Office Chair Round Knob

The main function of the round knob under the office chair is to adjust the backrest's elasticity and tilt angle, and some can also control the protrusion degree of the lumbar support. There are differences in functions among different brands.

Firstly, adjusting the backrest's elasticity and tilt angle is the basic function of the round knob. For most office chairs, turning the round knob clockwise tightens the backrest, making it firmer and providing stronger support for users. This is suitable for those who need to maintain an upright sitting posture or engage in high-intensity work. Turning it counterclockwise makes the backrest softer and increases its tilt flexibility, allowing users to relax their bodies, take short breaks, or adjust their sitting posture more freely.

Secondly, the round knobs of some high-end chairs have more diverse functions and can control the protrusion degree of the lumbar support. Taking the Haibao P2Pro as an example, its round knob enables three-dimensional adjustment of the lumbar support, including up-down and left-right movements. By rotating the knob, users can precisely adjust the height and left-right position of the lumbar support according to their own waist position and support needs, making the lumbar support better fit the waist curve, providing personalized lumbar support, effectively reducing waist pressure, and preventing waist fatigue and injury.

In addition, there are differences in the functional design of the round knobs of office chairs from different brands. For example, the knob of the Ergohuman Gold B is divided into an inner and outer ring. The inner ring is used to adjust the backrest height, and the outer ring controls the backrest's elasticity. This design allows users to perform two different adjustment operations with one knob, improving convenience. The NetEase Yanxuan Starship Pro is even more intelligent. Its round knob has the function of automatically sensing the user's weight. When the user sits on the chair, the chair can automatically match the appropriate backrest elasticity according to the weight, without manual adjustment, providing users with a more comfortable and convenient experience.