| 摘要 |
Disclosed is a seat for reducing the looseness of a seated posture in the entirety of the body. In connection with such a load peak position (P) of the pelvis (26A) of a seated occupant (26) as has been detected by a pelvis displacement sensor (24) disposed in the seat cushion (12) of a seat (10), a control device (27) compares an initial peak position (P1) and a peak position (P2) after displacement. At the same time, the control device (27) detects a shoulder blade position (26C) from that load distribution of the chest (26B) of the seated occupant (26), which has been detected by a chest displacement detecting sensor (28) disposed in the upper portion of a seat back (16), and compares an initial position (S1) detected in advance and an after-displacement position (S2). Next, the control device (27) moves the seating position (22) of the seat cushion (12) in a direction to eliminate the dislocation between the initial peak position (P1) and the after-displacement peak position (P2), and moves the upper portion (16A) of the seat back (16) in a direction to eliminate the dislocation between the initial position (S1) and the after-displacement position (S2) of the shoulder blade of the seated occupant (26). |
