To provide a device for cleaning the inner wall surface of an aquarium, capable of cleaning the inner wall surface of the aquarium while requiring almost no time and effort.
The device for cleaning the inner wall surface of the aquarium comprises an outside part 10 and an inside part 20 magnetically oppositely stuck to each other by sandwiching the wall of the aquarium 30. The outside part 10 includes a driving body 14 for self-propellant on the outer wall surface of the aquarium, and a plurality of balls 15 contacting with the outer wall surface of the aquarium. The inside part 20 includes a cleaning member (sponge 27) for rubbing the inner wall surface of the aquarium, and an aquatic screw 26 at the position deviated from the center of gravity. The driving force of the aquatic screw 26 acts on the direction except the direction of the center of the gravity and the opposite direction thereof. The device for cleaning the inner wall surface of the aquarium can advance while escaping from the collision by the change of the advancing direction of the driving body 14 by the driving force of the screw 26 even when the traveling is blocked by the collision with the side wall of the aquarium. The device for cleaning the inner wall surface of the aquarium cleans the whole of the inner wall surface of the aquarium by repeating the movement and traveling in various directions.
COPYRIGHT: (C)2011,JPO&INPIT
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Tadashi Sugakawa
Hiroaki Ito