| 摘要 |
The wheelchair for stairs and obstacles consists of a power supply assembly (Fig. 1, item 8), i.e., internal combustion motor serving as battery charger, a battery, a drive wheel - belt pulley (Fig. 1 and 4, item 1 ), a tyre (or a full-rubber ring) of a greater diameter Fig. 1 and 4, item 1a), indented drive belts of a smaller diameter Fig. 2, 4 and 5, item 26), a foldable front wheel - pulley belt pendulum- support (Fig. 1, item 2, Fig. 3), pendulum elevating assembly (Fig. 1, items 4, 5 and 6), caster wheel elevator (Fig. 2, items 23, 24 and 25), legrest elevator (Fig. 2, item 18a), seat moving assembly to shift the centre of gravity in stair-climbing (Fig. 1 and 2, items 9, 9a, 9b and 9c), enabling the user to move comfortably indoors and on a flat surface with a partly elevated caterpillar drive pendulum (Fig. 1), to negotiate depressions and protrusions (Fig. 6), thresholds, curbs, etc. (Fig. 2), to move upstairs (Fig. 7) and downstairs (Fig. 8), thus having an unlimited radius of movement. The user can negotiate all the mentioned obstacles riding and looking forward, keeping the seat slant comfortable and safe. |
