| 摘要 |
PROBLEM TO BE SOLVED: To provide a metal flexible pipe joint suitable to a hydrogen gas pipe and capable of suppressing the leakage of hydrogen gas. SOLUTION: In the metal flexible pipe joint 100, a nut 3 is threaded to a joint body 1 having a depth wall 10 inside, a retainer 6 is provided at the end of the nut 3, a valley portion 81a and a ridge portion 81b of a corrugated pipe 81 are protruded from the end of a metal flexible pipe 8 to be inserted through the nut 3, a plurality of expandable or shrinkable pawl portions 62 of the retainer 6 are engaged with a valley portion 81c at the end of the metal flexible pipe 8, the retainer is guided from a tapered inner face 21 for the valley portion 81a at the end of the metal flexible pipe 8 to abut on a tapered outer face 11, and the ridge portion 81b adjacent to the valley portion 81a is squashed against a seal member 9 in an annular recessed portion 12 of the joint body 1 with the valley portion 81a abutting thereon as a supporting point so as to be put into the seal member 9. COPYRIGHT: (C)2007,JPO&INPIT
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