| 摘要 |
<p>PROBLEM TO BE SOLVED: To perform correction by attaching a ring-shaped irregular waveform tube, when a ring-shaped irregular waveform tube is used as a connecting coupling tube to a handhole and the like in a bellmouth, which can be strongly coupled with the tube body of the irregular waveform tube, whose tube-wall shape has a ring-shape without falling. SOLUTION: This is a bellmouth, which is used in coupling with the opening part of a ring-shaped irregular waveform tube P used in coupling with the pipe connecting hole formed at the electric-wire relaying part of a handhole, manhole or the like, and constituted of a bellmouth main body B and a coupling ring R. The bellmouth main body B has a plurality of engaging projections which protrude into the radial direction with an interval, provided in the axial direction on the outer surface of a tubular part 1. The constitution, wherein a engaging projection 2 holds strong resistance against the tubular opening part is provided. The coupling ring R is formed in to an approximately C-shape and has elasticity in the diameter shrinking direction. An inner-diameter part 12 and the engaging projection 2 are engaged to each other.</p> |
