Homemade Adjustable Office Chair

You can refer to the following two cases for the design and production of a homemade adjustable office chair:

Case 1: Manually Adjustable Lifting Chair This case aims to match a DIY desk, with overall dimensions of 33cm in width and a height adjustable from 60 to 70cm. The following materials are required for production:

1. Curved Seat Panel: Choose a walnut-colored panel and reserve a hole spacing of 10cm×10cm for connection with subsequent components.
2. Lifting Chair Leg Frame with Wheels: The leg frame has a fixed height of 38cm and a radius of 33cm. The wheels should be quiet and wear-resistant to ensure smooth movement without damaging the floor.
3. Lifting Chair Rod: Electroplated in color, with an adjustable height range of 33 to 49cm. It needs to match the leg frame and seat panel to ensure stability during adjustment.
4. Round Tray with Gas Lift: Silver in appearance, with hole spacing consistent with the seat panel (10cm×10cm). The gas lift should be selected based on a model with a load-bearing capacity that matches human weight to ensure safety.
5. M6*12 Screws: Four are required to fix the seat panel to the round tray. High-strength materials should be chosen to prevent loosening. Production Points:

• Ensure that the hole positions of all components are aligned during assembly, and the screws are tightened properly to prevent wobbling during adjustment.
• Check the airtightness of the gas lift before installation to prevent air leakage and failure of height adjustment.
• The curve of the seat panel should conform to ergonomics to avoid fatigue from prolonged use.

Case 2: Electrically Adjustable Lifting Chair This case aims to solve the difficulty of the elderly getting up, using square tubes as the main structure and achieving height adjustment through an electric device. The following points should be noted during production:

1. Square Tube Selection: Choose an appropriate wall thickness based on the user's weight (recommended ≥2mm), and the length should cover the adjustment range from the lowest to the highest (e.g., 50 to 80cm).
2. Electric Device: Options include linear actuators or motor drives, equipped with a remote control or button for operation. The adjustment speed should be gentle (recommended ≤10mm/s).
3. Seat Design: Add a backrest and armrests to improve comfort. The surface should be covered with soft materials (e.g., sponge + leather) to avoid injury from hard materials.
4. Safety Design: Add limit switches to prevent height adjustment beyond the range. Add an anti-tipping structure at the bottom (e.g., a widened base or counterweights). Production Points:

• Choose a low-noise model for the electric device to avoid affecting the user experience.
• Add overload protection to the circuit to prevent damage to the motor or safety hazards caused by excessive current.
• Regularly check the connection wires of the electric device to prevent short circuits due to aging.