| 摘要 |
<p>Method for the rational and cheap manufacture of a high-strength, high-precision hub for a spoke-wheel, mainly for the use in a wheel chair, the hub being given, by means of injection molding of a plastic material, a central part (1) having at each of its ends a flange (2) to co-operate the spokes and a seat (5) for receiving ball-bearings. The method is characterized by forming, during the injection molding, openings (4) for receiving the spokes as depressions not extending through the flanges (2) of the hub, and subsequently, after completing the injection molding, producing the openings. Further, the hub is molded as two separate parts (6, 7) having one flange (2) each, the parts being connected to each other after the injection molding. The final length in its axial direction is adjusted by placing an insert (18) into the connection area between the two parts. </p> |
