Study on the Relationship Between Seat Back Angle and Human Body Torso Angle

The purpose of this study is to preliminarily investigate the numerical relationship between the car seat backrest angle and the body angle under the condition of driving a car. In the early stages, the measurement of the car seat was carried out in several cities across the country for comfort evaluation purposes, including the measurement of the three-dimensional scan size of the human body and the measurement of the car’s attitude. Typical subjects were randomly selected in different regions and genders, after studying the correlation between the torso angle of the driving posture and the seat backrest angle. Different car types are also tested. It was found that value of the seat backrest angle could be estimated by the method of “torso angle + correction value”.