DE102014204096A1 - Method for producing a coupling device and coupling device - Google Patents

Abstract

Coupling device and method for producing a coupling device, in which a receiving unit (3), at least two conductor wires (5) and a braided shield (7) and a coupling element (9) are provided, wherein the receiving unit (3) has a screen holder (3a), the screen braid (7) electromagnetically shields the conductor wires (5) and has a screen section (7a) concentrically encasing the screen receptacle (3a), the screen section (7a), the line wires (5) and the pickup unit (3) so moved relative to each other in that the shield section (7a) encases the screen receptacle (3a) and the line leads (5) penetrate into the receiving unit (3), the coupling element (9) pushed onto the screen section (7a) concentrically surrounds the screen receptacle (3a), and a Circumference of the coupling element (9) by means of magnetic deformation, by applying the coupling element (9) with a magnetic field is reduced such that the coupling element (9) on the Sc hirmabschnitt (7a) and the screen holder (3a) is pressed, so that the screen braid (7) with the screen holder (3a) is electrically and / or mechanically coupled.

Description

The invention relates to a method for producing a coupling device and a coupling device.

Out DE102011087762A1 For example, a device bushing is known for performing a high-frequency cable arrangement with a plurality of cables, which are jointly encased by a summation screen, through a housing. The device feedthrough has a holding element. The holding element is designed such that the summation screen of the high-frequency cable arrangement can be attached to the holding element, for. B. to be able to produce an electrical connection from the summation screen on the retaining element to the housing. In order to be able to electrically and mechanically connect the summation screen to the device feed-through, a shield connection holder can be provided on the holding element. The shield connection holder can be designed to bring the high-frequency cable arrangement enveloping sum screen in electrical contact with the device housing. The holding element itself in turn is attached to the device housing and brought into electrical contact with this.

Furthermore, it is off DE102012208207A1 a housing shield is known in which a ground conductor is connected to a particular aluminum having or consisting of aluminum housing. If the ground conductor is provided as a shielding braid, a sleeve can be applied to such a cable and connected to the braided shielding. The sleeve is then pressed, for example, with the housing. Alternatively, the sleeve can be screwed into the housing, welded or cast with this.

The object underlying the invention is to provide a method for producing a coupling device and a coupling device, which enables a reliable coupling.

The object is solved by the features of the independent claims. Advantageous embodiments are characterized in the subclaims.

According to a first aspect, the invention is characterized by a method for producing a coupling device, in which a receiving unit is provided which has a screen receptacle made of electrically conductive material. An outer contour of a cross section of the screen receptacle has at least two different curvature values.

Furthermore, at least two conductor wires and a screen braid are provided. The braided shield is designed to shield the conductor wires electromagnetically. The braided shield has a screen section which is designed to surround the screen receiver of the receiving unit concentrically.

The screen portion with the wire leads and the receiving unit are moved relative to each other such that the screen portion sheathed the screen receptacle and the lead wires penetrate into the receiving unit.

A coupling element made of electrically conductive material is provided in such a way that it concentrically surrounds the screen receptacle, pushed onto the screen section. A circumference of the coupling element is reduced by means of magnetic deformation, by applying a magnetic field to the coupling element such that the coupling element is pressed onto the screen section and the screen receptacle. The screen braid is thus electrically and / or mechanically coupled to the screen holder.

It has been found that when the coupling element and the shield section are coupled to the receiving unit in a section of higher curvature values, the concave outer contour of the cross section typically has a higher contact force acting on the coupling element and the screen section than in a section of lower curvature values. Due to the magnetic deformation of the coupling element, the circumference of the coupling element is uniformly reduced and a contribution is made that the contact force acts uniformly on the screen section and the screen receptacle, regardless of the curvature values of the outer contour. This has the advantage of making an effective contribution to keeping constant a DC junction resistance, a transfer impedance and a screen attenuation of the coupling device, especially over a long period of operation. As a result, a contribution is made that an electromagnetic compatibility of the coupling device is ensured and additional measures for damping interference signals can be omitted. Furthermore, can account for the high contact pressure an additional mechanical fixation of the shield braid.

Depending on the application or for design reasons, the outer contour of the cross section of the screen receptacle may in particular have a multiplicity of different curvature values. The outer contour may, for example, be elliptical or elliptical in sections. Furthermore, the outer contour may for example be straight in sections. Furthermore, the outer contour may, for example, be circular in sections.

A shielding of the leads contributes particularly effectively to ensure, for example, the electromagnetic compatibility.

The cable cores may be, for example, high-voltage cable cores.

The wires and braid can be provided so that the braid already surrounds the wires. Alternatively, the wires and braid can be provided separately.

The screen section is pushed onto the screen receptacle, for example, so that it concentrically surrounds the screen receptacle.

The conductor wires are inserted, for example, in the receiving unit. The receiving unit has an end face at an axial end, which is concentrically encased by the screen section. The end face may, for example, have one or more recesses into which the conductor wires penetrate. The conductor wires can be electrically and / or mechanically coupled, for example, in the receiving unit. An electrical and / or mechanical coupling of the conductor wires can for example also be done externally to the receiving unit. In this case, the wires penetrate the receiving unit.

In the case that the braided shield is provided so that it surrounds the conductor wires, insertion of the conductor wires into the receiving unit and pushing the screen section onto the screen holder can take place in one step. Alternatively or additionally, for example, the receiving unit to be moved to the line wires and / or the braided screen.

The coupling element may be provided so as to surround the screen section. Alternatively, the coupling element may be provided so as to surround the screen mesh externally of the screen portion, or it may be provided on the receiving unit so as to surround the receiving unit and be slid onto the screen receptacle. In this case, the coupling element is pushed onto the screen section when the screen section encloses the screen receptacle.

During the magnet forming of the coupling element, the coupling element is positioned in a high-power work coil with an intermediate field former. The high power work coil generates high intensity pulsed magnetic fields which produce a Lorentz force which acts concentrically on the coupling element and uniformly reduces the circumference of the coupling element. Magnetic transformation may also be referred to as EMPT or electromagnetic pulse technology.

In an advantageous embodiment, the receiving unit has a Schirmabzugssteg. The Schirmabzugssteg protrudes beyond the screen recording based on their outer contour. The Schirmabzugssteg is disposed in a region of an axial end of the receiving unit, which is covered by the shield braid.

In an advantageous manner, this contributes to a robust and reliable coupling of the shielding braid to the receiving unit.

The Schirmabzugssteg may protrude based on its outer contour, for example, over an inner contour of the coupling element. For example, the Schirmabzugssteg acts as a strain relief by a withdrawal force acting in the longitudinal direction, with respect to the coupling element in the direction of Schirmabzugsstegs on the shield braid, deflected via the Schirmabzugssteg and only proportionally in the longitudinal direction is transmitted to the coupling element. Furthermore, the Schirmabzugssteg example, prevent removal of the coupling element in the direction of Schirmabzugsstegs.

In a further advantageous embodiment, a grommet is provided. The grommet and the receiving unit are moved relative to each other so that the grommet sheathed the screen receptacle, the screen portion and the coupling element.

This helps ensure that the screen holder, the screen section and the coupling element are protected against environmental influences and reliable operation is ensured. The receiving unit, the cable cores and the braid can be installed in places that are exposed to environmental influences, such as moisture. The grommet contributes to prevent corrosion of the receiving unit, the wires and the shield braid.

In a further advantageous embodiment, the receiving unit has a Dichtungsabzugssteg and a seal receptacle. The Dichtungsabzugssteg is facing away from the shield receptacle formed by a portion of an axial end of the receiving unit, which is covered by the shield braid. The Dichtungsabzugssteg protrudes beyond the seal receptacle based on their outer contour. The seal receiver is limited towards the screen receptacle by the seal vent web.

The grommet has a sealing portion which is formed so that the Dichtabzugssteg protrudes beyond an inner contour of the sealing portion, when the sealing portion encases the seal receptacle. The sealing portion is further adapted to sealingly couple the receiving unit via the sealing seat when the sealing portion encases the seal seat.

The grommet and the receiving unit are relatively moved to each other, that the sealing portion encases the seal receptacle.

This has the advantage that the grommet can be reliably fixed.

The grommet, for example, be elastically deformed, so that the sealing portion can be pushed onto the Dichtungsabzugssteg. For example, acts by an elasticity of the grommet a clamping force of the sealing portion on the seal receptacle. The sealing portion is under tension on the seal holder. Thus, a frictional coupling between the sealing portion and the seal receptacle is achieved.

In this context, it may be expedient if the grommet has a step which connects the sealing portion with a region of the grommet whose inner contour protrudes beyond the Dichtungsabzugssteg the receiving unit. In a force acting on the grommet force with respect to the sealing portion in the direction of the Dichtungsabzugsstegs the step rests on the Dichtungsabzugssteg, so that, for example, a slippage of the sealing portion is prevented.

The Dichtungsabzugssteg contributes to a fixation of the grommet and prevents, for example, a removal of the grommet in the direction of the Dichtungsabzugsstegs.

In a further advantageous embodiment, the receiving unit has a sealing edging web. The sealing edging protrudes beyond the seal seat with respect to its outer contour. The sealing edging web limits the seal receptacle away from the screen receptacle.

Advantageously, the sealing rib helps to ensure that the grommet is reliably fixed.

Slippage of the sealing portion in the direction of the sealing upset ridge is limited by the sealing ridge.

In this connection, it may be expedient for the grommet to have a sealing web which is arranged at an axial end of the sealing section in the direction of the sealing stiffening web. Advantageously, the sealing web contributes to the fact that a force acting on the grommet force in the direction of the sealing edging web causes a compression of the grommet.

The caulking web forms a groove together with the gasket vent.

In a further advantageous embodiment, the screen holder and the coupling element are formed from the same electrically conductive material. This has the advantage that contact corrosion can be avoided.

For example, the screen holder and the coupling element are made of aluminum.

According to a second aspect, the invention is characterized by a coupling device, which has the receiving unit with the screen holder, and the at least two conductor wires, the screen braid with the screen portion and the coupling element, which slidably on the screen portion concentrically surrounds the screen receptacle. The braided shield shields the conductor wires electromagnetically and encapsulates the screen section with the screen section. The conductor wires penetrate into the receiving unit, and the circumference of the coupling element is reduced by means of magnet forming so that the coupling element presses on the screen section and the screen receptacle, so that the screen mesh is electrically and / or mechanically coupled to the screen receptacle.

The coupling device corresponds with respect to its effect and its advantageous embodiments to the first aspect.

Embodiments of the invention are explained in more detail below with reference to the schematic drawings.

Show it:

1 a longitudinal section of a coupling device,

2 a cross section of the coupling device according to 1 and,

3 a flowchart of a process for the preparation of the coupling device.

Elements of the same construction or function are identified across the figures with the same reference numerals.

The coupling device ( 1 ) has a plug unit 1 , Wires 5 , a braided screen 7 , a coupling element 9 and a grommet 11 on.

The plug unit 1 includes the receiving unit 3 , as well as the extension 13 , The recording unit 3 has a screen capture 3a , a screen tab 3b , a gasket holder 3c , a gasket strip 3d and a caulking web 3e on. The screen braid 7 has a screen section 7a on. The grommet 11 has a sealing portion 11a , a sealing bar 11b and a step 11c on.

The plug unit 1 can be designed for example as a high-voltage connector. The extension 13 is for example a mechanical coupling of the plug unit 1 formed with a suitable mating connector.

The recording unit 3 has one of the extension at an axial end 13 opposite end face 3f on. For example, the front side 3f orthogonal to the front 3f at least one recess in which the cable cores 5 penetration. The wires 5 protrude, for example, in a cavity of the extension 13 , The wires 5 For example, they may be electrically and / or mechanically coupled in this cavity. Alternatively, the wires can 5 for example, in the recess of the receiving unit 3 be electrically and / or mechanically coupled.

The screen braid 7 is arranged such that it is the conductor wires 5 for example, concentrically surrounds and the screen section 7a the screen recording 3a as well as the Schirmabzugssteg 3b jacketed. The screen section 7a extends, for example, up to the Dichtungsabzugssteg 3d approach. The screen braid 7 is designed to the wires 5 shield electromagnetically. The screen braid 7 is made of copper, for example. For example, the braid can 7 be designed as a ground conductor.

For example, the wires are 5 designed as high-voltage cable cores of a so-called high-voltage UVW connector. Alternatively, the wires are 5 For example, designed as a line conductors of a so-called infotainment plug-in system. The screen braid 7 contributes to the operation of the wires 5 an electromagnetic compatibility is guaranteed.

The screen section 3a is from the coupling element 9 surround. A circumference of the coupling element is reduced by means of magnetic deformation such that the coupling element the screen portion on the screen holder 3a pressed.

An outer contour of the umbrella section 3a has at least two curvature values. By the magnetic deformation of the coupling element 9 presses the coupling element regardless of a curvature of its outer contour uniformly on the screen section 3a , The screen holder 3a and the coupling element 9 are made of aluminum, for example, so that contact corrosion is avoided.

By a contact force of the coupling element 9 independent of the curvature of the outer contour of the screen section 7a evenly on the screen section 7a For example, over a long period of operation, for example, an effective contribution can be made to keep a DC junction resistance and a transfer impedance constant. Furthermore, the uniform contact force contributes to a screen attenuation of the coupling device can be kept constant high. In particular in the case of temperature-induced material expansions of the coupling device, a contribution is made such that the DC transfer resistance, the transfer impedance and the screen attenuation are kept constant. Thus, measures for electromagnetic compatibility externally to the coupling device, for example a suppression of interference signals, can be substantially reduced or eliminated.

The screen tab 3b is at an axial end of the receiving unit 3 arranged, that of the screen section 7a is surrounded. At a withdrawal force, with respect to the coupling element 9 in the direction of the Schirmabzugsstegs 3b on the screen braid 7 acts, the screen tab can 3b For example, act as a strain relief.

The seal vent web 3d forms with the sealing edging web 3e a groove. The sealing bar 11b is at one of the seal vent web 3d remote axial end of the sealing portion 11a arranged. The stage 11c the grommet 11 is the gasket web 3d facing between the sealing portion 11a and a portion of the grommet 11 arranged, the inner contour of the seal vent web 3d protrudes.

The sealing section 11a the grommet 11 is arranged between the two webs and is bounded by the sealing web 11b and the stage 11c ,

1 shows a tension-free state of the grommet 11 , In a mounted state lies the sealing section 11a under tension on the gasket holder 3c on. The grommet 11 , in particular the sealing section 11a is elastically deformable, so that the sealing portion 11a for example, via the seal vent web 3d the groove can be pushed and the sealing section 11a a contact pressure on the seal receiver 3c produced, so that the grommet 11 with the recording unit 3 frictionally coupled.

The groove prevents slippage of the sealing portion 11a , In particular, the Dichtungsabzugssteg 3d designed to prevent slipping of the grommet 11 in the direction of the coupling element 9 to prevent. The seal quiver 3e is particularly adapted to slipping the grommet 11 in the direction of the extension 13 to prevent.

In the 1 only schematically illustrated grommet 11 can from the gasket web 3d in the direction of the coupling element 9 an arbitrarily long section of the receiving unit 3 , the leader 5 and the screen braid 7 wrap. Likewise, the braid can 7 in this direction an arbitrarily long section of the receiving unit 3 and the wires 5 wrap. Preferably encase the grommet 11 and the braid 7 the wires 5 in this direction until electrical and / or mechanical coupling of the plug unit 1 opposite end of the wires 5 ,

The grommet 11 is designed to be the receiving unit 3 , the screen braid 7 , as well as the coupling element 9 to protect against environmental influences. For example, the coupling device may be exposed to moisture. For this purpose, the contact pressure of the sealing portion 11a on the gasket holder 3c , so high that the grommet 11 with the recording unit 3 sealing closes.

2 shows a cross section of the coupling device with the plug unit 1 , the recording unit 3 , the screen recording 3a , the wires 5 , the screen section 7a , the coupling element 9 , as well as the grommet 11 ,

The outer contour of the cross section of the receiving unit 3 , the screen recording 3a , the screen section 7a , as well as the coupling element 9 is partially circular, and partially straight. The recording unit 3 has three circular recesses on a longer of both axes of symmetry of the cross section of the receiving unit 3 are arranged. In each of the three recesses protrudes one of the wires 5 into it.

The screen holder 3a is concentric with the screen section 7a jacketed. The coupling element 9 surrounds the screen section 7a as well as the screen recording 3a concentric. The coupling element 9 presses the screen section 7a regardless of the curvature of the outer contour on the screen holder 3a so that the contact pressure on the screen section 7a in a circular portion of the outer contour and a straight portion of the outer contour uniformly acts.

The grommet 11 surrounds the coupling element 9 , the screen section 7a , as well as the screen recording 3a and the wires 5 concentric.

3 FIG. 10 is a flowchart showing a procedure for manufacturing the coupling device. FIG. In a step S1, the plug unit 1 , the wires 5 , the screen braid 7 , the coupling element 9 and the grommet 11 provided. In particular, the plug unit 1 provided so that it is the receiving unit 3 and the extension 13 includes, wherein the receiving unit 3 the screen recording 3a , the screen tab 3b , the gasket holder 3c , the weather strip 3d , the sealing quiver 3e as well as the front side 3f having the recesses.

Furthermore, the wires are 5 , the screen braid 7 and the grommet 11 provided such that the braid 7 the wires 5 already encased and the grommet already the wires 5 and the braid 7 sheathed, for example, so that an axial end of the wires 5 from an axial end of the shielding braid 7 with the screen section 7a protrudes, and the umbrella section 7a from an axial end of the grommet 11 with the sealing section 11a protrudes.

The plug unit 1 is further provided such that at least the screen holder 3a in an EMPT high power work coil.

In a step S3, the coupling element 9 over the axial end of the wires 5 on the screen section 7a pushed.

In a step S5, the wires become 5 in the recesses of the front side 3f introduced and optionally electrically and / or mechanically in the extension 13 the plug unit 1 coupled.

In a step S7, the screen section becomes 7a together with the coupling element 9 over the screen trigger bar 3b on the screen 3a pushed so that the screen capture 3a together with the umbrella section 7a and the coupling element 9 is located in the EMPT high power work coil.

In a step S9, the circumference of the coupling element 9 reduced by means of magnetic forming, so that the coupling element 9 the screen section 7a on the screen 3a pressed.

In a step S11, the sealing portion becomes 11a elastically deformed so that it passes over the seal vent web 3d can be pulled and then form-fitting with the groove of seal edging web 3e and seal vent 3d is tense.

LIST OF REFERENCE NUMBERS

1

plug unit

3

recording unit

3a

screen recording

3b

Screen trigger bar

3c

seal Housing

3d

Seal deduction Steg

3e

Seal compression bar

3f

front

5

cable core

7

braided shield

7a

screen section

9

coupling element

11

grommet

11a

sealing section

11b

sealing web

11c

step

13

extension

S1 ... S11

process steps

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102011087762 A1 [0002]
• DE 102012208207 A1 [0003]

Claims (12)

Method for producing a coupling device, in which - a receiving unit ( 3 ) providing a screen image ( 3a ) made of electrically conductive material, wherein an outer contour of a cross section of the screen receptacle ( 3a ) has at least two different curvature values, - at least two conductor cores ( 5 ) and a braided shield ( 7 ), wherein the braided shield ( 7 ), the line conductors ( 5 ) Electromagnetic shield and the braided shield ( 7 ) a screen section ( 7a ), which is formed, the screen receptacle ( 3a ) of the recording unit ( 3 ) concentrically to shroud, - the screen section ( 7a ) with the wires ( 5 ) and the recording unit ( 3 ) are moved relative to each other such that the screen section ( 7a ) the screen image ( 3a ) and the wires ( 5 ) into the receiving unit ( 3 ), - a coupling element ( 9 ) is provided of electrically conductive material in such a way that it is pushed onto the screen section ( 7a ) the screen image ( 3a ) concentrically surrounds, - a circumference of the coupling element ( 9 ) by means of magnetic deformation, by applying the coupling element ( 9 ) is reduced with a magnetic field such that the coupling element ( 9 ) on the screen section ( 7a ) and the screen image ( 3a ) is pressed so that the braid ( 7 ) with the screen holder ( 3a ) is electrically and / or mechanically coupled. Method according to Claim 1, in which the receiving unit ( 3 ) a Schirmabzugssteg ( 3b ), which via the screen recording ( 3a ) protrudes beyond its outer contour and in a region of an axial end of the receiving unit ( 3 ) arranged by the braid ( 7 ) is sheathed. Method according to one of the preceding claims, in which - a grommet ( 11 ) is provided and, - the grommet ( 11 ) and the recording unit ( 3 ) are moved relative to each other so that the grommet ( 11 ) the screen image ( 3a ), the umbrella section ( 7a ) and the coupling element ( 9 ) sheathed. Method according to Claim 3, in which - the receiving unit ( 3 ) a Dichtungsabzugssteg ( 3d ) and a seal receiver ( 3c ), - the Dichtungsabzugssteg ( 3d ) with regard to the screen recording ( 3a ) facing away from a region of an axial end of the receiving unit ( 3 ) formed by the braid ( 7 ) and over the seal receiver ( 3c ) protrudes beyond its outer contour, - the seal holder ( 3c ) in the direction of the screen recording ( 3a ) through the seal release web ( 3d ), - the grommet ( 11 ) a sealing portion ( 11a ), which is formed so that the Dichtungsabzugssteg ( 3d ) over an inner contour of the sealing portion ( 11a ) and the sealing section ( 11a ) the recording unit ( 3 ) via the seal receiver ( 3c ) sealingly coupled when the sealing portion ( 11a ) the seal receiver ( 3c ), - the grommet ( 11 ) and the recording unit ( 3 ) are moved relative to each other so that the sealing portion ( 11a ) the seal receiver ( 3c ) sheathed. Method according to Claim 4, in which the receiving unit ( 3 ) a sealing edging web ( 3e ), which via the seal receptacle ( 3c ) protrudes beyond its outer contour and the seal holder ( 3c ) facing away from the screen holder ( 3a ) limited. Method according to one of the preceding claims, in which the screen receiver ( 3a ) and the coupling element ( 9 ) are formed of the same electrically conductive material. Coupling device comprising - a receiving unit ( 3 ) comprising a screen image ( 3a ) made of electrically conductive material, wherein an outer contour of a cross section of the screen receptacle ( 3a ) has at least two different curvature values, - at least two conductor cores ( 5 ) and a braided shield ( 7 ) that covers the wires ( 5 ) shields electromagnetically and a screen section ( 7a ), - a coupling element ( 9 ) of electrically conductive material, wherein - the screen section ( 7a ) the screen image ( 3a ) concentrically sheathed and the wires ( 5 ) into the receiving unit ( 3 ) and, - the coupling element ( 9 ) the screen section ( 7a ) concentrically surrounds and is formed by magnet forming such that the coupling element on the screen portion ( 7a ) and the screen image ( 3a ) is pressed so that the braid ( 7 ) with the screen holder ( 3a ) is electrically and / or mechanically coupled. Coupling device according to Claim 7, in which the receiving unit ( 3 ) a Schirmabzugssteg ( 3b ), which via the screen recording ( 3a ) protrudes beyond its outer contour and in a region of an axial end of the receiving unit ( 3 ) arranged by the braid ( 7 ) is sheathed. Coupling device according to one of claims 7 or 8, comprising a sealing grommet ( 11 ), which screens the screen ( 3a ), the umbrella section ( 7a ) and the coupling element ( 9 ) sheathed. Coupling device according to one of Claims 7 to 9, in which - the receiving unit ( 3 ) a Dichtungsabzugssteg ( 3d ) and a seal receiver ( 3c ), - the Dichtungsabzugssteg ( 3d ) with regard to the screen recording ( 3a ) facing away from a region of an axial end of the receiving unit ( 3 ) formed by the braid ( 7 ) and over the seal receiver ( 3c ) protrudes beyond its outer contour, - the seal holder ( 3c ) in the direction of the screen recording ( 3a ) through the seal release web ( 3d ) is limited. Coupling device according to Claim 10, in which the receiving unit ( 3 ) a sealing edging web ( 3e ), which via the seal receptacle ( 3c ) protrudes beyond its outer contour and the seal holder ( 3c ) facing away from the screen holder ( 3a ) limited. Coupling device according to one of Claims 7 to 11, in which the receiving unit ( 3 ) and the coupling element ( 9 ) are formed of the same electrically conductive material.

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