| 摘要 |
The flip-pivot bicycle is a collapsible bicycle, that can be folded by a new method, and belongs into the class of the bicycles foldable about two or more axes. The flip-pivot bicycle consists of a driving-frame-segment (1) comprising the driving-wheel (7), a steering-frame-segment (3), comprising the steering-wheel (6), and a central-frame-segment (2), which connects them. The central-frame-segment (2) and the driving- frame-segment (1) is connected by and can pivot above a pivot-axis (4), which pivot-axis (4) is perpendicular to the plane of the parallelly positioned wheels (6, 7), or forms an angle of maximum 45 degree with this perpendicular. The central-frame-segment (2) and the steering-frame-segment (3) is connected and can pivote by a flip-axis (5), which flip-axis (5) is in the plane of the parallelly positioned wheels (6, 7), or is parallel to this plane, or forms an angle of maximum 45 degree with this plane. The function of the flip-axis (5) is to relocate the wheel distant to the pivot-axis (4) as close (or approximately as close) to the pivot-axis (4) as the other wheel is. Thereby flipping the driving-frame-segment (1) on the central- frame-segment (2) by the flip-axis (5), and offset the original planes of the wheels (6, 7) in the meantime, the two wheels (6, 7) can be folded next to each-other. Beyond the above, the flip-pivot bicycle can be equipped with an extra frame-brace; with central- suspension; with crank-anus with releasable fixing which can be re-fixed also in less than 180 degree to each-other, and/or the with pedals inward; with stem that can be slided into one of the forks or next to it; and with seatpost running out of the plane of the driving wheel. |
