Fluid connection unit

A fluid connection unit for connecting a fluid line to a fluid line port of a superordinate assembly, comprising:

• a base body comprising:
• a connection piece at one axial end of the base body for connection to the fluid line;
• a receiving portion at another axial end of the base body having a blocking protrusion, wherein the blocking protrusion extends radially outwardly from the base body;
• a retaining protrusion that extends radially outwardly from the base body and is positioned between the connection piece and the receiving portion;
• and
• a further receiving portion between the retaining protrusion and the connection piece;
• wherein the blocking protrusion is connected to the retaining protrusion via webs, and wherein a minimum radial extension of the webs is less than a minimum radial extension of the remaining blocking protrusion such that radially inner sides of the webs define a smaller inner diameter than a radially inner surface of the blocking protrusion;
• an insert element comprising a resilient rubbery material and comprising a plurality of radially outwardly projecting protrusions, wherein the insert element defines, in an interior of the insert element, an axial central connection opening, wherein the insert element is separate from the base body and is connectable to the base body such that the plurality of radially outwardly projecting protrusions are dimensioned to engage in a respective corresponding openings formed in the receiving portion between respective adjacent webs and project radially outwardly beyond the webs;
• wherein each radially outwardly projecting protrusion comprises:
• a respective blocking flank that extends, together with the radially outwardly projecting protrusion, outwardly in a substantially radial direction and that faces the axial end of the base body opposite the connection piece;
• a respective insertion flank that extends, together with the radially outwardly projecting protrusion, outwardly in a substantially radial direction and that faces the base body in a direction of the connection piece;
• and
• wherein the respective blocking flank is configured to abut against the blocking protrusion and the respective insertion flank is configured to abut against the retaining protrusion when the insert element is inserted into the receiving portion;
• and
• a clamping element configured to engage the receiving portion and, in a state engaged with the receiving portion, to come into contact with and apply a force to the plurality of radially outwardly projecting protrusions to radially inwardly bias an inner wall defining the axial central connection opening of the insert element, wherein the further receiving portion is configured to be engaged by the clamping element in an initial position of the clamping element, and wherein the retaining protrusion projects radially outwardly from the base body such that the clamping element is prevented from being displaced from engagement with the further receiving portion toward engagement with the receiving portion without changing a diameter of the clamping element and in the initial position of the clamping element.