2. Sitting width: generally greater than 380mm. The armchair is not less than 460mm. Sofas and other rest chairs are larger than 480mm, generally 520 560. b = human shoulder width + thickness of winter coat + activity margin.
3. Sitting depth: 400 440mm in the national standard, and 480 600mm for sofas and other resting chairs. The design is based on the 5th percentile value of sitting depth. t = seated thigh horizontal length - 60mm (gap).
4. Sitting surface and backrest inclination: The inclination angle of sitting surface (backrest) refers to the angle between the sitting surface (or backrest) and the horizontal plane. Generally, take the rest chair 19° 20°; 98° 112°, for the work chair, because the person sitting needs to lean forward when working, the inclination angle should not be too large, and 4° 6° can be taken; 95°~100°。
5. The height of the backrest. It is generally advisable on the lower edge of the scapula. There is a waist cushion at the waist, which is 250mm. The position of the lumbar varies depending on the angle of the backrest.
6. Armrest height: The height of the armrest refers to the distance from the upper edge of the armrest to the sitting surface, the main function is to support the weight of the arm, reduce the burden on the shoulder, and the height of the armrest is generally 200 300mm above the effective thickness of the cushion.
7. Chair cushion: When a person sits, about 75% of the weight of the human body is supported by the parts around the ischial tuberosity of about 25C, which will produce pressure fatigue and cause pain and numbness in the buttocks after sitting for a long time. If a cushion with moderate hardness and softness is added to the seat surface, the contact bearing area can be increased and the pressure can be distributed.
To sum up, the ergonomic chair is more suitable for the human body than the traditional office chair, the sitting feeling is more comfortable, and it is also more beneficial to our health!
Sihoo. Xihao, Chinese ergonomic chair expert, focusing on the ergonomic chair industry for 12 years, products are exported to more than 100 countries and regions, deeply loved by top 500 enterprises and more than 10 million family users, Xihao ergonomic chair has ranked first in Jingdong and Tmall sales dual platforms for 3 consecutive years, whether from the industry status or industry prospects, our Xihao is far ahead.