Patent ID: 8341802

Claim:
A robot cleaner comprising: a cleaner body; and a dust tank removably mounted to the cleaner body to collect dust, the dust tank including a shutter unit to prohibit dust collected in the dust tank from flowing outside through a suction port of the dust tank, the shutter unit having a shutter member movable between an open position and a closed position to open and close the suction port, the shutter unit configured such that the shutter member automatically moves to the closed position when the dust tank is removed from the cleaner body or when the cleaner body with the dust tank mounted thereto is lifted off from a floor, and the shutter member automatically moves to the open position when the cleaner body with the dust tank mounted thereto is placed on the floor, wherein the shutter unit is capable of moving the shutter member to the open position without engaging any part of the dust tank with the floor.