Office Chair Damage Inspection

The following steps can be taken to inspect damage to an office chair:

I. On-site Emergency and Safety Confirmation

1. Personnel Safety Check: Stand up slowly and confirm that there are no bumps or sprains on the body to avoid secondary injuries caused by sudden chair damage.
2. Isolate the Damaged Chair: Move the chair to a corner that does not obstruct passage and place a "Faulty - Do Not Use" sign to prevent others from misusing it and causing accidents.

II. Quick Diagnosis of Common Faults

1. Abnormal Lifting Function: If the lifting fails or the chair sinks slowly, it is mostly due to a fault in the gas rod or the internal regulating valve.
2. Stability Issues:
   • Left-right swaying or "falling off the chair": The gas rod is damaged, which is a high-risk signal and requires immediate discontinuation of use.
   • The chair leans backward when someone sits on it: Check whether the tray (chassis) connecting the seat to the gas rod is desoldered or cracked.
3. Structural Damage: Breakage of the five-star base, detachment or slippage of the wheels can usually be confirmed by visual inspection.
4. Abnormal Noise or Wheel Jamming:
   • Lack of oil in metal joints, loose screws, or worn rollers blocked by hair or foreign objects.
5. Tilting Issues:
   • Check the wheels: Turn the chair upside down, confirm whether each wheel foot is in contact with the ground, and observe whether the wheel feet are bent or broken (which may be caused by uneven weight distribution, manufacturing defects, or wear).
   • Check the ground: If the ground is uneven, the wheels may not all be in contact with the ground when not seated, and the chair will tilt to the lower side when seated.
   • Check the seat plate: If both the wheels and the ground are normal, further check whether the seat plate is damaged.

III. Simple Emergency Maintenance and Inspection

1. Loose Screws: Tighten the loose screws with tools.
2. Wheel Jamming: Remove the hair and thread wrapped around the wheels and spray an appropriate amount of lubricating oil.
3. Abnormal Noise Handling: Add lubricating oil to the moving joints to reduce friction.

IV. Further Inspection of Complex Issues

1. The Backrest Cannot Recline:
   • Check the regulating mechanism: Confirm that the regulating handle or button is in the "unlocked" state.
   • Check the alignment of the control lever and the pin hole: If the backrest is stuck, fully pull out the control lever, assist in pushing the backrest back to the upright position, and then reinsert it into the pin hole.
   • Cleaning and lubrication: Clean the dust on the reclining mechanism with a dry cloth or brush, spray a special lubricant on the moving joints, rotating shafts, and slide rails, and operate the reclining function several times repeatedly.
   • Diagnose mechanical faults: If the above methods are ineffective, check whether the springs, control tabs, hydraulic systems, or connecting parts are damaged, loose, or worn.