Office Chair Rotary Button
The rotary buttons beneath office chairs typically serve multiple functions, including adjusting the backrest elasticity, controlling the lumbar support, regulating the backrest hardness, adjusting the chair height, locking and unlocking, as well as performing special adjustments for specific brands.
Adjusting Backrest Elasticity and Tilt Angle: This is a fundamental and common function of the rotary button. By turning the button clockwise, the backrest becomes tighter, requiring more force to tilt, which is suitable for scenarios requiring strong support. Turning it counterclockwise makes the backrest softer, allowing for easier tilting and meeting the personalized needs of different users regarding backrest elasticity.
Controlling Lumbar Support Protrusion: Some high-end office chairs are equipped with adjustable lumbar supports, and their rotary buttons can control the degree of lumbar support protrusion. For example, the Baobao P2Pro not only allows for three-dimensional adjustment of the lumbar support (up, down, left, and right) but also enables precise control of the lumbar support's protrusion height through the rotary button, better conforming to the human body's lumbar curve and providing comfortable lumbar support.
Regulating Backrest Hardness: The rotary button can also adjust the hardness of the backrest. When rotated clockwise, the chair's backrest becomes harder, providing stronger support, suitable for users who maintain a fixed sitting posture for long periods or require strong back support. Rotating it counterclockwise makes the backrest softer, offering more flexible support and allowing users to adjust their sitting posture more freely.
Adjusting Chair Height: Some office chairs' rotary buttons also have the function of adjusting the chair height. By rotating the lever up and down, rotating it upward raises the chair, while rotating it downward lowers the chair, facilitating users to adjust the chair height according to their height and usage needs to maintain the correct sitting posture.
Locking and Unlocking Function: The rotary buttons on some office chairs have locking and unlocking functions. Pushing the lever inward locks the chair, fixing its current state and preventing accidental movement or tilting during use. Pulling the lever outward unlocks the chair, allowing for free adjustment.
Adjustments for Specific Brand Chairs: There may be differences in the functional design of rotary buttons among office chairs from different brands. For example, the knob on the Ergohuman Gold B has an inner and outer ring, with the inner ring used for height adjustment and the outer ring for controlling elasticity. The NetEase Yanxuan Starship Pro automatically senses the user's weight to match the force upon sitting. The right-side knob on the Henan Tianzhuo Furniture's ergonomic 4D lumbar support chair allows for lumbar pillow adjustment when rotated fully clockwise and locks it when rotated fully counterclockwise.
