EP0123417A2 - Câble-ruban électrique sans entailles - Google Patents

Câble-ruban électrique sans entailles Download PDF

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Publication number
EP0123417A2
EP0123417A2 EP84301866A EP84301866A EP0123417A2 EP 0123417 A2 EP0123417 A2 EP 0123417A2 EP 84301866 A EP84301866 A EP 84301866A EP 84301866 A EP84301866 A EP 84301866A EP 0123417 A2 EP0123417 A2 EP 0123417A2
Authority
EP
European Patent Office
Prior art keywords
conductors
cable
webs
insulation
ribbon cable
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.)
Withdrawn
Application number
EP84301866A
Other languages
German (de)
English (en)
Other versions
EP0123417A3 (fr
Inventor
Timothy R. Ponn
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.)
Molex LLC
Original Assignee
Molex LLC
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23935502&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0123417(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Molex LLC filed Critical Molex LLC
Priority to DE8585101107T priority Critical patent/DE3479264D1/de
Publication of EP0123417A2 publication Critical patent/EP0123417A2/fr
Publication of EP0123417A3 publication Critical patent/EP0123417A3/fr
Withdrawn legal-status Critical Current

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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
    • H01R12/65—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal
    • H01R12/67—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal insulation penetrating terminals
    • H01R12/675—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal insulation penetrating terminals with contacts having at least a slotted plate for penetration of cable insulation, e.g. insulation displacement contacts for round conductor flat cables
    • 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
    • H01B7/08—Flat or ribbon cables
    • H01B7/0823—Parallel wires, incorporated in a flat insulating profile
    • 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
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/2445—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives

Definitions

  • This invention relates to flat electrical ribbon cable construction and, more particularly, to insulated ribbon cable having the capability of being terminated to an electrical connector assembly by displacement of the insulation surrounding the cable conductors.
  • Electrical ribbon cable has gained wide acceptance in a variety of applications involving the interconnection wiring of electrical and electronic assemblies. It is particularly suitable for low voltage applications such as in the interconnection of telecommunications or computer subassemblies where a plurality of discrete electrical signals are required to be transmitted from one subassembly to another.
  • the interconnection ribbon cable is terminated at each end with electrical connectors having the capability of being mounted on printed circuit boards by connection to a plurality of spaced wire pins which have been wave-soldered to the board circuitry, for example.
  • ribbon cable is manufactured with standard center spacing of the cable conductors.
  • the conductor center spacings which have been adopted are those spacings which have been found preferable for standardized pin separation in the design of printed circuit board circuitry layout. These spacings are typically on the order of several conductor- diameters in magnitude. Accordingly, it is common practice to manufacture ribbon cable by an extrusion process which coats the conductors with a relatively uniform layer of insulation and joints adjacent pairs of conductors in spaced-apart relationship with a web of extruded insulation. The webs need only have a thickness sufficient to maintain the individual conductors in uniform separation and assure the integrity of the cable as a unitary structure during handling and use.
  • One method of terminating interconnection wiring that has gained wide acceptance in the above-mentioned applications because of its efficiency in assembly is mass termination by insulation displacement.
  • the conductors are not stripped of their covering insulation prior to termination, whether they are discrete insulated wires or in ribbon cable form. Instead, the insulation is severed and displaced by the respective terminal to which the conductor is electrically connected.
  • Connectors having the capability of insulation displacement termination are disclosed, for example, in US-A-4,217,022 and typically comprise a row of stamped, slotted metal terminals with V-shaped ends for receiving and making electrical contact with the respective conductors of the interconnection wiring or cable.
  • ribbon cable is used instead of discrete insulated wire
  • Preparing the ribbon cable by removing insulation web portions is desirable for the reason that it permits the cable to be terminated as if it were composed of a plurality of discrete wires. More specifically, by removal of the webs in the region of the connector termination, less force is required to press the cable conductors into their respective terminals and a more reliable connection between the cable conductors and terminals can be assured.
  • the cables are not prepared, there is a tendency for overpacking of the terminal interface area with excess insulation causing withdrawal forces to be imposed on the conductors as a result of the latent resiliency of the insulation. This condition can, with time, result in inadequate electrical conductivity at the terminal-to-conductor interface of an operative connector.
  • the step of preparing the ribbon cable involves the use of specialized equipment and added investment of time. Additionally, where the cable user is unequipped to prepare the cable but requires multiple connector terminations within a single cable span, the cable must be specially prepared by the cable manufacturer, resulting in increased cost to the cable user.
  • the present invention provides a generally flat electrical ribbon cable including a plurality of parallel, spaced-apart electrical conductors, each of said conductors being embedded in a continuous generally planar layer of insulation having a plurality of webs integrally formed between said conductors, said webs each having groove means running lengthwise of said conductors characterized by said groove means including at least one groove being formed proximate and adjacent to one of said conductors.
  • the ribbon cable 10 consists of a plurality of electrical conductors 11 enveloped in a coating of insulation 12.
  • The-conductors 11 are arranged in parallel side-by-side relationship, uniformly separated from each other by a standard dimension which is maintained by connecting webs of insulation 13.
  • Formed in the webs of insulation 13 are grooves 14 running lengthwise of the conductors 11 and positioned equi-distantly between adjacent pairs of conductors 11.
  • the cable 10 has been prepared by removing portions 15 of its webs of insulation 13 at the locations where connectors are intended to be installed.
  • Ribbon cable 20 manufactured in accordance with the present invention and comprising electrical conductors 21 enveloped in a coating of insulation 22.
  • Ribbon cable 20 may be made by an extrusion process whereby continuous lengths of conductors 21 are conveyed through a die which forms the insulation layer 22 in any desired cross- sectional configuration.
  • the conductors 21 are arranged in parallel side-by-side relationship, uniformly separated by webs of insulation 23 which have a thickness no more than that required to maintain the cable 20 as a unitary structure in handling and in use.
  • Formed in the webs of insulation 23 are grooves 24 positioned in close proximity to one of the pair of conductors 21 between which each web 23 is formed. The grooves 24 permit manual or machine separation of the cable 20 into preselected conductor groupings, and additionally, they facilitate termination of the cable 20 without preparation, in a manner which will, hereinafter, be described in greater detail.
  • the connector 30 includes a rigid dielectric housing 31 into which are fitted a plurality of metal insulation displacement type terminals 32. Each terminal 32 is formed with a slotted V-shaped edge portion 33 adapted to receive an individual conductor 21. Molded integrally with the housing 31 and extending to a position immediately above the terminals 32 are a plurality of strain reliefs 35 configured with angled surfaces 36 which serve to guide the individual conductors 21 into position over their respective mating terminals 32. The strain reliefs 35 also serve to retain the conductors 21, within the slotted terminals 32 after termination. Because of their somewhat pointed configuration, the strain reliefs 35 initiate the severing of the ribbon cable webs 23 upon moving the cable towards the connector 30 in order to effect termination.
  • a ribbon cable designated generally by the reference numeral 40
  • a ribbon cable designated generally by the reference numeral 40
  • the webs 43 sever completely away from the conductors 41 in a flap- like manner for a suitable distance from the cable end or along an intermediate portion (not shown) of the cable 40.
  • the cable conductors 41 become, in effect, the equivalent of discrete insulated wires, and they can be terminated with relatively uniform severing of their insulation covering by the edge portions 33 of the terminals 32.
  • the cable 20 severs at each of the grooves 24 formed between adjacent pairs of conductors 21 as a result of piercing action imposed on the webs 23 by the pointed strain reliefs 35 of the connector housing 31.
  • the cable conductors 21 are further forced into the terminals 32 of the connector 30, they rotate about their longitudinal axes due to the pivotal interaction of the webs 23 with the surfaces 33 of the terminals 32 and of the surfaces 36 of the strain reliefs 35.
  • the webs 23 are caused to trail the conductors 21 into the terminals 32 as final termination is achieved.
  • the webs 23 do not interfere with the displacement of the insulation layer 22 adjacent the conductors 21 by the terminal edge surfaces 33. Additionally, there is no overpacking of the opposed terminal edges 33 with web insulation, thus avoiding the tendency for excess web insulation 23 to withdraw the conductors 21 from seated relationship with the terminals 32 as a result of the latent resiliency of the insulation 22.
  • the cable 40 severs at each of the grooves 44 formed at the juncture of the webs 43 with the conductors 41 as a result of piercing action imposed by the strain reliefs 35. After severance, the webs 43 completely dissociate from between the conductors 41 and will not enter the region of the opposed edges 33 of the connector terminals 32.
  • the grooves 24 and 44 are so configured and located as to permit severing of the webs 23 and 43 respectively, without exposing the conductors 21 and 41 to the environment or reducing the dielectric properties of the cable 20, 40. Also, the grooves are configured and positioned such that the conductors 21 and 41 have a substantially uniform thickness of insulation 22 and 42, respectively, after severance of the webs. In this manner, the cable 20 and 40 may be separated along its entire length to provide a cable of lesser width without reducing the dielectric properties of the cable as a result of excessive thinness of the insulative covering 22, 42 along the edges of the resultant cable. Additionally, the cables 20 and 40 do not require preparation, in order to effect termination at any position along a cable span. Accordingly, the cable user is not limited to placement of connectors only at cable sections which have been prepared by the cable manufacturer.

Landscapes

  • Multi-Conductor Connections (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Insulated Conductors (AREA)
EP84301866A 1983-04-21 1984-03-20 Câble-ruban électrique sans entailles Withdrawn EP0123417A3 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8585101107T DE3479264D1 (en) 1983-04-21 1984-03-20 Method of making electrical ribbon cable harness

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US48737783A 1983-04-21 1983-04-21
US487377 1983-04-21

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP85101107.2 Division-Into 1984-03-20
EP19850101107 Division EP0154800B2 (fr) 1983-04-21 1984-03-20 Procédé de fabrication de harnais de câble ruban électrique

Publications (2)

Publication Number Publication Date
EP0123417A2 true EP0123417A2 (fr) 1984-10-31
EP0123417A3 EP0123417A3 (fr) 1986-06-04

Family

ID=23935502

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19850101107 Expired - Lifetime EP0154800B2 (fr) 1983-04-21 1984-03-20 Procédé de fabrication de harnais de câble ruban électrique
EP84301866A Withdrawn EP0123417A3 (fr) 1983-04-21 1984-03-20 Câble-ruban électrique sans entailles

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19850101107 Expired - Lifetime EP0154800B2 (fr) 1983-04-21 1984-03-20 Procédé de fabrication de harnais de câble ruban électrique

Country Status (3)

Country Link
EP (2) EP0154800B2 (fr)
JP (2) JPS59201313A (fr)
CA (1) CA1212157A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4644099A (en) * 1985-04-11 1987-02-17 Allied Corporation Undercarpet cable
US5296648A (en) * 1992-04-27 1994-03-22 Belden Wire & Cable Company Flat cable
US6734364B2 (en) 2001-02-23 2004-05-11 Commscope Properties Llc Connecting web for cable applications
WO2012021931A1 (fr) * 2010-08-18 2012-02-23 David Andrew Mckenzie-Mcharg Dispositif de retenue de câbles

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0197309A (ja) * 1987-10-09 1989-04-14 Junkosha Co Ltd フラットケーブル
JPH0740300Y2 (ja) * 1989-05-19 1995-09-13 日本エー・エム・ピー株式会社 圧接コネクタ
DE102009044809A1 (de) * 2009-12-08 2011-06-09 Bpw Bergische Achsen Kg Elektrische Kabelanordnung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB625051A (en) * 1946-09-10 1949-06-21 British Insulated Callenders Improvements in insulated electric wires
CH541878A (fr) * 1971-06-11 1973-09-15 Sodeco Compteurs De Geneve Dispositif de connexion rapide d'un câble plat sur un circuit électrique
JPS517667B2 (fr) * 1971-10-18 1976-03-10
JPS5856234B2 (ja) * 1976-07-23 1983-12-14 日本航空電子工業株式会社 リボンケ−ブルとコネクタを接続する方法
IT1081631B (it) * 1976-08-13 1985-05-21 Amp Inc Connettore elettrico
JPS5844685A (ja) * 1981-09-09 1983-03-15 昭和電線電纜株式会社 プラスチツク被覆電線の接続方法
JPS5942785A (ja) * 1982-08-31 1984-03-09 日本圧着端子製造株式会社 電気コネクタ

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4644099A (en) * 1985-04-11 1987-02-17 Allied Corporation Undercarpet cable
US5296648A (en) * 1992-04-27 1994-03-22 Belden Wire & Cable Company Flat cable
US6734364B2 (en) 2001-02-23 2004-05-11 Commscope Properties Llc Connecting web for cable applications
WO2012021931A1 (fr) * 2010-08-18 2012-02-23 David Andrew Mckenzie-Mcharg Dispositif de retenue de câbles

Also Published As

Publication number Publication date
EP0123417A3 (fr) 1986-06-04
EP0154800B1 (fr) 1989-08-02
EP0154800A3 (en) 1986-06-04
CA1212157A (fr) 1986-09-30
EP0154800B2 (fr) 1994-01-19
JPS60241686A (ja) 1985-11-30
EP0154800A2 (fr) 1985-09-18
JPS59201313A (ja) 1984-11-14
JPH0213434B2 (fr) 1990-04-04

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Effective date: 19861205

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Inventor name: PONN, TIMOTHY R.