Patent ID: 7401820

Claim:
A connector mounting structure, comprising: a fluid piping equipment provided with a connection hole, a retainer mounted on a retainer holding portion formed in a vicinity of an opening of the connection hole and held in an engaging position by the retainer holding portion, the retainer having a pair of engaging arms and a coupling portion connecting the pair of engaging arms, a connector inserted into the connection hole, the connector being prevented from dropping out of the connection hole by the retainer, the connector thereby being mounted to the fluid piping equipment, wherein the connector comprises: a connecting portion having a cylindrical seal portion inserted into the connection hole and sealed with respect to the connection hole by a seal member, and a flange stop portion formed on one end of the seal portion in an axial direction of the connecting portion and engaged with the pair of engaging arms of the retainer in locked relation, and a tube fitting portion formed on one end of the connecting portion and extending at an angle from the axial direction, wherein a positioning means is disposed between the connecting portion of the connector and the fluid piping equipment, the positioning means comprising a first engaging portion provided on the connecting portion of the connector and a second engaging portion provided on the fluid piping equipment, wherein the positioning means positions the connecting portion of the connector in a circumferential direction so as not to rotate relative to the connection hole by engaging the first engaging portion with the second engaging portion in the circumferential direction, the positioning means having a mounting angle adjusting function capable of positioning the connecting portion in the circumferential direction selectively at any one of a number of mounting angular positions relative to the connection hole, wherein an annular surface on the other end of the stop portion in the axial direction is formed in a taper shape tapered toward the other end in the axial direction, and is formed so as to press and widen an interval between the pair of engaging arms when the seal portion is inserted into the connection hole, wherein the pair of engaging arms of the retainer snap engage with an annular surface on one end of the stop portion in the axial direction when the stop portion passes through the engaging arms, and wherein the retainer is mounted on the retainer holding portion so as to be movable between the engaging position and a release position in which the pair of engaging arms are widened to such an extent that the engaging arms are in a non-engaging state with the stop portion, and so as to be held in the release position when the retainer is moved into the release position.