| 摘要 |
PROBLEM TO BE SOLVED: To provide a sitting part structure allowing a load on the knee of a user to be decreased and user-friendly. SOLUTION: The sitting part structure allows a posture of a seat (4) to be changed to a sitting posture that the seat (4) is brought down flat and to a standing posture that the seat (4) is raised up to tilt increasingly high from the front to the back. In the posture change movement, the front end of the seat (4) in the standing posture is made to be higher than that in the sitting posture. The seat (4) is moved and pivoted on a rotational center (virtual point 15) located in a position forward from the front end of the seat (4) and with the same height as the sitting face of the seat (4) or above the face. The posture of the seat (4) can be changed along a pair of right and left guide rails (17 and 17) which are formed into an arch with a specified radius from the center (the point 15) respectively. COPYRIGHT: (C)2011,JPO&INPIT
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