EP3837741B1 - Cable arrangement - Google Patents
Cable arrangement Download PDFInfo
- Publication number
- EP3837741B1 EP3837741B1 EP19768772.6A EP19768772A EP3837741B1 EP 3837741 B1 EP3837741 B1 EP 3837741B1 EP 19768772 A EP19768772 A EP 19768772A EP 3837741 B1 EP3837741 B1 EP 3837741B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- outer conductor
- cable
- contact element
- conductor contact
- connector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004020 conductor Substances 0.000 claims description 286
- 239000012212 insulator Substances 0.000 claims description 40
- 230000008859 change Effects 0.000 claims description 21
- 229920001971 elastomer Polymers 0.000 claims description 9
- 239000000806 elastomer Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 4
- 238000002788 crimping Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 8
- 238000003825 pressing Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 6
- 238000009413 insulation Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000013528 metallic particle Substances 0.000 description 4
- 238000009954 braiding Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
- H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
- H01R24/42—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency comprising impedance matching means or electrical components, e.g. filters or switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
- H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
- H01R9/0518—Connection to outer conductor by crimping or by crimping ferrule
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
- H01R13/6473—Impedance matching
- H01R13/6474—Impedance matching by variation of conductive properties, e.g. by dimension variations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
- H01R13/6591—Specific features or arrangements of connection of shield to conductive members
- H01R13/6592—Specific features or arrangements of connection of shield to conductive members the conductive member being a shielded cable
- H01R13/6593—Specific features or arrangements of connection of shield to conductive members the conductive member being a shielded cable the shield being composed of different pieces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
- H01R13/6598—Shield material
- H01R13/6599—Dielectric material made conductive, e.g. plastic material coated with metal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2103/00—Two poles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
- H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
- H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
- H01R4/183—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
Definitions
- the present invention relates to a cable assembly.
- Cables are connected in a detachable connection via connectors, preferably via plug connectors, to another cable or to a circuit board.
- the cable can be connected in a non-detachable connection, i.e. in a fixed connection, directly to another cable or a circuit board without using a connector.
- a secure connection with the associated inner conductor-side contact or the outer conductor-side contact of the connector must be realized for both the inner conductor and the outer conductor in the case of a detachable connection.
- a secure connection must be established to the inner conductor and outer conductor of the other high-frequency cable or to the contact on the inner conductor side and outer conductor side on the circuit board.
- the shielding of the cable is connected to the shielding sleeve of the cable connector via a spring element and the individual inner conductors of the cable are each connected to an inner conductor contact element.
- the EP 1 291 981 A2 and the US 3,103,548 A each disclose a shielded connector in which the inner cable conductor is crimped with an inner conductor contact element and the shielding of the cable folded back around a support sleeve is crimped with an outer conductor contact element.
- the US 3,103,548 A discloses a cable arrangement according to the preamble of claim 1.
- Crimping or pressing has proven successful for the connection on the external conductor side.
- the outer conductor is freed from the cable jacket over a certain section at the end of the cable and thus stripped of insulation.
- the outer conductor of the high-frequency cable is thus exposed in this section.
- the exposed section of the outer conductor is then connected to an electrically conductive outer conductor contact element in a crimping process. In this way, a mechanically stable connection between the outer conductor of the high-frequency cable and the outer conductor contact element and thus a secure electrical contact between the outer conductor and the outer conductor contact element is established via such a conductor crimp.
- the outer conductor contact element has a coaxiality with the inner conductor equivalent to the outer conductor of the high-frequency cable and is therefore preferably formed in the shape of a sleeve.
- An external conductor contact element shaped in this way is therefore also referred to as a crimp sleeve.
- the exposed outer conductor is wrapped around a support sleeve that has a certain wall thickness.
- the crimp sleeve which is crimped with the outer conductor in the area of the support sleeve, therefore has a larger inner diameter than the inner diameter of the outer conductor in the high-frequency cable.
- the crimp sleeve has a radial narrowing.
- This radial narrowing of the crimp sleeve is, for example, from DE 20 2015 000 751 U1 is realized in the longitudinal direction of the cable following the conductor crimp.
- the radial narrowing of the crimp sleeve is also called waist crimp.
- a cavity forms between the crimp sleeve and the insulator part of the high-frequency cable in the area between the axial end of the outer conductor of the high-frequency cable and the radial narrowing of the crimp sleeve.
- This cavity which is only filled with air and can fluctuate between the individual assembled cables, represents a fault point in the high-frequency signal path.
- the distance between the outer conductor contact and the inner conductor is increased compared to the distance between the outer conductor and the outer conductor contact to the inner conductor in the rest of the signal path .
- This defect in the impedance curve of the high-frequency signal path adversely affects the transmission behavior of a high-frequency signal especially in the two- or three-digit gigahertz range.
- the present invention is based on the object of creating a cable arrangement comprising a cable and an external conductor contact element, which is optimized in its high-frequency transmission behavior.
- the knowledge/idea underlying the present invention is to replace at least part of the air enclosed in the cavity, which is not electrically conductive, with an electrically conductive filling element.
- the air trapped in the cavity is completely replaced by the electrically conductive filling element.
- the area of the change in diameter of the outer conductor contact element ie the area of the radial narrowing of the outer conductor contact element, in which the air-filled cavity was formed according to the prior art, is filled with electrically conductive material up to the insulator part.
- the inner diameter on the outer conductor side is thus adapted in the area of the change in diameter of the outer conductor contact element to the inner diameter on the outer conductor side in the remaining areas of the high-frequency cable and the outer conductor contact element.
- This advantageously achieves a constant impedance curve over the entire high-frequency signal path within the high-frequency cable and the outer conductor contact element and thus allows the use of the high-frequency cable, in particular in the transition to a connector, for high-frequency signals expanded into the two- or three-digit gigahertz range.
- the cable is preferably a high-frequency cable for transmitting a high-frequency signal.
- a radio frequency signal is a signal in the frequency range between 3 MHz and 30 THz.
- a high-frequency cable used in the automotive sector according to the invention is intended for applications in the single-digit to three-digit GHz range.
- the high-frequency cable is preferably a coaxial cable with an electrical inner conductor, an insulator part coaxially surrounding the electrical inner conductor, an outer conductor coaxially surrounding the insulator part and a cable sheath coaxially surrounding the outer conductor.
- the high-frequency cable can also include two electrical inner conductors and a common outer conductor for transmitting a differential high-frequency signal (so-called shielded twisted pair cable).
- the high-frequency cable can also be implemented as a shielded star-quad cable, each with two crossed and shielded pairs of electrical inner conductors.
- a high-frequency cable is possible with any technically sensible number of shielded pairs of electrical inner conductors, which are arranged either parallel or crossed over one another.
- the outer conductor of the cable is made in the form of a metallic wire gender or a metallic foil with a view to low cable weight and easy manufacturability.
- the electrical inner conductor of the cable can be produced as a core that is surrounded by an insulator part. Instead of an electrical inner conductor and an insulator part, an insulated wire is also possible.
- An outer conductor contact element of a cable arrangement is a contact element that realizes the outer conductor-side electrical contact between the outer conductor of the high-frequency cable and an outer conductor contact of a connector, preferably a plug connector.
- the outer conductor contact element of a cable arrangement is permanently connected to the outer conductor contact of the connector or the plug connector, for example via a welded connection.
- the outer conductor contact element of the cable arrangement and the outer conductor contact of the connector or the plug connector can be implemented as a single component.
- the external conductor contact element of the cable arrangement primarily provides electrical shielding in the transition area between the high-frequency cable and the connector or the plug connector. Equivalently, the outer conductor contact element of the cable arrangement can be electrically connected in an inseparable connection to the outer conductor of another cable or to the outer conductor-side contact connection on a circuit board or on a housing.
- the outer conductor contact element encloses the exposed electrical inner conductor and the exposed insulator part of the cable and is therefore preferably shaped like a sleeve, particularly with regard to its shielding task.
- the sleeve-shaped outer conductor contact element preferably has a round cross-sectional profile in order to achieve coaxiality with a single electrical inner conductor of a cable.
- other cross-sectional profiles such as a square, rectangular or elliptical cross-sectional profile are also suitable for the outer conductor contact element, particularly in the case of a cable with several electrical inner conductors covered by the invention.
- the cross-sectional profile used also depends on the crimping process used.
- the outer conductor contact element is mechanically and electrically connected to the outer conductor of the cable, preferably via a crimp or press connection.
- a solder connection is also conceivable.
- the change in diameter of the external conductor contact element can occur suddenly, i.e. discontinuously. Due to the manufacturing process, the change in diameter of the outer conductor contact element preferably extends over a certain axial extent and has a continuous course, i.e. a smooth or S-shaped course.
- the electrically conductive filling element used in the cable arrangement according to the invention is made from a single electrically conductive material or from a composite material with several electrically conductive individual materials.
- the electrically conductive filling element can also be made from a composite material with at least one electrically conductive individual material and at least one dielectric individual material. What is crucial here is that the electrically conductive filling element has sufficient electrical conductivity for high-frequency signals in the frequency range mentioned.
- the electrically conductive filling element can be a self-contained component without inclusions or a component with inclusions.
- the filling element can be shaped according to known shapes, for example as an annular shape, or any complex and have a delicate shape. What is crucial here is that the electrically conductive filling element replaces the cavity in the cable arrangement, which was originally filled with air, at least partially by an electrically conductive material of the filling element.
- the electrically conductive filling element is arranged adjacent to an axial end of the outer conductor of the cable within the outer conductor contact element.
- the electrically conductive filling element thus advantageously at least partially fills the area in the axial longitudinal direction of the cable between the axial end of the outer conductor and the change in diameter of the outer conductor contact element within the outer conductor contact element.
- the distance between the axial end of the outer conductor and the change in diameter of the outer conductor contact element preferably the distance between the axial end of the outer conductor and an end of the preferably S-shaped course of the change in diameter of the outer conductor contact element facing the connector or the plug connector, is preferably less than 2 mm , especially smaller than 0.5 mm.
- the axial longitudinal extent of the filling element is therefore to be designed in the uninstalled state of the filling element in such a way that the filling element in the installed state within the cable arrangement covers the area between the axial end of the outer conductor and preferably an end of the particularly S-shaped course facing the connector or the plug connector the change in diameter of the outer conductor contact element fills it as optimally as possible.
- the cable in addition to the outer conductor, has an electrical inner conductor and an insulator part, which is arranged between the outer conductor and the electrical inner conductor. At the end of the cable, at which the cable is connected to a connector or plug connector, the electrical inner conductor of the insulator part and the insulator part of the outer conductor are each exposed.
- the filling element Since the filling element is arranged adjacent to the axial end of the outer conductor, the filling element is located in the area of the exposed insulator part. According to the invention, the filling element is arranged in a region between the axial end of the outer conductor and the change in diameter of the outer conductor contact element between the outer conductor contact element and the insulator.
- the filling element concentrically encloses the insulator part of the cable.
- the electrically conductive filling element When installed, the electrically conductive filling element preferably lies against the insulator part within the cable arrangement.
- the electrically conductive filling element preferably rests on the external conductor contact element.
- the electrically conductive filling element thus advantageously also at least partially, preferably completely, fills the area between the outer conductor contact element and the insulator part in a transverse direction to the longitudinal extent of the cable.
- the change in diameter of the outer conductor contact element preferably represents a radial narrowing.
- the radial narrowing of the outer conductor contact element is preferably designed such that the outer conductor contact element rests on the insulator part in the area of the smallest radial narrowing.
- the area in which a filling element can be arranged is therefore closed at the beginning of the area with the narrowest radial constriction of the outer conductor contact element.
- the cable has a support sleeve that encloses the electrical inner conductor.
- the exposed outer conductor of the cable is folded back around the support sleeve.
- the inner diameter of the support sleeve is preferably designed to be slightly larger than the outer diameter of the outer conductor, so that the support sleeve can be easily applied to the outside of the outer conductor.
- the support sleeve prevents damage to the electrical inner conductor.
- the support sleeve enables improved compression of the outer conductor and outer conductor contact element.
- Filling element should therefore be designed in such a way that the filling element, when installed within the cable arrangement, fills the area between the outer conductor contact element and the insulator part as optimally as possible.
- the electrically conductive and elastic filling element has an electrically conductive wire, ie a metallic wire, which is three-dimensionally braided.
- the three-dimensional braiding of the metallic wire can be completely disordered or in a specific order structure.
- the three-dimensionally braided metallic wire is compressed within the filling element with a view to a certain shape and a certain extent when the filling element is not installed.
- the three-dimensionally braided metallic wire can also be integrated into an elastomer within the filling element.
- the insulator part and the outer conductor are each arranged coaxially to the single electrical inner conductor.
- a filling element that is inserted into such a cable arrangement is therefore also preferably arranged coaxially to the single electrical inner conductor.
- Such a filling element thus has a rotationally symmetrical shape, preferably an annular or a hollow cylindrical shape.
- the invention also includes a connector arrangement with a connector, preferably a plug connector, and a cable arrangement.
- the outer conductor contact element of the cable arrangement is connected to the outer conductor contact of the connector or the plug connector.
- the outer conductor contact element of the cable arrangement and the outer conductor contact of the connector or the plug connector can be implemented as a single element.
- the connector can also be implemented as a screw connector or using another connection technology.
- FIG. 1A Schematically illustrated connector arrangement 10 according to the invention, which is implemented as a plug connector arrangement, comprises a connector 20 and a cable 30 connected thereto.
- the connector 20 is implemented as a plug connector, which in turn is designed as a plug.
- the connector arrangement shown is a coaxial connector arrangement consisting of a coaxial connector and a coaxial cable.
- non-coaxial connector arrangements consisting of a non-coaxial connector or plug connector and an associated non-coaxial cable are also covered by the invention, as already mentioned above.
- the cable 30, designed as a coaxial cable has an electrical inner conductor 31, an insulator element 32 coaxially surrounding the electrical inner conductor 31, an outer conductor 33 made of a wire mesh or a conductive film coaxially surrounding the insulator element 32 and a cable sheath 34 made of an electrically insulating material surrounding the outer conductor 33 such as plastic.
- Fig. 1A the electrical inner conductor 31 of the cable 30 is stripped at its end facing the connector 20, ie opposite the insulator part 32 exposed.
- the insulator part 32 is also exposed to the outer conductor 33 at its end facing the connector 20.
- the outer conductor 33 is also exposed by the cable jacket 34 at its end facing the connector 20.
- the crimping or pressing process takes place between the cable 30 and the outer conductor contact element 35 in three different sections of the outer conductor contact element 35:
- a first section of the external conductor contact element 35 which is in Fig. 1A is marked with A
- the outer conductor contact element 35 is fixed to the cable jacket 34 by means of an insulation crimp.
- the outer diameter of the cable jacket 34 is as follows due to the insulation crimping Fig. 1A can be seen, slightly reduced or squeezed in the area of the insulation crimp.
- a second section of the external conductor contact element 35 which is in Fig. 1A marked B, is the exposed shielding braid of the outer conductor 33 around a support sleeve 36 repulsed.
- the inner diameter of the support sleeve 36 essentially corresponds to the outer diameter of the outer conductor 33 in order to enable the cable 23 with its outer conductor 33 to be easily inserted into the bore of the support sleeve 36.
- the support sleeve 36 is fixed to the outer conductor 33 of the cable 23 by crimping.
- the length of the outer conductor 33 which can be easily folded back around the fixed support sleeve 36 due to its design as a shielding braid or conductive film, is designed in such a way that it can be folded back over the entire longitudinal extent of the support sleeve 36. Because the outer conductor rests on the support sleeve 36 radially outside the support sleeve 36 along the entire longitudinal extent of the support sleeve 36, the best possible holding force between the outer conductor 33 and the outer conductor contact sleeve 36 can be achieved.
- the outer diameter of the outer conductor 33 folded back around the support sleeve 36 essentially corresponds to the inner diameter of the outer conductor contact element 35.
- the support sleeve 36 which is surrounded both radially inside and radially outside by the outer conductor 33, enables a more stable fixation of the outer conductor contact element 35 on the outer conductor 33 of the cable 30 during the crimping or pressing process.
- the support sleeve 36 prevents damage to the electrical inner conductor 31 with such a conductor crimp.
- the section of the outer conductor 33 located radially inside the support sleeve 36 has a slightly reduced or squeezed shape in the area of the support sleeve 36 due to the conductor crimp Outer diameter on how out Fig. 1A can be recognized.
- a third section of the external conductor contact element 35 which is in Fig. 1A is marked with C and is located between the axial end of the outer conductor 33 and an end of the outer conductor contact element 35 facing the connector 20, there is a so-called waist crimp. With this waist crimp, the outer conductor contact element 35 has a radial narrowing. The outer conductor contact element 35 rests on the exposed insulator part 32 of the cable 30 in the area of its narrowest radial constriction.
- the outer conductor-side high-frequency signal path is formed by the outer conductor contact element 35.
- the distance between the outer conductor side and the inner conductor side signal routing and thus the impedance in this section would change compared to the sections of the high-frequency signal path in which an outer conductor 33 of the cable 30 is still present. This impedance mismatch adversely causes reflections of higher-frequency signal components and worsens the transmission characteristics of the high-frequency signal path.
- the inner diameter of the outer conductor contact element 35 is returned to the inner diameter of the outer conductor 33 of the cable 30 in the area of the narrowest radial constriction.
- the impedance of the high-frequency signal path is back to the impedance in the area of the narrowest radial constriction of the outer conductor contact element 35 of the high-frequency signal path within the cable 30 and in the area of the outer conductor contact element 35 up to the axial end of the outer conductor 33.
- the external conductor contact element 35 has a section which is in Fig. 1A is marked with D, in which, on the one hand, there is no outer conductor 33 of the cable 30 and, on the other hand, the distance between the outer conductor contact element 35 and the electrical inner conductor 33 does not correspond to the adjusted distance between the signal routing on the outer conductor side and the inner conductor side.
- this is due to the fact that the change in diameter of the outer conductor contact element 35 does not occur abruptly, ie discontinuously, but rather in a continuous transition over a certain axial longitudinal extent.
- the distance between the axial end of the outer conductor 33 and the beginning of the narrowest radial constriction in which the outer conductor contact element 35 rests on the insulator part 33 is typically less than 2 mm, preferably less than 0.5 mm.
- a cavity is formed which is filled only with air.
- the high-frequency signal path has a discontinuity in its impedance curve, which affects the transmission characteristics in particular for higher-frequency signal components in the two or three-digit gigahertz range.
- an electrically conductive and elastic filling element 37 is arranged in this area, which is located adjacent to the axial end of the outer conductor 33. Due to the elasticity of the filling element 37, it is possible for the cavity that forms between the axial end of the outer conductor 33, the outer conductor contact element 35 and the insulator part 33 to be filled as far as possible with the filling element 37.
- the electrically conductive filling element 37 to fill the area up to the insulator part 33 and thus a substantially constant inner diameter on the outer conductor side from the outer conductor 33 of the cable 30 in section B via the electrically conductive and elastic filling element 37 in section D to for the narrowest radial narrowing of the outer conductor contact element 35 in section C.
- the high-frequency signal path therefore has essentially no discontinuities in its impedance curve in these sections and enables optimized transmission behavior for high-frequency signals up to the two- and three-digit gigahertz range.
- the electrically conductive and elastic filling element 37 encloses the insulator element 33 and thus has a rotationally symmetrical shape, preferably an annular or sleeve-shaped shape Fig. 2A on.
- the electrically conductive and elastic filling element 37 is according to Fig. 2B made from an elastomer with integrated electrically conductive particles, preferably metallic particles.
- the number, the size, The shape and arrangement of the individual electrically conductive particles within the filling element 37 made of elastomer must be chosen so that the electrically conductive and elastic filling element has sufficient electrical conductivity for high-frequency signals up to the two- or three-digit gigahertz range.
- the electrically conductive and elastic filling element 37 is according to Fig. 2C Made from an elastomer with an integrated electrically conductive wire that is three-dimensionally braided.
- the three-dimensional braiding of the electrically conductive wire can be completely disordered or in a specific order structure.
- the length, the diameter, the type of braiding and the density of the electrically conductive and three-dimensionally braided wire must be selected so that the electrically conductive and elastic filling element has sufficient electrical conductivity for high-frequency signals up to the two - or three-digit gigahertz range.
- the external conductor contact element 35 is according to Fig. 1A at its end facing the connector 20, at which it has the same diameter as at its end facing the cable 30, is connected to the external conductor contact 21, preferably by means of a welded connection.
- This welded connection between the external conductor contact element 35 and the external conductor contact 21 of the connector 20 designed as a plug connector can, as in Fig. 1A is shown, realized radially within the outer conductor contact 21, but also radially outside the outer conductor contact 21 of the connector 20.
- the electrical inner conductor 31 of the cable 30 is connected to the inner conductor contact 23 of the connector 20 in an electrically and mechanically stable manner at the cable-side end of the connector 20, which is implemented as a plug connector, via a crimp connection 22.
- a soldered connection is alternatively also conceivable.
- the inner conductor contact 23 is arranged coaxially to the outer conductor contact 21 within the connector 20 via at least one insulator part 24.
- the connector 20, designed as a plug connector, is shown in FIG Fig. 1A
- the variant shown is implemented as a plug.
- the inner conductor contact 23 is thus shaped like a pin at the plug-side end of the plug connector within the socket-shaped outer conductor contact 21.
- the connector 20 which is designed as a plug connector, is implemented as a coupler.
- the inner conductor contact 23 of the connector 23 is thus designed to be socket-shaped.
- the socket-shaped external conductor contact 21 of the connector 20 designed as a coupler is designed as a spring basket or spring sleeve in order to realize an elasticity on the plug-in side, which forms the necessary elasticity for a plug-in process with a connector 20 designed as a plug.
- the cable 30 forms a cable arrangement with the external conductor contact element 35 attached to it.
- the external conductor contact element 35 does not necessarily have to be connected to a connector 20 in a connector arrangement 10.
- the external conductor contact element 35 can be firmly connected in an inseparable connection to another cable, preferably a high-frequency cable, at its end facing away from the cable 30.
- an inseparable connection i.e. preferably a soldered connection, of the outer conductor contact element 35 with an outer conductor-side contact connection or ground connection on a circuit board or in a housing is also possible.
- the electrical inner conductor 31 of the cable 30 is preferably connected via a solder connection to an inner conductor-side contact connection on a circuit board or in a housing.
Landscapes
- Coupling Device And Connection With Printed Circuit (AREA)
Description
Die vorliegende Erfindung betrifft eine Kabelanordnung.The present invention relates to a cable assembly.
Kabel werden in einer lösbaren Verbindung über Verbinder, bevorzugt über Steckverbinder, mit einem anderen Kabel oder mit einer Leiterplatte verbunden. Alternativ kann das Kabel in einer unlösbaren Verbindung, d.h. in einer fixierten Verbindung, direkt ohne Verwendung eines Verbinders mit einem anderen Kabel oder einer Leiterplatte verbunden sein.Cables are connected in a detachable connection via connectors, preferably via plug connectors, to another cable or to a circuit board. Alternatively, the cable can be connected in a non-detachable connection, i.e. in a fixed connection, directly to another cable or a circuit board without using a connector.
Bei einem Hochfrequenzkabel ist sowohl für den Innenleiter als auch für den Außenleiter jeweils im Fall einer lösbaren Verbindung eine sichere Verbindung mit dem zugehörigen innenleiterseitigen Kontakt bzw. dem außenleiterseitigen Kontakt des Verbinders zu realisieren. Äquivalent ist im Fall einer unlösbaren Verbindung mit einem anderen Kabel oder einer Leiterplatte eine sichere Verbindung zum Innenleiter und Außenleiter des anderen Hochfrequenzkabels bzw. zum innenleiterseitigen und außenleiterseitigen Kontakt auf der Leiterplatte herzustellen.In the case of a high-frequency cable, a secure connection with the associated inner conductor-side contact or the outer conductor-side contact of the connector must be realized for both the inner conductor and the outer conductor in the case of a detachable connection. Equivalently, in the case of an inseparable connection to another cable or a circuit board, a secure connection must be established to the inner conductor and outer conductor of the other high-frequency cable or to the contact on the inner conductor side and outer conductor side on the circuit board.
Im Kabelsteckverbinder der
Die
Die
Für die außenleiterseitige Verbindung hat sich das Crimpen bzw. Verpressen bewährt. Hierzu wird der Außenleiter über einen bestimmten Abschnitt am Kabelende vom Kabelmantel befreit und somit abisoliert. Der Außenleiter des Hochfrequenzkabels ist somit in diesem Abschnitt freigelegt. Anschließend wird der freigelegte Abschnitt des Außenleiters mit einem elektrisch leitenden Außenleiterkontaktelement in einem Crimpprozess verbunden. Auf diese Weise ist eine mechanisch stabile Verbindung zwischen dem Außenleiter des Hochfrequenzkabels und dem Außenleiterkontaktelement und damit ein sicherer elektrischer Kontakt zwischen Außenleiter und Außenleiterkontaktelement über einen derartigen Leitercrimp hergestellt.Crimping or pressing has proven successful for the connection on the external conductor side. For this purpose, the outer conductor is freed from the cable jacket over a certain section at the end of the cable and thus stripped of insulation. The outer conductor of the high-frequency cable is thus exposed in this section. The exposed section of the outer conductor is then connected to an electrically conductive outer conductor contact element in a crimping process. In this way, a mechanically stable connection between the outer conductor of the high-frequency cable and the outer conductor contact element and thus a secure electrical contact between the outer conductor and the outer conductor contact element is established via such a conductor crimp.
Das Außenleiterkontaktelement besitzt im Hinblick auf eine hochfrequenztechnisch optimierte Übertragung und Kontaktierung äquivalent zum Außenleiter des Hochfrequenzkabels eine Koaxialität zum Innenleiter und ist somit bevorzugt hülsenförmig ausgeformt. Ein derartig ausgeformtes Außenleiterkontaktelement wird deshalb auch als Crimphülse bezeichnet.With regard to high-frequency technology-optimized transmission and contacting, the outer conductor contact element has a coaxiality with the inner conductor equivalent to the outer conductor of the high-frequency cable and is therefore preferably formed in the shape of a sleeve. An external conductor contact element shaped in this way is therefore also referred to as a crimp sleeve.
Zur Verbesserung der Verpressung und zur Verhinderung einer Beschädigung des Innenleiters beim Crimpen ist der freigelegte Außenleiter um eine Stützhülse herumgeschlagen, die eine bestimmte Wandstärke aufweist. Die Crimphülse, die mit dem Außenleiter im Bereich der Stützhülse vercrimpt wird, weist somit einen größeren Innendurchmesser als der Innendurchmesser des Außenleiters im Hochfrequenzkabel auf. Diese sprunghafte Änderung des Abstands zwischen dem Innenleiter und dem Außenleiter des Kabels einerseits und zwischen dem Innenleiter des Kabels und dem Außenleiterkontaktelement andererseits führt nachteilig zu einem induktiveren Hochfrequenzsignalpfad und damit zu einer unerwünschten Änderung der Impedanz im Signalpfad. Um zumindest näherungsweise eine gleichbleibende Impedanz nicht nur innerhalb des Hochfrequenzkabels, sondern entlang der gesamten Längserstreckung des Außenleiterkontaktelements zu verwirklichen, weist die Crimphülse eine radiale Verengung auf. Diese radiale Verengung der Crimphülse ist, wie beispielsweise aus der
Aufgrund von Fertigungstoleranzen der einzelnen Komponenten und der einzelnen Montageschritte bildet sich zwischen der Crimphülse und dem Isolatorteil des Hochfrequenzkabels im Bereich zwischen dem axialen Ende des Außenleiters des Hochfrequenzkabels und der radialen Verengung der Crimphülse ein Hohlraum aus. Dieser einzig mit Luft gefüllte Hohlraum, der zwischen den einzelnen konfektionierten Kabeln jeweils schwanken kann, stellt eine Störstelle im Hochfrequenzsignalpfad dar. Im Bereich dieses Hohlraumes ist der Abstand des Außenleiterkontakts zum Innenleiter gegenüber dem Abstand des Außenleiters bzw. des Außenleiterkontakts zum Innenleiter im übrigen Signalpfad vergrößert. Diese Störstelle im Impedanzverlauf des Hochfrequenzsignalpfads beeinträchtigt nachteilig das Übertragungsverhalten eines Hochfrequenzsignals insbesondere im zwei- oder dreistelligen Gigahertzbereich.Due to manufacturing tolerances of the individual components and the individual assembly steps, a cavity forms between the crimp sleeve and the insulator part of the high-frequency cable in the area between the axial end of the outer conductor of the high-frequency cable and the radial narrowing of the crimp sleeve. This cavity, which is only filled with air and can fluctuate between the individual assembled cables, represents a fault point in the high-frequency signal path. In the area of this cavity, the distance between the outer conductor contact and the inner conductor is increased compared to the distance between the outer conductor and the outer conductor contact to the inner conductor in the rest of the signal path . This defect in the impedance curve of the high-frequency signal path adversely affects the transmission behavior of a high-frequency signal especially in the two- or three-digit gigahertz range.
Dies ist ein Zustand, den es zu verbessern gilt.This is a situation that needs to be improved.
Vor diesem Hintergrund liegt der vorliegenden Erfindung die Aufgabe zugrunde, eine Kabelanordnung umfassend ein Kabel und ein Außenleiterkontaktelement zu schaffen, die in ihrem Hochfrequenzübertragungsverhalten optimiert ist.Against this background, the present invention is based on the object of creating a cable arrangement comprising a cable and an external conductor contact element, which is optimized in its high-frequency transmission behavior.
Erfindungsgemäß wird diese Aufgabe durch eine Kabelanordnung mit den Merkmalen des Patentanspruchs 1 gelöst.According to the invention, this object is achieved by a cable arrangement with the features of patent claim 1.
Demgemäß ist vorgesehen:
Eine Kabelanordnung mit
- einem Kabel, welches einen Außenleiter, einen elektrischen Innenleiter, ein Isolatorteil und eine Stützhülse aufweist,
- einem Außenleiterkontaktelement und
- einem Füllelement,
- wobei das Isolatorteil zwischen dem Außenleiter und dem elektrischen Innenleiter angeordnet ist,
- wobei die Stützhülse am Außenleiter fixiert ist und der Außenleiter um die Stützhülse herum zurückgeschlagen ist,
- wobei das Außenleiterkontaktelement mit dem zurückgeschlagenen Außenleiter elektrisch verbunden ist und eine Durchmesserveränderung aufweist,
- wobei das Füllelement das Isolatorteil konzentrisch umschließt,
- wobei das Füllelement in einem Bereich zwischen einem axialen Ende des zurückgeschlagenen Außenleiters und der Durchmesseränderung des Außenleiterkontaktelements innerhalb des Außenleiterkontaktelements angeordnet ist,
- wobei das Füllelement elektrisch leitfähig und elastisch ist und eingerichtet ist, einen Lufteinschluss im Bereich zwischen dem axialen Ende des zurückgeschlagenen Außenleiters und der Durchmesserveränderung des Au-ßenleiterkontaktelements innerhalb des Außenleiterkontaktelements zu reduzieren.
A cable arrangement with
- a cable which has an outer conductor, an electrical inner conductor, an insulator part and a support sleeve,
- an external conductor contact element and
- a filling element,
- wherein the insulator part is arranged between the outer conductor and the electrical inner conductor,
- wherein the support sleeve is fixed to the outer conductor and the outer conductor is folded back around the support sleeve,
- wherein the external conductor contact element is electrically connected to the folded-back external conductor and has a change in diameter,
- wherein the filling element concentrically encloses the insulator part,
- wherein the filling element is arranged in a region between an axial end of the folded-back outer conductor and the change in diameter of the outer conductor contact element within the outer conductor contact element,
- wherein the filling element is electrically conductive and elastic and is designed to reduce an air inclusion in the area between the axial end of the folded-back outer conductor and the change in diameter of the outer conductor contact element within the outer conductor contact element.
Die der vorliegenden Erfindung zugrundeliegende Erkenntnis/Idee besteht darin, zumindest einen Teil der im Hohlraum eingeschlossenen Luft, die elektrisch nicht leitfähig ist, durch ein elektrisch leitfähiges Füllelement zu ersetzen. Optimaler Weise wird die im Hohlraum eingeschlossene Luft vollständig durch das elektrisch leitfähige Füllelement ersetzt. Auf diese Weise ist außenleiterseitig der Bereich der Durchmesserveränderung des Außenleiterkontaktelements, d.h. der Bereich der radialen Verengung des Außenleiterkontaktelements, in dem sich nach dem Stand der Technik der mit Luft gefüllte Hohlraum ausbildete, bis zum Isolatorteil mit elektrisch leitfähigem Material ausgefüllt. Der außenleiterseitige Innendurchmesser ist somit im Bereich der Durchmesserveränderung des Außenleiterkontaktelements an den außenleiterseitigen Innendurchmesser in den übrigen Bereichen des Hochfrequenzkabels und des Außenleiterkontaktelements angepasst. Somit wird vorteilhaft ein gleichbleibender Impedanzverlauf über den gesamten Hochfrequenzsignalpfad innerhalb des Hochfrequenzkabels und des Außenleiterkontaktelements erreicht und damit der Einsatz des Hochfrequenzkabels, insbesondere im Übergang zu einem Verbinder, für Hochfrequenzsignale bis in den zwei- oder dreistelligen Gigahertzbereich erweitert.The knowledge/idea underlying the present invention is to replace at least part of the air enclosed in the cavity, which is not electrically conductive, with an electrically conductive filling element. Optimally, the air trapped in the cavity is completely replaced by the electrically conductive filling element. In this way, on the outer conductor side, the area of the change in diameter of the outer conductor contact element, ie the area of the radial narrowing of the outer conductor contact element, in which the air-filled cavity was formed according to the prior art, is filled with electrically conductive material up to the insulator part. The inner diameter on the outer conductor side is thus adapted in the area of the change in diameter of the outer conductor contact element to the inner diameter on the outer conductor side in the remaining areas of the high-frequency cable and the outer conductor contact element. This advantageously achieves a constant impedance curve over the entire high-frequency signal path within the high-frequency cable and the outer conductor contact element and thus allows the use of the high-frequency cable, in particular in the transition to a connector, for high-frequency signals expanded into the two- or three-digit gigahertz range.
Bei dem Kabel handelt es sich bevorzugt um ein Hochfrequenzkabel zur Übertragung eines Hochfrequenzsignals. Ein Hochfrequenzsignal ist im weitesten Sinne ein Signal im Frequenzbereich zwischen 3 MHz und 30 THz. Ein entsprechend der Erfindung im Automobilbereich zum Einsatz kommendes Hochfrequenzkabel ist für Anwendungen im einstelligen bis dreistelligen GHz-Bereich bestimmt. Bevorzugt ist das Hochfrequenzkabel ein Koaxialkabel mit einem elektrischen Innenleiter, einem den elektrischen Innenleiter koaxial umschließenden Isolatorteil, einem das Isolatorteil koaxial umschließenden Außenleiter und einem den Außenleiter koaxial umschließenden Kabelmantel. Daneben kann das Hochfrequenzkabel auch zwei elektrische Innenleiter und einen gemeinsamen Außenleiter zur Übertragung eines differenziellen Hochfrequenzsignals umfassen (sogenanntes geschirmtes Twisted-Pair-Kabel). Schließlich kann das Hochfrequenzkabel auch als geschirmtes Stern-Vierer-Kabel mit jeweils zwei überkreuzten und geschirmten Paaren von elektrischen Innenleitern realisiert sein. Daneben ist ein Hochfrequenzkabel mit einer beliebigen und technisch sinnvollen Anzahl von geschirmten Paaren von elektrischen Innenleitern möglich, die entweder parallel oder überkreuzt zueinander angeordnet sind.The cable is preferably a high-frequency cable for transmitting a high-frequency signal. In the broadest sense, a radio frequency signal is a signal in the frequency range between 3 MHz and 30 THz. A high-frequency cable used in the automotive sector according to the invention is intended for applications in the single-digit to three-digit GHz range. The high-frequency cable is preferably a coaxial cable with an electrical inner conductor, an insulator part coaxially surrounding the electrical inner conductor, an outer conductor coaxially surrounding the insulator part and a cable sheath coaxially surrounding the outer conductor. In addition, the high-frequency cable can also include two electrical inner conductors and a common outer conductor for transmitting a differential high-frequency signal (so-called shielded twisted pair cable). Finally, the high-frequency cable can also be implemented as a shielded star-quad cable, each with two crossed and shielded pairs of electrical inner conductors. In addition, a high-frequency cable is possible with any technically sensible number of shielded pairs of electrical inner conductors, which are arranged either parallel or crossed over one another.
Der Außenleiter des Kabels ist im Hinblick auf ein geringes Kabelgewicht und eine leichte Fertigbarkeit in Form eines metallischen Drahtgeschlechts oder einer metallischen Folie hergestellt. Der elektrische Innenleiter des Kabels ist als Seele herstellbar, die von einem Isolatorteil umgeben ist. Anstelle eines elektrischen Innenleiters und eines Isolatorteils ist auch eine isolierte Ader möglich.The outer conductor of the cable is made in the form of a metallic wire gender or a metallic foil with a view to low cable weight and easy manufacturability. The electrical inner conductor of the cable can be produced as a core that is surrounded by an insulator part. Instead of an electrical inner conductor and an insulator part, an insulated wire is also possible.
Ein Außenleiterkontaktelement einer Kabelanordnung ist ein Kontaktelement, das den außenleiterseitigen elektrischen Kontakt zwischen dem Außenleiter des Hochfrequenzkabels und einem Außenleiterkontakt eines Verbinders, bevorzugt eines Steckverbinders, verwirklicht. Das Außenleiterkontaktelement einer Kabelanordnung ist mit dem Außenleiterkontakt des Verbinders bzw. des Steckverbinders unlösbar beispielsweise über eine Schweißverbindung verbunden. Alternativ kann das Außenleiterkontaktelement der Kabelanordnung und der Außenleiterkontakt des Verbinders bzw. des Steckverbinders als einziges Bauteil realisiert sein. Neben der elektrischen außenleiterseitigen Kontaktierung übernimmt das Außenleiterkontaktelement der Kabelanordnung vor allem eine elektrische Schirmung im Übergangsbereich zwischen dem Hochfrequenzkabel und dem Verbinder bzw. dem Steckverbinder. Äquivalent kann das Außenleiterkontaktelement der Kabelanordnung in einer unlösbaren Verbindung mit dem Außenleiter eines weiteren Kabels oder mit dem außenleiterseitigen Kontaktanschluss auf einer Leiterplatte oder auf einem Gehäuse elektrisch verbunden sein.An outer conductor contact element of a cable arrangement is a contact element that realizes the outer conductor-side electrical contact between the outer conductor of the high-frequency cable and an outer conductor contact of a connector, preferably a plug connector. The outer conductor contact element of a cable arrangement is permanently connected to the outer conductor contact of the connector or the plug connector, for example via a welded connection. Alternatively, the outer conductor contact element of the cable arrangement and the outer conductor contact of the connector or the plug connector can be implemented as a single component. In addition to the electrical contact on the external conductor side, the external conductor contact element of the cable arrangement primarily provides electrical shielding in the transition area between the high-frequency cable and the connector or the plug connector. Equivalently, the outer conductor contact element of the cable arrangement can be electrically connected in an inseparable connection to the outer conductor of another cable or to the outer conductor-side contact connection on a circuit board or on a housing.
Das Außenleiterkontaktelement umschließt den freigelegten elektrischen Innenleiter und das freigelegte Isolatorteil des Kabels und ist deshalb insbesondere im Hinblick auf seine Schirmungsaufgabe bevorzugt hülsenförmig ausgeformt. Das hülsenförmige Außenleiterkontaktelement weist zur Realisierung einer Koaxialität zu einem einzigen elektrischen Innenleiter eines Kabels bevorzugt ein rundes Querschnittsprofil auf. Daneben sind für das Außenleiterkontaktelement insbesondere bei einem Kabel mit mehreren elektrischen Innenleitern auch andere Querschnittsprofile wie beispielsweise ein quadratisches, rechteckförmiges oder elliptisches Querschnittsprofil von der Erfindung mit abgedeckt. Das jeweils verwendete Querschnittsprofil hängt auch vom verwendeten Crimpverfahren ab.The outer conductor contact element encloses the exposed electrical inner conductor and the exposed insulator part of the cable and is therefore preferably shaped like a sleeve, particularly with regard to its shielding task. The sleeve-shaped outer conductor contact element preferably has a round cross-sectional profile in order to achieve coaxiality with a single electrical inner conductor of a cable. In addition, other cross-sectional profiles such as a square, rectangular or elliptical cross-sectional profile are also suitable for the outer conductor contact element, particularly in the case of a cable with several electrical inner conductors covered by the invention. The cross-sectional profile used also depends on the crimping process used.
Das Außenleiterkontaktelement ist mit dem Außenleiter des Kabels bevorzugt über eine Crimp- oder Pressverbindung mechanisch und elektrisch verbunden. Neben einer Crimpverbindung ist auch eine Lötverbindung denkbar.The outer conductor contact element is mechanically and electrically connected to the outer conductor of the cable, preferably via a crimp or press connection. In addition to a crimp connection, a solder connection is also conceivable.
Die Durchmesserveränderung des Außenleiterkontaktelements kann sprunghaft, d.h. unstetig, erfolgen. Fertigungsbedingt verläuft die Durchmesserveränderung des Außenleiterkontaktelements aber bevorzugt über eine bestimmte axiale Erstreckung und weist einen stetigen Verlauf, d.h. einen verschliefenen oder S-förmigen Verlauf, auf.The change in diameter of the external conductor contact element can occur suddenly, i.e. discontinuously. Due to the manufacturing process, the change in diameter of the outer conductor contact element preferably extends over a certain axial extent and has a continuous course, i.e. a smooth or S-shaped course.
Das in der erfindungsgemäßen Kabelanordnung verwendete elektrisch leitfähige Füllelement ist aus einem einzigen elektrischen leitfähigen Material oder aus einem Verbundmaterial mit mehreren elektrisch leitfähigen Einzelmaterialien hergestellt. Daneben kann das elektrisch leitfähige Füllelement auch aus einem Verbundmaterial mit mindestens einem elektrisch leitfähigen Einzelmaterial und mindestens einem dielektrischen Einzelmaterial hergestellt sein. Entscheidend ist hierbei, dass das elektrisch leitfähige Füllelement eine ausreichende elektrische Leitfähigkeit für Hochfrequenzsignale im genannten Frequenzbereich aufweist.The electrically conductive filling element used in the cable arrangement according to the invention is made from a single electrically conductive material or from a composite material with several electrically conductive individual materials. In addition, the electrically conductive filling element can also be made from a composite material with at least one electrically conductive individual material and at least one dielectric individual material. What is crucial here is that the electrically conductive filling element has sufficient electrical conductivity for high-frequency signals in the frequency range mentioned.
Das elektrisch leitfähige Füllelement kann hierbei ein in sich geschlossenes Bauelement ohne Einschlüsse oder ein Bauelement mit Einschlüssen sein. Das Füllelement kann entsprechend bekannter Ausformungen, beispielsweise als ringförmige Ausformung, ausgeformt sein oder jede beliebige komplexe und filigrane Ausformung aufweisen. Entscheidend ist hierbei vielmehr, dass durch das elektrisch leitfähige Füllelement der ursprünglich mit Luft gefüllte Hohlraum in der Kabelanordnung zumindest teilweise durch ein elektrisch leitfähiges Material des Füllelements ersetzt ist.The electrically conductive filling element can be a self-contained component without inclusions or a component with inclusions. The filling element can be shaped according to known shapes, for example as an annular shape, or any complex and have a delicate shape. What is crucial here is that the electrically conductive filling element replaces the cavity in the cable arrangement, which was originally filled with air, at least partially by an electrically conductive material of the filling element.
Vorteilhafte Ausgestaltungen und Weiterbildungen ergeben sich aus den weiteren Unteransprüchen sowie aus der Beschreibung unter Bezugnahme auf die Figuren der Zeichnung.Advantageous refinements and further developments result from the further subclaims and from the description with reference to the figures in the drawing.
Es versteht sich, dass die voranstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It is understood that the features mentioned above and those to be explained below can be used not only in the combination specified in each case, but also in other combinations or alone, without departing from the scope of the present invention.
In einer bevorzugten Ausprägung der Erfindung ist das elektrisch leitfähige Füllelement benachbart zu einem axialen Ende des Außenleiters des Kabels innerhalb des Außenleiterkontaktelements angeordnet. Das elektrisch leitfähige Füllelement füllt somit vorteilhafterweise in axialer Kabellängsrichtung den Bereich zwischen dem axialen Ende des Außenleiters und der Durchmesseränderung des Außenleiterkontaktelements innerhalb des Außenleiterkontaktelements zumindest teilweise auf. Der Abstand zwischen dem axialen Ende des Außenleiters und der Durchmesserveränderung des Außenleiterkontaktelements, bevorzugt der Abstand zwischen dem axialen Ende des Außenleiters und einem dem Verbinder bzw. dem Steckverbinder zugewandten Ende des bevorzugt S-förmigen Verlaufs der Durchmesserveränderung des Außenleiterkontaktelements, ist bevorzugt kleiner als 2 mm, insbesondere kleiner als 0,5 mm.In a preferred embodiment of the invention, the electrically conductive filling element is arranged adjacent to an axial end of the outer conductor of the cable within the outer conductor contact element. The electrically conductive filling element thus advantageously at least partially fills the area in the axial longitudinal direction of the cable between the axial end of the outer conductor and the change in diameter of the outer conductor contact element within the outer conductor contact element. The distance between the axial end of the outer conductor and the change in diameter of the outer conductor contact element, preferably the distance between the axial end of the outer conductor and an end of the preferably S-shaped course of the change in diameter of the outer conductor contact element facing the connector or the plug connector, is preferably less than 2 mm , especially smaller than 0.5 mm.
Die axiale Längserstreckung des Füllelements ist im nicht eingebauten Zustand des Füllelements somit derart auszulegen, dass das Füllelement im eingebauten Zustand innerhalb der Kabelanordnung den Bereich zwischen dem axialen Ende des Außenleiters und bevorzugt einem dem Verbinder bzw. dem Steckverbinder zugewandten Ende des insbesondere S-förmigen Verlaufs der Durchmesserveränderung des Außenleiterkontaktelements möglichst optimal ausfüllt.The axial longitudinal extent of the filling element is therefore to be designed in the uninstalled state of the filling element in such a way that the filling element in the installed state within the cable arrangement covers the area between the axial end of the outer conductor and preferably an end of the particularly S-shaped course facing the connector or the plug connector the change in diameter of the outer conductor contact element fills it as optimally as possible.
Erfindungsgemäß weist das Kabel neben dem Außenleiter einen elektrischen Innenleiter und ein Isolatorteil auf, welches zwischen dem Außenleiter und dem elektrischen Innenleiter angeordnet ist. Am Kabelende, an dem das Kabel mit einem Verbinder bzw. Steckverbinder verbunden ist, ist der elektrische Innenleiter vom Isolatorteil und das Isolatorteil vom Außenleiter jeweils freigelegt.According to the invention, in addition to the outer conductor, the cable has an electrical inner conductor and an insulator part, which is arranged between the outer conductor and the electrical inner conductor. At the end of the cable, at which the cable is connected to a connector or plug connector, the electrical inner conductor of the insulator part and the insulator part of the outer conductor are each exposed.
Da das Füllelement benachbart zum axialen Ende des Außenleiters angeordnet ist, befindet sich das Füllelement im Bereich des freigelegten Isolatorteils. Erfindungsgemäß ist das Füllelement in einem Bereich zwischen dem axialen Ende des Außenleiters und der Durchmesseränderung des Außenleiterkontaktelements zwischen dem Außenleiterkontaktelement und dem Isolator angeordnet. Das Füllelement umschließt konzentrisch das Isolatorteil des Kabels. Das elektrisch leitfähige Füllelement liegt im eingebauten Zustand innerhalb der Kabelanordnung bevorzugt am Isolatorteil an. Außerdem liegt das elektrisch leitfähige Füllelement bevorzugt am Außenleiterkontaktelement an. Das elektrisch leitfähige Füllelement füllt somit vorteilhafterweise auch in einer Querrichtung zur Längserstreckung des Kabels den Bereich zwischen dem Außenleiterkontaktelement und dem Isolatorteil zumindest teilweise, bevorzugt vollständig, auf.Since the filling element is arranged adjacent to the axial end of the outer conductor, the filling element is located in the area of the exposed insulator part. According to the invention, the filling element is arranged in a region between the axial end of the outer conductor and the change in diameter of the outer conductor contact element between the outer conductor contact element and the insulator. The filling element concentrically encloses the insulator part of the cable. When installed, the electrically conductive filling element preferably lies against the insulator part within the cable arrangement. In addition, the electrically conductive filling element preferably rests on the external conductor contact element. The electrically conductive filling element thus advantageously also at least partially, preferably completely, fills the area between the outer conductor contact element and the insulator part in a transverse direction to the longitudinal extent of the cable.
Die Durchmesserveränderung des Außenleiterkontaktelements stellt bevorzugt eine radiale Verengung dar. Die radiale Verengung des Außenleiterkontaktelements ist bevorzugt derart auszulegen, dass das Außenleiterkontaktelement im Bereich der kleinsten radialen Verengung am Isolatorteil aufliegt. Somit ist der Bereich, in dem ein Füllelement angeordnet sein kann, mit dem Beginn des Bereiches mit der engsten radialen Verengung des Außenleiterkontaktelements abgeschlossen.The change in diameter of the outer conductor contact element preferably represents a radial narrowing. The radial narrowing of the outer conductor contact element is preferably designed such that the outer conductor contact element rests on the insulator part in the area of the smallest radial narrowing. The area in which a filling element can be arranged is therefore closed at the beginning of the area with the narrowest radial constriction of the outer conductor contact element.
Das Kabel weist eine Stützhülse auf, die den elektrischen Innenleiter umschließt. Um die Stützhülse herum ist der freigelegte Außenleiter des Kabels zurückgeschlagen. Der Innendurchmesser der Stützhülse ist bevorzugt etwas größer als der Außendurchmesser des Außenleiters ausgelegt, sodass die Stützhülse problemlos außen auf den Außenleiter aufzubringen ist. Beim Crimp- oder Pressvorgang verhindert die Stützhülse eine Beschädigung des elektrischen Innenleiters. Außerdem ermöglicht die Stützhülse eine verbesserte Verpressung von Außenleiter und Außenleiterkontaktelement. Das Außenleiterkontaktelement, das nach dem Crimp- oder Pressvorgang mit dem freigelegten und über die Stützhülse zurückgeschlagenen Außenleiter im Bereich der Stützhülse elektrisch verbunden ist, ist hinsichtlich seines Innendurchmessers an den Außendurchmesser des zurückgeschlagenen Außenleiters angepasst. Der Abstand zwischen dem Außenleiterkontaktelement im Bereich der Stützhülse, d.h. im nicht verengten Durchmesserbereich des Außenleiterkontaktelements, zum Isolatorteil ist bevorzugt kleiner als 1,5 mm, insbesondere kleiner als 1,0 mm. Zusätzlich ist die Quererstreckung des Füllelements im nicht eingebauten Zustand des Füllelements somit derart auszulegen, dass das Füllelement im eingebauten Zustand innerhalb der Kabelanordnung den Bereich zwischen dem Außenleiterkontaktelement und dem Isolatorteil möglichst optimal ausfüllt.The cable has a support sleeve that encloses the electrical inner conductor. The exposed outer conductor of the cable is folded back around the support sleeve. The inner diameter of the support sleeve is preferably designed to be slightly larger than the outer diameter of the outer conductor, so that the support sleeve can be easily applied to the outside of the outer conductor. During the crimping or pressing process, the support sleeve prevents damage to the electrical inner conductor. In addition, the support sleeve enables improved compression of the outer conductor and outer conductor contact element. The outer conductor contact element, which after the crimping or pressing process is electrically connected to the exposed outer conductor in the area of the support sleeve and folded back over the support sleeve, is adapted in terms of its inner diameter to the outer diameter of the folded back outer conductor. The distance between the external conductor contact element in the area of the support sleeve, ie in the non-narrowed diameter region of the external conductor contact element, and the insulator part is preferably less than 1.5 mm, in particular less than 1.0 mm. In addition, the transverse extension of the filling element when not installed is Filling element should therefore be designed in such a way that the filling element, when installed within the cable arrangement, fills the area between the outer conductor contact element and the insulator part as optimally as possible.
Da das Außenleiterkontaktelement vorzugsweise im Bereich der Stützhülse mit dem Außenleiter des Kabels vercrimpt ist, ist das Außenleiterkontaktelement insbesondere im Bereich der Stützhülse bevorzugt als Crimphülse realisiert. Als Crimptyp wird bevorzugt der B-Crimp-Typ verwendet, der eine gute mechanische Stabilität der Crimpverbindung garantiert und einfach zu fertigen ist. Alternativ können aber auch andere Crimp-Typen Verwendung finden. Die Crimpverbindung wird durch eine von radial außen auf das Außenleiterkontaktelement aufgebrachte Presskraft hergestellt. Die Presskraft wird im Bereich der Stützhülse über den gesamten Umfang der Crimphülse aufgebracht, sodass die Crimphülse den um die Stützhülse zurückgeschlagenen Außenleiter vollständig umläuft.Since the outer conductor contact element is preferably crimped with the outer conductor of the cable in the area of the support sleeve, the outer conductor contact element is preferably implemented as a crimp sleeve, particularly in the area of the support sleeve. The preferred crimp type is the B crimp type, which guarantees good mechanical stability of the crimp connection and is easy to manufacture. Alternatively, other types of crimps can also be used. The crimp connection is produced by a pressing force applied to the outer conductor contact element from the radial outside. The pressing force is applied in the area of the support sleeve over the entire circumference of the crimp sleeve, so that the crimp sleeve completely runs around the outer conductor folded back around the support sleeve.
Neben diesem Leitercrimp wird im Hinblick auf eine stabilere Befestigung des Außenleiterkontaktelements auf das Kabel ein weiterer Crimp zwischen dem Außenleiterkontaktelement und dem Kabelmantel durchgeführt. Dieser weitere Crimp wird als Mantelcrimp oder Isolierungscrimp bezeichnet.In addition to this conductor crimp, a further crimp is carried out between the external conductor contact element and the cable jacket in order to ensure a more stable attachment of the outer conductor contact element to the cable. This additional crimp is called a sheath crimp or insulation crimp.
Das elektrisch leitende Füllelement ist elastisch. Insbesondere ist das elektrisch leitende Füllelement über seine gesamte Erstreckung elastisch. Auf diese Weise lässt sich das Füllelement an fertigungsbedingt unterschiedlich ausgeformte und fertigungsbedingt unterschiedlich große Hohlräume anpassen. Typischerweise ist das elastische Füllelement im eingebauten Zustand innerhalb der Kabelanordnung somit kleiner dimensioniert als im nicht eingebauten Zustand. Die Elastizität des Füllelements ermöglicht auch eine möglichst vollständige Ausfüllung des Hohlraums durch das Füllelement.The electrically conductive filling element is elastic. In particular, the electrically conductive filling element is elastic over its entire extent. In this way, the filling element can be adapted to cavities that are shaped differently and sized differently due to production. Typically, the elastic filling element is inside when installed The cable arrangement is therefore smaller than when it is not installed. The elasticity of the filling element also enables the cavity to be filled as completely as possible by the filling element.
In einer ersten Variante ist das elektrisch leitfähige und elastische Füllelement aus einem elektrisch leitfähigen Elastomer hergestellt. Hierbei handelt es sich bevorzugt um ein Elastomer, in dem in einer bestimmten Dichte elektrisch leitfähige Partikel, bevorzugt metallische Partikel, verstreut enthalten sind. Größe und Ausformung der einzelnen metallischen Partikel können geringfügig schwanken oder optimalerweise jeweils übereinstimmen. Größe, Anordnung und Verteilung der einzelnen metallischen Partikel innerhalb des Elastomers sind so zu wählen, dass das elektrisch leitfähige und elastische Füllelement eine ausreichende elektrische Leitfähigkeit über seine gesamte Erstreckung für ein Hochfrequenzsignal im genannten Frequenzbereich aufweist.In a first variant, the electrically conductive and elastic filling element is made from an electrically conductive elastomer. This is preferably an elastomer in which electrically conductive particles, preferably metallic particles, are scattered in a certain density. The size and shape of the individual metallic particles can vary slightly or, ideally, match. The size, arrangement and distribution of the individual metallic particles within the elastomer must be selected so that the electrically conductive and elastic filling element has sufficient electrical conductivity over its entire extent for a high-frequency signal in the frequency range mentioned.
In einer zweiten Variante weist das elektrisch leitfähige und elastische Füllelement einen elektrisch leitfähigen Draht, d.h. einen metallischen Draht, auf, der dreidimensional geflochten ist. Die dreidimensionale Flechtung des metallischen Drahts kann vollkommen ungeordnet oder in einer bestimmten Ordnungsstruktur vorliegen. Typischerweise ist der dreidimensional geflochtene metallische Draht im Hinblick auf eine bestimmte Form und eine bestimmte Ausdehnung im nicht eingebauten Zustand des Füllelements innerhalb des Füllelements zusammengepresst. Auch kann der dreidimensional geflochtene metallische Draht innerhalb des Füllelements in einem Elastomer integriert sein.In a second variant, the electrically conductive and elastic filling element has an electrically conductive wire, ie a metallic wire, which is three-dimensionally braided. The three-dimensional braiding of the metallic wire can be completely disordered or in a specific order structure. Typically, the three-dimensionally braided metallic wire is compressed within the filling element with a view to a certain shape and a certain extent when the filling element is not installed. The three-dimensionally braided metallic wire can also be integrated into an elastomer within the filling element.
Weist das Kabel nur einen einzigen elektrischen Innenleiter auf, so ist das Isolatorteil und der Außenleiter jeweils koaxial zum einzigen elektrischen Innenleiter angeordnet. Ein Füllelement, das in eine derartige Kabelanordnung eingefügt ist, ist somit ebenfalls bevorzugt koaxial zum einzigen elektrischen Innenleiter angeordnet. Somit weist ein derartiges Füllelement eine rotationssymmetrische Ausformung, bevorzugt eine ringförmige oder eine hohlzylindrische Ausformung, auf.If the cable only has a single electrical inner conductor, the insulator part and the outer conductor are each arranged coaxially to the single electrical inner conductor. A filling element that is inserted into such a cable arrangement is therefore also preferably arranged coaxially to the single electrical inner conductor. Such a filling element thus has a rotationally symmetrical shape, preferably an annular or a hollow cylindrical shape.
Schließlich umfasst die Erfindung auch eine Verbinderanordnung mit einem Verbinder, bevorzugt einem Steckverbinder, und einer Kabelanordnung. Das Außenleiterkontaktelement der Kabelanordnung ist hierbei mit dem Außenleiterkontakt des Verbinders bzw. des Steckverbinders verbunden. Alternativ kann das Außenleiterkontaktelement der Kabelanordnung und der Außenleiterkontakt des Verbinders bzw. des Steckverbinders als einziges Element realisiert sein. Anstelle eines Steckverbinders kann der Verbinder auch als Schraubverbinder oder mittels einer anderen Verbindungstechnik verwirklicht sein.Finally, the invention also includes a connector arrangement with a connector, preferably a plug connector, and a cable arrangement. The outer conductor contact element of the cable arrangement is connected to the outer conductor contact of the connector or the plug connector. Alternatively, the outer conductor contact element of the cable arrangement and the outer conductor contact of the connector or the plug connector can be implemented as a single element. Instead of a plug connector, the connector can also be implemented as a screw connector or using another connection technology.
Die obigen Ausgestaltungen und Weiterbildungen lassen sich, sofern sinnvoll, beliebig miteinander kombinieren. Weitere mögliche Ausgestaltungen, Weiterbildungen und Implementierungen der Erfindung umfassen auch nicht explizit genannte Kombinationen von zuvor oder im Folgenden bezüglich der Ausführungsbeispiele beschriebenen Merkmale der Erfindung. Insbesondere wird dabei der Fachmann auch Einzelaspekte als Verbesserungen oder Ergänzungen zu der jeweiligen Grundform der vorliegenden Erfindung hinzufügen.The above configurations and further developments can be combined with one another in any way, if it makes sense. Further possible refinements, further developments and implementations of the invention also include combinations of features of the invention described previously or below with regard to the exemplary embodiments that are not explicitly mentioned. In particular, the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the present invention.
Die vorliegende Erfindung wird nachfolgend anhand der in den schematischen Figuren der Zeichnung angegebenen Ausführungsbeispiele näher erläutert. Es zeigen dabei:
- Fig. 1A
- eine Querschnittsdarstellung einer erfindungsgemäßen Verbinderanordnung mit einem als Stecker realisierten Steckverbinder,
- Fig. 1B
- eine Querschnittsdarstellung einer erfindungsgemäßen Verbinderanordnung mit einem als Kuppler realisierten Steckverbinder,
- Fig. 2A
- eine Draufsicht eines Füllelement,
- Fig. 2B
- eine Querschnittsdarstellung einer ersten Variante des Füllelements und
- Fig. 2C
- eine Querschnittsdarstellung einer zweiten Variante des Füllelements
- Fig. 1A
- a cross-sectional view of a connector arrangement according to the invention with a connector implemented as a plug,
- Fig. 1B
- a cross-sectional view of a connector arrangement according to the invention with a plug connector implemented as a coupler,
- Fig. 2A
- a top view of a filling element,
- Fig. 2B
- a cross-sectional representation of a first variant of the filling element and
- Fig. 2C
- a cross-sectional view of a second variant of the filling element
Die beiliegenden Figuren der Zeichnung sollen ein weiteres Verständnis der Ausführungsformen der Erfindung vermitteln. Sie veranschaulichen Ausführungsformen und dienen im Zusammenhang mit der Beschreibung der Erklärung von Prinzipien und Konzepten der Erfindung. Andere Ausführungsformen und viele der genannten Vorteile ergeben sich im Hinblick auf die Zeichnungen. Die Elemente der Zeichnungen sind nicht notwendigerweise maßstabsgetreu zueinander gezeigt.The accompanying figures of the drawing are intended to provide a further understanding of the embodiments of the invention. They illustrate embodiments and, in connection with the description, serve to explain principles and concepts of the invention. Other embodiments and many of the advantages mentioned arise with regard to the drawings. The elements of the drawings are not necessarily shown to scale to one another.
In den Figuren der Zeichnung sind gleiche, funktionsgleiche und gleich wirkende Elemente, Merkmale und Komponenten - sofern nichts anderes ausgeführt ist - jeweils mit denselben Bezugszeichen versehen.In the figures of the drawing there are identical, functional and identical elements, features and components - if nothing else is stated - each provided with the same reference numerals.
Im Folgenden werden die Figuren zusammenhängend und übergreifend beschrieben.The figures are described in a coherent and comprehensive manner below.
Die in
Das als Koaxialkabel ausgeführte Kabel 30 weist einen elektrischen Innenleiter 31, ein den elektrischen Innenleiter 31 koaxial umschließendes Isolatorelement 32, einen das Isolatorelement 32 koaxial umschließenden Außenleiter 33 aus einem Drahtgeflecht oder einer leitenden Folie und einen den Außenleiter 33 umschließenden Kabelmantel 34 aus einem elektrisch isolierenden Material wie beispielsweise Kunststoff.The
Wie aus
Das dem Verbinder 20 zugewandte Kabelende des Kabels 30 ist in einem hülsenförmigen Außenleiterkontaktelement 35 aufgenommen. Der Innendurchmesser des Außenleiterkontaktelements 35 entspricht im Wesentlichen dem Außendurchmesser des Kabelmantels 34, sodass das Kabelende des Kabels 30 einschließlich eines bestimmten Abschnittes des Kabelmantels 34 in eine Öffnung des Außenleiterkontaktelements 35 einführbar ist und ein anschließender Crimp- bzw. Verpressprozess zwischen dem Außenleiterkontaktelement 35 und dem Kabel 30 möglich ist.The cable end of the
Wie bereits erwähnt erfolgt der Crimp- bzw. Verpressungvorgang zwischen dem Kabel 30 und dem Außenleiterkontaktelement 35 in drei verschiedenen Abschnitten des Außenleiterkontaktelement 35:
In einem ersten Abschnitt des Außenleiterkontaktelements 35, der in
In a first section of the external
In einem zweiten Abschnitt des Außenleiterkontaktelements 35, der in
Um das Kabel 30 mit seinem um die Stützhülse 36 zurückgeschlagenen Außenleiter 33 leicht in die Öffnung des Außenleiterkontaktelements 35 einfügen zu können, entspricht der Außendurchmesser des um die Stützhülse 36 zurückgeschlagenen Außenleiters 33 im Wesentlichen dem Innendurchmesser des Au-βenleiterkontaktelement 35. Die Stützhülse 36, die sowohl radial innerhalb wie auch radial außerhalb vom Außenleiter 33 umgeben ist, ermöglicht eine stabilere Fixierung des Au-βenleiterkontaktelement 35 am Außenleiter 33 des Kabels 30 beim Crimp- bzw. Verpressvorgang. Außerdem verhindert die Stützhülse 36 bei einem derartigen Leitercrimp die Beschädigung des elektrischen Innenleiters 31. Insbesondere der radial innerhalb der Stützhülse 36 befindliche Abschnitt des Außenleiters 33 weist aufgrund des Leitercrimps im Bereich der Stützhülse 36 einen geringfügig reduzierten bzw. eingequetschten Außendurchmesser auf, wie aus
In einem dritten Abschnitt des Außenleiterkontaktelements 35, der in
Da im Abschnitt des Hochfrequenzsignalpfades zwischen dem axialen Ende des Außenleiters 33 und dem Verbinder 20 kein Außenleiter 33 des Kabels 30 vorliegt, wird der außenleiterseitige Hochfrequenzsignalpfad durch das Außenleiterkontaktelement 35 gebildet. Ohne Realisierung einer radialen Verengung des Außenleiterkontaktelements 35 würde sich der Abstand zwischen der außenleiterseitigen und der innenleiterseitigen Signalführung und damit die Impedanz in diesem Abschnitt gegenüber den Abschnitten des Hochfrequenzsignalpfades ändern, in denen jeweils ein Außenleiter 33 des Kabels 30 noch vorliegt. Diese Fehlanpassung der Impedanz bewirkt nachteilig Reflexionen von höherfrequenten Signalanteilen und verschlechtert die Übertragungscharakteristik des Hochfrequenzsignalpfades. Durch die radiale Verengung des Außenleiterkontaktelement 35 wird der Innendurchmesser des Außenleiterkontaktelement 35 im Bereich der engsten radialen Verengung auf den Innendurchmesser des Außenleiters 33 des Kabels 30 zurückgeführt. Auf diese Weise ist die Impedanz des Hochfrequenzsignalpfades im Bereich der engsten radialen Verengung des Außenleiterkontaktelement 35 wieder an die Impedanz des Hochfrequenzsignalpfades innerhalb des Kabels 30 und im Bereich des Außenleiterkontaktelement 35 bis zum axialen Ende des Außenleiters 33 angepasst.Since there is no
Wie ebenfalls aus
Der Abstand zwischen dem axialen Ende des Außenleiters 33 und dem Beginn der engsten radialen Verengung, in dem das Außenleiterkontaktelement 35 auf dem Isolatorteil 33 aufliegt, ist typischerweise kleiner als 2 mm, bevorzugt kleiner als 0,5 mm. In diesem Bereich des Hochfrequenzsignalpfades zwischen dem axialen Ende des Außenleiters 33, des Au-βenleiterkontaktelement 35 und dem Isolatorteil 33 bildet sich nach dem Stand der Technik ein Hohlraum aus, der einzig mit Luft gefüllt ist. Innerhalb dieses Bereiches weist der Hochfrequenzsignalpfad in seinem Impedanzverlauf eine Unstetigkeit auf, die die Übertragungscharakteristik insbesondere für höherfrequenten Signalanteile im zwei bzw. dreistelligen Gigahertzbereich verschlechtert.The distance between the axial end of the
Zur Überwindung dieses technischen Nachteiles ist in diesem Bereich, der sich benachbart zum axialen Ende des Außenleiters 33 befindet, ein elektrisch leitfähiges und elastisches Füllelement 37 angeordnet. Durch die Elastizität des Füllelement 37 ist es möglich, dass der sich bildende Hohlraum zwischen dem axialen Ende des Außenleiters 33, dem Außenleiterkontaktelement 35 und dem Isolatorteil 33 weitest möglich mit dem Füllelement 37 ausgefüllt ist. Auf diese Weise ist es auch möglich, dass das elektrisch leitfähige Füllelement 37 den Bereich bis zum Isolatorteil 33 ausfüllt und somit ein im Wesentlichen gleichbleibender außenleiterseitiger Innendurchmesser vom Außenleiter 33 des Kabels 30 im Abschnitt B über das elektrisch leitfähige und elastische Füllelement 37 im Abschnitt D bis zur engsten radialen Verengung des Außenleiterkontaktelements 35 im Abschnitt C verwirklicht ist. Der Hochfrequenzsignalpfad weist somit in diesen Abschnitten im Wesentlichen keine Unstetigkeiten in seinem Impedanzverlauf auf und ermöglicht ein optimiertes Übertragungsverhalten für Hochfrequenzsignale bis in den zwei- und dreistelligen Gigahertzbereich.To overcome this technical disadvantage, an electrically conductive and
Das elektrisch leitfähige und elastische Füllelement 37 umschließt das Isolatorelement 33 und weist somit eine rotationssymmetrische Ausformung, bevorzugt eine ringförmige oder hülsenförmige Ausformung, gemäß
In einer ersten Variante ist das elektrisch leitfähige und elastische Füllelement 37 gemäß
In einer zweiten Variante ist das elektrisch leitfähige und elastische Füllelement 37 gemäß
Das Außenleiterkontaktelement 35 ist gemäß
Der elektrische Innenleiter 31 des Kabels 30 ist am kabelseitigen Ende des als Steckverbinder realisierten Verbinders 20 über eine Crimpverbindung 22 mit dem Innenleiterkontakt 23 des Verbinder 20 elektrisch und mechanisch stabil verbunden. Anstelle einer Crimpverbindung zwischen dem elektrischen Innenleiter 31 des Kabels 30 und dem Innenleiterkontakt 23 des Verbinder 20 ist alternativ auch eine Lötverbindung denkbar. Der Innenleiterkontakt 23 ist über mindestens ein Isolatorteil 24 koaxial zum Außenleiterkontakt 21 innerhalb des Verbinders 20 angeordnet.The electrical
Der als Steckverbinder ausgeführte Verbinder 20 ist in der in
In der in
Die übrigen Elemente der in
An dieser Stelle sei noch einmal erwähnt, dass das Kabel 30 mit dem daran befestigten Außenleiterkontaktelement 35 eine Kabelanordnung bildet. Das Außenleiterkontaktelement 35 muss nicht zwingend in einer Verbinderanordnung 10 mit einem Verbinder 20 verbunden sein. Alternativ kann das Außenleiterkontaktelement 35 an seinem dem Kabel 30 abgewandten Ende mit einem weiteren Kabel, bevorzugt einem Hochfrequenzkabel, fest in einer unlösbaren Verbindung verbunden sein. Schließlich ist auch eine unlösbare Verbindung, d.h. bevorzugt eine Lötverbindung, des Außenleiterkontaktelements 35 mit einem außenleiterseitigen Kontaktanschluss bzw. Masseanschluss auf einer Leiterplatte oder in einem Gehäuse möglich. Der elektrische Innenleiter 31 des Kabels 30 ist hierbei bevorzugt über eine Lötverbindung mit einem innenleiterseitigen Kontaktanschluss auf einer Leiterplatte bzw. in einem Gehäuse verbunden.At this point it should be mentioned again that the
Obwohl die vorliegende Erfindung anhand bevorzugter Ausführungsbeispiele vorstehend vollständig beschrieben wurde, ist sie darauf nicht beschränkt, sondern auf vielfältige Art und Weise modifizierbar.Although the present invention has been fully described above using preferred exemplary embodiments, it is not limited to this but can be modified in a variety of ways.
- 1010
- VerbinderanordnungConnector arrangement
- 2020
- VerbinderInterconnects
- 2121
- AußenleiterkontaktExternal conductor contact
- 2222
- CrimpverbindungCrimp connection
- 2323
- InnenleiterkontaktInner conductor contact
- 2424
- Isolatorteilinsulator part
- 3030
- KabelCable
- 3131
- elektrischer Innenleiterelectrical inner conductor
- 3232
- Isolatorteilinsulator part
- 3333
- AußenleiterExternal conductor
- 3434
- KabelmantelCable jacket
- 3535
- AußenleiterkontaktelementExternal conductor contact element
- 3636
- StützhülseSupport sleeve
- 3737
- FüllelementFilling element
Claims (8)
- A cable arrangement comprising a cable (30), which has an outer conductor (33), an electrical inner conductor (31), an insulator part (32) and a support sleeve (36), an outer conductor contact element (35) and a filling element (37),wherein the insulator part (32) is arranged between the outer conductor (33) and the electrical inner conductor (31),wherein the support sleeve (36) is fixed on the outer conductor (33) and the outer conductor (33) is folded back around the support sleeve (36),wherein the outer conductor contact element (35) is electrically connected to the folded-back outer conductor (33) and has a diameter change,
wherein the filling element (37) concentrically surrounds the insulator part (32),wherein the filling element (37) is arranged in a region between an axial end of the folded-back outer conductor (33) and the diameter change of the outer conductor contact element (35) within the outer conductor contact element (35),wherein the filling element (37) is electrically conductive, characterized in that the filling element (37) is elastic and is configured to reduce an air inclusion in the region between the axial end of the folded-back outer conductor (33) and the diameter change of the outer conductor contact element (35) within the outer conductor contact element (35). - The cable arrangement according to patent claim 1,
characterized in
that the filling element (37) is arranged adjacent to an axial end of the outer conductor (33) within the outer conductor contact element (35). - The cable arrangement according to patent claim 1 or 2,
characterized in
that the diameter change of the outer conductor contact element (35) is a radial narrowing, wherein a region of the radial narrowing abuts against insulator part (32). - The cable arrangement according to one of patent claims 1 to 3, characterized in
that the outer conductor contact element (35) is crimped with the outer conductor (33) in a region of the support sleeve (36) and the outer conductor contact element (35) is designed in particular as a crimp sleeve. - The cable arrangement according to patent claims 1 to 4,
characterized in
that the filling element (37) is made from an electrically conductive elastomer, preferably an elastomer with integrated electrically conductive particles. - The cable arrangement according to patent claims 1 to 4,
characterized in
that the filling element (37) has an electrically conductive wire mesh, which is braided in particular three-dimensionally. - The cable arrangement according to patent claims 1 to 6,
characterized in
that the filling element (37) is shaped in a rotationally symmetrical, preferably annular or sleeve-shaped manner. - A connector arrangement (10) comprising
a connector (20), in particular a plug connector, which has an outer conductor contact (21), and comprising a cable arrangement according to any one of the preceding patent claims, wherein the outer conductor contact element (35) is connected to the outer conductor contact (21).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018127578.1A DE102018127578A1 (en) | 2018-11-06 | 2018-11-06 | CABLE ARRANGEMENT |
PCT/EP2019/074150 WO2020094275A1 (en) | 2018-11-06 | 2019-09-11 | Cable arrangement |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3837741A1 EP3837741A1 (en) | 2021-06-23 |
EP3837741C0 EP3837741C0 (en) | 2023-12-27 |
EP3837741B1 true EP3837741B1 (en) | 2023-12-27 |
Family
ID=67953780
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19768772.6A Active EP3837741B1 (en) | 2018-11-06 | 2019-09-11 | Cable arrangement |
Country Status (5)
Country | Link |
---|---|
US (1) | US11588284B2 (en) |
EP (1) | EP3837741B1 (en) |
CN (1) | CN112997369B (en) |
DE (1) | DE102018127578A1 (en) |
WO (1) | WO2020094275A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114361891B (en) * | 2022-01-29 | 2023-06-16 | 西安雷航电子信息技术有限公司 | Electric connector and circuit structure for radio frequency transmission or electric signal transmission |
CN116526222B (en) * | 2023-06-29 | 2023-09-29 | 杭州海康威视数字技术股份有限公司 | Cable assembly |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3103548A (en) * | 1961-11-16 | 1963-09-10 | Crimped coaxial cable termination | |
US3539709A (en) * | 1968-11-04 | 1970-11-10 | Itt | Sealing crimp ring for coaxial connector |
IL36319A0 (en) * | 1970-04-02 | 1971-05-26 | Bunker Ramo | Sealed coaxial connector |
DE2451853C3 (en) * | 1974-10-31 | 1980-09-11 | Georg Dipl.-Ing. Dr.-Ing. 8152 Feldkirchen-Westerham Spinner | Insulating sleeve arrangement for an RF coaxial line section |
US4755152A (en) * | 1986-11-14 | 1988-07-05 | Tele-Communications, Inc. | End sealing system for an electrical connection |
US5315684A (en) * | 1991-06-12 | 1994-05-24 | John Mezzalingua Assoc. Inc. | Fiber optic cable end connector |
US5207596A (en) * | 1992-03-19 | 1993-05-04 | Tandy Corporation | Solderless coaxial wire connector and method for attachment |
JP3946096B2 (en) * | 2001-09-11 | 2007-07-18 | 株式会社オートネットワーク技術研究所 | Shield connector |
JP2003297493A (en) * | 2002-04-05 | 2003-10-17 | Auto Network Gijutsu Kenkyusho:Kk | Coaxial connector |
US7044785B2 (en) * | 2004-01-16 | 2006-05-16 | Andrew Corporation | Connector and coaxial cable with outer conductor cylindrical section axial compression connection |
US7131868B2 (en) * | 2004-07-16 | 2006-11-07 | John Mezzalingua Associates, Inc. | Compression connector for coaxial cable |
JP5362270B2 (en) * | 2008-07-03 | 2013-12-11 | 矢崎総業株式会社 | Shielded wire, braided terminal processing method of shielded wire, and braided terminal processing apparatus |
US8827744B2 (en) * | 2011-07-29 | 2014-09-09 | Delphi Technologies, Inc. | Wire cable assembly |
DE102011056798B4 (en) | 2011-12-21 | 2013-07-25 | Phoenix Contact Gmbh & Co. Kg | Shielded connector and method of making a shielded connector |
US9160096B2 (en) * | 2013-12-06 | 2015-10-13 | Tyco Electronics Corporation | High speed connector |
DE202015000751U1 (en) * | 2015-01-30 | 2015-03-06 | Rosenberger Hochfrequenztechnik Gmbh & Co. Kg | Connector assembly with compensation crimp |
-
2018
- 2018-11-06 DE DE102018127578.1A patent/DE102018127578A1/en active Pending
-
2019
- 2019-09-11 CN CN201980073010.9A patent/CN112997369B/en active Active
- 2019-09-11 EP EP19768772.6A patent/EP3837741B1/en active Active
- 2019-09-11 WO PCT/EP2019/074150 patent/WO2020094275A1/en unknown
- 2019-09-11 US US17/289,751 patent/US11588284B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP3837741C0 (en) | 2023-12-27 |
US11588284B2 (en) | 2023-02-21 |
WO2020094275A1 (en) | 2020-05-14 |
EP3837741A1 (en) | 2021-06-23 |
DE102018127578A1 (en) | 2020-05-07 |
US20210367385A1 (en) | 2021-11-25 |
CN112997369B (en) | 2023-12-19 |
CN112997369A (en) | 2021-06-18 |
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