EP2053699A1 - Câble de signalisation et élément de contact pour un câble de signalisation - Google Patents

Câble de signalisation et élément de contact pour un câble de signalisation Download PDF

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Publication number
EP2053699A1
EP2053699A1 EP08018719A EP08018719A EP2053699A1 EP 2053699 A1 EP2053699 A1 EP 2053699A1 EP 08018719 A EP08018719 A EP 08018719A EP 08018719 A EP08018719 A EP 08018719A EP 2053699 A1 EP2053699 A1 EP 2053699A1
Authority
EP
European Patent Office
Prior art keywords
strain relief
contact
signal cable
conductor wires
cable according
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.)
Granted
Application number
EP08018719A
Other languages
German (de)
English (en)
Other versions
EP2053699B1 (fr
Inventor
Jürgen Engbring
Michaela Gau
Christof Rath
Volker Albert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leoni Bordnetz Systeme GmbH
Original Assignee
Leoni Bordnetz Systeme GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Leoni Bordnetz Systeme GmbH filed Critical Leoni Bordnetz Systeme GmbH
Publication of EP2053699A1 publication Critical patent/EP2053699A1/fr
Application granted granted Critical
Publication of EP2053699B1 publication Critical patent/EP2053699B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/592—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures connections to contact elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/77—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/771—Details
    • H01R12/774—Retainers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/002—Pair constructions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring

Definitions

  • the invention relates to a signal cable with a multi-core, in particular two-wire signal line as well as with a contact element attached to the end of the signal line as well as such a contact element for the signal cable.
  • Signal lines are used, for example in the automotive sector in the context of a motor vehicle electrical system as so-called data or bus lines, are transmitted via the data signals.
  • a well-known bus system is, for example, the so-called CAN bus or the so-called FLEXRAY bus. In such signal or data lines only very small electrical currents are regularly transmitted.
  • prefabricated cables can be provided in which contact elements are already arranged on the lines.
  • the invention has for its object to provide an improved signal cable in particular for a motor vehicle.
  • the object is achieved according to the invention by a signal cable having the features of claim 1.
  • the signal cable comprises a multi-core, in particular two-wire signal line and a contact element attached thereto.
  • the signal line comprises two conductor wires, which are connected to one another via a common cable sheath in the manner of a ridge line and are also spaced apart from each other via the cable sheath.
  • a strain relief wire is provided separately from the conductor wires.
  • the signal line is designed in particular as a so-called raster line, in which the individual conductor wires arranged side by side and in particular parallel to each other and are held by the cable jacket to each other at the same distance.
  • the advantage is additionally achieved that the actual contacting process of the conductor wires via the strain relief wire is not hindered.
  • the contacting of the conductor wires is identical to conventional multi-core signal cables. The contact is not disturbed by a strain relief, which runs for example in a stranded conductor.
  • Another advantage of the separate arrangement of the strain relief wire from the conductor wires is the fact that interactions between the conductor wires and the strain relief wire are excluded. For example, there are no problems due to galvanic contact between the conductor wire and a metallic strain relief wire.
  • the signal cable is formed as a pre-assembled cable, wherein at least at one and preferably at both ends of the line contact elements are struck.
  • the contact element is specially adapted to the signal line and has separate connection options for the conductor wires on the one hand and the strain relief wire on the other. In the contact element of the cable sheath between the conductor wires is separated and the conductor wires are each individually guided to the respective terminal contact.
  • the contact element is designed as a plug-in element and is suitable for combination with commercially available, standardized plugs, so that the signal line can be connected by a simple plug connection with commercially available plugs, for example, to a vehicle electrical system.
  • the contact element expediently has a multi-part housing, which comprises a strain relief part, in which a fastening element and a receptacle for a contacting region of the connection contacts are formed.
  • a plug housing is provided at a front free end of the contact element.
  • the connector housing receives a front free end of the connection contacts.
  • the plug housing is in this case designed to make contact with a standard, commercial and thus standard mating contact element.
  • the multi-part design of the housing of the contact element quasi an adapter solution is realized, so that the specially adapted signal line with the strain relief is easily compatible with conventional systems.
  • the Switzerlandentlastungsteil quasi forms an adapter part for connecting the signal line.
  • the two housing parts are preferably connected to each other in terms of ease of assembly by a simple connector, in particular without further fastening means, for example, locked.
  • the terminal contact extends from a rear contact area in Switzerlandentlastungsteil to a front weakened disorderen plug contact.
  • the contacting with the signal line and the plug contact is used to form a plug-in contact connection with another plug-in element.
  • the two functional zones of the terminal contact are therefore distributed to the two housing parts, which can therefore be designed specifically for the respective functional zones.
  • connection contact is preferably latched to the contact housing, in particular to the connector housing in the region of the plug contact.
  • bent latching tongue of the terminal contacts a recess or an opening in the connector housing.
  • the Buchentlastungsteil is separated along a dividing plane, so even has a plurality of housing parts. This provides easy accessibility for contacting the signal line with the terminal contact or for fastening the strain relief.
  • the strain relief is expediently clamped by joining the preferably two parts.
  • the fastening element is designed, for example, as a two-part clamping element, for example in the manner of an insulation displacement element. The clamping takes place here when joining the two parts of the strain relief.
  • the fastening element is also formed in two parts in this embodiment, wherein the one part is arranged on the lower housing part of the Werentlastungsteils and the other on the upper housing part of the Buchentlastungsteils.
  • the strain relief wire forms a neutral fiber of the signal line, ie seen in cross-section, the strain relief is arranged in the center of symmetry of the signal line, so that the strain relief wire remains unloaded at a bend in the signal line.
  • the cable sheath has a connecting web between the conductor wires and the strain relief wire is arranged in this connecting web, in particular centrally between the conductor wires. The strain relief is thus equally far away from the two adjacent conductor wires. In a two-wire signal line, the strain relief wire runs in the middle of the line.
  • the design of the signal line can be tailored to the requirements of the line impedance.
  • the strain relief wire additionally assumes an electrical function. For example, by selecting the material and / or the cross-sectional geometry of the strain relief wire on the line impedance influence.
  • a non-conductive plastic fiber in particular an aramid fiber or a fiber bundle is used as a strain relief.
  • the strain relief wire is made of an electrically conductive material and consists in particular of a metal and is preferably formed as a single-core metal wire.
  • the strain relief core can assume a shielding function and thus make a positive contribution to EMC stability (electromagnetic compatibility). This is of particular importance when using the so-called FLEXRAY bus, since high transmission frequencies are provided in this bus architecture.
  • the strain relief for example, consists of a particularly tensile material, such as steel.
  • a metallic design can also be provided a non-conductive design.
  • aramid fibers are used.
  • the signal line is preferably twisted, i. the signal line extends in the longitudinal direction of the cable approximately along a helical line.
  • the lead wires are preferably further formed as so-called stranded conductors, and therefore consist of a plurality of individual individual wires stranded together.
  • the cable cores expediently have a cross section of ⁇ 0.5 mm 2 , preferably ⁇ 0.35 mm 2 . This cross section is completely sufficient for the transmission of the signals.
  • strain relief wires are conveniently introduced by co-extrusion with the cable sheath in these. As a result, a simple and fast production is possible.
  • the signal line is formed asymmetrically and has an odd number of conductor wires, for example, three conductor wires.
  • the two outer conductor wires are at the same electrical potential during operation.
  • Such a signal line is preferably twisted, so that these two outer, lying at the same potential conductor wires act in the manner of an electrical shield.
  • an additional conductor enclosure is provided if required in order to specify a defined outer contour.
  • Signal line 2 shown is an unshielded, two-wire line, which is designed as a ridge line.
  • the signal line 2 serves for the transmission of data and information signals, in particular in a motor vehicle electrical system.
  • the signal line 2 is designed to transmit only the smallest currents in the milli-ampere range.
  • the signal line 2 for this purpose comprises two conductor wires 4, which are each formed as strands. That is, each conductor core 4 consists of a plurality of individual stranded individual wires 6.
  • the two conductor wires 4 with a circular cross-section are surrounded by a common cable sheath 8 and connected to each other via this. Under cable sheath 8 is understood here the conductor wires 4 immediately surrounding insulation.
  • the conductor wires 4 are hereby from each other spaced by a defined pitch. The distance is preferably below the usual pitch of 2.54 mm.
  • the cable sheath 8 has a connecting web 10.
  • a strain relief wire 12 is embedded in the cable sheath 8.
  • the signal line 2 has a total round, angular or elliptical cross section, wherein the cable sheath 8 surrounds both conductor wires 4 in a compact manner and the strain relief wire 12 preferably extends between the conductor wires 4.
  • the strain relief wire 12 is preferably made of a non-conductive material. In this case, it preferably consists of a large number of individual cores, which are combined to form a bundle. Aramid fibers which have a high tensile strength are particularly suitable as tensile, non-conductive fibers.
  • the strain relief wire 12 is made of a metal, such as steel, with high tensile strength. In this case, the strain relief wire 12 is formed in particular as a single-wire pull wire.
  • the strain relief wire 12 assumes a mechanical support function for the signal line 2, so that the line wires 4 are released from mechanical stress. Thereby, the conductor wires 4 can be formed with a reduced cross-sectional area as compared with conventional signal lines. In fact, very small cross-sectional areas suffice for the low currents to be transferred. So far, however, these could not be used, since then the mechanical stability of the signal line would have been too low overall. By introducing the strain relief wire 12, the mechanical functions are now decoupled from the electrical functions. Due to the reduced compared to previous signal lines 2 cross section of the conductor wires 4 results in a significant overall material savings for the conductor wires 4 of up to 50%.
  • the strain relief wire 12 can also take in the embodiment as an electrically conductive wire also a complementary electrical function. In fact, it may in particular also be classified under Art a shield or grounding are used. In this context, it is of particular importance that the strain relief wire 12 is not in contact with the conductor wires 4, but at a distance from these is embedded in the cable sheath 8.
  • the signal line 2 twisted in the manner of a twisted pair cable. Due to the design as a ridge web cable with the strain relief wire 12 in particular as a neutral fiber over the entire length of the signal line 2, an equal distance of the conductor wires 4 to each other and the center of symmetry (strain relief wire 12) guaranteed. This is advantageous for the electrical properties of the signal line 2.
  • the procedure for introducing the strain relief wire 12 is such that when the cable sheath 8 is formed, the strain relief wire 12 is embedded in the cable sheath 8 by coextrusion.
  • the conductor wires 4 and the strain relief wire 12 are coated in a coextrusion process with the cable sheath 8.
  • the conductor wires 4 therefore run strictly parallel to one another and to the strain relief core 12 over the entire length of the signal line 2.
  • the conductor cores 4 always have exactly the same distance to the strain relief core 12 over the entire length of the signal line 2.
  • a specially designed contact element is attached to the signal line 2 at the end, which in the exemplary embodiment is designed in the manner of a plug-in contact element 14.
  • An embodiment of the signal cable with the plug contact element 14 is in the Fig. 2 and 3a to 3c.
  • a so-called socket contact is attached as a terminal contact 16 by crimping.
  • the signal line 2 is first inserted into a contact housing 18 of the plug contact element.
  • the conductor wires 4 are stripped end and contacted via a crimp 20.
  • the terminal contact 16 generally has a rear contacting area and a front terminal area.
  • the rear contacting region has the crimp contact 20 and the connection region has a plug contact designed as a socket contact 21.
  • the contact can alternatively be made to the crimp contact 20 with screw, clamp, welding, soldering or other contact connections.
  • the contact housing 18 may correspond to different protection requirements and, for example, be sealed against moisture.
  • the terminal contact 16 is formed as a stamped sheet metal bent part and has at its front portion a bent latching tongue which engages in an opening in the contact housing 18.
  • the contact housing 18 has a strain relief part 22 and a front side arranged, designed as a separate component plug housing 24.
  • the plug housing 24 which adjoins the strain relief part 22 in the longitudinal direction, receives the socket contacts 21.
  • the terminal contact with its rear crimp contact 20 extends over both housing parts 22,24.
  • the plug housing 24 with the socket contacts 21 inserted therein is compatible with conventional contact plugs, ie the socket contacts 21 are arranged at a defined distance from each other and have standardized plug-in openings. Alternatively to the embodiment as a socket contacts 21 and plug contacts can be posted. Overall, this special measure ensures that the specially designed signal line 2 with the strain relief core 12 embedded therein can be easily connected to conventional vehicle systems via the plug contact element 14.
  • the strain relief part 22 is separated along a horizontal dividing plane 28 into an upper housing shell 30a and into a lower housing shell 30b.
  • the two conductor wires 4 are divided in a y-shape and expanded to a contact pitch.
  • the strain relief wire 12 is continued centrally and connected in a fastener 26 by clamping with the strain relief part 22.
  • the strain relief wire is additionally clamped by two clamping punch 32. These are arranged on opposite inner sides of the two housing shells 30a, 30b of the strain relief part 22 (cf. Fig. 3b, 3c ) Their height is such that when assembled housing halves the strain relief wire 12 is clamped.
  • the Switzerland choirentlastungsteil 22 is inserted end with its frontal housing wall in the subsequent connector housing 24 to a stop 34.
  • the procedure is such that first the signal line 2 is connected to the connection contacts 16 via the crimp contacts 20. Subsequently, the thus prefabricated signal line is inserted with the y-shaped conductor wires 4 in the lower housing shell 30b and, if appropriate, the strain relief wire 12 is fastened in the fastening element 32. The prepared part is then inserted from behind into the connector housing 24 to the stop 34.
  • the upper housing shell 30a can be placed in the connector housing 24 before or even after insertion.
  • connection to the connector housing 24 can also be done later in time and place. Thus it is possible to pre-fabricate the signal line with the strain relief part 22 in order to set up the plug housing only during the final assembly.
  • the electrical properties are also partially improved. For example, better compliance with required impedance values is possible. Also can be achieved with this signal line 2 compared to conventional signal lines improved EMC properties due to the more compact design.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Insulated Conductors (AREA)
EP20080018719 2007-10-27 2008-10-25 Câble de signalisation et élément de contact pour un câble de signalisation Expired - Fee Related EP2053699B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710051462 DE102007051462A1 (de) 2007-10-27 2007-10-27 Mehradrige Signalleitung sowie Kontaktelement für eine solche Signalleitung

Publications (2)

Publication Number Publication Date
EP2053699A1 true EP2053699A1 (fr) 2009-04-29
EP2053699B1 EP2053699B1 (fr) 2010-09-15

Family

ID=40433685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080018719 Expired - Fee Related EP2053699B1 (fr) 2007-10-27 2008-10-25 Câble de signalisation et élément de contact pour un câble de signalisation

Country Status (2)

Country Link
EP (1) EP2053699B1 (fr)
DE (2) DE102007051462A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015003548A1 (de) 2015-03-19 2015-08-27 Daimler Ag Verfahren zum Herstellen einer Stegleitung

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US5180890A (en) 1991-03-03 1993-01-19 Independent Cable, Inc. Communications transmission cable
WO1998035415A1 (fr) 1997-02-07 1998-08-13 N.V. Raychem S.A. Serre-cable
EP1122566A2 (fr) * 2000-02-04 2001-08-08 Panduit Corporation Système de connexion pour fibre optique
JP2006139209A (ja) 2004-11-15 2006-06-01 Fuji Photo Film Co Ltd 光ファイバコード及び光ファイバコードと光コネクタとの接続方法

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Publication number Priority date Publication date Assignee Title
US4722081A (en) * 1984-07-11 1988-01-26 Matsushita Electric Industrial Co., Ltd. Analog optical transmission system
US5180890A (en) 1991-03-03 1993-01-19 Independent Cable, Inc. Communications transmission cable
WO1998035415A1 (fr) 1997-02-07 1998-08-13 N.V. Raychem S.A. Serre-cable
EP1122566A2 (fr) * 2000-02-04 2001-08-08 Panduit Corporation Système de connexion pour fibre optique
JP2006139209A (ja) 2004-11-15 2006-06-01 Fuji Photo Film Co Ltd 光ファイバコード及び光ファイバコードと光コネクタとの接続方法

Also Published As

Publication number Publication date
EP2053699B1 (fr) 2010-09-15
DE102007051462A1 (de) 2009-04-30
DE502008001305D1 (de) 2010-10-28

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