| 摘要 |
The seat includes a backrest ( 2 ) installed so as to pivot on the seat pan ( 1 ) and arranged to be placed in a table position where the rear wall of the backrest is maintained in horizontal position, more or less parallel to a seat support frame ( 3 ) arranged to be attached to the floor ( 5 ) of the vehicle, the seat pan ( 1 ) being itself installed on the said frame in a tiltable manner, so that it can be positioned, with a sufficient tilt angle, the rear of the seat pan being raised, so that the backrest tilted on the seat pan can be placed in the said table position. The seat pan ( 1 ) is attached to the frame ( 3 ) by a set of links ( 6, 7 ) forming, with the frame and the seat pan, a deformable quadrilateral (ABCD) such that a pivoting of the links leads to the deformation of the said quadrilateral to place the seat pan in the said sufficient tilt angle position, and locking means ( 10 ) are provided to lock the pivoting of the links in relation to the seat pan or the frame.
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