| 摘要 |
<p>The present invention relates to an apparatus for cleaning windows comprising: a first cleaning unit, which is positioned on one side of a window, having a built-in first magnetic module comprising a magnet or a magnetic material; and a second cleaning unit, which is positioned on the opposite side of the window on which the first cleaning unit is positioned, having a built-in second magnetic module comprising a magnet or a magnetic material so as to generate magnetic attraction with the first magnetic module of the first cleaning unit, wherein the first and second cleaning units, each attached to either sides of the window, respectively, due to the magnetic attraction, clean one or both sides of the window while moving together. The first cleaning unit according to a feature of the present invention comprises: a magnetic movement module for moving the first magnetic module either towards or away from the second magnetic module; a sensor module which comprises at least one sensor, and which provides information detected from the sensor; and a control module for controlling the movement of the magnetic movement module by means of the information provided by the sensor module. The window cleaning apparatus according to the present invention can stably move the cleaning units by maintaining the magnetic attraction at an appropriate strength, which is manipulated by dynamically controlling the distance between the magnets in accordance with a variety of window widths, and has the benefit of providing an effective cleaning by always cleaning the window with a constant strength.</p> |
