Office chair engineering (ergonomics) is a discipline that studies how to optimize the interaction between people and the work environment through chair design, aiming to reduce the harm to the body caused by sitting for long periods of time and improve comfort and work efficiency. The following are its core points: 1. Design principles
· Fit the human body curve: The chair back needs to support the natural S-shaped curve of the spine, and provide additional support for the waist to avoid hanging in the air.
· Adjustability: Height, depth, backrest angle, armrest position, etc. are adjustable to adapt to different body types and sitting postures.
· Even pressure distribution: The seat surface material (such as mesh) needs to be breathable and soft to disperse pressure and reduce local oppression.
· Dynamic support: Some high-end chairs use intelligent systems to respond to body movements in real time, such as dynamically fitting the spine. 2. Key dimensions and parameters
· Seat height: 400-450mm is appropriate. Make sure your feet are flat on the ground and your calves are perpendicular to the ground.
· Seat depth: 38-42cm, so that the back of the thigh touches the back of the chair and there is space in front of the knee.
· Backrest angle: 110°-120°, close to the natural spine shape, reducing waist pressure.
Injection moulds of plastic office chair components.
Armrest height: The surface is 20-25cm away from the seat surface, the front end is slightly higher, and the supporting arms hang naturally. 3. Material selection
· Seat surface: Mesh has good breathability and can disperse pressure; sponge or leather should be moderately soft and hard.
· Chair back: elastic material or segmented design to fit the curve of the back.
· Frame: made of aluminum alloy or steel, strong and stable, with strong load-bearing capacity. 4. Functional innovation
· Auto-tilt system: Automatically adjusts tilt angle based on body weight and posture, like Herman Miller Cosm.
· Dynamic lumbar support: rises and falls with body movements to continuously support the waist, such as Libernovo Omni.
· Multi-dimensional adjustable armrests: height, angle, and front and rear positions are adjustable to adapt to different tasks.
Shopping advice
· Trial sitting experience: Feel the support, comfort and ease of adjustment for yourself.
· Pay attention to certification: products that meet international ergonomic standards are more reliable.
· Combined use scenarios: For high-frequency use, you need to choose a chair with strong support and good durability. Through scientific design, office chair engineering not only improves comfort, but also prevents occupational diseases such as low back pain and cervical spine problems. It is an important health guarantee in the modern office environment.
Plastic injection moulds manufacturer located in Taizhou, China.
