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FR2714218A3 - Electrical connection bar for electrical connection device of low tension distribution network - Google Patents

Electrical connection bar for electrical connection device of low tension distribution network Download PDF

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Publication number
FR2714218A3
FR2714218A3 FR9315523A FR9315523A FR2714218A3 FR 2714218 A3 FR2714218 A3 FR 2714218A3 FR 9315523 A FR9315523 A FR 9315523A FR 9315523 A FR9315523 A FR 9315523A FR 2714218 A3 FR2714218 A3 FR 2714218A3
Authority
FR
France
Prior art keywords
screw
hole
electrical connection
legs
piece
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
FR9315523A
Other languages
French (fr)
Other versions
FR2714218B3 (en
Inventor
Sage Michel
Senebier Claude
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.)
Mecelec Industries SAS
Original Assignee
Mecelec Industries 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 Mecelec Industries SAS filed Critical Mecelec Industries SAS
Priority to FR9315523A priority Critical patent/FR2714218B3/en
Publication of FR2714218A3 publication Critical patent/FR2714218A3/en
Application granted granted Critical
Publication of FR2714218B3 publication Critical patent/FR2714218B3/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/50—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw
    • H01R4/5016—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw using a cone
    • H01R4/5025—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw using a cone combined with a threaded ferrule operating in a direction parallel to the conductor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
    • F16B13/06—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
    • F16B13/063—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander
    • F16B13/066—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander fastened by extracting a separate expander-part, actuated by the screw, nail or the like

Landscapes

  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)

Abstract

The low tension terminal includes a block (1) with a hole (1a) in the end which is intended to be fitted to the end of an electrical cable. A hole (1c) is formed through the block, with a skirt projecting down from the periphery of the hole. The skirt includes a number of tabs (3a), inside which there is a threaded tapering component (4). A bolt (5) passes through the hole (1c) and engages the threaded tapering component, whilst the whole of the skirt is inserted in a block (10) to which it is to be connected. As the bolt is tightened, the tapering component is drawn up within the skirt, splaying out the tabs and forming a secure anchorage within the hole (10b) in the block (10).

Description

La présente invention a trait aux dispositifs électriques destinés au raccordement des réseaux basse tension permettant d'alimenter une série de dérivations à partir d'un ou de plusieurs câbles principaux. The present invention relates to electrical devices intended for the connection of low voltage networks making it possible to supply a series of taps from one or more main cables.

On sait que les dispositifs de ce type comprennent des barres métalliques parallèles en nombre égal à celui des conducteurs (phases + neutre) du réseau à distribuer. Ces barres sont portées par un socle isolant convenablement profilé et elles sont équipées d'une série de connecteurs principaux et de connecteurs secondaires pour la fixation des câbles d'alimentation et des câbles dérivés. Ces connecteurs (ou en certains cas les barres elles-mêmes) sont en outre munies de bornes supplémentaires propres à permettre la réalisation de prises de charge ou de potentiel provisoires, destinées au branchement d'une dérivation momentanée, ou à un renforcement transitoire de la puissance du dispositif, ou à l'obtention de shuntages de secours, ou encore à toute autre modification temporaire des caractéristiques des branchements dudit dispositif. We know that devices of this type include parallel metal bars in a number equal to that of the conductors (phases + neutral) of the network to be distributed. These bars are carried by a suitably profiled insulating base and they are fitted with a series of main connectors and secondary connectors for fixing power cables and derived cables. These connectors (or in some cases the bars themselves) are furthermore provided with additional terminals suitable for allowing provision of temporary load or potential sockets, intended for the connection of a momentary bypass, or for a transient reinforcement of the power of the device, or when obtaining emergency shunts, or any other temporary modification of the characteristics of the connections of said device.

Dans les constructions connues, ces bornes supplémentaires sont ordinairement constituées par une tige métallique dont une extrémité est fixée à l'une des barres ou à l'un des connecteurs, tandis que son ex trémité libre est agencée pour coopérer avec les mors d'une pince démontable de connexion. In known constructions, these additional terminals are usually formed by a metal rod, one end of which is fixed to one of the bars or to one of the connectors, while its free end is arranged to cooperate with the jaws of a removable connection clamp.

Or, l'expérience démontre que la manoeuvre d'une telle pince est malaisée, tout particulièrement lorsque le dispositif est sous tension, et qu'au surplus la connexion obtenue est de fiabilité réduite sur le plan électrique. Par ailleurs et surtout, la présence de ces bornes se révèle dangereuse du fait que par suite de leur positionnement en saillie, elles risquent d'être touchées par l'opérateur au cours des manipulations usuelles du dispositif, alors qu'elles sont maintenues en permanence sous tension électrique. However, experience has shown that the operation of such a clamp is difficult, especially when the device is energized, and that, moreover, the connection obtained is of reduced reliability on the electrical level. Furthermore and above all, the presence of these terminals proves to be dangerous since, as a result of their projecting positioning, they risk being touched by the operator during the usual manipulations of the device, while they are permanently maintained. under electric voltage.

C'est à ces inconvénients qu'entend remédier la présente invention, laquelle a pour objet une fiche adaptable de connexion dont le corps métallique, destiné à être fixé en bout d'un câble de liaison de section appropriée, comporte un embout cylindrique tubulaire formé par une série de pattes longitudinales déformables qui définissent entre elles un logement intérieur propre à recevoir une pièce taraudée à paroi extérieure tronconique coopérant avec une vis axiale dont la manoeuvre en rotation assure l'expansion radiale des pattes et leur application à force contre la paroi interne lisse d'un trou pratiqué dans une partie métallique du dispositif.  It is to these drawbacks that the present invention intends to remedy, which relates to an adaptable connection plug, the metal body of which, intended to be fixed at the end of a connection cable of appropriate section, comprises a tubular cylindrical end-piece formed by a series of deformable longitudinal tabs which define therebetween an internal housing suitable for receiving a tapped part with a frustoconical outer wall cooperating with an axial screw, the rotary operation of which ensures the radial expansion of the tabs and their force application against the internal wall smooth of a hole made in a metal part of the device.

On conçoit qu'aussi longtemps que la fiche n'est pas adaptée sur la partie métallique (barre ou connecteur), le système de connexion provisoire ne détermine aucune partie en saillie sur l'appareillage, ce qui diminue sensiblement les risques d'électrocution pour les opérateurs qui manipulent celui-ci. On notera par ailleurs que l'écartement à force des pattes de l'embout déformable assure une excellente transmission de courant par contact, surtout si l'on prend soin de conférer au logement défini entre lesdites pattes un profil tronconique d'angle identique ou similaire à celui présenté par la pièce d'expansion engagée dans ce logement. It is understood that as long as the plug is not fitted on the metal part (bar or connector), the temporary connection system does not determine any projecting part on the equipment, which significantly reduces the risk of electric shock for operators who handle it. Note also that the spacing by force of the legs of the deformable tip ensures excellent current transmission by contact, especially if care is taken to give the housing defined between said legs a frustoconical profile of identical or similar angle to that presented by the expansion piece engaged in this housing.

Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer
Fig. 1 représente à l'état séparé les éléments constitutifs d'une fiche de connexion établie conformément à l'invention.The appended drawing, given by way of example, will allow a better understanding of the invention, the characteristics which it presents and the advantages which it is capable of providing.
Fig. 1 shows in a separate state the components of a connection plug established in accordance with the invention.

Fig. 2 est une coupe axiale de la fiche à l'état monté. Fig. 2 is an axial section of the plug in the assembled state.

Fig. 3 illustre de la même manière l'adaptation de la fiche sur un connecteur. Fig. 3 illustrates in the same way the adaptation of the plug on a connector.

La fiche représentée comprend un corps à profil général parallélipipédique dont l'une des faces, avantageusement surépaissie, est agencée pour être fixée en bout d'un câble électrique de liaison. Dans l'exemple de réalisation envisagé, on a supposé que le corps 1 était percé, suivant son grand axe, d'un trou cylindrique la apte à recevoir et à retenir (par sertissage, soudage, vissage, etc...) l'extrémité du câble référencé 2 en fig. 3. The plug shown comprises a body with a generally parallelepiped profile, one of the faces, advantageously thickened, is arranged to be fixed at the end of an electrical connection cable. In the exemplary embodiment envisaged, it has been assumed that the body 1 is pierced, along its major axis, with a cylindrical hole capable of receiving and retaining it (by crimping, welding, screwing, etc.). end of the cable referenced 2 in fig. 3.

A l'opposé de ce trou la, le corps 1 est solidaire d'un bossage tubulaire lb orienté transversalement et dont l'ouverture axiale lc débouche sur la face supérieure du corps. L'extrémité libre du bossage lb est usinée pour comporter un embout 3 qui est formé par une série de pattes longitudinales 3a, séparées les unes des autres par des fentes orientées suivant des génératrices. Il convient d'observer que si la paroi extérieure de l'embout 3 est de forme cylindrique, la paroi intérieure des pattes 3a est orientée obliquement afin que le logement interne que lesdites pattes définissent présente un profil tronconique dont la grande base correspond à l'extrémité libre de l'embout. Opposite this hole la, the body 1 is integral with a tubular boss lb oriented transversely and whose axial opening lc opens onto the upper face of the body. The free end of the boss 1b is machined to include a tip 3 which is formed by a series of longitudinal tabs 3a, separated from each other by slots oriented along generators. It should be observed that if the outer wall of the end piece 3 is cylindrical in shape, the inner wall of the legs 3a is oriented obliquely so that the internal housing that said legs define has a frustoconical profile whose large base corresponds to the free end of the nozzle.

Ce logement intérieur tronconique est destiné à recevoir une pièce d'expansion 4 qui est établie à un profil extérieur tronconique d'angle substantiellement égal à celui dudit logement. Cette pièce 4 est percée d'un taraudage axial 4a afin de former écrou pour une vis 5 qui est engagée axialement à travers l'ouverture la. This frustoconical interior housing is intended to receive an expansion piece 4 which is established with a frustoconical exterior profile with an angle substantially equal to that of said housing. This part 4 is pierced with an axial thread 4a in order to form a nut for a screw 5 which is engaged axially through the opening la.

La fiche comprend encore une plaquette 6 fixée à l'aide de vis telles que 7 contre la face du corps 1 opposée à celle qui présente le bossage lb. L'extrémité de cette plaquette 6 qui est tournée en direction du débouché de l'ouverture 1c est conformée à la manière d'une fourche 6a et est engagée dans une gorge annulaire 5a prévue dans la vis 5 immédiatement au droit de la tête 5b, si bien que ladite vis 5 est retenue axialement en place tout en restant libre de tourner suivant son axe. The plug also includes a plate 6 fixed with screws such as 7 against the face of the body 1 opposite to that which has the boss lb. The end of this plate 6 which is turned towards the outlet of the opening 1c is shaped in the manner of a fork 6a and is engaged in an annular groove 5a provided in the screw 5 immediately in line with the head 5b, so that said screw 5 is retained axially in place while remaining free to rotate along its axis.

La fiche de connexion considérée est destinée à s'adapter sur un dispositif de raccordement de type quelconque, dont on a référencé en 8 (fig. 3) l'une des barres de jonction. C'est contre cette barre 8 que vient se fixer, à l'aide d'une vis 9, un connecteur principal 10 dont l'alésage 10a reçoit l'un des conducteurs principaux 11. A l'opposé de la barre 8, la paroi du connecteur 10 est percée d'un simple trou 10b à paroi lisse, dont le diamètre est très légèrement supérieur à celui présenté par l'embout 3 de la fiche lorsque ledit embout est à l'état de repos. The connection plug in question is intended to be adapted to any type of connection device, one of the connection bars of which has been referenced in 8 (fig. 3). It is against this bar 8 that a main connector 10 is fixed, using a screw 9, the bore 10a of which receives one of the main conductors 11. Unlike the bar 8, the wall of the connector 10 is pierced with a simple hole 10b with a smooth wall, the diameter of which is very slightly greater than that presented by the end piece 3 of the plug when said end piece is in the rest state.

Pour adapter la fiche sur le dispositif, il suffit en conséquence d'engager dans le trou 10b l'embout 3, muni de la pièce ou écrou 4 simplement vissé d'un tour sur l'extrémité de la vis 5, et de manoeuvrer cette dernière au vissage. Cette manoeuvre a évidemment pour effet de déplacer axialement vers le haut la pièce 4 qui écarte progressivement, par suite de son profil tronconique, les pattes déformables 3a de l'embout 3, lesquelles pattes sont ainsi fermement appliquées contre la paroi lisse du trou 10b. To adapt the plug to the device, it suffices consequently to engage in the hole 10b the end piece 3, provided with the part or nut 4 simply screwed by a turn on the end of the screw 5, and to maneuver this last screwing. This maneuver obviously has the effect of displacing the part 4 axially upwards, which progressively moves aside, owing to its frustoconical profile, the deformable tabs 3a of the end piece 3, which tabs are thus firmly applied against the smooth wall of the hole 10b.

Le contact obtenu est excellent sur le plan du transit du courant électrique, en même temps que la fiche est fermement maintenue solidaire du connecteur 10. Le démontage de cette fiche ne peut résulter que d'une manoeuvre volontaire de la vis 5 au dévissage ; par suite de la retenue axiale exercée par la plaquette 6 sur la vis 5, la rotation de celle-ci oblige la pièce ou écrou 4 à s'éloigner du corps 1, en permettant ainsi aux pattes 3a de se contracter radialement pour autoriser le retrait de l'embout 3 hors du trou 10b. The contact obtained is excellent in terms of the transit of electric current, at the same time that the plug is firmly held integral with the connector 10. The disassembly of this plug can only result from a voluntary operation of the screw 5 when unscrewed; as a result of the axial restraint exerted by the plate 6 on the screw 5, the rotation of the latter forces the part or nut 4 to move away from the body 1, thus allowing the legs 3a to contract radially to allow withdrawal of the nozzle 3 out of the hole 10b.

Il va de soi que l'ensemble de la fiche, à l'exception de la tête de manoeuvre 5b de la vis 5 et évidemment de l'embout 3, est avantageusement revêtu d'une couche 12 de matière isolante. It goes without saying that the whole of the plug, with the exception of the operating head 5b of the screw 5 and obviously of the end piece 3, is advantageously coated with a layer 12 of insulating material.

Il doit d'ailleurs être entendu que la description qui précède n'a été donnée qu'à titre d'exemple et qu'elle ne limite nullement le domai  It should moreover be understood that the above description has been given only by way of example and that it in no way limits the domai

Claims (4)

ne de l'invention dont on ne sortirait pas en remplaçant les détails d'exécution décrits par tous autres équivalents. On conçoit notamment qu'en cas d'intensités importantes (de l'ordre de 400 à 500 ampères), le corps 1 de la fiche peut être pourvu de deux embouts tubulaires 3 orientés parallèlement l'un à l'autre en vue d'obtenir deux contacts branchés en parallèle. R~E~V E~N~D~I sne of the invention from which one would not leave by replacing the execution details described by all other equivalents. It is understood in particular that in the event of large intensities (of the order of 400 to 500 amperes), the body 1 of the plug may be provided with two tubular ends 3 oriented parallel to one another in order to obtain two contacts connected in parallel. R ~ E ~ V E ~ N ~ D ~ I s 1. Fiche de connexion pour la réalisation d'une prise de charge ou de potentiel provisoire sur un dispositif de raccordement d'un réseau électrique basse tension, caractérisée en ce que son corps (1), destiné à être fixé en bout d'un câble de liaison (2), comporte au moins un embout tubulaire (3) formé par une série de pattes longitudinales (3a) qui définissent entre elles un logement intérieur occupé par une pièce taraudée (4) à paroi extérieure tronconique coopérant avec une vis axiale (5) dont la manoeuvre en rotation provoque l'expansion radiale des pattes et leur application à force contre la paroi intérieure lisse d'un trou (10b) pratiqué dans une partie métallique (10) du dispositif de raccordement. 1. Connection plug for making a temporary load or potential socket on a device for connecting a low-voltage electrical network, characterized in that its body (1), intended to be fixed at the end of a connecting cable (2), comprises at least one tubular end piece (3) formed by a series of longitudinal lugs (3a) which define between them an interior housing occupied by a tapped piece (4) with frustoconical outer wall cooperating with an axial screw (5) whose rotary operation causes the radial expansion of the tabs and their force application against the smooth interior wall of a hole (10b) made in a metal part (10) of the connection device. 2. Fiche suivant la revendication 1, caractérisée en ce que la paroi intérieure des pattes (3a) est orientée obliquement de façon à ce que le logement intérieur défini par lesdites pattes présente un profil tronconique dont l'angle correspond à celui du profil extérieur de la pièce d'expansion (4). 2. Sheet according to claim 1, characterized in that the inner wall of the legs (3a) is oriented obliquely so that the inner housing defined by said legs has a frustoconical profile whose angle corresponds to that of the outer profile of the expansion piece (4). 3. Fiche suivant l'une quelconque des revendications 1 et 2, caractérisée en ce que la vis (5) est retenue axialement afin que sa manoeuvre au dévissage provoque un déplacement de la pièce (4) propre à autoriser la contraction des pattes (3a) en vue de l'extraction de l'embout (3) hors du trou (10b).  3. Sheet according to any one of claims 1 and 2, characterized in that the screw (5) is retained axially so that its operation when unscrewing causes a displacement of the part (4) suitable for authorizing the contraction of the legs (3a ) for the extraction of the end piece (3) out of the hole (10b). 4. Fiche suivant la revendication 3, caractérisée en ce que la retenue axiale de la vis (5) est assurée par une plaquette fixe (6) présentant une extrémité fourchue (6a) engagée dans une gorge (5a) ménagée dans ladite vis immédiatement au droit de la tête de manoeuvre (5b) de celle-ci.  4. Sheet according to claim 3, characterized in that the axial retention of the screw (5) is provided by a fixed plate (6) having a forked end (6a) engaged in a groove (5a) formed in said screw immediately at right of the operating head (5b) thereof.
FR9315523A 1993-12-16 1993-12-16 Connection plug for making a temporary load or potential socket on an electrical connection device. Expired - Fee Related FR2714218B3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9315523A FR2714218B3 (en) 1993-12-16 1993-12-16 Connection plug for making a temporary load or potential socket on an electrical connection device.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9315523A FR2714218B3 (en) 1993-12-16 1993-12-16 Connection plug for making a temporary load or potential socket on an electrical connection device.

Publications (2)

Publication Number Publication Date
FR2714218A3 true FR2714218A3 (en) 1995-06-23
FR2714218B3 FR2714218B3 (en) 1995-10-27

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FR9315523A Expired - Fee Related FR2714218B3 (en) 1993-12-16 1993-12-16 Connection plug for making a temporary load or potential socket on an electrical connection device.

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Country Link
FR (1) FR2714218B3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004098008A1 (en) * 2003-04-28 2004-11-11 Tappat Engineering Pty Ltd Electrical termination system
AU2004234962B2 (en) * 2003-04-28 2010-07-22 Tyco Electronics Services Gmbh Electrical termination system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1147314A (en) * 1956-04-09 1957-11-21 C C P E Circuits Chauffants Pa Electrical connection device
GB2064890A (en) * 1979-12-07 1981-06-17 Woden Transformer Co Ltd Electrical connector
GB2120022A (en) * 1982-05-11 1983-11-23 Isc Alloys Ltd Electrical connector
GB2262767A (en) * 1991-12-06 1993-06-30 Whitaker Corp Electrical connector bolt fastening device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1147314A (en) * 1956-04-09 1957-11-21 C C P E Circuits Chauffants Pa Electrical connection device
GB2064890A (en) * 1979-12-07 1981-06-17 Woden Transformer Co Ltd Electrical connector
GB2120022A (en) * 1982-05-11 1983-11-23 Isc Alloys Ltd Electrical connector
GB2262767A (en) * 1991-12-06 1993-06-30 Whitaker Corp Electrical connector bolt fastening device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004098008A1 (en) * 2003-04-28 2004-11-11 Tappat Engineering Pty Ltd Electrical termination system
AU2004234962B2 (en) * 2003-04-28 2010-07-22 Tyco Electronics Services Gmbh Electrical termination system

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Publication number Publication date
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