Auxiliary wheel structure for kid bicycle

An auxiliary wheel structure for kid bicycle, comprising:

• a mounting bracket having a predetermined length being fixedly mounted to each of two ends of a hub of a rear wheel of a kid bicycle, and the mounting bracket being provided at predetermined positions with an upper through hole and a lower through hole in a horizontal direction;
• a lifting arm pivotally connecting at an upper end to the upper through hole of the mounting bracket via a pivotal connection assembly, and the lifting arm being provided at a middle portion with a row of adjusting holes;
• an auxiliary wheel axle pivotally connecting at an inner end to the lower through hole of the mounting bracket via a pivotal connection assembly, and connecting at an outer end to an auxiliary wheel, and the auxiliary wheel axle being further provided at a predetermined position with a small hole;
• and
• a control assembly arranged to be insertably disposed through one of the adjusting holes on the lifting arm and the small hole on the auxiliary wheel axle to connect the lifting arm with the auxiliary wheel axle;
• whereby when the control assembly is adjusted to insert through a different one of the adjusting holes on the lifting arm and the small hole on the auxiliary wheel axle, a pivotal interval between the pivotally connected lifting arm and auxiliary wheel axle is changed to thereby control an angle of inclination of the auxiliary wheel at each lateral side of the rear wheel of the kid bicycle;
• wherein each of the adjusting holes on the lifting arm has a curved side forming a concaved recess, and an opposing side communicating with a long slot;
• and the control assembly is movable along the long slot to securely engage with any one of the adjusting holes.