1208A

Product size:

Aluminum alloy foot appearance and size:

1. The casting process must not have large pores, looseness, slag inclusions and other undesirable phenomena.

2. There should be no burrs or flash around the foot after it is formed.

3.Surface polishing and anti-oxidation treatment.

4. The armrests and writing board are tilted upwards by 6.5 degrees, and a standing sample is required.

2. Technical requirements

1. The chair is designed and manufactured according to the principles of ergonomics and morphological aesthetics. The curvature of the back cushion and seat cushion fully conforms to the curve of the human body. The seat height and seat depth are reasonable, the sitting feeling is comfortable, the seat cushion can automatically return to its original position, and the appearance of the chair is simple and beautiful.

2. The basic center distance of the seat is 560±10mm, the side depth of the seat when opened is 470±10mm, the side depth of the writing board when opened is 800±10mm, the chair height is 1015±10mm, and the minimum row distance is 900 mm.

3. Under the premise of ensuring the comfort of the audience, the back cushion height shall not exceed 1015mm to increase the sound reflection area of ​​the chair backboard and improve the sound absorption of the seat; sound-absorbing holes shall be made on the seat bottom plate as needed to keep the sound absorption of the seat as consistent as possible at different occupancy rates.

4. Hidden writing board: The aluminum head and support plate of the writing board are made of high-quality aluminum alloy material through die-casting. The writing board panel is made of ABS composite material through mold injection molding. The writing board is fixed by mechanical high-strength bolts, so that the connection parts of the writing board become stronger and stronger with use, and there will be no loosening. Dimensions: length 381.2±2mm, width 261.2±2 mm, thickness 45mm; the armrest and writing board are tilted upward 6.5 degrees to ensure the natural state of writing. The writing board must have a muffler function when it is opened and recycled, and there must be no rebound force and noise.

5. The fabric is made of high-grade knitted fabric and has been treated with anti-static and anti-moth treatment. It feels comfortable and will not wrinkle, break, pilling or fade after long-term use.

6. The seat foams are all polyurethane cold-foamed high-rebound sponges with high strength and good resilience. The seat sponge dimensions are: length 480±5mm, width 460±5mm, height 150±5mm, sponge density 50-55KG/M3, back sponge dimensions: length 460±5mm, width 750±5mm, height 140±5mm, sponge density 45-50KG/M3.

7. Aluminum alloy footrest: Made of high-quality aluminum alloy material, the aluminum alloy handrail width ≥50mm, weight ≥2.9KG. The polished surface of the handrail adopts a curved surface design to ensure the full beauty of the product.

8. Seat armrest cover: Made of high-quality imported oak solid wood, with curved shape, no deformation or cracking. Armrest size specifications: Length 355.4±2mm, width 60±2mm, height 30±2mm.

9. Seat hardware frame: It is made of high-strength high-quality carbon steel plate by stamping, bending and welding. At the same time, 5 S-shaped springs with a diameter of 2.5mm are added to ensure the comfort of the seat.

10. The seat adopts a damping return mechanism, with two-level buffering that is fast at first and then slow, so that the seat can return to its position within 3 seconds and has an escape silencer function. Rubber pads are added to the collision part of the seat to prevent collision and reduce noise, so that the seat opens without noise and returns slowly without impact.

11. The seat and back outer panels are made of high-quality plywood and are formed by mold bending. The appearance is arc-shaped, beautiful and elegant, with beautiful curves. The size of the back outer panel: length 740±2mm, width 495±2mm, thickness 15mm. The size of the seat outer panel: length 440±2mm, width 425±2mm, thickness 12mm.

12. Use hidden pressure-explosion screws to fix the ground, and specially designed plastic dust cover to ensure that the chair legs are smooth and beautiful while preventing dust accumulation and facilitating cleaning.