| 摘要 |
A roller-wheeled bike structure comprises a main frame with a seat tube locked to a seatpost topped by a saddle with a level handle extending at the front lower section. A lower bracket having a five-way tube connected to a pedal chain set is welded to the lower front side of the seat tube. A rear fork is joined both to the back side of the lower bracket and the middle section of the seat tube. A transverse-extending guide shaft of the front wheel seat has both ends equipped with a guide plate and a front wheel respectively and conjoined to each other by a parallel link. The connecting tube is fixed to the lower bracket for the mounting of an operational control post composed of a coupling tube and a support rod. Therefore, the roller-wheeled bike can be stably ridden in multiple ways and economically collapsed for packing/shipping purposes.
|
