Before choosing a suitable chair surface material, we first need to study the requirements of human body temperature and humidity comfort. When the ambient temperature is neutral, the human body will feel comfortable.
The environment maintains heat balance, neither sweating nor too cold. When this balance is broken, the human body will generate more heat through chills, or expel the body in the form of evaporation through sweating heat.
In addition, therefore, whether the body temperature can be properly maintained or the heat can be dissipated in time has become an important measure of the chair surface material.
The spine of a normal human body has three physiological curvatures. They do not grow in a straight line due to physiological needs. The thoracic spine is convex, the cervical and lumbar spine is convex forward. From the side, the spine is like two S
Connection. Due to this physiological characteristic, the waist and back cannot be placed on the same plane. Therefore, if you want to achieve a comfortable sitting position, the design of the chair back should conform to the natural spine curve. Therefore, a properly designed work chair should have the following two supporting points for the human back:
1. There is an adjustable curved surface on the upper back to support the kyphotic thoracic spine.
2. There is an adjustable lumbar pad at the back waist to support the lordotic lumbar spine.
3. Adjustable neck brace. For users who need to recline and relax their head and neck frequently, the height and angle of the neck brace determine the fatigue of your cervical spine. A reasonable neck brace height should be adjusted to the neck
The third to the seventh section of the spine in order to get the necessary support for the cervical spine and effectively relieve the fatigue of the cervical spine. There is an adjustable neck pillow on the head and neck to support the lordotic cervical spine, which is essential to relieve fatigue.