Tube end rust prevention structure of expansion and contraction flexibility fitting

摘要

(57) Abstract Objective At the same time with simple configuration the expansion and contraction flexibility tube which does not have the apprehension of falling offRust prevention structure of the coupling is offered. Constitution As canning the internal surface of the conjugation tube of the non screw, the tubeOr in the peripheral face of tube end side of the conjugation tube which is interposed to main internal of the couplingFurthermore the tubed retainer outer fitting is installed from on the aforementioned enveloping layer,It projects to the inside diameter direction which is provided on Tip surface side of the said retainerThrough the spring with the flange and the end face of the conjugation tube, the edgeDistribution facilities to do the surface canning component, with the attaching power of the aforementioned springJunction the end face canning component to end face side of the conjugation tube.