How to choose a desk? According to height?

In fact, in some places, the desk can be determined according to the height, for example, the current desk has a button to adjust the height. It's just that many places have not been used in practice, and I can also adjust the height of the desk in the future to make students sit comfortably, and I hope that my wish will finally come true.

If the material is not good and harmful to the body, it is not desirable, and health is greater than everything. So how can you tell what kind of material is good and harmless?

Most of the table materials on the market are divided into wood-based panels and solid wood. The ** of wood-based panels is moderate, and the ** of solid wood is on the high side.

Occupy most of the market is wood-based panels, no matter what kind of wood-based wood is containing formaldehyde, but the content is a matter of how much, as long as it is within the standard, it is harmless to the body. The wood-based panel structure includes finishes and inner materials, it is best to choose a pure finish, and the common environmentally friendly finishes on the market are meter nano veneer (melamine board), Formica Memine board, etc., which are environmentally friendly veneer materials; And the kind with a lot of patterns on it is painted, and the wood-based panel tables and chairs are relatively cheap, and of course it is impossible to choose expensive environmentally friendly paint. The inner material is usually divided into grades, and materials such as low, medium, high-density fiberboard, and solid wood particle board are commonly used.

E2 solid wood is commonly used in pure solid wood and multi-layer solid wood board, pure solid wood wood itself is formaldehyde-free, mainly depending on the paint it uses, the general use of water-based varnish will be more environmentally friendly, pure solid wood wood is mostly used for fir wood, rubber wood, pine, etc., tables and chairs will be better to choose solid wood splicing board, the stability of the splicing board is better, not easy to deform, after removing the scar on the natural wood is also more beautiful and beautiful, the whole board is easy to deform after a long time. Multi-layer solid wood board is a variety of solid wood superimposed, the surface is usually melamine veneer or cured surface, mainly to see whether the combination of solid wood and solid wood glue is environmentally friendly, multi-layer solid wood is relatively environmentally friendly, and there are some solid wood veneer (MDF inside and outside pasted a layer of solid wood), or only a few boards of solid wood, are relatively inferior, so before buying must ask what kind of solid wood it is.

Then look at the features:

The table should have the function of lifting, the child is growing taller, it is best that the table and chair can be adjusted according to the child's height, and the more detailed the gear, the better, so that it can be more suitable for the child's growth. Now the main ways of lifting are manual screw lifting, hand lifting, air pressure lifting, hand cranking and air pressure lifting is relatively convenient and safe, but it will be more expensive.

The table should have the function of tilting and flattening, the tilt angle of the table is between 12-15 degrees, and the child's eyes can reach the best viewing angle with the book when writing and reading, this angle can greatly extend the time of people's eyes without feeling fatigue, and can improve the efficiency of reading. If you have the conditions, you can also choose the table top with an adjustable tilt angle, so that some children like to draw, you can stand up the table to draw, so that the table can play a greater role.

The table is best equipped with a reading board, which can help the child fix the book.

Desks are selected according to height, and the height and inclination of their desks are adjusted according to height and sitting position.

The height and inclination of the desk can be adjusted according to the height and sitting posture, and the desktop is easy to clean.

According to the national standard for student desks and chairs:

If the height of the student is less than 119 cm, the height of the desk used should be 52 cm, the height of the empty area under the desk should be 40 cm, and the height of the chair should be 29 cm;

Students who are between 143 and 175 cm tall should use a desk height of 67 cm and the height of the empty space under the desk.

It should be fifty-five centimeters and the seat height should be thirty-eight centimeters.

Roughly speaking, the height of the desks of primary school students is about 52 cm; The height of the desks for secondary school students is about 67 cm.

I think a desk should be about 1.2 meters, so the height of a desk should be at least 1 meter, and if a child is 1 meter tall, it's 1.23 meters.

The desks are about 60 cm to 80 cm high. In this way, the student makes a 40 cm chair and stool. Good for the health of the body.

Grade 67 cm.

Grade 70 cm.

Grade 73 cm.

76 cm above junior high school.

Actually measure it and see, 60-70 cm.

China's Ministry of Health has issued a national standard for the hygiene of school desks and chairs, which has determined the height standards for desks and chairs used by nine types of students of different heights

If the height of the student is less than 119 cm, the height of the desk used should be 52 cm, the height of the empty area under the desk should be 40 cm, and the height of the chair should be 29 cm;

2. Students with a height of 143 to 175 cm should be 67 cm in height, 55 cm in the open area under the desk, and 38 cm in the chair. Moreover, according to the regulations, the form of desks and chairs used in primary and secondary schools can be optional, but the main dimensions of the table height, the height of the empty area under the desk and the height of the chair must meet the national standards.

Today's desks are divided into the following three main categories:

1. Solid wood desk:

In 2000, most schools were using this traditional single and double desks made of solid wood. This kind of desk is easy to process, the material is miscellaneous wood, a lot of wood is wasted, and it is not durable, and it is still used by primary and secondary schools in many poor areas. Due to the fixed height of the desks and stools, they are gradually replaced by adjustable desks with steel-plastic structures.

2. Lifting desks:

The height of the desk is adjusted by adjusting the relevant firmware of the table leg between the sliding shafts to meet the needs of the school and students. This type of desk is mainly a steel-plastic structure, the desktop is melamine board, the table legs are steel pipe fittings, and the relevant connecting ground parts are protected by plastic caps.

3. Rubber and plastic desks:

Mainly using rubber and plastic alloy materials, mechanical molding school desks and chairs products, such products are mostly fixed structure, the height is not adjustable, but because of the special materials used, the material is good, durable and lightweight, and has also been adopted by some schools.

Grade 670mm

Grade 700mm

Grade 730mm

760mm for junior high school and above

China's Ministry of Health has issued a national standard for the hygiene of school desks and chairs, which has determined the height standards for desks and chairs used by nine types of students of different heights

For example, if a student is under 119 cm tall, the height of the desk should be 52 cm, the height of the empty space under the desk should be 40 cm, and the height of the chair should be 29 cm. Students who are between 143 and 175 cm tall should be 67 cm tall on desks, 55 cm in the open space under the desks and 38 cm in chairs.

According to GB T 3976-2014, secondary school desks are divided into desks 1 to 1. High schools generally use Desk 1.

The basic size of the No. 1 desk is made of iron desks, with a desk height of 760mm, a desk width of 650mm and 450mm, a drawer wall (excluding paint, the same below), a steel thickness of the board wall + other flat pipes and steel pipe thickness +, and the desktop is a one-time forming high-pressure nine-layer board.

For other types of desks, please refer to "School Desks and Chairs: Functional Dimensions and Technical Requirements" GB T 3976-2014.

The height of students' desks and chairs does not meet the standard, which has become a major factor in the increase in the incidence of myopia among students. According to the data survey, most of the desks and chairs used by junior students do not meet the national standards for desks and chairs.

According to the National Standards for the Hygiene of Desks and Chairs issued by the Ministry of Health, 9 categories of students of different heights have been identified, and there should be corresponding height standards for desks and chairs when they are used.

For example, if a student is between 143 and 157 cm tall, the height of the desk should be 67 cm, the height of the space under the table top should be 55 cm, and the height of the chair should be 38 cm.

In addition, it is also stated in the regulations that although the style of desks and chairs used in primary and secondary schools can be optional, they must meet the requirements of the national standard. But in reality, most of the desks and chairs do not meet the standards for the use of students' materials. In the survey, a school equipped first-year students with desks centimeters high, empty spaces under desks centimeters high, and chairs centimeters high.

This kind of collocation of the height of the desk and chair belongs to the high desk and the low chair, which is very easy to cause the lack of eye distance for primary school students, and it is likely to cause students to suffer from myopia due to ultra-close eyes.

The standard length of ordinary classrooms is 8 9 meters, the width of the barrage is 6 7 meters, and the floor height is generally around the right (ordinary classrooms), and the floor height of group classrooms or ladder classrooms has increased.

China's current national standard "School Desks and Chairs Hygiene Standards" GB 7792 stipulates that there are 10 models of desks and chairs used in primary and secondary schools, the desktop size is 0 60m 0 40m, and the high standard size of the desktop is 0 76m 0 49m.