Office Chair Explosion Danger

The term 'office chair explosion danger' refers to the explosion phenomenon of pneumatic lift office swivel chairs caused by component defects, which mostly occurs in low-quality pneumatic rod products and can cause serious personal injuries or even endanger lives.

Causes of Explosion

1. Quality issues with the pneumatic rod: If the wall of the pneumatic rod is too thin, the purity of the inert gas is insufficient, or it is replaced by compressed air, the structural stability will decline. During frequent lifting and lowering, friction inside the pneumatic rod generates heat, and a sudden temperature rise may trigger gas expansion and explosion.
2. Component defects: If the sealing ring is not installed or is aged, leading to air leakage, the internal air pressure will become unbalanced. Some products are not equipped with explosion-proof steel plates, which cannot buffer the impact of the explosion, directly causing the chair surface to rupture.

Explosion Power and Consequences

• Physical impact: When an explosion occurs, the energy released instantaneously by the pneumatic rod can reach a maximum of 70-80 kilograms, which is enough to propel the chair surface and the human body up to more than 1 meter high, and the fragments fly at extremely high speeds.
• Personal injuries: In mild cases, it can cause serious injuries such as buttock explosions and rectal tears. In severe cases, it can endanger lives. For example, in the 2009 Jiaozhou, Shandong case, a 14-year-old boy was killed by a top rod that pierced his body.
• Property damage: Explosion fragments may damage surrounding items. For example, in the 2017 Anhui case, a computer case was blown up.

Typical Cases

• In 2007, Zhoushan, Zhejiang: The chair Ms. Lou was sitting on exploded, the seat was blown through, and the fragments penetrated her body up to 10 centimeters deep.
• In May 2010, Xiamen: A woman sitting on a pneumatic chair to blow-dry her hair experienced an explosion, resulting in serious injuries.
• In 2017, Anhui: An office chair explosion affected a computer case, causing property damage.

Preventive Measures

1. Choose genuine products: Give priority to office chairs priced above 200 yuan that have passed safety certifications and avoid buying unbranded products.
2. Check safety devices: Ensure that the pneumatic rod lifts and lowers smoothly. An explosion-proof steel plate with a thickness of at least 2 millimeters is installed between the seat cushion and the pneumatic rod, which can effectively buffer the impact of the explosion.
3. Standardize usage habits: Avoid frequent lifting and lowering or long-term exposure to the sun to reduce the risk of a sudden temperature rise inside the pneumatic rod. Regularly check the airtightness of the pneumatic rod. If air leakage or abnormal noises are found, stop using it immediately.