EP0121637A1 - Straight electrical connecting end piece - Google Patents

Straight electrical connecting end piece Download PDF

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Publication number
EP0121637A1
EP0121637A1 EP19830420064 EP83420064A EP0121637A1 EP 0121637 A1 EP0121637 A1 EP 0121637A1 EP 19830420064 EP19830420064 EP 19830420064 EP 83420064 A EP83420064 A EP 83420064A EP 0121637 A1 EP0121637 A1 EP 0121637A1
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EP
European Patent Office
Prior art keywords
branch
terminal
electrical connection
opening
bosses
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
EP19830420064
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German (de)
French (fr)
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EP0121637B1 (en
Inventor
Jean Trigon
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.)
Electricfil Industrie SARL
Electricfil SA
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Electricfil Industrie SARL
Electricfil 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.)
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Publication date
Application filed by Electricfil Industrie SARL, Electricfil SA filed Critical Electricfil Industrie SARL
Priority to EP19830420064 priority Critical patent/EP0121637B1/en
Priority to DE8383420064T priority patent/DE3366780D1/en
Publication of EP0121637A1 publication Critical patent/EP0121637A1/en
Application granted granted Critical
Publication of EP0121637B1 publication Critical patent/EP0121637B1/en
Expired legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets

Definitions

  • the present invention relates to end caps, more generally called lugs, attached to the ends of electrical conductors to ensure the connection between a distribution source and a device for use.
  • the invention relates, more particularly, to the ends which are used in the electrical harnesses of ignition of engines, such as the internal combustion engines and with spark ignition, in particular for motor vehicles.
  • connection between the supply harness and the members it connects takes place in directions different from those corresponding to the axes of the connection terminals. with olive outlet, especially when the overall size or the space available requires it.
  • the bent end pieces generally used are parts obtained by stamping. Such end pieces have an "L" shape, at right angles or obtuse, and include a branch for connection with the wire of the harness and a branch for connection with the connection terminal. Such ends are satisfactory for the electrical connection function and serve as intermediaries for transmitting the tensile forces when it comes to disconnecting the wire from a connection terminal.
  • Another solution consists in crimping the lugs at the ends of a wire and then in threading the caps by subjecting them to an elastic deformation sufficient to ensure the passage of the bent edge of the lugs.
  • US Pat. No. 2,024,814 describes a straight end piece having a tubular connection branch having a series of axial slots delimiting tongues in the portion of a cylindrical wall.
  • the end of this branch is open to allow the axial introduction of the connecting olive, for example a candle.
  • the relative maintenance after engagement is ensured by the combination of a local conformation of the tongues and by their elastic reaction capacity.
  • the connection branch has, moreover, a hole of radial axis partially formed in two tongues contiguous to the right of the local conformation to allow a radial engagement of an olive.
  • the tongues thus tend to open relatively by radial expansion and no longer assume the dual function of mechanical strength and electrical contact for which they are designed.
  • Such a end piece comprises a connection branch of tubular shape, split axially and open at its end for the axial engagement of the olive. a candle. On either side of the slot, openings are made for the engagement of protuberances formed by a split ring, a kind of clip surrounding the branch. These protuberances assume the function of stops for the clip and for the olive. The reaction to the elastic deformation of the clip is used to make the branch assume the functions.
  • This structure has several drawbacks.
  • the present invention aims to remedy the known drawbacks of end caps or lugs of the prior art and proposes, in order to assume the function in the above-mentioned technical field, to use a straight end cap specially made for per put a corner or axial connection with a connection terminal.
  • An object of the invention is to provide a tip or thimble of a general straight character with great ease of adaptation and which can be fitted with a protective cap of the straight or angled type.
  • Another object of the invention is to provide a straight end piece for electrical connection which can be produced at an attractive cost price, in large series.
  • Yet another object of the invention is to provide a straight end piece for electrical connection capable of supporting a large number of successive connection and disconnection operations without altering its electrical and mechanical connection capacities with the connection terminals.
  • An additional object of the invention is to provide a new straight tip for electrical connection which allows easy and automated assembly of the protective caps, whether the latter are straight or bent.
  • Fig. 1 is a perspective of the object of the invention.
  • Fig. 2 is a transverse view taken substantially along the plane II-II of FIG. 1.
  • Fig. 3 is a perspective illustrating the implementation of the object of the invention according to FIG. 1.
  • the right end piece of electrical connection comprises a branch 1 of crimping on an insulated electrical conductor, such as a wire of a combustion engine ignition harness. It should be considered that the subject of the invention can find a different application from that above given solely by way of nonlimiting example.
  • the crimping branch 1 comprises, for the purpose of connection with the conductor, two crimping wings 3 which can be folded down and clamped on the insulated conductor to provide mechanical resistance and establish electrical contact with the conductive element.
  • the crimping branch 1 is extended by a connecting branch 4 of generally cylindrical tubular shape extending coaxially to the branch 1 and of diameter greater than that of a connection terminal 6.
  • the connection branch 4 is obtained by a rolling operation of the corresponding part of the metal blank from which the branches 1 and 4 are formed.
  • connection part 4 defines an aperture 5 which may be in alignment with the open section of the wings 3 or be shifted year ulairement g.
  • the opening 5 is intended for the engagement of the connection terminal 6, illustrated in FIG. 2, in the form of a suitable olive on the end of a spark plug.
  • a terminal 6 comprises a frustoconical bearing 6a terminating by its large base in a cylindrical part 6b followed by a frustoconical bearing 6c oriented opposite to the bearing 6a.
  • the frustoconical bearing 6c leads to the bottom of an annular groove 6d whose particular function will be highlighted in the following.
  • the opening 5, associated with at least one elastic locking means 7 intervening in the passage section, is executed so as to extend up to the level of the open transverse end 13.
  • the opening is formed over a depth radial less than the radius of the branch and thus defines, in the peripheral wall of the branch 4, two lips 18 parallel to each other and to the axis A having two longitudinal edges 19 which extend above a diametral plane P 'passing through axis A (fig. 1).
  • the edges 19 thus define between them an engagement passage corresponding to the opening 5.
  • the edges 19 represent elastic locking means of a terminal 6 and, for this purpose, are supplemented by the presence of two bosses 20 executed at starting from the external face of the corresponding lip to project on the internal surface of the branch 4.
  • the two pairs of bosses 20 facing each other are executed, in addition, so that those, located in position of not opposite visJ are spaced slightly less than the diameter of the bottom of the groove 6d from the terminal 6.
  • the lips 18, the edges 19 and the bosses 20 assume the functions of elastic clamp and electrical contact.
  • Fig. 3 shows that the relative engagement of the terminal 6 between the bosses 20 allows for an elbow connection from the straight end piece according to the invention while providing a possibility of relative orientation at an angle different from 90 °.
  • connection branch 4 and a terminal such as 6, is obtained by ensuring the relative introduction of the terminal 6 in the direction of the arrow f inside the opening 5, c ' that is to say in a substantially radial direction relative to the axis A of the branch 4.
  • the bearing surface 6a engages between the bosses 20 and causes the elastic opening of the lips 18.
  • L 'maximum engagement of the terminal 6 inside the branch 4 is determined by the contact of the 6th face with the part of the wall of the branch substantially opposite the opening 5 relative to the axis.
  • the bosses 20 enclose the terminal and cooperate with the groove 6d and the bearing 6c. This results in maintenance of the terminal 6 by tightening with establishment of an electrical contact.
  • the conformation of the lips 18 makes it possible to confer stable and reproducible elastic deformation characteristics.
  • the tip can thus be assembled and disassembled many times without altering its qualities of maintenance and electrical contact.
  • provision may be made to form, in the branch 4 and opposite the opening 5, a stamped 11 having a flat bottom 12 to cooperate with the 6th side.
  • the lateral connection zones between the deep-drawn 11 and the cylindrical profile of the branch increasing the resistance to elastic deformation and give the lips 18 a function of elastic clamp with clamping which is even more effective.
  • the object of the invention represents a nozzle of straight structure capable of ensuring an elbow electrical connection between a conductor and a terminal 6.
  • Another advantage of such an embodiment lies in the fact that the mounting of a protective cap on the wire can be carried out easily, by simple sliding on the straight end piece after crimping the end piece on the wire and checking the electrical qualities.
  • the opening 5 is axially longer than it is wide. It thus becomes possible to engage the terminal 6 in a direction inclined to the plane P and thus to make an electrical connection at an angle different from 90 °, the electrical contact being ensured at least by tightening the bosses 20.
  • Fig. 3 also shows that the branch 4 can also be used when it is necessary to ensure a straight connection.
  • the terminal 6 can be engaged axially along the arrow f 4 from the open transverse face 13 so that the first bosses 20 appearing assume a clamp function by engaging inside the annular groove 6d ; the other two bosses serve to limit the penetration of terminal 6 along axis A and participate in the electrical contact function.

Abstract

1. Straight electrical terminal connector assembly of the type comprising a crimping branch (1) ensuring electrical connection with a conductor, and a substantially tubular branch (4) forming socket extending axially from the crimping branch and comprising an opening (5) for engaging terminal (6) into the branch at least according to a substantially radial direction, means (7) being provided for elastic locking and electrical connection with the terminal, characterized in that the said locking means comprise : - two lips (18) formed by the wall of the connecting branch (4) and defining the longitudinal edges (19) of an opening (5) which extends as far as the open end (13) of the branch, - two bosses (20) projecting on the inner face of each of said lips (18), and facing one another in pairs.

Description

La présente invention est relative aux embouts, plus généralement dénommés cosses, rapportés aux extrémités de conducteurs électriques pour assurer le raccordement entre une source de distribution et un appareil d'utilisation.The present invention relates to end caps, more generally called lugs, attached to the ends of electrical conductors to ensure the connection between a distribution source and a device for use.

L'invention vise, plus particulièrement, les embouts qui sont mis en oeuvre dans les faisceaux électriques d'allumage de moteurs, tels que lés moteurs à combustion interne et à allumage commandé, notamment pour véhicules automobiles.The invention relates, more particularly, to the ends which are used in the electrical harnesses of ignition of engines, such as the internal combustion engines and with spark ignition, in particular for motor vehicles.

Dans le domaine technique ci-dessus, il arrive que le raccordement entre le faisceau d'alimentation et les organes qu'il relie (bobine, distributeur, bougies), s'effectue selon des directions différentes de celles correspondant aux axes des bornes de raccordement avec sortie par olive, notamment lorsque l'encombrement général ou la place disponible l'exige.In the above technical field, it sometimes happens that the connection between the supply harness and the members it connects (coil, distributor, spark plugs) takes place in directions different from those corresponding to the axes of the connection terminals. with olive outlet, especially when the overall size or the space available requires it.

Pour réaliser de tels raccordements, il est connu d'utiliser des embouts présentant une conformation coudée. De tels embouts doivent, comme les embouts ordinaires, être complétés par des capuchons en matière élastique prévus pour enserrer le fil conducteur et la borne de raccordement afin de réaliser une association étanche.To make such connections, it is known to use end pieces having a bent conformation. Such tips must, like ordinary tips, be supplemented by caps made of elastic material provided to grip the conductive wire and the connection terminal in order to achieve a sealed association.

Les embouts coudés généralement utilisés sont des pièces obtenues par emboutissage. De tels embouts présentent une forme en "L", à angle droit ou obtus, et comportent une branche de liaison avec le fil du faisceau et une branche de connexion avec la borne de raccordement. De tels embouts sont satisfaisants pour la fonction de connexion électrique et servent d'intermédiaires de transmission des efforts de traction lorsqu'il s'agit de déconnecter le fil d'avec une borne de raccordement.The bent end pieces generally used are parts obtained by stamping. Such end pieces have an "L" shape, at right angles or obtuse, and include a branch for connection with the wire of the harness and a branch for connection with the connection terminal. Such ends are satisfactory for the electrical connection function and serve as intermediaries for transmitting the tensile forces when it comes to disconnecting the wire from a connection terminal.

Malheureusement, ils augmentent l'encombrement du raccordement et ne se prêtent pas aisément au montage d'un capuchon en matière élastique. En effet, la forme coudée s'oppose à un glissement aisé du capuchon sur la cosse et sur le fil et à sa mise en place sur la cosse.Unfortunately, they increase the size of the connection and do not lend themselves easily to the mounting of a cap made of elastic material. Indeed, the angled shape opposes an easy sliding of the cap on the terminal and on the wire and its installation on the pod.

Pour pallier cet inconvénient, il a été proposé d'enfiler d'abord le capuchon coudé sur le fil conducteur, de sertir ensuite un embout sur le fil, puis de ramener le capuchon en position sur l'embout. L'ensemble constitué est ensuite contrôlé quant aux caractéristiques électriques qu'il présente. Si les caractéristiques électriques désirées ne sont pas atteintes, l'ensemble constitué est rebuté.To overcome this drawback, it has been proposed to first thread the bent cap onto the conductive wire, then crimp an end cap on the wire, then bring the cap back into position on the end cap. The assembly is then checked for the electrical characteristics it presents. If the desired electrical characteristics are not reached, the assembly formed is discarded.

Cette méthode de fabrication n'est pas satisfaisante car les capuchons en matière élastique étant d'un prix de revient élevé, il n'est pas souhaitable économiquement de rebuter le fil déjà équipé de ses capuchons.This manufacturing method is not satisfactory because the caps made of elastic material being of a high cost price, it is not economically desirable to discard the wire already equipped with its caps.

Une autre solution consiste à sertir les cosses aux extrémités d'un fil puis à procéder à l'enfilage des capuchons en soumettant ces derniers à une déformation élastique suffisante pour assurer le passage de l'arête coudée des cosses.Another solution consists in crimping the lugs at the ends of a wire and then in threading the caps by subjecting them to an elastic deformation sufficient to ensure the passage of the bent edge of the lugs.

Un tel procédé n'est pas non plus satisfaisant car il conduit à imposer aux capuchons une déformation telle qu'il en résulte une destruction des capacités de réaction élastique, voire une destruction structurelle par déchirure. Dans tous les cas, un tel capuchon n'est plus à même de remplir les fonctions d'étanchéité et d'isolation électrique pour lesquelles il est prévu.Such a method is also not satisfactory because it results in imposing on the caps a deformation such that it results in destruction of the elastic reaction capacities, or even structural destruction by tearing. In all cases, such a cap is no longer able to fulfill the functions of sealing and electrical insulation for which it is intended.

Pour tenter de régler ce problème, différentes solutions techniques ont déjà été proposées.To try to resolve this problem, various technical solutions have already been proposed.

Le brevet US-A-2 024 814 décrit un embout droit possédant une branche de connexion tubulaire présentant une série de fentes axiales délimitant des languettes en portion de paroi cylindrique. L'extrémité de cette branche est ouverte pour permettre l'introduction axiale de l'olive de raccordement par exemple d'une bougie. Le maintien relatif après engagement est assuré par la combinaison d'une conformation locale des languettes et par leur faculté de réaction élastique. La branche de connexion présente,par ailleurs.l un trou d'axe radial ménagé partiellement dans deux languettes contiguës au droit de la conformation locale pour permettre un engagement radial d'une olive.US Pat. No. 2,024,814 describes a straight end piece having a tubular connection branch having a series of axial slots delimiting tongues in the portion of a cylindrical wall. The end of this branch is open to allow the axial introduction of the connecting olive, for example a candle. The relative maintenance after engagement is ensured by the combination of a local conformation of the tongues and by their elastic reaction capacity. The connection branch has, moreover, a hole of radial axis partially formed in two tongues contiguous to the right of the local conformation to allow a radial engagement of an olive.

Une telle structure ne peut fournir un service durable irréprochable en établissant une connexion mécaniquement et électri- quement convenable. En effet, les fentes axiales ont pour résultat de limiter la partie travaillante au pied de liaison avec la branche. Cette partie est de faible longueur d'arc mais supporte les nombreuses sollicitations et en particulier les contraintes alternées de flexion lors des montages et démontage.Such a structure cannot provide impeccable sustainable service by establishing a mechanically and electrically connected quemen t suitable. Indeed, the axial slits result in limiting the working part at the foot of connection with the branch. This part has a short arc length but supports the numerous stresses and in particular the alternating bending stresses during assembly and disassembly.

Les languettes ont ainsi tendance à s'ouvrir relativement par expansion radiale et n'assument plus alors la fonction double de tenue mécanique et de contact électrique pour laquelle elles sont conçues.The tongues thus tend to open relatively by radial expansion and no longer assume the dual function of mechanical strength and electrical contact for which they are designed.

On connaît également le brevet US-A 3 995 929 concernant un embout droit comportant une branche de connexion, non tubulaire formée de pattes conformées s'étendant par un pied de faible section à partir.d'une branche de sertissage.The patent US Pat. No. 3,995,929 is also known, relating to a straight end fitting comprising a non-tubular connection branch formed of shaped lugs extending by a foot of small cross section from a crimping branch.

Une telle structure est encore plus sujette aux inconvénients rappelés ci-dessus.Such a structure is even more subject to the drawbacks mentioned above.

On a proposé aussi de réaliser un embout droit selon le brevet US-A-4 009 924. Un tel embout comporte une branche de connexion de forme tubulaire, fendue axialement et ouverte à son extrémité pour l'engagement axial de l'olive d'une bougie. De part et d'autre de la fente, des ouvertures sont pratiquées pour l'engagement de protubérances formées par une bague fendue, une sorte de clip entourant la branche. Ces protubérances assument une fonction de butées pour le clip et pour l'olive. La réaction à la déformation élastique du clip est mise à profit pour faire assumer les fonctions à la branche.It has also been proposed to produce a straight end piece according to patent US-A-4,009,924. Such a end piece comprises a connection branch of tubular shape, split axially and open at its end for the axial engagement of the olive. a candle. On either side of the slot, openings are made for the engagement of protuberances formed by a split ring, a kind of clip surrounding the branch. These protuberances assume the function of stops for the clip and for the olive. The reaction to the elastic deformation of the clip is used to make the branch assume the functions.

Cette structure présente plusieurs inconvénients.This structure has several drawbacks.

En premier lieu, la construction d'un tel dispositif exige une opération de fabrication indépendante pour le clip ainsi qu'une opération propre de montage de ce dernier.Firstly, the construction of such a device requires an independent manufacturing operation for the clip as well as a proper assembly operation of the latter.

En second lieu, une telle structure ne permet un raccordement que dans le sens de l'engagement axial et ne peut donc être retenue pour une connexion du type en équerre à moins de prévoir une conformation spéciale de la branche de connexion. Mais ceci implique une seconde gamme de fabrication.Secondly, such a structure allows connection only in the direction of axial engagement and therefore cannot be used for a connection of the angled type unless a special conformation of the connection branch is provided. But this implies a second manufacturing range.

La présente invention vise à remédier aux inconvénients connus des embouts ou cosses de la technique antérieure et propose, pour assumer la fonction dans le domaine technique ci-dessus rappelé, de mettre en oeuvre un embout droit spécialement constitué pour permettre un raccordement d'angle ou axial avec une borne de connexion.The present invention aims to remedy the known drawbacks of end caps or lugs of the prior art and proposes, in order to assume the function in the above-mentioned technical field, to use a straight end cap specially made for per put a corner or axial connection with a connection terminal.

Un objet de l'invention est de fournir un embout ou une cosse de caractère général droit présentant une grande facilite d'adaptation et pouvant être équipé d'un capuchon de protection de type droit ou coudé.An object of the invention is to provide a tip or thimble of a general straight character with great ease of adaptation and which can be fitted with a protective cap of the straight or angled type.

Un autre objet de l'invention est de fournir un embout droit de raccordement électrique pouvant être produit à un prix de revient intéressant, en grande série.Another object of the invention is to provide a straight end piece for electrical connection which can be produced at an attractive cost price, in large series.

Un autre objet encore de l'invention est de fournir un embout droit de raccordement électrique capable de supporter un grand nombre d'opérations de connexion et de déconnexion successives sans altération de ses capacités de raccordements électrique et mécanique avec les bornes de connexion.Yet another object of the invention is to provide a straight end piece for electrical connection capable of supporting a large number of successive connection and disconnection operations without altering its electrical and mechanical connection capacities with the connection terminals.

Un objet supplémentaire de l'invention est de fournir un nouvel embout droit de raccordement électrique qui permette un montage facile et automatisable des capuchons protecteurs, que ces derniers soient droits ou coudés.An additional object of the invention is to provide a new straight tip for electrical connection which allows easy and automated assembly of the protective caps, whether the latter are straight or bent.

Pour atteindre les buts ci-dessus, l'embout droit de raccordement conforme à l'invention est caractérisé en ce qu'il comprend des moyens de verrouillage élastique et de contact électrique avec une borne, ces moyens comportant :

  • - deux lèvres formées par la paroi de la branche de connexion et délimitant les bords longitudinaux d'une ouverture qui se prolonge jusqu'à l'extrémité ouverte de la branche,
  • - deux bossages faisant saillie sur la face interne de chacune des lèvres en se faisant face deux à deux.
To achieve the above goals, the straight connection end piece according to the invention is characterized in that it comprises elastic locking means and electrical contact with a terminal, these means comprising:
  • - two lips formed by the wall of the connection branch and delimiting the longitudinal edges of an opening which extends to the open end of the branch,
  • - two bosses projecting from the internal face of each of the lips, facing each other two by two.

Diverses autres caractéristiques de l'objet de l'invention ressortent de la description détaillée faite ci-dessous en référence aux dessins annexés qui montrent, à titre d'exemple , une forme de réalisation de l'objet de l'invention.Various other characteristics of the object of the invention will emerge from the detailed description given below with reference to the accompanying drawings which show, by way of example, an embodiment of the object of the invention.

La fig. 1 est une perspective de l'objet de l'invention.Fig. 1 is a perspective of the object of the invention.

La fig. 2 est une vue transversale prise sensiblement selon le plan II-II de la fig. 1.Fig. 2 is a transverse view taken substantially along the plane II-II of FIG. 1.

La fig. 3 est une perspective illustrant la mise en oeuvre de l'objet de l'invention selon la fig. 1.Fig. 3 is a perspective illustrating the implementation of the object of the invention according to FIG. 1.

Selon la fig. 1, l'embout droit de raccordement électrique comprend une branche 1 de sertissage sur un conducteur électrique isolé, tel qu'un fil d'un faisceau d'allumage de moteur thermique. Il doit être considéré que l'objet de l'invention peut trouver une application différente de celle ci-dessus donnée uniquement à titre d'exemple non limitatif.According to fig. 1, the right end piece of electrical connection comprises a branch 1 of crimping on an insulated electrical conductor, such as a wire of a combustion engine ignition harness. It should be considered that the subject of the invention can find a different application from that above given solely by way of nonlimiting example.

La branche de sertissage 1 comporte, dans le but de raccordement avec le conducteur, deux ailes de sertissage 3 qui peuvent être rabattues et serrées sur le conducteur isolé pour assurer une tenue mécanique et établir un contact électrique avec l'élément conducteur.The crimping branch 1 comprises, for the purpose of connection with the conductor, two crimping wings 3 which can be folded down and clamped on the insulated conductor to provide mechanical resistance and establish electrical contact with the conductive element.

La branche de sertissage 1 est prolongée par une branche de connexion 4 de forme générale tubulaire cylindrique s'étendant coaxialement à la branche 1 et de diamètre supérieur à celui maximal d'une borne 6 de raccordement. Selon un mode de réalisation préféré, la branche de connexion 4 est obtenue par une opération de roulage de la partie correspondante du flan métallique à partir duquel les branches 1 et 4 sont formées.The crimping branch 1 is extended by a connecting branch 4 of generally cylindrical tubular shape extending coaxially to the branch 1 and of diameter greater than that of a connection terminal 6. According to a preferred embodiment, the connection branch 4 is obtained by a rolling operation of the corresponding part of the metal blank from which the branches 1 and 4 are formed.

Dans sa partie terminale, la branche de connexion 4 délimite une ouverture 5 qui peut se trouver dans l'alignement de la section ouverte des ailes 3 ou être décalée angulairement. L'ouverture 5 est destinée à l'engagement de la borne de raccordement 6, illustrée à la fig. 2, sous la forme d'une olive adaptée sur l'extrémité d'une bougie d'allumage. De façon connue, une borne 6 comprend une portée 6a tronconique aboutissant par sa grande base à une partie cylindrique 6b suivie d'une portée tronconique 6c orientée à l'opposé de la portée 6a. La portée tronconique 6c aboutit au fond d'une gorge annulaire 6d dont la fonction particulière sera mise en évidence dans ce qui suit.In its terminal part, the connection part 4 defines an aperture 5 which may be in alignment with the open section of the wings 3 or be shifted year ulairement g. The opening 5 is intended for the engagement of the connection terminal 6, illustrated in FIG. 2, in the form of a suitable olive on the end of a spark plug. In known manner, a terminal 6 comprises a frustoconical bearing 6a terminating by its large base in a cylindrical part 6b followed by a frustoconical bearing 6c oriented opposite to the bearing 6a. The frustoconical bearing 6c leads to the bottom of an annular groove 6d whose particular function will be highlighted in the following.

L'ouverture 5, associée à au moins un moyen de verrouillage élastique 7 intervenant dans la section de passage, est exécutée de manière à s'étendre jusqu'au niveau de l'extrémité transversale ouverte 13. L'ouverture est ménagée sur une profondeur radiale inférieure au rayon de la branche et définit ainsi, dans la paroi périphérique de la branche 4, deux lèvres 18 parallèles entre elles et à l'axe A possédant deux bords longitudinaux 19 qui s'étendent au-dessus d'un plan diamétral P' passant par l'axe A (fig. 1). Les bords 19 définissent ainsi entre eux un couloir d'engagement correspondant à l'ouverture 5. Les bords 19 représentent des moyens de verrouillage élastique d'une borne 6 et, à cet effet, sont complétés par la présence de deux bossages 20 exécutés à partir de la face extérieure de la lèvre correspondante pour faire saillie sur la surface interne de la branche 4. Les deux paires de bossage 20 se faisant face sont exécutées, en outre, de manière que ceux, situés en position de non vis-à-visJ soient distants d'une mesure légèrement inférieure au diamètre de fond de gorge 6d de la borne 6. Les lèvres 18, les bords 19 et les bossages 20 assument les fonctions de pince élastique et de contact électrique.The opening 5, associated with at least one elastic locking means 7 intervening in the passage section, is executed so as to extend up to the level of the open transverse end 13. The opening is formed over a depth radial less than the radius of the branch and thus defines, in the peripheral wall of the branch 4, two lips 18 parallel to each other and to the axis A having two longitudinal edges 19 which extend above a diametral plane P 'passing through axis A (fig. 1). The edges 19 thus define between them an engagement passage corresponding to the opening 5. The edges 19 represent elastic locking means of a terminal 6 and, for this purpose, are supplemented by the presence of two bosses 20 executed at starting from the external face of the corresponding lip to project on the internal surface of the branch 4. The two pairs of bosses 20 facing each other are executed, in addition, so that those, located in position of not opposite visJ are spaced slightly less than the diameter of the bottom of the groove 6d from the terminal 6. The lips 18, the edges 19 and the bosses 20 assume the functions of elastic clamp and electrical contact.

La fig. 3 fait apparaître que l'engagement relatif de la borne 6 entre les bossages 20 permet de réaliser un raccordement coudé à partir de l'embout droit selon l'invention tout en offrant une possibilité d'orientation relative selon un angle différent de 90°.Fig. 3 shows that the relative engagement of the terminal 6 between the bosses 20 allows for an elbow connection from the straight end piece according to the invention while providing a possibility of relative orientation at an angle different from 90 °.

En effet, la connexion électrique entre la branche de connextion 4 et une borne telle que 6, est obtenue en assurant l'introduction relative de la borne 6 dans le sens de la flèche f à l'intérieur de l'ouverture 5, c'est-à-dire selon une direction sensiblement radiale par rapport à l'axe A de la branche 4. Au cours de ce déplacement relatif, la portée 6a s'engage entre les bossages 20 et provoque l'ouverture élastique des lèvres 18. L'engagement maximal de la borne 6 à l'intérieur de la branche 4 est déterminé par le contact de la face 6e avec la partie de la paroi de la branche sensiblement opposée à l'ouverture 5 par rapport à l'axe. Dans cette position, illustrée par la fig. 3, les bossages 20 enserrent la borne et coopèrent avec la gorge 6d et la portée 6c. Il en résulte un maintien de la borne 6 par serrage avec établissement d'un contact électrique.Indeed, the electrical connection between the connection branch 4 and a terminal such as 6, is obtained by ensuring the relative introduction of the terminal 6 in the direction of the arrow f inside the opening 5, c ' that is to say in a substantially radial direction relative to the axis A of the branch 4. During this relative displacement, the bearing surface 6a engages between the bosses 20 and causes the elastic opening of the lips 18. L 'maximum engagement of the terminal 6 inside the branch 4 is determined by the contact of the 6th face with the part of the wall of the branch substantially opposite the opening 5 relative to the axis. In this position, illustrated in FIG. 3, the bosses 20 enclose the terminal and cooperate with the groove 6d and the bearing 6c. This results in maintenance of the terminal 6 by tightening with establishment of an electrical contact.

Lorsqu'une déconnexion est envisagée, il suffit d'exercer sur l'embout une traction dans le sens de la flèche f3 pour provoquer l'appui de la portée tronconique 6c sollicitant l'écartement élastique vers l'extérieur des lèvres 18.When a disconnection is envisaged, it suffices to exert traction on the endpiece in the direction of the arrow f 3 to cause the support of the frustoconical bearing 6c urging the elastic spacing towards the outside of the lips 18.

Il y a lieu de noter que la conformation des lèvres 18 permet de conférer des caractéristiques de déformation élastique stables et reproductibles. L'embout peut ainsi être monté et démonté de nombreuses fois sans altération de ses qualités de maintien et de contact électrique. Dans le but d'améliorer les caractéristiques électriques, par augmentation de la surface de contact, il peut être prévu de former, dans la branche 4et à l'opposé de l'ouverture 5, un embouti 11 présentant un fond plan 12 pour coopérer avec la face 6e. Les zones de raccordement latérales entre l'embouti 11 et le profil cylindrique de la branche accroissant la résistance à la déformation élastique et confèrent aux lèvres 18 une fonction de pince élastique à serrage plus efficace encore.It should be noted that the conformation of the lips 18 makes it possible to confer stable and reproducible elastic deformation characteristics. The tip can thus be assembled and disassembled many times without altering its qualities of maintenance and electrical contact. In order to improve the electrical characteristics, by increasing the contact surface, provision may be made to form, in the branch 4 and opposite the opening 5, a stamped 11 having a flat bottom 12 to cooperate with the 6th side. The lateral connection zones between the deep-drawn 11 and the cylindrical profile of the branch increasing the resistance to elastic deformation and give the lips 18 a function of elastic clamp with clamping which is even more effective.

Ainsi que cela ressort de ce qui précède, l'objet de l'invention, tel que décrit ci-dessus, représente un embout de structure droite à même d'assurer un raccordement électrique coudé entre un conducteur et une borne 6. Un autre avantage d'une telle réalisation réside dans le fait que le montage d'un capuchon de protection sur le fil peut s'effectuer facilement, par simple glissement sur l'embout droit après sertissage de l'embout sur le fil et contrôle des qualités électriques.As is apparent from the above, the object of the invention, as described above, represents a nozzle of straight structure capable of ensuring an elbow electrical connection between a conductor and a terminal 6. Another advantage of such an embodiment lies in the fact that the mounting of a protective cap on the wire can be carried out easily, by simple sliding on the straight end piece after crimping the end piece on the wire and checking the electrical qualities.

Selon l'invention, l'ouverture 5 est axialement plus longue que large. Il devient ainsi possible d'engager la borne 6 selon une direction inclinée sur le plan P et de réaliser ainsi un raccordement électrique selon un angle différent de 90°, le contact électrique étant assuré au moins par le serrage des bossages 20.According to the invention, the opening 5 is axially longer than it is wide. It thus becomes possible to engage the terminal 6 in a direction inclined to the plane P and thus to make an electrical connection at an angle different from 90 °, the electrical contact being ensured at least by tightening the bosses 20.

La fig. 3 fait également apparaître que la branche 4 peut aussi être utilisée lorsqu'il y a lieu d'assurer un raccordement droit. En effet, la borne 6 peut être engagée axialement selon la flèche f4 à partir de la face transversale ouverte 13 de manière que les premiers bossages 20 se présentant assument une fonction de pince en s'engageant à l'intérieur de la gorge annulaire 6d ; les deux autres bossages servent à limiter la pénétration de la borne 6 selon l'axe A et participent à la fonction de contact électrique.Fig. 3 also shows that the branch 4 can also be used when it is necessary to ensure a straight connection. Indeed, the terminal 6 can be engaged axially along the arrow f 4 from the open transverse face 13 so that the first bosses 20 appearing assume a clamp function by engaging inside the annular groove 6d ; the other two bosses serve to limit the penetration of terminal 6 along axis A and participate in the electrical contact function.

Claims (6)

l - Embout droit de raccordement électrique du type comprenant une branche (1) de sertissage et de liaison électrique avec un conducteur et une branche (4) sensiblement tubulaire en forme de douille s'étendant dans le prolongement axial de la branche de sertissage et comportant une ouverture (5) pour l'engagement d'une borne (6) dans la branche au moins selon une direction sensiblement radiale et des moyens (7) de verrouillage élastique et de contact électrique avec la borne,
caractérisé en ce que les moyens de verrouillage comprennent : - deux lèvres (18) formées par la paroi de la branche - de connexion (4) et délimitant les bords longitudinaux (19) de l'ouverture (5) qui se prolonge jusqu'à l'extrémité (13) ouverte de la branche, - deux bossages (20) faisant saillie sur la face interne de chacune des lèvres (18) en se faisant face deux à deux. l - Straight end piece of electrical connection of the type comprising a branch (1) for crimping and electrical connection with a conductor and a branch (4) substantially tubular in the form of a socket extending in the axial extension of the crimping branch and comprising an opening (5) for engaging a terminal (6) in the branch at least in a substantially radial direction and means (7) for elastic locking and electrical contact with the terminal,
characterized in that the locking means comprise: - two lips (18) formed by the wall of the branch - connection (4) and delimiting the longitudinal edges (19) of the opening (5) which extends to the open end (13) of the branch, - two bosses (20) projecting from the internal face of each of the lips (18) facing two by two. 2 - Embout droit de raccordement électrique selon la revendication I, caractérisé en ce que l'ouverture 5 est ménagée sur une distance radiale inférieure au rayon de la branche et présente, entre les bords (19), une largeur compatible avec le diamètre d'une gorge (6d) de la borne (6).2 - straight end of electrical connection according to claim I, characterized in that the opening 5 is formed over a radial distance less than the radius of the branch and has, between the edges (19), a width compatible with the diameter of a groove (6d) of the terminal (6). 3 - Embout droit de raccordement électrique selon la revendication 1 ou 2, caractérisé en ce que les bords (19) sont complétés par deux paires de bossages (20) exécutés pour que ceux alternes soient distants d'une mesure inférieure au diamètre de fond de gorge (6d) de la borne.3 - straight end of electrical connection according to claim 1 or 2, characterized in that the edges (19) are completed by two pairs of bosses (20) executed so that those alternate are distant by a measure less than the bottom diameter of groove (6d) of the terminal. 4 - Embout droit de raccordement électrique selon la revendication 1, caractérisé en ce que la branche de connexion (4) comporte une empreinte (11) ménagée en creux à partir de la face interne de la partie de paroi de branche diamétralement opposée à l'ouverture (5).4 - straight end piece for electrical connection according to claim 1, characterized in that the connection branch (4) has an imprint (11) formed in hollow from the internal face of the branch wall portion diametrically opposite to the opening (5). 5 - Embout droit de raccordement électrique selon la revendication 4, caractérisé en ce que l'empreinte en creux (11) comporte une partie plane (12) constituant une surface de contact avec une face plane transversale (6e) présentée par la borne (6).5 - straight end piece of electrical connection according to claim 4, characterized in that the hollow imprint (11) comprises a flat part (12) constituting a contact surface with a transverse flat face (6e) presented by the terminal (6 ). 6 - Embout droit de raccordement électrique selon l'une des revendications 1 à 3, caractérisé en ce que les bossages (20) sont exécutés pour que ceux homologues situés le plus près de l'ouverture (13) s'engagent dans la gorge (6d) d'une borne (6) introduite axialement dans la branche (4) tandis que la seconde paire de bossages homologues représentent une butée limitant la pénétration de ladite borne.6 - Straight end piece for electrical connection according to one of claims 1 to 3, characterized in that the bosses (20) are executed so that those counterparts located closest to the opening (13) engage in the groove ( 6d) of a terminal (6) introduced axially into the branch (4) while the second pair of homologous bosses represent a stop limiting the penetration of said terminal.
EP19830420064 1983-04-12 1983-04-12 Straight electrical connecting end piece Expired EP0121637B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19830420064 EP0121637B1 (en) 1983-04-12 1983-04-12 Straight electrical connecting end piece
DE8383420064T DE3366780D1 (en) 1983-04-12 1983-04-12 Straight electrical connecting end piece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19830420064 EP0121637B1 (en) 1983-04-12 1983-04-12 Straight electrical connecting end piece

Publications (2)

Publication Number Publication Date
EP0121637A1 true EP0121637A1 (en) 1984-10-17
EP0121637B1 EP0121637B1 (en) 1986-10-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830420064 Expired EP0121637B1 (en) 1983-04-12 1983-04-12 Straight electrical connecting end piece

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EP (1) EP0121637B1 (en)
DE (1) DE3366780D1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0305729A2 (en) * 1987-08-06 1989-03-08 Itt Industries, Inc. Connector for printed circuit board
EP0652606A1 (en) * 1993-11-08 1995-05-10 Sumitomo Wiring Systems, Ltd. Female terminal metal fixture for connector
US6280210B1 (en) 2000-04-10 2001-08-28 Garrett Products, Inc. Ignition wiring connector
WO2004107505A1 (en) * 2003-05-27 2004-12-09 Molex Incorporated Electrical receptacle-type terminal

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2024814A (en) * 1932-11-18 1935-12-17 Rajah Company Electrical connecter
DE1465461A1 (en) * 1962-05-17 1969-04-03 Elco Corp Plug contact
DE1950738A1 (en) * 1969-10-08 1971-04-15 Amphenol Tuchel Elect Connector contact element with high burn resistance
FR2136638A5 (en) * 1971-04-27 1972-12-22 Amp Inc
US3995929A (en) * 1974-11-05 1976-12-07 General Motors Corporation Female terminal
US4009924A (en) * 1976-03-18 1977-03-01 General Motors Corporation Spark plug connector assembly

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2024814A (en) * 1932-11-18 1935-12-17 Rajah Company Electrical connecter
DE1465461A1 (en) * 1962-05-17 1969-04-03 Elco Corp Plug contact
DE1950738A1 (en) * 1969-10-08 1971-04-15 Amphenol Tuchel Elect Connector contact element with high burn resistance
FR2136638A5 (en) * 1971-04-27 1972-12-22 Amp Inc
US3995929A (en) * 1974-11-05 1976-12-07 General Motors Corporation Female terminal
US4009924A (en) * 1976-03-18 1977-03-01 General Motors Corporation Spark plug connector assembly

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0305729A2 (en) * 1987-08-06 1989-03-08 Itt Industries, Inc. Connector for printed circuit board
EP0305729A3 (en) * 1987-08-06 1990-10-31 Itt Industries, Inc. Connector for printed circuit board
EP0652606A1 (en) * 1993-11-08 1995-05-10 Sumitomo Wiring Systems, Ltd. Female terminal metal fixture for connector
US5503570A (en) * 1993-11-08 1996-04-02 Sumitomo Wiring Systems, Ltd. Female terminal metal fixture for connector
US6280210B1 (en) 2000-04-10 2001-08-28 Garrett Products, Inc. Ignition wiring connector
WO2004107505A1 (en) * 2003-05-27 2004-12-09 Molex Incorporated Electrical receptacle-type terminal

Also Published As

Publication number Publication date
EP0121637B1 (en) 1986-10-08
DE3366780D1 (en) 1986-11-13

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