BK-B03 Hand-cranked desk and chair
- Desktop specifications (mm) : Length 650 × Width 450 (±5) × Thickness28.
- Dimensions of the desk drawer (mm): Length 500 × Width 350 × Height 130 (±5)
- Backrest dimensions (mm): Width 410 × Height 375 × Thickness 67 (±5)
- Seat panel dimensions (mm): 415 × 430 × 92 (±5), wall thickness 5mm.
Detailed Introduction
Ⅰ. Materials
The tabletop is made by injection molding of new environmentally friendly grade 1 ABS engineering plastic, which has functions such as impact resistance and no deformation. The size is stable and does not deform. The table frame is made of high-quality flat round tube steel. The base (mm) is 30×60×1.2 (±0.1) mm. The connecting crossbars are welded from 25*50*1.2 thick flat round national standard cold-rolled steel pipes. The table drawer, backrest, seat panel, etc. are made by one-time injection molding of PP plastic, without using recycled materials.At the horizontal elliptical tube reinforcement on the bottom of the desk, a backpack holder is set up. It uses circular or elliptical shapes with a size of ≥1.5cm x 1.2mm. For the longitudinal part, it uses ≥0.3mm reinforcing bars, and the spacing of the reinforcing bars is ≤5cm.
Detailed Introduction
Ⅱ. Functions
At the chest area of the tabletop, an inward-arc shape is designed based on ergonomic principles to ensure that students' elbows are comfortable. Above the center front of the tabletop and on the left and right upper corners, there are three-dimensional U-shaped anti-falling protrusions which can prevent pens and papers from slipping. The backrest and seat are designed according to ergonomic chairs, providing good support. At the same time, based on the curve of the spine of teenagers according to ergonomic principles, they can effectively reduce fatigue. There are ventilation holes on both sides of the backrest and seat, which have the functions of heat dissipation and ventilation, preventing sweating, maintaining ventilation and dryness, and having an attractive appearance. They are comfortable to sit on for a long time.
