| 摘要 |
A tilt mechanism portion 7 is connected to an front downward-extending portion 20a of a side frame 20 (cushion side fame) of a seat cushion 2 so as to move vertically the seat cushion 2 . A rear downward-extending portion 20b of the cushion side frame 20 is supported at a support pin 37 of a base side frame 30 . Thereby, the rear end of the seat cushion 2 changes little longitudinally despite the vertical movement (tilt) of the front portion of the seat cushion 2 . Accordingly, any conformability deterioration that may be caused by a large forward movement of the seat cushion 2 at a seat back taking a large reclining position can be prevented properly.
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