Patent ID: 7401818
Filing Date: 2008-07-22
Classification: F16L

Abstract:
1. A quick connector to be connected with a pipe including an inserting end portion provided with an annular engagement projection, the quick connector comprising: a tubular connector housing provided with a tube connecting portion on one axial side thereof and a retainer holding portion on an opposite axial side thereof, a retainer including a generally annular main body formed with a pipe engagement portion on one axial end portion thereof to snap-engage with the annular engagement projection of the pipe when the inserting end portion of the pipe is inserted in the connector housing, the main body having exactly one space for deformation extending through the entire axial length of the main body such that the main body is allowed to deform radially inward, the retainer being fitted in and held by the retainer holding portion, an engagement protrusion being integrally formed on an opposite axial side of an outer surface of the main body that is opposite the space for deformation so as to project radially outwardly, an engagement recess being formed so as to extend from an opposite axial end to one axial side of an inner peripheral surface of the retainer holding portion, and the engagement protrusion being fitted in the engagement recess in engagement relation circumferentially and radially inward with respect to the connector housing.