Patent ID: 8033575

Claim:
A quick connector comprising: a housing into which an end part, provided with an annular ridge, of a tube can be inserted; and a retainer capable of being inserted through an opening formed in the housing into the housing in a direction perpendicular to an axis of the housing to engage the annular ridge of the tube and to retain the tube in place in the housing, the retainer being movable from a releasing position to a retaining position where the retainer engages the annular ridge of the tube to connect the tube to the housing; wherein the retainer has a pair of arms extending in a U-shape so as to be in contact with diametrically opposite parts on the outer surface of the housing, locking hooks being formed on free ends of the arms, the housing being provided on its outer surface with stopping parts that engage the locking hooks when the retainer is held at the releasing position such that the retainer can move only in a direction in which the retainer is pressed into the housing, a distance between the pair of locking hooks being shorter than the outside diameter of the housing, and wherein the retainer is provided integrally with complete connection indicating members capable of being moved away from each other by the annular ridge so as to allow the retainer to be pressed into the housing when the annular ridge is moved into the housing beyond a position where the retainer and the annular ridge can be engaged, the housing being provided with a land that interferes with the complete connection indicating members in a state where the tube is incompletely inserted into the housing to prevent the retainer from being pressed into the housing.