Robot cleaner

A robot cleaner comprising:

• a main unit having an inlet;
• a fan motor arranged in the main unit for producing a suction force to thereby cause air and foreign materials on a floor to be absorbed through the inlet;
• a dust collector to separate the absorbed foreign materials from the absorbed air, and to keep the separated foreign materials;
• and
• multiple cleaning tools arranged on a bottom of the main unit to guide the foreign materials on the floor to the inlet,
• wherein a shortest distance between a respective cleaning tool of the multiple cleaning tools and an adjacent cleaning tool of the multiple cleaning tools that is adjacent to the respective cleaning tool gets farther as the respective cleaning tool and the adjacent clean tool become farther away from the inlet.

A robot cleaner comprising:

• a main unit including a fan motor and a dust collector and having an inlet arranged in a bottom of the main unit;
• and
• first and second cleaning tools arranged on the bottom of the main unit to pick up and guide foreign materials on a floor to the inlet, wherein
• the first cleaning tool extends from a side of the inlet to a right front side of the main unit and the second cleaning tool extends from the side of the inlet to a left front side of the main unit, and
• at least one of the first and second cleaning tools is arranged to be rotated around a rotation axis when pressed by a foreign material on the floor that lies between the first and second cleaning tools.

A robot cleaner comprising:

• a bottom surface having an inlet, the inlet having a front side corresponding to a front of the robot cleaner;
• a first cleaning tool having an elongated shape extending at least from the front side of the inlet toward a right front side of the robot cleaner at an acute angle from a straight, forward travel direction of the robot cleaner, and
• a second cleaning tool having an elongated shape extending at least from the front side of the inlet toward a left front side of the robot cleaner at an acute angle from the straight, forward travel direction of the robot cleaner,
• the first and second cleaning tools thereby being configured to guide foreign materials on a floor being cleaned by the robot cleaner into the inlet.

A robot cleaner comprising:

• a bottom surface having an inlet;
• and
• first and second elongated cleaning tools which contact a floor as the robot cleaner travels along the floor to clean the floor,
• wherein the first and second elongated cleaning tools are positioned on the robot cleaner with respect to each other, and are positioned on the robot cleaner with respect to the inlet, so that, as the robot cleaner travels in a forward travel direction to clean the floor, foreign materials on the floor between the first and second cleaning tools are funneled by the first and second cleaning tools into the inlet.