| 摘要 |
Disclosed is a coupling structure for a pipe end having an enhanced sealing property for a bellows-type pipe. The coupling structure includes a tubular inner sealing portion formed from an elastic material and having an abutment surface against an inner circumference of the pipe, a tubular outer sealing portion formed from an elastic material and having an abutment surface against an outer circumference of the pipe, an axial end of the outer sealing portion being connected to the inner sealing portion so as to enclose the end face of the pipe is enclosed, and a fastener for holding and fastening the pipe and the inner and the outer sealing portions both from radially inwardly and outwardly. The abutment surfaces of the inner sealing portion and/or the outer sealing portion are/is fabricated into wave form having concave sections and convex sections arranged alternately in an axial direction.
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