BRIEF DESCRIPTION OF THE DRAWINGS
These and/or other aspects and advantages of the invention will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, of which:
FIG. 1 is a perspective view showing the exterior of a robot cleaning system in accordance with the invention;
FIG. 2 is a side sectional view showing the configuration of a first cleaning unit of the robot cleaning system in accordance with the invention;
FIG. 3 is a side sectional view showing the configuration of a second cleaning unit of the robot cleaning system in accordance with the invention; and
FIG. 4 is a side sectional view of the robot cleaning system in accordance with the invention, showing the first and second cleaning units, which are coupled to each other.