Coupling device for media-conducting lines

A coupling device for connecting media-conducting lines, the coupling device comprising:

• a one-part or multi-part first coupling section, wherein the first coupling section is an outer coupling section, the first coupling section having:
• a circumferential groove formed into a radially outer surface of a circumferential wall of the first coupling section, the circumferential groove having
• a bottom wall forming a radial bottom of the circumferential groove;
• a slot-shaped opening extending through a first portion of the bottom wall of the circumferential groove and opening into an interior of the first coupling section;
• at least one support groove formed in the bottom wall of the circumferential groove adjacent to and spaced away from the slot-shaped opening;
• a locking element embodied as a unitary one piece component, comprising:
• a first locking arc section formed as a first arcuate spring arm extending in a circumferential direction of the locking element;
• a second locking arc section formed as a second arcuate spring arm extending in the circumferential direction of the locking element;
• at least one connecting section arranged between and joining a first end of the first locking arc section to a first end of the second locking arc section;
• the locking element further comprising:
• a first arcuate circumferentially extending spring arm connected to a second end of the first locking arc section and arranged radially outward from the first locking arc section;
• a second arcuate circumferentially extending spring arm connected to a second end of the second locking arc section and arranged radially outward from the second locking arc section;
• wherein the first arcuate circumferentially extending spring arm and the second arcuate circumferentially extending spring arm further comprise
• a support element formed as a radially inwardly projecting wall projecting radially inwardly from at least one of the arcuate circumferentially extending spring arms and configured to dip into the at least one support groove to absorb pull-out forces acting on the locking element and transmit them to the one-part or multi-part first coupling section;
• wherein, when in the installed state of the locking element, the first arcuate circumferentially extending spring arm and the second arcuate circumferentially extending spring arm are received into and resting in the circumferential groove of the first coupling section, the arcuate circumferentially extending spring arms extending in a circumferential direction in the circumferential groove on the circumferential outer wall of the first coupling section, with the support element received into the at least one support groove.