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A wheelchair comprises a backrest, a base frame and a rod assembly connecting the backrest with the base frame. The rod assembly includes at both sides of the backrest a support rod pivotably coupled with the base frame for adjusting the angle of inclination of the backrest. A locking mechanism is p

A wheelchair comprises a backrest, a base frame and a rod assembly connecting the backrest with the base frame. The rod assembly includes at both sides of the backrest a support rod pivotably coupled with the base frame for adjusting the angle of inclination of the backrest. A locking mechanism is provided for locking the backrest in a desired position. For each support rod a pair of tubes is provided having an inner tube telescopically slidable in an outer tube. The free ends of the pair of tubes are rotatably connected with upper and lower supports, respectively, which supports are connected fixedly and rotatably, respectively, with the corresponding support rod. A gas spring is mounted in each outer tube, which gas spring is connected with the inner tube at one side and with the outer tube at the other side. The actuating pin of the gas spring is operable through an actuating lever pivotably supported at its free end in the outer tube.

대표청구항 ▼

A wheelchair comprising a backrest; a base frame; a rod assembly connecting said backrest with said base frame, said rod assembly including at both sides of said backrest a support rod pivotably coupled with said base frame for adjusting the angle of inclination of said backrest, upper and lower sup

A wheelchair comprising a backrest; a base frame; a rod assembly connecting said backrest with said base frame, said rod assembly including at both sides of said backrest a support rod pivotably coupled with said base frame for adjusting the angle of inclination of said backrest, upper and lower supports for each said support rod, and a locking means for locking said backrest in a desired position; wherein said upper and lower supports are fixedly and rotatably connected respectively with the corresponding support rod; wherein said locking means further includes for each said support rod both a pair of tubes and a gas spring, each said pair of tubes having an inner tube telescopically slidable in an outer tube; each said inner tube having a first and second end, said inner tube first end being rotatably connected with said upper support of the corresponding support rod; each said outer tube having a first and second end, said outer tube first end being rotatably connected with said lower support of the corresponding support rod; each said gas spring having two ends and being mounted in each said outer tube, one end of said gas spring being connected to said inner tube second end and the other end of said gas spring being connected to said outer tube; and wherein each said gas spring further includes an actuating pin, each said actuating pin being operable through an actuating lever pivotably supported in said outer tube.