| 摘要 |
PROBLEM TO BE SOLVED: To provide an easy-to-handle hermetic plug device that can tightly plug a branch port provided on a side face of a fluid pipe and can facilitate an operation.SOLUTION: A pressing member 6 has a female screw part 62 penetrating through a top plate part and screwed with a male screw part 41, and an outer cylinder part 63 arranged at a rear part of a seal member 20. A body member 7 has an inner cylinder part 72 fitted with the outer cylinder part 63, a protrusion part 73 projecting on an outer peripheral side from the inner cylinder part 72 and arranged at a front part of the seal member 20, and a detachment prevention part 74 provided in front of the seal member 20. A guide protrusion 54 extending diagonally to an axial direction AD is provided on an extension member 5, and a guide groove fitted with the protrusion is provided on the detachment prevention part 74. The detachment prevention part 74 is displaced between a position, at which it can be locked with a pipe inner face of the branch port and a position, at which it is not locked with the pipe inner face, according to relative axial movement of the extension member 5 to the body member 7. |
