Round plug connector comprising a shield connection

Abstract

A round plug connector for releasably connecting lines has at least one housing element for receiving at least one insulating body and at least one locking element for releasably connecting to a mating plug connector. The housing element receives at least one circumferential spring element, and the spring element is made of an electrically conductive material in order to attach to an electromagnetic shielding, wherein the spring element is held in a circumferential recess of the housing element and has at least two bulges facing radially outwards.

Claims

1.-9. (canceled)

10. A round plug connector (1) for detachably connecting lines, comprising: a housing element (2) for receiving an insulating body (3) and a locking element (4) for detachably connecting to a mating plug connector (5), wherein the housing element (2) receives a circumferential spring element (5), and wherein the spring element (5) is made of an electrically conductive material for connecting an electromagnetic shield, and wherein the spring element (5) is held in a circumferential recess (6) of the housing element (2) and comprises at least two radially outwardly pointing bulges (7).

11. The round plug connector (1) as claimed in claim 10, wherein the spring element (5) comprises a cutout (9), wherein the cutout (9) allows a reduction of a diameter of the spring element (5) and thereby simplifies a plugging process.

12. The round plug connector (1) as claimed in claim 10, wherein the bulges (7) each comprise a radially inwardly pointing indentation (8).

13. The round plug connector (1) as claimed in claim 12, wherein the indentation (8) is arranged substantially centrally of each bulge (7).

14. The round plug connector (1) as claimed in claim 10, wherein the bulges (7) on the spring element (5) are arranged at a distance of from 100° to 140° to one another.

15. The round plug connector (1) as claimed in claim 10, wherein the bulges (7) and indentation (8) alternate along at least half a length of the spring element (5).

16. The round plug connector (1) as claimed in claim 12, wherein the bulges (7) and the indentation (8) ensure that, during a process of plugging the round plug connector (1) to a mating plug connector, the spring element (5) is clamped with frictional engagement between the round plug connector (1) and the mating plug connector.

17. The round plug connector (1) as claimed in claim 10, wherein the recess (6) is arranged behind the locking element (4) as viewed in a plug-in direction (SR).

18. The round plug connector (1) as claimed in claim 10, wherein the locking element (4) is designed for a locking mechanism of a “push-pull” locking type.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0017] An exemplary embodiment of the invention is shown in the drawings and is explained in more detail below. In the drawings:

[0018] FIG. 1 shows a perspective view of a round plug connector;

[0019] FIG. 2 shows a perspective view of a spring element for shield connection;

[0020] FIG. 3 shows a partial section focusing on the shield connection with a spring element;

[0021] FIG. 4 shows a perspective view of a round plug connector with an alternative spring element;

[0022] FIG. 5 shows a perspective view of an alternative embodiment of a spring element; and

[0023] FIG. 6 shows a perspective view of an alternative spring element for shield connection.

DETAILED DESCRIPTION

[0024] The figures contain partially simplified, schematic representations. In part, identical reference signs are used for like, but possibly not identical elements. Different views of like elements may be scaled differently. Directional indications such as “top”, “bottom”, “left”, “right”, “front” and “back” refer to the various representations and may vary in respect of the elements shown.

[0025] FIG. 1 shows the plug-in region of a round plug connector 1 according to the invention, wherein the round plug connector 1 has at least two housing elements 2 and 2′. Here, the housing element 2 receives an insulating body 3. Recesses in the housing element 2 receive the locking elements 4 along the circumference of the housing element 2. The locking elements 4 are formed as detent hooks and are provided for a push-pull locking mechanism. The spring element 5 for shield connection, also received by the housing element 2, can be seen. The spring element 5 is located in a recess 6 which is formed as a circumferential groove. The spring element 5 is secured in the axial direction by this recess 6.

[0026] FIG. 2 shows the spring element 5 according to the invention, wherein the design is clearly illustrated. The spring element 5 has three bulges 7, which each have an indentation 8 in their middle. The bulges 7 extend beyond the outer diameter d.sub.A of the spring element 5. The indentations 8 are formed in the middle of the bulges 7 and, at their low point, reduce the diameter to at least the outer diameter d.sub.A or there beyond. For manufacturing purposes and assembly purposes, the spring element 5 has a cutout 9. In addition, the cutout 9 can ensure a temporary yielding movement during the plugging process, whereby the plugging process between round plug connector 1 and mating plug connector is simplified. It can also be seen that the bulges 7 are arranged substantially at positions which would be displayed by a virtual, equilateral triangle within the spring element. In the shown embodiment the indentations 8 can be used as corner points of the virtual triangle.

[0027] FIG. 3 shows a round plug connector 1 in a front view, as seen against the plug-in direction R.sub.S. Here, the operating principle of the improved spring element 5 for shield transfer is clear. The spring element 5 inserted into a recess 6 is fundamentally in contact with the housing element 2, wherein the bulges 7 protrude beyond the depth of the recess 6 embodied as a circumferential groove. A mating plug connector fixed with the locking element 4 on the round plug connector 1 presses the bulges 7 in the direction of the center point of the round plug connector 1. The bulges 7 thus contact the mating plug connector, and the rest of the spring element 5, in particular the indentations 8, is pressed against the housing element 2 by the resulting force acting on the bulges 7, whereby a reliable and permanent contacting is provided and a likewise reliable shield transfer is achieved.

[0028] A comparable or identical round plug connector 1 is shown in FIGS. 4, 5 and 6 and receives an alternative embodiment of the spring element 5′ according to the invention in the recess 6 embodied as a circumferential groove. The spring element 5′ performs substantially the same function as the spring element 5. Here, however, the bulges 7 and the indentations 8 alternate along the entire circumference. Both embodiments of the spring element 5 and 5′ provide reliable contacting with a mating plug connector by way of the bulges 7 which exceed the averaged outer diameter d.sub.A. The occurring forces against the bulges 7 in the plugged state of the round plug connector 1 with a mating plug connector force the indentations 8 to a diameter less than or equal to the averaged inner diameter d.sub.1, whereby the contacting of the round plug connector 1 is ensured. Due to this clamping effect, the electrical shield connection is always ensured, even during operation of a work machine with a high occurrence of vibrations.

[0029] Even though various aspects or features of the invention are shown in each case in combination in the figures, it is apparent to a person skilled in the art—unless otherwise indicated—that the combinations shown and discussed are not the only possible ones. In particular, corresponding units or feature complexes from different exemplary embodiments may be interchanged with each other.

LIST OF REFERENCE SIGNS

[0030] 1 round plug connector [0031] 2 housing element [0032] 3 insulating body [0033] 4 locking element [0034] 5 spring element [0035] 6 recess [0036] 7 bulge [0037] 8 indentation [0038] 9 cutout [0039] R.sub.S plug-in direction [0040] d.sub.A outer diameter [0041] d.sub.1 inner diameter [0042] d averaged diameter