Single face clipless pedal structure of road bicycle

A single-face clipless pedal structure of road bicycle, adapted for a cleat to be disposed thereon, the cleat having a front engaging portion at a front side thereof and a rear engaging portion at a rear side thereof, the cleat being formed with an abutting piece extending downward on a bottom face thereof, the abutting piece being located between the front engaging portion and the rear engaging portion, the abutting piece having an abutting face at a side facing the rear engaging portion, the abutting piece further having a third guiding face and a fourth guiding face which are arc and convex at two sides of the abutting face, the single-face clipless pedal structure of road bicycle including:

• a pedal body, defining a horizontal direction, a longitudinal direction, and a vertical direction which are perpendicular to each other, the pedal body having a front portion, an axle portion, and a rear portion along the longitudinal direction, the axle portion extending along the horizontal direction, the front portion being U-shaped and being connected to the axle portion with two ends thereof so that an insertion space is enclosed by the axle portion and the front portion, the rear portion having a positioning structure movable between a lock position and a release position, the axle portion having a top face, the top face being formed with a stepped portion recessed downward at a side thereof near the insertion space, the stepped portion being opened to the insertion space and at least comprising a bottom wall and a lateral wall which are unparallel to each other and connected to each other, the lateral wall including a first guiding face, a stopping face, and a second guiding face along the horizontal direction, the first guiding face and the second guiding face bending toward the front portion to be arc concave-shaped so that the lateral wall is U-shaped when observed above the pedal body downward, the front portion having a stopping portion at a frontmost end toward the insertion space;
• wherein the stopping face of the pedal body is adapted for the abutting face of the cleat to abut against so that the cleat is prohibited from moving rearward further with respect to the pedal body, the first guiding face and the second guiding face correspond to the third guiding face and the fourth guiding face respectively, the stopping portion of the pedal body is adapted for connecting to the front engaging portion, the rear portion of the pedal body corresponds to the rear engaging portion;
• when the positioning structure is at the lock position, the rear engaging portion is restricted by the positioning structure to be prohibited from detaching upward;
• when the positioning structure is at the release position, the rear engaging portion is detachable upward;
• wherein the single-face clipless pedal structure of road bicycle further including a wear resistant pad, the wear resistant pad has an inclined wing portion at each of two sides thereof, each of the wing portions extends upward and outward, the top face of the axle portion has an inclined face at each of two ends thereof along the horizontal direction, each of the inclined faces extends upward and outward, the wear resistant pad is disposed on the top face of the axle portion to be sandwiched between the axle portion and the cleat, the two wing portions of the wear resistant pad abut against the two inclined faces;
• wherein an angle between the top face of the axle portion and each of the inclined faces is 3-5 degrees.