| 摘要 |
A seat comprising a base mount (1) which supports an adjustable backrest (2) and a seat cushion (3) whose rear part is pivotally supported by the backrest (2) and whose forward part has a supportive part (31, 33; 12) which is displaceably carried by the base mount (1), wherein the arrangement is such that the bottom part of the backrest (2) and the seat cushion (3) are moved forwards relative to the base mount (1) as the backrest (2) is inclined rearwardly from an upright position. The backrest (2) has firmly connected thereto a frame structure (4) which extends in beneath the seat cushion (3); in that the frame structure (4) is displaceably carried by a support (5', 5"; 5, 6, 8, 9) mounted on the base mount (1) and has a guide (10) which coacts with the support (5', 5"; 5) and which in the upright position of the backrest (2) extends generally rearwards and upwards; and in that a supporting arrangement (23, 6, 7, 8, 13) connected to the base mount (1) supports the front supporting part (31, 33; 12) of the seat cushion (3) for movement along a predetermined movement path (23) and in that the guide (10) and the movement path (23) have extensions such that the height of the front edge of the seat cushion (3) above the floor will be held generally constant or will decrease as the backrest (2) is swung from its upright position to a rearwardly inclined position. |
