Coupling Half for an Electric Plug Comprising a Multi-Part, Rotatable Sleeve, as well as Electric Plug and Method

A method for coupling of a first coupling half (1) of an electric plug (2) with a second coupling half (3) of the electric plug (2), which comprises the following steps:

• providing a first coupling half (1) comprising a housing (4) and a sleeve (8) that is threadlessly rotatably arranged thereon and said sleeve (8) comprises an outer sleeve (9) and an inner sleeve (15) that is separate from the outer sleeve (9),
• providing a second coupling half (3);
• axial slipping of the first coupling half (1) over the second coupling half (3) so that the sleeve (8) of the first coupling half (1) axially overlaps with a front part (29) of a housing (32) of the second coupling half (3);
• coupling a coupling structure (18) formed on an inner sleeve (15) of the sleeve (8) and comprising a counter coupling structure (19, 19′) formed on an outer side (28) of the front part (29),
• rotating an outer sleeve (9) of the sleeve (8) about a longitudinal axis (A) of the first coupling half (1) and thereby rotating the inner sleeve (15) along with the outer sleeve (9);
• causing an axial shifting of the inner sleeve (15) due to the axial relative movement between the coupling structure (18) and the counter coupling structure (19, 19′) engaging the coupling structure (18), wherein the axial relative movement of the coupling structure (18) and the counter coupling structure (19, 19′) is generated by the rotating of the sleeve (8);
• reaching a coupled final position of the coupling halves (1, 3), when the inner sleeve (15) has reached an axial final position.