Spanish Office Chair Evaluation
The Spanish office chair evaluation is primarily based on standards such as UNE 57115 and UNE EN 1335-1:2021, assessing product safety and reliability from multiple dimensions including stability, durability, and component performance.
Stability Testing: Core Safety Indicator
The UNE 57115 standard evaluates anti-tipping capabilities by simulating real-world usage scenarios. For example, it tests the chair's stability during forward leaning, backward reclining, or sideways reaching, ensuring the chair does not tip over during sudden movements by the user. The UNE EN 1335-1:2021 standard also includes similar tests, requiring the chair to maintain structural stability when tilted (e.g., when reclined to the maximum angle). These tests are directly related to safety in office settings, especially for users with larger body weights or frequent movement patterns.
Durability Testing: Long-Term Usage Guarantee
Durability testing focuses on the fatigue resistance of the seat and backrest. The UNE 57115 standard specifies that testing equipment must simulate the action of a person sitting down, applying a load to the seat surface at a frequency of 15-30 times per minute, with a cycle count typically exceeding 50,000. The backrest must undergo repeated reclining tests to evaluate the attenuation of its support force. The UNE EN 1335-1:2021 standard further refines requirements, such as requiring the seat to withstand continuous static pressure for 24 hours to observe whether material deformation remains within safe limits. These tests ensure that the chair provides stable support after long-term use, avoiding safety hazards caused by component aging.
Component Performance Testing: Details Determine Quality
Caster Wear Testing: Simulates the chair's movement on different floor materials such as wood and carpet, testing its flexibility and wear resistance. The UNE 57115 standard requires casters to rotate smoothly after thousands of movements without jamming or detachment risks.
Gas Lift Durability Testing: Evaluates the reliability of the adjustment mechanism through continuous lifting and lowering operations. The standard specifies that the gas lift must complete tens of thousands of lifting cycles to ensure stable lifting function without air leakage.
Armrest Strength Testing: Tests the structural stability of the armrests when subjected to vertical pressure or lateral thrust. The UNE EN 1335-1:2021 standard requires the armrests to remain free of deformation or breakage after withstanding a pressure of 100 kg, ensuring user safety when leaning on them.
Standard Differences and Application Scenarios
UNE 57115 focuses more on specialized testing for swivel chairs, suitable for evaluating dynamic functions such as rotation and lifting. In contrast, UNE EN 1335-1:2021 has a broader scope, covering requirements for the overall design and material safety of the chair. Consumers can choose reference standards based on their usage needs: if frequent adjustment or movement of the chair is required, the test results of UNE 57115 are more valuable; if long-term sitting comfort is a concern, the durability data of UNE EN 1335-1:2021 is more critical.
