Office Chair Fixed Angle

The fixed backrest angle of an office chair is mainly achieved through the locking recline function, rather than traditional 'fixed angle' components. Here are the common operating methods and troubleshooting steps:

I. Common Locking Methods

1. Handle/Lever Locking

   • Location: The adjustment handle is usually located on the right side under the seat, and some models may integrate it on the left side or under the armrest.
   • Operation: After sitting firmly, pull the handle, lean back slowly to the target angle, release the handle, and confirm that you hear a 'click' sound (indicating that the metal catch has engaged). At this point, the backrest angle is locked.
   • Reset: Pull the handle again, lean forward or sit upright, and the backrest will automatically spring back to its initial position under the action of the spring.

2. Knob Adjustment System

   • Location: The knob is mostly located at the center of the bottom of the seat, near the gas lift (support post), and some models may hide it under fabric or plastic cover plates.
   • Operation: Rotating the knob can adjust the recline resistance or angle range. If you need to lock the angle, follow the instructions in the manual (such as 'pull out the knob to adjust the angle and then press it to lock'). Some models require both 'specific angle + knob locking' conditions to be met.

3. Push-Pull Button Type

   • Location: The button may be set independently on the side of the seat or integrated next to the handle.
   • Operation: Pull the button outward to unlock the recline function, adjust to the ideal angle, and then press the button inward. You will hear a 'click' sound, indicating that the locking is complete.

II. Troubleshooting for Locking Failure

If the backrest cannot be locked or automatically springs back, check the following steps:

1. Check the Screws at the Connections:

   • Focus on checking whether the screws at the connections between the bottom of the seat and the base, and between the armrest and the seat are loose. Use a screwdriver to tighten them.
   • If the chair has been used for a long time, regularly (every 6-12 months) check the tightness of the screws to avoid loosening due to vibration.

2. Confirm the Status of the Locking Components:

   • Observe whether the handle/lever has fully returned to its position. If not, the catch may not engage.
   • Check whether the metal catch has foreign objects (such as dust or debris) stuck in it or is deformed. You can use a cotton swab to clean the gaps in the catch or contact after-sales service to replace the component.

3. Rule Out Design Limitations:

   • Some low-priced office chairs may only support 'stepless adjustment' (i.e., the recline resistance can be adjusted, but the angle cannot be locked). Refer to the product manual to confirm the functions.

Note: Traditional 'fixed angle' hardware (such as corner braces) is usually used for structural reinforcement of furniture, rather than the recline function of office chairs. If you need to strengthen the stability of the chair, you can refer to general furniture methods (such as using three-sided corner braces to connect the chair legs and the base), but you need to adjust the installation method according to the material (such as metal/plastic) and design of the chair.