| 摘要 |
The seat has sitting and lumbar regions. It is constructed with hollow, flexible-walled cavities which are pressurised by a control system and pressure sensors in each cavity. The more highly loaded areas have a greater number of cavities. The seat (1) and lower region (2) of the backrest are formed from hollow chambers (3,3',3",3''') of elastic material which can be pressurised to suit by the user. In the area of the thighs (4,4') are five cavities in line. At the base of the spine (5) is an additional cavity and in the buttocks area (6) are nine cavities arranged in a square. At each side (7,7') three cavities are in line. In the lumbar region (2) of the backrest, five cavities (3") are arranged in line with an additional cavity (3'''). Each cavity has a pressure sensor (8,8',8",8''') and is connected through an inlet valve (9) to a pressure source (12) and an exhaust valve (14). A control system (11) ensures constant pressure in each cavity. |
