Wheelchair and a method for producing said wheelchair

摘要

A collapsible wheelchair (CW) may be relatively small and lightweight and may be adapted to be easily collapsed/folded into a callable faint, allowing for easy storage, transport and use. The CW may be adapted to be collapsed/folded and expanded/unfolded in a series of simple steps, executable with one hand, by a person in a seated position, allowing for independent use even by a user with limited physical capabilities. The CW may have a relatively small width, allowing for access into constricted spaces. The rear and interior space between its large wheels may be unobstructed, leaving an unobstructed inner width, allowing the CW to be maneuvered in reverse over standing objects, such as a standard toilet. The seat of the CW may be equipped with a trap door, to allow the use of a toilet while seated on the CW. The rim may be beneath the seat for cleanliness.

主权项

1. A wheelchair comprising:
a chassis having side bars; a pair of driving wheels connected to the side bars of said chassis such that, when the wheelchair is in a non-collapsed position and configured to allow a user to sit on a seat of said wheelchair: (1) the center of gravity of said wheelchair is located at a point between the hubs of said driving wheels or behind said point; and (2) the center of a minimal enclosing circle of said wheelchair is located substantially between said driving wheels, the driving wheels contacting the floor when the wheelchair moves along the floor, wherein each of the driving wheels is on a side of the chassis and does not extend in front of or behind the chassis; a pair of small rear wheels rearward of the pair of driving wheels and in contact with the floor when the wheelchair is propelled along the floor; wherein said side bars include at least one lower bar and at least one curved bar having a curve matching the contour of the circumference of the driving wheels, and wherein each driving wheel includes hub at the center thereof for connecting the driving wheels to the lower bars and further includes an outer rim defined at the circumference of the driving wheel, said outer rim contacts the curved bar in multiple contact points providing the driving wheel with lateral support from the curved bar and a tire that contacts the floor when the wheelchair moves along the floor, the tire positioned beneath the seat when the wheelchair moves along the floor.