Patent ID: 8667638

Claim:
A robot cleaner, comprising: a main body having a suction port at a bottom surface thereof; a pair of wheel assemblies disposed at both sides of the main body, and configured to move the main body; a dust box installed on the bottom surface of the main body, and configured to collect dust sucked through the suction port; a filter unit configured to filter air discharged from the dust box; a suction fan configured to form a suction pressure on a suction channel defined by the suction port, the dust box and the filter unit; and a battery disposed at a side of the dust box; an agitator rotatably mounted to a lower part of the main body; side brushes mounted so as to be rotatable with a rotation shaft extending in a vertical direction of the main body; and a driving force transmission device configured to transmit a rotational force of the agitator to the side brushes, wherein the dust box is disposed between the suction port and the filter unit with respect to a longitudinal direction of the main body.