| 摘要 |
A wheelchair frame includes left and right frame members (9, 10), each including at least a first leg (11, 12) for supporting a seat, arranged on opposite sides of a central axis aligned with a direction of displacement (d) of the wheelchair, in use. At least one cross- brace (19) is connected to the first legs (11, 12) of the left and right frame members (9, 10) at its ends, and has a non-circular cross-section along at least a section (34) between the ends. Alternatively, the wheelchair frame further includes left and right second frame members (29, 30), pivotably connected to the left and right frame members (9,10) and arrestable in a position in which they are oriented in a direction predominantly parallel to the first legs (11, 12) of the left and right frame members (9, 10). In that case, at least one cross-brace (33) is connected to the left and right second frame members (29, 30) at its ends, and has a non-circular cross-section along at least a section (37) between its end.
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