Patent ID: 8272655

Claim:
A mini bike having a pedal as a power generator that has a handle 3 in an upper part in order to steer a front wheel 1 and connects a front wheel 1 side and a rear wheel 2 to a bike body 9 , and drives the wheels by operating a pedal connected to a plurality of gears, and adjusts a speed thereof using a brake handle 7 installed in the handle 3 , comprising: a driver A connecting a pedal shaft 12 between both pedals 11 and 11 ′ and in which a spring 16 is installed at the inside of a connector of both sides of the pedal shaft to which both pedals 11 and 11 ′ are connected, and in which one end of the pedal shaft 12 and a shaft 13 are connected to a first bevel gear 14 in order to transmit rotation power generated by a vertical rolling motion due to an elastic force of the spring 16 ; a second bevel gear 22 installed to connect the other side end of the shaft 13 and a driver shaft 21 in order to transmit rotation power generated in the driver A; a first power transmission gear 25 coaxially installed in on the drive shaft 21 and being engaged with a second transmission gear 24 in order to transmit rotation power to a spline shaft 23 ; a clutch 28 that is positioned at the spline shaft 23 to selectively connect rotation power of the first power transmission gear 25 to a first gearshift 26 and a second gearshift 27 and controls a low speed and a high speed; a first connection gear 29 and a first driving gear 30 engaged with the first gearshift 26 rotating by selection of the clutch 28 to rotate the rear wheel in a low speed; a second connection gear 31 and a second driving gear 32 connected to a third connection gear engaged with the second gearshift 27 by selection of the clutch to be connected to rotate the rear wheel in a high speed; and a driving controller B comprising a gearshift 34 connected to a cable 33 in order to select the first gearshift 26 and the second gearshift 27 by laterally moving the clutch 28 on the spline shaft 23 .