Disassembly of Wooden Office Chairs

The disassembly of wooden office chairs requires combining structural characteristics with standardized tool operations. The specific steps are as follows:

I. Tool Preparation

1. Basic Tools: Cross/flat-head screwdrivers (for different screw types), adjustable wrenches (for metal fasteners), rubber mallets (to avoid damaging wood surfaces), pry bars or plastic pry tools (to protect paint when separating clips or mortise-and-tenon joints).
2. Auxiliary Tools: Lubricating oil (for rusty screws), sandpaper (to sand overly tight tenons), woodworking chisels (to separate stubborn mortise-and-tenon joints).
3. Safety Gear: Cut-resistant gloves (to prevent wood splinter or metal cuts), safety goggles (to protect against flying debris).

II. Structural Identification and Disassembly Sequence

1. Invert and Inspect: Turn the chair upside down to examine the bottom connection points. Common fastening methods for wooden office chairs include:
   • Screw Fixing: Visible screws are directly accessible, while hidden screws may be located beneath decorative carvings or under the seat.
   • Metal Fasteners: Such as spring clips or bolts, which require an adjustable wrench or pry bar for separation.
   • Mortise-and-Tenon Joints: Traditional woodworking connections that require tapping or prying for separation.
2. Disassemble from Bottom to Top:
   • Base Separation:
     • Screw fixing: Use the corresponding screwdriver to turn counterclockwise and remove, noting that hidden screws may require removal of decorative covers first.
     • Mortise-and-tenon joint: Gently tap around the tenon with a rubber mallet, or slowly insert a plastic pry tool along the seam to avoid cracking the wood.
   • Armrest Removal:
     • Screw fixing: Check the bottom or side connection points, unscrew, and then separate the armrest.
     • Clip fixing: Use a pry bar to gently pry along the seam between the armrest and chair body, controlling the force to prevent breakage.
   • Backrest Removal:
     • Screw fixing: Locate the connection point between the seat and backrest, unscrew, and then separate.
     • Clip or hook fixing: Use a pry bar to press down on the release mechanism or gently push the hook out of the slot.

III. Key Precautions

1. Component Storage: Store removed screws, wooden tenons, and other small parts in sealed bags, categorized and labeled with the source component (e.g., "base screws", "armrest clips") to avoid loss or confusion.
2. Safe Operation:
   • Wear gloves to prevent wood splinter or metal burr cuts.
   • Use a rubber mallet instead of a metal hammer to avoid damaging the paint or wood.
3. Mortise-and-Tenon Joint Handling: If the tenon is too tight, lightly sand the contact surface with sandpaper or use a woodworking chisel to assist in separation. Do not forcefully pry to avoid cracking the wood.

IV. Special Case Handling

If the chair has a gas lift (as found in some adjustable wooden office chairs), first separate the gas lift from the seat cushion:

1. Turn the chair upside down and evenly tap around the bottom steel ring of the base with a rubber mallet to loosen the internal clips.
2. Note during separation: The gas lift is a high-pressure component. Non-professionals are advised to avoid disassembly to prevent accidental ejection or damage.

Reference Process: Observe the structure → Prepare tools → Disassemble layer by layer starting from the base → Categorize and store components → Safely reassemble. If unfamiliar with the structure, take photos to record connection point locations before disassembly, or refer to professional team operation specifications (e.g., numbering components) to reduce the risk of damage.