| 摘要 |
A foldable bicycle is provided. One feature of the foldable bicycle is that the central portion of the frame that defines the bicycle's geometry is substantially rigid. That is, the down tube (170), seat tube (25), top tube (15) and bearing tube (30) are substantially fixed relative to each other. Another feature of the foldable bicycle is that the front wheel (175) can be folded into a position between the downtube assembly (170), which is comprised of two tubes. Another feature is that a ratio of distances between and among tubes of the foldable bicycle is within a predetermined range. |
