Follow-up on Office Chair Explosions

The follow-up on office chair explosions involves accident cases, inspection issues, causes, and preventive measures, highlighting the need for heightened attention to safety risks.

I. Accident Case Warnings

Several office chair explosion incidents in recent years have drawn attention: In 2007 in Zhoushan, Zhejiang; in 2009 in Jiaozhou, Shandong; and in 2017 in Anhui, pneumatic chair explosions occurred, resulting in casualties or property damage. Among them, Ms. Liu in Xiamen suffered from intestinal perforation due to an explosion of a pneumatic lift chair, requiring a 5-hour surgery to remove over a dozen fragments, underscoring the lethal risks of poor-quality pneumatic chairs.

II. Market Inspections Reveal Hidden Dangers

A 2020 inspection by the State Administration for Market Regulation revealed that 23.3% of office chairs failed quality checks, with swivel chairs being particularly problematic. Key defects included substandard temperature resistance of pneumatic rods and the absence of explosion-proof steel plates, posing explosion risks for office chairs produced by some companies. Prolonged use of these non-compliant products may lead to explosions due to pneumatic rod failure.

III. Core Causes of Explosions

1. Structural Defects in Pneumatic Rods: Thin tube walls and insufficient purity of inert gases (or substitution with compressed air) result in unstable internal pressure.
2. Improper Use Exacerbates Risks: Uneven wall thickness and excessive preloading of gas springs, combined with frequent height adjustments or rotations, cause overheating of pneumatic rods, ultimately leading to explosions.

IV. Scientific Preventive Measures

1. Choose Certified Products: Prioritize products priced over 200 yuan, clearly labeled with manufacturer information, certification marks, and trademarks, avoiding "three-no" pneumatic chairs.
2. Inspect Key Components:
   • Test the smoothness of pneumatic rod adjustments, ensuring no jams or unusual noises;
   • Verify the installation of an explosion-proof steel plate with a thickness of ≥2 mm between the seat cushion and pneumatic rod, effectively blocking fragment splatter.
3. Adopt Proper Usage Habits: Avoid prolonged continuous height adjustments or rotations to prevent overheating of pneumatic rods; regularly inspect the appearance of the pneumatic chair, immediately discontinuing use if cracks or deformations are found.

Reminder: Although pneumatic chair explosions are rare, their consequences can be severe. Consumers should enhance safety awareness, purchase certified products through legitimate channels, and conduct regular maintenance and inspections to mitigate risks from the source.