What are the main parts of an ergonomic computer chair? Now let's take a look.
1. Casters (also called universal wheels):
Mainly divided into ordinary casters and PU wheels (soft materials are suitable for wooden floors). The technical content of casters is not high, and generally there is no problem. It mainly depends on whether the pulleys are silent when rolling and whether there is a large friction with the floor. Due to frequent use of casters, high friction with the floor can easily damage the floor. . The casters are smooth and silent, which gives people a sense of high-end. Another point is the fit with the five claws. The details of ordinary chairs can be made well.
2. Chair legs: five-star tripod (five claws):
Five-star tripod is also often called five-claw, because it looks like five-claws. The five-claw tripod is mainly made of nylon tripod, stainless steel, and aluminum alloy. The quality of the same is nylon < stainless steel < aluminum alloy. Nylon tripod is used for a long time. It is not recommended to buy as it may break. Steel and aluminum alloy products almost never break.
3. Air rod (lifting rod)
The air pressure rod should be the issue that everyone is most concerned about. It is used to adjust the height and rotation of the chair. The air rod is filled with high-pressure gas. If the chair is not good, the chrysanthemum will not be protected. In fact, the safety problem of the chair itself mainly lies in two places, one is the air pressure rod and the other is the chassis. We can see that there are many English letters in the picture, SGS, LANT, BIFM... So what do these letters mean? Yes, these are the certification marks of the air pressure wand.
SGS is an ancient third-party certification agency. It is the largest and oldest technical appraisal company in the world. It is also a very authoritative certification agency in the world. SGS is an internationally recognized organization for professionalism, quality and integrity. In other words, if the air pressure rod has the SGS certification mark, it means it complies with international quality standards. Then the air pressure rod is qualified. As long as it is used normally, there will basically be no problems.
In addition to SGS certification, another common certification is BIFMA certification, which is a non-profit certification organization in the United States. Its full name is Business and Institutional Furniture Manufacturers Association (American Furniture Association), which is used to measure the quality of furniture in the United States. As a standard, furniture from other countries must first pass BIFMA certification if they want to enter the United States. It mainly examines the stability, strength and fatigue of the furniture. Due to the complete content and strict certification requirements of BIFMA certification, it has also been widely recognized internationally. recognized.
So what is the use of so many certifications? In fact, every additional certification on a computer chair is nothing more than a guarantee for the safety of the chair. It can be understood that the more certifications, the better the quality of the product, but the price is also more expensive. Basically, SGS certification is enough, but if you are too heavy, it is recommended to consider the certification level of the air pressure rod and other certification standards.
So why did the chair explode? Either the gas inside the pressure sensor is not the inert gas nitrogen; or the nitrogen is not pure enough or the seal is not tightly sealed, causing air leakage; or the thickness of the wall of the pressure rod is not enough. But if you choose chairs from mainstream brands, this problem will basically not occur, so you must not buy a lift chair with three no products.
4. Chassis:
The part that supports the seat and the chassis are quite expensive among all accessories of the chair. Generally speaking, the air pressure rod must be at least SGS certified, so the chassis must at least be made of steel. Never choose plastic or iron. , the plastic one is easy to break, and the iron one becomes difficult to lift after it rusts. So how do you distinguish between good and bad chassis materials? I will tell you the answer directly here: ordinary plastic < iron < steel < aluminum alloy < carbon fiber, roughly based on this standard. Generally, low-priced computer chairs are made of steel or stainless steel chassis. Of course, it is better to have an explosion-proof tray. Regardless of whether it is really explosion-proof, it is at least a kind of mental protection; then higher-priced ones will have aluminum alloy, carbon fiber and other materials. tray.
5. Chair seat:
Composed of wood board, sponge and fabric. Sponge: regenerated sponge, new sponge.
6. Handrail:
The lifting effect should be the most practical function in armrest adjustment, and the thickness affects the quality. Some armrests can move forward, backward, and up and down. The more dimensions of movement, the stronger its ability to adapt and the better the effective support effect.
7. Seat back connection:
The seat and back of the chair are connected by steel pipes or steel plates.
8. Materials of chair back and seat:
The two places where a chair has the most contact with the human body are its seat cushion and its backrest. The fabric material of the chair is basically reflected in these two parts. The fabric material mainly reflects the breathability, and then the softness and softness of the cushion. Resilience also directly determines whether you are comfortable or not.
So what are the types of fabric materials? The more common ones are: cotton and linen, PU leather and mesh. Basically 95% of computer chairs are inseparable from these three materials. In fact, among these three materials, I don’t recommend buying cotton and linen because of their texture. It is not as good as PU leather, its breathability is not as strong as mesh, and its appearance also gives people a cheap feeling.
So for the seat cushions, I will mainly talk about the difference between sponge and mesh, because computer chairs basically don’t look at plastic, metal, or wooden seat cushions. The native sponge actually gives you a soft and comfortable feeling when you sit on it. , its resilience is actually mainly reflected in its ability to return to its original thickness and shape after you stop sitting on it; the pure mesh chair actually has that kind of elasticity, you can sit on it Shake it, and you will find that the chair cushion is indeed rebounding. In terms of elasticity and breathability, pure mesh is actually slightly better. What needs to be noted here is that pure mesh cushions seem to be unfriendly to friends who are too heavy. If friends who are too heavy sit on mesh chairs, the elasticity and durability of the mesh will be lost over time, resulting in the loss of the original function of the chair. The elasticity is very good, so I recommend that friends who weigh over 180cm directly choose sponge cushions instead of pure mesh cushions.
9. Lumbar pillow:
Some chairs have them, some don't, the necessity depends on the comfort of the chair.
10. Headrest:
Some chairs are available and some are not, depending on your needs.
People who have really sat on ergonomic chairs will find it difficult to adapt to ordinary office chairs, especially people who sit for long periods of time. But I can only tell you that no matter how good the chair is, it cannot save you from being sedentary for a long time. Ergonomic chairs can alleviate the harm of prolonged sitting, but what is more important than chairs is: exercise more, control the time of sitting, and stand up and walk more.
