| 摘要 |
<p>A wheelchair (12) is made from plastics material and is composed of two side frames (10 and 10') each characterised by a single integral unit (14) which comprises a plurality of integrally connected elongate elements (16, 18, 20, 22, 24 and 26). Each of the elongate elements (16-26) comprises a planar web (W) and a pair of flanges (F1 and F2) formed integrally along opposed longitudinal edges of the web (W) so that each elongate element has a substantially I-shaped or H-shaped transverse section. The flanges are radiused at the connecting points of the elements. The element (16) is provided with a recess (28) so as to couple to a front wheel caster (32). A web (38) is formed integrally with and spans second and third elongate elements (18 and 20). The web (38) is provided with three holes (39, 40 and 41) and is sandwiched between two blocks with corresponding holes to provide bulk for securing an axle of rear wheel (34). The axle passing through any one of the three holes any one of which can receive an axle of a rear wheel (34). The substantially identical side frames (10 and 10') can be connected together by a folding mechanism (42) to form a wheelchair structure. Fabric seat (56) and back support (60) are attached at opposite sides of the side frames (10 and 10').</p> |
