초록 ▼

The flexible contour wheelchair backrest comprises two side posts, and a flexible backrest body extending between the two side posts. The flexible backrest body comprises a plurality of transversally extending and vertically spaced apart flexible straps each interconnecting the two side posts and ea

The flexible contour wheelchair backrest comprises two side posts, and a flexible backrest body extending between the two side posts. The flexible backrest body comprises a plurality of transversally extending and vertically spaced apart flexible straps each interconnecting the two side posts and each having an adjustable length, and a plurality of substantially stiff and malleable stays intersecting at least one of the flexible straps at right angle. Each side post defines an elongated curved front face for receiving the flexible backrest body. This elongated curved front face has a forwardly bulging section for inducing a depth dimension to the flexible backrest body to fit the posterior lateral contour of a user's back and thereby provide lateral support to the user's trunk. A mechanism is used to adjust the distance between the forwardly bulging sections of the elongated curved front faces. In operation, the contour of the backrest body can be adapted to the posterior lateral contour of a user's back by adjusting the distance between the forwardly bulging sections, the length of the straps, and the shape of the stays.

대표청구항 ▼

[ What is claimed is:] [10.] A flexible contour backrest comprising:two side posts; anda flexible backrest body extending between the two side posts and including two opposite sides attached to the two side posts, respectively; rein:each side post comprises an elongated curved front face;the two opp

[ What is claimed is:] [10.] A flexible contour backrest comprising:two side posts; anda flexible backrest body extending between the two side posts and including two opposite sides attached to the two side posts, respectively; rein:each side post comprises an elongated curved front face;the two opposite sides of the flexible backrest body are applied to and suspended from the elongated curved front faces of the two side posts, respectively;said elongated curved front face of each side post defines a forwardly bulging section inducing a depth dimension to the flexible backrest body;the flexible contour backrest further comprises, for each side post, a bulging sections inter-distance adjusting mechanism through which the distance between the forwardly bulging sections of the elongated curved front faces of the two side posts is adjusted;the two side posts each comprise a curved elongated member having a substantially straight lower end mounted to a chair frame, said substantially straight lower end having a longitudinal geometrical axis; andthe bulging sections inter-distance adjusting mechanism comprises a rotating mechanism interposed between the substantially straight lower end of the curved elongated member and the chair frame, said rotating mechanism having a rotation axis corresponding to said longitudinal geometrical axis.