| 摘要 |
PURPOSE: To keep safety in a wheelchair by forming both ends of each of treadboards and the central part thereof into an even state while folding one slope along a sloping surface, and forming both ends and central part into two kinds of stairs having different uneven-steps. CONSTITUTION: While folding one slope along a sloping surface, a stair is so formed that both ends 4 of each of treadboards and the central part 5 thereof are in an even state. Parallel guides 2 are mounted to the central part 5 and sloping surface of both ends to prevent the slippage of a wheelchair, and turn- guides 3 facilitating the turning of the wheel chair are mounted to both ends 4. Accordingly, the operation of the wheelchair is facilitated to make it possible to form the slope in consideration of safety and availability. |
