PIPE CONNECTION STRUCTURE AND SINK DRAINAGE STRUCTURE WITH THE PIPE CONNECTION STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a pipe connection structure that allows simpler connection than a cap nut-type connection and offers stable sealability even when external force acts on the pipe.;SOLUTION: A pipe connection structure connects a connecting pipe 1 to a socket 4 by inserting a pipe end of the connecting pipe 1 into the socket 4 having a flange and then using a lock member 5 having a hook part 5c that is elastically hung on the flange 4b of the socket 4 from the connecting pipe 1 side. The connecting pipe 1 has annular grooves 1a on the outer peripheral surface, as well as a seal ring 6 fitted on one of the annular grooves located inside the socket 4, and an arch-shaped stopper ring 7 fitted on the other annular groove 1a exposed at an insertion port 4a of the socket 4. When pipes are connected by the lock member 5, an outer edge part 7b of the stopper ring 7 is sandwiched between perpendicular edge surfaces 5d and 4c of the lock member 5 and the socket 4.;COPYRIGHT: (C)2016,JPO&INPIT