| 摘要 |
A manhole structure and a manufacturing method of a manhole are provided to make pleasant environment around a manhole by preventing the leakage of filth, and to increase production and to decrease the proportion of defectives by manufacturing a manhole with a simple progress. A manhole structure comprises a main body(10) having a hollow within and a connecting hole on the lower side, a cover(20) put on the upper part of the main body, a connection pipe(30) composed of an inner support portion(32) supporting the inside of the main body, a discharge portion(34) projected to the outside of the main body by being smaller than the diameter of the connecting hole formed in the main body and a fusion portion(36) corresponding to the diameter of the connecting hole formed in the main body, and coupled from the inside of the main body to the outside, and a ring-shaped assembly(40) whose one side is coupled with the fusion portion by thermal bonding and the other side supports the outside of the main body. |
