Patent ID: 7703588

Claim:
A wheel assembly of a luggage, which is mounted on an object, comprising: a wheel base, which is pivoted on the object along a vertical direction, having a through bore along the vertical direction and a transverse axial bore through opposite sides of the wheel base and deviating the vertical direction; a left wheel, which is pivoted on the wheel base, having a concave portion on a side, in which an inner annular wall having a plurality of slots is formed; a right wheel, which is pivoted on the wheel base beside the left wheel, having a concave portion, in which an inner annular wall having a plurality of slots is formed, on a side facing the side of the left wheel having the concave portion; an axle inserted through the axial bore of the wheel base and connecting the left wheel and the right wheel respectively; and a control assembly, which includes a switch device pivotally arranged above the wheel base, an axial shaft inserted through the through bore of the wheel base and moved by the switch device for a movement along the vertical direction, and a brake device having an end connected to a bottom end of the axial shaft and an opposite end with a transverse stop piece having opposite ends engaged with the slots of the left wheel and the right wheel when the axial shaft is moved upwards.