| 摘要 |
PROBLEM TO BE SOLVED: To provide a cushion for keeping an upright pelvis. SOLUTION: The cushion 10 includes: a left air chamber 11; a right air chamber 12; and a communication passage 13. The left air chamber 11 and the right air chamber 12 are internally filled with air. The communication passage 13 performs communication between the left air chamber 11 and the right air chamber 12, where the air to fill the left air chamber 11 and the right air chamber 12 is movable between the chambers. The maximum widths W11b and W12b in back of a median line X, which passes the center of a front and rear direction and extends in right and left directions, in the left and right air chambers 11 and 12, are larger than the maximum widths W11a and W12a in front of the median line X. The left and right air chambers 11 and 12 include: upper sheets, lower sheets; and flexible connection parts 15 and 16 connecting the upper and lower sheets. The connection parts 15 and 16 are arranged to position the centers in the front part of the median line X. COPYRIGHT: (C)2010,JPO&INPIT
|
