| 摘要 |
PROBLEM TO BE SOLVED: To provide an invert device for a rainwater basin, capable of restraining an inflow object from depositing, by smoothly discharging the inflow object such as a branch, fallen leaves and sediment flowing in a basin together with rainwater, to an installation pipe, by being installed in the rainwater basin.SOLUTION: The invert device for a rainwater basin comprises an insertion part 11 inserted into a pipe port of the installation pipe connected to the rainwater basin and a water-conveyance groove 12 installed in the rainwater basin, continuing with the insertion part 11 and having a surface 12a formed in a concave shape of a substantially semicylindrical shape. The surface 12a of the water-conveyance groove 12 is formed so that a groove width becomes narrow while being inclined downward toward the insertion part 11, and both upper ends of the water-conveyance groove 12 in a position of continuing with at least the insertion part 11, are positioned above a horizontal line of passing through a central point of the installation pipe. |
