Connection assembly for electrically connecting bus subscriber to differential bus system

Abstract

The invention relates to a connection assembly for electrically connecting a bus subscriber to a differential bus system. The invention also relates to a differential plug connector assembly, a differential bus plug connector and a corresponding differential mating plug connector. A connection assembly (1) for electrically connecting a bus subscriber (TN) to a differential bus system comprises a differential main conductor portion (2) having a first electrical main conductor (21) and a second electrical main conductor (22). The differential main conductor portion (2) has a first sub-portion (51) and a second sub-portion (52) electrically connected to the first sub-portion (51). A first terminal (41) for electrically connecting to a first mating terminal of the bus subscriber (TN) is formed in the first electrical main conductor (21) between the first sub-part (51) and the second sub-part (52), and a second terminal (42) for electrically connecting to a second mating terminal of the bus subscriber (TN) is formed in the second electrical main conductor (22) between the first sub-part (51) and the second sub-part (52). The first and second electrical main conductors (21, 22) at least in the first sub-portion (51) or in the second sub-portion (52) are surrounded by the body (6; 61, 62), in each case made of a magnetizable material.

Description

Technical Field

[0001] The present application claims priority from European Patent Application No. 22190226.5, the contents of which are incorporated herein by reference in their entirety.

[0002] The invention relates to a connecting assembly for electrically connecting a bus subscriber to a differential bus system, which has the features of patent claim 1 .

[0003] The invention also relates to a differential electrical bus plug connector for a differential bus system, which has the features of patent claim 11 or 12.

[0004] The invention further relates to a differential electrical plug connector assembly for a differential bus system, which has the features of patent claim 14 or 15 . Background Art

[0005] Differential bus systems are used in many fields of application, for example in industry, the automotive sector or in offices, for data transmission between a plurality of bus users. The conductor system of a differential bus system essentially comprises a differential main conductor, from which corresponding differential spurs branch to each bus user. Alternatively, the bus users can also be connected directly to the differential main conductor without the interposition of differential spurs. Both shielded and unshielded conductors are employed.

[0006] FIG1A shows an equivalent circuit layout of a differential bus system. The transmission characteristics of a differential bus system are not only determined by the ohmic linear constant R of the individual conductor segments, but also by the H and G H , Capacitance linear constant C H and the linear electrical constant of the inductance L H Initially, we also start with the input impedance of each bus user TN. The input impedance of the bus user TN (ie the electronic components) starts from the equivalent circuit layout, which includes the ohmic input resistance R at the differential input of the bus user TN. dev , parasitic capacitance C dev and parasitic inductance L dev In the equivalent circuit arrangement according to FIG. 1A , the bus subscriber TN represented in the left half is directly connected to the main conductor of the bus system, while the bus subscriber TN represented in the right half is connected via a bus with an ohmic linear line constant R S and G S , capacitance linear constant C S and the inductor linear constant L S The branch lines are connected to the main conductor of the bus system.

[0007] Specifically, the parasitic capacitance C on the differential input of the electronic component is caused by the parasitic characteristics of the actual components of the electronic component relative to the technical characteristics of the associated ideal components. dev The characteristic wave impedance of the differential bus is significantly distorted. In order to improve the transmission characteristics of the bus system according to FIG. 1B , the parasitic capacitance C dev The additional inductance L in the two main conductors of the differential bus system can be C To this end, usually corresponding conductor sections of the differential conductor system are interrupted and in each case discrete inductive components, preferably discrete coils, are integrated therein and connected to the respectively adjoining conductor sections by soldering.

[0008] The soldering process is a relatively complex and therefore expensive production method. The risk of bad solder joints (ie "cold solder joints") should not be underestimated and may lead to additional increases in production costs associated with reworking.

[0009] This is a situation that needs improvement.

[0010] US2019 / 0109417 A1 discloses a plug connector having a housing that can be assembled to a mating housing of a mating plug connector, having a plurality of terminals held by the housing and electrically connected to each other, and having a noise reduction element held in the housing to reduce noise generated in the terminals. The noise reduction element is arranged on at least one terminal and is not arranged on at least one of the remaining terminals of the plurality of terminals. The noise reduction element is made of a material containing ferrite. Summary of the invention

[0011] In this context, the basic object of the invention is to disclose a technical compensation facility in a differential bus system for parasitic capacitances present at the differential inputs of the bus users, which facility can be produced using cost-effective production technology and improves the high-frequency transmission behavior of the differential bus system.

[0012] According to the invention, this object is achieved by a connecting assembly for electrically connecting a bus participant to a differential bus system having the features of patent claim 1 .

[0013] Provide the following accordingly:

[0014] A connection assembly for electrically connecting a bus user to a differential bus system, comprising

[0015] Differential main conductor section,

[0016] The differential main conductor section has a first main electrical conductor, and

[0017] The second main electrical conductor,

[0018] The differential main conductor includes a first subsection, and

[0019] a second subsection, the second subsection being electrically connected to the first subsection,

[0020] wherein, in the first main electrical conductor, between the first subsection and the second subsection, a first terminal for electrical connection to a first mating terminal of a bus user is arranged, and

[0021] In the second main electrical conductor, between the first subsection and the second subsection, a second terminal is configured for electrical connection to a second mating terminal of the bus user,

[0022] In the second main electrical conductor, between the first subsection and the second subsection, a second terminal is configured for electrical connection to a second mating terminal of the bus user,

[0023] wherein the connection assembly comprises a first electrical branch conductor and a second electrical branch conductor, wherein the first electrical branch conductor is connected to the first terminal and is designed to be connectable to the first mating terminal, and the second electrical branch conductor is connected to the second terminal and is designed to be connectable to the second mating terminal, and

[0024] Therein, at least one of the first main electrical conductor and the second main electrical conductor in the first subsection or in the second subsection is respectively surrounded by a body of magnetizable material.

[0025] In particular, preferably, both terminals are not surrounded by another body of magnetizable material.Thus, for example, the branches are preferably not surrounded by another body of magnetizable material.

[0026] According to the basic concept of the invention, instead of discrete inductive components in a specific conductor section of a differential bus system, the conductor section is surrounded by a body of magnetizable material. The inductive linear constant of the conductor section can be increased by surrounding the conductor section in a body of magnetizable material. In particular, the increase in the inductance of the conductor section can be adjusted in a targeted manner by a suitable geometry and a suitable material selection for the body of magnetizable material. Thus, advantageously, parasitic capacitances at the differential inputs of the bus users can be compensated by the body of magnetizable material.

[0027] Furthermore, instead of interrupting the conductor segments, inserting the discrete inductive component into the interrupted conductor segments and connecting the discrete inductive component to the interrupted conductor segments by welding, only a simple assembly process is required, wherein a body of magnetizable material is introduced over the conductor segments.

[0028] In order to particularly advantageously compensate for parasitic capacitances at the differential inputs of the bus subscribers, a body of magnetizable material is preferably introduced onto the conductor section of the differential bus system which is closest to the respective bus subscriber.

[0029] A bus system is an arrangement of conductors used in common by a plurality of bus users connected to the bus system for the purpose of data transmission. The conductor arrangement usually comprises a main line (trunk) and a plurality of branch lines (short lines), which branch from the main line and are respectively connected to the associated bus users. A direct connection of a bus user to the main line is also conceivable. The main line preferably adopts a linear structure. In a linear structure, the two ends of the main line can be respectively connected to appropriate impedances in order to prevent any undesired reflections of high-frequency signals transmitted via the bus system. However, in addition to a linear structure, other structures of the main line are also conceivable, such as a ring structure or a "tree" structure.

[0030] For the sake of interference immunity, in particular during the transmission of high-frequency signals, prior art transmission systems (e.g. USB, Ethernet, HDMI, SATA, etc.) are configured differently. They adopt a differential conductor arrangement, in which differential signals are transmitted. Therefore, the differential conductor arrangement comprises a main line, which has a first main electrical conductor and a second main electrical conductor, and optionally a plurality of branch lines, which have corresponding first electrical branch line conductors and corresponding second electrical branch line conductors.

[0031] In this context, it should be observed that the terms "first main electrical conductor", "second main electrical conductor" and "differential main conductor section" may in the present case and hereinbelow be understood specifically as electrical conductors of a differential main line (e.g. twisted wires), i.e. electrical conductors of two cables of a differential bus system, or as current paths in two contact elements of a differential electrical connector (specifically a differential electrical bus plug connector), which are arranged between two conductor sections of a differential main line of a differential bus system.

[0032] In an equivalent manner, the terms "first electrical branch", "second electrical branch" and "differential branch section" are to be understood in the present case and hereinafter specifically as electrical conductors (e.g. twisted wires) of a differential branch conductor of a differential bus system between the main line and the bus users, or as current paths in two contact elements of an electrical connector (in particular a differential electrical bus plug connector), which are arranged in a branch path between the main line path and the bus users of the differential bus system.

[0033] The connection component includes at least one differential main conductor section, wherein the first terminal and the second terminal are configured to be electrically connected to the first mating terminal or the second mating terminal of the bus user, respectively. The first mating terminal and the second mating terminal of the bus user form the differential terminal or the differential input terminal of the bus user. The first terminal and the second terminal are configured between the first sub-section and the second sub-section of the differential main conductor section. Between the first sub-section and the second sub-section, the first terminal in the first main conductor and the second terminal in the second main conductor are configured, respectively. The connection component having two sub-sections of the differential main conductor section and electrically connected to the bus user therefore includes a differential T-shaped structure. The differential T-shaped structure can be implemented in the form of a T-shaped differential line section or in the form of a T-shaped differential plug connector.

[0034] Preferably, a connection component of this type is electrically connected to two equivalent connection components, each of which is electrically connected to the nearest adjacent bus user in the bus system.

[0035] The corresponding electrical connection between two adjacent connection components can be performed directly in the case of short distances or via a correspondingly dimensioned differential main conductor section arranged therebetween in the case of longer distances. If the corresponding bus user is located at one end of the main line, the associated connection component terminates instead in the associated differential main conductor section of the bus user with a suitable impedance or at its differential input, in addition to parasitic equivalent elements, a suitable impedance is applied.

[0036] Preferably, the first main electrical conductor and the second main electrical conductor of the differential main conductor section can be arranged parallel to each other. This applies in particular to the corresponding representation of the first main conductor and the second main conductor in the form of contact elements in the main conductor path of the differential electrical bus (plug) connector. In the case where the first main conductor and the second main conductor are respectively in the form of twisted wires of main electrical wires, i.e. in the form of twisted wires of a cable forming the main electrical wires, the two main electrical wires of the differential main conductor pair and thus the first and second main electrical conductors can also be arranged parallel to each other. In this context, it should be observed that the two main wires of the differential bus system can be configured as separate wires and preferably also as a single wire consisting of two cables.

[0037] In a first embodiment of the connection assembly, the first and second can each be electrically connected immediately (ie directly) to an associated mating terminal of the bus subscriber.

[0038] Preferably, the first terminal and the second terminal can be respectively an insertion interface of a differential bus plug connector. For example, this can be a contact connection area of ​​a contact element of the differential bus plug connector, which is electrically contact-connected with an associated mating contact element of a mating plug connector, which is implemented at the differential input of the bus user, preferably in the form of a household plug connector. Alternatively, this can also be an insulation piercing connection device, which is electrically contact-connected with the main conductor on one side and comprises a contact connection area on the other side, which is contact-connected with a mating contact of a mating plug connector arranged in the bus user.

[0039] In a second embodiment of the connection assembly, the first terminal and the second terminal can be electrically connected to a first electrical branch conductor and a second electrical branch conductor of a differential branch conductor section, respectively, which is configured in the connection assembly. The first electrical branch conductor and the second electrical branch conductor can be configured as contact elements, respectively, or as contact sections of contact elements in a differential bus plug connector, respectively. The contact elements of the differential bus plug connector can be contact-connected with associated mating contact elements of a mating plug connector of a bus user, respectively. It can also be envisaged that the first electrical branch conductor and the second electrical branch conductor are respectively twisted wires of the differential branch, the ends of which are electrically connected to the plug connector for the purpose of electrical connection with the associated mating plug connector of the bus user. The branch conductor can also be an insulation piercing connection device, which is electrically contact-connected with the main conductor on one side and includes a contact connection area on the other side, which enables contact connection with a mating contact element of a mating plug connector configured in the bus user.

[0040] Preferably, the first electrical branch conductor and the second electrical branch conductor of the differential branch conductor section can also be wired in a mutually parallel arrangement. Alternatively, in the case where the first branch conductor and the second electrical branch conductor are respectively configured as twisted wires of the electrical branch line, the first electrical branch conductor and the second electrical branch conductor of the differential branch conductor section can also be wired in a mutually laid arrangement.

[0041] According to the invention, the first main electrical conductor and the second main electrical conductor in both the first subsection and the second subsection of the differential main conductor section can be surrounded by a body of magnetizable material, respectively. This type of embodiment enables optimal compensation of the influence of parasitic capacitances applied at the differential inputs of the bus users on the transmission behavior of the differential bus system. Alternatively, it is also possible that the first main electrical conductor and the second main electrical conductor in the first subsection of the differential main conductor section, or the first main electrical conductor and the second main electrical conductor in the second subsection of the differential main conductor section, respectively, are surrounded by a body of magnetizable material.

[0042] In both cases, the first main electrical conductor and the second main electrical conductor are mechanically separated from each other by a body of magnetizable material, so that in the presence of an electric current flux in the first main electrical conductor and the second main electrical conductor, in each case different magnetic flux paths can be formed in at least one of the bodies, so that the inductance in both the first main electrical conductor and the second main electrical conductor increases and needs to be adjusted accordingly.

[0043] Preferably, the magnetizable material may be a ferromagnetic metal alloy or a ferromagnetic material in the form of a "ferrite". Essentially, a magnetizable material with low residual magnetism can serve as a prerequisite for low-loss magnetic reversal at high-frequency currents and is conducive to low eddy currents. In particular, the body of ferrite material or the "ferrite core" exhibits these material properties.

[0044] The inductance in the first and second main conductors in the first and second sub-segments of the differential main conductor segment is adjusted by the corresponding surrounding bodies of magnetizable material by the "A" of the magnetizable bodies. L Value" is executed, the "A L The value "corresponds to the magnetic resistance R of the magnetizable body m The reciprocal value of the magnetizable body, the magnetic resistance R m In turn, it depends on the geometry and material of the body. Primarily, the inductance can be increased by having a high relative permeability μ r of material and a body with a large axial length to increase and therefore adjust.

[0045] Preferably, the separate body of magnetizable material is implemented in the form of a body separable from the respective main electrical conductor, i.e. in the form of a body which is axially displaceable on the respective main electrical conductor, which body is linearly movable from the respective main electrical conductor. Alternatively, the separate body of magnetizable material can also be implemented as a coating of the respective main electrical conductor with a magnetizable coating material. In the latter case, the body of magnetizable material is substantially bonded to the respective main electrical conductor. Finally, the body of magnetizable material can also be formed as an encapsulation of a separate electrical conductor.

[0046] Advantageous configurations and further developments emerge from the further dependent claims and the description taking into account the figures in the drawing.

[0047] It is to be understood that the features mentioned above and those described below can be used not only in the respectively indicated combination but also in other combinations or on their own, without departing from the scope of the present invention.

[0048] In a first embodiment of the body of magnetizable material, the body is configured as a bushing. At least each main electrical conductor in the first subsection or the second subsection is respectively surrounded by an associated bushing body of magnetizable material, which can form an associated magnetic flux path in the event of an electric current flux.

[0049] In a second embodiment of the body of magnetizable material, the body comprises two penetrations on its longitudinal axis and is thus configured in the form of a double-hole body or a double-hole core. The first main electrical conductor is guided through one hole and the second main electrical conductor is guided through the other hole. In the web region of the double-hole body, between the first main electrical conductor and the second main electrical conductor, the two magnetic fluxes of the first main electrical conductor and the second main electrical conductor overlap structurally based on the differential signal.

[0050] Preferably, the cross section of the magnetizable body has a circular outer contour in a first representation and an elliptical or oval outer contour in a second representation. However, a rectangular outer contour, in particular a square outer contour, or a polygonal outer contour is also conceivable. The inner contour of the magnetizable body is geometrically and dimensionally adapted to the first main electrical conductor or the second main electrical conductor.

[0051] Preferably, the connection assembly comprises a housing in which at least the differential main conductor section is arranged. In the housing, preferably three penetrations can be provided through which the first and second subsections of the differential main conductor section and the electrical connections to the bus users are respectively guided.

[0052] In order to simplify assembly, the housing preferably has a multi-part design comprising a plurality of housing shells, in particular a two-part design comprising two housing shells. The housing serves to guide the individual conductors, namely the first main conductor and the second main conductor, and optionally the first branch conductor and the second branch conductor. Furthermore, the housing is sealed and in contact with moisture and contaminants from the outside. Finally, the housing can also fix the individual magnetizable bodies in a specific axial position relative to the individual electrical conductors, which can be displaced on the individual electrical conductors, for example, by means of a pillar-shaped molding in the housing shell. Material-bonded radial fixing can be implemented, for example, by adhesive bonding, and friction-locked radial fixing can be achieved by press-fitting the magnetizable bodies in the housing.

[0053] Preferably, the housing can be formed from an electrically insulating material. For embodiments of the shielded bus system, the housing can also be of metal construction or can include a metal coating. In the electrically insulating housing, a metal shielding plate can also be arranged, wherein at the individual plug-in interfaces, in each case an outer conductor contact element of a differential bus plug connector is formed.

[0054] In another preferred embodiment of the magnetizable body, the magnetizable body is configured with a multi-part design. The magnetizable body thus comprises a plurality of sub-bodies, in particular two sub-bodies, each of which extends over a different angular section relative to the longitudinal axis of the magnetizable body. The individual sub-bodies are each fixed in an associated housing part of the housing or an associated housing shell.

[0055] A technical advantage of this type of embodiment of a magnetizable body is provided, since the individual magnetizable bodies do not have to be "threaded" on the individual electrical conductors, these magnetizable bodies can be introduced beforehand into the associated housing shell and fixed therein. Thus, by simply exchanging the housing, a retrofitting of a differential bus system with magnetizable bodies can be achieved in a simple manner, without interrupting the differential bus conductor system. A multi-part solution of this type for a magnetizable body can be achieved both for a bushing variant and for a double-hole variant of the body. In order to prevent any gaps between the sub-bodies which could reduce the inductance and thus lead to defective compensation, a high-precision manufacturing and assembly of the individual components must be observed.

[0056] To increase the precision, instead of the individual partial bodies being fixed in the associated housing shell, in a further preferred embodiment a correspondingly formed region of the housing shell is coated with a magnetizable material.

[0057] If the first and second main conducting conductors in both the first and second subsections of the differential main conductor section are respectively surrounded by a magnetizable body, then in a further embodiment of the magnetizable body of the first and second main conducting conductors, the magnetizable bodies in the first and second subsections of the differential main conductor section can be combined into a single magnetizable body. This embodiment can be used in a particularly advantageous manner in those variants in which the magnetizable body is embodied by a coating of a magnetizable coating material of the housing shell.

[0058] This embodiment can also be easily implemented for a first main conductor or a second main conductor, which is configured as a contact element and in which the contact socket is configured in each case by means of a first terminal or a second terminal for the electrical connection to a bus user. In this case, in a conventional magnetizable body, only a single through-hole for the feed-through of the electrical connection to the bus user is required.

[0059] In a first embodiment of the connection assembly, a first edge of the first insulation piercing connection device is electrically connected to a first terminal of the first main electrical conductor. In the same way, a second edge of the second insulation piercing connection device is electrically connected to a second terminal of the second main electrical conductor.

[0060] Thus, the first edge of the first insulation piercing connection device and the second edge of the second insulation piercing connection device penetrate the insulation of the first main conductor and the second main conductor, and thus contact and connect the first main conductor at the first terminal, or contact and connect the second main conductor at the second terminal. For the expected simplification of production, conventional LSA insulation piercing connection technology can be used (without welding, screw connection or insulation stripping).

[0061] Furthermore, the first insulation piercing connection device comprises a first contact terminal, which is preferably integrally connected to the first edge and is designed to be electrically connectable to a first mating terminal of the bus user. In the same way, the second insulation piercing connection device comprises a second contact terminal, which is preferably integrally connected to the second edge and is designed to be electrically connectable to a second mating terminal of the bus user. The first contact terminal and the second contact terminal of the first insulation piercing connection device or the second insulation piercing connection device respectively constitute contact elements of a differential plug-in interface, which contact elements respectively contact the mating contact elements of a mating plug connector of the bus user. Alternatively, these contact elements of the differential plug-in interface can also contact the mating contact elements of the mating plug connector, which is electrically connected to the differential branch conductor, which in turn can be connected to the bus user via a plug-in electrical connection. Finally, in another variant, the first contact terminal and the second contact terminal of the first insulation piercing connection device or the second insulation piercing connection device can be electrically connected to the insulation stripped branch line, i.e. the first electrical branch conductor or the second electrical branch conductor, respectively, preferably by a crimping connection or an insertion terminal connection. A differential spur of this type can in turn be electrically connectable to a bus user via an electrical plug-in connection. Specifically, in terms of production technology, the last variant represents the simplest embodiment of a connection assembly between a main line of a differential bus system and the respective bus user implemented in the form of a T-junction.

[0062] In a first embodiment of the connection assembly according to the invention, the magnetizable bushing body surrounds the first and second main line section respectively, preferably at least in the first subsection or the second subsection, by means of the insulation piercing connection technique.

[0063] In a second embodiment of the connection assembly, the connection assembly according to the invention is implemented as a differential bus plug connector of a differential bus system. The first main electrical conductor of the differential main conductor section of the connection assembly is configured as a first contact element of the differential bus plug connector. In the same way, the second main electrical conductor of the differential main conductor section is configured as a second contact element of the differential bus plug connector.

[0064] In a preferred embodiment of the second embodiment, the differential bus plug connector includes a first three-arm contact element and a second three-arm contact element. In the first subsection of the differential main conductor section of the connection assembly, the first main electrical conductor and the second main electrical conductor respectively form the first contact arm of the first three-arm contact element or the second three-arm contact element. In the second subsection of the differential main conductor section of the connection assembly, the first main electrical conductor and the second main electrical conductor respectively form the second contact arm of the first three-arm contact element or the second three-arm contact element, and the first electrical branch conductor and the second electrical branch conductor of the connection assembly respectively form the third contact arm of the first three-arm contact element or the second three-arm contact element. The first three-arm contact element and the second three-arm contact element can be configured to have a T-shaped, F-shaped or Y-shaped design, respectively. The first three-arm contact element and the second three-arm contact element can be configured to have a single part or multiple parts, such as a two-part structure, respectively. In the case of a multi-part embodiment, these individual contact arms of the first three-arm contact element or the second three-arm contact element can be connected to each other, for example, by screw connection or pressure fit connection.

[0065] The contact connection between the differential bus plug connector and the associated differential mating plug connector is performed according to conventional contact connection technology associated with plug connector engineering, ie preferably by radial contact connection or alternatively by end face contact connection.

[0066] At least the first contact element and the second contact element in the first subsection or in the second subsection are respectively surrounded by a magnetizable body. In the case of a three-arm contact element, at least the first contact arm or the second contact arm of the first three-arm contact element and the second three-arm contact element are respectively surrounded by a magnetizable body. At the axial ends of the first contact element and the second contact element, respectively, a contact connection with a mating contact element of an associated mating plug connector is performed.

[0067] In the context of a unified overall inventive concept, the present invention also includes a differential bus plug connector, the connection component of which further includes a first terminal and a second terminal, wherein the first terminal and the second terminal are respectively configured in the form of a contact connection area of ​​a mating contact element of a mating plug connector of a bus user, preferably in the form of a blind hole or a socket contact.

[0068] In addition to three-arm contact elements, linear contact elements are also conceivable, in which the contact connection with the mating plug connector is carried out at the axial ends and in the central region, preferably in the center, of the contact element.

[0069] The first main electrical conductor and the second main electrical conductor of the first subsection of the connecting assembly respectively form a contact element section from one axial end of the corresponding linear contact element to the central area (preferably to the center). The first main electrical conductor and the second main electrical conductor of the second subsection of the connecting assembly respectively form a contact element section from the central area (preferably from the center) to the other axial end of the corresponding linear contact element. In this case, the differential branch conductor section with the first electrical branch conductor and the second electrical branch conductor is realized outside the bus plug connector. The differential branch conductor section includes a mating contact element of the differential mating plug connector, which mating contact element contacts the two linear contact elements of the differential bus plug connector in the central area (preferably in the center) respectively, and includes branch conductors, which are respectively connected to these mating contact elements and respectively lead to the bus users.

[0070] For the contact connection of the linear contact elements of the differential bus connector with the associated mating contact elements of the differential mating connector, blind holes are preferably arranged in the central region of these contact elements (preferably in their center), into which pin-shaped mating contact elements can be introduced.

[0071] At least a contact element section between one axial end and a central region (preferably the center) of the two linear contact elements or a contact element section between the center and the other axial end of the two linear contact elements is respectively surrounded by a magnetizable body.

[0072] The first contact element and the second contact element can respectively be produced by machining methods (turning, milling) or by punching and bending techniques.

[0073] In addition to a differential bus plug connector comprising a connection assembly according to the invention, the invention also comprises a differential plug connector assembly comprising a differential bus plug connector and at least one differential mating plug connector, which can be plugged into one of the three plug connector interfaces of the differential bus plug connector together with the differential bus plug connector. The corresponding technical features of the connection assembly and the differential bus plug connector disclosed above and below also apply in an analogous manner to the differential plug connector assembly.

[0074] In another preferred embodiment of the differential plug connector assembly, the magnetizable body may not be arranged within the differential bus plug connector, but may be wired above the mating contact element of at least one differential mating plug connector, and at least one differential mating plug connector is connected to the first sub-section or the second sub-section of the differential main conductor section of the differential bus plug connector.

[0075] Likewise, in this case, the first and second main electrical conductors of the connection assembly are each surrounded by a magnetizable body.The technical features of the connection assembly and the differential bus plug connector disclosed herein before and after also apply in an analogous manner to the differential mating plug connector.

[0076] Finally, it should be observed that these separate magnetizable bodies can also be arranged outside the housing of a differential bus connector, outside the housing of a differential electrical connector configured with an insulation piercing connection device, or outside the differential connector assembly, in each case above the first main electrical conductor and the second main electrical conductor.

[0077] The above configurations and further developments can be combined with each other in any way, as long as this is appropriate. Further possible configurations, further developments and implementations of the present invention also include combinations of the above features of the present invention, or combinations of those features described below with reference to exemplary embodiments that are not explicitly indicated. Specifically, those skilled in the art will also combine various aspects by improving or adding to the corresponding basic forms of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0078] The present invention is described in more detail below with reference to the exemplary embodiments disclosed in the accompanying drawings. In the accompanying drawings:

[0079] FIG. 1A shows a diagram of a circuit layout of a differential bus system according to the prior art;

[0080] FIG. 1B shows a diagram of a circuit layout of a differential bus system with parasitic capacitance compensation according to the prior art;

[0081] Figure 2A shows an isometric illustration of a connection assembly according to the invention having a first manifestation of a magnetizable body;

[0082] Figure 2B shows an isometric illustration of a connection assembly according to the invention having a second manifestation of a magnetizable body;

[0083] Figure 3A An exploded illustration of a connection assembly according to the invention is shown, which is embodied as a differential bus plug connector;

[0084] Figure 3B A sectional illustration of a connection assembly according to the invention is shown, which is embodied as a differential bus plug connector;

[0085] Figure 4A An exploded illustration of a connection assembly according to the invention is shown, which is embodied as a differential bus plug connector with a multi-part magnetizable body;

[0086] Figure 4B shows a cross-sectional illustration of a connection assembly according to the invention, which is embodied as a differential bus plug connector with a multi-part magnetizable body;

[0087] Figure 5A A cross-sectional illustration of a connection assembly according to the invention is shown, which is implemented by an insulation piercing connection device;

[0088] Figure 5B An exploded view of a connection assembly according to the present invention in a disassembled state is shown, wherein the connection assembly is implemented by an insulation piercing connection device;

[0089] Figure 5C An exploded view of a connection assembly according to the present invention in a semi-assembled state is shown, the connection assembly being implemented by an insulation piercing connection device;

[0090] Fig. 6A An exploded view showing a plug connector assembly according to the present invention in a semi-assembled state; and

[0091] Figure 6B A cross-sectional illustration of a plug connector assembly according to the invention is shown.

[0092] The figures in the accompanying drawings are intended to convey a further understanding of embodiments of the present invention. They illustrate embodiments and are used in conjunction with the description to illustrate the principles and concepts of the present invention. Further embodiments and a number of the above advantages can be inferred in light of the accompanying drawings. The elements in the accompanying drawings are not necessarily shown in a true-to-scale illustration relative to one another.

[0093] In the drawings, identical, functionally equivalent and functionally identical elements, features and components (unless otherwise indicated) are respectively identified by the same reference numerals.

[0094] Hereinafter, the drawings are described in a coordinated and comprehensive manner. DETAILED DESCRIPTION

[0095] exist Figure 2A and Figure 2B , a connection component 1 for a differential bus system is shown respectively. The connection component 1 includes a differential main conductor section 2 and a differential branch conductor section 3. The differential main conductor section 2 further includes a first main conductor 21 and a second main conductor 22. The differential branch conductor section 3 further includes a first branch conductor 31 and a second branch conductor 32. The first branch conductor 31 is connected to the first main conductor 21 at a first terminal 41 of the first main conductor 21 between the first sub-section 51 and the second sub-section 52 of the differential main conductor section 2. In the same way, the second branch conductor 32 is connected to the second main conductor 22 at a second terminal 42 of the second main conductor 22 between the first sub-section 51 and the second sub-section 52 of the differential main conductor section 2.

[0096] The differential branch conductor section 3 is connected directly or indirectly via another differential line section to a differential input of an electrical component, which is assigned to a bus user TN of the differential bus system (cf. FIGS. 1A and 1B ). Figure 2A ). The first subsection 51 and the second subsection 52 of the differential main conductor section 2 are each electrically connected to a further bus subscriber TN of the differential bus system via further connecting components or alternatively terminated via suitable impedances.

[0097] according to Figure 2A The first main conductor 21 and the second main conductor 22 in the first subsection 51 and the second subsection 52 of the differential main conductor section 2 are respectively surrounded by a body 6 of a magnetizable material. The body 6 is preferably made of a ferrite material. Figure 2A In the illustration of , the magnetizable body 6 is configured in the form of a bushing and surrounds only a single main conductor 21 or 22, respectively. Figure 2A The first main conductor 21 and the second main conductor 22 in the first subsection 51 and in the second subsection 52 are respectively surrounded by a magnetizable bushing body 6. A variant is also conceivable in which the first main conductor 21 and the second main conductor 22 are respectively surrounded by a magnetizable body 6 only in the first subsection 51 or only in the second subsection 52.

[0098] Figure 2B A second embodiment of a magnetizable body 6 is shown, which in combination surrounds the first main conductor 21 and the second main conductor 22, respectively. To this end, the magnetizable body 6 comprises two axial penetrations 7 through which the first main conductor 21 and the second main conductor 22 are guided.

[0099] Figure 3A and Figure 3B An embodiment of a connection assembly 1 for a differential bus system is shown, which connection assembly 1 is configured as a differential bus plug connector 8. To this end, the differential bus plug connector 8 includes a first contact element 91 and a second contact element 92, which are each configured with three arms and serve as inner conductor contact elements. The axial ends of the three contact arms of the first contact element and the second contact element 91 and 92 respectively form a contact connection area K 11 , K 21 , K 12 , K 22 , K 31 and K 32 , for making electrical contact connection with an associated mating contact element of a differential mating plug connector.

[0100] Located in the contact connection area K 11 or K21 The contact arms of the first contact element 91 and the second contact element 92 in the differential main conductor section 2 between the first terminal 41 or the second terminal 42 form the first main conductor 21 and the second main conductor 22 in the first subsection 51 of the connection assembly 1. 12 or 10 22 The contact arms of the first contact element 91 and the second contact element 92 in the differential main conductor section 2 between the first terminal 41 or the second terminal 42 form the first main conductor 21 and the second main conductor 22 in the second subsection 52 of the connection assembly 1. 13 or K 23 The contact arms of the first contact element 91 and the second contact element 92 in the differential branch conductor section 3 between the first terminal 41 or the second terminal 42 form the first branch conductor 31 and the second branch conductor 32 of the connection assembly 1 , respectively.

[0101] In accordance with Figure 3A and Figure 3B In the illustration of , in the first subsection 51 and the second subsection 52 of the differential main conductor section 2 , the contact arms of the three-arm contact elements 91 and 92 are each surrounded by a common magnetizable body 6 .

[0102] For an embodiment of a shielded differential bus system, in the differential bus plug connector 8 , shielding and outer conductor contact connections are respectively configured at the plug connector interface.

[0103] For shielding the differential bus plug connector 8, preferably two metal outer conductor shells 101 and 102 are provided, which are configured in a mutually connectable arrangement and thus surround the first contact element 91 and the second contact element 92 over the entire periphery of the first contact element 91 and the second contact element 92. For the contact connection of the outer conductor with the associated outer conductor mating contact element of the differential mating plug connector or with the outer conductor of the shielded differential line, the outer conductor contact areas 111, 112 and 113 are respectively configured on the two metal outer conductor shells 101 and 102 at the three plug-in connector interfaces.

[0104] For electrical insulation between the differential inner conductor contact-connection regions K, mutually and with respect to the outer conductor contact-connection regions 11 , insulation elements 121 , 122 and 123 are respectively arranged at the three plug-in connector interfaces.

[0105] The connection assembly 1 or the differential bus plug connector 8 comprises a housing 13, preferably with two mutually attachable housing shells 131 and 132. Two outer conductor shells 111 and 112 are inserted and fixed in the housing 13. In the two outer conductor shells 111 and 112, the connection assembly 1 according to the invention (i.e. the first and second contact elements 91 and 92 of the differential bus plug connector 8 with the associated magnetizable body 6) are inserted and fixed via insulating elements 121, 122 and 123. For the contact connection of the differential bus plug connector 8 with the associated differential mating plug connector, associated penetrations 141, 142, 143 are configured in the housing.

[0106] Figure 4A and Figure 4B A further embodiment of a connection assembly 1 for a differential bus system is shown, which is embodied as a differential bus plug connector 8. According to the differential bus plug connector 8 represented, the differential bus system is implemented without corresponding shielding and therefore does not include metallic outer conductor shells 101 and 102.

[0107] The magnetizable body 6 is configured with a two-part construction and comprises a first magnetizable sub-body 61 and a second magnetizable sub-body 62, respectively. The magnetizable sub-bodies 61 and 62 are fixed in the associated electrically insulating housing shell 131 or 132. The axial fixation of the two magnetizable sub-bodies 61 and 62 is performed by means of struts 15, respectively molded into the housing shells 131 and 132. The radial fixation is achieved by the cooperation of the inner diameter of the penetration 7 of the two magnetizable bodies 6 with the outer diameter of the first contact element 91 and the second contact element 92. The struts 15 are further used to guide the first contact element 91 and the second contact element 92 in the differential bus plug connector 8.

[0108] In accordance with FIG. 5A to FIG. 5C In another embodiment of the non-shielded connection assembly 1 , the contact connection between the first main conductor 21 and the first branch conductor 31 and between the second main conductor 22 and the second branch conductor 32 is performed by a first insulation piercing connection device 161 or a second insulation piercing connection device 162 .

[0109] The twisted wires of the first and second main lines 171, 172 form the first and second main conductors 21, 22 of the connection assembly 1. The first and second main lines 171, 172 are surrounded by a cable sheath 18, for example, and are released from the cable sheath 18 in the region of the connection assembly 1.

[0110] In the present embodiment, the first contact terminal 271 or the second contact terminal 272, which is integrally connected to the first insulation piercing connection device 161 and the second insulation piercing connection device 162, respectively, forms the first branch conductor 31 or the second branch conductor 32. The first and second insulation piercing connection devices 161 and 162 interrupt the insulation of the first main conductor section or the second main conductor section 171 and 172 at their first edge 281 or second edge 282, so that electrical contact is achieved between the twisted wires of the first and second main conductor sections 171 and 172 and the first contact terminal 271 or the second contact terminal 272. The first and second contact terminals 271 and 272 form a differential and unshielded plug-in interface of the connection assembly 1, which is implemented as a differential bus plug connector 8. At this differential plug-in connector interface, a mating plug connector configured at the differential input of the bus user TN can be inserted. Alternatively, the first contact terminal 271 and the second contact terminal 272 can each be electrically connected to a twisted wire of a differential branch line 3 , which in turn can be electrically connected to a bus subscriber TN, for example via a plug-in connection.

[0111] In accordance with Fig. 6A and Figure 6B In another embodiment of the connection assembly 1, a differential plug connector assembly 19 is provided, which includes a differential bus plug connector 8 and, for example, three corresponding differential mating plug connectors 20. The magnetizable body 6 is not arranged in the differential bus plug connector 8, but is arranged in a first differential mating plug connector 201 and a second differential mating plug connector 202. The first differential mating plug connector 201 is combined with the differential bus plug connector 8 in the first subsection 51 of the differential main conductor section 2 to form an electrical plug-in connection. The second differential mating plug connector 202 is combined with the differential bus plug connector 8 in the second subsection 51 of the differential main conductor section 2 to form an electrical plug-in connection.

[0112] The two mating contact elements 211 and 212 of the first differential mating plug connector 201 and the two mating contact elements 221 and 222 of the second differential mating plug connector 202 are respectively surrounded by the magnetizable body 6. The two mating contact elements 211 and 212 of the first differential mating plug connector 201 are electrically connected to the first main conductor 241 or the second main conductor 242 of the differential main line section 231 of the differential bus system, for example, by a crimp connection. The two mating contact elements 221 and 222 of the second differential mating plug connector 202 are electrically connected to the first main conductor 251 or the second main conductor 252 of another differential main line section 232 of the differential bus system, for example, in the same way. The two mating contact elements 211 and 212 of the first differential mating plug connector 201 and the two mating contact elements 221 and 222 of the second differential mating plug connector 202 are arranged together with the associated magnetizable body 6 in the plug connector housings 261 and 262 of the first differential mating plug connector and the second differential mating plug connector 201 and 202, respectively, and are fixed therein, for example by bonding.

[0113] Although the present invention has been entirely described above with reference to the preferred exemplary embodiments, the present invention is not limited thereto but can be modified in various ways.

Claims

1. A connection assembly (1) for electrically connecting a bus user (TN) to a differential bus system, the connection assembly comprising a differential main conductor section (2), the differential main conductor section (2) having a first main electrical conductor (21) and a second main electrical conductor (22), wherein: The differential main conductor section (2) comprises a first sub-section (51) and a second sub-section (52) electrically connected to the first sub-section (51). wherein, in the first main electrical conductor (21), between the first subsection (51) and the second subsection (52), a first terminal (41) is configured to be electrically connected to a first mating terminal of the bus user (TN), and in the second main electrical conductor (22), between the first subsection (51) and the second subsection (52), a second terminal (42) is configured to be electrically connected to a second mating terminal of the bus user (TN), It is characterized in that The connection assembly (1) comprises a first electric branch conductor (31) and a second electric branch conductor (32), wherein the first electric branch conductor (31) is connected to the first terminal (41) and is designed to be connectable to the first mating terminal, and the second electric branch conductor (32) is connected to the second terminal (42) and is designed to be connectable to the second mating terminal, And wherein at least one of the first main electrical conductor (21) and the second main electrical conductor (22) in the first subsection (51) or in the second subsection (52) is respectively surrounded by a body (6; 61, 62) of magnetizable material.

2. The connection assembly (1) according to claim 1, It is characterized in that The body (6; 61, 62) is configured as a bushing having a penetration portion (7) for feedthrough of the first main electrical conductor (21) in the first subsection (51), feedthrough of the second main electrical conductor (22) in the first subsection (51), feedthrough of the first main electrical conductor (21) in the second subsection (52), or feedthrough of the second main electrical conductor (22) in the second subsection (52).

3. The connection assembly (1) according to claim 1, It is characterized in that The body (6; 61, 62) comprises two penetration portions (7) on the longitudinal axis for feed-through of the first main electrical conductor (21) and the second main electrical conductor (22) in the first subsection (51), or feed-through of the first main electrical conductor (21) and the second main electrical conductor (22) in the second subsection (52).

4. The connection assembly (1) according to one of claims 1 to 3, It is characterized in that The connection assembly (1) includes a housing (13), the differential main conductor section (2) is arranged in the housing (13), and the housing (13) includes a penetration portion (141, 142, 143) for the first sub-section (51), for the second sub-section (52), and for electrically connecting to the first mating terminal or the second mating terminal.

5. Connection assembly (1) according to one of claims 1 to 4, It is characterized in that The body (6; 61, 62) comprises a plurality of sub-bodies (61, 62), preferably two sub-bodies (61, 62), each of the sub-bodies extending over a different angular section relative to the longitudinal axis of the body (6; 61, 62).

6. The connection assembly (1) according to claim 4 and 5, It is characterized in that Each of the sub-bodies (61, 62) is fixed in an associated housing portion (131, 132) of the housing (13).

7. Connection assembly (1) according to one of claims 1 to 6, It is characterized in that The body (6; 61, 62) is configured as a coating or an encapsulation on the first main electrical conductor (21) and the second main electrical conductor (22), respectively.

8. Connection assembly (1) according to one of claims 1 to 7, It is characterized in that The first main electrical conductor (21) and the second main electrical conductor (22) are respectively configured as electrical conductors of a first main line section (171) or a second main line section (172), wherein the connection assembly (1) comprises a first insulation piercing connection device (161) and a second insulation piercing connection device (162), wherein the first insulation piercing connection device (161) comprises a first edge (281) for electrically contacting and connecting the first terminal (41) and a first contact terminal (271) for electrically connecting to the first mating terminal, and wherein the second insulation piercing connection device (162) comprises a second edge (282) for electrically contacting and connecting the second terminal (42) and a second contact terminal (272) for electrically connecting to the second mating terminal.

9. The connection assembly (1) according to claim 8, It is characterized in that At least the first main line section (171) and the second main line section (172) in the first subsection (51) or in the second subsection (52) are respectively surrounded by the body (6; 61, 62).

10. Connection assembly (1) according to one of claims 1 to 9, It is characterized in that The body (6; 61, 62) is configured to increase the inductance in the main conductor section (2) so that the parasitic capacitance (C dev ) is preferably at least partially compensated by choosing a suitable geometry for the body (6; 61, 62) and / or by choosing a suitable material for the body (6; 61, 62).

11. A differential electrical bus plug connector (8) for a differential bus system, comprising a connection assembly (1) according to one of claims 1 to 10, wherein: The first main electrical conductor (21) is configured as a first contact element (91), and the second main electrical conductor (22) is configured as a second contact element (92).

12. A differential electrical bus plug connector (8) for a differential bus system, comprising a connection component (1) for electrically connecting a bus user (TN) to the differential bus system, the connection component comprising a differential main conductor section (2), the differential main conductor section (2) having a first main electrical conductor (21) and a second main electrical conductor (22), in, The differential main conductor section (2) comprises a first sub-section (51) and a second sub-section (52) electrically connected to the first sub-section (51). wherein, in the first main electrical conductor (21), between the first subsection (51) and the second subsection (52), a first terminal (41) is configured to be electrically connected to a first mating terminal of the bus user (TN), and in the second main electrical conductor (22), between the first subsection (51) and the second subsection (52), a second terminal (42) is configured to be electrically connected to a second mating terminal of the bus user (TN), The first terminal (41) and the second terminal (42) are respectively configured as contact connection areas of a mating contact element of a mating plug connector for the bus user (TN), and the contact connection areas are preferably in the form of blind holes or socket contacts. wherein the first main electrical conductor (21) and the second main electrical conductor (22) at least in the first subsection (51) or in the second subsection (52) are respectively surrounded by a body (6; 61, 62) of magnetizable material; and Therein, the first main electrical conductor (21) is configured as a first contact element (91), and the second main electrical conductor (22) is configured as a second contact element (92).

13. The differential electrical bus plug connector (8) according to claim 11 or 12, It is characterized in that At least in the first subsection (51) or in the second subsection (52), the first contact element (91) and the second contact element (92) are respectively surrounded by the body (6; 61, 62).

14. A differential electrical plug connector assembly (19) for a differential bus system, comprising a differential electrical bus plug connector (8) according to one of claims 11 to 13, a first differential electrical mating plug connector (201) and a second differential electrical mating plug connector (202) each having two mating contact elements (211, 212, 221, 222), wherein: Each of the two mating contact elements (211, 212) of the first differential mating plug-in connector (201) is electrically connected to one of the contact elements (91, 92) in the first sub-section (51), and each of the two mating contact elements (221, 222) of the second differential mating plug-in connector (202) is electrically connected to one of the contact elements (91, 92) in the second sub-section (52).

15. A differential electrical plug connector assembly (19) for a differential bus system, comprising a differential electrical plug connector (8), the differential electrical plug connector (8) having a connection assembly (1), a first differential electrical mating plug connector (201) and a second differential electrical mating plug connector (202), the connection assembly (1) being used to electrically connect a bus user (TN) to the differential bus system, wherein: A connection component (1) of a bus plug connector (8) comprises a differential main conductor section (2), the differential main conductor section (2) having a first main electrical conductor (21) and a second main electrical conductor (22), wherein the differential main conductor section (2) comprises a first subsection (51) and a second subsection (52) electrically connected to the first subsection (51), wherein in the first main electrical conductor (21), between the first subsection (51) and the second subsection (52), a first terminal (41) configured to be electrically connected to a first mating terminal of the bus user (TN) is disposed, and in the second main electrical conductor (22), between the first subsection (51) and the second subsection (52), a first terminal (41) configured to be electrically connected to a first mating terminal of the bus user (TN) is disposed. A second terminal (42) of a second mating terminal of a user (TN), wherein the first differential mating plug connector (201) and the second differential mating plug connector (202) respectively include two mating contact elements (211, 212, 221, 222), and wherein each of the two mating contact elements (211, 212) of the first differential mating plug connector (201) is electrically connected to one of the main electrical conductors (21, 22) in the first sub-section (51), and each of the two mating contact elements (221, 222) of the second differential mating plug connector (202) is electrically connected to one of the main electrical conductors (21, 22) in the second sub-section (52), It is characterized in that At least the mating contact elements (211, 212, 221, 222) of the first differential mating plug connector (201) or the second differential mating plug connector (202) are respectively surrounded by a body (6; 61, 62) of a magnetizable material.

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