Method for connecting a connection section of a tube for fluid or gaseous media with a plug connector

A method for connecting a connection section (33) of a hose (3) for liquid or gaseous media with a plug-in connector (4), wherein the plug-in connector (4) comprises a connector body (6), which connector body (6) has a ring space (22), which is formed by a sleeve-shaped first mantle section (12) of the plug-in connector (4), which section surrounds a central longitudinal axis (9) in ring shape, in cross-section, and a sleeve-shaped second mantle section (15) of the plug-in connector (4), which section surrounds the central longitudinal axis (9) in ring shape, in cross-section, wherein the first mantle section (12) is surrounded by the second mantle section (15), and the mantle sections (12, 15) are open toward one another at a second end section (24), whereby a hose accommodation side (25) of the connector body (6) is formed, wherein

• in a first method step, the connection section (33) of the hose (3) is pushed into the ring space (22) of the plug-in connector (4) from the hose accommodation side (25) of the connector body (6), and positioned there;
• in a second method step, a pressing tool (50) deforms the first mantle section (12) of the connector body (6), with simultaneous deformation of the connection section (33) of the hose (3), which section lies between the first mantle section (12) and the second mantle section (15), in the direction toward the second mantle section (15), and thereby the connection section (33) of the hose (3) is clamped between the first mantle section (12) and the second mantle section (15);
• wherein
• the second mantle section (15) has a narrowing (39) at a front edge (38) of the hose accommodation side (25), whereby it is ensured that the connection section (33) of the hose (3) is freely deformed in the direction of the second mantle section (15) during the pressing process, at least in the region of the ring space (22) that is at a distance from the front edge (38), before the connection section (33) of the hose (3) comes to lie against the second mantle section (15);
• wherein
• the position of a mantle surface (19) of the second mantle section (15), which surface lies on the outside, is detected by means of a distance measurement device (52), at at least two measurement points that lie axially apart from one another, and the position of the outer mantle surface (36) of the hose (3) and/or the position of a mantle surface (14) of the first mantle section (12), which surface lies on the outside, is detected.