EP0011031A1 - Verbinder zur Verbindung ohne Abisolieren von elektrischen Leitungsdrähten und Werkzeuge zum Anquetschen für einen solchen Verbinder - Google Patents

Verbinder zur Verbindung ohne Abisolieren von elektrischen Leitungsdrähten und Werkzeuge zum Anquetschen für einen solchen Verbinder Download PDF

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Publication number
EP0011031A1
EP0011031A1 EP79400799A EP79400799A EP0011031A1 EP 0011031 A1 EP0011031 A1 EP 0011031A1 EP 79400799 A EP79400799 A EP 79400799A EP 79400799 A EP79400799 A EP 79400799A EP 0011031 A1 EP0011031 A1 EP 0011031A1
Authority
EP
European Patent Office
Prior art keywords
connector
tube
conductors
jaws
rasp
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Withdrawn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
EP79400799A
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English (en)
French (fr)
Inventor
Bernard Sauvaget
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.)
FCI France SA
Original Assignee
Souriau et Cie
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 Souriau et Cie filed Critical Souriau et Cie
Publication of EP0011031A1 publication Critical patent/EP0011031A1/de
Withdrawn legal-status Critical Current

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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
    • 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
    • H01R4/2495—Insulation penetration combined with permanent deformation of the contact member, e.g. crimping
    • 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

Definitions

  • the present invention relates to a connector for ensuring a connection without stripping of electrically conductive cables, as well as crimping tools for such a connector.
  • the ends of the conducting cables are introduced between the free ends of two branches joined by their other end to constitute an elastic clamp, made of conducting metal, and of generally conical shape, at least one of the branches of which carries , at its free end, a row of teeth or a cutting blade, arranged transversely on the longitudinal axis of the pliers.
  • the bringing together of the branches causes the teeth or the blade to cross or cut the insulating sheath of the conductors, and bring the latter into contact with the core of the conductors.
  • each clamp is introduced into a corresponding generally conical housing of an insulating cap, maintaining the connection, until a pin, a bead or a shoulder of each branch is placed in a groove or behind a shoulder of the cap to prevent the clamp from coming out of the cap.
  • the ends of the conductors can be inserted side by side in a single clamp, or each in one of two clamps then placed back-to-back. back in a cap having two conical housings opening into each other by their top.
  • This connector also has the drawback of a very small number of contact points between the core of the conductors and the connecting strips, these contact points being moreover located in the same transverse plane, hence a reduction in the resistance of the conductor and poor electrical continuity especially in the case where the conductors are the subject of successive connections.
  • the structure of this connector is complex, since the latter consists of nine pieces of seven different types, and, on the other hand, the mechanical and electrical connection depends on the quality of the fixing of the two half-olives. one on the other, for example by screwing.
  • connectors of this type are complex, delicate to manufacture, therefore expensive, and their possibilities of use are limited to the connection of conductors of fairly similar diameters.
  • German patent 1,280,952 and French patents 1,441,209, 2,003,365 and 2,025,232 there are known self-stripping connectors, which are crimped on the ends of conductors by means of a tool, to achieve splices.
  • These connectors consist essentially of three elements of generally cylindrical shape with oval section, including an inner sleeve with a thin wall, made of a hard and elastic conductive material, in which are made, ie a succession of transverse lines, with respect to the axis. of the sleeve, of generally triangular teeth directed towards the inside of the sleeve, that is to say a network of parallel rows of pins, identical to each other, arranged in a staggered network, and having a main direction perpendicular to the surface of the sleeve , which is thus presented in the form of a rasp.
  • This rasp is received on the inner lateral surface of an outer sleeve, with a thick wall, made of a conductive and deformable metallic material, one end of which is open and the other of which may be either also open or of ogival shape and closed, this external sleeve itself being received in an external insulating jacket, of a heat-shrinkable material, which is open at the end corresponding to the open end of the deformable external sleeve, to allow insertion by this single side ends to connect conductors, and the other end of which is narrowed and possibly closed.
  • Crimping is obtained by means of a tool, the pressure jaws or jaws of which consist of two planes inclined one on the other, pressing at their ends closer together against a stop, so that the crimped connector takes a shape with a conical longitudinal section, and has a progressive depression of the teeth or pins in the sheaths then in the conductors' cores by considering the conical section from the base to the top of the cone.
  • the contact element is a sleeve retained in a heat-shrinkable jacket which defines at one end of the sleeve, an opening for the introduction of the ends of the two conductors to be connected, up to 'when they come into abutment against a shutter retained or defined at the other end of the sleeve by the heat-shrinkable shirt.
  • connectors of simplified structure since comprising only two essential elements, however have the drawbacks that the projections with sharp edges consist of annular ribs or helical threads, so that they constitute cleavers capable of cutting strands of 'a conductive cable with a multi-core core or weakening a conductive cable with a single-core or solid core, and that the conductor (s) to be connected can only be introduced on one side of the connector.
  • the use of such connectors is limited to making splices, and reduces the mechanical resistance and the electrical continuity of the connection.
  • the connector By the present invention, it is proposed to remedy the various drawbacks presented by known connectors, by means of a connector of a very simple structure, comprising only a small number of components, each of these components being itself easy and inexpensive to manufacture, the crimping operation being carried out safely and easily using simple tools, to obtain good mechanical strength and good fatigue strength of the connection, as well as good continuity of the electrical connection, without damage to the conductors, in particular, for their core, whether it is multi-wire or single-wire, even if these conductors have very appreciably different diameters, the connector finally having to make it possible to make both splices, between conductive cables whose ends are presented side by side, as well as connections between conductors whose ends are placed end to end, and that branches between at least one uncut conductor passing through the connector right through and conductors one end of which is introduced into the connector.
  • the connector according to the invention intended to ensure the connection without stripping of such electrical conductors, is of the type comprising a cylindrical retaining tube, on the internal lateral surface of which is retained an element in the form of a rasp, made of an electrically conductive material, and made up of parallel rows of pins, identical to each other, arranged in a staggered network, and having a main direction perpendicular to the internal surface of the tube, is characterized in that the tube cylindrical, open at both ends, is of circular internal and external section and of constant thickness, and in that the rasp has a base of also cylindrical shape, of circular section, open at its ends, so as to be able to receive by one and / or the other of its ends of the ends of electrically conductive cables to be connected together and / or at least one electrically conductive cable threaded into the connector which it passes right through.
  • a good anchoring of the conductors in the connector is obtained if the pins have, at the end, two points separated by a groove.
  • the connector according to the invention presented above is crimped onto at least one end inserted into the connector of a conductive cable and / or at least one conductive cable threaded into the connector that '' it crosses right through, the penetration of the pins of the rasp in the sheaths then in the cores of the conductors being doubly progressive and stepped from the ends of the connector towards its central part, symmetrical pins with respect to the longitudinal axis of the tube being the closest to each other and the most deep in the core of the conductors in the central part of the rasp and the tube, and the least close to each other and the least deep in the core and / or in the conductor sheath at both ends of the rasp.
  • the holding tube is made of a deformable non-conductive material, since the conductive rasp is thus pro tégée against any introduction by the ends of the connector of any metal part likely to cause a short-circuit.
  • a tool according to the invention comprising two symmetrical shapes capable of being brought close to each other, is characterized in that each of the shapes comprises two inclined planes forming a dihedron whose the edge is parallel and is the nearest part of the edge of the dihedron formed by the two inclined planes that includes the other form, so that the crimping of the connector receiving the cables between deu "- forms, ensures, in a progressive and staged fashion, the penetration of the pins in the sheaths and in the cores of the cables.
  • each dihedron is placed between two beads of border of the shapes of the tool, the ends of the tube are crimped holding on the sheaths.
  • the invention has for subject a second crimping tool, the relaxation of which, after deformation of the connector, is not followed by an opposite deformation of the connector, by elastic return, and of sufficient amplitude to alter, mechanically and electrically, the quality of connection.
  • the second crimping tool comprising two jaws capable of being brought closer to one another, is characterized in that the jaws have corrugations in correspondence and cooperating during ser weaving, with a decreasing profile, the interval between the jaws in their central part being less than what it is at their ends.
  • the "wave” crimping thus obtained avoids the elastic return of the connector and, moreover, increases the mechanical resistance of the connection.
  • the stepped or progressive depression of the pins in the sheath and the core of the conductors is obtained by the decreasing profile, preferably even gradually decreasing, of the undulations.
  • At least one of the jaws can, moreover, have at least one flat surface between two undulations.
  • the undulations of the two jaws are of complementary shape, and are only provided on the central part of the jaws, at least one end of which is planar, and constitutes with the planar end facing the other jaw, a diverging turned towards the sides of the tool.
  • the crimping tool shown in Figure 2 which can be manual, and be in the form of pliers, or be mounted on a press with manual or automatic control, comprises two forms or symmetrical jaws 5 and 6 which can be brought together.
  • Each of the forms 5 and 6 comprises two inclined planes 7 and 8, forming a dihedron whose edge 9 is parallel to the edge 9 of the other dihedron, and constitutes the part of the dihedron closest to the other dihedron, each of the dihedrons being disposed between two beads 10 and 11 forming an edge of the shapes 5 and 6 on each side of the tool.
  • the connector After having introduced, for example into one end of the holding tube 1, the end to be connected with a cable, the end of another cable being introduced into the other end of the tube 1, and after having arranged the tube 1, receiving the ends of the cables, between the two forms 5 and 6 of the tool, the connector can be crimped onto the cables, bringing forms 5 and 6 closer to one another.
  • the connector thus obtained ensures the retention, in the holding tube 1, of a small diameter cable 12, electrically connected to a large diameter cable 13, by the pins 3 of the rasp which, thanks to the inclined planes 7 and 8 guaranteeing a progressive penetration of the pins 3 in the sheaths and the cores of the cables 12 and 13 during crimping, pass through the two sheaths and are embedded in the cores of the conductors in the central part 14 of the tube 1, where the pins 3, symmetrical with respect to the axis of the tube 1, are closest to each other, which defines an electrical connection without stripping the cables, without damaging their core, because the numerous points of contact are distributed axially along the conductors, while at the ends 15 and 16 of the tube 1, where the pins 3 symmetrical with respect to the axis of the tube 1 are the least close to each other, the pins 3 of the end 15 penetrate into the sheath of the cable 13 of large diameter and improve its retention in the tube 1, the sheath of the small diameter cable being only slightly
  • the penetration and incrustation of the p'cots 3 in the sheaths and the cores of the conductors 12 and 13 will be more or less facilitated, depending on the particular profile presented by the pins 3.
  • the pins 3 have , at the end, two points 17 separated by a furrow. This profile gives good results of incrustation and penetration, without causing too marked cutting of the sheaths or shearing the conductive cores, due to the staggered arrangement of the pins 3.
  • the connector thus crimped has a shape such that an elastic return of its walls can possibly develop.
  • tools can be used according to FIGS. 4 and 5.
  • the tool comprises two jaws 17 and 18, capable of being brought towards and away from each other.
  • Each of the jaws 17 and 18 has corrugations 19 and 20 respectively, which are in correspondence and cooperating during crimping to give the connector, initially of cylindrical external shape, a shape wavy or "in waves".
  • the undulations 19 and 20 have a gradually decreasing profile, that is to say that the interval separating the jaws is minimal in their median plane and gradually increases towards their ends.
  • the pins 3 of the rasp 2, received inside the holding tube 1 are brought to gradually penetrate the sheaths and the cores of the electrically conductive cables 12, of smaller diameter, and 13, larger diameter, introduced into the ' connector, for example each by one of the ends of the latter, during crimping.
  • the pins 3 pass through the sheaths of the two conductive cables 12 and 13 and are embedded in their cores, since the pins 3 initially arranged symmetrically with respect to the axis of the tube 1 are the closest from each other, which defines an electrical connection without stripping the cables 12 and 13, while towards the ends of the tube 1, where the pins 3 are, in the section plane, the most distant from each other, the pins 3 penetrate only into the insulating sheaths of the conductive cables 12 and 13, which ensures the retention of the latter in the connector.
  • the mechanical strength of the connection is improved by pinching the cables 12 and 13 due to the "wave" shape given to the connector by the corrugations 19 and 20 of the two jaws 17 and 18.
  • the tool shown in FIG. 5, comprises two jaws 21 and 22 having, in their central part, corrugations 23, 24 and 25, 26, of complementary shapes, separated on each jaw, by a flat surface 27 and 28.
  • the ends 29 and 30 of the jaw 21 are planar and parallel to the axis of the tube 1 when the latter is not deformed, and constitute with the ends 31 and 32 opposite the other jaw 22 diverging facing the sides of the tool, the ends 31 and 32 of the jaw 22 being either either flat and inclined on the axis of the tube 21 before deformation, or wavy.
  • the planar ends 29 and 30 are one and / or the other inclined on the axis of the tube 1, just as the ends 29 and 32 can be planar and parallel to this axis.
  • the ends 30 and 31 are flat and inclined on this axis.
  • the tools according to the invention will advantageously be used to crimp connectors according to the invention in all cases where it is wished to quickly proceed to the connection of conductive cables or to carry out branches or splices on these without having to strip them off.
  • At least two conductive cables are received in the connector before crimping, either that the two cables are introduced by the same end of the tube, or that each of the cables is alone to be introduced by one extremities. It is also possible to connect a given number of conductive cables, introduced by one end of the tube to another given number of conductive cables, introduced by the other end of the tube, or alternatively to make branches by connecting with one or more conductors not sectioned. , passing through the connector before crimping, the end of one or more other conductors, introduced into the tube by one or the other of its ends, by means of connectors according to the invention.

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  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
EP79400799A 1978-10-27 1979-10-26 Verbinder zur Verbindung ohne Abisolieren von elektrischen Leitungsdrähten und Werkzeuge zum Anquetschen für einen solchen Verbinder Withdrawn EP0011031A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7830674A FR2440090A1 (fr) 1978-10-27 1978-10-27 Connecteur pour raccordement sans denudage de cables conducteurs electriques et outil de sertissage pour un tel connecteur
FR7830674 1978-10-27

Publications (1)

Publication Number Publication Date
EP0011031A1 true EP0011031A1 (de) 1980-05-14

Family

ID=9214269

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79400799A Withdrawn EP0011031A1 (de) 1978-10-27 1979-10-26 Verbinder zur Verbindung ohne Abisolieren von elektrischen Leitungsdrähten und Werkzeuge zum Anquetschen für einen solchen Verbinder

Country Status (2)

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EP (1) EP0011031A1 (de)
FR (1) FR2440090A1 (de)

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR528429A (fr) * 1920-12-11 1921-11-12 Pierre Joseph Pairard Procédé et dispositif de raccordement des fils et cables par manchonnage sinusoidal
US2534881A (en) * 1946-04-20 1950-12-19 Henry J Schroeder Electrical wire connector with insulation piercing means
FR1036389A (fr) * 1951-05-02 1953-09-07 Procédé pour la jonction de deux conducteurs électriques
FR1340586A (fr) * 1962-12-05 1963-10-18 Amp Inc Connexions électriques serties
FR1441209A (fr) * 1964-07-24 1966-06-03 Western Electric Co Connecteur pour conducteurs isolés
FR1487772A (fr) * 1965-07-26 1967-07-07 Int Standard Electric Corp Outil de sertissage
DE1280952B (de) * 1960-06-10 1968-10-24 Western Electric Co Metallischer Verbinder fuer elektrische Leiter, insbesondere isolierte Leiter
US3496520A (en) * 1967-05-11 1970-02-17 Amp Inc Fuel cell tab
FR2025232A1 (de) * 1968-12-04 1970-09-04 Superior Continental
DE1935547A1 (de) * 1969-07-12 1971-01-21 Rose Walter Kg Kontakthuelse zur loetfreien Verbindung von elektrischen Leitern
FR2049809A5 (de) * 1970-06-02 1971-03-26 Drogo Pierre
FR2203570A5 (de) * 1972-09-20 1974-05-10 Rose Kig Walter
DE2754341A1 (de) * 1977-12-07 1979-06-13 Kabel Metallwerke Ghh Vorrichtung zum anschlagen von steckerstiften an leitungen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2725545A (en) * 1953-12-28 1955-11-29 Gordon Harry Electrical connector having insulation penetrating means contactiong the conductors
US3539708A (en) * 1968-03-06 1970-11-10 Anaconda Wire & Cable Co Electrical connector and apparatus and method for making same
DE2412540C3 (de) * 1974-03-15 1979-08-02 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verbindunshülse für isolierte elektrische Leiter

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR528429A (fr) * 1920-12-11 1921-11-12 Pierre Joseph Pairard Procédé et dispositif de raccordement des fils et cables par manchonnage sinusoidal
US2534881A (en) * 1946-04-20 1950-12-19 Henry J Schroeder Electrical wire connector with insulation piercing means
FR1036389A (fr) * 1951-05-02 1953-09-07 Procédé pour la jonction de deux conducteurs électriques
DE1280952B (de) * 1960-06-10 1968-10-24 Western Electric Co Metallischer Verbinder fuer elektrische Leiter, insbesondere isolierte Leiter
FR1340586A (fr) * 1962-12-05 1963-10-18 Amp Inc Connexions électriques serties
FR1441209A (fr) * 1964-07-24 1966-06-03 Western Electric Co Connecteur pour conducteurs isolés
FR1487772A (fr) * 1965-07-26 1967-07-07 Int Standard Electric Corp Outil de sertissage
US3496520A (en) * 1967-05-11 1970-02-17 Amp Inc Fuel cell tab
FR2025232A1 (de) * 1968-12-04 1970-09-04 Superior Continental
DE1935547A1 (de) * 1969-07-12 1971-01-21 Rose Walter Kg Kontakthuelse zur loetfreien Verbindung von elektrischen Leitern
FR2049809A5 (de) * 1970-06-02 1971-03-26 Drogo Pierre
FR2203570A5 (de) * 1972-09-20 1974-05-10 Rose Kig Walter
DE2754341A1 (de) * 1977-12-07 1979-06-13 Kabel Metallwerke Ghh Vorrichtung zum anschlagen von steckerstiften an leitungen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BELL LABORATORIES RECORD, Decembre 1957, Murray Hill (US) W.C. KLEINFELDER "Cable splicing goes modern", pages 499-501. * Page 500, colonne de droite, alineas 1-3; page 501, alineas 1,2 * *

Also Published As

Publication number Publication date
FR2440090A1 (fr) 1980-05-23
FR2440090B1 (de) 1982-04-23

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Inventor name: SAUVAGET, BERNARD