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Student desks and chairs play a very important role in students' daily learning, and daily work cannot be separated from them. The usage rate is relatively high, so students should comply with the human body size chart. This not only helps them develop good sitting habits, but also improves work efficiency and reduces the incidence of occupational diseases. Students use tables and chairs as representatives of furniture. Student desks and chairs are receiving increasing attention from people. The design of tables and chairs should pay more attention to ergonomic principles to cultivate good sitting habits. The discomfort caused by poor posture and furniture can affect the healthy development of students.
Middle school student stool size: 345mm * 240mm × (455-395) mm, primary school student feces size: 345mm * 240mm * (425-365) mm 2, stool surface size and requirements: 345mm * 240mm, AA oak material thickness 20mm board. The edges around the stool surface are circular in shape. 3. Bench lifting side: The upper part of the main body is 19mm wide, 160mm wide, 180mm high, 15mm high, and 1.2mm thick cold-rolled steel plates. The edge thickness is molded for lifting, and the center distance of the lifting holes is 30mm, totaling five ×*。 Three gears are adjusted, with a center distance of 60mm for each center lifting hole fixing screw, and a primary lifting range of (425-365) mm. Both sides and middle section of middle school students (45-395) have tendon reinforcement. The stool is connected to the main body through self tapping (at least 4 screws), rather than Ruth. 4. Stool legs: The lower legs of the stool are cold-rolled 25mm × 50mm * 1.4mm, with a bottom leg length of 27mm. The height of the bottom leg is 270 millimeters, and the distance between the two columns is 30mm. The two columns on both sides are connected to a 60mm long 250mm flat circular steel pipe with a length of 20mm × 50mm × 1.4mm connected at 60mm of the bottom leg.
Key points for selecting student desks and chairs: height 1. The height of desks and chairs is different from that of primary school, middle school, and university. As one ages, the height of desks and chairs varies. If we do not pay attention to this during the procurement process, purchasing unsuitable tables and chairs is undoubtedly detrimental to the healthy development of students. 2。 The welded joints of the tables and chairs are uniform and full. If there are only 35 welding points, it is easy to interrupt during use. Check if the welded components are assembled together. III. The current quality of tables and chairs is mostly made of iron tables and chairs, with wooden boards added. Firstly, it is necessary to check if the painted surface has fallen off. Secondly, the panel has no defects. These two types of defects will be easy to expand and reduce service life. 4。 A safe touchpad and chair should be checked for burrs as a whole, which will be used in cases of student skin scratches. Let's see if the screws on the connecting board are in contact.
As is well known, most students spend their study life in front of their desks and chairs. Students have a long learning time and are at a critical stage of physical development. Incorrect sitting posture can cause serious diseases such as neck discomfort, dizziness, blurred eyes, limb weakness, fatigue and drowsiness, such as myopia, hunchback, cerebral vasospasm, spinal curvature, abnormal curvature, etc. E of spine It will affect the cardiopulmonary blood circulation, respiration and digestive function, thereby reducing vital capacity. This will greatly affect students' interest in learning and cast a shadow over their psychology. If the anterior position of the neck is too large, the neck muscles may experience stress due to overloading, leading to cervical tension syndrome and even an increased risk of cervical spondylosis. High, all these dangers must be brought to our attention.