A FOLDING BICYCLE WHICH HAS ROTATIONAL REAR WHEEL FRAME

摘要

The present invention relates to a foldable bicycle capable of changing a structure thereof using a hinge of an upper end frame comprising: a rear wheel frame to support a rear wheel; a front wheel frame to support a front wheel; an upper end frame connecting the rear wheel frame to the front wheel frame, including a foldable hinge; and a lower end frame having an end connected to a rotation part on the rear wheel frame having the other end connected to an auxiliary frame of the upper end frame. When the bicycle is not used, the size of the bicycle is reduced as a fixating part of the lower end frame is separated from the upper end frame; the rear wheel frame and the lower end frame are aligned near to the auxiliary frame of the upper end frame while rotating; and the front wheel frame moves to the rear wheel frame while the upper end frame is folded around a hinge. When the bicycle is used, the foldable hinge of the upper end frame is unfolded; the front wheel frame is separated from the rear wheel frame to rotate; the fixating part of the lower end frame is separated from the auxiliary frame of the upper end frame to rotate the lower end frame and the rear wheel frame; and the fixating part of the lower end frame is combined with a connection guide on the auxiliary frame of the upper end frame to support the load of the bicycle. Realized is a foldable bicycle which has the structure of supporting load identical to the load of a traditional foldable bicycle using the rear wheel frame and the lower end frame, and is miniaturized in a folded state when not in use.