| 摘要 |
<p>A seat device having a cushion (20) supported movable up and down to damp vibration, characterized in that the seated portion of the cushion (20) is divided to front (30), center (40) and rear (50) parts which are connected bendably with one another, that one of the front and rear parts of the seated portion is pivoted on a fixed member while the other is swingably and slidably supported by a fixed member, that swinging arms (34) are projected downward from the front (30) and rear parts (50) of the seated portion, and that a cushion spring (27) for urging the center part (40) of the seated portion upward is stretched between the front ends of the swinging arms (34).</p> |
