| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint structure improved in sealing property of a bellows pipe. SOLUTION: This joint structure of a pipe end portion comprises a cylindrical inner seal portion 22 composed of an elastic material and kept into contact with an inner peripheral face of the pipe 10, a cylindrical outer seal portion 21 composed of the elastic material, connected with an outer peripheral face of the pipe 10 and connected with the inner seal portion 22 in a state of covering an edge of the pipe 10 at axial one end, and a fastening tool 30 for holding and fastening the pipe 10 and the inner and outer seal portions 22, 21 from radial inner and outer both sides. Contact surfaces with the pipe 10, of the outer seal portion 21 and/or the inner seal portion 22 have the wave shape axially alternately having recessed portions 26 and projecting portions 27. COPYRIGHT: (C)2007,JPO&INPIT
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