Robot cleaner and method for controlling the same
Active Publication Date: 2018-02-01
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Benefits of technology
[0022]According to the various exemplary embodiments of the present invention described above, the robot cleaner may travel, while performing wet cleaning, using rotational force of the pair of rotary member as a movement power source.
[0023]Also, according to the various exemplary embodiments of the present invention described above, since the robot cleaner uses rotational force of the pair of rotary members as a movement power source, battery efficiency may be improved.
[0024]In addition, according to the various exemplary embodiments of the present invention described above, the robot cleaner may effectively remove impurities set in a target cleaning surface through frictional contact between a first cleaner and a second cleaner respectively rotating according to rotational motions of a first rotary member and a second rotary member and a target cleaning surface.
[0025]In addition, according to the various exemplary embodiments of the present invention described above, since the robot cleaner is prevented from entering a region below an obstacle positioned to float at a predetermined height such as a sofa, a bed, and the like, a problem in which the robot cleaner is lost as a battery thereof is discharged below the obstacle, a problem in which the robot cleaner is caught by an electric line below the obstacle, or the like, so it cannot travel, and the like, may be solved.
Problems solved by technology
A robot cleaner including such a vacuum cleaner, however, has limitations in that it cannot remove impurities or stains set in a target cleaning surface, and thus, recently, a robot cleaner having a floorcloth attached thereto to perform wet cleaning has emerged.
However, a wet cleaning scheme using a general robot cleaner is a simple scheme of attaching a floorcloth to a lower portion of the existing robot cleaner for vacuum cleaning, having a low effect of removing foreign object and not performing effective wet cleaning.
In particular, the robot cleaner based on the general wet cleaning scheme travels using a movement scheme of an existing suction type vacuum cleaner and an avoidance method regarding an obstacle as is, and thus, it cannot easily remove a foreign object set in the target cleaning surface, although it removes dust from the target cleaning surface.
Also, the general robot cleaner having the floorcloth-attached structure is moved by wheels in a state in which frictional force with the floor is high due to the plane of the floorcloth, additional driving force to move the wheels is required, increasing battery consumption.
Method used
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[0036]The following content merely illustrates the principles of the invention. Therefore, although it is not clearly described or illustrated herein, those skilled in the art may implement the principles of the present invention that includes a wide variety of devices that can be invented. In addition, all conditional terms listed herein and understood that the embodiments are intended only for the purpose of, in principle, to understand the concept of the present invention is clearly not limited to the embodiment and state specifically enumerated.
[0037]In addition, it should be understood that all the detailed descriptions for specific embodiments, as well as the principle, perspectives, and embodiments, intentionally include structural and functional equivalents of such matters. Also, it should be understood that the equivalents include all the devices invented to perform the same functions irrespective of the equivalents, i.e., structures, to be developed in the future, as
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Provided herein is a robot cleaner. The robot cleaner includes a main body, a driving unit provided in the main body and supplying power for traveling of the robot cleaner, first and second rotary members respectively rotating about first and second rotational axes based on power from the driving unit and allowing cleaners for wet cleaning to be fixed thereto, a sensing unit sensing whether a traveling position of the robot cleaner is below an obstacle, and a controller controlling, when it is determined that the traveling position of the robot cleaner is below the obstacle on the basis of a sensing signal from the sensing unit, the driving unit such that the robot cleaner avoids a lower side of the obstacle.
Description
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