DE102018102564A1 - Electric ferrule, electrical connection device, and method for assembling an electrical cable - Google Patents

Abstract

The invention relates to an electrical ferrule (100), in particular a twinaxial ferrule (100) for an electrical connection device (10), in particular a twinaxial connection device (10), for an electrical cable (50), in particular a twinaxial cable (50), Preferably, in the automotive field, wherein the ferrule (100) is constituted by a sheath (101) extending in an axial direction (Ax) of the ferrule (100) and substantially completely in a circumferential direction (Um) of the ferrule (100) the axial direction (Ax) rotates, and a simple radial thickness (Ra) of the ferrule (100) changes over at least one axial extension (Ax) of the ferrule (100). The invention further relates to a method for assembling an electrical cable (50), in particular a twinaxial cable (50), for the automotive sector, wherein an electrical ferrule (100) is provided on / on a prepared cable (50), and the ferrule (100) on at least one I nnenisolierung (511, 512) of the cable (50) is pushed and / or attached.

Description

The invention relates to an electrical ferrule, in particular a twinaxial ferrule; an electrical connection device, in particular a twinaxial connection device; an electrical connector, in particular a miniature connector; in each case for an electrical cable, in particular a twinaxial cable, preferably for the motor vehicle sector; a method for assembling an electrical cable, in particular a twinaxial cable; and a device, module, device, apparatus, installation or system; preferably in each case for the motor vehicle sector.

In the electrical field (electronics, electrical engineering, electrics, electrical power engineering, etc.) are a large number of electrical connector devices or connector devices, socket, pin and / or hybrid connectors, etc. - hereinafter referred to as (electrical) connector (also: mating connector) - known, which serve to transmit electrical currents, voltages, signals and / or data with a wide range of currents, voltages, frequencies and / or data rates. In the low, medium or high voltage and / or current range, and in particular in the vehicle sector, such connectors must be durable, repeated and / or after a comparatively long time in warm, possibly hot, contaminated, moist and / or chemically aggressive environments of inactivity in the short term to ensure transmission of electrical power, signals and / or data. Due to a wide range of applications, a large number of specially designed connectors are known.

Such a connector and possibly its housing can be connected to an electrical cable, a cable, a wiring harness, etc. (ready-made electrical cable), or on / in an electrical device or device, such. B. on / in a housing, on / on a stamped grid, on / on a printed circuit board, etc., a (power) electrical, electro-optical or electronic component or such an aggregate (s. If a connector (with / without housing) is located on a cable, a cable or a wiring harness, this is also referred to as a (flying) (plug-in) connector or a plug or a coupling; If it is located on / in an electrical, electro-optical or electronic component, this is also referred to as a (counter) connector device, such as, for example. As a (built-in) connector, a (built-in) plug or a (built-in) socket. Further, a connector on such a device is often referred to as a (plug) receptacle or header.

Such a connector must ensure proper transmission of electricity, with mating connectors (connectors and mating connectors) usually having attachment or locking means for permanently but usually releasably securing or locking the connector to / in the mating connector. - Furthermore, an electrical connection device, for. B. comprising or comprising an actual contact device (usually integrally formed, eg., A contact element, a terminal, etc.) or a contact device (usually multi-part, two-piece, one-piece, materially integral or integrally formed, eg., One or more parts (Crimp-) contact device), be included in this safe. In a prefabricated cable, such a connecting device as a connector, ie without a housing, for. B. flying, be provided.

Since the housing of the connector usually a certain standardization, such. As the FAKRA or other standard, subject to have the most important dimensions of the housing with different connector manufacturers the same dimensions. - There are always efforts in the way to improve electrical contact devices, contact devices, connecting devices, connectors and / or prefabricated cables (also: harnesses), in particular to downsize, cost-effective design and / or cheaper to manufacture.

Electromagnetically shielded twinaxial cables for high speed differential signal transmission deviate from a circular cross sectional geometry typical of radio frequency cables and have at least partially oval cross sectional geometry; z. B. a (partially) elliptical or part-circular cross-sectional geometry, wherein the cross-sectional geometry in addition to at least one rounded portion may also have at least one straight section (definition (not exhaustive): oval). Here are two electrical inner conductor (signal) of the Twinaxialkabels of an electrical outer conductor (electromagnetic shielding of the inner conductor), z. B. a metallized plastic film surrounded. Either the shielding (see the 1 and 3 ) or an entire cross-sectional geometry (cf. 2 ) of the twinaxial cable has an oval shape (flat, round and preferably completely convex cross-sectional geometry of the twinaxial cable).

In order to further obtain a small plug connection, an electromechanical interface of an electrical connection device (contact device, contact device and / or etc.) for the twinaxial cable likewise follows an oval cross-sectional geometry (cf. 5 ). A cross-sectional geometry of a crimping section (in the 5 shown as a hexagonal section) of a contact device (shield contact sleeve, etc.) of the twinaxial cable is tuned to a circular cross-section. A z. B. resulting shield contact sleeve for a Twinaxialkabel requires a transition from oval (electrical contact section, front in the 5 ) too circular (in the back in the 5 ) and possibly too oval again (for a cable according to the 2 ).

Such a transition forms a critical point of the connection device, in or at which a comparatively narrow distance between the inner conductors of the twinaxial cable merges into a wider division of the contact devices or contact devices (terminals, etc.) of the connection device. This transition has a negative effect on the signal integrity over substantially all the frequencies that can be transmitted by the connection device (see the upper curve in FIG 6 which represents the prior art). Such a transition may in particular lead to a discontinuity in the impedance which is difficult to compensate and which limits a maximum usable frequency of a respective twinaxial cable, in particular in full-duplex operation.

It is an object of the invention to provide an improved electrical connection device. In particular, it is an object of the invention to provide an improved twinaxial connecting device, preferably an improved mini-twin-axial connecting device. Here are the connecting device and any associated connector (also: mating connector) build small, simple in design and / or easy to handle, with a corresponding production and a corresponding subsequent assembly should be cost-effective. Furthermore, it is an object of the invention to provide a method for assembling a twinaxial electrical cable. Here, the process should be rational with flexible process management, z. B. possibly even with a user, be feasible.

The object of the invention is by means of an electrical ferrule, in particular a twinaxial ferrule; by means of an electrical connection device, in particular a twinaxial connection device; by means of an electrical connector, in particular a mini connector; in each case for an electrical cable, in particular a twinaxial cable, preferably for the motor vehicle sector; by a method for assembling an electrical cable, in particular a twinaxial cable; and a device, a module, a device, an apparatus, a system or a system; preferably in each case for the motor vehicle sector; solved according to the independent claims. - Advantageous developments, additional features and / or advantages of the invention will become apparent from the dependent claims and the following description.

The ferrule according to the invention is constituted by a sheath which extends in an axial direction of the ferrule and essentially completely revolves around the axial direction in a circumferential direction of the ferrule, whereby a simple radial thickness of the ferrule changes over at least one axial extension of the ferrule. - The ferrule is in particular not only punched out of a sheet of substantially the same thickness, bent and / or further bendable for assembly (crimp ferrule), but is preferably produced as a non-crimp ferrule.

Preferably, the ferrule according to the invention does not have a slot extending completely therethrough in the axial direction of the ferrule or partially extending into it. Furthermore, the ferrule has no Crimpfahne or Crimpflank (time prior to their installation) and thus no crimp (temporally after their assembly) on. In particular, the ferrule according to the invention can be produced and / or produced from a 'solid material' (preferably: no finished product, no sheet, etc.). Ie. the ferrule with its changing, simple radial thickness is preferred as a solid ferrule preferably without a slot (slot-free), without a through-hole (through-recess), without an undercut (undercut-free) and / or without material layer overlap, etc. formed.

A simple radial thickness of the ferrule is a thickness of the ferrule in the radial direction, radially on one side away from a center line (line of the cross-sectional centers of the ferrule) of the ferrule to understand (see. 3 the ferrule only above or just below or the inner conductor of the twinaxial cable shown there). The jacket is curved in the circumferential direction on each other and formed preferably closed in the circumferential direction. Ie. the ferrule is designed as a single arc wall which preferably extends completely around the axial direction. The cable can z. B. be designed as a copper cable and / or an aluminum cable.

In one embodiment, at a circumferential position (punctiform thought, cf. 3 ) at a first axial end portion of the ferrule, the ferrules have one of their smallest radial thicknesses. Further, at a circumferential position on / in a first axially opposite second axial end portion of the ferrule, the ferrule may have one of its largest radial thicknesses. In an embodiment, at a circumferential position at a first axial end of the ferrule, the ferrule may have substantially one of their smallest radial thicknesses or substantially their smallest radial thickness. Further, at a first axially opposite second axial end of the ferrule, the Ferrule have one of their largest radial thicknesses or substantially their greatest radial thickness.

In one embodiment, over substantially the entire axial extent of the ferrule, the ferrules may have a preferably single, substantially constant outer diameter (not 3 ). This preferred (mathematically actually) only outer diameter of the ferrule is preferably arranged parallel to a transverse direction of the ferrule or its connecting device. According to the invention, the ferrule preferably has a through-passage.

The through-passage may be designed to be essentially mirror-symmetrical at least in axial sections, with respect to a central vertical axis or a central vertical axis. Furthermore, the through-passage may be designed to be essentially mirror-symmetrical at least in axial sections, with respect to a central transverse axis or a central transverse axis plane. In this case, the through-passage may have an essentially constant internal geometry at least in axial sections.

The passage recess can have at least axial sections, in each case essentially constant internal diameters in all axial planes. Ie. the radial cross sections (planes defined by the vertical direction and the transverse direction) of the axial portion of the through-hole and the whole through-hole are substantially the same (shape, inner dimensions, inner diameter). The through-hole can, at least in axial sections, in a transverse center region (cf. 4 ) in the vertical direction constant internal dimensions (see. 3 ). Further, the through-passage at least axially in sections, in a central transverse direction substantially constant inner diameter (see. 4 ). Furthermore, the through-hole in the ferrule ( 100 ) in the direction of a free end of the ferrule expand (see u.). The widening takes place preferably in two opposite directions within a spatial dimension. In this case, the widening can already begin at a free end of the through-hole or only within the through-hole.

In one embodiment, the through-passage is configured such that, after its installation on / on the cable, in particular the twinaxial cable, it is seated at least axially in a form-fitting manner on / on the cable, in particular the twinaxial cable, through the through-passage. In this case, an axial section of the through-hole can widen, in particular in the transverse direction, so that in such an axial section, it is delimited by the through-hole in a preferably wedge-shaped intermediate region of a twinaxial cable between the other two of the twinaxial cable.

In one embodiment, the ferrule may have two ferrule portions, wherein the first ferrule portion is formed as a hollow truncated cone portion and the second ferrule portion is formed as a hollow cylindrical portion. In this case, the through-passage through the ferrule can have a circular or an oval cross-section. The two ferrule sections are preferably materially connected in one piece or formed integrally with each other.

Here, the hollow cylinder portion in the first approximation, d. H. without a smaller-scale view of its structure (eg without a faceting, etc.), cross-sections which are substantially circular or oval on the outside and also essentially circular or oval on the inside (through-hole). - Furthermore, the hollow truncated cone portion in the first approximation, d. H. again without a more detailed view of its structure, cross-sections on the outside substantially circular or oval, and inside (through-hole) are also formed substantially circular or oval. In this case, the cross sections of the hollow truncated cone section become smaller, preferably starting from the hollow cylinder section, whereby a single outer diameter can remain constant (see above the only constant outer diameter).

In one embodiment, the cross sections of the hollow cylinder section are designed to be substantially circular in the first approximation (see above). On one side close to the cross sections of the hollow truncated cone section, which starting from the last circular cross section of the hollow cylinder section, outside with increasing distance from the hollow truncated cone section are becoming increasingly oval and smaller. In this case, a single outer diameter of the hollow cylinder section and of the hollow truncated cone section remain constant (see above, largest radial dimension of the ferrule preferably in the transverse direction). The through-hole of the ferrule has a preferably oval cross-section.

The ferrule or the hollow cylinder portion may have an anti-rotation. Here, the rotation, in the case of a circular through-hole in the ferrule, for the ferrule itself, and / or for a foreseeable on / on the ferrule contact device, for. As a (crimpable) shield contact sleeve, serve as a rotation. The rotation can at least one substantially flat surface or a Have faceting. Here, three, four, five, six or more facets can be provided for faceting.

In one embodiment, the through-passage in the hollow truncated cone section can widen in the direction of a free end of the hollow truncated cone section. By means of the expansion, preferably in the transverse direction, it is possible that the inner conductor of the twinaxial cable already within the ferrule or the hollow truncated cone portion, at least initially already to a wider pitch (transition as a critical point in the connection device) for the contact devices or contact devices (terminals etc. ) of the connection device. The widening can have diameters which are equal to the diameters corresponding thereto in the hollow cylinder section (essentially in a vertical direction of the connecting device).

The ferrule may be formed as a on / on the cable pushed and / or attachable ferrule. Furthermore, essentially an entire axial extent of the ferrule can be provided on / on the cable. In addition, the ferrule may be formed as a rigid, in particular non-crimpable, ferrule. Ie. the ferrule is z. B. inelastic, inflexible, solid and / or rigid. Whatever kind of plastic or substantially plastic deformation of the ferrule leads to their uselessness in the sense of the invention. In one embodiment, the ferrule is formed light-tight in time before and after its installation in all axial directions.

The ferrule may be formed as a materially integral or integral ferrule. Furthermore, the ferrule may be made of a metal, a metal alloy, a plastic or a plastic-metal composite. In addition, the ferrule may be made of aluminum, copper, zinc or brass. Furthermore, the ferrule may have a metal coating or a metallization. Furthermore, the ferrule may be formed as a cast or embossed ferrule. If the ferrule is designed as a cast ferrule, then in the case that the ferrule is made of a metal or a metal alloy, a die casting method, in particular a low or medium pressure casting, application. If the ferrule is made of a plastic, an injection molding process is used in particular. Furthermore, the ferrule may have a material with high permittivity (dielectric constant). A high permittivity have z. B. some ceramics (sintered part), glasses, plastics or mixed forms of these materials.

The connecting device according to the invention has an electrical ferrule according to the invention and at least one contact device, in particular a shield contact sleeve and / or at least one terminal. In one embodiment, the connection means comprises the ferrule, one or two terminals, e.g. B. at least one pin, pen, tab and / or socket contact device, etc., and the shield contact sleeve. Here, the terminal with an electrical inner conductor or the two terminals with two inner conductors of the cable are electromechanically connectable.

In the connector, the ferrule preferably functions substantially as a signal integrity ferrule. The ferrule can be designed and / or arranged on the connection device in such a way that two inner conductors of the cable spatially spread in front, behind and / or within the ferrule. If the inner conductors spread apart (forked) within the ferrule, this is preferably done within a widening of the ferrule. In one embodiment, in a frequency range of the connection device of more than 1 GHz, a return loss of at least 4.5 dB or 5 dB differs from a return loss of the connection device without the ferrule.

In embodiments, the return loss of the connection device at a frequency of about 1GHz by at least about 6.5dB, at about 2GHz by at least about 6.5dB, at about 3GHz to at least about 7dB, at about 4GHz at least about 7dB, at about 5GHz by at least about 6dB, at about 6GHz by at least about 5.5dB, at about 7GHz by at least about 6dB and / or at about 8GHz by at least about -5.5dB against a damping of the connecting device without the ferrule.

When located in a mounting position on / on the cable connection device, the ferrule can be pushed onto at least one inner insulation of the cable and / or plugged. In this case, an entire axial extent of the ferrule can be pushed onto the inner insulation and / or plugged. Furthermore, in this case, the terminal or the terminals can already be provided on the inner conductor or the inner conductors of the cable, in particular crimped on it. Furthermore, the ferrule can be set up between a dielectric of the connecting device and a mounting sleeve of the connecting device. Here, the dielectric, the ferrule and the mounting sleeve are arranged in series in the connecting device, wherein first the mounting sleeve and in a temporal sequence, the ferrule is mounted on the cable. The mounting sleeve is preferably seated against an outer insulation of the cable.

An electrical outer conductor of the cable may be folded over onto the mounting sleeve, the ferrule preferably being in electrical contact with the outer conductor. Furthermore, the contact device, in particular the shield contact sleeve, be fixed on the mounting sleeve and / or an outer insulation of the cable. This is preferably done by means of a crimping process. When mounting the connecting device on / on the cable, the shield contact sleeve with the ferrule may possibly lock, for which corresponding locking devices are provided on / in the shield contact sleeve and the ferrule. Preferred are, for. B. secured due to the rotation of the ferrule, the shield contact sleeve and the ferrule against each other twisting.

The electrical connector according to the invention has a connector housing, an electrical ferrule according to the invention and / or an electrical connection device according to the invention. In this case, the connecting device can be set up in the connector housing. - In the method for assembling the electrical cable according to the invention, an electrical ferrule is provided on / on the prepared (cut to length, stripped etc.) cable, wherein the ferrule is pushed onto at least one inner insulation of the cable and / or plugged. In this case, an entire axial extent of the ferrule is preferably pushed onto the inner insulation and / or inserted. Here, a terminal or the terminals for the cable can already be electromechanically connected to the inner conductor or the inner conductors of the cable, in particular crimped to this or these, be.

Preferably, in a first step of the method, a mounting sleeve over the at least one inner insulation of the cable can be provided. Furthermore, in the first step of the method, an electrical outer conductor of the cable can be transferred to the mounting sleeve. Preferably, in a second step of the method following the first step, the ferrule can be slid and / or attached. Furthermore, in the second step of the method, a dielectric may be pushed and / or plugged in front of the ferrule via the terminal or terminals.

Preferably, in a third step of the method following the second step, a shield contact sleeve on / on the mounting sleeve and / or the cable can be fixed electromechanically and / or mechanically. - In this case, the ferrule and / or the connecting device can be designed according to the invention. The prefabricated cable can be designed as a prefabricated cable, it being possible for the prefabricated cable to be associated with a shield contact sleeve, i. H. this is not mounted yet.

The invention shows a significant improvement in signal integrity (see 6, p Parameter) due to the ferrule (signal integrity ferrule) according to the invention, which has an electrically conductive material and z. B. cast or embossed. Furthermore, with a transition of a connection device from circular to oval, the invention makes it possible to improve a frequency performance (increase of a maximum usable frequency band for a specific communication method (protocol, technology, etc.)) of a connector with the connection device according to the invention by a significant amount. A further advantage is that a space for a connecting device, a connector housing, a connector and thus an electrical connection can remain small (oval outer contour of the connecting device).

The invention is explained in more detail below with reference to exemplary embodiments with reference to the attached schematic and not to scale drawing. Sections, elements, components, units, schemes and / or components that have an identical, univocal or analogous configuration and / or function are described in the description of the figures (see below), the list of reference numerals, the patent claims and in the figures (FIG Drawing with the same reference numerals. A possible, not in the description of the invention (see above), not shown in the drawing and / or not final alternative, a static and / or kinematic reversal, a combination, etc. to the embodiments of the invention or a component, a scheme, a Unit, a component, an element or a portion thereof can also be found in the list of reference numerals and / or the description of the figures.

In the invention, a feature (section, element, component, unit, component, function, size, etc.) may be positive, ie present, or negative, ie, absent, with a negative feature not explicitly explained as a feature, if not according to the invention, it is important that it is absent. A feature of this specification (description, list of references, claims, drawing) may be applied not only in a specified manner and / or manner but also in a different manner and / or manner (isolation, summary, replacement, addition, isolation, omission, etc .). In particular, it is possible to replace, add or omit a feature in the claims and / or the description by reference numerals and a feature assigned thereto, or vice versa, in the description, the list of reference numerals, the patent claims and / or the drawing , In addition, this can be a feature be designed in a claim and / or specified in more detail.

• 1 einen zweidimensionalen Querschnitt einer ersten Ausführungsform eines elektrischen Twinaxialkabels mit kreisrunder Außengeometrie und ovaler Innengeometrie seiner elektromagnetischen Schirmung seiner beiden Innenleiter,
• 2 eine hinten weggebrochene Perspektivdarstellung einer zweiten Ausführungsform eines Twinaxialkabels mit ovaler Außengeometrie und ovaler Innengeometrie seiner elektromagnetischen Schirmung seiner beiden Innenleiter,
• 3 in einer zentralen zweidimensionalen Schnittansicht, eine erfindungsgemäße elektrische Verbindungseinrichtung mit zwei Terminals und einer Schirmkontakthülse als elektrischer Verbinder in einer Montageposition an dem Twinaxialkabel gemäß 1,
• 4 in einer Perspektivansicht von hinten, ein Ausführungsbeispiel einer Ausführungsform einer erfindungsgemäßen elektrischen Twinaxial-Ferrule der Verbindungseinrichtung aus 3, für eine Aufsteckmontage auf den Innenleitern des Twinaxialkabels,
• 5 in einer Perspektivansicht von vorne, ein Ausführungsbeispiel einer Ausführungsform des mit der Verbindungseinrichtung aus 3 erfindungsgemäß endkonfektionierten elektrischen Twinaxialkabels, welches hinten weggebrochen dargestellt ist, und
• 6 einen Vergleich der Erfindung (untere Kurve) mit dem Stand der Technik (obere Kurve), welcher zeigt, wie eine Signalintegrität (S-Parameter, Reflexionsfaktor) der Verbindungseinrichtung mittels der Ferrule gemäß 4 verbesserbar ist.

The features of this specification are also interpretable as optional features (given the (mostly unknown) state of the art); ie each feature can be considered as an optional, arbitrary or preferred, that is, as a non-binding feature. Thus, a detachment of a feature, possibly including its periphery, from an embodiment possible, this feature is then transferable to a generalized inventive concept. The absence of a feature (negative feature) in one embodiment demonstrates that the feature is optional with respect to the invention. Furthermore, in a species term for a characteristic and a generic term for the feature readable (possibly further hierarchical structure in subgenus, section, etc.), which, z. B. under consideration of equality and / or equivalence, a generalization of this or this feature is possible. In the merely exemplary figures:

• 1 2 shows a two-dimensional cross section of a first embodiment of an electrical twinaxial cable with a circular outer geometry and an oval inner geometry of its electromagnetic shielding of its two inner conductors,
• 2 a rear broken away perspective view of a second embodiment of a Twinaxialkabels with oval outer geometry and oval inner geometry of its electromagnetic shielding of its two inner conductors,
• 3 in a central two-dimensional sectional view, an inventive electrical connection device with two terminals and a shield contact sleeve as an electrical connector in a mounting position on the Twinaxialkabel according to 1 .
• 4 in a perspective view from behind, an embodiment of an embodiment of an inventive electrical twinaxial ferrule of the connecting device from 3 , for mounting on the inner conductors of the twinaxial cable,
• 5 in a perspective view from the front, an embodiment of an embodiment of the invention with the connecting device 3 according to the invention finished electrical twinaxial cable, which is shown broken away at the back, and
• 6 a comparison of the invention (lower curve) with the prior art (upper curve), which shows how a signal integrity (S-parameter, reflection factor) of the connecting means by means of the ferrule according to 4 is improvable.

The invention is based on embodiments of an embodiment of a variant of an electric twinaxial connection device 10 , in particular a Minitwinaxial connection device 10 , explained in more detail for the automotive sector. Furthermore, the invention is based on embodiments of an embodiment of a variant of a confectioning process for a twinaxial electrical cable 50 explained in more detail. In the drawing, only those spatial portions of an article of the invention are shown, which are necessary for an understanding of the invention.

Although the invention has been described and illustrated in more detail by preferred embodiments, the invention is not limited by the disclosed embodiments, but is of a more fundamental nature. Other variations can be deduced therefrom and / or from the above (description of the invention) without departing from the scope of the invention. Thus, the invention is applicable to other connectors, connectors, contactors or cables (harnesses) in the automotive field or a non-automotive field, such as electronics, electrical engineering, power engineering, etc. Here, the invention z. B. also applicable to connecting devices, contact devices or cables in the computer and (entertainment) electronics sector. Furthermore, the invention is applicable to an electrical cable having a single inner conductor or more than two inner conductors.

Designations such as connector and mating connector, connection device and mating connection device, pin / pin / Tabkontaktvorrichtung and socket contact device are synonymous to interpret, ie, if necessary, each interchangeable. The explanation of the invention with reference to the drawing refers in the following to an axial or longitudinal direction Ax (longitudinal axis Ax , Axial plane Ax , also plug-in direction S ), a high direction Mr (Plateau Mr ), a transverse direction qr (Transverse plane qr ), a radial direction Ra (Radial plane Ra ) and a circumferential direction Around (tangent Around ) an electrical (plug) connection according to the invention, an electrical connector according to the invention 1 , a connector housing 20 , the connection device 10 , the twinaxial cable 50 etc. (see the 3 to 5 ).

Here, the (plug) connection can be a connector 1 (Connecting device 10 and connector housing 20 (in the 3 shown in dashed lines) or a connecting device 10 as a connector ( 3 and 5 ) and a mating connector, wherein the mating connector may optionally be formed as a connector according to the invention (connecting device and connector housing, or connecting device as a connector). The Interconnects 1 or the connection device 10 of the twinaxial cable 50 can according to the FAKRA standard (FAKRA = Fachkreis Automobil), in particular for an RF or HF connector 0 (RF: radio frequency, RF: radio frequency), z. B. as pin, pen, tab, socket, hybrid (plug) connector, (flying) coupling, (built) plug, (built) socket, plug receptacle, receptacle socket, header, interface, etc. are formed his.

The 1 and 2 each show an electrical Twinaxialkabel 50 , to which in each case a connecting device according to the invention 10 (see the 3 and 5 ) is crimpable. The twinaxial cable 50 comprises (from inside) a first electrical inner conductor 501 , which of a first inner insulation 511 or a first dielectric 511 is surrounded, and a second electrical inner conductor 502 , which of a second inner insulation 512 or a second dielectric 512 is surrounded. The two inner conductors 501 . 502 (Signal) are adjacent, in particular parallel to each other, in Twinaxialkabel 50 set up and each include z. As a strand or wire made of aluminum or copper.

The two inner insulation 511 . 512 are from an electrical outer conductor 520 or an electromagnetic shielding 520 preferably narrow, ie surrounded with a low tolerance. The outer conductor 520 is z. As a screen conductor 520 , a braided wire 520 , a wickerwork 520 , an electrically conductive foil 520 , formed with a metal-coated electrically insulating film, etc. Preferably, the outer conductor 520 Aluminum or copper on. Radial Ra outside the outer conductor 520 there is an external insulation 530 of the twinaxial cable 50 ,

The connection device 10 in the present case has a single ferrule 100 , two terminals 200 . 200 (Contact devices 200 . 200 ) and a shield contact sleeve 300 (Contact device 300 ) on. Between the two terminals 200 . 200 and the shield contact sleeve 300 there is an electrical insulation 420 or a dielectric 420 which may be multi-part, two-part, one-piece, materially integral or integrally formed. It is of course possible such a connection device 10 only through a ferrule 100 , a single terminal 200 and / or a shield contact sleeve 300 , or otherwise constituted.

The ferrule 100 (see. 4 ) is present as an electrical (mini) twinaxial ferrule 100 educated. Here is the ferrule 100 through a coat 101 or a (circumferential) material layer 101 constituted, which or which are in the circumferential direction Around around the axial direction Ax preferably extends completely around, with the ferrule 100 hollow inside is formed (Umfangbogenwandung 101 ). This gives the ferrule 100 Approximated the shape of a hollow cylinder (see, u., Durchgangsausnehmung 130 ). The coat 101 or the (circumferential) material layer 101 is preferred in the circumferential direction Around and axial direction Ax closed. The ferrule 100 itself is not designed as a crimp sleeve (press clamp, pressure sleeve, clamping ring) with a crimp gap.

The ferrule 100 itself is preferably in one piece, materially integral or integrally preferably formed of a metal, a metal alloy, a plastic or a plastic-metal composite. As a metal or a metal alloy z. As an aluminum material, a copper material, a zinc material, a brass material, etc. in question. Is the ferrule 100 formed of a plastic, it is preferably coated or metallized (inside and outside) with a metal or a metal alloy. Furthermore, a ferrule 100 from a metal or a metal alloy in addition z. B. be coated with a metal or a metal alloy. The ferrule is preferred 100 cast or embossed.

In the present case includes the ferrule 100 at least two firmly interconnected Ferrulenabschnitte 110 . 120 , a hollow heat stump section 110 and a hollow cylinder portion 120 (see the 3 and 4 ). Through both ferrule sections 110 . 120 runs through hole 130 which is essentially centrally in the ferrule 100 is furnished and has an oval cross-section. But also a circular cross section of the through-hole 130 , z. B. in a single core coaxial cable is, or another cross-sectional shape are applicable.

The passage recess 130 can in the axial direction Ax have constant diameter; ie the dimensions of the through-hole 130 in a single relevant axial plane Ax are in the axial direction Ax constant. But it is also possible that a diameter of the through-hole 130 inside the ferrule 100 changes, especially in the direction of an axial end of the through-hole 130 expands. This allows already inside the ferrule 100 the inner conductors 501 . 502 of the twinaxial cable 50 to a wider division for the terminals 200 . 200 the connection device 10 pass. The widening takes place in the present case preferably in the transverse direction qr the ferrule 100 whereas the dimensions of the through-hole 130 in the vertical direction Mr preferably remain substantially constant.

This can be the entire through-hole 130 inside the ferrule 100 widen, or the widening of the through-hole 130 starts only inside the ferrule 100 , In the present case are within the hollow cylinder section 120 the diameter of the through-hole 130 each within the respective axial planes Ax substantially constant, whereas the diameters of the through-hole 130 within the (entire) hollow gel stump section 110 essentially in the transverse direction qr expand. Of course, this can also be configured differently; z. B. an incipient expansion within the hollow cylinder portion 120 or an incipient expansion only within the Hohlegelstumpfabschnitts 110 ,

Preferably, the hollow cylinder section 120 has z. B. outside a rotation 122 on, to which z. B. the shield contact sleeve 300 z. B. can be formed during crimping. The anti-twist device 122 has z. B. at least one flat surface 122 or a faceting 122 on. Outside has the hollow cylinder section 120 , apart from the anti-rotation 122 and possibly other devices and / or devices, in a first approximation circular cross-sections. When to the hollow cylinder section 120 subsequent Hohlegelstumpfabschnitt 110 These cross sections are getting more and more oval and at least in the vertical direction Mr smaller. This can be a dimension in the transverse direction qr opposite the dimension in the transverse direction qr of the hollow cylinder section 120 remain essentially the same.

The contact device 200 as a terminal 200 (see. 3 ) is present as a (first) electrical (mini) twinaxial contact device 200 educated. Here is the terminal 200 preferably partially plastically deformable, ie crimpable (terminal 200 partially formed as a crimp sleeve) and preferably in one piece, materially integral or integrally formed. It is of course possible to use a non-crimpable terminal 200 which z. B. glued, soldered, welded, etc. can be applied. The terminal 200 can be used as a pin, pen, tab, socket contact device (see 3 ) etc. be formed.

The contact device 300 as shield contact sleeve 300 (see. 3 and 5 ), z. B. as an impedance contact sleeve 300 can be referred to, is present as a (second) electric (mini) twinaxial contact device 300 educated. Here is the shield contact sleeve 300 preferably partially plastically deformable, that is crimpable (Schirmkontakthülse 300 partially formed as a crimp sleeve) and preferably in one piece, materially integral or integrally formed. The shield contact sleeve 300 In the present case, it is divided into an outer conductor crimping section and an electrical shield contact section for electrical contacting with a shield contact section of a mating connector. An isocrimp section is of course applicable.

The following is an essentially three-stage (steps I, II and III) method of assembling the twinaxial cable 50 from the 3 and 5 with a connecting device according to the invention 100 cursory explained in more detail, creating a prefabricated Twinaxialkabel 5 is obtained. A provision of the terminals 200 . 200 (in the present case socket contact devices 200 . 200 ) is not explicitly explained. The terminals 200 . 200 can at an appropriate time on the inner conductors 501 . 502 are provided, which is preferably done by a crimping process.

First, for the first step I the twinaxial cable 50 prepared, ie the Twinaxialkabel 50 is cut to length, stripped (external insulation 530 ), again cut to length (outer conductor 520 ) and / or stripped (inner insulation 511 . 512 ) etc. (cf. 2 ). Possibly. can take steps for dissecting the twinaxial cable 50 also be carried out only during assembly. - In the first step I is a preferred metallic mounting sleeve 410 over the inner insulation 511 . 512 and the outer insulation over it 530 of the twinaxial cable 50 intended. In a temporal connection, which is preferred, a possibly freer, under the mounting sleeve 410 protruding end portion of the outer conductor 520 outside on the mounting sleeve 410 transferred.

At the second step II becomes the ferrule 100 on the inner insulation 511 . 512 merely pushed and / or attached, until this in a mechanical and preferably electrical contact with the mounting sleeve 410 or the folded end portion of the outer conductor 520 arrives. Furthermore, in the second step II the dielectric 420 in front of the ferrule 100 over the terminals 200 . 200 pushed and / or plugged. The terminals lock in place 200 . 200 preferably with the dielectric 420 , In the third step III becomes the shield contact sleeve 300 electromechanical on / on the mounting sleeve 410 and / or mechanically on / on the outer insulation 530 of the twinaxial cable 50 established. This is preferably done by means of a crimping process.

This will make a (end-) prefabricated twinaxial cable 5 obtained having the twinaxial cable 50 with the ferrule 100 , the dielectric 400 , the terminals 200 . 200 and the shield contact sleeve 300 , The end-assembled twinaxial cable 5 , comprising an electrical connector 1 (Without a connector housing) may be arranged such that it without further action on a mating connector 1 is pluggable. Alternatively, the connector 1 of the end-assembled twinaxial cable 5 in the connector housing 20 (dashed in as option in 3 shown) primary and possibly additionally locked secondarily.

LIST OF REFERENCE NUMBERS

1

electrical (mini) (twinaxial) connector

5

(end-) prefabricated (twinaxial) cable

10

electrical connection device

20

Connector housing (optional)

50

electrical (twinaxial) cable

100

electrical (mini) (twinaxial) ferrule

101

Coat of ferrule 100

110

first ferrule section, hollow heat stump section

120

second ferrule section, hollow cylinder section

122

Anti-rotation, flat surface, faceting

130

through recess

200

terminal

300

Screen contact sleeve

410

mounting sleeve

420

dielectric

501

(first) electrical inner conductor (signal)

502

(second) electrical inner conductor (signal)

511

(first) inner insulation

512

(second) interior insulation

520

electrical outer conductor (electromagnetic shielding)

530

external insulation

Ax

Axial direction, longitudinal direction, axial plane, longitudinal plane

Mr

High direction, plateau

qr

Transverse direction, transverse plane

Ra

Radial direction, radial plane

Around

Circumferential direction, tangential plane

S

Connecting direction of the connecting device 10

Claims (14)

Electric ferrule (100), in particular twinaxial ferrule (100) for an electrical connection device (10), in particular a twinaxial connection device (10), for an electrical cable (50), in particular a twinaxial cable (50), preferably for the motor vehicle sector, wherein the ferrule (100) is constituted by a sheath (101) extending in an axial direction (Ax) of the ferrule (100) and substantially completely in a circumferential direction (Um) of the ferrule (100) about the axial direction (Ax) rotates, characterized in that over at least one axial extension (Ax) of the ferrule (100) a simple radial thickness (Ra) of the ferrule (100) changes. Electric ferrule (100) according to the preceding claim, characterized in that at a circumferential position: • at a first axial end portion of the ferrule (100), the ferrule (100) has one of its smallest radial thicknesses (Ra), • at / in one first axially opposite second axial end portion of the ferrule (100), the ferrule (100) has one of its largest radial thicknesses (Ra), • at a first Axialendende the ferrule (100), the ferrule (100) substantially one of their smallest radial thicknesses (Ra) or substantially its smallest radial thickness (Ra), • at one of the first axially opposite second axial end of the ferrule (100), the ferrule (100) one of its largest radial thicknesses (Ra) or substantially its greatest radial thickness (Ra), and over substantially the entire axial extent (Ax) of the ferrule (100), the ferrule (100) having a substantially constant outer diameter (Ra). Electric ferrule (100) according to one of the preceding claims, characterized in that the ferrule (100) has a passage recess (130), and: • the passage recess (130) at least axially sectionwise (Ax), with respect to a central vertical axis (Hr) or central Hochachsenebene (Hr) is formed substantially mirror-symmetrical, • the through-passage (130) at least axialabschnittsweise (Ax), with respect to a central transverse axis (Hr) or a central Querachsenebene (Hr) is formed substantially mirror-symmetrical, • the through-passage (130) at least axial sectionwise (Ax), in each case substantially constant inside diameter in all axial planes (Ax), • the through-passage (130) at least axially sectionwise, in a transverse center region (Qr) in the vertical direction (Hr) have constant Innenabmessungen_, • the Durchgangsausnehmung (130) at least axialabschnittsweise, in a middle-transverse direction g (Qr) has substantially constant inner diameter, and / or • the through-hole (130) in the ferrule (100) widens in the direction of a free end of the ferrule (100). Electric ferrule (100) according to one of the preceding claims, characterized in that the ferrule (100) has two ferrule sections (110, 120), wherein the first ferrule section (110) as a hollow truncated cone section (110) and the second ferrule section (120) as a hollow cylinder portion (120) is formed, and the through-hole (130) has a circular or an oval cross-section through the ferrule (100). Electric ferrule (100) according to one of the preceding claims, characterized in that: • the ferrule (100) or the hollow cylinder section (120) has an anti-rotation lock (122), • the anti-rotation lock (122) has at least one essentially flat surface (122) or a faceting (122), and / or • the through-passage (130) in the hollow truncated cone section (110) widens in the direction of a free end of the ferrule (100) or of the hollow truncated cone section (110). Electric ferrule (100) according to one of the preceding claims, characterized in that: • the ferrule (100) is designed as a ferrule (100) which can be pushed onto / onto the cable (50), • essentially an entire axial extent (Ax) the ferrule (100) on / on the cable (50) is providable, • the ferrule (100) as a rigid, in particular non-crimpable, ferrule (100) is formed, and / or • the ferrule (100) timed before and after its mounting in all axial directions (Ax) is formed light-tight. Electric ferrule (100) according to one of the preceding claims, characterized in that: • the ferrule (100) is formed as a materially integral or integral ferrule (100), • the ferrule (100) made of a metal, a metal alloy, a plastic or a plastic-metal composite is produced, • the ferrule (100) is made of an aluminum material, a copper material, a zinc material or a brass material, • the ferrule (100) has a metal coating or a metallization, and / or • the ferrule (100) is formed as a cast or embossed ferrule (100). Electrical connection device (10), in particular twinaxial connection device (10), for an electrical cable (50), in particular a twinaxial cable (50), for the motor vehicle sector, characterized in that the connection device (10) has an electrical ferrule (100) according to a of the preceding claims and at least one contact device (200, 300), in particular a screen contact sleeve (300) and / or at least one terminal (200, 200). Electrical connection device (10) according to the preceding claim, characterized in that: • the ferrule (100) functions essentially as a signal integrity ferrule (100) of the connection device (10), and / or • the ferrule (100) is designed and / or in such a way at the connection device (10) can be set up or spatially spatially spread in front of, behind and / or within the ferrule (100) two inner conductors (501, 502) of the cable (50), • in a frequency range of Connection device (10) of over 1 GHz, a return loss to at least 4.5 dB or 5 dB of damping of the connecting device (10) deviates without the ferrule (100). Electrical connection device (10) according to one of the preceding claims, characterized in that in the connection device (10) located in a mounting position on / on the cable (50): • the ferrule (100) on at least one inner insulation (511, 512) of Cable (50) is pushed and / or attached, • the ferrule (100) between a dielectric (420) of the connecting device (10) and a mounting sleeve (410) of the connecting device (10) is set, • an electrical outer conductor (520) of the Cable (50) on the mounting sleeve (410) is folded and the ferrule (100) is preferably in electrical contact with the outer conductor (520), • the contact device (300), in particular the shield contact sleeve (300) on the mounting sleeve (410 ) and / or an outer insulation (530) of the cable (50) is fixed. Electrical connector (1), in particular miniature connector (1), for an electrical cable (50), in particular a twinaxial cable (50) for the motor vehicle sector, having a connector housing (20), characterized in that the connector (1) is an electrical ferrule (100) and / or an electrical connection device (10) according to one of the preceding claims. Method for assembling an electrical cable (50), in particular a twinaxial cable (50), for the motor vehicle sector, wherein a electrical ferrule (100) is provided on / on a prepared cable (50), characterized in that the ferrule (100) on at least one inner insulation (511, 512) of the cable (50) is pushed and / or attached. Fabrication method according to the preceding claim, characterized in that: • preferably in a first step (I) of the method, a mounting sleeve (410) is provided above the at least one inner insulation (511, 512) of the cable (50), • in the first step ( I) of the method, an electrical outer conductor (520) of the cable (50) is transferred to the mounting sleeve (410), • preferably in a temporally following the first step (I) second step (II) of the method, the ferrule (100 ) is pushed and / or plugged in, • in the second step (II) of the method, a dielectric (420) is pushed and / or inserted in front of the ferrule (100) via the terminal (200) or the terminals (200, 200), Preferably in a third step (III) of the method following the second step (II), a screen contact sleeve (300) on / on the mounting sleeve (410) and / or the cable (50) is determined electromechanically and / or mechanically, and / or • d The ferrule (100) and / or the connecting device (10) is designed according to one of the preceding claims. Device, module, device, apparatus, installation or system, in particular for the motor vehicle sector, characterized in that the device, the module, the device, the apparatus, the installation or the system, an electrical ferrule (100), an electrical connection means (10 ), an electrical connector (1) and / or a prefabricated electrical cable (5) according to one of the preceding claims, and / or the device, the module, the device, the apparatus, the installation or the system a prefabricated electrical cable ( 5), which is produced by a confectioning method according to one of the preceding claims.

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