VDT Office Chair

The VDT office chair is an office furniture item designed with full consideration of ergonomic factors, aiming to adapt to the physiological and psychological characteristics, work requirements, and environmental conditions of office workers.

Design Factors

1. Worker-Related Factors: The functional dimensions of the office chair, such as seat height, depth, and width, are determined by the human body's scale and range of limb movements to ensure a comfortable sitting posture. The biomechanical characteristics of the human body influence work postures, so the design of the chair back inclination angle and armrest height must conform to the body's natural posture to reduce muscle fatigue. The sensory characteristics of the human body are related to the layout of VDT work positions, and the design of the office chair should consider the distance and angle from the monitor to reduce visual fatigue.
2. Work-Related Factors: Different office work contents and requirements necessitate that the configuration and placement of computer units should facilitate reducing work fatigue and improving efficiency. The adjustable functions of the office chair should meet the needs of different work scenarios.

Specific Product Example

Take the Sihoo Vito M90 ergonomic chair as an example. Its lumbar support features a floating wing lumbar support with left and right partitions, conforming to the distribution of the lumbar muscle groups, assisting in straightening the lumbar spine. The four-spring adaptive system can automatically adjust to a comfortable fit, reducing lumbar pressure during prolonged sitting. In terms of angle adjustment, it offers a variable angle adjustment from 90 to 105 degrees, combined with a space-age chassis seat-back linkage technology that makes the seat cushion and chair back move in sync with the user, providing effective body support. The armrest adjustment includes a 6D armrest with six adjustment positions to meet the needs of different postures. The seat depth design is extended to better accommodate users of different body sizes.

Dimension Inspection

Inspection items include dimensions of the seat, backrest, armrests, etc., and some involve dimensions of the chair legs and the rotational diameter of the seat. Inspection equipment includes length and angle measurement tools such as height gauges and depth gauges, and non-contact three-dimensional scanners may be used for complex surface dimensions. Inspection standards follow domestic and international technical standards and specifications, with the core domestic standard being GB/T39223.3 - 2020 'Ergonomic Requirements for Healthy Homes - Part 3: Office Desks and Chairs'.

Ergonomic Inspection

Inspection items cover dimensions and angles of the seat, backrest, and armrests, the adjustment range of the lumbar support, seat stability, the fit dimensions between the desk and chair, and the operating force and durability of the adjustment mechanisms. Inspection equipment includes three-dimensional measurement platforms and pressure distribution testing systems. The inspection process involves calibrating the instruments after adjusting the sample state and then conducting dimension and angle measurements, stability tests, and other steps in sequence.