Destruction of Office Chair Pneumatic Rods

The destruction of office chair pneumatic rods mainly stems from the explosion of the pneumatic rods, which possess immense destructive power and can lead to serious injuries or even life-threatening situations.

Causes of Pneumatic Rod Explosions

• Insufficient Gas Purity: High-purity inert nitrogen gas is filled inside genuine pneumatic rods, which is stable and safe to control. However, some unscrupulous manufacturers use ordinary compressed air instead of nitrogen to save costs. The oxygen in the air reacts with the metal inner wall through oxidation, causing continuous rusting and heat accumulation. This turns the pneumatic rod into a sealed pressure cooker, with internal pressure soaring, the outer tube wall becoming thinner and more brittle, and ultimately leading to a possible explosion.
• Weak or Poor-Quality Container Walls: If the container wall of the pneumatic rod is not strong enough or made of inferior materials, it is prone to explode under internal high pressure.
• Inadequate Sealing at the Seal: If the seal of the pneumatic rod is not tight, it can cause gas to escape, triggering an explosion, although the likelihood of this happening is relatively low.

Serious Accidents Caused by Pneumatic Chair Explosions

• In 2013, Ms. Liu was sitting on a swivel chair purchased online to blow-dry her hair when the pneumatic rod at the bottom exploded. A steel rod with a diameter of 3 centimeters pierced through her body like a shell, and dozens of metal fragments were extracted from her abdomen and intestines.
• Between 2007 and 2009, pneumatic lift chair explosions occurred in Zhoushan, Zhejiang; Yantai Development Zone; Ganzhou, Jiangxi; and Jiaozhou, Shandong, resulting in injuries and even deaths. For example, in Jiaozhou, Shandong, a 14-year-old boy named Xiaogang was adjusting the height of his pneumatic chair when the pneumatic rod suddenly exploded, piercing through his buttocks and injuring multiple blood vessels, leading to his death despite rescue efforts.
• Additionally, there were cases such as a 28-year-old white-collar worker in Hangzhou suffering severe waist injuries and becoming permanently disabled, and a pregnant woman in Quanzhou, Fujian, having a miscarriage due to an explosion.

Suggestions to Avoid Pneumatic Chair Explosions

Regularly inspect the pneumatic rod for cracks, looseness, or abnormal shaking. If you find difficulty in adjustment or unusual noises, immediately stop using it and have it inspected by a professional. Consider replacing it after more than three years of use. Also, when choosing a swivel lift chair, always opt for genuine products through legitimate channels.