| 摘要 |
<p>PROBLEM TO BE SOLVED: To move a skin material in accordance with inflation and contraction of a fluid bag to increase a variable amount of a cushion length by the fluid bag by moving the skin material covering a cushion together with movement accompanying the inflation and the contraction of the fluid bag, in a cushion length-variable seat making the cushion length variable by the inflation and the contraction of the fluid bag such as an air bag.SOLUTION: A cushion length-variable seat is provided with a first fluid bag 21 such that the first fluid bag 21 inflates and contracts according to a fluid amount injected thereinto to make a cushion length variable, and includes a second fluid bag 22 supporting the first fluid bag 21 such that it is prevented from descending downward when a length of the first fluid bag 21 is increased such that the cushion length becomes longer. A front end part of a first skin material 30 covering the outside of a seat cushion 3 is length-adjustably fixed to a front pipe 13 of a cushion frame 10 below the seat cushion 3 while winding in the first fluid bag 21 from above, and the first skin material 30 is moved in accordance with movement of the inflation and the contraction of the first fluid bag 21.</p> |
