EP4322341A1 - Connection arrangement for electrically connecting a bus unit to a differential bus system - Google Patents

Abstract

The present invention relates to a connection arrangement for electrically connecting a bus subscriber to a differential bus system. The present invention further relates to a differential connector arrangement, a differential bus connector and a corresponding differential mating connector.

A connection arrangement (1) for electrically connecting a bus subscriber (TN) to a differential bus system has a differential main conductor section (2) with a first electrical main conductor (2 ₁ ) and a second electrical main conductor (2 ₂ ). The differential main conductor section (2) has a first section (5 ₁ ) and a second section (5 ₂ ) electrically connected to the first section (5 ₁ ). In the first electrical main conductor (2 ₁ ) between the first section (5 ₁ ) and the second section (5 ₂ ) there is a first connection (4 ₁ ) for electrically connecting to a first mating connection of the bus subscriber (TN) and in the second electrical main conductor ( 2 ₂ ) between the first section (5 ₁ ) and the second section (5 ₂ ), a second connection (4 ₂ ) is designed for electrical connection to a second mating connection of the bus subscriber (TN). The first and second electrical main conductors (2 ₁ , 2 ₂ ) are each enclosed by a body (6; 6 ₁ , 6 ₂ ) made of a magnetizable material, at least in the first section (5 ₁ ) or in the second section (5 ₂ ).

Description

FIELD OF THE INVENTION

The present invention relates to a connection arrangement for electrically connecting a bus subscriber to a differential bus system with the features of patent claim 1.

The present invention also relates to an electrical differential bus connector for a differential bus system with the features of patent claim 11.

The present invention further relates to an electrical differential connector arrangement for a differential bus system with the features of patent claim 13.

The present invention finally relates to an electrical differential mating connector of an electrical differential connector arrangement for a differential bus system with the features of patent claim 15.

TECHNICAL BACKGROUND

Differential bus systems are used in many fields of application, for example in industry, in the automobile or in the office, for data transmission between several bus participants. The line system of a differential bus system essentially comprises a differential main line, from which a differential branch line comes out for each bus participant. Alternatively, the bus subscriber can also be connected directly to the differential main line without the interposition of a differential branch line. Both shielded cables and unshielded cables are used.

Out of Fig. 1A shows an equivalent circuit diagram for a differential bus system. The transmission characteristics of the differential bus system result not only from the ohmic line coverings R _H and G _H , the capacitive line coverings C _H and the inductive line coverings L _H of the individual line sections, but also from the input impedance of each bus participant TN. The input impedance of a bus subscriber TN, ie an electronic assembly, results from an equivalent circuit consisting of an ohmic input resistance R _dev , a parasitic capacitance C _dev and a parasitic inductance L _dev at the differential input of the bus subscriber TN. In the equivalent circuit diagram Fig. 1A the bus subscriber TN shown in the left half is connected directly to the main line of the bus system, while the bus subscriber TN shown in the right half is connected via a branch line with the ohmic line covering R _S and Gs, the capacitive line covering C _S and the inductive line covering L _S the main line of the bus system is connected.

In particular, the parasitic capacitance C _dev at the differential input of an electronic assembly, which results from the parasitic properties of the real components of the electronic assembly from the technical properties of the associated ideal component, significantly distorts the characteristic impedance of the differential bus. The parasitic one Capacity C _dev can be used to improve the transmission properties of the bus system Fig. 1B can be compensated for by an additional inductance Lc in the two main conductors of the differential bus system. For this purpose, corresponding line sections of the differential line system are usually separated and a discrete inductive component, preferably a discrete coil, is inserted and connected to the adjacent line sections by soldering.

The soldering process is a comparatively complex and therefore expensive manufacturing process. There is also the risk of bad soldering joints, i.e. H. of “cold solder joints” should not be underestimated and can additionally increase manufacturing costs due to post-processing.

This is a situation that needs to be improved.

SUMMARY OF THE INVENTION

Against this background, the present invention is based on the object of providing a technical compensation option for a parasitic capacitance present at the differential input of a bus subscriber in a differential bus system, which can be produced more cost-effectively in terms of production technology and improves the high-frequency transmission behavior of the differential bus system.

According to the invention, this object is achieved by a connection arrangement for electrically connecting a bus subscriber to a differential bus system with the features of patent claim 1.

Accordingly it is provided:

• einen differentiellen Hauptleiterabschnitt
• mit einem ersten elektrischen Hauptleiter und
• einem zweiten elektrischen Hauptleiter,
• wobei der differentielle Hauptleiterabschnitt einen ersten Teilabschnitt und
• einen mit dem ersten Teilabschnitt elektrisch verbundenen zweiten Teilabschnitt aufweist,
• wobei im ersten elektrischen Hauptleiter zwischen dem ersten Teilabschnitt und dem zweiten Teilabschnitt ein erster Anschluss zum elektrischen Verbinden mit einem ersten Gegenanschluss des Busteilnehmers und
• im zweiten elektrischen Hauptleiter zwischen dem ersten Teilabschnitt und dem zweiten Teilabschnitt ein zweiter Anschluss zum elektrischen Verbinden mit einem zweiten Gegenanschluss des Busteilnehmers ausgebildet sind,
• wobei der erste und der zweite elektrische Hauptleiter wenigstens im ersten Teilabschnitt oder im zweiten Teilabschnitt jeweils von einem Körper aus einem magnetisierbaren Material umschlossen sind.

Having a connection arrangement for electrically connecting a bus subscriber to a differential bus system

• a differential main conductor section
• with a first main electrical conductor and
• a second main electrical conductor,
• wherein the differential main conductor section has a first section and
• has a second section electrically connected to the first section,
• wherein in the first electrical main conductor between the first section and the second section there is a first connection for electrically connecting to a first mating connection of the bus subscriber and
• A second connection for electrical connection to a second mating connection of the bus subscriber is formed in the second electrical main conductor between the first section and the second section,
• wherein the first and second electrical main conductors are each enclosed by a body made of a magnetizable material at least in the first section or in the second section.

The idea underlying the present invention is to encase the line section by a body made of a magnetizable material instead of a discrete inductive component in a specific line section of a differential bus system. The inductive line covering of the line section can be increased by covering it with a body made of a magnetizable material. In particular, the inductance of the line section can be increased through a suitable geometry and specifically adjust a suitable material choice for the body from the magnetizable material. The parasitic capacitance at the differential input of the bus subscriber can therefore advantageously be compensated for by the body made of the magnetizable material.

In addition, instead of separating the line section, inserting the discrete inductive component into the separated line section and connecting the discrete inductive component to the separated line section by soldering, only a simple joining process is required in which the body made of a magnetizable material is guided over the line section becomes.

For a particularly advantageous compensation of the parasitic capacitance at the differential input of the bus subscriber, the bodies made of the magnetizable material are preferably routed over the conductor sections of the differential bus system closest to the respective bus subscriber.

A bus system is a line arrangement that is used jointly for data transmission by several bus participants who are connected to the bus system. The line arrangement usually consists of a main line (trunk line) and several branch lines (stub lines) branching off from the main line, each of which is connected to an associated bus subscriber. A direct connection of the bus participants to the main line is also conceivable. The main line preferably has a linear structure. In a linear structure, the two ends of the main line can each be terminated with an adjusted impedance to avoid unwanted reflections to avoid high-frequency signals transmitted via the bus system. In addition to a linear structure, other structures of a main line are also conceivable, for example a ring-shaped structure or a “tree-shaped” structure.

Due to the immunity to interference, especially when transmitting a high-frequency signal, modern transmission systems, for example USB, Ethernet, HDMI, SATA, etc., are designed differentially. They have a differential line arrangement in which a differential signal is transmitted. A differential line arrangement thus has a main line with a first electrical main conductor and a second electrical main conductor and optionally a plurality of stub lines, each with a first electrical stub conductor and each with a second electrical stub conductor.

In this context, it should be noted that the terms “first main electrical conductor” and “second main electrical conductor” as well as “differential main conductor section” are here and in the following particularly referred to as the electrical conductors (e.g. strands) of a differential main line, i.e. H. of two wires of a differential bus system or as the electrical paths in two contact elements of an electrical differential connector, in particular an electrical differential bus connector, which is arranged between two line sections of a differential main line of a differential bus system.

The terms “first electrical stub conductor” and “second electrical stub conductor” as well as “differential stub conductor section” can be equivalent here and below in particular as the electrical conductors (e.g. strands) of a differential stub line of a differential bus system between the main line and the bus subscriber or as the electrical paths in two contact elements of an electrical connector, in particular an electrical differential bus connector, which in the stub line path between the main line path and the Bus participants of a differential bus system are arranged, to be understood.

The connection arrangement has at least one differential main conductor section, in which a first and a second connection are formed, which can each be electrically connected to a first or a second mating connection of a bus subscriber. The first and second mating connections of the bus participant form the differential connection or the differential input of the bus participant. The first and second connections are formed between a first section and a second section of the differential main conductor section. The first connection in the first electrical main conductor and the second connection in the second main electrical conductor are each formed between the first and the second section. The connection arrangement thus has a differential T-shaped structure with the two sections of the differential main conductor section and the electrical connection to the bus subscriber. This differential T-shaped structure can be designed either as a T-shaped differential line section or as a T-shaped differential connector.

Such a connection arrangement is preferably electrical with two similar connection arrangements connected, each of which is electrically connected to the nearest neighboring bus participants in the differential bus system.

The electrical connection between two adjacent connection arrangements can take place directly over a short distance or via an interposed and appropriately dimensioned differential main conductor section over a longer distance. If the respective bus subscriber is located at one end of the main line, the associated connection arrangement is alternatively terminated at the associated end of the differential main conductor section with an adapted impedance or with a bus subscriber whose differential input has an adapted impedance in addition to the parasitic replacement elements.

The first electrical main conductor and the second electrical main conductor of the differential main conductor section can preferably be routed parallel to one another. This applies in particular to an embodiment of the first and second main conductors as a contact element in the main conductor path of an electrical differential bus (plug) connector. For the first and second main conductors to be designed as strands of an electrical main line, ie as strands of a wire forming an electrical main line, the two electrical main lines of the differential main line pair and thus the first and second electrical main conductors can also be stranded to one another. In this context, it should be mentioned that the two main lines of a differential bus system can be designed both as separate lines and preferably as a single line composed of two wires.

In a first embodiment of a connection arrangement, the first and second connections can each be electrically connected directly, that is to say immediately, to the associated mating connections of the bus subscriber:
Preferably, the first connection and the second connection can each be a plug-in interface of a differential bus connector. This can, for example, be a contacting area of a contact element of a differential bus connector, which electrically contacts an associated mating contact element of a mating connector, preferably designed as a housing connector, at the differential input of a bus subscriber. Alternatively, this can also be an insulation displacement terminal which, on the one hand, electrically contacts a main conductor and, on the other hand, has a contacting area which contacts a mating contact element of a mating connector formed in the bus subscriber.

In a second embodiment of a connection arrangement, the first and second connections can each be electrically connected to a first electrical stub conductor and a second electrical stub conductor of a differential stub conductor section which is formed within the connection arrangement. The first and second electrical stub conductors can each be designed as a contact element or each as a contact section of a contact element in a differential bus connector. The contact elements of the differential bus connector can each contact the associated mating contact elements of a mating connector of the bus subscriber. It is also conceivable that the first electrical branch conductor and the second electrical stub conductor are each strands of a differential stub line, the end of which can be electrically connected to a plug connector for electrically connecting to an associated mating plug connector of the bus subscriber.

The first electrical stub conductor and the second electrical stub conductor of the differential stub conductor section can also preferably be guided parallel to one another. Alternatively, the first electrical stub conductor and the second electrical stub conductor of the differential stub conductor section can also be stranded to one another if the first and the second stub conductors are each designed as strands of an electrical stub line.

According to the invention, the first and second electrical main conductors can each be enclosed by a body made of a magnetizable material both in the first section and in the second section of the differential main conductor section. Such an implementation enables the best possible compensation of the influence of the parasitic capacitance present at the differential input of the bus subscriber on the transmission behavior of the differential bus system. Alternatively, it is also possible that either the first and the second electrical main conductor in the first section of the differential main conductor section or the first and the second electrical main conductor in the second section of the differential main conductor section are each enclosed by a body made of a magnetizable material.

In both cases, the first main electrical conductor and the second main electrical conductor are made of one through the body magnetizable material is mechanically separated from one another, so that when current flows in the first and second electrical main conductors, a different magnetic flux path can be formed in the at least one body and thus the inductance in both the first electrical main conductor and in the second electrical main conductor can be increased and thus adjusted is.

The magnetizable materials can preferably be ferromagnetic metal alloys or ferrimagnetic materials, so-called ferrites. Essentially, magnetizable materials with low residual magnetism can be used as a prerequisite for low-loss magnetization reversal with high-frequency currents and for low eddy current losses. Bodies made of ferrite material, so-called ferrite cores, in particular have these material properties.

The inductance in the first and second main conductors in the first and second sections of the differential main conductor section is adjusted by means of the respectively enveloping body made of the magnetizable material via the so-called A _L value of the magnetizable body, which is the reciprocal of the magnetic resistance R _m of the magnetizable body, which in turn depends on the geometry and material of the body. The inductance can be increased and thus adjusted primarily by a material with a high permeability µ _r and by a body with a large axial length.

The individual body made of magnetizable material is preferably as a body that can be separated from the respective electrical main conductor, ie as a body on the respective Electrical main conductor axially displaceable body that can be linearly guided by the respective electrical main conductor. Alternatively, the individual body made of magnetizable material can also be designed as a coating of the respective electrical main conductor with a magnetizable coating material. In the latter case, the body made of magnetizable material is cohesively connected to the respective electrical main conductor. Finally, the body can also be made from magnetizable material by casting the individual electrical conductor.

Advantageous refinements and further developments result from the further subclaims and from the description with reference to the figures in the drawing.

It is understood that the features mentioned above and those to be explained below can be used not only in the combination specified in each case, but also in other combinations or alone, without departing from the scope of the present invention.

In a first embodiment of a body made of magnetizable material, the body is sleeve-shaped. Each electrical main conductor, at least in the first section or in the second section, is enclosed by an associated sleeve-shaped body made of a magnetizable material, in which an associated magnetic flux path can form when current flows.

In a second embodiment of a body made of magnetizable material, the body has two passages in the longitudinal axis direction and is therefore designed as a double-hole body or designed as a double hole core. The first electrical main conductor is passed through one bushing and the second main electrical conductor is passed through the other bushing. In the web area of the double hole body between the first and second electrical main conductors, the two magnetic fluxes of the first and second electrical main conductors constructively superimpose on each other due to the differential signal.

Preferably, the cross section of the magnetizable body has a round outer profile in the first embodiment and an elliptical or oval outer profile in the second embodiment. However, a rectangular external profile, in particular a square external profile, or a polygonal external profile is also conceivable. The inner profile of the magnetizable body is geometric and its size is adapted to the first or the two main electrical conductors.

The connection arrangement preferably has a housing in which at least the differential main conductor section is arranged. Three feedthroughs can preferably be provided in the housing, through which the first section and the second section of the differential main conductor section and the electrical connection to the bus subscriber are passed.

With a view to easy assembly, the housing is preferably composed in several parts from several housing shells, in particular in two parts from two housing shells. The housing serves to guide the individual conductors, ie the first and second main conductors and optionally the first and second branch conductors. The housing also seals the contact elements against moisture and dirt from outside. Finally, the housing can also axially fix the individual magnetizable bodies, which are displaceable on the individual electrical conductors, in a specific axial position relative to the individual electrical conductors, for example by means of strut-shaped formations in the housing shells. A cohesive radial fixing can take place, for example, by gluing or a non-positive radial fixing by pressing the magnetizable bodies into the housing.

The housing can preferably be made of an electrically insulating material. To implement a shielded bus system, the housing can also be made of metal or have a metal coating. Metallic shielding plates can also be arranged in an electrically insulating housing, into which external conductor contact elements of the differential bus connector are formed at the individual plug interfaces.

In a further preferred embodiment of a magnetizable body, the magnetizable body is designed in several parts. The magnetizable body is therefore composed of several partial bodies, in particular two partial bodies, each of which extends over a different angular segment relative to a longitudinal axis of the magnetizable body. The individual partial bodies are each fixed in an associated housing part or an associated housing shell of the housing.

The technical advantage of such a design of a magnetizable body is that the individual magnetizable bodies do not have to be "threaded" via the individual electrical conductors, but rather into them in advance associated housing shell can be inserted and fastened therein. Retrofitting a differential bus system with magnetizable bodies is therefore easily possible without disconnecting the differential bus line system simply by replacing the housing. Such a multi-part solution for a magnetizable body can be implemented for both the sleeve-shaped variant and the double-hole variant of the body. In order to avoid gaps between the partial bodies, which can reduce the inductance and thus cause incorrect compensation, attention must be paid to high-precision individual part production and assembly.

In order to increase precision, instead of individual partial bodies being fixed in associated housing shells, correspondingly shaped areas of the housing shell can be coated with a magnetizable material in a further preferred embodiment.

If the first electrical main conductor and the second electrical main conductor are each encased by a magnetizable body in both the first section and the second section of the differential main conductor section, then in a further embodiment of a magnetizable body for the first and second electrical main conductors, the magnetizable ones can each be used Body in the first and second section of the differential main conductor section can be combined into a single magnetizable body. This embodiment can be used advantageously in particular for the variant in which the magnetizable body is realized by coating the housing shells with a magnetizable coating material.

This feature can also be easily implemented with a first or a second main conductor, each of which is designed as a contact element and in which a contact socket is designed as a first or as a second connection for electrical connection to a bus participant. In this case, only one through hole is required in the common magnetizable body to carry out the electrical connection to the bus participant.

In a first embodiment of a connection arrangement, a first cutting edge of a first insulation displacement terminal is electrically connected to the first connection of the first electrical main conductor. Equivalently, a second cutting edge of a second insulation displacement terminal is electrically connected to the second connection of the second electrical main conductor.

The first cutting edge of the first insulation displacement terminal and the second cutting edge of the second insulation displacement terminal cut through the insulation of the first main conductor or the second main conductor and thus contact the first main electrical conductor in the first connection or the second main electrical conductor in the second connection. The common LSA insulation displacement terminal technology (without soldering, screwing or stripping) is ideal in terms of the intended simplification of production.

The first insulation displacement terminal also has a first contact connection, which is preferably connected in one piece to the first cutting edge and is designed to be electrically connectable to a first mating connection of a bus participant. Equivalently, the second insulation displacement terminal has a second contact connection, which is preferably connected in one piece to the second cutting edge and is set up with to be electrically connectable to a second mating connection of a bus participant. The first and second contact connections of the first insulation displacement terminal and the second insulation displacement terminal respectively represent contact elements of a differential plug interface, which each contact mating contact elements of a mating plug connector of the bus subscriber. Alternatively, the contact elements of the differential plug interface can also contact mating contact elements of a mating plug connector, which is electrically connected to a differential stub line, which in turn can be connected to the bus subscriber via an electrical plug connection. Finally, in a further variant, the first and the second contact connection of the first insulation displacement terminal or the second insulation displacement terminal can each be electrically connected to stripped stub lines, ie to a first electrical stub conductor or to a second electrical stub conductor, preferably via a crimp or a plug-in terminal connection . Such a differential branch line can in turn be electrically connected to the bus subscriber via an electrical plug connection. The last variant in particular represents the simplest implementation in terms of production technology of a connection arrangement implemented as a T-member between the main line and the respective bus subscriber of a differential bus system.

In the first embodiment of a connection arrangement according to the invention using insulation displacement technology, sleeve-shaped magnetizable bodies preferably enclose the first main line section and the second main line section at least in the first section or in the second section.

In a second embodiment of a connection arrangement, the connection arrangement according to the invention is implemented as a differential bus connector of the differential bus system. The first electrical main conductor of the differential main conductor section of the connection arrangement is designed as a first contact element of the differential bus connector. Equivalently, the second electrical main conductor of the differential main conductor section is designed as a second contact element of the differential bus connector.

In a preferred embodiment of the second embodiment, the differential bus connector has a first and a second three-armed contact element. The first and second electrical main conductors in the first section of the differential main conductor section of the connection arrangement each form a first contact arm of the first and second three-armed contact elements. The first and second electrical main conductors in the second section of the differential main conductor section of the connection arrangement each form a second contact arm of the first and second three-armed contact elements, and the first and second electrical stub conductors of the connection arrangement each form a third contact arm of the first and second three-armed contact elements contact element. The first and second three-armed contact elements can each be T-shaped, F-shaped or Y-shaped. The first and second three-armed contact elements can each be made in one piece or in several parts, for example in two parts. In the case of a multi-part design, the individual contact arms of the first or second three-armed contact element can be connected to one another, for example via a screw or press connection.

The contacting between the differential bus connector and the associated differential mating connectors is carried out using common contacting technologies from connector technology, i.e. H. preferably via radial contact or alternatively via end contact.

The first and second contact elements are each enveloped by a magnetizable body at least in the first section or in the second section. In the case of three-armed contact elements, at least the first contact arms or the second contact arms of the first and second three-armed contact elements are each enveloped by a magnetizable body. At the axial ends of the first and second contact elements, contact is made with mating contact elements of associated mating connectors.

In addition to the three-armed contact elements, linearly shaped contact elements are also conceivable, in which contact with the mating connectors takes place at the axial ends and in a central region, preferably in the middle, of the contact element:
The first and second electrical main conductors of the first section of the connection arrangement each form a contact element section from an axial end to the middle region, preferably to the middle, of the respective linearly shaped contact element. The first and second electrical main conductors of the second section of the connection arrangement each form a contact element section from the central region, preferably from the middle, to the other axial end of the respective linearly shaped contact element.

In this case, the differential stub conductor section with the first electrical stub conductor and the second electrical stub conductor is implemented outside the differential bus connector. The differential stub conductor section is composed of the mating contact elements of the differential mating connector, which contact the two linearly shaped contact elements of the differential bus connector in the central region, preferably in the middle, and the stub conductors connected to the mating contact elements, which each lead to the bus subscriber.

To contact the linear contact elements of the differential bus connector with the associated mating contact elements of the differential mating connector, blind holes are preferably formed in a central region, preferably in the middle, of the contact elements, into which the pin-shaped mating contact elements can each be inserted.

At least the contact element section between the one axial end and the middle region, preferably the middle, of the two linear contact elements or the contact element section between the middle and the other axial end of the two linear contact elements are each enveloped by a magnetizable body.

The first and second contact elements can each be manufactured using machining (turning, milling) or using punching and bending technology.

In addition to a differential bus connector, the invention also includes the connection arrangement according to the invention also covers a differential connector arrangement consisting of a differential bus connector and at least one differential mating connector, which can be plugged into one of the three connector interfaces of the differential bus connector with the differential bus connector. The technical features disclosed so far and below for the connection arrangement and the differential bus connector also apply analogously to the differential connector arrangement.

In a further preferred embodiment of a differential connector arrangement, the magnetizable bodies can not be arranged within the differential bus connector, but rather be guided via the mating contact elements of at least one differential mating connector, which is connected to the first section or to the second section of the differential main conductor section of the differential bus connector .

In this case too, the first and second electrical main conductors of the connection arrangement are each enclosed by a magnetizable body. The technical features of the connection arrangement and the differential bus connector already and disclosed below also apply analogously to the differential mating connector.

Finally, it should be mentioned that the individual magnetizable bodies can also be located outside the housing of a differential bus connector, outside the housing of an electrical differential connector designed with insulation displacement terminals or outside the differential connector arrangement can each be guided via the first and second electrical main conductors.

The above configurations and further developments can be combined with one another in any way, if it makes sense. Further possible refinements, further developments and implementations of the invention also include combinations of features of the invention described previously or below with regard to the exemplary embodiments that are not explicitly mentioned. In particular, the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the present invention.

CONTENTS OF THE DRAWING

• Fig. 1A eine Darstellung eines Leitungsmodells für ein differentielles Bussystem nach dem Stand der Technik,
• Fig. 1B eine Darstellung eines Leitungsmodells für ein differentielles Bussystem mit Kompensation einer parasitären Kapazität nach dem Stand der Technik,
• Fig. 2A eine isometrische Darstellung einer erfindungsgemäßen Verbindungsanordnung mit einer ersten Ausprägung von magnetisierbaren Körpern,
• Fig. 2B eine isometrische Darstellung einer erfindungsgemäßen Verbindungsanordnung mit einer zweiten Ausprägung von magnetisierbaren Körpern,
• Fig. 3A eine Explosionsdarstellung einer als differentieller Bussteckverbinder realisierten erfindungsgemäßen Verbindungsanordnung,
• Fig. 3B eine Schnittdarstellung einer als differentieller Bussteckverbinder realisierten erfindungsgemäßen Verbindungsanordnung,
• Fig. 4A eine Explosionsdarstellung einer als differentieller Bussteckverbinder realisierten erfindungsgemäßen Verbindungsanordnung mit mehrteiligen magnetisierbaren Körpern,
• Fig. 4B eine Schnittdarstellung einer als differentieller Bussteckverbinder realisierten erfindungsgemäßen Verbindungsanordnung mit mehrteiligen magnetisierbaren Körpern,
• Fig. 5A eine Schnittdarstellung einer mit Schneidklemmen realisierten erfindungsgemäßen Verbindungsanordnung,
• Fig. 5B eine Explosionsdarstellung einer mit Schneidklemmen realisierten erfindungsgemäßen Verbindungsanordnung im nicht montierten Zustand,
• Fig. 5C eine Explosionsdarstellung einer mit Schneidklemmen realisierten erfindungsgemäßen Verbindungsanordnung im halb montierten Zustand,
• Fig. 6A eine Explosionsdarstellung einer erfindungsgemäßen Steckverbinderanordnung im halb montierten Zustand und
• Fig. 6B eine Schnittdarstellung einer erfindungsgemäßen Steckverbinderanordnung.

The present invention is explained in more detail below using the exemplary embodiments given in the schematic figures of the drawing. It shows:

• Fig. 1A a representation of a line model for a differential bus system according to the state of the art,
• Fig. 1B a representation of a line model for a differential bus system with compensation for a parasitic capacitance according to the prior art,
• Fig. 2A an isometric representation of a connection arrangement according to the invention with a first form of magnetizable bodies,
• Fig. 2B an isometric representation of a connection arrangement according to the invention with a second form of magnetizable bodies,
• Fig. 3A an exploded view of a connection arrangement according to the invention implemented as a differential bus connector,
• Fig. 3B a sectional view of a connection arrangement according to the invention implemented as a differential bus connector,
• Fig. 4A an exploded view of a connection arrangement according to the invention implemented as a differential bus connector with multi-part magnetizable bodies,
• Fig. 4B a sectional view of a connection arrangement according to the invention implemented as a differential bus connector with multi-part magnetizable bodies,
• Fig. 5A a sectional view of a connection arrangement according to the invention realized with insulation displacement terminals,
• Fig. 5B an exploded view of a connection arrangement according to the invention realized with insulation displacement terminals in the unassembled state,
• Fig. 5C an exploded view of a connection arrangement according to the invention realized with insulation displacement terminals in the half-assembled state,
• Fig. 6A an exploded view of a connector arrangement according to the invention in the half-assembled state and
• Fig. 6B a sectional view of a connector arrangement according to the invention.

The accompanying figures of the drawing are intended to provide a further understanding of the embodiments of the invention. They illustrate embodiments and, in connection with the description, serve to explain principles and concepts of the invention. Other embodiments and many of the advantages mentioned arise with regard to the drawings. The elements of the drawings are not necessarily shown to scale to one another.

In the figures of the drawing, identical, functionally identical and identically acting elements, features and components - unless otherwise stated - are each provided with the same reference numerals.

The figures are described in a coherent and comprehensive manner below.

DESCRIPTION OF EMBODIMENTS

In the Figures 2A and 2B a connection arrangement 1 is shown for a differential bus system. The connection arrangement 1 is composed of a differential main conductor section 2 and a differential stub conductor section 3. The differential main conductor section 2 is in turn composed of a first main conductor 2 ₁ and a second main conductor 2 ₂ . The differential stub conductor section 3 is in turn composed of a first stub conductor 3 ₁ and a second stub conductor 3 ₂ . The first stub conductor 3 ₁ is connected to the first main conductor 2 ₁ in a first connection 4 ₁ of the first main conductor 2 ₁ between a first section 5 ₁ and a second section 5 ₂ of the differential main conductor section 2.

Equivalently, the second stub conductor 3 ₂ is connected to the second main conductor 2 ₂ in a second connection 4 ₂ of the second main conductor 2 ₂ between the first section 5 ₁ and the second section 5 ₂ of the differential main conductor section 2.

The differential branch conductor section 3 is connected either directly or indirectly via a further differential line section to a differential input of an electrical assembly, which is connected to a bus subscriber TN (cf. Figures 1A and 2A ) of the differential bus system is assigned. The first subsection 5 ₁ and the second subsection 5 ₂ of the differential main conductor section 2 are each electrically connected to further bus participants TN of the differential bus system via further connection arrangements or are alternatively terminated with an adapted impedance.

The first main conductor 2 ₁ and the second main conductor 2 ₂ are according to Fig. 2A in the first section 5 ₁ and in the second section 5 ₂ of the differential main conductor section 2 each surrounded by a body 6 made of a magnetizable material. The body 6 is preferably made of a ferrite material. In the representation in Fig. 2A the magnetizable body 6 is sleeve-shaped and encloses only a single main conductor 2 ₁ or 2 ₂ . In addition, the first main conductor is 2 ₁ and the second main conductor is 2 ₂ in Fig. 2A each enclosed in the first section 5 ₁ and in the second section 5 ₂ by a sleeve-shaped magnetizable body 6. A variant is also conceivable in which the first main conductor 2 ₁ and the second main conductor 2 ₂ each only in the first section 5 ₁ or are enclosed only in the second section 5 ₂ by a magnetizable body 6.

Out of Fig. 2B a second form of a magnetizable body 6 emerges, which encloses the first main conductor 2 ₁ and the second main conductor 2 ₂ together. For this purpose, the magnetizable body 6 has two axial bushings 7 through which the first main conductor 2 ₁ and the second main conductor 2 ₂ are passed.

From the Figures 3A and 3B shows an embodiment of a connection arrangement 1 for a differential bus system, which is designed as a differential bus connector 8. For this purpose, the differential bus connector 8 has a first contact element 9 ₁ and a second contact element 9 ₂ , which are each designed with three arms and each serve as inner conductor contact elements. The axial ends of the three contact arms of the first and second contact elements 9 ₁ and 9 ₂ each form a contact area K ₁₁ , K ₂₁ , K ₁₂ , K ₂₂ , K ₃₁ and K ₃₂ for electrical contact with an associated mating contact element of a differential mating connector.

The contact arms of the first and second contact elements 9 ₁ and 9 ₂ , which are located in the differential main conductor section 2 between the contacting area K ₁₁ and K ₂₁ and the first connection 4 ₁ and the second connection 4 ₂ , respectively, form the first main conductor 2 ₁ and the second main conductor 2 ₂ in the first section 5 ₁ of the connection arrangement 1. The contact arms of the first and second contact elements 9 ₁ and 9 ₂ , which are in the differential main conductor section 2 between the contacting area K ₁₂ or 10 ₂₂ and the first connection 4 ₁ or the second connection 4 ₂ are located each the first main conductor 2 ₁ and the second main conductor 2 ₂ in the second section 5 ₂ of the connection arrangement 1. The contact arms of the first and second contact elements 9 ₁ and 9 ₂ , which are in the differential stub conductor section 3 between the contacting area K ₁₃ and K ₂₃ , respectively and the first connection 4 ₁ and the second connection 4 ₂ , respectively, form the first stub conductor 3 ₁ and the second stub conductor 3 ₂ of the connection arrangement 1.

In the representation of the Fig. 3A and 3B In the first section 5 ₁ and in the second section 5 ₂ of the differential main conductor section 2, the contact arms of the three-armed contact elements 9 ₁ and 9 ₂ are each surrounded by a common magnetizable body 6.

To implement a shielded differential bus system, a shielding and an external conductor contact are formed at the connector interfaces in the differential bus connector 8:
To shield the differential bus connector 8, two metallic outer conductor shells 10 ₁ and 10 ₂ are preferably provided, which are designed to be connectable to one another and thus completely enclose the first and second contact elements 9 ₁ and 9 ₂ . For outer conductor contact with an associated outer conductor mating contact element of a differential mating connector or with an outer conductor of a shielded differential line, outer conductor contact areas 11 ₁ , 11 ₂ and 11 ₃ are formed on the two metallic outer conductor shells 10 ₁ and 10 ₂ at the three connector interfaces.

For electrical insulation between the differential inner conductor contacting areas K from one another and from the outer conductor contacting areas 11, insulator elements 12 ₁ , 12 ₂ and 12 ₃ are arranged at the three connector interfaces.

The connection arrangement 1 or the differential bus connector 8 has a housing 13 with preferably two housing shells 13 ₁ and 13 ₂ that can be fastened to one another. The two outer conductor shells 11 ₁ and 11 ₂ are inserted and fixed into the housing 13. The connection arrangement 1 according to the invention, ie the first and second contact elements 9 ₁ and 9 ₂ of the differential bus connector 8 with _the associated magnetizable bodies 6, is inserted into the two outer conductor shells 11 1 and 11 2 and _is connected via the insulator elements 12 ₁ , 12 ₂ and 12 ₃ fixed. For contacting the differential bus connector 8 with associated differential mating connectors, associated bushings 14 ₁ , 14 ₂ , 14 ₃ are formed in the housing.

From the Fig. 4A and 4B shows a further embodiment of a connection arrangement 1 for a differential bus system, which is implemented as a differential bus connector 8. The differential bus system as well as the differential bus connector 8 shown is not designed to be shielded and therefore does not have any metallic outer conductor shells 10 ₁ and 10 ₂ .

The magnetizable bodies 6 are designed in two parts and each have a first magnetizable partial body 6 ₁ and a second magnetizable partial body 6 ₂ . The magnetizable partial bodies 6 ₁ and 6 ₂ are in an associated electrically insulating housing shell 13 ₁ or 13 ₂ fixed. An axial fixation of the two magnetizable partial bodies 6 ₁ and 6 ₂ is achieved by means of struts 15 formed in the housing shells 13 ₁ and 13 _2. Radial fixation can be achieved by adjusting the inside diameter of the bushings 7 of the two magnetizable bodies 6 to the outside diameter of the realize the first and second contact elements 9 ₁ and 9 ₂ . The struts 15 additionally serve to guide the first and second contact elements 9 ₁ and 9 ₂ within the differential bus connector 8.

In a further embodiment of a non-shielded connection arrangement 1 according to Figs. 5A to 5C The contact is made between the first main conductor 2 ₁ and the first stub conductor 3 ₁ and between the second main conductor 2 ₂ and the second stub conductor 3 ₂ via a first insulation displacement terminal 16 ₁ or a second insulation displacement terminal 16 ₂ :
The strands of a first main line 17 ₁ and a second main line 17 ₂ form the first main conductor 2 ₁ and the second main conductor 2 ₂ of the connection arrangement 1. The first main line 17 ₁ and the second main line 17 ₂ are surrounded, for example, by a cable sheath 18 and exposed in the area of the connection arrangement 1 by the cable jacket 18.

In this embodiment, a first contact connection 27 ₁ and a second contact connection 27 ₂ , each connected in one piece to the first insulation displacement terminal 16 ₁ and to the second insulation displacement terminal 16 ₂ , form the first stub conductor 3 ₁ and the second stub conductor 3 ₂ , respectively. The first and second insulation displacement terminals 16 ₁ and 16 ₂ cut through the insulation of the first and second with their first cutting edge 28 ₁ and second cutting edge 28 ₂ , respectively Main line section 17 ₁ and 17 ₂ , so that an electrical contact between the strands of the first and second main line sections 17 ₁ and 17 ₂ and the first contact connection 27 ₁ and the second contact connection 27 ₂ is realized. The first and second contact connections 27 ₁ and 27 ₂ form a differential and unshielded plug interface of a connection arrangement 1 implemented as a differential bus plug connector 8. A mating plug connector designed at the differential input of the bus subscriber TN can be plugged into this differential plug interface. Alternatively, the first and second contact connections 27 ₁ and 27 ₂ can each be electrically connected to the strands of a differential branch line 3, which in turn can be electrically connected to a bus subscriber TN, for example via a plug connection.

In a further embodiment of a connection arrangement 1 according to Fig. 6A and 6B a differential connector arrangement 19 is provided, which is composed of a differential bus connector 8 and, for example, three corresponding differential mating connectors 20. The magnetizable bodies 6 are not arranged within the differential bus connector 8, but in a first differential mating connector 20 ₁ and in a second differential mating connector 20 ₂ . The first differential mating connector 20 ₁ forms an electrical plug connection with the differential bus connector 8 in the first section 5 ₁ of the differential main conductor section 2. The second differential mating connector 20 ₂ forms an electrical plug connection with the differential bus connector 8 in the second section 5 ₁ of the differential main conductor section 2.

The two mating contact elements 21 ₁ and 21 ₂ of the first differential mating connector 20 ₁ and the two mating contact elements 22 ₁ and 22 ₂ of the second differential mating connector 20 ₂ are each enclosed by a magnetizable body 6. The two mating contact elements 21 ₁ and 21 ₂ of the first differential mating connector 20 ₁ are electrically connected to a first main conductor 24 ₁ or a second main conductor 24 ₂ of a differential main line section 23 ₁ of the differential bus system, for example via a crimp connection. The two mating contact elements 22 ₁ and 22 ₂ of the second differential mating connector 20 ₂ are equivalently electrically connected to a first main conductor 25 ₁ or a second main conductor 25 ₂ of a further differential main line section 23 ₂ of the differential bus system. The two mating contact elements 21 ₁ and 21 ₂ of the first differential mating connector 20 ₁ and the two mating contact elements 22 ₁ and 22 ₂ of the second differential mating connector 20 ₂ are each with the associated magnetizable body 6 in a connector housing 26 ₁ and 26 ₂ of the first and the second differential mating connectors 20 ₁ and 20 ₂ arranged and fixed therein, for example by means of an adhesive.

Although the present invention has been fully described above using preferred exemplary embodiments, it is not limited to this but can be modified in a variety of ways.

Claims (15)

Connection arrangement (1) for electrically connecting a bus subscriber (TN) to a differential bus system a differential main conductor section (2) with a first electrical main conductor (2 ₁ ) and a second electrical main conductor (2 ₂ ), wherein the differential main conductor section (2) has a first section (5 ₁ ) and a second section (5 ₂ ) electrically connected to the first section (5 ₁ ), wherein in the first electrical main conductor (2 ₁ ) between the first section (5 ₁ ) and the second section (5 ₂ ) there is a first connection (4 ₁ ) for electrically connecting to a first mating connection of the bus subscriber (TN) and in the second electrical main conductor ( 2 ₂ ) a second connection (4 ₂ ) is formed between the first section (5 ₁ ) and the second section (5 ₂ ) for electrical connection to a second mating connection of the bus subscriber (TN), wherein the first and second electrical main conductors (2 ₁ , 2 ₂ ) are each enclosed by a body (6; 6 ₁ , 6 ₂ ) made of a magnetizable material at least in the first section (5 ₁ ) or in the second section (5 ₂ ). . Connection arrangement (1) according to claim 1,
characterized,
that the body (6; 6 ₁ , 6 ₂ ) is sleeve-shaped with a bushing (7) for passing through the first main electrical conductor (2 ₁ ) in the first section (5 ₁ ), the second main electrical conductor (2 ₂ ) in the first section (5 ₁ ), the first electrical main conductor (2 ₁ ) in the second section (5 ₂ ) or the second electrical main conductor (2 ₂ ) is formed in the second section (5 ₂ ). Connection arrangement (1) according to claim 1,
characterized,
that the body (6; 6 ₁ , 6 ₂ ) has two bushings (7) in a longitudinal axis direction for passing through the first and second electrical main conductors (2 ₁ , 2 ₂ ) in the first section (5 ₁ ) or for passing through the first and second electrical main conductors (2 1 , 2 2 ). second electrical main conductor (2 ₁ , 2 ₂ ) in the second section (5 ₂ ). Connection arrangement (1) according to one of claims 1 to 3,
characterized,
that the connection arrangement (1) has a housing (13) in which the differential main conductor section (2) is arranged and which each has a feedthrough (14 ₁ , 14 ₂ , 14 ₃ ) for the first section (5 ₁ ) and for the second Section (5 ₂ ) and for the electrical connection to the first mating connection or to the second mating connection. Connection arrangement (1) according to claim 4,
characterized,
that the body (6; 6 ₁ , 6 ₂ ) is composed of several partial bodies (6 ₁ , 6 ₂ ), preferably of two partial bodies (6 ₁ , 6 ₂ ), each of which extends over a different angular segment relative to a longitudinal axis of the Body (6; 6 ₁ , 6 ₂ ) extend. Connection arrangement (1) according to claim 5,
characterized,
that each partial body (6 ₁ , 6 ₂ ) is fixed in an associated housing part (13 ₁ , 13 ₂ ) of the housing (13). Connection arrangement (1) according to one of claims 1 to 6,
characterized,
that the body (6; 6 ₁ , 6 ₂ ) is designed as a coating or as a potting on the first main electrical conductor (2 ₁ ) and on the second main electrical conductor (2 ₂ ). Connection arrangement (1) according to one of claims 1 to 7,
characterized,
in that the connection arrangement (1) additionally has a first electrical stub conductor (3 ₁ ) and a second electrical stub conductor (3 ₂ ), wherein the first electrical stub conductor (3 ₁ ) is connected to the first connection (4 ₁ ) and is set up with to be connectable to the first mating connection, and the second electrical branch conductor (3 ₁ ) is connected to the second connection (4 ₂ ) and is set up to be connectable to the first mating connection. Connection arrangement (1) according to one of claims 1 to 7,
characterized,
that the first and the second electrical main conductor (2 ₁ , 2 ₂ ) are each designed as an electrical conductor of a first and a second main line section (17 ₁ , 17 ₂ ), wherein the connection arrangement (1) has a first insulation displacement terminal (16 ₁ ) and a second insulation displacement terminal (16 ₂ ), wherein the first insulation displacement terminal (16 ₁ ) has a first cutting edge (28 ₁ ), which electrically contacts the first connection (4 ₁ ), and a first contact terminal (27 ₁ ) for electrically connecting to the first mating terminal, wherein the second insulation displacement terminal (16 ₂ ) has a second cutting edge (28 ₂ ) which electrically contacts the second terminal (4 ₂ ), and a second contact terminal (27 ₂ ) for electrical connection to the second mating connection. Connection arrangement (1) according to claim 9,
characterized,
that the first main line section (17 ₁ ) and the second main line section (17 ₂ ) are each enclosed by the body (6; 6 ₁ , 6 ₂ ) at least in the first section (5 ₁ ) or in the second section (5 ₂ ). Electrical differential bus connector (8) for a differential bus system having a connection arrangement (1) according to one of claims 1 to 10, wherein the first electrical main conductor (2 ₁ ) as a first contact element (9 ₁ ) and the second electrical main conductor (2 ₂ ) are designed as a second contact element (9 ₂ ). Electrical differential bus connector (8) according to claim 11,
characterized,
that the first and second contact elements (9 ₁ , 9 ₂ ) are each enclosed by the body (6; 6 ₁ , 6 ₂ ) at least in the first section (5 ₁ ) or in the second section (5 ₂ ). Electrical differential connector arrangement (19) for a differential bus system, comprising an electrical differential bus connector (8) according to claim 11 or 12, a first and a second electrical differential mating connector (20 ₁ , 20 ₂ ) each with two mating contact elements (21 ₁ , 21 ₂ , 22 ₁ , 22 ₂ ), the two mating contact elements (21 ₁ , 21 ₂ ) of the first differential mating connector (20 ₁ ) each being the first and the second contact element (9 ₁ , 9 ₂ ) in the first section (5 ₁ ) and the two mating contact elements (22 ₁ , 22 ₂ ) of the second differential mating connector (20 ₂ ) each the first and the second contact element (9 ₁ , 9 ₂ ) contact electrically in the second section (5 ₂ ). Electrical differential connector arrangement (19) according to claim 13,
characterized,
that the mating contact elements (21 ₁ , 21 ₂ , 22 ₁ , 22 ₂ ) of at least the first differential mating connector (20 ₁ ) or the second differential mating connector (20 ₂ ) are each enclosed by the body (6; 6 ₁ , 6 ₂ ). Electrical differential mating connector (20 ₁ , 20 ₂ ) of an electrical differential connector arrangement (19) according to one of claims 13 or 14.

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