Bicycle frame

摘要

The bicycle frame (10) has two fixture devices (11,13) for two wheels (12,14). Upper and lower frame areas (21,22) are provided by which the two fixture devices are connected. A seat tube (30) is provided which has upper and lower ends. A guiding device flexibly guides the seat tube in the upper frame area in such a manner that the upper end of the seat tube conducts an angular movement relative to the lower end of the seat tube. The seat tube is integrally formed with the upper frame area.