| 摘要 |
PURPOSE: A device for driving a variable pedal in a bicycle is provided to reduce weight by simplifying structure and to conveniently drive by reducing clearance from a crank. CONSTITUTION: A variable pedal driving device of a bicycle comprises a crank arm(3) fixed on a crank shaft(1); an inserting hole(11) formed on the other end of the crank arm; a pedal shaft(6) rotationally inserted to the inserting hole; a bending unit(7) curved toward a right angle direction from the pedal shaft; a pedal(10) fixed on a side of the bending unit; connecting holes(8,9) arranged on a side of the pedal; a connecting bolt(12) inserted to the connecting hole; and a bearing(16) installed on a contacting unit of a pedal arm(5). Thereby, the variable pedal-driving device of the bicycle conveniently drives the bicycle by reducing clearance from the crank. Moreover, the variable pedal-driving device of a bicycle reduces weight and size by simplifying structure.
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