Abstract: A wheel assembly including a wheel having a recessed wall portion at an outer side and a smoothly curved peripheral wall portion around the recessed wall portion, a wheel cover having a plurality of sliding grooves radially disposed at an inner side and a plurality of locating blocks by the sliding grooves, the locating blocks defining with the wheel cover a respective receiving chamber, and a plurality of clamps fastened to the wheel and the wheel cover to hold them together, each clamp having one end hooked on the peripheral wall portion of the wheel and an opposite end inserted through one sliding groove into the corresponding receiving chamber.