Bicycle, has bottom bracket comprising projection lying on rear wheel level within rear wheel surface, where bottom bracket is integrated into large volume crossbars that form oscillating line in side view from control tube

摘要

The bicycle has a bottom bracket (6) comprising a projection lying on a rear wheel level within a rear wheel surface, where the bottom bracket is integrated into large volume crossbars. The crossbar forms an oscillating line in a side view from a control tube to a saddle bracket. An area between a front wheel and a rear wheel allows pulling of a child seat. A reciprocally working stand is fastened to a lower frame area, and a transportation box designed as folding box is provided. A hollow axle in a rear wheel hub (7) serves for coupling of two bottom brackets.