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EP2541684A1 - Connector for mutually connecting two electrical cables - Google Patents

Connector for mutually connecting two electrical cables Download PDF

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Publication number
EP2541684A1
EP2541684A1 EP12173702A EP12173702A EP2541684A1 EP 2541684 A1 EP2541684 A1 EP 2541684A1 EP 12173702 A EP12173702 A EP 12173702A EP 12173702 A EP12173702 A EP 12173702A EP 2541684 A1 EP2541684 A1 EP 2541684A1
Authority
EP
European Patent Office
Prior art keywords
jaw
cables
jaws
nail
connector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP12173702A
Other languages
German (de)
French (fr)
Inventor
Vivien Rineau
Jean-Luc Lagarde
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.)
Societe Industrielle de Construction dAppareils et de Materiel Electriques SICAME SAS
Original Assignee
Societe Industrielle de Construction dAppareils et de Materiel Electriques SICAME SAS
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 Societe Industrielle de Construction dAppareils et de Materiel Electriques SICAME SAS filed Critical Societe Industrielle de Construction dAppareils et de Materiel Electriques SICAME SAS
Publication of EP2541684A1 publication Critical patent/EP2541684A1/en
Withdrawn legal-status Critical Current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
    • 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
    • H01R4/2408—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation actuated by clamping screws
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/514—Bases; Cases composed as a modular blocks or assembly, i.e. composed of co-operating parts provided with contact members or holding contact members between them
    • 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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
    • H01R4/44—Clamping areas on both sides of screw
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/03—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations
    • H01R11/07—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations the connecting locations being of the same type but different sizes
    • 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
    • H01R4/06—Riveted connections

Definitions

  • the invention relates to connectors for connecting two electric cables to one another.
  • the connector described by this document comprises: two jaws and a screw / nut pair to bring said jaws closer to each other, each said jaw comprising a body of rigid insulating material and a conductive contact member having two active parts projecting each a receiving face of the body respectively to penetrate the conductive core of a cable and the conductive core of the other cable, each receiving face of the body of each jaw being opposite the receiving face of the body of the other jaw with each active part of the contact member of a jaw to the right of an active part of the contact member of the other jaw, said connector admitting a positioning position of the cables between the receiving faces of the jaws with each active part of a contact member to the right of a cable and admitting a service position where the cables are sandwiched between the jaws with each other an active part which has penetrated into a conductive core of a respective cable, said connector being configured to pass from the position of placing the cables to the service position by bringing the jaws closer together with the screw / nut couple, a predetermined race.
  • the invention aims to provide a similar connector simple, convenient and economical.
  • the invention proposes for this purpose a connector for connecting two electric cables to each other, comprising two jaws and a clamping member for bringing said jaws closer to each other, each said jaw comprising a body made of material rigid insulator and a conductive contact member having two active parts each projecting from a receiving face of the body respectively to penetrate into the conductive core of one cable and into the conductive core of the other cable, the receiving face.
  • each jaw being opposite the receiving face of the body of the other jaw with each active part of the contact member of a jaw to the right of an active part of the contact member of the another jaw, said connector being configured to take a position of placing the cables between the receiving faces of the jaws with each active part of a contact member to the right of a cable, to take a positi in use where the cables are sandwiched between the jaws with each active part of each contact member which has penetrated into a conductive core of a respective cable, and to move from the position of placing the cables to the position service by approximation of the jaws, with the clamping member, a predetermined stroke; characterized in that said clamping member is a blind rivet having a barrel and a nail, which blind rivet is configured so that the barrel contracts in the axial direction, under the action of the nail, between the position of placement of the cables and the service position, and configured so that the nail breaks when said jaws are closer to said predetermined stroke.
  • the clamping member of the connector according to the invention is not a torque screw / nut but a blind rivet.
  • the blind rivet drives the jaws towards one another to make them penetrate the cables.
  • a blind rivet may have a jaw training function
  • the Applicant's tests have shown that a blind rivet is capable of providing both the stroke and the effort required for the jaws penetrate the cables and the failure of the nail occurs exactly when the penetration depth required in the cables has been reached.
  • the connector 1 represented in Figures 1 to 5 aims to electrically connect two cables 3 between them.
  • This connector 1 comprises a first jaw 2a, a second jaw 2b and a blind rivet 4.
  • Each jaw 2a, 2b comprises a body 20, two conductive contact members 21 and a gasket 23.
  • Each body 20 is made of rigid insulating material. It is in the form of a shell having a receiving face 25, an end face 27 opposite to the receiving face 25 and four side faces 26a, 26b, 26c, 26d each extending from the receiving face. 25 to the end face 27. Of these, a first side face 26a is opposed to a second side face 26b.
  • the receiving face 25 has two gutters 32 extending from the face 26a to the face 26b.
  • Each body 20 is traversed by a housing 24 opening on the one hand on the end face 27 and on the other side on the receiving face 25, between the two gutters 32.
  • a lug 50 protrudes from each side face 26a, 26b.
  • Each lug 50 is located at the junction of the corresponding lateral face 26a, 26b with the receiving face 25, between the ends of the gutters 32 (see FIG. figure 3 ).
  • each wall 51 extends towards the opposite of the receiving face 25.
  • each wall 51 is in the form of a stirrup whose ends are located at the junction of the receiving face 25 and the corresponding lateral face 26a or 26b (see FIG. figure 2 ).
  • the housing 24 of the first jaw 2a opens on the receiving face 25 by a circular contour orifice 53 and on the end face 27 by an orifice 52 with an oval contour.
  • the housing 24 of the second jaw 2b has two cylindrical portions.
  • a first portion of the housing 24 is a bore 33 which opens out on the receiving face 25.
  • the other portion of the housing 24 is a countersink 29 of diameter greater than that of the bore 33. This countersink 29 opens on the end face 27 by a circular contour orifice 60.
  • a metal washer 28 is attached to the bottom of the countersink 29.
  • the washer 28 is secured to the body 20 because it is engaged by force in the countersink 29.
  • the metal washer 28 is maintained by others means, for example by snapping.
  • Each contact member 21 is a thin U-shaped metal plate having a central branch and two distal branches.
  • the distal branches each comprise an active portion 22 at their end.
  • Each active part 22 here comprises three pointed teeth arranged side by side. Alternatively, the number of teeth is different from three, for example two teeth or more than three teeth.
  • Each gasket 23 comprises two envelopes 55a and 55b each designed to receive one of the contact members 21, leaving only the active portions 22 emerge, through a cradle 54a, 54b, 54c or 54d respectively. bow shape.
  • Each envelope 55a and 55b comprises two side-by-side flanges delimiting a median housing 58 where a contact member 21 is placed by an orifice 59 opposite the cradles 54a and 54b or 54c and 54d.
  • the envelopes 55a and 55b are connected by tile-shaped bridges 56a and 56b respectively arranged between the cradles 54b and 54c and between the cradles 54a and 54d.
  • a protrusion 57 protrudes from each of the bridges 56a and 56b apart and facing the envelopes 55a and 55b.
  • the seals 23 have no protuberance such as 57.
  • the cables 3 are here of conventional type, each comprising a conductive core 30 and an insulating sheath 31.
  • the blind rivet 4 comprises a nail 40 and a hollow shaft 43.
  • the nail 40 has a body 41 and a head 42.
  • the shaft 43 has a body 44 and a head 45.
  • the blind rivet 4 is configured to move from a crimped state ( figure 4 ) to a crimped state ( figure 5 ).
  • the body 41 of the nail 40 is engaged in the body 44 of the barrel 43 and protrudes from the body 44 on the side of the head 45.
  • the head 42 of the nail 40 is against the end of the body 44 opposite the head 45.
  • the head 42 In the crimped state, the head 42 is forcibly engaged in the body 44, the body 44 has a bead 47 around the head 42 and the nail 40 is cut into a rupture zone 46.
  • the shaft 43 is made of easily deformable metal, for example aluminum, stainless steel or annealed copper.
  • the nail 40 is of low deformable material, for example hard steel.
  • the body 41 has a necking (not shown) of predetermined conformation.
  • the seals 23 enclosing the contact members 21 are each forced into the body 20 of the corresponding jaw 2a or 2b.
  • Each seal 23 is complementary to a cavity on the respective body 20.
  • the curvature of the cradles 54a, 54b, 54c, 54d follows that of the gutters 32.
  • the jaws 2a and 2b are arranged with the receiving faces 25 facing each other.
  • the lugs 50 are housed in the stirrups 51, holding the jaws 2a, 2b with each other while allowing them to move closer or move away within a predefined range.
  • the blind rivet 4 in the crimped state is inserted by the head 42 in the oval-shaped orifice 52 to exit through the orifice 60.
  • the blind rivet 4 is inserted slightly forcibly through the washer 28.
  • the connector is then in a ready-to-use state.
  • the jaws 2a, 2b can be moved closer together or apart from each other with the blind rivet 4 which remains in place.
  • the body 44 of the barrel 43 is configured to protrude from the washer 28 when the jaws 2a, 2b are separated by the greatest thickness provided for the cables 3 and that the head 45 bears on the end face 27 of the jaw 2a. In the position of maximum separation of the jaws 2a and 2b fixed by the abutment of the lugs 50 against the bottom of the light defined by the corresponding wall 51, the barrel 44 is still in contact with the washer 28.
  • the cables 3 are introduced laterally into the gutters 32.
  • the two jaws 2a, 2b can be brought closer manually to put the active parts 22 in contact with the cables 3.
  • the connector 1 is then in position for placing the cables ( figure 4 ).
  • the blind rivet 4 is crimped using a rivet pliers (not shown).
  • the rivet clamp is of conventional type comprising a mandrel.
  • the mandrel is placed around the body 41 of the nail 40. It is movable relative to a stop that bears on the head 45 of the barrel 43.
  • the body 41 is subjected by the mandrel to a traction or a series of pulls, thus bringing the blind rivet 4 of the state to crimp in the crimped state.
  • the depth of penetration of the active parts 22 in the conductive core 30 of the cables is decisive for the quality of the electrical connection between the cables 3 and to preserve the integrity of the cables 3.
  • the blind rivet 4 is therefore chosen to achieve its Crimped state when the desired penetration depth is reached.
  • the barrel 43 When the blind rivet 4 is in the crimped state, the barrel 43 has an initial length greater than the sum of the thickness of the first jaw 2a, the thickness of the cables 3, the thickness of the second jaw 2b and the height of the head 42 of the nail 40.
  • the thickness of the first jaw 2a is understood as the distance, in the direction of the blind rivet 4, between the edge of the oval-shaped orifice 52 and the end of an active part 22 of the first jaw 2a. in contact with one of the cables 3; and the thickness of the second jaw 2b is understood as the distance, in the direction of the blind rivet 4, between the engagement orifice 61 and the end of an active portion of the second jaw 2b in contact with the one of the cables 3.
  • the blind rivet To reach the set state, the blind rivet must contract a length equal to the sum of the flattening of the cables 3 under the effect of their clamping between the jaws 2a and 2b, the penetration depth of the active parts. 22 of the first jaw 2a in the cables 3, the penetration depth of the active parts 22 of the second jaw 2b in the cables 3 and the depth of engagement of the head 42 of the nail 40 in the body 44 of the drum 43.
  • the blind rivet 4 is in the crimped state and the connector 1 is in the service position.
  • the cradles 54a, 54b, 54c and 54d then cover the active parts 22 around their respective point of penetration in the cables 3.
  • the active parts 22 are then on the one hand isolated from any moisture present in the environment of the connector 1, on the other hand electrically insulated from the outside of the connector.
  • the diameter of the bore 33 of the housing 24 of the second jaw 2b is greater than the outer diameter of the body 44 of the barrel 43 of the blind rivet 4 in the crimped state.
  • the body 44 increases in width in the bore 33 or in the interstice between the jaws 2a, 2b.
  • the housing 24 of the jaw 2a widens to reach the end face 27 through the oval-shaped orifice 52.
  • This flared shape is provided for the jaw 2a to tilt. in a configuration where the electric cables 3 would be of different diameters.
  • the head 45 of the barrel 43 engages on the periphery of one end of the oval-shaped orifice 52.
  • the connector 1 is provided for cables 3 which each have a section between 1.5 mm 2 and 25 mm 2 .
  • the body 41 of the nail 40 is dimensioned, for example by means of a calibrated frangible zone, to break under a tensile force of between 4500 N and 6500 N.
  • a rivet is for example a rivet whose shaft 43 is made of aluminum with the body which has an outer diameter of about 4.8 mm.
  • the movement of the jaws between the position of positioning of the cables ( figure 4 ) at the service position ( figure 5 ) is typically of the order of 11 mm.
  • the tensile force is at least 4500 N makes it possible to be sure that the jaws have sufficiently penetrated the cables.
  • the connector 1 is provided so that one of the cables 3 has a section of between 16 mm 2 and 95 mm 2 and for the other cable 3 has a section between 4 mm 2 and 35 mm 2 .
  • the body 41 of the nail 40 is dimensioned, for example by means of a calibrated frangible zone, to break under a tensile force of between 8500 N and 10500 N.
  • a rivet is for example a rivet whose shaft 43 is made of aluminum with the body which has an outer diameter of the order of 5.3 mm.
  • the movement of the jaws between the position of positioning of the cables ( figure 4 ) at the service position ( figure 5 ) is typically of the order of 13 mm.
  • the connector 1 is provided for cables 3 which each have a section of between 16 mm 2 and 95 mm 2 .
  • the body 41 of the nail 40 is dimensioned, for example by means of a calibrated frangible zone, to break under a tensile force of between 11000 N and 13000 N.
  • a rivet is for example a rivet whose shaft 43 is made of aluminum with the body which has an outer diameter of about 6.3 mm.
  • the movement of the jaws between the position of positioning of the cables ( figure 4 ) at the service position ( figure 5 ) is typically of the order of 13 mm.
  • the jaws 2a, 2b of the connector do not have a seal 23 and / or the number of contact members 21 is different from two, for example one or more than two.
  • the body 44 of the barrel 43 is preserti on assembly, that is to say that the bead 47 is primed.
  • the rivet 4 is thus captive.
  • the means of imperdability are different, for example a latching lug on the jaw 2b and a cavity formed externally in the body 44 of the barrel 43 to receive the latching lug.
  • the washer 28 constitutes a reinforcing member allowing the bead 47 to engage the jaw 2b.
  • the reinforcing member is different from the washer 28, with for example, a greater thickness in the center (around the engagement orifice 61) than at the periphery.
  • the side faces 26a, 26b of the two jaws 2a, 2b have no lug or stirrup.

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Insertion Pins And Rivets (AREA)

Abstract

The connector (1) has a tightening element i.e. blind rivet (4), for bringing two jaws (2a, 2b) closer together. Each jaw has a conductive contact element (21) with two active parts (22) projecting from a receiving face of a stiff insulating body (20) so as to penetrate conductive cores (30) of two electrical cables, respectively. The rivet is configured such that a shank of the rivet contracts in an axial direction between cable installation and in-service positions under the action of a mandrel of the rivet, and the mandrel breaks when the jaws are brought closer together by a preset stroke.

Description

L'invention a trait aux connecteurs pour relier l'un à l'autre deux câbles électriques.The invention relates to connectors for connecting two electric cables to one another.

On connaît déjà, notamment par la demande de brevet français 2 762 449 , un tel connecteur pour relier l'un à l'autre deux câbles électriques, typiquement des câbles formés par une âme conductrice et une gaine isolante, un tel connecteur opérant à la fois un raccordement électrique et un raccordement mécanique des deux câbles.We already know, especially by the French patent application 2,762,449 such a connector for connecting two electrical cables to one another, typically cables formed by a conductive core and an insulating sheath, such a connector operating both an electrical connection and a mechanical connection of the two cables.

Le connecteur décrit par ce document comporte : deux mâchoires et un couple vis/écrou pour rapprocher l'une de l'autre lesdites mâchoires, chaque dite mâchoire comportant un corps en matière isolante rigide et un organe de contact conducteur présentant deux parties actives saillant chacune d'une face de réception du corps respectivement pour pénétrer dans l'âme conductrice d'un câble et dans l'âme conductrice de l'autre câble, chaque face de réception du corps de chaque mâchoire étant en regard de la face de réception du corps de l'autre mâchoire avec chaque partie active de l'organe de contact d'une mâchoire au droit d'une partie active de l'organe de contact de l'autre mâchoire, ledit connecteur admettant une position de mise en place des câbles entre les faces de réception des mâchoires avec chaque partie active d'un organe de contact au droit d'un câble et admettant une position de service où les câbles sont pris en sandwich entre les mâchoires avec chaque partie active qui a pénétré dans une âme conductrice d'un câble respectif, ledit connecteur étant configuré pour passer de la position de mise en place des câbles à la position de service par rapprochement des mâchoires, avec le couple vis/écrou, d'une course prédéterminée.The connector described by this document comprises: two jaws and a screw / nut pair to bring said jaws closer to each other, each said jaw comprising a body of rigid insulating material and a conductive contact member having two active parts projecting each a receiving face of the body respectively to penetrate the conductive core of a cable and the conductive core of the other cable, each receiving face of the body of each jaw being opposite the receiving face of the body of the other jaw with each active part of the contact member of a jaw to the right of an active part of the contact member of the other jaw, said connector admitting a positioning position of the cables between the receiving faces of the jaws with each active part of a contact member to the right of a cable and admitting a service position where the cables are sandwiched between the jaws with each other an active part which has penetrated into a conductive core of a respective cable, said connector being configured to pass from the position of placing the cables to the service position by bringing the jaws closer together with the screw / nut couple, a predetermined race.

On connaît encore notamment par la demande de brevet français 2 760 570 un connecteur similaire dans lequel la vis du couple vis/écrou possède une tête autosécable calculée pour rompre lorsqu'un couple de serrage prédéterminé est atteint. Cela évite de sectionner les câbles en serrant les mâchoires trop fort l'une contre l'autre. Cela assure en outre un certain degré d'inviolabilité du connecteur lorsqu'il est en place.We still know in particular by the French patent application 2,760,570 a similar connector in which the screw of the screw / nut couple has a self-breaking head calculated to break when a predetermined tightening torque is reached. This avoids cutting the cables by tightening the jaws too hard against each other. This further ensures a certain degree of tamper resistance of the connector when in place.

L'invention vise à fournir un connecteur semblable simple, commode et économique.The invention aims to provide a similar connector simple, convenient and economical.

L'invention propose à cet effet un connecteur pour relier l'un à l'autre deux câbles électriques, comportant deux mâchoires et un organe de serrage pour rapprocher l'une de l'autre lesdites mâchoires, chaque dite mâchoire comportant un corps en matière isolante rigide et un organe de contact conducteur présentant deux parties actives saillant chacune d'une face de réception du corps respectivement pour pénétrer dans l'âme conductrice d'un câble et dans l'âme conductrice de l'autre câble, la face de réception du corps de chaque mâchoire étant en regard de la face de réception du corps de l'autre mâchoire avec chaque partie active de l'organe de contact d'une mâchoire au droit d'une partie active de l'organe de contact de l'autre mâchoire, ledit connecteur étant configuré pour prendre une position de mise en place des câbles entre les faces de réception des mâchoires avec chaque partie active d'un organe de contact au droit d'un câble, pour prendre une position de service où les câbles sont pris en sandwich entre les mâchoires avec chaque partie active de chaque organe de contact qui a pénétré dans une âme conductrice d'un câble respectif, et pour passer de la position de mise en place des câbles à la position de service par rapprochement des mâchoires, avec l'organe de serrage, d'une course prédéterminée ;
caractérisé en ce que ledit organe de serrage est un rivet aveugle comportant un fût et un clou, lequel rivet aveugle est configuré pour que le fût se contracte selon la direction axiale, sous l'action du clou, entre la position de mise en place des câbles et la position de service, et configuré pour que le clou rompe lorsque lesdites mâchoires se sont rapprochées de ladite course prédéterminée.The invention proposes for this purpose a connector for connecting two electric cables to each other, comprising two jaws and a clamping member for bringing said jaws closer to each other, each said jaw comprising a body made of material rigid insulator and a conductive contact member having two active parts each projecting from a receiving face of the body respectively to penetrate into the conductive core of one cable and into the conductive core of the other cable, the receiving face. the body of each jaw being opposite the receiving face of the body of the other jaw with each active part of the contact member of a jaw to the right of an active part of the contact member of the another jaw, said connector being configured to take a position of placing the cables between the receiving faces of the jaws with each active part of a contact member to the right of a cable, to take a positi in use where the cables are sandwiched between the jaws with each active part of each contact member which has penetrated into a conductive core of a respective cable, and to move from the position of placing the cables to the position service by approximation of the jaws, with the clamping member, a predetermined stroke;
characterized in that said clamping member is a blind rivet having a barrel and a nail, which blind rivet is configured so that the barrel contracts in the axial direction, under the action of the nail, between the position of placement of the cables and the service position, and configured so that the nail breaks when said jaws are closer to said predetermined stroke.

Ainsi, l'organe de serrage du connecteur selon l'invention n'est pas un couple vis/écrou mais un rivet aveugle.Thus, the clamping member of the connector according to the invention is not a torque screw / nut but a blind rivet.

Lors du passage de la position de mise en place des câbles à la position de service, le rivet aveugle entraîne les mâchoires l'une vers l'autre pour les faire pénétrer dans les câbles.When moving from the position of placing the cables to the service position, the blind rivet drives the jaws towards one another to make them penetrate the cables.

Bien qu'il paraisse surprenant qu'un rivet aveugle puisse avoir une fonction d'entraînement des mâchoires, les essais menés par la demanderesse ont révélé qu'un rivet aveugle est capable de fournir à la fois la course et l'effort requis pour que les mâchoires pénètrent dans les câbles et pour que la rupture du clou intervienne exactement lorsque la profondeur de pénétration requise dans les câbles a été atteinte.While it is surprising that a blind rivet may have a jaw training function, the Applicant's tests have shown that a blind rivet is capable of providing both the stroke and the effort required for the jaws penetrate the cables and the failure of the nail occurs exactly when the penetration depth required in the cables has been reached.

On observera au surplus qu'un rivet aveugle est particulièrement économique et commode d'emploi tandis qu'il offre une excellente garantie d'inviolabilité.In addition, it is observed that a blind rivet is particularly economical and convenient to use while it offers an excellent guarantee of inviolability.

Selon des caractéristiques préférées pour des raisons de simplicité, de commodité et d'économie :

  • ledit fût comporte une tête en regard d'une face d'extrémité d'une première dite mâchoire tandis que ledit clou présente une tête du côté de l'extrémité dudit fût opposée à ladite tête, avec ledit fût qui comporte un corps engagé dans un logement de la première mâchoire s'étendant de ladite face d'extrémité à ladite face de réception et dans un logement de ladite deuxième mâchoire s'étendant de ladite face de réception à une face d'extrémité opposée à la face de réception, ledit corps émergeant de ladite deuxième mâchoire au travers d'un orifice de prise d'un bourrelet que présente ledit fût dans ladite position de service ;
  • ledit orifice de prise est délimité par un organe de renforcement rapporté sur le corps de ladite deuxième mâchoire ;
  • ledit organe de renforcement est une rondelle métallique engagée au fond d'un lamage que comporte ledit logement de ladite deuxième mâchoire ;
  • dans ladite position de mise en place des câbles, au moins une portion dudit logement de ladite deuxième mâchoire est d'un diamètre plus grand que le diamètre du corps du fût pour permettre audit corps de gagner en largeur dans ladite portion lors du passage de la position de mise en place des câbles à la position de service ;
  • le connecteur comporte, dans un état prêt à l'emploi, des moyens d'imperdabilité dudit rivet ;
  • lesdits moyens d'imperdabilité sont formés par un bourrelet dudit corps dudit fût, amorcé par ladite tête dudit clou ;
  • ledit connecteur est configuré pour que lesdits deux câbles électriques aient chacun une section comprise entre 1,5 mm2 et 25 mm2 avec ledit clou qui est configuré pour rompre lorsqu'il est soumis à un effort de traction compris entre 4500 N et 6500 N ;
  • ledit connecteur est configuré pour que lesdits deux câbles électriques aient chacun une section comprise entre 16 mm2 et 95 mm2 avec ledit clou qui est configuré pour rompre lorsqu'il est soumis à un effort de traction compris entre 11000 N et 13000 N ; et/ou
  • ledit connecteur est configuré pour qu'un premier desdits deux câbles électriques ait une section comprise entre 16 mm2 et 95 mm2 et que le second desdits deux câbles ait une section comprise entre 4 mm2 et 35 mm2 avec ledit clou qui est configuré pour rompre lorsqu'il est soumis à un effort de traction compris entre 8500 N et 10500 N.
According to preferred features for reasons of simplicity, convenience and economy:
  • said barrel comprises a head facing an end face of a first said jaw while said nail has a head on the side of the end of said barrel opposite said head, with said barrel which comprises a body engaged in a housing the first jaw extending from said end face to said receiving face and into a housing of said second jaw extending from said receiving face to an end face opposite to the receiving face, said body emerging from said second jaw through a bead engagement port provided by said barrel in said service position;
  • said engagement port is delimited by a reinforcing member attached to the body of said second jaw;
  • said reinforcing member is a metal washer engaged at the bottom of a countersink that includes said housing of said second jaw;
  • in said position of placing the cables, at least a portion of said housing of said second jaw is of a diameter greater than the diameter of the barrel body to allow said body to gain in width in said portion when passing from the position of placing the cables to the service position;
  • the connector comprises, in a ready-to-use state, captive means of said rivet;
  • said means of imperceptibility are formed by a bead of said body of said barrel, initiated by said head of said nail;
  • said connector is configured so that said two electrical cables each have a section between 1.5 mm 2 and 25 mm 2 with said nail which is configured to break when subjected to a tensile force of between 4500 N and 6500 N ;
  • said connector is configured so that said two electrical cables each have a section of between 16 mm 2 and 95 mm 2 with said nail which is configured to break when subjected to a tensile force of between 11000 N and 13000 N; and or
  • said connector is configured so that a first of said two electrical cables has a section of between 16 mm 2 and 95 mm 2 and the second of said two cables has a section of between 4 mm 2 and 35 mm 2 with said nail which is configured to break when subjected to a traction force of between 8500 N and 10500 N.

On va maintenant poursuivre l'exposé de l'invention par la description détaillée d'un exemple de réalisation, donnée ci-après à titre illustratif et non limitatif, en référence aux dessins annexés, sur lesquels :

  • la figure 1 est une vue en perspective éclatée d'un connecteur selon l'invention et de deux câbles à connecter ;
  • les figures 2 et 3 sont des vues en perspective des mâchoires du connecteur prises isolément, montrant leur face de réception ;
  • la figure 4 est une vue en coupe brisée, suivant le plan brisé repéré par IV-IV à la figure 2, du connecteur et des deux câbles à connecter dans la position de mise en place des câbles ; et
  • la figure 5 est une vue similaire à la figure 4, dans la position de service.
We will now continue the disclosure of the invention by the detailed description of an exemplary embodiment, given below by way of illustration and not limitation, with reference to the accompanying drawings, in which:
  • the figure 1 is an exploded perspective view of a connector according to the invention and two cables to be connected;
  • the Figures 2 and 3 are perspective views of the connector jaws taken in isolation, showing their receiving face;
  • the figure 4 is a broken sectional view, following the broken plane identified by IV-IV at figure 2 , the connector and the two cables to be connected in the positioning position of the cables; and
  • the figure 5 is a view similar to the figure 4 , in the service position.

Le connecteur 1 représenté aux figures 1 à 5 vise à connecter électriquement deux câbles 3 entre eux.The connector 1 represented in Figures 1 to 5 aims to electrically connect two cables 3 between them.

Ce connecteur 1 comporte une première mâchoire 2a, une deuxième mâchoire 2b et un rivet aveugle 4.This connector 1 comprises a first jaw 2a, a second jaw 2b and a blind rivet 4.

Chaque mâchoire 2a, 2b comporte un corps 20, deux organes de contact conducteurs 21 et une garniture d'étanchéité 23.Each jaw 2a, 2b comprises a body 20, two conductive contact members 21 and a gasket 23.

Chaque corps 20 est en matière isolante rigide. Il se présente sous la forme d'une coque ayant une face de réception 25, une face d'extrémité 27 opposée à la face de réception 25 et quatre faces latérales 26a, 26b, 26c, 26d s'étendant chacune de la face de réception 25 à la face d'extrémité 27. Parmi celles-ci, une première face latérale 26a est opposée à une deuxième face latérale 26b.Each body 20 is made of rigid insulating material. It is in the form of a shell having a receiving face 25, an end face 27 opposite to the receiving face 25 and four side faces 26a, 26b, 26c, 26d each extending from the receiving face. 25 to the end face 27. Of these, a first side face 26a is opposed to a second side face 26b.

La face de réception 25 présente deux gouttières 32 s'étendant de la face 26a à la face 26b.The receiving face 25 has two gutters 32 extending from the face 26a to the face 26b.

Chaque corps 20 est traversé par un logement 24 débouchant d'une part sur la face d'extrémité 27et d'autre part sur la face de réception 25, entre les deux gouttières 32.Each body 20 is traversed by a housing 24 opening on the one hand on the end face 27 and on the other side on the receiving face 25, between the two gutters 32.

Sur le corps 20 de la première mâchoire 2a, un ergot 50 saille de chaque face latérale 26a, 26b. Chaque ergot 50 se situe à la jonction de la face latérale 26a, 26b correspondante avec la face de réception 25, entre les extrémités des gouttières 32 (voir figure 3).On the body 20 of the first jaw 2a, a lug 50 protrudes from each side face 26a, 26b. Each lug 50 is located at the junction of the corresponding lateral face 26a, 26b with the receiving face 25, between the ends of the gutters 32 (see FIG. figure 3 ).

Sur le corps 20 de la deuxième mâchoire 2b, entre les extrémités des gouttières 32, pour chacune des faces latérales 26a et 26b, en débord de ces faces, une paroi latérale 51 s'étend vers l'opposé de la face de réception 25. Ici, chaque paroi 51 est en forme d'étrier dont les extrémités sont situées à la jonction de la face de réception 25 et la face latérale 26a ou 26b correspondante (voir figure 2).On the body 20 of the second jaw 2b, between the ends of the gutters 32, for each of the side faces 26a and 26b, overlying these faces, a side wall 51 extends towards the opposite of the receiving face 25. Here, each wall 51 is in the form of a stirrup whose ends are located at the junction of the receiving face 25 and the corresponding lateral face 26a or 26b (see FIG. figure 2 ).

Le logement 24 de la première mâchoire 2a débouche sur la face de réception 25 par un orifice à contour circulaire 53 et sur la face d'extrémité 27 par un orifice 52 à contour ovale.The housing 24 of the first jaw 2a opens on the receiving face 25 by a circular contour orifice 53 and on the end face 27 by an orifice 52 with an oval contour.

Le logement 24 de la deuxième mâchoire 2b présente deux portions cylindriques. Une première portion du logement 24 est un alésage 33 qui débouche sur la face de réception 25. L'autre portion du logement 24 est un lamage 29 de diamètre supérieur à celui de l'alésage 33. Ce lamage 29 débouche sur la face d'extrémité 27 par un orifice de contour circulaire 60.The housing 24 of the second jaw 2b has two cylindrical portions. A first portion of the housing 24 is a bore 33 which opens out on the receiving face 25. The other portion of the housing 24 is a countersink 29 of diameter greater than that of the bore 33. This countersink 29 opens on the end face 27 by a circular contour orifice 60.

Une rondelle métallique 28 est rapportée au fond du lamage 29. Ici, la rondelle 28 est rendue solidaire du corps 20 du fait qu'elle est engagée à force dans le lamage 29. En variante, la rondelle métallique 28 est maintenue par d'autres moyens, par exemple par encliquetage.A metal washer 28 is attached to the bottom of the countersink 29. Here, the washer 28 is secured to the body 20 because it is engaged by force in the countersink 29. Alternatively, the metal washer 28 is maintained by others means, for example by snapping.

Chaque organe de contact 21 est une fine plaque de métal en U comportant une branche centrale et deux branches distales. Les branches distales comportent chacune une partie active 22 en leur extrémité. Chaque partie active 22 comporte ici trois dents pointues disposées côte-à-côte. En variante, le nombre de dents est différent de trois, par exemple deux dents ou davantage que trois dents.Each contact member 21 is a thin U-shaped metal plate having a central branch and two distal branches. The distal branches each comprise an active portion 22 at their end. Each active part 22 here comprises three pointed teeth arranged side by side. Alternatively, the number of teeth is different from three, for example two teeth or more than three teeth.

Chaque garniture d'étanchéité 23 comporte deux enveloppes 55a et 55b chacune prévue pour recevoir l'un des organes de contact 21, en ne laissant émerger que les parties actives 22, au travers respectivement d'un berceau 54a, 54b, 54c ou 54d en forme d'arc.Each gasket 23 comprises two envelopes 55a and 55b each designed to receive one of the contact members 21, leaving only the active portions 22 emerge, through a cradle 54a, 54b, 54c or 54d respectively. bow shape.

Chaque enveloppe 55a et 55b comprend deux flasques côte-à-côte délimitant un logement médian 58 où prend place un organe de contact 21 par un orifice 59 opposé aux berceaux 54a et 54b ou 54c et 54d.Each envelope 55a and 55b comprises two side-by-side flanges delimiting a median housing 58 where a contact member 21 is placed by an orifice 59 opposite the cradles 54a and 54b or 54c and 54d.

Les enveloppes 55a et 55b sont reliées par des pontets 56a et 56b en forme de tuile disposés respectivement entre les berceaux 54b et 54c et entre les berceaux 54a et 54d. Ici, une protubérance 57 saille de chacun des pontets 56a et 56b à l'écart et en regard des enveloppes 55a et 55b. En variante, les garnitures d'étanchéité 23 ne comportent aucune protubérance telle que 57.The envelopes 55a and 55b are connected by tile-shaped bridges 56a and 56b respectively arranged between the cradles 54b and 54c and between the cradles 54a and 54d. Here, a protrusion 57 protrudes from each of the bridges 56a and 56b apart and facing the envelopes 55a and 55b. In a variant, the seals 23 have no protuberance such as 57.

Les câbles 3 sont ici de type conventionnel, comportant chacun une âme conductrice 30 et une gaine isolante 31.The cables 3 are here of conventional type, each comprising a conductive core 30 and an insulating sheath 31.

Le rivet aveugle 4 comporte un clou 40 et un fût 43 creux. Le clou 40 présente un corps 41 et une tête 42. Le fût 43 présente un corps 44 et une tête 45. Le rivet aveugle 4 est configuré pour passer d'un état à sertir (figure 4) à un état serti (figure 5).The blind rivet 4 comprises a nail 40 and a hollow shaft 43. The nail 40 has a body 41 and a head 42. The shaft 43 has a body 44 and a head 45. The blind rivet 4 is configured to move from a crimped state ( figure 4 ) to a crimped state ( figure 5 ).

A l'état à sertir du rivet aveugle 4, le corps 41 du clou 40 est engagé dans le corps 44 du fût 43 et dépasse du corps 44 du côté de la tête 45. La tête 42 du clou 40 est contre l'extrémité du corps 44 opposée à la tête 45.In the crimped state of the blind rivet 4, the body 41 of the nail 40 is engaged in the body 44 of the barrel 43 and protrudes from the body 44 on the side of the head 45. The head 42 of the nail 40 is against the end of the body 44 opposite the head 45.

A l'état serti, la tête 42 est engagée à force dans le corps 44, le corps 44 présente un bourrelet 47 autour de la tête 42 et le clou 40 est sectionné en une zone de rupture 46.In the crimped state, the head 42 is forcibly engaged in the body 44, the body 44 has a bead 47 around the head 42 and the nail 40 is cut into a rupture zone 46.

Ici, le fût 43 est en métal facilement déformable, par exemple en aluminium, en inox ou en cuivre recuit. Le clou 40 est en matériau peu déformable, par exemple en acier dur. Pour calibrer l'effort de rupture du clou 40, le corps 41 présente une striction (non représentée) de conformation prédéterminée.Here, the shaft 43 is made of easily deformable metal, for example aluminum, stainless steel or annealed copper. The nail 40 is of low deformable material, for example hard steel. To calibrate the breaking force of the nail 40, the body 41 has a necking (not shown) of predetermined conformation.

Le montage du connecteur 1 est décrit ci-après.The mounting of the connector 1 is described below.

Les garnitures d'étanchéité 23 renfermant les organes de contact 21 sont montées à force chacune dans le corps 20 de la mâchoire 2a ou 2b correspondante. Chaque garniture d'étanchéité 23 est complémentaire d'une cavité sur le corps 20 respectif.The seals 23 enclosing the contact members 21 are each forced into the body 20 of the corresponding jaw 2a or 2b. Each seal 23 is complementary to a cavity on the respective body 20.

Une fois que les mâchoires 2a et 2b sont assemblées, les berceaux 54a, 54b, 54c, 54d, et donc les parties actives 22, saillent dans les gouttières 32 respectives. La courbure des berceaux 54a, 54b, 54c, 54d suit celle des gouttières 32.Once the jaws 2a and 2b are assembled, the cradles 54a, 54b, 54c, 54d, and therefore the active portions 22, project into the respective gutters 32. The curvature of the cradles 54a, 54b, 54c, 54d follows that of the gutters 32.

Les mâchoires 2a et 2b sont disposées avec les faces de réception 25 l'une en face de l'autre. De plus, les ergots 50 viennent se loger dans les étriers 51, retenant les mâchoires 2a, 2b l'une avec l'autre tout en leur permettant de se rapprocher ou de s'écarter à l'intérieur d'une plage prédéfinie.The jaws 2a and 2b are arranged with the receiving faces 25 facing each other. In addition, the lugs 50 are housed in the stirrups 51, holding the jaws 2a, 2b with each other while allowing them to move closer or move away within a predefined range.

Le rivet aveugle 4 à l'état à sertir est inséré par la tête 42 dans l'orifice à contour ovale 52 pour ressortir par l'orifice 60. Le rivet aveugle 4 est inséré légèrement à force au travers de la rondelle 28. Le connecteur est alors dans un état prêt à l'emploi.The blind rivet 4 in the crimped state is inserted by the head 42 in the oval-shaped orifice 52 to exit through the orifice 60. The blind rivet 4 is inserted slightly forcibly through the washer 28. The connector is then in a ready-to-use state.

Dans cet état prêt à l'emploi, les mâchoires 2a, 2b peuvent être rapprochées ou écartées l'une de l'autre avec le rivet aveugle 4 qui reste en place.In this ready-to-use state, the jaws 2a, 2b can be moved closer together or apart from each other with the blind rivet 4 which remains in place.

Le corps 44 du fût 43 est configuré pour dépasser de la rondelle 28 lorsque les mâchoires 2a, 2b sont écartées de la plus grande épaisseur prévue pour les câbles 3 et que la tête 45 vient en appui sur la face d'extrémité 27 de la mâchoire 2a. Dans la position d'écartement maximum des mâchoires 2a et 2b fixé par la venue en butée des ergots 50 contre le fond de la lumière délimitée par la paroi 51 correspondante, le fût 44 est encore en contact avec la rondelle 28.The body 44 of the barrel 43 is configured to protrude from the washer 28 when the jaws 2a, 2b are separated by the greatest thickness provided for the cables 3 and that the head 45 bears on the end face 27 of the jaw 2a. In the position of maximum separation of the jaws 2a and 2b fixed by the abutment of the lugs 50 against the bottom of the light defined by the corresponding wall 51, the barrel 44 is still in contact with the washer 28.

Pour opérer la connexion entre les câbles 3 avec le connecteur 1, on introduit les câbles 3 latéralement dans les gouttières 32. Suivant le diamètre des câbles 3 et si désiré, on peut rapprocher manuellement les deux mâchoires 2a, 2b pour mettre les parties actives 22 respectives en contact avec les câbles 3. Le connecteur 1 est alors en position de mise en place des câbles (figure 4).To make the connection between the cables 3 with the connector 1, the cables 3 are introduced laterally into the gutters 32. Depending on the diameter of the cables 3 and if desired, the two jaws 2a, 2b can be brought closer manually to put the active parts 22 in contact with the cables 3. The connector 1 is then in position for placing the cables ( figure 4 ).

En position de service (figure 5), les mâchoires 2a, 2b sont maintenues contre les câbles 3 par le rivet aveugle 4 à son état serti, la tête 45 du fût 43 étant en prise sur la face d'extrémité 27 de la première mâchoire 2a et le bourrelet 47 étant en prise sur la face extérieure de la rondelle 28. Les câbles 3 sont pris en sandwich entre les mâchoires 2a, 2b. Les parties actives 22 sont insérées dans l'âme conductrice 30 des câbles électriques 3, à travers la gaine isolante 31, et assurent ainsi la connexion électrique des câbles 3 entre eux.In service position ( figure 5 ), the jaws 2a, 2b are held against the cables 3 by the blind rivet 4 in its crimped state, the head 45 of the barrel 43 being engaged on the end face 27 of the first jaw 2a and the bead 47 being in the cables 3 are sandwiched between the jaws 2a, 2b. The active parts 22 are inserted into the conductive core 30 of the electric cables 3, through the insulating sheath 31, and thus provide the electrical connection of the cables 3 between them.

Pour passer de la position de mise en place des câbles à la position de service, le rivet aveugle 4 est serti à l'aide d'une pince à riveter (non représentée). La pince à riveter est de type classique comportant un mandrin. Le mandrin se place autour du corps 41 du clou 40. Il est mobile par rapport à une butée qui vient en appui sur la tête 45 du fût 43. Par actionnement de la pince à riveter, le corps 41 est soumis par le mandrin à une traction ou à une série de tractions, amenant ainsi le rivet aveugle 4 de l'état à sertir à l'état serti.To move from the setting position of the cables to the service position, the blind rivet 4 is crimped using a rivet pliers (not shown). The rivet clamp is of conventional type comprising a mandrel. The mandrel is placed around the body 41 of the nail 40. It is movable relative to a stop that bears on the head 45 of the barrel 43. By actuation of the rivet pliers, the body 41 is subjected by the mandrel to a traction or a series of pulls, thus bringing the blind rivet 4 of the state to crimp in the crimped state.

Pendant la transition entre l'état à sertir et l'état serti, successivement :

  • la tête 42 du clou 40 déforme localement le corps 44 du fût 43 ; le bourrelet 47 apparait,
  • le bourrelet 47 vient en prise sur le pourtour de l'orifice de prise 61 de la rondelle 28 et la tête 45 du fût 43 vient en prise sur la face d'extrémité 27 de la première mâchoire 2a,
  • les deux mâchoires 2a, 2b se rapprochent l'une de l'autre,
  • les parties actives 22 pénètrent dans la gaine isolante 31 puis dans l'âme conductrice 30 des câbles, la résistance de serrage augmentant à mesure que les parties actives 22 pénètrent dans les câbles 3, et
  • le corps 41 du clou 40 rompt lorsque la résistance de serrage a atteint un seuil déterminé correspondant à la profondeur de pénétration souhaitée.
During the transition between the crimped state and the crimped state, successively:
  • the head 42 of the nail 40 locally deforms the body 44 of the barrel 43; the bead 47 appears,
  • the bead 47 engages the periphery of the engagement orifice 61 of the washer 28 and the head 45 of the barrel 43 engages on the end face 27 of the first jaw 2a,
  • the two jaws 2a, 2b are close to one another,
  • the active parts 22 penetrate into the insulating sheath 31 and then into the conductive core 30 of the cables, the tightening resistance increasing as the active parts 22 penetrate the cables 3, and
  • the body 41 of the nail 40 breaks when the tightening resistance has reached a determined threshold corresponding to the desired depth of penetration.

La profondeur de pénétration des parties actives 22 dans l'âme conductrice 30 des câbles est déterminante pour la qualité de la connexion électrique entre les câbles 3 et pour préserver l'intégrité des câbles 3. Le rivet aveugle 4 est donc choisi pour parvenir à son état serti lorsque la profondeur de pénétration souhaitée est atteinte.The depth of penetration of the active parts 22 in the conductive core 30 of the cables is decisive for the quality of the electrical connection between the cables 3 and to preserve the integrity of the cables 3. The blind rivet 4 is therefore chosen to achieve its Crimped state when the desired penetration depth is reached.

Lorsque le rivet aveugle 4 est à l'état à sertir, le fût 43 a une longueur initiale supérieure à la somme de l'épaisseur de la première mâchoire 2a, de l'épaisseur des câbles 3, de l'épaisseur de la deuxième mâchoire 2b et de la hauteur de la tête 42 du clou 40.When the blind rivet 4 is in the crimped state, the barrel 43 has an initial length greater than the sum of the thickness of the first jaw 2a, the thickness of the cables 3, the thickness of the second jaw 2b and the height of the head 42 of the nail 40.

Ici l'épaisseur de la première mâchoire 2a s'entend comme la distance, selon la direction du rivet aveugle 4, entre le bord de l'orifice à contour ovale 52 et l'extrémité d'une partie active 22 de la première mâchoire 2a en contact avec l'un des câbles 3 ; et l'épaisseur de la deuxième mâchoire 2b s'entend comme la distance, selon la direction du rivet aveugle 4, entre l'orifice de prise 61 et l'extrémité d'une partie active de la deuxième mâchoire 2b en contact avec l'un des câbles 3.Here the thickness of the first jaw 2a is understood as the distance, in the direction of the blind rivet 4, between the edge of the oval-shaped orifice 52 and the end of an active part 22 of the first jaw 2a. in contact with one of the cables 3; and the thickness of the second jaw 2b is understood as the distance, in the direction of the blind rivet 4, between the engagement orifice 61 and the end of an active portion of the second jaw 2b in contact with the one of the cables 3.

Pour atteindre l'état serti, le rivet aveugle doit se contracter d'une longueur égale à la somme de l'aplatissement des câbles 3 sous l'effet de leur serrage entre les mâchoires 2a et 2b, de la profondeur de pénétration des parties actives 22 de la première mâchoire 2a dans les câbles 3, de la profondeur de pénétration des parties actives 22 de la deuxième mâchoire 2b dans les câbles 3 et de la profondeur d'engagement de la tête 42 du clou 40 dans le corps 44 du fût 43.To reach the set state, the blind rivet must contract a length equal to the sum of the flattening of the cables 3 under the effect of their clamping between the jaws 2a and 2b, the penetration depth of the active parts. 22 of the first jaw 2a in the cables 3, the penetration depth of the active parts 22 of the second jaw 2b in the cables 3 and the depth of engagement of the head 42 of the nail 40 in the body 44 of the drum 43.

Une fois le clou 40 rompu, le rivet aveugle 4 est à l'état serti et le connecteur 1 est en position de service. Les berceaux 54a, 54b, 54c et 54d recouvrent alors les parties actives 22 autour de leur point de pénétration respectif dans les câbles 3. Les parties actives 22 sont alors d'une part isolées de toute humidité présente dans l'environnement du connecteur 1, d'autre part isolées électriquement de l'extérieur du connecteur.Once the nail 40 is broken, the blind rivet 4 is in the crimped state and the connector 1 is in the service position. The cradles 54a, 54b, 54c and 54d then cover the active parts 22 around their respective point of penetration in the cables 3. The active parts 22 are then on the one hand isolated from any moisture present in the environment of the connector 1, on the other hand electrically insulated from the outside of the connector.

Il est à noter que le diamètre de l'alésage 33 du logement 24 de la deuxième mâchoire 2b est supérieur au diamètre extérieur du corps 44 du fût 43 du rivet aveugle 4 à l'état à sertir. Ainsi, lors du passage du rivet aveugle 4 à l'état serti, le corps 44 gagne en largeur dans l'alésage 33 ou dans l'interstice entre les mâchoires 2a, 2b.It should be noted that the diameter of the bore 33 of the housing 24 of the second jaw 2b is greater than the outer diameter of the body 44 of the barrel 43 of the blind rivet 4 in the crimped state. Thus, during the passage of the blind rivet 4 crimped state, the body 44 increases in width in the bore 33 or in the interstice between the jaws 2a, 2b.

On observera que le logement 24 de la mâchoire 2a s'étend en s'élargissant jusqu'à déboucher sur la face d'extrémité 27 par l'orifice à contour ovale 52. Cette forme évasée est prévue pour que la mâchoire 2a s'incline dans une configuration où les câbles électriques 3 seraient de diamètres différents. Dans une telle mise en oeuvre (non illustrée), la tête 45 du fût 43 vient en prise sur le pourtour d'une extrémité de l'orifice à contour ovale 52.It will be observed that the housing 24 of the jaw 2a widens to reach the end face 27 through the oval-shaped orifice 52. This flared shape is provided for the jaw 2a to tilt. in a configuration where the electric cables 3 would be of different diameters. In such an implementation (not shown), the head 45 of the barrel 43 engages on the periphery of one end of the oval-shaped orifice 52.

Dans l'exemple illustré, le connecteur 1 est prévu pour des câbles 3 qui ont chacun une section comprise entre 1,5 mm2 et 25 mm2. Le corps 41 du clou 40 est dimensionné, par exemple grâce à une zone frangible calibrée, pour rompre sous un effort de traction compris entre 4500 N et 6500 N. Un tel rivet est par exemple un rivet dont le fût 43 est en aluminium avec le corps qui présente un diamètre extérieur de l'ordre de 4,8 mm. La course de rapprochement des mâchoires entre la position de mise en place des câbles (figure 4) à la position de service (figure 5) est typiquement de l'ordre de 11 mm.In the example shown, the connector 1 is provided for cables 3 which each have a section between 1.5 mm 2 and 25 mm 2 . The body 41 of the nail 40 is dimensioned, for example by means of a calibrated frangible zone, to break under a tensile force of between 4500 N and 6500 N. Such a rivet is for example a rivet whose shaft 43 is made of aluminum with the body which has an outer diameter of about 4.8 mm. The movement of the jaws between the position of positioning of the cables ( figure 4 ) at the service position ( figure 5 ) is typically of the order of 11 mm.

Le fait que l'effort de traction soit au moins égal à 4500 N permet d'être sûr que les mâchoires ont suffisamment pénétré dans les câbles. Le fait que l'effort de traction soit au plus égal à 6500 N permet d'être sûr que les mâchoires n'ont pas pénétré trop profondément dans les câbles.The fact that the tensile force is at least 4500 N makes it possible to be sure that the jaws have sufficiently penetrated the cables. The fact that the tensile force is at most equal to 6500 N makes it possible to be sure that the jaws have not penetrated too deeply into the cables.

Dans une autre version, le connecteur 1 est prévu pour que l'un des câbles 3 ait une section comprise entre 16 mm2 et 95 mm2 et pour que l'autre câble 3 ait une section comprise entre 4 mm2 et 35 mm2. Le corps 41 du clou 40 est dimensionné, par exemple grâce à une zone frangible calibrée, pour rompre sous un effort de traction compris entre 8500 N et 10500 N. Un tel rivet est par exemple un rivet dont le fût 43 est en aluminium avec le corps qui présente un diamètre extérieur de l'ordre de 5,3 mm. La course de rapprochement des mâchoires entre la position de mise en place des câbles (figure 4) à la position de service (figure 5) est typiquement de l'ordre de 13 mm.In another version, the connector 1 is provided so that one of the cables 3 has a section of between 16 mm 2 and 95 mm 2 and for the other cable 3 has a section between 4 mm 2 and 35 mm 2 . The body 41 of the nail 40 is dimensioned, for example by means of a calibrated frangible zone, to break under a tensile force of between 8500 N and 10500 N. Such a rivet is for example a rivet whose shaft 43 is made of aluminum with the body which has an outer diameter of the order of 5.3 mm. The movement of the jaws between the position of positioning of the cables ( figure 4 ) at the service position ( figure 5 ) is typically of the order of 13 mm.

Dans une autre version, le connecteur 1 est prévu pour des câbles 3 qui ont chacun une section comprise entre 16 mm2 et 95 mm2. Le corps 41 du clou 40 est dimensionné, par exemple grâce à une zone frangible calibrée, pour rompre sous un effort de traction compris entre 11000 N et 13000 N. Un tel rivet est par exemple un rivet dont le fût 43 est en aluminium avec le corps qui présente un diamètre extérieur de l'ordre de 6,3 mm. La course de rapprochement des mâchoires entre la position de mise en place des câbles (figure 4) à la position de service (figure 5) est typiquement de l'ordre de 13 mm.In another version, the connector 1 is provided for cables 3 which each have a section of between 16 mm 2 and 95 mm 2 . The body 41 of the nail 40 is dimensioned, for example by means of a calibrated frangible zone, to break under a tensile force of between 11000 N and 13000 N. Such a rivet is for example a rivet whose shaft 43 is made of aluminum with the body which has an outer diameter of about 6.3 mm. The movement of the jaws between the position of positioning of the cables ( figure 4 ) at the service position ( figure 5 ) is typically of the order of 13 mm.

Dans une variante non illustrée, les mâchoires 2a, 2b du connecteur ne comportent pas de garniture d'étanchéité 23 et/ou le nombre d'organes de contact 21 est différent de deux, par exemple un seul ou davantage que deux.In a variant not shown, the jaws 2a, 2b of the connector do not have a seal 23 and / or the number of contact members 21 is different from two, for example one or more than two.

Dans une autre variante non illustrée, dans l'état prêt à l'emploi le corps 44 du fût 43 est préserti au montage, c'est-à-dire que le bourrelet 47 est amorcé. Le rivet 4 est ainsi imperdable. Dans une autre variante, les moyens d'imperdabilité sont différents, par exemple une patte d'encliquetage sur la mâchoire 2b et une cavité ménagée extérieurement dans le corps 44 du fût 43 pour recevoir la patte d'encliquetage.In another variant not shown, in the ready-to-use state, the body 44 of the barrel 43 is preserti on assembly, that is to say that the bead 47 is primed. The rivet 4 is thus captive. In another variant, the means of imperdability are different, for example a latching lug on the jaw 2b and a cavity formed externally in the body 44 of the barrel 43 to receive the latching lug.

On observera que la rondelle 28 constitue un organe de renforcement permettant au bourrelet 47 de se mettre en prise sur la mâchoire 2b. En variante, l'organe de renforcement est différent de la rondelle 28, avec par exemple une épaisseur plus importante au centre (autour de l'orifice de prise 61) qu'en périphérie.It will be observed that the washer 28 constitutes a reinforcing member allowing the bead 47 to engage the jaw 2b. In a variant, the reinforcing member is different from the washer 28, with for example, a greater thickness in the center (around the engagement orifice 61) than at the periphery.

Dans une variante non illustrée, les faces latérales 26a, 26b des deux mâchoires 2a, 2b n'ont pas d'ergot ni d'étrier.In a variant not shown, the side faces 26a, 26b of the two jaws 2a, 2b have no lug or stirrup.

De nombreuses autres variantes sont possibles en fonction des circonstances, et l'on rappelle à cet égard que l'invention ne se limite pas aux exemples décrits et représentés.Many other variants are possible depending on the circumstances, and it is recalled in this regard that the invention is not limited to the examples described and shown.

Claims (10)

Connecteur pour relier l'un à l'autre deux câbles électriques (3), comportant deux mâchoires (2a, 2b) et un organe de serrage (4) pour rapprocher l'une de l'autre lesdites mâchoires (2a, 2b), chaque dite mâchoire (2a, 2b) comportant un corps (20) en matière isolante rigide et un organe de contact (21) conducteur présentant deux parties actives (22) saillant chacune d'une face de réception (25) du corps (20) respectivement pour pénétrer dans l'âme conductrice (30) d'un câble (3) et dans l'âme conductrice (30) de l'autre câble (3), la face de réception (25) du corps (20) de chaque mâchoire (2a, 2b) étant en regard de la face de réception (25) du corps (20) de l'autre mâchoire (2a, 2b) avec chaque partie active (22) de l'organe de contact (21) d'une mâchoire (2a, 2b) au droit d'une partie active (22) de l'organe de contact (21) de l'autre mâchoire (2a, 2b), ledit connecteur étant configuré pour prendre une position de mise en place des câbles entre les faces de réception (25) des mâchoires (2a, 2b) avec chaque partie active (22) d'un organe de contact (21) au droit d'un câble (3), pour prendre une position de service où les câbles (3) sont pris en sandwich entre les mâchoires (2a, 2b) avec chaque partie active (22) de chaque organe de contact (21) qui a pénétré dans une âme conductrice (30) d'un câble (3) respectif, et pour passer de la position de mise en place des câbles à la position de service par rapprochement des mâchoires (2a, 2b), avec l'organe de serrage (4), d'une course prédéterminée ;
caractérisé en ce que ledit organe de serrage (4) est un rivet aveugle (4) comportant un fût (43) et un clou (40), lequel rivet aveugle (4) est configuré pour que le fût (43) se contracte selon la direction axiale, sous l'action du clou (40), entre la position de mise en place des câbles et la position de service, et configuré pour que le clou (40) rompe lorsque lesdites mâchoires (2a, 2b) se sont rapprochées de ladite course prédéterminée.Connector for connecting two electric cables (3), comprising two jaws (2a, 2b) and a clamping member (4), to bring said jaws (2a, 2b) closer to one another, each said jaw (2a, 2b) comprising a body (20) of rigid insulating material and a conductive contact member (21) having two active parts (22) each projecting from a receiving face (25) of the body (20) respectively to penetrate into the conductive core (30) of one cable (3) and into the conductive core (30) of the other cable (3), the receiving face (25) of the body (20) of each jaw (2a, 2b) being facing the receiving face (25) of the body (20) of the other jaw (2a, 2b) with each active part (22) of the contact member (21) of a jaw (2a, 2b) at the right of an active part (22) of the contact member (21) of the other jaw (2a, 2b), said connector being configured to take a position of implementation of cables between the faces of r ception (25) of the jaws (2a, 2b) with each active part (22) of a contact member (21) to the right of a cable (3), to take a service position where the cables (3) are sandwiched between the jaws (2a, 2b) with each active part (22) of each contact member (21) which has penetrated a conductive core (30) of a respective cable (3), and to pass from the positioning position of the cables at the operating position by bringing the jaws (2a, 2b) closer together with the clamping member (4) by a predetermined stroke;
characterized in that said clamping member (4) is a blind rivet (4) having a shank (43) and a nail (40), which blind rivet (4) is configured so that the shank (43) contracts according to the axial direction, under the action of the nail (40), between the positioning position of the cables and the operating position, and configured so that the nail (40) breaks when said jaws (2a, 2b) are closer to said predetermined course. Connecteur selon la revendication 1, caractérisé en ce que ledit fût (43) comporte une tête (45) en regard d'une face d'extrémité (27) d'une première dite mâchoire (2a) tandis que ledit clou (40) présente une tête (42) du côté de l'extrémité dudit fût (43) opposée à ladite tête (45), avec ledit fût (43) qui comporte un corps (44) engagé dans un logement (24) de la première mâchoire (2a) s'étendant de ladite face d'extrémité (27) à ladite face de réception (25) et dans un logement (24) de ladite deuxième mâchoire (2b) s'étendant de ladite face de réception (25) à une face d'extrémité (27) opposée à la face de réception, ledit corps (44) émergeant de ladite deuxième mâchoire (2b) au travers d'un orifice (61) de prise d'un bourrelet (47) que présente ledit fût (43) dans ladite position de service.Connector according to claim 1, characterized in that said shaft (43) comprises a head (45) facing an end face (27) of a first said jaw (2a) while said nail (40) presents a head (42) on the end side of said barrel (43) opposite said head (45), with said barrel (43) which comprises a body (44) engaged in a housing (24) of the first jaw (2a) extending from said end face (27) to said receiving face (25) and in a housing (24) of said second jaw (2b) extending from said receiving face (25) to an end face (27) opposite the receiving face, said body (44) emerging from said second jaw (2b) through a orifice (61) for taking a bead (47) that has said barrel (43) in said operating position. Connecteur selon la revendication 2, caractérisé en ce que ledit orifice de prise (61) est délimité par un organe de renforcement (28) rapporté sur le corps (20) de ladite deuxième mâchoire (2b).Connector according to claim 2, characterized in that said engagement port (61) is delimited by a reinforcing member (28) attached to the body (20) of said second jaw (2b). Connecteur selon la revendication 3, caractérisé en ce que ledit organe de renforcement (28) est une rondelle métallique engagée au fond d'un lamage (29) que comporte ledit logement (24) de ladite deuxième mâchoire (2b).Connector according to claim 3, characterized in that said reinforcing member (28) is a metal washer engaged at the bottom of a countersink (29) that includes said housing (24) of said second jaw (2b). Connecteur selon l'une quelconque des revendications 2 à 4, caractérisé en ce que, dans ladite position de mise en place des câbles, au moins une portion (33) dudit logement (24) de ladite deuxième mâchoire (2b) est d'un diamètre plus grand que le diamètre du corps (44) du fût (43) pour permettre audit corps (44) de gagner en largeur dans ladite portion (33) lors du passage de la position de mise en place des câbles à la position de service.Connector according to any one of claims 2 to 4, characterized in that , in said position of introduction of the cables, at least a portion (33) of said housing (24) of said second jaw (2b) is a diameter greater than the diameter of the body (44) of the barrel (43) to allow said body (44) to gain width in said portion (33) during the transition from the position of placing the cables in the service position . Connecteur selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'il comporte, dans un état prêt à l'emploi, des moyens d'imperdabilité dudit rivet (4).Connector according to any one of claims 1 to 5, characterized in that it comprises, in a ready-to-use state, captive means of said rivet (4). Connecteur selon la revendication 6, caractérisé en ce que lesdits moyens d'imperdabilité sont formés par un bourrelet (47) dudit corps (44) dudit fût (43), amorcé par ladite tête (42) dudit clou (40).Connector according to claim 6, characterized in that said means of imperdability are formed by a bead (47) of said body (44) of said barrel (43), initiated by said head (42) of said nail (40). Connecteur selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'il est configuré pour que lesdits deux câbles électriques (3) aient chacun une section comprise entre 1,5 mm2 et 25 mm2 avec ledit clou (40) qui est configuré pour rompre lorsqu'il est soumis à un effort de traction compris entre 4500 N et 6500 N.Connector according to any one of claims 1 to 7, characterized in that it is configured so that said two electrical cables (3) each have a section between 1.5 mm 2 and 25 mm 2 with said nail (40) which is configured to break when subjected to a traction force of between 4500 N and 6500 N. Connecteur selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'il est configuré pour que lesdits deux câbles électriques (3) aient chacun une section comprise entre 16 mm2 et 95 mm2 avec ledit clou (40) qui est configuré pour rompre lorsqu'il est soumis à un effort de traction compris entre 11000 N et 13000 N.Connector according to any one of claims 1 to 7, characterized in that it is configured so that said two electric cables (3) each have a section between 16 mm 2 and 95 mm 2 with said nail (40) which is configured to break when subjected to a tensile force of between 11000 N and 13000 N. Connecteur selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'il est configuré pour qu'un premier desdits deux câbles électriques (3) ait une section comprise entre 16 mm2 et 95 mm2 et que le second desdits deux câbles ait une section comprise entre 4 mm2 et 35 mm2 avec ledit clou (40) qui est configuré pour rompre lorsqu'il est soumis à un effort de traction compris entre 8500 N et 10500 N.Connector according to any one of claims 1 to 7, characterized in that it is configured so that a first of said two electric cables (3) has a section between 16 mm 2 and 95 mm 2 and the second of said two cables has a section of between 4 mm 2 and 35 mm 2 with said nail (40) which is configured to break when subjected to a tensile force of between 8500 N and 10500 N.
EP12173702A 2011-06-28 2012-06-26 Connector for mutually connecting two electrical cables Withdrawn EP2541684A1 (en)

Applications Claiming Priority (1)

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FR1155780A FR2977384B1 (en) 2011-06-28 2011-06-28 CONNECTOR FOR CONNECTING ONE TO THE OTHER TWO ELECTRIC CABLES

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EP (1) EP2541684A1 (en)
BR (1) BR102012015956B1 (en)
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EP4148911A1 (en) * 2021-09-08 2023-03-15 Tyco Electronics-Simel Insulation-piercing connector

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Also Published As

Publication number Publication date
FR2977384B1 (en) 2013-08-02
BR102012015956A2 (en) 2013-07-09
FR2977384A1 (en) 2013-01-04
US8678852B2 (en) 2014-03-25
BR102012015956B1 (en) 2020-09-24
US20130005175A1 (en) 2013-01-03

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