Quick connection system and method for implementation

A system (1) for quick connection between a female end piece (2) provided with a U-shaped locking clip (3) and a male end piece (4) designed to be fitted into the female end piece (2), the wall of the female end piece (2) having opposite slits (2′) through which the arms (3′, 3″) of the U protrude into the passage of said end piece (2) and the wall of the male end piece (4) having an outer groove (4′) designed to receive, with locking, said arms (3′, 3″) of the clip (3) in a final fitting state of the male end piece (4) in the female end piece (2), locked by said clip (3), a free section (5, 5′) respectively extending each arm (3′, 3″) of the U in the direction of the other arm (3″, 3′), while closing the U approximately by working together, and said arms (3′, 3″) being separated elastically by the male end piece (4) during its insertion into the female end piece (2) until the clip (3) is received in the groove (4′) in the final fitted state of the two end pieces (2 and 4), the clip (3) then being approximately in a resting configuration, with the arms (3′, 3″) of the U not forced apart,

• quick connection system (1) further comprising an added part (6) that forms a removable prestressed element for the clip (3) and that comprises housing sites (7, 7′, 7″) able and intended to work by engagement with the two free sections (5, 5′) in a first configuration corresponding to the resting configuration of the clip (3) and in at least a second prestressed configuration of the clip (3) in which the arms (3′, 3″) of the U are more spaced apart than in the resting configuration but less spaced apart than during the passage of the maximum outer section of the male end piece (4) during insertion into the female end piece (2), the housing sites (7, 7′, 7″) being arranged on the added prestressed part (6) in such a way that during the insertion of the male end piece (4), and before reaching the final fitted state, the clip (3) prestressed by said part (6) is automatically released from the prestressed configuration and can return to the resting configuration.