Adjusting the Recline Angle of an Office Chair

The operation of adjusting the recline angle of an office chair requires selecting the appropriate method based on the chair's style. The core steps include unlocking, adjusting the angle, locking, and returning to an upright position, as detailed below:

I. Basic Adjustment Steps

1. Unlocking the Recline Function
   The adjustment handle of most office chairs is located on the right side of the seat (a few on the left), and it can be in the form of a lever, knob, or pull rod. Sit upright and gently pull the handle; you will hear a 'click' sound indicating that the lock has been released. If the chair is equipped with an independent recline lock (such as high-end models), you need to first pull up the locking switch located beneath the seat.
2. Adjusting the Angle
   Slowly lean back while continuously pulling the handle, and the backrest will gradually recline with the pressure. Release the handle when you reach a comfortable angle, and the backrest will automatically lock.

• Mechanical Knob Type: Rotate the knob on the base (usually marked with arrow directions) to control the resistance. You need to manually test the tightness, suitable for traditional office chairs.
• Pneumatic Rod Linkage Type: When reclining, gently push the seat towards the backrest to activate the cushioning function. High-end models support synchronous adjustment of the armrests (such as the one-button synchronous design of the Sihoo M1).
• Smart Touch Type: Set the angle through buttons on the backrest or an app. Some models can remember your preferred settings.

3. Returning to Upright Position
   Pull the handle or knob again, and the backrest will bounce back to its initial position with the assistance of the pneumatic device.

II. Scientific Angle Recommendations

1. Office Mode (60° - 90°)
   Keep your line of sight level with the top of the screen, with your neck naturally drooping to reduce cervical spine pressure.
2. Rest Mode (90° - 135°)
   Use a footrest to distribute leg pressure and avoid blood pooling.

• Material Differences: For fabric chairs, it is recommended that the recline angle be ≤130°; for leather chairs, it can be slightly larger, but long-term large-angle reclining will accelerate leather aging.

III. Precautions

1. Operational Safety
   Avoid sudden exertion when reclining to prevent the pneumatic rod from losing control due to sudden pressure changes; maintain body balance during adjustment to prevent falls.
2. Component Maintenance
   Regularly check whether the adjustment components (such as handles, knobs, and pneumatic rods) are loose, especially for mechanical knob-type chairs, as frequent use may cause part wear.
3. Material Protection
   Long-term large-angle reclining on leather seats can accelerate the formation of surface cracks. It is recommended to control the frequency of reclining; fabric seats need to be cleaned regularly to prevent dust from affecting the flexibility of the adjustment mechanism.

Operation Example: Sit on the chair and find the adjustment handle on the right side; pull the handle and slowly lean back until you reach the target angle, then release the handle to fix it; when returning to an upright position, pull the handle again, and the backrest will automatically bounce back. If it is a smart touch-type chair, you can directly set the angle through buttons or an app.