| 摘要 |
The cleaning device of the present invention comprises: a cleaning portion, the cleaning portion is provided with a cleaning surface and an opposite surface opposed to the cleaning surface; a supporting arm (4); and a pivoting mechanism (5) for pivotably supporting the supporting arm (4) on the opposite surface. The cleaning surface (3) of the cleaning portion includes a first cleaning material surface (3a) and a second cleaning material surface (3b), the first cleaning material surface (3a) and the second cleaning material surface (3b) come into contact with the surfaces to be cleaned, respectively. When any one of the first cleaning material surface (3a) and the second cleaning material surface (3b) comes into contact with the surface to be cleaned, the other cleaning material surface has an angle (alpha) from 90 degrees to 180 degrees with respect to the surface to be cleaned.
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