Office Chair Compression Testing

Office chair compression testing typically involves two main testing devices, each targeting different scenarios for mechanical performance testing of the chair back and five-star base. Here are the details:

1. Office Chair Back Push Testing Device
This device is primarily used to simulate the dynamic pressure exerted by the human back on the chair back when sitting. Its core function is to test the durability, support, and safety of the chair back. Its working principle is based on mechanical structure and program control: an electric push rod applies periodic pressure to the chair back, simulating the action of the human back repeatedly leaning against it; at the same time, built-in sensors in the device synchronously collect pressure data and displacement data to form a dynamic pressure curve. For example, in durability testing, the device applies pressure to the chair back at a fixed frequency (such as 10 times per minute) for thousands of cycles, observing whether the chair back shows signs of material fatigue, structural loosening, or a decrease in support force. This type of testing ensures that the chair back maintains stable performance during long-term use and avoids safety hazards caused by back pressure.

2. Office Chair Five-Star Base Static Pressure Testing Machine
This device tests the static load-bearing capacity of the five-star base of an office chair, focusing on evaluating material compressive strength, structural stability, and deformation resistance limits. During testing, the device applies a vertical constant load (such as 500kg) to the center of the five-star base through a dedicated central pressure application structure and maintains it for a long time (such as 24 hours), simulating the stress states under daily prolonged sitting, center-of-gravity shifts, or heavy-load scenarios. For example, when testing the compressive strength of the five-star base material, the device gradually increases the load to the material's yield point and records deformation data; in structural stability testing, it observes whether the five-star base tilts or breaks under an offset load (such as 10cm from the center). This type of testing ensures that the five-star base remains stable under extreme usage conditions and avoids the risk of tipping due to base deformation.

The core difference between the two devices lies in the testing scenarios and mechanical models: back push testing focuses on fatigue performance under dynamic pressure, while five-star base static pressure testing focuses on structural strength under static loads. Through these two types of testing, manufacturers can comprehensively evaluate the mechanical performance of office chairs and ensure that their products meet safety standards and user needs.