Bicycle deriving driving force by motor-generator

A bicycle deriving driving force by a motor-generator having a rotating plate (10) of a nonmagnetic material having a plurality of radially fixed magnets (11, 11′), fixed plates (20, 20′) of a nonmagnetic material which are placed on both sides of the rotating plate (10) and have a plurality of horizontally wound coil units (21, 21′) corresponding to the magnets (11, 11′), and a rotating axis (12) which is mounted on a center of the rotating plate (10) and at both ends of which are fixed the plates (20, 20′) through the bearings, the bicycle comprising:

• a motor-generator (30) which is mounted on a side of a rear wheel of the bicycle (50);
• a power transmission means including a driving pulley (53) which is fixed on a shaft (52) where the rear wheel (51) of the bicycle (50) is rotatably mounted, a driven pulley (13) which is mounted on one end of the rotating axis (12) mounted on the center of the rotating plate (10), a belt (54) which operatively connects the driving pulley (53) and the driven pulley (13);
• a control box (60) and a battery (70) which are mounted on the bicycle (50) and are connected with the coil units (21, 21′);
• a change-over switch (56) which is mounted on the handle (55) of the bicycle (50) and converts the motor-generator in such a way that it can be used selectively as a generator or a motor, and
• a bend shaped support (80) includes a lower end and an upper end, the lower end is fixed on the shaft (52) and the upper end is fixed to the bicycle (50), and the fixed plate (20) is joined to the support (80),
• wherein the coil units (21, 21′) formed on the fixed plate (20, 20′) are connected by a variable speed unit (66) that controls the short-circuit form of the electricity applied to the coil units (21, 21′), and the variable speed unit (66) is controlled and operated by a speed change switch (57) mounted on the handle (55) of the bicycle (50).