| 摘要 |
A foldable, portable bicycle in which the handlebar, is elongated post, the seat assembly, the pedal crank and the frame are foldable quickly and easily into a compact and regular-shaped package that is easily portable and storable, and are unfoldable with similar speed and ease into a safe, durable and comfortable bicycle that accommodates adults of normal size. The frame is designed with a low profile that is substantially the same in height and thickness as the dimensions of the wheels and their supports, and the handlebar and seat assemblies extend upwardly to normal height, but fold and collapse in novel ways, along with the pedals, to substantially within the confines outlined by the folded frame. Unique quick-release latches are provided for the handlebar post, the seat post sections, the frame hinge and the pedal hinges, and the pedal cranks are specially designed for effective performance and easy, compact folding. Optional features include an enclosed front carrying compartment, a bracing cable permitting the seat post to be made of lighter materials, a rear carrying rack that extends the flat and low profile across the rear frame section, and a shopping cart mode in which the partially folded frame is held with the two bicycle wheels parallel, and an auxiliary wheel assembly stored in the mid-portion of the frame is swung out to form a 3-wheel cart with a carrying deck.
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