Pneumatic Office Chair

A pneumatic office chair is a type of chair that adjusts its height through air pressure, commonly found in office settings. It offers functions such as height adjustment, comfort, and versatility, but attention should be paid to safety risks.

I. Working Principle and Core Structure
The core of a pneumatic office chair is its internal cylinder mechanism. The cylinder is typically filled with nitrogen at a pressure of 1-2 atmospheres (with a purity of ≥99% in genuine products), and the pressure is maintained stable by a seal ring. The piston rod inside the cylinder can move up and down under the influence of air pressure, working in conjunction with the adjustment handle on the side of the seat to achieve the chair's height adjustment function. When the user operates the handle, changes in the air pressure inside the cylinder push the piston rod to move, thereby adjusting the seat height.

II. Functional Features

1. Ergonomic Design: Some products are designed based on ergonomic principles, with the curves of the backrest and seat cushion fitting the human spine, effectively relieving fatigue caused by prolonged sitting.
2. Reclining Lock Adjustment: Some models support adjustment of the backrest's reclining angle and can be locked in specific positions to meet different needs for rest or work.
3. Wide Height Adjustment Range: For example, some products offer a height adjustment range of 440mm-600mm or 530mm-690mm (with a 160mm height-adjustable gas rod), accommodating users of different heights or desk heights.
4. Diverse Materials: According to customer needs, the seat surface can be made of high-quality eco-friendly leather, velvet, or genuine leather, balancing comfort and durability.

III. Safety Risks and Precautions

1. Quality of the Gas Cylinder: Poor-quality gas cylinders or insufficient gas purity (such as the presence of oxygen) may lead to a sudden increase in pressure under frequent height adjustments or high-temperature conditions, posing an explosion risk.
2. Usage Guidelines: Avoid violent operation of the adjustment handle and regularly check the seal of the gas cylinder to prevent gas leakage or abnormal pressure.
3. Environmental Restrictions: Keep away from high-temperature sources (such as radiators and direct sunlight) to prevent the gas inside the cylinder from expanding due to heat and causing danger.

IV. Typical Market Products

1. Kejienuo Antistatic Backrest Pneumatic Chair: Made of stainless steel and certified by the antistatic association, it is suitable for office settings sensitive to static electricity.
2. Lianfa/YZ-02 Model Pneumatic Office Chair: With a simple style, its seat is made of antistatic PU leather, available in blue and black. It is equipped with a carbon steel chrome-plated five-star base and high-strength wear-resistant nylon casters, with a system resistance of ≤10⁹Ω, balancing antistatic properties and practicality.