CONTACTING SYSTEM

Abstract

The disclosure relates to a contact-making system for electromagnetically compatible high-current applications. The contact-making system includes a screw bushing, an actuating element and a clamping element. The clamping element includes at least one inner lateral surface and at least a first end face. The screw bushing includes a connecting thread on a first side of the screw bushing, for connection to a connecting geometry. The actuating element includes a counterpressure end face. An inner radius of the clamping element is reduced by means of a radial force. The actuating element is screwed to the first side of the screw bushing, where the radial force is applied to at least the first end face of the clamping element by screwing the actuating element to the screw bushing, and the counterpressure end face of the actuating element is brought into contact with a first end face of the clamping element.

Claims

1. A contacting system comprising: a screw-on sleeve, wherein the screw-on sleeve on a first side comprises a connection section, an actuating element and a clamping element, wherein the clamping element comprises at least an inner sheath surface and at least a first end surface, wherein the connection section comprises a connection thread and an actuating thread, wherein the screw-on sleeve on the first side of the screw-on sleeve comprises the connection thread for connecting to a connection geometry, wherein the connection thread is essentially arranged radially further out than the actuating thread for receiving the actuating element, and wherein the actuating element comprises a counter-pressure end surface, wherein an inner radius of the clamping element can be reduced at least in sections by means of a radial force, wherein the actuating element with the actuating thread can be screwed onto the first side of the screw-on sleeve and wherein, by screwing the actuating element onto the screw-on sleeve, the radial force can be applied to at least the first end surface of the clamping element while at least the counter-pressure end surface of the actuating element can be contacted with the first end surface of the clamping element.

2. The contacting system according to claim 1, wherein an at least partially stripped long-moulded part can be introduced into the contacting system in such a way that, when the actuating element is screwed onto the screw-on sleeve, the clamping element is pressed in such a way that an electrical contact with a shielding or with an element connected to the shielding is established by at least a part of the inner sheath surface of the clamping element.

3. The contacting system according to claim 1, wherein a second end surface and/or the first end surface of the clamping element comprises a chamfer.

4. The contacting system according to claim 1, wherein the clamping element comprises one of a completely continuous slit in a direction of a longitudinal axis of the contacting system, a plurality of slits distributed around a circumference, or no slits.

5. The contacting system according to claim 1, wherein the screw-on sleeve is one of a single piece with the clamping element or as a plurality of parts.

6. The contacting system according to claim 3, wherein the screw-on sleeve comprises a pressure end surface, wherein the clamping element can be introduced into the screw-on sleeve such that the pressure end surface of the screw-on sleeve contacts the second end surface of the clamping element and the counter-pressure end surface of the actuating element contacts the first end surface of the clamping element.

7. The contacting system according to claim 2, further comprising a support sleeve configured to be slid under the shielding of the long-moulded part and/or a crimp sleeve, the crimp sleeve being arranged between the shielding and the clamping element.

8. The contacting system according to claim 1, wherein the screw-on sleeve comprises a double nipple configuration.

9. A method of using a contacting system according to claim 1 for directly or indirectly contacting an exposed shielding of the long-moulded part.

10. The method according to claim 9, wherein the at least partially stripped long-moulded part is introduced into the contacting system such that a support sleeve can be arranged between at least one core of the long-moulded part and the shielding of the long-moulded part.

11. The method according to claim 9, wherein the clamping element presses the shielding against a support sleeve.

12. The method according to claim 9, wherein the long-moulded part is held in a non-positive manner and/or sealed by a pressure screw is screwed onto a second side of the screw-on sleeve and a seal element.

13. A screw joint system for screwing on a long-moulded part comprising a contacting system according to claim 1.

14. A method for dissipating electrical currents of a shielding of a long-moulded part comprising the steps of: a. providing a contacting system according to claim 1; b. partially exposing a shielding of the long-moulded part and introducing the long-moulded part into the contacting system; and c. screwing an actuating element of the contacting system onto a screw-on sleeve, wherein the actuating element acts on a clamping element such that the clamping element exerts a radial force onto the shielding of the long-moulded part or onto an element connected to the shielding, wherein, by screwing the actuating element, the clamping element is electrically contacted with the shielding or with an element connected to the shielding.

15. The method according to claim 14, wherein a support sleeve is placed under the shielding before the long-moulded part is introduced into the contacting system.

16. The method according to claim 14, wherein a crimp sleeve is placed on the shielding as the element connected to the shielding before the long-moulded part is introduced into the contacting system.

17. The method according to claim 14, wherein the screwing in of the actuating element for clamping the clamping element to the shielding or to an element connected to the shielding takes place before or after a connection of the long-moulded part to a consumer.

Description

DRAWINGS

[0077] In order that the disclosure may be well understood, there will now be described various forms thereof, given by way of example, reference being made to the accompanying drawings, in which:

[0078] FIG. 1 is an exploded perspective view of a contacting system according to the present disclosure;

[0079] FIG. 2 is a partially cut view of the assembled contacting system from FIG. 1;

[0080] FIG. 3 is a view of a further form of the contacting system according to the present disclosure;

[0081] FIG. 4 is a cross-sectional view of the contacting system from FIG. 3 with the actuating element unscrewed;

[0082] FIG. 5 is a cross-sectional view of the contacting system from FIG. 3 with a screwed-in actuating element;

[0083] FIG. 6 is a cross-sectional view of a long-moulded part with a support sleeve and a crimp sleeve—uncrimped according to the present disclosure;

[0084] FIG. 7 is a cross-sectional view of a long-moulded part with a support sleeve and crimp sleeve—crimped according to the present disclosure;

[0085] FIG. 8 is a schematic cross-sectional view of a long-moulded part with support sleeve and crimp sleeve in a screw-on sleeve with the actuating element unscrewed according to the present disclosure;

[0086] FIG. 9 is a schematic cross-sectional view of the long-moulded part from FIG. 8 in a screw-on sleeve with a screwed-in actuating element;

[0087] FIG. 10 is a further form of the contacting system according to the present disclosure; and

[0088] FIG. 11 is an exploded perspective view of the contacting system in accordance with FIG. 10.

[0089] The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way.

DETAILED DESCRIPTION

[0090] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features.

[0091] FIG. 1 shows an exploded view of a contacting system 10 with a screw-on sleeve 12, an actuating element 24 and a clamping element 50 according to the present disclosure. The clamping element 50 comprises a second end surface 56 and a first end surface 58 as well as an outer sheath 54 and an inner sheath surface 55. The clamping element 50 comprises a completely continuous slit 52 in the direction of the longitudinal axis 70 of the contacting system 10, wherein the slit 52 comprises a gap width 53 which allows the clamping element 50 to be compressed within the screw-on sleeve 12 with a radial force.

[0092] The actuating element 24 comprises a thread 25 with which it can be screwed into the screw-on sleeve 12. Furthermore, the actuating element 24 comprises a counter-pressure end surface 26, which interacts with the first end surface 58 of the clamping element 50 when assembled.

[0093] The screw-on sleeve 12 is designed as a double nipple so that it can accommodate a pressure screw 30 and a seal element 36 for sealing and fixing a long-moulded part. The screw-on sleeve 12 comprises a connection section 16 on a first side 11, which is limited on one side by a screw ring 17. With the connection section 16, the screw-on sleeve 12 can be introduced into a connection geometry (not shown here) or screwed in by means of the connection thread 18.

[0094] FIG. 2 shows a cut-in-half view of the contacting system 10 of FIG. 1 in assembled form. The clamping element 50 is introduced into the screw-on sleeve 12 and its second end surface 56 rests against the pressure end surface 32 of the screw-on sleeve 12. The actuating element 24 is screwed into the screw-on sleeve 12 and rests with the counter-pressure end surface 26 on the first end surface 58 of the clamping element 50. If the actuating element 24 is screwed in further, the clamping element 50 is applied a force to its end surfaces 56 and 58. Due to the conical embodiment of the end surfaces 56 and 58 and the pressure end surface 32 as well as the counter-pressure end surface 26, the applied force is deflected radially inwards and the first surface 56 slides at the pressure end surface 32 and the second surface 58 slides off at the counter-pressure end surface 26. The inner radius 51 of the clamping element 50 is thus reduced and the gap width 53 of the slit 52 is reduced.

[0095] FIG. 3 shows a view of a further embodiment of the contacting system 10. In the contacting system 10, a long-moulded part 100 with a shielding 102 and a sheath 104 is arranged.

[0096] FIG. 4 shows the contacting system 10 from FIG. 3 in a sectional view where the actuating element 24 is not screwed into the screw-on sleeve 12. The long-moulded part 100, which is threaded into the screw-on sleeve 12, comprises a section that is not indicated for the sake of clarity where the sheath 104 is removed. A support sleeve 60 is arranged under the stripped shielding 102. The clamping element 50 is arranged around the shielding 102. The clamping element 50 is also arranged in the area of the support sleeve 60.

[0097] FIG. 5 shows the contacting system 10 from FIG. 4, in which the actuating element 24 is screwed into the screw-on sleeve 12. If the actuating element 24 is tightened, the clamping element 50 deforms and exerts pressure on the shielding 102 with its inner sheath surface, which is not indicated herein. The support sleeve 60 does not cause large deformations of the shielding 102, but the radially inward force is used to clamp the shielding 102 between clamping element 50 and support sleeve 60. In one variation, before tightening the actuating element 24, the position of the contacting system 10 on the long-moulded part 100 can be changed. For example, FIG. 5 shows the final position of the actuated contacting system 10 on the long-moulded part 100 from the position at pre-assembly in FIG. 4. In one variation, it is not necessary to pay attention to an excess length of the stripped shielding 102. Another advantage is the actuation of the contacting system 10 independently of the actuation of the pressure screw 30 for sealing the long-moulded part 100.

[0098] FIG. 6 shows a long-moulded part 100 with a support sleeve 60 and a crimp sleeve 63. The support sleeve is placed under the stripped shielding 102, while the crimp sleeve 63 is placed above the stripped shielding 102.

[0099] FIG. 7 shows the crimped crimp sleeve 63, wherein the support sleeve 60 has also been crimped. Due to the plastic deformation of crimp sleeve 63 and support sleeve 60, these components remain permanently on the long-moulded part 100 and protect the shielding 102, particularly during frequent assembly and disassembly of the long-moulded part 100.

[0100] FIG. 8 and FIG. 9 show the long-moulded part 100 with support sleeve 60 and crimp sleeve 63 arranged in a contacting system 10, wherein FIG. 8 shows the unactuated contacting system 10 and FIG. 9 shows the actuated contacting system 10. The crimp sleeve 63 provides a wider tolerance range on which the clamping element 50 is positioned to dissipate electrical currents on the long-moulded part 100. Furthermore, the surface 65 of the crimp sleeve 63 favourably provides better electrical contact with the clamping element 50 than, for example, a shielding 102 made of a wire mesh. Favourably, a surface 65 of the crimp sleeve 63 and/or one shown in FIG. 1, the inner sheath surface 55 of the clamping element 50 is designed in such a way that electrical contact is improved, for example, roughened or smoothed.

[0101] FIG. 10 shows a further form of the contacting system 10, in which the screw-on sleeve 12 and the clamping element 50 are designed as a single piece or as a single part. The clamping element 50 comprises a plurality of slits 52 on the first side 11, of which only one is indicated as an example. The actuating element 24 comprises a counter-pressure surface 26 on its inner side.

[0102] FIG. 11 shows an exploded view of the contacting system 10 from FIG. 10. The actuating thread 19 is placed between the connection thread 18 and the clamping element 50. The actuating element 24 comprises a thread 25, which is designed as an internal thread.

[0103] The proposed contacting system 10 favorably creates a way to ensure large tolerances in the assembly of long-moulded parts 100, in which, for example, the positioning of the clamping element 50 can be generously selected on the shielding 102 of the long-moulded part 100 and the stripped part of the shielding does not have to be adapted exactly to the conditions of the contacting system. Another advantage is that the actuation of the contacting system, i.e., contacting with the shielding, can be carried out independently of further assembly steps, thus further simplifying the assembly of the long-moulded part.

[0104] Unless otherwise expressly indicated herein, all numerical values indicating mechanical/thermal properties, compositional percentages, dimensions and/or tolerances, or other characteristics are to be understood as modified by the word “about” or “approximately” in describing the scope of the present disclosure. This modification is desired for various reasons including industrial practice, material, manufacturing, and assembly tolerances, and testing capability.

[0105] As used herein, the phrase at least one of A, B, and C should be construed to mean a logical (A OR B OR C), using a non-exclusive logical OR, and should not be construed to mean “at least one of A, at least one of B, and at least one of C.”

[0106] The apparatuses and methods described in this application may be partially or fully implemented by a special purpose computer created by configuring a general-purpose computer to execute one or more particular functions embodied in computer programs. The functional blocks, flowchart components, and other elements described above serve as software specifications, which can be translated into the computer programs by the routine work of a skilled technician or programmer.

[0107] The description of the disclosure is merely exemplary in nature and, thus, variations that do not depart from the substance of the disclosure are intended to be within the scope of the disclosure. Such variations are not to be regarded as a departure from the spirit and scope of the disclosure.