| 摘要 |
A chair seat cushion, its use, and a chair provided with such a cushion. The cusion is intended to be placed on the front part of a chair seat, wherein the cushion, which is essentially non-compressible when subjected to load, has a length (L1) which is substantially smaller than the effective length (L0) of the seat (21), so as to enable the rear edge (4) of the cushion bo be moved to a position essentially immediately beneath the hip joints of a seated person, at the same time as the front edge (3) of the cushion will be located essentially inwardly of the front edge of the seat (21). The seat cushion has an effective thickness (t2) of from 25-45 mm between the generally flat bottom surface of the cushion and those parts (2) of the upper side of the cushion that support the thighs of the seated person. A chair includes a seat (40) and a backrest (22), wherein the seat includes the seat cushion as a front (11) and a rear part (12). The front part and the rear part are movable vertically in relation to one another between a first position (32) in which the parts (11, 12) lie generally in a common plane (31, 32) and each support a respective substantial part of the weight of the seated person, and a second position (12') in which the front part (11) lies on a much higher level (31) than the rear part (12') and the front part (11) supports a greater part of the weight of the seated person.
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