| 摘要 |
A wheelchair comprises a backrest (5), a base frame (1) and a rod assembly (6) connecting the backrest (5) with the base frame (1). The rod assembly (6) includes at both sides of the backrest (5) a support rod (8) pivotably coupled with the base frame (1) for adjusting the angle of inclination of the backrest (5). A locking mechanism is provided for locking the backrest (5) in a desired position. For each support rod (8) a pair of tubes (9,10) is provided having an inner tube (9) telescopically slidable in an outer tube (10). The free ends of the pair of tubes (9,10) are rotatably connected with upper and lower supports (11,12), respectively, which supports (11,12) are connected fixedly and rotatably, respectively, with the corresponding support rod (8). A gas spring (16) is mounted in each outer tube (10), which gas spring (16) is connected with the inner tube (9) at one side and with the outer tube (10) at the other side. The actuating pin (20) of the gas spring (16) is operable through an actuating lever (21) pivotably supported at its free end in the outer tube (10). <IMAGE> |
