chassis design is also very professional, no worse than international brands.
6. Wheels
There are many types of wheels, including universal wheels, fixed wheels, brake wheels, power wheels, etc., but the main function of wheels is to facilitate movement. The main consideration of the wheel is whether its quality is strong, whether it can withstand a lot of activities, and whether it has strong friction, is not easy to slip, and has a good mute effect.
7. Five-star tripod
The five-star tripod mainly plays the role of supporting the whole chair, so the material is the most important. There are also three kinds of materials: aluminum alloy, steel and nylon. Needless to say, products made of aluminum alloy and steel are stronger. China's mid-to-high-end ergonomic chairs will choose aluminum alloy five-star tripods, which have strong load-bearing capacity and are beautiful.
8. Air pressure rod
The air pressure rod mainly controls the lifting of the chair and determines the safety of the product. In the early years, many seat accidents were caused by the poor quality of air pressure rods, but at that time it was also due to weak market supervision. Many opportunistic businesses used cheap air pressure that did not meet the grade in order to reduce costs and seek greater profits. Rod, mixed with other gases in the gas column of the gas pressure rod, the gas purity of the ammonia gas is not enough (generally above 90%), the internal circulation of the gas pressure rod makes piston movement, resulting in an increase in temperature, and it is difficult to withstand the huge pressure, which will cause an explosion . Nowadays, when we buy ergonomic chairs, we can use them with confidence as long as we choose regular brands on regular platforms. The air pressure rods they use are all grade 4 or 4, and the inner wall is thickened and explosion-proof, which is very safe.
How to judge the pros and cons of the air bar? Here are a few tips for you.
Look at the level: Generally, the air pressure rods that can be used in ergonomic chairs need to use grade 3 or 4 air pressure rods.
Look at the brand: Among the imported pneumatic rods, South Korea's KGS and South Korea's Sanhong are of higher quality; among Chinese brands, Anhui Wright, An Defu, Changzhou Juwei, and Angie Snoll are of better quality.
Look at the certification mark: the international certification mark TUV/SGS/Bifma, just look for these three.
