| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure and a method for connecting a corrugated tube water-tightly connected by a simple work and having superior workability. SOLUTION: This connecting structure is so formed that both ends of corrugated tubes 10, 10 alternately having annular crests 10a and annular troughs 10b are abutted on each other and the both corrugated tube ends are connected by being covered with and held circumferentially by a heat shrinkable tube 3 shrunk by heat. In the case of connecting the corrugated tubes alternately providing spiral crest parts and spiral trough parts, a waterproof agent is filled in the trough parts of the both corrugated tube ends. In the connecting method, the both corrugated tubes are inserted from and abutted on the both sides of the heat shrinkable tube not shrunk yet, a balloon body arranged inside the abutment part is inflated, the corrugated tubes are centered to accord the axes, and then the tubes are heat-shrunk and connected together.
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