| 摘要 |
A wheelchair includes a frame, a seat and apparatus for moving the seat between lowered and raised positions, the apparatus comprising a translating mechanism having a first end and a second end. The translating mechanism is attached to the frame and the seat is attached to the second end of the translating mechanism, and the translating mechanism generates a translational movement of the seat that is forwards and upwards with respect to the frame. The apparatus further comprises assist means, wherein the said assist means generates a force component substantially parallel to the direction of translation of the said scat, to move the scat from the lowered to the raised position. The seat is a saddle seat and in the lowered position an occupant is in a seated position and in the raised position the occupant is in a mounted stance with a major part of said occupant's weight reacted through the seat, and wherein the translating mechanism comprises a four bar linkage, the scat and the frame being attached to respective ends of the four bar linkage. |
