| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent rainwater from entering the cable conduit leading-in hole in the wall of a building and also prevent an installation in the leading-in hole from loosening and coming off. SOLUTION: Inside interposition rubber disks 5, 6 are disposed on both sides of a central water-swollen disk 7, rubber disk packings 3, 4 with a projected edge piece in which a projected edge piece 25 is provided in the one-side surface are disposed on both sides thereof, fastening plates 1, 2 in the shape of a folding fan are disposed on both sides thereof, and those are fastened by a bolt 8 and a nut 9 in the cable conduit leading-in hole in the wall of a building for fixation. When rainwater enters there, the central water-swollen disk 7 is expanded, and its periphery adheres closely to the inner circumferential surface of the cable conduit leading-in hole to cut off water. Even when rainwater is gone, an installation is prevented from loosening and coming off because the projected edge piece 25 of the rubber disk packings 3, 4 is pressed against the inner circumferential surface of the cable conduit leading-in hole and fixed thereto.</p> |
