Office Chair Springs
Office chair springs are mainly divided into two categories: lumbar support springs and gas springs, which respectively undertake dynamic support and height adjustment functions.
Lumbar Support Springs: Dynamic Fit to the Waist, Relieving Fatigue from Prolonged Sitting
Lumbar support springs are typically used in the lumbar support structures of office chairs, such as the four-dimensional floating lumbar support system of enova office chairs. Their core function is to achieve dynamic fit through built-in telescopic springs: when users adjust their sitting posture, the springs automatically extend or contract according to changes in lumbar pressure, consistently maintaining stable support for the lumbar spine. This design effectively disperses lumbar pressure, avoids local compression caused by fixed support, and thus reduces issues such as lower back pain and fatigue caused by prolonged sitting. The spring's elastic coefficient needs to match ergonomics, providing sufficient support while avoiding discomfort from excessive hardness.
Gas Springs: Core Components for Adjusting the Height of the Chair Back and Seat
Gas springs are the core components for the height adjustment function of office chairs, operating based on the pressure differential of high-pressure nitrogen gas inside. By controlling valves to adjust the connection status between two gas chambers, the piston rod extends or contracts under the action of the gas pressure difference, driving the seat or chair back to rise or fall. This structure enables office chairs to adapt to the needs of users of different heights while enhancing comfort during use.
Key Performance Indicators and Selection Points:
- Nitrogen Purity and Safety Certification: High-quality gas springs need to be filled with high-purity nitrogen to avoid the risk of explosion caused by oxygen mixing. Products should pass EN16955 strength certifications from agencies such as SGS and TรV to ensure pressure resistance and sealing.
- Lifespan Standards: The industry-standard lifespan is 30,000 to 50,000 reciprocating tests, with high-end products reaching up to 100,000 fault-free cycles. Lifespan directly affects the service life of office chairs, so it is essential to prioritize models with strong fatigue resistance.
- Force Value Accuracy: The output force of gas springs needs to match the load-bearing range of the chair seat, with an error controlled within 3%. Insufficient force can lead to inadequate support, while excessive force may cause difficulties in height adjustment or structural damage.
The performance of gas springs directly determines the smoothness of adjustment, safety, and durability of office chairs. When selecting, it is necessary to comprehensively evaluate the above indicators to avoid sacrificing core experience for low-priced products.
