Abstract: A storage case mounting structure including an upright back frame raised from a rear side of a seat of a baby cart, and a storage case fixedly fastened to the upright back frame to serve as a seat back, the storage case including a case body adapted for holding things and having a retaining hole on the inside, a cover hinged to the case body and having a springy retainer rod adapted to be forced into engagement with the retaining hole of the case body to secure the cover in the closed position, and a hollow, bottom-open coupling block integrally formed at the front side of the case body and sleeved onto the upright back frame of the baby cart and fixedly secured thereto by fastening means, the coupling block having a smoothly curved front side adapted to support the back of the child who rides the baby cart.

Abstract: A baby-walker including a top table, an annular base frame having a plurality of downwardly disposed bottom coupling holes around the border, a plurality of wheel assemblies and an extension stand respectively coupled to the downward coupling holes of the base frame by a respective anchoring socket and a respective bolt, and a linkage coupled between the top table and the base frame, the extension stand being moved between the operative position in which the baby-walker is supported on the ground by the extension stand and allowed to be turned about the extension stand, and the wheel assemblies are suspending above the lowest end of said extension stand, and the non-operative position in which the baby-walker is supported on the ground by the wheel assemblies and the extension stand is suspending from the base frame above the elevation of the wheel assemblies.

Abstract: A wheel-driven percussion instrument includes a cam made on an inner side of one wheel of a baby car. A spring supported transmission rod in a casing at the bottom of the baby car reciprocates by action of the cam. Two metal plates bilaterally disposed inside the casing, and pendulum horizontally is disposed inside the casing. When the transmission rod reciprocates, the pendulum is moved to sound the metal plates alternatively.