Office Chair Claw Test
The office chair five-claw test primarily focuses on static load capacity, dynamic fatigue life, and stability. The core testing items include static load testing, armrest downward static load testing, reciprocating fatigue testing, tipping testing, and drop impact testing.
Static Load Testing: This is a key project to evaluate the five-claw's resistance to deformation and damage under continuous vertical loads. The test includes two methods: central vertical loading and eccentric vertical loading, simulating the working conditions when the user sits upright and when the center of gravity shifts. For example, some tests apply a force of 7560 N to the five-claw and hold it for 1 minute, repeating the process twice before checking for damage or deformation. There are also test procedures that slowly load up to 11120 Newtons and hold it for a certain period. The tests are conducted in a standard laboratory environment with constant temperature and humidity. The five-claw assembly is installed on the test platform according to its usage state, and the loading device applies the specified force uniformly at the designated position for the specified time. After unloading, the permanent deformation, cracks, or fractures are checked.
Armrest Downward Static Load Testing: When the user stands up or sits down with the help of the armrests, the force is transmitted to the five-claw through the armrests. This project tests the five-claw's ability to withstand such lateral forces.
Reciprocating Fatigue Testing: This simulates the repetitive actions of the user sitting down, standing up, sliding back and forth, and gently rocking during daily use. It applies cyclic alternating loads to the five-claw to evaluate its fatigue resistance and structural durability over long-term use.
Tipping Testing: This assesses the five-claw's ability to prevent the chair from tipping over as a whole when subjected to forward or lateral forces. This is closely related to the five-claw's spread angle, contact area with the ground, and structural rigidity.
Drop Impact Testing: This simulates the five-claw's impact toughness when the chair is accidentally dropped or subjected to an impact.
In addition, the office chair five-claw static pressure testing equipment simulates the static loads in actual usage scenarios by applying gradually increasing static pressure to the five-claw base to test its deformation and damage under different load conditions. The equipment can provide precise pressure control, set multiple testing stages, apply pressure at a fixed loading rate, and ensure stable and uniform pressure through hydraulic or electric devices. The office chair five-claw compression testing machine is controlled by a computer to apply vertical pressure to the five-claw to evaluate its compressive strength. It is driven by a servo motor, equipped with a high-precision load cell, and can automatically generate test curves such as force-time curves.
