EP0138700A1 - Connector for insulated electrical cables - Google Patents

Connector for insulated electrical cables Download PDF

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Publication number
EP0138700A1
EP0138700A1 EP84402009A EP84402009A EP0138700A1 EP 0138700 A1 EP0138700 A1 EP 0138700A1 EP 84402009 A EP84402009 A EP 84402009A EP 84402009 A EP84402009 A EP 84402009A EP 0138700 A1 EP0138700 A1 EP 0138700A1
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EP
European Patent Office
Prior art keywords
skirt
sleeve
connector
cables
crimping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP84402009A
Other languages
German (de)
French (fr)
Other versions
EP0138700B1 (en
Inventor
Eric Dominique Sauer
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.)
Ceraver SA
Original Assignee
D'appareillage Auxiliaire Pour L'electricite (saae) Ste
AUXILIAIRE APPAR ELECTRIC
Ceraver SA
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 D'appareillage Auxiliaire Pour L'electricite (saae) Ste, AUXILIAIRE APPAR ELECTRIC, Ceraver SA filed Critical D'appareillage Auxiliaire Pour L'electricite (saae) Ste
Priority to AT84402009T priority Critical patent/ATE29804T1/en
Publication of EP0138700A1 publication Critical patent/EP0138700A1/en
Application granted granted Critical
Publication of EP0138700B1 publication Critical patent/EP0138700B1/en
Expired 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
    • H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/20—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve
    • H01R4/203—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve having an uneven wire-receiving surface to improve the contact
    • 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
    • H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/20—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve
    • 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
    • H01R4/58—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 characterised by the form or material of the contacting members
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
    • 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
    • H01R4/70—Insulation of connections

Definitions

  • the present invention relates to a connector for insulated electrical cables, and more particularly a connector of the type comprising a conductive sleeve having two opposite housings for the stripped ends of two cables to be connected, an insulating skirt surrounding the sleeve and seals interposed between the skirt and the ends of the cable insulation sheaths, the mechanical connection between the connector and the stripped ends of the cables having to be carried out by crimping the connector on the ends of the cables.
  • FIG. 1 illustrates such a known connector; the right part shows the connector before crimping, with the sleeve 1, the skirt 2 and the seal 3; the left side shows the connector after crimping, the sleeve 1 being crimped on the stripped end of the cable while the seal is compressed between the cable insulation sheath and the skirt as a result of the elongation of the sleeve.
  • the dielectric tightness produced by the seal 3 after crimping is not always satisfactory. Indeed, for the same joint, this tightness depends on the shape of the cable sheath, shape which varies according to the manufacturers. In addition, in the case of polyphase lines, the identification of the phases is sometimes carried out by marks in relief on the sheaths of the cables, which prevents obtaining a good dielectric tightness.
  • the object of the present invention is to remedy this drawback by proposing a connector by which good dielectric tightness is obtained independently of possible variations in the shape of the outer sheath of the cables to be connected.
  • the dielectric tightness obtained is made independent of possible variations or irregularities in the shape of the cable insulation sheath.
  • the skirt is made of a synthetic material whose elongation coefficient is greater than that of the material forming the sleeve.
  • the outer surface of the sleeve and the corresponding inner surface of the skirt have a diameter which varies between the middle of the connector and each end of the latter. Thanks to this shape, for example in “barrel” or biconical, components of axial forces are generated during crimping and allow the desired differential elongation to be obtained without the need for several crimping passes.
  • the sleeve has at least one notch cooperating with a part of the skirt projecting inside thereof, so that the crimping causes the projection of this projecting part out of the 'notch and its abutment at the end of the sleeve, thus preventing the return of the projecting part in the notch after crimping.
  • This arrangement also contributes to ensuring the differential elongation necessary for good compression of the seals.
  • the connector 10 illustrated in FIG. 2 comprises a metallic sleeve 11, conductive of electricity, a skirt 15 of insulating synthetic material and two seals 21, 22 also made of an insulating synthetic material.
  • the cylindrical sleeve 11 comprises two opposite housings 12, 13 opening on its end faces and intended to receive the stripped ends 23, 24 of the cables to be connected 25, 26 (shown in dashed lines in FIG. 2).
  • the skirt 15 is in two parts 16, 17 placed on the sleeve 11 from the two ends of the latter and joined in the central part of the connector by overmolding of a connecting piece 20 of a material similar to that of parts 16 and 17.
  • the part 20 has a central part molded on a flange 14 of the sleeve 11 and two lateral annular parts penetrating into grooves formed in the parts 16, 17 in the vicinity of their adjacent ends.
  • the skirt 15 has end portions 16a, 17a of greater thickness, the internal diameter of which corresponds substantially to the external diameter of the insulation sheaths 27, 28 of the cables 25, 26.
  • Internal flanges 18, 19 integral with the skirt 15 are formed substantially at the connections of the end portions 16a, 17a with the rest of the skirt 15; they limit the engagement of the skirt parts 16, 17 on the sleeve 11 coming into contact with the ends of the sleeve and have an internal diameter greater than that of the stripped part of the cables.
  • the seals 21, 22 are housed in the end portions 16a, 17a of the skirt 15. They are for example made of synthetic rubber and have a cross section substantially equal to that of the insulation sheaths 27, 28 of the cables 25, 26. It is however possible to give the seals 21, 22 an outside diameter slightly greater than the inside diameter of the end portions 16a, 17a so that the seals 21, 22 can be immobilized permanently at the ends of the skirt 15.
  • the cables 25, 26 are connected as follows.
  • the stripped ends 23, 24 of the cables 25, 26 are introduced into the housings 12, 13 through the seals 21, 22 until the end faces 27a, 28a of the insulation sheaths 27, 28 come into contact with the seals 21, 22, applying these against the flanges 18, 19.
  • the connector 10 is crimped on each end of the cable.
  • the sleeve 11 is successively tightened on one and the other stripped end, ensuring the mechanical and electrical connection between the cables 25, 26.
  • the parts of the skirts 16, 17 lengthen, compressing the seals 21, 22.
  • a material having a coefficient of elongation greater than that of the material constituting the sleeve 11 is chosen for the skirt parts 16, 17.
  • the skirt parts 16, 17 an injectable plastic material such as a polyamide, the sleeve 11 being made of an aluminum alloy such as that known under the name A5. This difference in elongation coefficient results, after crimping, in clearances 29 between the ends of the sleeve 11 and the flanges 18, 19.
  • Obtaining sufficient differential elongation to ensure the desired compression of the seals 21, 22 may require a relatively long shrinking zone, the shrinking may require several crimping passes.
  • a connector as shown in FIGS. 4 and 5 will advantageously be used.
  • Figures 4 and 5 show the connector 30 before crimping. It includes a metal sleeve 31, a skirt 35 and two seals 41, 42.
  • the sleeve 31 has a barrel, or biconical, shape with a decreasing outside diameter from the middle of the sleeve to each end of the latter. At these ends, the sleeve 31 has two cylindrical housings 32, 33 intended to receive the stripped ends 43, 44 of cables to be connected 45, 46 (shown in dashes in FIG. 4).
  • the skirt 35 is obtained by overmolding. It has an internal surface which adapts to the external surface of the sleeve 31, which gives it an increasing thickness from the middle of the sleeve in the direction of each end.
  • the end parts 36a, 37a of the skirt 35 have internal flanges 38, 39 similar to those 18, 19 of the end parts of the skirt 15 of FIG. 2 but are distinguished from the latter by the additional presence of circular lips 51, 52 protruding inside the skirt 35.
  • Each lip 51, 52 is housed in a notch or peripheral groove 53, 54 of corresponding shape formed at the end of the sleeve 31.
  • the seals 41, 42 are housed in the end parts 36a, 37a of the skirt 35.
  • the materials constituting the elements of the connector 30 may be identical to those of the corresponding elements of connector 10 described above.
  • the connector is crimped on each end of the cable.
  • the crimping generates components of axial forces which promote elongation. This is why a single crimping pass may suffice to obtain the desired differential elongation. It is therefore not necessary to have a shrinking zone as long as that which must be provided to allow several crimping passes.
  • one of the important advantages of the embodiment of Figures 4 to 6 consists in the fact that the metal sleeve 31 can be relatively short. As an indication, for the same section of cable, the length of the sleeve 31 can be 50% to 60% less than that of the sleeve 11 of FIG. 2.
  • asperities or internal toothing such as 33a (FIG. 5) are formed in the housings 32, 33.
  • the connector according to the invention is applicable in principle to a wide range of cable cross-sections to be connected, for example from 4 mm 2 to 95 mm 2 .

Landscapes

  • Insulated Conductors (AREA)
  • Communication Cables (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

1. Connector for insulated electric cables, comprising an electrically conductive sleeve (11, 31) having two opposite housings (12, 13; 32, 33) for the bare ends (23, 24; 43, 44) of the two cables (25, 26; 45, 46) to be connected, an insulating skirt (15; 35) around the sleeve and sealing joints (21, 22; 41, 42) interposed between the skirt and the ends of the cables insulating sheaths (27, 28; 47, 48), the mechanical connection between the connector and the bare ends of the cables being achieved by crimping the connector on the ends of the cables, characterized in that the sealing joints (21, 22; 41, 42) are designed to be placed on the bare ends (23, 24; 43, 44) of the cables (25, 26; 45, 46), each one between an internal stop member (18, 19; 38, 39) integral with the skirt (15; 35) and the end face (27**a , 28**a ; 47**a , 48**a ) of the insulating sheath (27, 28; 47, 48) of the associated cable (25, 26; 45, 46), and the skirt (15; 35) is made from a synthetic material of which the strain coefficient is higher than that of the material composing the sleeve, so that dielectric insulation is achieved during the crimping operation by compression of each sealing joint between said internal stop member and said end face due to the elongation of the skirt which is greater than that of the sleeve.

Description

La présente invention concerne un connecteur pour câbles électriques isolés, et plus particulièrement un connecteur de type comportant un manchon conducteur ayant deux logements opposés pour les extrémités dénudées de deux câbles à connecter, une jupe isolante entourant le manchon et des joints d'étanchéité interposés entre la jupe et les extrémités des gaines d'isolation des câbles, la liaison mécanique entre le connecteur et les extrémités dénudées des câbles devant être réalisée par sertissage du connecteur sur les extrémités des câbles.The present invention relates to a connector for insulated electrical cables, and more particularly a connector of the type comprising a conductive sleeve having two opposite housings for the stripped ends of two cables to be connected, an insulating skirt surrounding the sleeve and seals interposed between the skirt and the ends of the cable insulation sheaths, the mechanical connection between the connector and the stripped ends of the cables having to be carried out by crimping the connector on the ends of the cables.

Dans des connecteurs connus de ce type, les joints d'étanchéité sont chacun placés entre la jupe et la surface périphérique de la gaine d'isolation d'un câble, à l'extrémité de celle-ci. Lors du sertissage, le manchon s'allonge et comprime le joint entre la gaine du câble et la jupe. La figure 1 illustre un tel connecteur connu; la partie droite montre le connecteur avant sertissage, avec le manchon 1, la jupe 2 et le joint d'étanchéité 3 ; la partie gauche montre le connecteur après sertissage, le manchon 1 étant serti sur l'extrémité dénudée du câble tandis que le joint d'étanchéité est comprimé entre la gaine d'isolation du câble et la jupe par suite de l'allongement du manchon.In known connectors of this type, the seals are each placed between the skirt and the peripheral surface of the insulation sheath of a cable, at the end of the latter. During crimping, the sleeve lengthens and compresses the joint between the cable sheath and the skirt. Figure 1 illustrates such a known connector; the right part shows the connector before crimping, with the sleeve 1, the skirt 2 and the seal 3; the left side shows the connector after crimping, the sleeve 1 being crimped on the stripped end of the cable while the seal is compressed between the cable insulation sheath and the skirt as a result of the elongation of the sleeve.

L'étanchéité diélectrique réalisée par le joint 3 après sertissage n'est pas toujours satisfaisante. En effet, pour un même joint, cette étanchéité dépend de la forme de la gaine du câble, forme qui varie selon les fabricants. De plus, dans le cas de lignes polyphasées, le repérage des phases est parfois réalisé par des marques en relief sur les gaines des câbles, ce qui empêche l'obtention d'une bonne étanchéité diélectrique.The dielectric tightness produced by the seal 3 after crimping is not always satisfactory. Indeed, for the same joint, this tightness depends on the shape of the cable sheath, shape which varies according to the manufacturers. In addition, in the case of polyphase lines, the identification of the phases is sometimes carried out by marks in relief on the sheaths of the cables, which prevents obtaining a good dielectric tightness.

La présente invention a pour but de remédier à cet inconvénient en proposant un connecteur grâce auquel une bonne étanchéité diélectrique est obtenue indépendamment de possibles variations de forme de la gaine extérieure des câbles à raccorder.The object of the present invention is to remedy this drawback by proposing a connector by which good dielectric tightness is obtained independently of possible variations in the shape of the outer sheath of the cables to be connected.

Ce but est atteint au moyen d'un connecteur du type défini en tête de la présente description et dans lequel, conformément à l'invention, les joints d'étanchéité sont destinés à être placés sur les extrémités dénudées des câbles, chacun entre une butée interne solidaire de la jupe et la face terminale de la gaine d'isolation du câble associé, l'étanchéité diélectrique étant réalisée par compression de chaque joint d'étanchéité entre ladite butée interne et ladite face terminale par suite de l'allongement de la jupe lors du sertissage.This object is achieved by means of a connector of the type defined at the head of this description and in which, in accordance with the invention, the seals are intended to be placed on the stripped ends of the cables, each between an internal stop integral with the skirt and the end face of the insulation sheath of the associated cable, the dielectric sealing being produced by compression of each seal between said internal stop and said end face as a result of the lengthening of the skirt during crimping.

De la sorte, l'étanchéité diélectrique obtenue est rendue indépendante de possibles variations ou irrégularités de forme de la gaine d'isolation des câbles.In this way, the dielectric tightness obtained is made independent of possible variations or irregularities in the shape of the cable insulation sheath.

Une compression efficace des joints d'étanchéité lors du sertissage est obtenue grâce à un allongement de la jupe supérieur à celui du manchon. A cet effet, la jupe est en un matériau synthétique dont le coefficient d'allongement est supérieur à celui du matériau formant le manchon.Efficient compression of the seals during crimping is obtained by extending the skirt greater than that of the sleeve. To this end, the skirt is made of a synthetic material whose elongation coefficient is greater than that of the material forming the sleeve.

Avantageusement, la surface extérieure du manchon et la surface intérieure correspondante de la jupe ont un diamètre qui varie entre le milieu du connecteur et chaque extrémité de celui-ci. Grâce à cette forme par exemple en "tonneau" ou biconique, des composantes de forces axiales sont engendrées lors du sertissage et permettent d'obtenir l'allongement différentiel souhaité sans qu'il soit nécessaire de procéder à plusieurs passes de sertissage.Advantageously, the outer surface of the sleeve and the corresponding inner surface of the skirt have a diameter which varies between the middle of the connector and each end of the latter. Thanks to this shape, for example in "barrel" or biconical, components of axial forces are generated during crimping and allow the desired differential elongation to be obtained without the need for several crimping passes.

Avantageusement encore, à chacune de ses extrémités, le manchon présente au moins une encoche coopérant avec une partie de la jupe faisant sailie à l'intérieur de celle-ci, de sorte que le sertissage provoque l'échappement de cette partie saillante hors de l'encoche et sa venue en butée à l'extrémité du manchon, empêchant ainsi le retour de la partie saillante dans l'encoche après sertissage. Cette disposition contribue encore à assurer l'allongement différentiel nécessaire à une bonne mise en compression des joints d'étanchéité.Advantageously also, at each of its ends, the sleeve has at least one notch cooperating with a part of the skirt projecting inside thereof, so that the crimping causes the projection of this projecting part out of the 'notch and its abutment at the end of the sleeve, thus preventing the return of the projecting part in the notch after crimping. This arrangement also contributes to ensuring the differential elongation necessary for good compression of the seals.

L'invention sera mieux comprise à la lecture de la description faite ci-après, à titre indicatif mais non limitatif, en référence aux dessins annexés sur lesquels :

  • - la figure 1, déjà décrite est une vue en coupe longitudinale d'un connecteur faisant partie de l'état de la technique,
  • - la figure 2 est une vue en coupe longitudinale d'un premier mode de réalisation d'un connecteur selon l'invention;
  • - la figure 3 est une vue en coupe longitudinale montrant deux câbles raccordés par le connecteur de la figure 2,
  • - la figure 4 est une vue en coupe longitudinale d'un second mode de réalisation d'un connecteur selon l'invention,
  • - la figure 5 est une vue en coupe transversale selon le plan V-V de la figure 4, et
  • - la figure 6 est une vue en coupe longitudinale montrant deux câbles raccordés par le connecteur de la figure 4.
The invention will be better understood on reading the description given below, by way of indication but not limitation, with reference to the appended drawings in which:
  • - Figure 1, already described is a sectional view longitudinal of a connector forming part of the state of the art,
  • - Figure 2 is a longitudinal sectional view of a first embodiment of a connector according to the invention;
  • FIG. 3 is a view in longitudinal section showing two cables connected by the connector of FIG. 2,
  • FIG. 4 is a view in longitudinal section of a second embodiment of a connector according to the invention,
  • FIG. 5 is a cross-sectional view along the plane VV of FIG. 4, and
  • FIG. 6 is a view in longitudinal section showing two cables connected by the connector of FIG. 4.

Le connecteur 10 illustré par la figure 2 comprend un manchon métallique 11, conducteur de l'électricité, une jupe 15 en matériau synthétique isolant et deux joints d'étanchéité 21, 22 également en un matériau synthétique isolant.The connector 10 illustrated in FIG. 2 comprises a metallic sleeve 11, conductive of electricity, a skirt 15 of insulating synthetic material and two seals 21, 22 also made of an insulating synthetic material.

Le manchon cylindrique 11 comprend deux logements opposés 12, 13 s'ouvrant sur ses faces d'extrémité et destinés à recevoir les extrémités dénudées 23, 24 des câbles à raccorder 25, 26 (montrés en tirets sur la figure 2).The cylindrical sleeve 11 comprises two opposite housings 12, 13 opening on its end faces and intended to receive the stripped ends 23, 24 of the cables to be connected 25, 26 (shown in dashed lines in FIG. 2).

La jupe 15 est en deux parties 16, 17 mises en place sur le manchon 11 à partir des deux extrémités de celui-ci et réunies dans la partie centrale du connecteur par surmoulage d'une pièce de liaison 20 en un matériau semblable à celui des parties 16 et 17. La pièce 20 présente une partie centrale moulée sur une collerette 14 du manchon 11 et deux parties annulaires latérales pénétrant dans des rainures formées dans les parties 16, 17 au voisinage de leurs extrémités adjacentes.The skirt 15 is in two parts 16, 17 placed on the sleeve 11 from the two ends of the latter and joined in the central part of the connector by overmolding of a connecting piece 20 of a material similar to that of parts 16 and 17. The part 20 has a central part molded on a flange 14 of the sleeve 11 and two lateral annular parts penetrating into grooves formed in the parts 16, 17 in the vicinity of their adjacent ends.

A ses extrémités, la jupe 15 a des parties terminales 16a, 17a de plus grande épaisseur dont le diamètre interne correspond sensiblement au diamètre extérieur des gaines d'isolation 27, 28 des câbles 25, 26. Des collerettes internes 18, 19 solidaires de la jupe 15 sont formées sensiblement au niveau des raccordements des parties terminales 16a, 17a avec le reste de la jupe 15; elles limitent l'engagement des parties de jupe 16, 17 sur le manchon 11 en venant au contact des extrémités du manchon et ont un diamètre interne supérieur à celui de la partie dénudée des câbles.At its ends, the skirt 15 has end portions 16a, 17a of greater thickness, the internal diameter of which corresponds substantially to the external diameter of the insulation sheaths 27, 28 of the cables 25, 26. Internal flanges 18, 19 integral with the skirt 15 are formed substantially at the connections of the end portions 16a, 17a with the rest of the skirt 15; they limit the engagement of the skirt parts 16, 17 on the sleeve 11 coming into contact with the ends of the sleeve and have an internal diameter greater than that of the stripped part of the cables.

Les joints d'étanchéité 21, 22 sont logés dans les parties terminales 16a, 17a de la jupe 15. Ils sont par exemple en caoutchouc synthétique et ont une section transversale sensiblement égale à celle des gaines d'isolation 27, 28 des câbles 25, 26. On pourra toutefois conférer aux joints 21, 22 un diamètre extérieur légèrement supérieur au diamètre intérieur des parties terminales 16a, 17a de sorte que les joints 21, 22 puissent être immobilisés à demeure aux extrémités de la jupe 15.The seals 21, 22 are housed in the end portions 16a, 17a of the skirt 15. They are for example made of synthetic rubber and have a cross section substantially equal to that of the insulation sheaths 27, 28 of the cables 25, 26. It is however possible to give the seals 21, 22 an outside diameter slightly greater than the inside diameter of the end portions 16a, 17a so that the seals 21, 22 can be immobilized permanently at the ends of the skirt 15.

Le raccordement des câbles 25, 26 est réalisé comme suit.The cables 25, 26 are connected as follows.

Les extrémités dénudées 23, 24 des câbles 25, 26 sont introduites dans les logements 12, 13 à travers les joints 21, 22 jusqu'à ce que les faces terminales 27a, 28a des gaines d'isolation 27, 28 viennent au contact des joints 21, 22, appliquant ceux-ci contre les collerettes 18, 19.The stripped ends 23, 24 of the cables 25, 26 are introduced into the housings 12, 13 through the seals 21, 22 until the end faces 27a, 28a of the insulation sheaths 27, 28 come into contact with the seals 21, 22, applying these against the flanges 18, 19.

Ensuite, le connecteur 10 est serti sur chaque extrémité de câble. Au cours du sertissage, le manchon 11 est serré successivement sur l'une et l'autre extrémité dénudée, assurant la liaison mécanique et électrique entre les câbles 25, 26. Simultanément, les parties de jupes 16, 17 s'allongent, comprimant les joints 21, 22.Then, the connector 10 is crimped on each end of the cable. During crimping, the sleeve 11 is successively tightened on one and the other stripped end, ensuring the mechanical and electrical connection between the cables 25, 26. Simultaneously, the parts of the skirts 16, 17 lengthen, compressing the seals 21, 22.

Après sertissage (figure 3), les joints 21, 22 se trouvent écrasés entre les collerettes 18, 19 et les faces terminales 27a, 28a des gaines d'isolation 27, 28. Les joints assurent ainsi une parfaite étanchéité diélectrique indépendamment de variations de forme ou de dimension des gaines 27, 28 pouvant donner naissance à des jeux entre les surfaces périphériques de celles-ci et les parties terminales de la jupe 15.After crimping (Figure 3), the seals 21, 22 are crushed between the flanges 18, 19 and the end faces 27a, 28a of the insulation sheaths 27, 28. The seals thus ensure perfect dielectric tightness regardless of shape variations or of dimensions of the sheaths 27, 28 which can give rise to play between the peripheral surfaces of the latter and the end parts of the skirt 15.

Afin d'assurer une compression efficace des joints 21, 22 on choisit pour les parties de jupe 16, 17 un matériau ayant un coefficient d'allongement supérieur à celui du matériau constitutif du manchon 11. A titre d'exemple, on peut choisir pour les parties de jupe 16, 17 une matière plastique injectable telle qu'une polyamide, le manchon 11 étant en un alliage d'aluminium tel que celui connu sous la dénomination A5. Cette différence de coefficient d'allongement se traduit, après sertissage, par des jeux 29 entre les extrémités du manchon 11 et les collerettes 18, 19.In order to ensure effective compression of the seals 21, 22, a material having a coefficient of elongation greater than that of the material constituting the sleeve 11 is chosen for the skirt parts 16, 17. For example, one can choose for the skirt parts 16, 17 an injectable plastic material such as a polyamide, the sleeve 11 being made of an aluminum alloy such as that known under the name A5. This difference in elongation coefficient results, after crimping, in clearances 29 between the ends of the sleeve 11 and the flanges 18, 19.

L'obtention d'un allongement différentiel suffisant pour assurer la compression voulue des joints 21, 22 peut nécessiter une zone de retreint relativement longue, le retreint pouvant demander plusieurs passes de sertissage.Obtaining sufficient differential elongation to ensure the desired compression of the seals 21, 22 may require a relatively long shrinking zone, the shrinking may require several crimping passes.

Pour obtenir l'allongement différentiel souhaité avec une seule passe de sertissage, on utilisera avantageusement, un connecteur tel que représenté sur les figures 4 et 5.To obtain the desired differential elongation with a single crimping pass, a connector as shown in FIGS. 4 and 5 will advantageously be used.

Les figures 4 et 5 montrent le connecteur 30 avant sertissage. Il comprend un manchon métallique 31, une jupe 35 et deux joints d'étanchéité 41, 42.Figures 4 and 5 show the connector 30 before crimping. It includes a metal sleeve 31, a skirt 35 and two seals 41, 42.

Le manchon 31 a une forme en tonneau, ou biconique, avec un diamètre extérieur décroissant depuis le milieu du manchon jusqu'à chaque extrémité de celui-ci. A ces extrémités, le manchon 31 présente deux logements cylindriques 32, 33 destinés à recevoir les extrémités dénudées 43, 44 de câbles à raccorder 45, 46 (montrés en tirets sur la figure 4).The sleeve 31 has a barrel, or biconical, shape with a decreasing outside diameter from the middle of the sleeve to each end of the latter. At these ends, the sleeve 31 has two cylindrical housings 32, 33 intended to receive the stripped ends 43, 44 of cables to be connected 45, 46 (shown in dashes in FIG. 4).

La jupe 35 est obtenue par surmoulage. Elle a une surface intérieure qui s'adapte à la surface extérieure du manchon 31, ce qui lui confère une épaisseur croissante depuis le milieu du manchon en direction de chaque extrémité.The skirt 35 is obtained by overmolding. It has an internal surface which adapts to the external surface of the sleeve 31, which gives it an increasing thickness from the middle of the sleeve in the direction of each end.

Les parties terminales 36a, 37a de la jupe 35 présentent des collerettes internes 38, 39 semblables à celles 18, 19 des parties terminales de la jupe 15 de la figure 2 mais se distinguent de ces dernières par la présence supplémentaire de lèvres circulaires 51, 52 faisant saillie à l'intérieur de la jupe 35. Chaque lèvre 51, 52 est logée dans une encoche ou gorge périphérique 53, 54 de formée correspondante forme à l'extrémité du manchon 31.The end parts 36a, 37a of the skirt 35 have internal flanges 38, 39 similar to those 18, 19 of the end parts of the skirt 15 of FIG. 2 but are distinguished from the latter by the additional presence of circular lips 51, 52 protruding inside the skirt 35. Each lip 51, 52 is housed in a notch or peripheral groove 53, 54 of corresponding shape formed at the end of the sleeve 31.

Comme dans le cas du connecteur de la figure 2, les joints d'étanchéité 41, 42 sont logés dans les parties terminales 36a, 37a de la jupe 35. Les matériaux constitutifs des éléments du connecteur 30 peuvent être identiques à ceux des éléments correspondants du connecteur 10 décrit plus haut.As in the case of the connector of FIG. 2, the seals 41, 42 are housed in the end parts 36a, 37a of the skirt 35. The materials constituting the elements of the connector 30 may be identical to those of the corresponding elements of connector 10 described above.

En vue du raccordement des câbles 45, 46, les extrémités dénudées 43, 44 de ceux-ci sont introduites dans les logements 32, 33 jusqu'à ce que les faces terminales 47a, 48a des gaines d'isolation 47, 48 des câbles viennent au contact des joints 41, 42.With a view to connecting the cables 45, 46, the stripped ends 43, 44 of these are introduced into the housings 32, 33 until the end faces 47a, 48a of the insulation sheaths 47, 48 of the cables come in contact with the seals 41, 42.

Ensuite, le connecteur est serti sur chaque extrémité du câble. Grâce à la forme en tonneau ou biconique de l'interface entre le manchon 31 et la jupe 35, le sertissage engendre des composantes de forces axiales qui favorisent l'allongement. C'est pourquoi une seule passe de sertissage peut suffire pour obtenir l'allongement différentiel souhaité. Il n'est donc pas nécessaire de disposer d'une zone de retreint aussi longue que celle qu'il faut prévoir pour permettre plusieurs passes de sertissage. Aussi, l'un des avantages importants du mode de réalisation des figures 4 à 6 consiste dans le fait que le manchon métallique 31 peut être relativement court. A titre indicatif, pour une même section de câble, la longueur du manchon 31 peut être 50 % à 60 % inférieure à celle du manchon 11 de la figure 2.Then, the connector is crimped on each end of the cable. Thanks to the barrel or biconical shape of the interface between the sleeve 31 and the skirt 35, the crimping generates components of axial forces which promote elongation. This is why a single crimping pass may suffice to obtain the desired differential elongation. It is therefore not necessary to have a shrinking zone as long as that which must be provided to allow several crimping passes. Also, one of the important advantages of the embodiment of Figures 4 to 6 consists in the fact that the metal sleeve 31 can be relatively short. As an indication, for the same section of cable, the length of the sleeve 31 can be 50% to 60% less than that of the sleeve 11 of FIG. 2.

Afin d'assurer de bonnes liaisons mécanique et électrique entre manchon et câbles en une seule passe de sertissage, des aspérités ou dentures internes telles que 33a (figure 5) sont formées dans les logements 32, 33.In order to ensure good mechanical and electrical connections between the sleeve and the cables in a single crimping pass, asperities or internal toothing such as 33a (FIG. 5) are formed in the housings 32, 33.

Au cours du sertissage, les lèvres 51, 52 s'échappent des gorges 53, 54 en direction des extrémités du manchon. Le sertissage terminé (figure 6), la venue des lèvres 51, 52 en butée contre les faces terminales du manchon empêche le retour de ces lèvres dans leur position initiale et contribue à garantir l'allongement différentiel nécessaire à la compression des joints 41, 42, allongement qui se traduit par des jeux 49 entre les extrémités du manchon 31 et les collerettes 38, 39.During crimping, the lips 51, 52 escape from the grooves 53, 54 in the direction of the ends of the sleeve. The crimping completed (Figure 6), the coming of the lips 51, 52 in abutment against the end faces of the sleeve prevents the return of these lips in their initial position and contributes to guarantee the differential elongation necessary for the compression of the seals 41, 42 , elongation which results in clearances 49 between the ends of the sleeve 31 and the flanges 38, 39.

On a envisagé le cas de lèvres continues coopérant avec des gorges périphériques aux extrémités du manchon. En variante, plusieurs parties saillantes pourront être réparties sur une même circonférence intérieure de la jupe à chaque partie terminale de celle-ci, ces parties saillantes coopérant avec des encoches correspondantes formées à la périphérie des extrémités du manchon.We considered the case of continuous lips cooperating with peripheral grooves at the ends of the sleeve. Alternatively, several projecting parts may be distributed over the same inner circumference of the skirt at each end part thereof, these projecting parts cooperating with corresponding notches formed at the periphery of the ends of the sleeve.

Le connecteur conforme à l'invention, dont deux modes de réalisation viennent d'être décrits est applicable dans son principe à une gamme étendue de section de câbles à raccorder, par exemple de 4 mm2 à 95 mm 2 . The connector according to the invention, two embodiments of which have just been described, is applicable in principle to a wide range of cable cross-sections to be connected, for example from 4 mm 2 to 95 mm 2 .

Claims (8)

1. Connecteur pour câbles électriques isolés, comportant un manchon conducteur (11 ; 31) ayant deux logements opposés (12, 13 ; 32, 33) pour les extrémités dénudées (23, 24 ; 43, 44) de deux câbles (25, 26 ; 45, 46) à connecter, une jupe isolante (15 ; 35) entourant le manchon et des joints d'étanchéité (21, 22 ; 41, 42) interposés entre la jupe et les extrémités des gaines d'isolation (27, 28 ; 47, 48) des câbles, la liaison mécanique entre le connecteur et les extrémités dénudées des câbles devant être réalisée par sertissage du connecteur sur les extrémités des câbles,
caractérisé en ce que les joints d'étanchéité (21, 22 ; 41, 42) sont destinés à être placés sur les extrémités dénudées (23, 24 ; 43, 44) des câbles (25, 26 ; 45, 46), chacun entre une butée interne (18, 19 ; 38, 39) solidaire de la jupe (15 ; 35) et la face terminale (27a, 28a ; 47a, 48a) de la gaine d'isolation (27, 28 ; 47, 48) du câble associé (25, 26 ; 45, 46), l'étanchéité diélectrique étant réalisée par compression de chaque joint d'étanchéité (21, 22 ; 41, 42) entre ladite butée interne et ladite face terminale par suite de l'allongement de la jupe (15 ; 35) lors du sertissage.1. Connector for insulated electrical cables, comprising a conductive sleeve (11; 31) having two opposite housings (12, 13; 32, 33) for the stripped ends (23, 24; 43, 44) of two cables (25, 26 ; 45, 46) to be connected, an insulating skirt (15; 35) surrounding the sleeve and seals (21, 22; 41, 42) interposed between the skirt and the ends of the insulation sheaths (27, 28 ; 47, 48) of the cables, the mechanical connection between the connector and the stripped ends of the cables having to be carried out by crimping the connector on the ends of the cables,
characterized in that the seals (21, 22; 41, 42) are intended to be placed on the stripped ends (23, 24; 43, 44) of the cables (25, 26; 45, 46), each between an internal stop (18, 19; 38, 39) integral with the skirt (15; 35) and the end face (27a, 28a; 47a, 48a) of the insulation sheath (27, 28; 47, 48) of the associated cable (25, 26; 45, 46), the dielectric seal being produced by compression of each seal (21, 22; 41, 42) between said internal stop and said end face as a result of the elongation of the skirt (15; 35) during crimping. 2. Connecteur selon la revendication 1, caractérisé en ce que la jupe (15 ; 35) est en un matériau synthétique dont le coefficient d'allongement est supérieur à celui du matériau formant le manchon (11 ; 31).2. Connector according to claim 1, characterized in that the skirt (15; 35) is made of a synthetic material whose elongation coefficient is greater than that of the material forming the sleeve (11; 31). 3. Connecteur selon l'une quelconque des revendications 1 et 2, caractérisé en ce que la surface extérieure du manchon (31) et la surface intérieure correspondante de la jupe (35) ont un diamètre qui varie entre le milieu du connecteur (30) et chaque extrémité de celui-ci.3. Connector according to any one of claims 1 and 2, characterized in that the outer surface of the sleeve (31) and the corresponding inner surface of the skirt (35) have a diameter which varies between the middle of the connector (30) and each end of it. 4. Connecteur selon la revendication 3, caractérisé en ce que lesdites surfaces ont un diamètre décroissant entre le milieu du connecteur (30) et chaque extrémité de celui-ci.4. Connector according to claim 3, characterized in that said surfaces have a decreasing diameter between the middle of the connector (30) and each end thereof. 5. Connecteur selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le manchon (31) présente à chaque extrémité au moins une encoche (53, 54) coopérant avec une partie (51, 52) de la jupe (35) faisant saillie à l'intérieur de celle-ci, de sorte que le sertissage provoque l'échappement de cette partie saillante (51, 52) hors de l'encoche (53, 54) et sa venue en butée à l'extrémité du manchon (31), empêchant ainsi le retour de la partie saillante (51, 52) dans l'encoche (53, 54) après sertissage.5. Connector according to any one of claims 1 to 4, characterized in that the sleeve (31) present at each end at least one notch (53, 54) cooperating with a part (51, 52) of the skirt (35) protruding inside thereof, so that the crimping causes the escape of this projecting part ( 51, 52) out of the notch (53, 54) and its abutment at the end of the sleeve (31), thus preventing the projection of the protruding part (51, 52) in the notch (53, 54 ) after crimping. 6. Connecteur selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les joints d'étanchéité (21, 22 ; 41, 42) ont une section transversale sensiblement égale à celle des gaines d'isolation des câbles à raccorder.6. Connector according to any one of claims 1 to 5, characterized in that the seals (21, 22; 41, 42) have a cross section substantially equal to that of the insulation sheaths of the cables to be connected. 7. Connecteur selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les butées internes (18, 19) sont réalisées sous forme de collerettes internes de la jupe (15) en contact avec les extrémités du manchon (11) avant sertissage du connecteur.7. Connector according to any one of claims 1 to 6, characterized in that the internal stops (18, 19) are produced in the form of internal flanges of the skirt (15) in contact with the ends of the sleeve (11) before crimping of the connector. 8. Connecteur selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'une denture interne (33a) est formée dans chaque logement du manchon.8. Connector according to any one of claims 1 to 7, characterized in that an internal toothing (33a) is formed in each housing of the sleeve.
EP84402009A 1983-10-14 1984-10-08 Connector for insulated electrical cables Expired EP0138700B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84402009T ATE29804T1 (en) 1983-10-14 1984-10-08 CONNECTOR FOR INSULATED ELECTRICAL CABLES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8316410 1983-10-14
FR8316410A FR2553594B1 (en) 1983-10-14 1983-10-14 CONNECTOR FOR INSULATED ELECTRICAL CABLES

Publications (2)

Publication Number Publication Date
EP0138700A1 true EP0138700A1 (en) 1985-04-24
EP0138700B1 EP0138700B1 (en) 1987-09-16

Family

ID=9293167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84402009A Expired EP0138700B1 (en) 1983-10-14 1984-10-08 Connector for insulated electrical cables

Country Status (7)

Country Link
EP (1) EP0138700B1 (en)
AT (1) ATE29804T1 (en)
DE (1) DE3466327D1 (en)
DK (1) DK489484D0 (en)
ES (1) ES291606Y (en)
FR (1) FR2553594B1 (en)
PT (1) PT79350B (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2177131A (en) * 1985-01-02 1987-01-14 Polypipe Ltd Drainage gulley
FR2629645A1 (en) * 1988-03-30 1989-10-06 Capelles De La Fuente Rosa Electrical connection device for connecting insulated conductors
WO1996003784A1 (en) * 1994-07-28 1996-02-08 Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co. Kg Compression-type sleeve
US5502280A (en) * 1993-07-30 1996-03-26 Etcon Corporation Cable splice protector
GB2328087A (en) * 1997-06-26 1999-02-10 B & H Ltd Connection for high voltage
GB2371420A (en) * 2001-01-19 2002-07-24 Yazaki Corp Crimp connections
CN104701802A (en) * 2014-05-25 2015-06-10 安徽工程大学 Pressing connection ring used for cable joint
EP3062407B1 (en) * 2015-02-27 2019-06-26 Upeca Coupling sleeve between conductive cables, manufacturing process and implementing process for such a sleeve.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006028880A1 (en) * 2006-06-21 2007-12-27 Yazaki Europe Ltd., Hemel Hempstead cable connection

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3036147A (en) * 1959-08-21 1962-05-22 Fargo Mfg Co Inc Connector
FR1533861A (en) * 1966-08-10 1968-07-19 Amp Inc Electrical connector
DE1615551A1 (en) * 1963-03-21 1969-04-10 Amp Inc Coaxial electrical connector for coaxial electrical cables

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3036147A (en) * 1959-08-21 1962-05-22 Fargo Mfg Co Inc Connector
DE1615551A1 (en) * 1963-03-21 1969-04-10 Amp Inc Coaxial electrical connector for coaxial electrical cables
FR1533861A (en) * 1966-08-10 1968-07-19 Amp Inc Electrical connector

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2177131A (en) * 1985-01-02 1987-01-14 Polypipe Ltd Drainage gulley
GB2177131B (en) * 1985-01-02 1989-04-12 Polypipe Ltd A drainage gulley
FR2629645A1 (en) * 1988-03-30 1989-10-06 Capelles De La Fuente Rosa Electrical connection device for connecting insulated conductors
US5502280A (en) * 1993-07-30 1996-03-26 Etcon Corporation Cable splice protector
WO1996003784A1 (en) * 1994-07-28 1996-02-08 Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co. Kg Compression-type sleeve
GB2328087A (en) * 1997-06-26 1999-02-10 B & H Ltd Connection for high voltage
GB2371420A (en) * 2001-01-19 2002-07-24 Yazaki Corp Crimp connections
GB2371420B (en) * 2001-01-19 2003-03-19 Yazaki Corp Wire connecting structure and connecting method
US6734359B2 (en) 2001-01-19 2004-05-11 Yazaki Corporation Wire connecting structure and connecting method
CN104701802A (en) * 2014-05-25 2015-06-10 安徽工程大学 Pressing connection ring used for cable joint
EP3062407B1 (en) * 2015-02-27 2019-06-26 Upeca Coupling sleeve between conductive cables, manufacturing process and implementing process for such a sleeve.

Also Published As

Publication number Publication date
PT79350B (en) 1986-07-22
EP0138700B1 (en) 1987-09-16
ES291606U (en) 1986-05-01
ES291606Y (en) 1987-01-16
PT79350A (en) 1984-11-01
FR2553594B1 (en) 1986-02-21
DK489484D0 (en) 1984-10-12
ATE29804T1 (en) 1987-10-15
DE3466327D1 (en) 1987-10-22
FR2553594A1 (en) 1985-04-19

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