QUICK DISCONNECT COUPLING

摘要

PROBLEM TO BE SOLVED: To provide an easily operable quick disconnect coupling capable of attaining an arrangement structure for a collet part and a seal part capable of enhancing the seal property and preventing the radially outward extension of a cylindrical body, a more compact form and the like. SOLUTION: This quick disconnection coupling 1 comprises a cylindrical body 2 attachably and detachably connected to the circumferential part 91 of a pipe 9 to be connected and having an inner passage 2e allowed to communicate with the hole passage 92 of the pipe 9; a collet 3c for fixing and retaining the circumferential part 91 of the pipe 9; a seal part 3a for sealing the circumferential part 91 in an airtight state; an energization part 4 for axially energizing the collet 3c and the seal part 3a; and an operation part 9 for retaining and releasing the connecting state of the circumferential part 91 of the pipe 9 to the cylindrical body 2. The cylindrical body 2 is linearly arranged along the axial direction P in the order of the seal part 3a and the collect part 3c from the side opposed to the opening end 90 of the pipe 9.