The invention relates to scooters, in particular to a manual four-wheel multifunctional vehicle special for old persons. An article table (3) is arranged on a reversing mechanism (28). A reversing steering plate (1) drives a driving post (2) to drive a large transmission gear (41) driving a small transmission gear (42) so as to drive a steering wheel (8) to rotate. The seat is a rotatable seat (30) rotating through the steering plate. The manual four-wheel multifunctional vehicle has the advantages that the problem that an old person finds difficult to get on and off a vehicle can be solved; the reserving mechanism can be operated conveniently and simply by one hand, and steering is flexible and can be performed through small amplitude only; the article table provides the position for a user to place commonly-used articles, fatigue of the user can be alleviated in the process of arm suspending during steering, and stability in the rotating process can be improved; the effect of exercising arms can be achieved by driving a handle in a swinging manner; the angle of the backrest of the rotatable seat can be adjusted according to usage.

Manual four-wheel multifunctional vehicle special for old persons

The utility model relates to a wheelchair stair climbing power mechanism, which provides power source for smoothly climbing stairs through a wheelchair and belongs to wheelchair technology field. The power mechanism comprises a left and a right set of manual mechanisms and a low speed shaft that connects the two; each set of manual mechanism comprises a handwheel, a chair rack support plate, a high speed gearshaft, two low speed gears and a bearing, and the bearing is arranged on the support plate, the low speed gears are arranged on the two ends of the low speed shaft; the handwheel is engaged with the low speed gears on the low speed shaft through the support bearing and the high speed gearshaft. Te two ends of the low speed shaft are equipped with an active sprocket wheel 8 and a chain 9 to output power, and the middle is equipped with a combine-apart converting sleeve that can slide along the low speed shaft to realize switch between independence and one-piece of the two sides of the power mechanism. In the utility model, according to design requirement of human engineering, through combination of linkage between the handwheel and gear, sufficient power for ground move and stair climbing is provided, and arm force needed in the process of driving a wheelchair to walk is reduced.

Xiaobo Liu

Papers

A wheelchair stair climbing power mechanism