Pipe joint

A pipe joint comprising:

• a housing formed with an insertion hole into which a pipe including an annular spool is inserted;
• a retainer attached to a storage opening provided at an outer circumferential wall of the housing and movable from a releasing position to a locking position by being pressed in;
• a detection arm provided at the retainer, regulating pressing of the retainer by a regulating wall of the housing in a state in which the retainer is at the releasing position, and releasing the regulation by the regulating wall by bending toward an outer side in a radial direction of the housing;
• a pipe lock arm provided on a rear side in an insertion direction of the pipe compared to the detection arm in the retainer and facing, in a state in which the retainer is at the locking position, the spool of the pipe inserted at a predetermined position in the housing, in the insertion hole and on the rear side in the insertion direction;
• an inclined surface provided at the detection arm so as to be inclined with respect to the insertion direction of the pipe into the housing and converting a pressing force received from the spool of the pipe inserted into the housing, into a force toward the outer side in the radial direction;
• and
• a facing wall provided at the housing and facing the detection arm of the retainer at the releasing position, on the rear side in the insertion direction.