| 摘要 |
PROBLEM TO BE SOLVED: To reliably connect a corrugated pipe regardless of the size tolerance of the corrugated pipe of a flexible tube and besides to prevent the occurrence of pull-out after connection. SOLUTION: In a flexible tube 1, a corrugated pipe 2 is insertable toward the internal parts of a push ring 25, a retainer 45, and a cylindrical body 11 from the rear end of the push ring 25. The retainer 45 is elastically expanded by the crest part 4 of the corrugated pipe 2 when the crest part 4 passes through the retainer, and the retainer is engaged with both the corrugated pipe 2 inserted therein and the press ring 25. The inner peripheral surface of the retainer 45 forms a taper surface 53 gradually decreased in a diameter with the progress of the cylindrical body 11 toward the deep side.
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