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EP0514113B1 - Cordage terminé par une prise modulaire avec engagement borne-conducteur amélioré - Google Patents

Cordage terminé par une prise modulaire avec engagement borne-conducteur amélioré Download PDF

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Publication number
EP0514113B1
EP0514113B1 EP92304237A EP92304237A EP0514113B1 EP 0514113 B1 EP0514113 B1 EP 0514113B1 EP 92304237 A EP92304237 A EP 92304237A EP 92304237 A EP92304237 A EP 92304237A EP 0514113 B1 EP0514113 B1 EP 0514113B1
Authority
EP
European Patent Office
Prior art keywords
terminal
ribbon
tangs
cordage
ribbons
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.)
Expired - Lifetime
Application number
EP92304237A
Other languages
German (de)
English (en)
Other versions
EP0514113A3 (en
EP0514113A2 (fr
Inventor
Larry Edward Fortner
Paul Rudolph Gustin
Harold Eugene Johnson
George Raymond Maul
David Louis Reed
George Willis Reichard, Jr.
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.)
AT&T Corp
Original Assignee
AT&T Corp
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Filing date
Publication date
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Publication of EP0514113A2 publication Critical patent/EP0514113A2/fr
Publication of EP0514113A3 publication Critical patent/EP0514113A3/en
Application granted granted Critical
Publication of EP0514113B1 publication Critical patent/EP0514113B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • H01R4/2404—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation
    • 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
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/16—Connectors or connections adapted for particular applications for telephony

Definitions

  • This invention relates to cordage terminated by a modular plug having enhanced terminal to conductor engagement.
  • a conductor of a telephone cord which connects a telephone handset to a telephone base and in some instances a telephone base to a wall terminal generally comprises a polymeric core having a plurality of tinsel ribbons, i.e., typically three or four , wrapped helically thereabout.
  • the tinsel conductors are covered with a suitable insulative covering such as hat, for example, which is disclosed and claimed in U. S. Patent 4,090,763 and in U.S. patent 4,705,823.
  • each insulated conductor generally includes an elongated metallic member comprising a plurality of metallic wire-like members stranded together and insulated with a plastic material.
  • a plurality of the individually insulated conductors are jacketed with a plasticized polyvinyl chloride (PVC) composition of matter.
  • PVC polyvinyl chloride
  • each end of a line or handset cord is terminated with a miniature plug, which is termed modular, to facilitate attachment to jacks in telephone instruments and in wall outlets.
  • An end of a cord is inserted into one end of a modular plug and secured therein.
  • the modular plug is adapted to be inserted into a cavity of a jack of a telephone, for example, or into a wall outlet to establish electrical connections between cord conductors which are terminated within the plug and contact elements in the form of wires in the jack.
  • Modular plugs are disclosed, for example, in U. S. Patent Nos. 3,699,498 and 4,148,539.
  • a modular plug typically includes a plastic housing having conductor-receiving troughs which communicate with a cord-receiving opening at one end of the plug.
  • An opposite end of the plug is referred to as a termination or free end.
  • Terminal-receiving slots extend between the troughs and an outwardly facing inner surface of a well of the housing from which a plurality of partitions extend to an outer surface of the housing. Each slot opens to the inner surface of the well between two partitions or between a partition and a sidewall of the housing.
  • the jacket is removed from an end portion of a length of cordage. That end portion is inserted into the cord-receiving end of the plug with end portions of the conductors being received in the plug troughs. Then the end portion of the length of cordage is secured within the plug and the plug is positioned in a nest to receive a plurality of terminals. Plated strips of terminals are fed into insertion apparatus such as is shown, for example, in U. S. Patent 3,839,787. Terminals are severed from the strips and seated within the terminal-receiving slots to engage electrically the cord conductors in the troughs.
  • cord conductors are inserted into an end of a plug housing having terminals preinserted thereinto. Then the terminals are moved farther into the housing, penetrating the conductors and becoming seated in the housing.
  • One prior terminal is described in abovementioned U. S. Patent 4,148,539. It is made from sheet stock of an electrically conductive material such as, for example, a Phosphor-bronze alloy.
  • the terminal has flat major faces spaced apart by an edge surface which includes an internal contact portion comprising protruding tangs. When the terminals are seated fully within the plug housing, the tangs pierce the insulation of and engage electrically the conductors of the cord which has been inserted into the one end of the plug.
  • Each terminal also includes an external contact portion being exposed to an outer surface of the housing and having an outer surface which is spaced slightly from outer edge surfaces of the partitions which are coplanar with the outer surface of the housing.
  • Each external contact portion includes an edge surface having a crown of a predetermined radius termed at each end thereof. The terminal is symmetrical with respect to an axis which extends through its center of gravity and which is normal to the edge surface of the external contact portion. That crown which is adjacent to the termination end of the plug housing functions to engage an aligned wire-like contact element of the jack into which the plug is inserted to complete an electrical connection from a conductor of the cord to the jack.
  • Each terminal also has barbs formed on opposed end surfaces thereof.
  • the barbs support the terminals within the terminal-receiving slots to space the external contact portions above the inner surface of the well with the barbs being embedded in end walls which define the slots to prevent unintended movement of the terminals while each of the terminals is in a partially inserted position or when each is in a fully seated position.
  • each terminal comprises a body portion which includes a reference surface that extends from one end of the terminal toward the other end.
  • Each terminal also includes a fin-like portion having a curved leading edge surface which is adjacent to the termination end of the plug housing and a linear trailing edge surface that is normal to the reference edge surface.
  • the external contact portion protrudes from the body portion and is disposed asymnetrically between the ends of the body portion adjacent to the other end of the terminal.
  • Substantially the entire surface area of the hereinbefore-described terminal is covered with a base layer or layers of metallic material which provides corrosion resistance, smooths the terminal metal, and prevents diffusion of the terminal metal into a subsequently deposited layer of metallic material.
  • the base layer is covered with a relatively thin layer of gold which is called a flash and which enhances a connection to a cord conductor.
  • selected surface areas of the external contact portion are covered with an additional layer of metallic material such as gold to enhance conductivity of the connection with a contact wire of the jack.
  • a terminal such as one of those described hereinabove, is inserted into each slot of the housing such that an external contact portion of each is oriented toward the outer surface of the housing to which the partitions extend.
  • the internal contact portion of the terminal establishes an electrical connection with a conductor of the cord that has been inserted into the housing prior to the insertion of the terminals.
  • the terminals are preinserted prior to insertion of the cord conductors.
  • the external contact portion of each terminal extends beyond the slot in which the terminal is seated and is adapted to make electrical engagement with a wire-like contact element of a jack when the plug is inserted into the cavity of the jack.
  • U.S.-A-4 184 539 describes a modular plug for terminating a multiconductor cord.
  • the plug has a plasic housing with conductor receiving cells. Terminal receiving slots extend between a chamber in the housing and the exterior of the housing. This document forms the basis for the preamble of claims 1 and 8.
  • a modular plug which has enhanced terminal to conductor engagement as set out in Claim 1.
  • Modular cord systems typically include cords 20-20 (see FIG. 1), each comprising a length of cordage 21 terminated at each end by a modular plug 23.
  • the phrase "modular cord system" is intended to describe a system which includes the use of devices mounted in equipment and assembled to cord ends to facilitate customer connection of the cords to the equipment.
  • the cordage 21 includes a plurality of individually insulated flexible conductors 22-22 (see FIG. 2).
  • the cords are terminated with modular plugs 23-23 of the type shown, for example, in priorly mentioned U. S. Patent No. 4,148,539.
  • the flexible conductor 22 may include a filamentary core 25 (see FIGS. 1 and 2) having a plurality of tinsel ribbons 27-27 wrapped helically thereabout and enclosed with a suitable insulative covering 28 such as that, for example, disclosed and claimed in hereinbefore identified U. S. Patent Nos. 4,090,763 and 4,705,823.
  • a plurality of wire-like metallic conductors 29-29 are stranded together and insulated with a plastic material 31 to provide an insulated conductor 32.
  • the insulated conductors 22-22 may be disposed side-by-side in a planar array and are enclosed in a common jacket 34 (see FIG. 1) made of a suitable plastic material.
  • the final cord configuration has a cross-section with parallel sides and semi-circular end and is referred to as a flat cord.
  • the cord 20 may be connected to a telephone hand set, to a telephone base, or to a wall terminal by inserting a plug 23 into a jack (not shown).
  • the jack is typically that shown in U. S. Patent No. 3,990,764.
  • the jack includes a cavity and a plurality of spaced-apart wire-like contact elements which protrude angularly into the cavity of the jack in which is received the modular plug.
  • the modular plug 23 constructed in accordance with the principles of this invention includes a housing 41 (see also FIG. 4), which is made from a dielectric material, and a plurality of terminals 42-42.
  • the terminals 42-42 are destined to connect electrically the conductors 22-22 of the cord which are housed within the plug 23 and electrical components of telephone apparatus such as, for example, the wire-like contact elements of the jack.
  • the terminals 42-42 are mounted within the housing 41 to be engagable by the contact wires in the jack.
  • the plug housing 41 is a unipartite rigid housing (see FIGS. 1, 2 and 4) made from a plastic material such as polycarbonate.
  • the housing 41 includes a so-called free or termination end 46 which is closed. Further, the housing 41 includes a cord input end 47, a terminal-receiving side 48 and a side 49 opposite the terminal-receiving side.
  • the cord input end 47 of the housing 41 is formed with a flared cord input aperture (not shown) which opens to a plurality of conductor- receiving troughs 56-56.
  • the conductor-receiving troughs 56-56 are constructed to provide a plurality of individual duct-like compartments which are disposed in one tier for receiving the conductors of a cord 20. They extend longitudinally from the vicinity of the free end 46. Each of the compartments is of sufficient size to accept one of the insulated conductors of the cordage 21.
  • An assembler removes a sufficient length of the cordage jacket 34 to permit insertion of the insulated conductors into the troughs 56-56. Then the assembler installs the jacketed portion of the cordage 21 into the cord-input aperture with the insulated conductors extending farther along into the troughs 56-56.
  • the plug 23 of this invention includes a plurality of partitions 61-61 (see FIG. 1).
  • the portion of each partition 61 which extends to and which is coplanar with the terminal-receiving side 48 may extend for only a fraction of the distance between the ends of a well 62 (see FIGS. 1 and 2).
  • each wire-like contact member is received between adjacent ones of the partitions 61-61 adjacent to the free end of the plug or between a partition and a side-wall of the well 62.
  • Each terminal 42 is adapted to be received in a terminal-receiving slot 64-64 (see FIG. 2).
  • Each of the terminal-receiving slots 64-64 opens to a surface 66 and connects the well 62 with an associated one of the conductor-receiving troughs 56-56.
  • the terminal-receiving slots 64-64 extend parallel to the troughs 56-56 and include end walls 68 and 69. As can be seen in FIG. 2, the end walls 68 and 69 are oriented toward the free end 46 and the cord input end 47, respectively, of the housing 41.
  • each of the terminals 42-42 is flat and blade-like and is made from a strip of an electrically conductive material such as, for example, brass or Phosphor-bronze alloy.
  • each terminal 42 includes a body portion 74 defined by flat faces 75-75 which are spaced apart by end edge surfaces 77 and 78.
  • the end surfaces 77 and 78 are interrupted by cutouts 79-79 to form shoulders 76-76.
  • the terminal has an overall height of about 0.38 cm, an overall length of about 0.34 cm and a thickness of about 0.03 cm.
  • Internal contact portions in the form of triangularly shaped tangs 82-82 extend from a lower portion of the body 74 of the terminal 42.
  • the tangs 82-82 pierce through the insulation of and engage electrically the current carrying portions such as, for example, the tinsel ribbons of the insulated conductors 22-22.
  • the tangs 82-82 extend through an aligned associated insulated conductor and become embedded slightly, e. g. about 0.010 cm, in the bottoms of the conductor-receiving facilities of the housing. This supplements side edge support of the terminals 42-42 in the housing 41 to prevent unintended movement of the terminals.
  • the terminal 42 also includes two sets of side edge barbs.
  • One set of barbs 83-83 are disposed adjacent to the tangs 82-82.
  • Another set of side barbs 85-85 are disposed between the barbs 83-83 and shoulder portions 76-76.
  • the out-to-out distance of the side barbs 85-85 is about 0.27 cm.
  • Each terminal 42 has an externally facing portion in the form of a reference edge surface 90 (see FIGS. 1-2 and 6-7).
  • the reference edge surface 90 extends from the end edge surface 78 toward the other end edge surface 77. Because the reference edge surface 90 is spaced a predetermined distance from the tangs 82-82 which engage the plastic material of the housing 41, it becomes a datum or reference surface for internal and external contact portions of the terminal 42.
  • the terminal 42 In order to engage an external component such as a jack wire, the terminal 42 includes an external contact portion.
  • the external contact portion is exposed to an outer surface of the housing to engage an aligned external component such as a wire-like contact element of a jack into which the plug is inserted to complete an electrical circuit from the cord to the jack.
  • the external contact portion is configured to include a fin-shaped protrusion 94 (see FIGS. 1, 2, 6, and 7) which extends from the body portion 74 along the exposed reference edge surface 90 of the terminal.
  • the protrusion 94 is disposed asymmetrically of the body portion 74 and is closer to the end surface 77 than to the end surface 78.
  • the protrusion 94 is adjacent to the termination end 46 of the housing 41.
  • the outermost portion of the protrusion is spaced a predetermined distance above the reference surface 90. This insures that it is within a range of distance, i.e. about 0.046 to 0.071 cm, below the outer edge surfaces of the partitions 61-61 when the tangs 82-82 are embedded in the bottoms of the troughs 56-56.
  • FIGS. 8-9 and FIGS. 10-12 there are shown views of a filamentary core 25 with three tinsel ribbons 27-27, for example, wrapped thereabout which as mentioned hereinbefore may be the structure of one of the insulated cord conductors 22-22.
  • Each of the tinsel ribbons has a thickness of about 0.063 cm and a width of about 0.05 cm.
  • FIG. 10 is shown the ideal wrapping of the three ribbons, the ribbons being designated 101, 103 and 105.
  • the ribbon 101 is wrapped about the core 25 so that it is in continuous engagement with the core.
  • the ribbon 103 is wrapped to cause a portion 107 thereof to overlap a trailing portion of the next successive turn of the ribbon 101.
  • the ribbon 105 is wrapped so that a trailing portion 108 of each turn overlaps a leading pertion of an adjacent turn of the ribbon 101 and so that a leading portion 109 thereof overlaps a trailing portion of an adjacent turn of the ribbon 103.
  • FIG. 12 Still another wrapping arrangement of the ribbons is possible in the cordage. This is depicted in FIG. 12. In it, both of the ribbons 101 and 105 are in substantial engagement with the core 25. The ribbon 103 is would to overlap a trailing end portion of each turn of the ribbon 105 and a leading portion of the ribbon 101.
  • FIGS. 13, 14 and 15 there are shown front elevational views of a prior art blade-like terminal 120, of a presently used terminal 122 and of a terminal 42 of this invention, respectively.
  • One of the differences among the terminals is that portions of the terminal which form the side edge barbs in FIG. 15 are configured differently from those in FIGS. 13 and 14.
  • a broken line 124 in each of FIGS. 13-15 represents an outer topmost portion of the tinsel ribbon arangement of an insulated tinsel conductor 22 positioned in a trough 56 of a plug housing 41, as viewed in FIGS. 13-15.
  • tangs 125-125 of the terminal 120 have a width, w1, as measured in the plane of the drawings along the line 124 of a tinsel conductor terminated by the terminal 120.
  • the width, w1 is the maximum width of the tang 125 as seen by a tinsel ribbon of the conductor 22 penetrated thereby.
  • FIG. 14 because of the shape of tangs 126-126 of the terminal 122, the maximum width of penetration of the tinsel ribbons by a tang 126, w2, is measured in a direction parallel to the line 124 but slightly therebelow.
  • the width of penetration or shear of a tang 82 is labelled w3 and is taken along the line 124 at the outer top of the tinsel wrap.
  • the widths w1 and w2 of prior art and presently used terminals is substantially greater than the width w3 of the terminal of the plug of this invention.
  • substantially less width of a tinsel ribbon is sheared by the tangs of the terminal in FIG. 15 than those in FIGS. 13 and 14.
  • so much of the width of a tinsel ribbon or of a stranded conductor terminated by the terminal of FIG. 13 or of FIG. 14 is sheared, that subsequent movement of the cordage such as, for example, by a customer, may cause the tinsel ribbon to be separated into separate portions along the line of shear.
  • the width w2 of presently used terminals is greater than the distance across a tinsel ribbon as measured parallel to an axis of the conductor.
  • FIGS. 10, 11 and 12 depict the ribbon wrap arrangements with a terminal superimposed thereon.
  • FIGS. 11 and 12 it becomes possible for the tangs of the terminals to penetrate all three of the ribbons after they have been driven into the plastic beds of the conductor-receiving troughs during the assembly of the terminals with the plug housing. Should this occur, particularly with the terminal widths shown in FIGS. 13 and 14, each of the ribbons may separate into portions and be rendered inoperative.
  • a tang of a terminal may become positioned in a gap 111 (see FIG. 11) between congruent turns of ribbons 101 and 103 and an adjacent ribbon 105. This also may occur with a gap 113 of the arrangement shown in FIG. 12. These gaps may be substantially wider than shown so that edge surfaces of adjacent ribbons may not engage or may not maintain electrical engagement with the terminal. Worse, if the spacing between the tangs corresponds to the lay length of the ribbons such as with the terminal 122 in the ribbon arrangement of FIG. 11, both tangs may be received in such gaps.
  • the modular plug of this invention has been overcome with the modular plug of this invention. Not only does the terminal 42 of the modular plug 23 have tangs of substantially less width as measured in a direction parallel to longitudinal axes of the conductors than those of prior art and presently used terminals, but also, the spacing between the tangs differs from the lay length of each of the ribbons (see FIGS. 2, 6 and 10-12). In one embodiment, the center-to-center distance between the tangs is about one and one half times as long as that in prior art terminals.
  • the terminal tangs do not coincide with the gaps between successive turns of the ribbons. Furthermore, insertion of the terminals does not result in the tangs thereof penetrating through substantial portions of the ribbons. As a result, there is a substantially greater probability of sustained electrical contact between the terminal tangs and the ribbons.
  • a portion 130 each tang 82 is coined, preferably, equally from each major side of the terminal 42. Coining of the portions 130-130 facilitates the insertion of the terminals, allowing, for example, the tangs to move between strands of a conductor such as that shown in FIG. 3. Also, because of the coining, somewhat less metal is penetrated than in the use of prior art terminals.
  • the foregoing description has been with respect to a tinsel ribbon conductor. It should be realized that should the insulated conductor be a stranded conductor such as that shown in FIG. 3, the terminals 42-42 of this invention also will result in the penetration of a lower percent of the individual wire-like conductors than occurs with a prior art terminal. As a result, stranded conductors terminated with terminals of this invention have enhanced reliability and sustained integrity over those terminated with terminals of the prior art.
  • a cord conductor may include four ribbons wrapped helically about a filamentary core such that two stacks of two each are provided.
  • a fifth ribbon which spans the two helically wrapped stacks may be added.

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  • Coupling Device And Connection With Printed Circuit (AREA)
  • Multi-Conductor Connections (AREA)

Claims (10)

  1. Un câble (21) terminé par une fiche, qui comprend :
    une longueur de câble (21) qui comprend un ensemble de conducteurs isolés (22-22), chacun d'eux comprenant :
    une âme (25) s'étendant en direction longitudinale,
    au moins un ruban allongé conducteur de l'électricité (27) qui est enroulé en hélice avec un certain pas, en un ensemble de spires autour de l'âme (25), et
    un matériau isolant (31) qui recouvre le dit au moins ruban (27) et
    une fiche modulaire (23) qui termine une extrémité de la longueur de câble (21), cette fiche (23) comprenant :
    un corps (41) qui comprend une cavité destinée à recevoir les conducteurs (22-22) du câble (21);
    un ensemble de fentes (64-64) qui communiquent avec la cavité et avec une surface du corps (41) faisant face vers l'extérieur, chacune de ces fentes (64-64) étant associée et alignée avec l'un des conducteurs (22-22); et
    un ensemble de bornes conductrices de l'électricité (42-42), semblables à des lames, chacune d'elles comprenant deux dents de perçage d'isolant (82-82) adjacentes et espacées, se trouvant le long d'une surface de bord de la borne, et chaque borne étant disposée dans l'une des fentes (64-64), de façon que des parties des dents (82-82) pénètrent dans ledit au moins un ruban (27) d'un conducteur associé aligné (22), pour établir une liaison électrique avec celui-ci, caractérisé en ce que les parties des dents (82-82) de chaque borne (42) qui sont en liaison avec le dit au moins un ruban (27) du conducteur associé aligné (22) ont chacune une largeur, mesurée dans une direction parallèle à l'axe longitudinal du conducteur associé aligné (22), qui est inférieure à la largeur d'une spire du dit au moins un ruban (27), mesurée dans une direction parallèle à l'axe longitudinal du conducteur aligné (22), pour minimiser la quantité de laquelle le dit au moins un ruban (27) est pénétré par la borne (42), lorsque la borne (42) est insérée, et en ce que ces dents (82-82) sont mutuellement espacées d'une distance qui est telle que l'une des deux dents adjacentes (82-82) pénètre dans une partie notablement supérieure de la largeur d'une spire du dit au moins un ruban (27), mesurée dans une direction parallèle à l'axe longitudinal du conducteur aligné (22), comparée à la partie de la largeur d'une autre spire dans laquelle pénètre l'autre dent parmi les deux dents adjacentes (82-82).
  2. Le câble terminé de la revendication 1, dans lequel chaque dent de chaque borne, dans un plan qui est de façon générale parallèle à un axe longitudinal d'un conducteur, a une forme triangulaire, avec une base fixée à une partie principale de la borne et un sommet enfonce dans le corps, et dans lequel l'épaisseur de chaque dent de chaque borne diminue dans une direction allant de la partie principale de chaque borne vers le sommet de chaque dent de chaque borne.
  3. Le câble terminé de la revendication 1, dans lequel chaque conducteur comprend une âme s'étendant en direction longitudinale, au moins un ruban allongé, conducteur de l'électricité, qui est enroulé en hélice avec un certain pas autour de l'âme; et un matériau isolant qui recouvre le dit au moins un ruban; et dans lequel la fiche comprend un ensemble de bornes conductrices de l'électricité, semblables à des lames, chacune d'elles comprenant des dents de perçage d'isolant le long d'une surface de bord de la borne, et chaque borne étant disposée dans l'une des fentes de façon que les dents pénètrent dans le dit au moins un ruban d'un conducteur associé aligné, pour établir une liaison électrique avec celui-ci, les dents de chaque borne ayant chacune une largeur, mesurée dans une direction parallèle à l'axe longitudinal du conducteur associé aligné, dans des parties des dents qui sont en liaison avec le dit au moins un ruban du conducteur associé aligné, qui minimise la quantité de laquelle ledit au moins un ruban est pénétré par la borne, lorsque cette dernière est insérée, et les dents étant mutuellement espacées d'une distance qui est différente d'un multiple du pas du dit au moins un ruban.
  4. Le câble terminé de la revendication 1, dans lequel les dents de chaque borne sont mutuellement espacées d'une distance qui diffère d'un multiple pair du pas.
  5. Le câble terminé de la revendication 4, dans lequel ce câble comprend trois rubans, avec une configuration dans laquelle chaque spire de chaque ruban est en contact avec l'âme et a une partie de bord longitudinal qui est en contact avec une partie de bord longitudinal de chacun des deux rubans adjacents.
  6. Le câble terminé de la revendication 4, dans lequel ce câble comprend trois rubans avec une configuration dans laquelle des spires de l'un des rubans sont pratiquement superposés sur un autre des rubans, et des spires du troisième ruban sont interposées entre des spires adjacentes des rubans superposés.
  7. Le câble terminé de la revendication 4, dans lequel des spires successives de deux des rubans alternent avec des spires successives de chaque autre ruban, et dans lequel chaque spire successive du troisième ruban n'est pas en contact avec l'âme et recouvre une partie des spires adjacentes des deux rubans.
  8. Un assemblage à fiche modulaire comprenant une longueur de câble (21) et une fiche modulaire (23) qui termine une extrémité de cette longueur de câble (21), comprenant un ensemble de conducteurs isolés (22-22), chacun d'eux comprenant une âme (25) et un ensemble de rubans conducteurs de l'électricité (27-27) qui sont enroulés en hélice en un ensemble de spires autour de l'âme (25), chaque ruban (27) ayant un certain pas d'hélice, cette fiche (23) comprenant :
    un corps (41) qui comprend une cavité destinée à recevoir les conducteurs (22-22) du câble (21);
    un ensemble de fentes (64-64) qui communiquent avec la cavité et avec une surface du corps (41) faisant face vers l'extérieur, chacune des fentes (64-64) étant adaptée pour être alignée et associé avec un conducteur (22); et
    un ensemble de bornes conductrices de l'électricité (42-42), semblables à des lames, chacune d'elles comprenant deux dents de perçage d'isolant (82-82) adjacentes et espacées, le long d'une surface de bord de la borne, et chaque borne étant disposée dans l'une des fentes (64-64), de façon que les dents (82-82) pénètrent dans le conducteur associé aligné (22) pour établir une liaison électrique avec celui-ci, caractérisé en ce que les dents (82-82) de chaque borne (42) ont chacune une largeur, mesurée dans une direction parallèle à l'axe longitudinal du conducteur associé aligné (22), dans les parties des dents (82-82) qui sont en liaison avec les rubans (27-27), qui est inférieure à la largeur d'une spire d'un ruban (27), mesurée dans une direction parallèle à l'axe longitudinal du conducteur associé aligné (22), pour minimiser la qualité de laquelle chaque ruban (27) est coupée par la borne (42) lorsque la borne (42) est insérée, et en ce que les dents (82-82) sont mutuellement espacées d'une distance qui est telle que l'une des deux dents adjacentes (82-82) pénètre dans une partie notablement supérieure de la largeur d'un ruban (27), mesurée dans une direction parallèle à l'axe longitudinal du conducteur aligné (22), comparée à la partie de la largeur d'une autre spire dans laquelle pénètre l'autre dent parmi les deux dents adjacentes (82-82).
  9. L'assemblage à fiche modulaire de la revendication 8, dans lequel le câble qui est ainsi terminé comprend un ensemble de conducteurs isolés, chacun d'eux comprenant une âme et un ensemble de rubans conducteurs de l'électricité qui sont enroulés en hélice autour de l'âme, avec un pas d'hélice pour chaque ruban, et dans lequel les dents sont mutuellement espacées d'une distance qui est différente d'un multiple du pas d'un ruban quelconque .
  10. L'assemblage à fiche modulaire de la revendication 9, dans lequel chaque dent de la borne, dans un plan qui est de façon générale parallèle à un axe longitudinal d'un conducteur, a une forme triangulaire avec une base fixée à une partie principale de la borne et un sommet enfoncé dans le corps de la fiche, et dans lequel l'épaisseur de chaque dent de la borne diminue dans une direction allant de la partie principale de la borne vers le sommet de chaque dent de la borne.
EP92304237A 1991-05-14 1992-05-12 Cordage terminé par une prise modulaire avec engagement borne-conducteur amélioré Expired - Lifetime EP0514113B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US70001791A 1991-05-14 1991-05-14
US700017 1991-05-14

Publications (3)

Publication Number Publication Date
EP0514113A2 EP0514113A2 (fr) 1992-11-19
EP0514113A3 EP0514113A3 (en) 1992-12-30
EP0514113B1 true EP0514113B1 (fr) 1996-03-06

Family

ID=24811872

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Application Number Title Priority Date Filing Date
EP92304237A Expired - Lifetime EP0514113B1 (fr) 1991-05-14 1992-05-12 Cordage terminé par une prise modulaire avec engagement borne-conducteur amélioré

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EP (1) EP0514113B1 (fr)
CA (1) CA2068485C (fr)
DE (1) DE69208728T2 (fr)
MX (1) MX9202222A (fr)
TW (1) TW325928U (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2651764A (en) * 1951-02-24 1953-09-08 Gordon P Felts Tinsel wire connector for electrical conductors
US4148539A (en) * 1977-04-29 1979-04-10 Western Electric Company, Incorporated Modular plug having superior dielectric strength for terminating cords
US4909755A (en) * 1988-12-08 1990-03-20 Swan Chen Conducting terminal of a telephone cord plug
DE8908855U1 (de) * 1989-07-20 1990-11-15 Siemens AG, 1000 Berlin und 8000 München Vorrichtung zum Kontaktieren mindestens eines elektrischen Leiters

Also Published As

Publication number Publication date
TW325928U (en) 1998-01-21
CA2068485C (fr) 1995-06-27
DE69208728D1 (de) 1996-04-11
DE69208728T2 (de) 1996-07-25
EP0514113A3 (en) 1992-12-30
EP0514113A2 (fr) 1992-11-19
MX9202222A (es) 1992-11-01

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