Connection device for use with a corrugated tube

A connection apparatus in combination with an end section of a corrugated tube, the connection apparatus having a pre-assembled state and a coupled state, the connection apparatus comprising:

• a coupling part comprising an outside jacket with an outside jacket surface, an inner holding device connecting to and spaced radially inwardly from the outside jacket and defining a gap therebetween,
• a sealing sleeve sized to fit over the end section of the corrugated tube and having a limit stop, and
• an insertion part sized for insertion into the coupling part and sized for receiving the sealing sleeve, the insertion part comprising an outside jacket having an outside jacket surface, the insertion part further comprising a plurality of protruding latching cams extending radially outwardly from said outside jacket surface and circumferentially spaced with respect to one another,
• wherein the coupling part further comprises a plurality of latching arms extending outwardly from the coupling part's outside jacket surface, the plurality of latching arms radially outwardly elastically deflectable from an undeflected position and are positioned corresponding to the plurality of protruding latching cams on the insertion part, whereby each latching arm of the plurality of latching arms elastically deflects radially outwardly as said latching arm runs over a respective associated protruding latching cam of the plurality of protruding latching cams during an axial insertion of the insertion part into the coupling part and upon reaching a coupled state, each latching arm passes the respective protruding latching cam and returns inwardly to the undeflected position,
• wherein when the connection apparatus is in the pre-assembled state, the end section of the corrugated tube can be guided through the inner holding device in a direction towards the insertion part, with the inner holding device providing elastically resilient radial movements allowing the end section to pass thereby up to the limit stop in the sealing sleeve seated in an interior of the insertion part, which sleeve forms an axial flow passage,
• and wherein when the connection apparatus is in the coupled state, the inner holding device of the coupling part protrudes axially into a facing opening of the insertion part and the elastically resilient radial movements of the inner holding device are blocked preventing withdrawal of the end section of the corrugated tube, the inner holding device being engaged with a facing axial face side of the sealing sleeve thereby axially compressing said sealing sleeve.