Patent ID: 8861051

Claim:
A roller assembly, comprising: a roller shaft defining at least one clipping slot; a roller base, the roller shaft passing rearward through the roller base to rotatably mount the roller base to the roller shaft, an inside of the roller base extending forward to form an elastic arm, a free end of the elastic arm projecting beyond a front surface of the roller base, the free end of the elastic arm defining a hook portion hooked in the clipping slot to restrain the roller base on the roller shaft; and at least one roller set around the roller base, wherein the roller base has a tube-shaped connecting portion, a front end and a rear end of the connecting portion are respectively connected with a tube-shaped front sleeve portion and a tube-shaped rear sleeve portion, the front and rear sleeve portions have two opposite ring-shaped sidewalls respectively connected with the outer periphery of the connecting portion, each of the front and rear sleeve portions has a receiving space therein, the front end and the rear end of the connecting portion respectively project into the two receiving spaces of the front and rear sleeve portions.