| 摘要 |
PROBLEM TO BE SOLVED: To enable installation to an existing bathtub. SOLUTION: The bathtub mounting part 101 of a bathtub cleaning device is matched with a hole (a) of a diameter of 55-45 mm, preferably 50 mm bored in a bathtub 4. Or, the bathtub mounting part 101 of the bathtub cleaning device is in the shape of a cylindrical male screw part 14 in which an outer periphery is subjected to male-screw machining and is of a maximum outer size of 50-40 mm, preferably 48-45 mm.
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