| 摘要 |
The invention relates to a plug-in coupling (1) having a positive coupling partner (2) that is inserted in a receiving opening (10) of a negative coupling partner (5) with its insertion end (3) first. The coupling partners have corresponding wall elements that engage with each other in a turn-lock manner, thereby ensuring a turn-lock relative engagement position of rotation (7) of the turn-lock wall elements (6) of the coupling partners in the inserted position. The aim of the invention is to allow to insert the coupling partner without visual contact. For this purpose, the insertion end (3), along practically the entire covering ends (8) of the outer periphery (13) thereof, is provided with substantially concave insertion recesses (12) which correspond to the turn-lock wall elements (6) of both coupling partners and/or to the insertion recesses (12) of the respective other coupling partner in terms of number, arrangement and geometry in such a manner that they allow a restricted guidance that aligns at least one coupling partner, when the latter is inserted, in the sense of a turn-lock engagement position of rotation of the coupling partners relative to one another. |
