Quick coupling device for coupling a tube to a rigid endpiece

A quick coupling device for coupling a tube to a rigid endpiece including a female part secured to said rigid endpiece, and in which a staged bore is provided that presents at least a section of large diameter having an end remote from said rigid endpiece, said female part being permanently provided with an axial latch, radially movable between two transverse positions with respect to said bore, and located at said end of said section, said quick coupling device further comprising a banding ring loose fitted in the large diameter section and having at least one internal projection for biting into an outside surface of the tube, when inserted into the female part, the axial latch in one of its two positions opposing axial displacement of the banding ring away from the rigid endpiece and, in its other position, releasing the banding ring, and further wherein said banding ring includes a cage, a split ring mounted in said cage, said cage cooperating with the split ring via a conical contact surface that diverges towards the rigid endpiece.