| 摘要 |
PROBLEM TO BE SOLVED: To provide a pipe joint for a flexible plastic resin pipe easily manufacturable, allowing a pipe connection operation to be executed in a single operation, capable of preventing coming-off or looseness of the pipe during service life, and allowing sure watertight connection. SOLUTION: On an inner core part 1T having O-rings 6 of a joint body 1A, a tapered ring 7 and a fixed ring 8 having alignment tapered surfaces t7 and t8 are arranged on the front side in a layered form, and a lock ring 9 is arranged on the front surface of a diameter-reducing auxiliary ring 10 in an inward projecting form on the rear side, a pipe 13 is inserted in and put on the outer periphery of the inner core part 1T from a cap 5 with the cap 5 having a pipe insertion hole H5 temporarily screwed to the joint body, and by screwing advance of the cap 5 to the joint body 1A by manual rotation, the pipe 13 is watertightly and undetachably fastened to the outer peripheral surface of the pipe 13 by cutting-in lock action of the lock ring 9 and diameter-reducing pressing action of the fixed ring 8 by the tapered ring 7. COPYRIGHT: (C)2009,JPO&INPIT
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