초록 ▼

A wheelchair has two foldable side frames, link members which cross one another and are pivotable about a common horizontal axis so as to fold the side frames, front wheels and rear wheels connected with the side frames, a back rest with upwardly extending back supporting members, a seat with seat s

A wheelchair has two foldable side frames, link members which cross one another and are pivotable about a common horizontal axis so as to fold the side frames, front wheels and rear wheels connected with the side frames, a back rest with upwardly extending back supporting members, a seat with seat supporting members which are movable upwardly and downwardly in dependence upon a folding movement, and a foot support with foot support carrying arms, wherein each side frame is provided with guide receivers for the seat supporting members, and with supports for the link members, and wherein a rear wheel axle block and the front support carrying arms are formed as a one-piece element of synthetic plastic material. Such side frames have a lower weight, but are stable nevertheless, and also result in an improved handling of the wheelchair.

대표청구항 ▼

A wheelchair, comprising in combination two side frames; link members, connected between said side frames, and crossing one another and pivotable about a common horizontal axis so as to fold said side frames in a folding movement; front and rear wheels rotatably arranged on each of said side frames;

A wheelchair, comprising in combination two side frames; link members, connected between said side frames, and crossing one another and pivotable about a common horizontal axis so as to fold said side frames in a folding movement; front and rear wheels rotatably arranged on each of said side frames; a back rest having upwardly extending back rest supporting members connected to said side frames; a seat having seat supporting members which are attached to respective link members and movable upwardly and downwardly in dependence on the folding movement of said side frames; a foot support; each of said side frames being provided with guide receiving means for said seat supporting members, support means for said link members, a rear wheel axle block, and carrying arms for said foot support, each of said side frames together with said guide receiving means and said link member support means being formed as a one-piece element of synthetic plastic material, wherein said front wheels are steerable, said rear wheels being of a greater size than said front wheels and being manually drivable, wherein each of said side frames has a rectangular contour, said guide receiving means of each of said frame including an upright central guiding member and an upright rear guiding member, each of said side frames also having an upright front supporting member, two upper spacers arranged to hold said front supporting member and said guiding members at a distance from one another, a lower spacer extending between said front supporting member and said central guiding member, a bearing bush provided at a lower end of said central guiding member, and a support member provided at a lower end of said rear guiding member and extending coaxially to said bearing bush, and wherein said front supporting member is shorter than each of said guiding members, said lower spacer extending above said bearing bush and being connected with a lower end of said front supporting member.