Buttons Under the Office Chair

The buttons under the office chair are mainly used to adjust the backrest hardness, chair height, and locking or unlocking functions. Here are the specific functions:

1. Adjusting Backrest Hardness
The button under the office chair can change the support strength of the backrest by rotating. When rotated clockwise, the backrest becomes harder, providing stronger support, suitable for scenarios where a fixed sitting posture needs to be maintained for a long time, such as focused office work or reading; when rotated counterclockwise, the backrest becomes softer, offering more flexible support, suitable for situations where frequent posture adjustments or relaxation are required. This design can meet the personalized needs of different users for lumbar support and reduce fatigue from prolonged sitting.

2. Adjusting Chair Height
The up-and-down rotation function of the button (or lever) is used to control the overall height of the chair. When rotated upwards, the gas spring is activated, and the seat rises; when rotated downwards, the seat descends. This function is achieved through a pneumatic device, allowing users to adjust the seat according to the height of the desk or their leg length, ensuring that their feet are flat on the ground and their knees are at a 90-degree angle, maintaining an ergonomic sitting posture and avoiding shoulder, neck, or waist pressure caused by improper height.

3. Locking or Unlocking Function
Some office chairs have a locking mechanism on the lever. Pushing the lever inwards can fix the current state of the chair, such as locking the backrest angle or seat rotation function, preventing accidental movement during use; pulling the lever outwards releases the lock, restoring the flexibility of backrest adjustment or seat rotation. This function is particularly useful when a stable sitting posture (such as typing) or free movement (such as communicating with colleagues) is required.

Precautions

• When adjusting the height, maintain a sitting posture and apply force evenly to avoid damage to the gas spring due to sudden force.
• Ensure that the locking function is fully in place to prevent safety hazards caused by looseness.
• If the button operation is stuck, check for foreign object blockage or gas spring leakage, and contact after-sales service for maintenance in a timely manner.

By using these buttons reasonably, users can significantly improve the comfort and practicality of the office chair and adapt to diverse work scenarios.