Explosive Office Chair

An explosive office chair typically refers to a swivel and height-adjustable chair that bursts due to issues with its gas cylinder, posing a significant threat and potentially being life-threatening in severe cases.

Typical Cases and Hazards

The case of Ms. Liu in Fujian Province in 2013 is highly representative: while sitting on a swivel chair to blow-dry her hair, the chair suddenly exploded. A steel tube with a diameter of about 2 centimeters pierced through her lower body, and a large amount of metal fragments were removed from her abdominal cavity, with several pieces of metal residue remaining in her intestines. Such accidents can cause severe injuries in mild cases, requiring the victim to endure intense pain; in severe cases, they can directly endanger life due to internal organ damage or massive bleeding. According to statistics, over 40 similar tragedies have occurred in China over the past few decades, exposing the serious safety hazards of substandard office chairs.

Core Cause of Explosions: Issues with the Gas Cylinder

1. Difference in Gas Composition
   The gas cylinders of genuine products are filled with inert nitrogen, which has stable chemical properties and can withstand thousands of kilograms of pressure. In contrast, substandard products are secretly replaced with compressed air, where the oxygen accelerates the oxidation of the metal inner wall, causing the steel to become brittle and significantly reducing its pressure resistance.
2. Heat Accumulation and Pressure Increase
   The heat generated by daily lifting and lowering friction, combined with the impact of high-temperature exposure in summer or sudden sitting, can cause the internal pressure of the gas cylinder to rise sharply. If the metal inner wall has become brittle due to oxidation or has fine cracks, the pressure will trigger an explosion once it exceeds the critical value.

Preventive Measures and Purchase Recommendations

1. Choose Reputable Brands and Certifications
   Prioritize chairs that have passed national safety certifications (such as SGS, BIFMA, etc.) and confirm that the gas cylinder has explosion-proof design features (such as steel stamps or explosion-proof steel plates).
2. Inspect the Details of the Gas Cylinder
   Genuine gas cylinders are usually silver or black, with a smooth surface free of rust. Substandard products may use inferior steel, resulting in a rough surface or obvious welding marks.
3. Avoid Rough Handling
   Avoid frequently and rapidly adjusting the height, suddenly sitting down, or hitting the chair during use to prevent damage to the internal structure of the gas cylinder.
4. Regular Inspection and Maintenance
   If the chair experiences stuttering during lifting and lowering, makes abnormal noises, or the surface of the gas cylinder is deformed, stop using it immediately and contact a professional for inspection and repair. Do not disassemble the gas cylinder yourself.