| 摘要 |
PROBLEM TO BE SOLVED: To provide pipe fittings in which the depth of insertion of a pipe can be adjusted. SOLUTION: The pipe fitting is provided with a fitting body 2, a clamp ring 5 with a slit 51, a diameter-expanding piece 6, and a regulation sleeve 10 which can be manually rotated. The fitting body 2 has an insertion-cylindrical part 3 which is inserted to the end of a pipe 1 to be connected, and the clamp ring 5 is used for tightening the end of the pipe 1, which is externally engaged with the insertion-cylindrical part 3, by a resilient tightening force. Then the diameter-expanding piece 6 is inserted to the slit 51 so that it can be detached and that the diameter of the clamp ring 5 can be expanded against the resilient force of the clamp ring 5. Then the regulation sleeve 10 is externally engaged with the clamp ring 5 in order to control the jumping action of the diameter-expanding piece 6 in the outer diameter direction, and has a concavity for escape, which allows jumping action, at a part of the inner peripheral surface 17. Furthermore, the pipe fitting is provided with a means K of detecting the insertion of the pipe which allows rotation in an integral form of the clamp ring 5 and the regulation sleeve 10 in a state that the pipe is not inserted, and which allows the manual rotation of only the regulation sleeve 10 by preventing the rotation of the clamp ring 5 when the pipe is inserted. COPYRIGHT: (C)2007,JPO&INPIT
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