| 摘要 |
A foldable seat comprises a plurality of pairs of hinged plates (8) which are coupled together on a hinge axis (3), the plates (8) being pivotable about the hinge axis (3) between two extreme positions, in a first Fig 3, folded one of which the plates (8) lie substantially upright and the hinge axis (3) lies above the normal seat level, and in a second of which the hinged plates are all horizontal, the disposition of the hinge axis (3) relative to the plates (8) and the dimensions of the plates being such that the plates can not subtend between them an opening angle which is greater than 180 DEG , whereby the plane of the seat is prevented from dipping below the horizontal. Fig 8 illustrates a standard collapsible wheelchair fitted with the foldable seat. <IMAGE> |
