Anhui Office Chair Explosion
An explosion of an office chair occurred in Anhui, specifically in 2017 when an office chair in Anhui exploded, causing damage to a computer case. Here is a detailed analysis of related incidents and the causes of explosions in pneumatic swivel chairs:
Anhui and Similar Pneumatic Swivel Chair Explosion Incidents
In 2017, an office chair explosion occurred in Anhui, resulting in damage to a computer case. Although no casualties were reported, it exposed the potential safety hazards of pneumatic swivel chairs. Additionally, a more serious incident of the same kind occurred in Jiaozhou, Shandong in 2009: a 14-year-old boy was killed when a pneumatic chair exploded while he was adjusting it, and the top rod pierced into his body. Both incidents involved pneumatic swivel chairs and were related to quality or design defects in the pneumatic rods.
Main Causes of Explosions in Pneumatic Swivel Chairs
- Low-quality Pneumatic Rods
Pneumatic rods are the core components of pneumatic swivel chairs, and their quality directly affects safety. Low-quality pneumatic rods may have the following problems:
- Thin tube walls: Unable to withstand high pressure, they are prone to breakage under frequent use or external impact.
- Impure inert gases: Regular pneumatic rods should be filled with high-purity inert gases such as nitrogen. If air or oxygen is mixed in, an explosion may occur due to high temperature or friction.
- Replacement with compressed air: Some unscrupulous manufacturers use ordinary compressed air instead of inert gases to reduce costs, resulting in a significant decrease in the stability of the pneumatic rods.
- Absence of Explosion-proof Steel Plates
Explosion-proof steel plates serve as a safety barrier for pneumatic swivel chairs, located between the seat bottom and the pneumatic rod. Their function is to block debris from flying during a pneumatic rod explosion, reducing the risk of injury. If not installed or if the plate thickness is insufficient, the debris generated by the explosion may directly impact the human body or surrounding objects.
Safety Recommendations
To avoid similar accidents, consumers should choose reputable brands when purchasing pneumatic swivel chairs, check whether the products have passed national safety certifications (such as the GB/T 10357 series standards), and confirm whether the pneumatic rods are marked with safety levels (such as Class 3 or Class 4). During use, avoid frequently adjusting the seat height to reduce wear on the pneumatic rods; if abnormal seat wobbling or difficulty in adjustment is detected, stop using it immediately and contact after-sales service for inspection and repair.
