Wheel assembly

The utility model discloses a wheel assembly which comprises a wheel support and a supporting shaft. A shaft installation hole is formed in the wheel support, the supporting shaft is installed in the shaft installation hole and is rotationally matched with the wheel support, an annular notch is formed in the supporting shaft, an annular boss is arranged at the lower end of the annular notch, an inserting piece installation groove is formed in the wheel support, the inserting piece installation groove corresponds to the annular notch in the supporting shaft in position, and the inserting piece installation groove is communicated with the shaft installation hole. A deforming area is arranged on the side wall of the shaft installation hole, and the deforming area corresponds to the inserting piece installation groove in position. The inserting piece installation groove is provided with a metal fixing inserting piece, the fixing inserting piece enters the shaft installation hole and is matched with the annular notch in the supporting shaft, and in the process of arranging the supporting shaft into the shaft installation hole, the fixing inserting piece is ejected to be bent by the annular boss of the supporting shaft and enters the deforming area to elastically deform. The wheel assembly has the advantages of being convenient to install, firm in connection and capable of being assembled after being delivered from a factory.