초록 ▼

A wheelchair having a lifting device wherein the seat and the footrest are independent from each other and are mounted on the top ends of two deformable quadrilaterals extending upwards from the chassis and sharing a common moving portion, and wherein the raising and lowering control devices compris

A wheelchair having a lifting device wherein the seat and the footrest are independent from each other and are mounted on the top ends of two deformable quadrilaterals extending upwards from the chassis and sharing a common moving portion, and wherein the raising and lowering control devices comprise a drive member interposed between the chassis and one of the moving members of one of the quadrilaterals, and suitable for controlling the displacement of said quadrilaterals between a stable folded state and a stable unfolded state.

대표청구항 ▼

[ I claim:] [1.] A lift device mounted to a wheelchair including a chassis extending longitudinally and transversely relative to the wheelchair, wheels carried by the chassis defining a support polygon, the chassis also supporting hinged structures including at least a seat, a leg piece carrying a f

[ I claim:] [1.] A lift device mounted to a wheelchair including a chassis extending longitudinally and transversely relative to the wheelchair, wheels carried by the chassis defining a support polygon, the chassis also supporting hinged structures including at least a seat, a leg piece carrying a foot rest and a back rest, said seat, leg piece and back rest each being movable between a folded sitting position and an unfolded standing position, wherein the lift device comprises:a first quadrilateral device comprising a first pair of linkages having opposed ends extending between the chassis and the seat, each linkage pivotally connected at a first end to the seat and at a second end to the chassis, the connections between said first ends and the seat and between said second ends and the chassis being longitudinally spaced apart along the seat and chassis, respectively;a second quadrilateral device comprising a second pair of linkages each having opposed ends connected respectively to the leg piece at first ends thereof and to the chassis at second ends thereof, said connections between said first ends and the leg piece and between the second ends and the chassis being longitudinally spaced apart along the leg piece and chassis, respectively;said first and second quadrilateral devices sharing a common linkage and said leg piece being supported by the second quadrilateral device for motion that is independent of the motion of the seat;a device for moving at least one linkage of the quadrilateral devices pivotally about an end of the one linkage connected to the chassis to move the quadrilateral devices, the seat and the leg piece simultaneously between folded and unfolded positions relative to the chassis;said seat and foot rest at said unfolded position being located in general upright alignment within the support polygon.