Patent ID: 8162345

Claim:
A foldable bicycle, comprising: gears; two wheels; and a frame, comprising: a front vertical tubular portion, including a lopsided portion horizontally disposed above a front fork and a positioning unit disposed on the lopsided portion; a front horizontal tubular portion, including a matching lopsided portion provided on a front end of the front horizontal tubular portion and a matching positioning member corresponding to the positioning unit provided on the matching lopsided portion; a rear horizontal tubular portion, wherein the gears and a rear fork are fitted on the rear horizontal tubular portion, and wherein a rear wheel of the two wheels is fitted on the rear fork, and wherein a hinge is provided between a front end of the rear horizontal tubular portion and a rear end of the front horizontal tubular portion; and a seat-supporting tubular portion, fitted on a seating portion to locate above the rear fork, wherein the seat-supporting tubular portion is positioned by a positioning rod, wherein when folding up the bicycle, first the positioning unit and the matching positioning member are disengaged to release the lopsided portion and the matching lopsided portion and then by pulling the rear horizontal tubular portion upwards the front horizontal tubular portion and the rear horizontal tubular portion may be folded up through the hinge to be positioned side by side with the front vertical tubular portion, so that the seat-supporting tubular portion may be retracted through the release of the positioning rod and the bicycle may be folded into a smallest volume.