INTEGRALLY INJECTION-CAST IMPELLER HAVING HIGH STABILITY

The invention relates to a stable impeller having low weight, which is in particular suitable for bicycles having increased system weight, such as electrically driven bicycles and cargo bicycles, andto a manufacturing method therefor. The impeller according to the invention has a hub, at least three full body spokes arranged rotation-symmetrically to the wheel axle, and a rim, wherein the body, consisting of hub, spokes and rim, is produced integrally by injection casting from a fiberglass reinforced thermoplastic synthetic material. The spokes have an S-shaped cross-section, having an increasing opening angle in the direction of the rim, taper in the wheel center section from the rim to the hub and taper in a wheel cross-section extending through at least one spoke from the hub to the rim. 本发明涉及种稳定的低重量车轮以及制造该车轮的方法，所述车轮特别适用于高系统重量的自行车、例如电动自行车和载货自行车。根据本发明的车轮包括轮毂、至少三个关于轮轴线旋转对称地布置的实心体轮辐、以及轮缘，其中，由轮毂、轮辐和轮缘形成的主体通过玻璃纤维增强式热塑性塑料的注射成型制成体件。轮辐具有S形横截面，所述S形横截面的张开角度向轮缘的方向增大，轮辐在车轮的中央横截面中从轮缘朝向轮毂窄缩，并且在通过至少个轮辐的中央延伸的车轮横截面中从轮毂朝向轮缘