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    • 8. 发明专利
    • EXPANSION JOINT FOR TRANSPORTING FLUID
    • JP2001263565A
    • 2001-09-26
    • JP2000080033
    • 2000-03-22
    • SUIDO GIJUTSU KAIHATSU KIKO KK
    • YONEYAMA HIDEKITOTSUGI AKITO
    • F16L27/12F16L25/12
    • PROBLEM TO BE SOLVED: To make connecting work efficiently easily performable of a socket cylinder part and an insertion cylinder part without using a particular jig and attain reduction of a cost of manufacture. SOLUTION: A stopper part 6 protruded to the outward in a diametric direction is provided in an external peripheral surface of an insertion cylinder part 5 insertion connected to a socket cylinder part 1, a coming-off lock part 1C impeding sliding to out of a range in at least an extraction side of a relative sliding range in a direction of the cylinder axial center of both the cylinder parts 1, 5, by abutting to the stopper part 6 of the insertion cylinder part 5 from a direction X of the cylinder axial center, is formed in an internal peripheral surface side of the socket cylinder part 1, the stopper part 6 is constituted by protrusion parts 6A to 6F formed in a plurality of parts in a peripheral direction of the insertion cylinder part 5, also recessed parts 10A to 10F for mounting/demounting to permit passing movement of each protrusion part 6A to 6F in its direction X of the cylinder axial center, only when both the cylinder parts 1, 5 are placed in a specific phase, are formed in the coming-off lock part 1C of the socket cylinder part 1.