Pedal structure for a bicycle

A pedal structure for a bicycle, comprising a pedal body, and an elastic clamping device, wherein:

• the pedal body has two opposite sides;
• the elastic clamping device is mounted on each of the two opposite sides of the pedal body, and includes a front binding plate, a rear binding plate, a pivot shaft, at least one torsion spring, an urging plate, and an adjusting bolt, wherein:
• the pivot shaft of the elastic clamping device is secured on each of the two opposite sides of the pedal body;
• the front binding plate of the elastic clamping device is pivotally mounted on the pivot shaft;
• the rear binding plate of the elastic clamping device is pivotally mounted on the pivot shaft;
• the adjusting bolt of the elastic clamping device is extended through the rear binding plate;
• the urging plate of the elastic clamping device is secured on a distal end of the adjusting bolt;
• the at least one torsion spring of the elastic clamping device is pivotally mounted on the pivot shaft and has a first end passed through a gap defined between the front binding plate and the rear binding plate and urged on the front binding plate and a second end urged on the urging plate;
• the front binding plate has a inward directed clamping force provided by the urging force of the at least one torsion spring;
• the rear binding plate has an inward directed clamping force provided by the urging force of the at least one torsion spring;
• the pedal structure further comprises a cleat mounted on the pedal body and clamped between the front binding plate and the rear binding plate, where the cleat has a rear end formed with a concave portion, and the rear binding plate has a bottom formed with a protrusion snapped into the concave portion of the cleat;
• the front binding plate of the elastic clamping device has a center formed with a protruding clamping portion which has two sides each formed with a stepped portion which has a front end formed with a resting edge, and the cleat has a front end secured in the clamping portion of the front biding plate and rested on the resting edge of the stepped portion of the front binding plate.