An axial tube connector assembly comprising a female coupling (200) to be axially connected to a male coupling (300), the female part including a main body (204) defining a fluid passage (201) therethrough and a upwardly spring-biased clip member (250) coupled to the main body and moveable perpendicularly to the main axis and fluid passage of the connector between an upward locking position for the male part and a downward decoupling position in which the male member can be removed, with the clip member including two opposing arms (260) which extend downwardly and into the female part main housing on either side of the space which receives the male part, each arm carrying a further arm (258) which extends in a plane perpendicular to the movement direction of the clip and including the main axis defining the coupling direction and the fluid passage, which arms are directed inwardly toward the main axis and thus toward the male part and form an angle of 45 degrees with said axis. The arms (258) are flexible and allow introduction of the male part, and engage and lock the latter via cooperation with a receiving groove (308) to establish the coupling. For decoupling the clip is pushed downward inside the housing, which lets arms (258) slide out of groove (308) thus allowing pulling the male part out of the female part.L'invention concerne un ensemble de raccord de tube axial, comprenant un accouplement femelle (200) destiné à être relié axialement à un accouplement mâle (300), la partie femelle comprenant un corps principal (204) définissant un passage de fluide (201) à travers celui-ci et un élément de fixation (250) sollicité par ressort vers le haut accouplé au corps principal et mobile, perpendiculairement à l'axe principal et au passage de fluide du raccord entre une position, vers le haut, de verrouillage pour la partie mâle et une position, vers le bas, de désaccouplement dans laquelle l'élément mâle peut être enlevé, l'élément de fixation comprenant deux bras op
