METHOD FOR ADAPTING SIDE SUPPORT OF SEATER ON VEHICULAR SEAT TO TRAVELLING STATE AND DRIVING STYLE, AND VEHICULAR SEAT THEREFOR

PROBLEM TO BE SOLVED: To realize side support accompanied by favourable seating comfortability in accordance with a travelling state and a driving style by automatically and gradually adapting a vehicular seat to lateral acceleration felt by a driver in accordance with the travelling state in consideration of travelling speed at the time of generating a controlled variable for one side support. SOLUTION: Instantaneous lateral acceleration be wording on a vehicle seat 10 is measured or computed from the number of rotation of a wheel, a controlled variable is decided by weighting it by instantaneous travelling speed of an automobile and pneumatic pressure is supplied to air cushions 14, 16 or 15, 17 on the outside of a curved road from a pneumatic device 18 at the time of travelling on the curved road. Additionally, an additional controlled variable is induced from a classification result of a driving style of a driver by a control device 19 and superimposed to the controlled variable, and the pneumatic device 18 supplies basic pressure to the four air cushions 14-17 in accordance with the additional controlled variable. This basic pressure is not changed in the case when the driving style is maintained. Air pressure to be decided by the controlled variable is superimposed to the air cushion pair on the outside of the curved road to the basic pressure at the time of travelling on the curved road.