Patent ID: 6722703
Filing Date: 2004-04-20
Classification: F16L

Abstract:
A quick connector to be connected with a pipe including an inserting end portion provided with an annular engagement projection, and having a function to verify complete connection with the pipe, comprising:a tubular connector housing provided with a tube connecting portion on one axial side thereof and a retainer holding portion having at least one engagement window on an opposite axial side thereof, an annular or a generally annular retainer configured so that the annular engagement projection of the pipe snap-engages with the retainer when the pipe inserting potion of the pipe is inserted in the connector housing, and fitted to the retainer holding portion to engage with the engagement window, a checker having a checker body configured so as to be along or generally along an outer peripheral surface of the connector housing and provided with a pull-out portion, and at least one engagement portion integrally formed on the checker body, the checker being fitted or mounted on an outer peripheral surface of the connector housing in locking relation in a pull-out direction by engagement between the engagement portion and the engagement window, the engagement portion of the checker body being configured so as to be pushed by the annular engagement projection, and thereby deformed and moved to allow the checker to be pulled out when snap-engagement between the annular engagement projection and the retainer brings about complete connection between the pipe and the quick connector, the connector housing or the outer peripheral surface of the connector housing being provided integrally with a pair of axial movement preventive means projecting radially outwardly in axially spaced relation with one another to restrain axial movement of the checker body, the axial movement preventive means respectively having one circumferential end portion and the other circumferential end portion circumferentially spaced a proper distance from the one circumferential end portion, and the checker body being fitted in an axial space defined between a pair of the axial movement preventive means so as to be restrained to move toward one axial side and an opposite axial side.