Under Parts of Office Chair

The knobs under the office chair usually have functions such as adjusting the backrest hardness, chair height, locking and unlocking, controlling the backrest elasticity and tilt angle, and smart force matching. Details are as follows:

Adjusting the backrest hardness: This is one of the common functions of the knob under the office chair. By rotating the knob clockwise, the backrest of the chair can be made harder, providing stronger support for users who need to maintain an upright sitting posture for a long time or engage in high-intensity work. Conversely, rotating the knob counterclockwise will make the backrest softer, offering more flexible support, suitable for those who need to frequently change their sitting posture or engage in light work. Some high-end office chairs, such as the Habitat P2Pro, have knobs that can also control the degree of protrusion of the lumbar support, enabling three-dimensional adjustment up, down, left, and right to better fit the user's lumbar curve and provide personalized support.

Adjusting the chair height: The lever under the office chair is also commonly used to adjust the chair's height. By rotating the lever up and down, the height of the chair can be easily adjusted to meet the needs of different heights and usage scenarios. Rotating the lever upwards will raise the chair, while rotating it downwards will lower the chair. Some chairs have more refined knob designs with inner and outer rings, where the inner ring is specifically used for height adjustment, such as the ErgoHuman Gold B and other models.

Locking and unlocking functions: Some office chair levers also have locking and unlocking functions. Pushing the lever inwards can lock it, fixing the current state of the chair and preventing accidental movement or adjustment during use. Pulling the lever outwards will invalidate the locked state, releasing the chair's lock and allowing users to freely adjust the chair's various parameters as needed.

Controlling the backrest elasticity and tilt angle: The knobs on some office chairs are also used to control the backrest's elasticity and tilt angle. By tightening the knob clockwise, the elasticity of the backrest can be increased, making it firmer; while rotating it counterclockwise will make the backrest softer, allowing users to tilt the backrest at a larger angle and enjoy a more comfortable rest experience.

Smart force matching: Some high-end office chairs, such as the NetEase Yanxuan Starship Pro, are also equipped with a smart force matching function. When a user sits on the chair, it can automatically sense the user's weight and match the appropriate force according to the weight, providing more personalized support and comfort.