What is the most comfortable height ratio of tables and chairs?
The height difference of chairs should be controlled within the range of 280 ~ 320mm. The national standard has stipulated the height of tables and chairs. Among them, the height size standard of dining table furniture can be 700mm, 720mm, 740mm and 760mm; The height of chairs and stools can be 400mm, 420mm and 440 mm. In addition, the standard size of tables and chairs is stipulated, and the height difference between tables and chairs should be controlled within the range of 280 ~ 320 mm.
The correct height of tables and chairs should enable people to keep two basic verticals when sitting. First, when the feet are flat on the ground, the thighs and calves can be basically vertical, and then the front edge of the seat can't press the lower plane of the thighs. Second, when the arm hangs naturally, the upper arm is basically perpendicular to the forearm, and the height of the desktop should just touch the lower plane of the forearm. In this way, people can keep the correct sitting posture and writing posture. If the height of tables and chairs is not properly matched, it will directly affect people's sitting posture, which is not conducive to the health of users. Therefore, the height of the space under the desk is not less than 580mm, and the width of the space is not less than 520 mm. ..
How to choose tables and chairs correctly
1, materials should be environmentally friendly.
The general materials of desks are wood, wood-based panels and plastics. These materials have their own characteristics, but they should be selected on the premise of firmness and practicality. Specifically, it requires environmental protection and no odor, and the coating on the surface should have the characteristics of colorfastness and scratch resistance.
2, scientific size selection
When choosing tables and chairs, you must also choose ones that conform to ergonomic principles. The size of tables and chairs should be combined with the user's height, age and body shape. Generally speaking, the standard for children's desks is 1. 1? 1.2m, 0.76m high and 0.55-0.6 wide; The standard of chairs is 0.4-0.44m, and the overall height is no more than 0.8m, which can basically meet the needs of school-age children. Of course, this size is not suitable for preschool children or college students.
3. Safety is
Matsumoto Jiabao children's furniture reminder: safety is the first consideration when purchasing books, tables and chairs. The lines of tables and chairs should be smooth, round or curved, with smooth switches and delicate surface treatment. In addition, when shopping, you can shake it a few times, and furniture with loose structure and rickety feeling is not allowed.
The above is a summary of the most comfortable height ratio of tables and chairs and how to choose tables and chairs correctly. The height of tables and chairs is very important. Everyone should give full consideration to comfort when choosing. For everyone, every comfortable desk and chair will be good for children's health. In short, everyone should fully understand the choice of tables and chairs to ensure the safety of children.