Electrical terminal connection, especially for connecting an outer conductor of a coaxial cable

1. An electrical terminal connection, for connecting an outer conductor of a coaxial cable, comprising

a housing including a wall; a plug-in elements which has a sleeve attachment for accommodating and connecting an electrical conductor of the coaxial cable, the housing wall having an accommodating opening, which interacts with the plug-in element thereof,

the plug-in element being pressed into the accommodating opening for the purpose of making an electrical connection to the housing wall, wherein the electrical terminal connection is designed to have two stages,

the plug-in element having at least two plug-in sections which are formed such that they are offset in the plug-in direction,

both the plug-in section which leads in the plug-in direction and the plug-in section which lags in the plug-in direction each being provided with a knurl on their outer circumference,

a second accommodating opening having a first and a second accommodating section which lie such that they are offset in the plug-in direction of the plug-in element, and

the two plug-in sections and the two accommodating sections, complementary thereto, being designed to have differing cross-sectional sizes, the radial or outer dimension of the plug-in sections, which are provided with the knurl, being slightly greater than the radial or outer dimension of the accommodating sections respectively interacting therewith.

2. The terminal connection as claimed in claim 1 , wherein the leading plug-in section has a cross-sectional dimension in a circumferential region transverse to the plug-in direction of the plug-in element that is smaller than a corresponding cross-sectional dimension of the lagging plug-in section.

3. The terminal connection as claimed in claim 1 , wherein the cross-sectional size of the leading plug-in section is smaller than the cross-sectional size of the lagging plug-in section in the entire circumferential region and transverse to the plug-in direction of the plug-in element.

4. The terminal connection as claimed in claim 2 , wherein the first accommodating section of the accommodating opening has a dimension in a circumferential region that is smaller than a corresponding dimension in the offset, second accommodating section.

5. The terminal connection as claimed in claim 3 , wherein the first accommodating section of the accommodating opening is smaller than the offset, second accommodating section in the entire circumferential region corresponding to the circumferential region of the plug-in section interacting therewith.

6. The terminal connection as claimed in claim 1 , wherein the inner surfaces of the accommodating sections of the accommodating opening are designed to have no knurls.

7. The terminal connection as claimed in claim 1 , wherein, of the outer circumferential surfaces of a plug-in section which each interact in pairs and the inner surface of the associated accommodating section of the accommodating opening, in each case only one section is formed with a knurl and the other surface interacting therewith is formed without a knurl.

8. The terminal connection as claimed in claim 1 , wherein the knurl is in the form of an axial knurl or in the form of a transverse knurl.

9. The terminal connection as claimed in claim 1 , wherein the knurl is provided with leading flattened sections in the plug-in direction.

10. The terminal connection as claimed in claim 1 , wherein a circumferential annular groove arranged therebetween is provided between the two outer circumferential surfaces of the plug-in sections.

11. The terminal connection as claimed in claim 1 , wherein a surface, which leads in the plug-in direction, of the lagging plug-in section of the plug-in element acts as a stop shoulder which interacts with a corresponding stop surface between the first and second accommodating section of the accommodating opening.

12. The terminal connection as claimed in claim 1 , wherein the entire axial plug-in height of the plug-in attachment corresponds to the axial accommodating height of the accommodating opening such that, once the pressing-in procedure has been carried out, the plug-in insert which has been pressed into the accommodating opening ends flush with the housing wall both on the inside and on the outside.

13. The terminal connection as claimed in claim 1 , wherein the cross-sectional shape of the plug-in sections of the plug-in element and the accommodating sections, interacting therewith, of the accommodating opening are circular or n-polygonal.

14. The terminal connection as claimed in claim 1 , wherein the plug-in element or housing wall provided with the knurl is made of a harder material than the housing wall or plug-in element interacting therewith.

15. The terminal connection as claimed in claim 1 , wherein the sleeve attachment of the of plug-in element is arranged axially, counter to the plug-in direction, on the lagging plug-in section for the purpose of connecting the coaxial cable.

16. The terminal connection as claimed in claim 1 , wherein the sleeve attachment of the plug-in element is arranged axially, in the plug-in direction, on the leading plug-in section for the purpose of connecting the coaxial cable.

17. The terminal connection as claimed in claim 1 , wherein a plurality of internal holes are formed on the plug-in element for the purpose of accommodating coaxial cable.