EP1518299B1 - Electrical connector with end contacts for high-intensity currents - Google Patents

Electrical connector with end contacts for high-intensity currents Download PDF

Info

Publication number
EP1518299B1
EP1518299B1 EP03748193A EP03748193A EP1518299B1 EP 1518299 B1 EP1518299 B1 EP 1518299B1 EP 03748193 A EP03748193 A EP 03748193A EP 03748193 A EP03748193 A EP 03748193A EP 1518299 B1 EP1518299 B1 EP 1518299B1
Authority
EP
European Patent Office
Prior art keywords
pin
insulator
contact
plug
socket
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.)
Expired - Fee Related
Application number
EP03748193A
Other languages
German (de)
French (fr)
Other versions
EP1518299A1 (en
Inventor
Gilles Marechal
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Societe dExploitation des Procedes Marechal SEPM SA
Original Assignee
Societe dExploitation des Procedes Marechal SEPM 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 Societe dExploitation des Procedes Marechal SEPM SA filed Critical Societe dExploitation des Procedes Marechal SEPM SA
Publication of EP1518299A1 publication Critical patent/EP1518299A1/en
Application granted granted Critical
Publication of EP1518299B1 publication Critical patent/EP1518299B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
    • H01R13/2421—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means using coil springs
    • 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
    • H01R13/22—Contacts for co-operating by abutting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/18—End pieces terminating in a probe

Definitions

  • the invention relates to an electrical connector with end contacts for currents of high intensities and in particular, but not exclusively, a unipolar connector.
  • an articulated test finger defined according to a standard is used.
  • the tests consist in not being able to make a contact between the standardized test finger and the live parts of the apparatus to be tested by attempting to introduce the test finger in all possible positions.
  • a protection can be obtained by protecting each contact under tension by a shutter or placing it very indented in an insulating envelope so that the test finger can not reach it.
  • the conductors and the contact elements in the known apparatuses have sections significant current flow, which are incompatible with protection only by the insulating jacket since the diameter of the contact elements becomes close to or greater than the maximum diameter of the test finger.
  • the solution may be to arrange the contacts on a circle by making them inaccessible to the test finger by means of a rotating safety disc. This solution is particularly inapplicable to unipolar connectors which include their contacts in the center.
  • the live contacts are the pins whose ends are protected by an insulator, as for example in the embodiment described in the patent. US 3,662,296 .
  • the electrical connection between the spindle under tension and the conjugate cavity can be made on a part of the pin not accessible by the test finger.
  • FR 1,398,945 discloses an electrical connector according to the preamble of claim 1.
  • an electrical end contact connector for currents of high intensities, formed of an active base and a plug provided with at least one contact pin which is connected to an electric cable and which is intended to cooperate with an elastic contact of the base, said elastic contact being housed in an insulator of said base, while said insulator is provided with a passage opening for the introduction of the spindle of contact.
  • the connector according to the invention is notably remarkable in that the penetrating part of the contact pin of the plug has a substantially constant cross-section whose dimensions are at most slightly less than the dimensions of the cross-section of the passage opening.
  • the insulator of the base while the electrical cable to which the pin is connected has a cross-sectional area much greater than that of the penetrating portion of said pin and, for example, at least twice greater.
  • the opening of passage of the insulator of the base is cylindrical while the diameters of said opening and the penetrating part of the pin of the plug are less than 12 mm for, for example, a cable of section greater than 70 mm 2 .
  • the standardized test finger has a maximum diameter of 12 mm, and it is understood that the connector according to the invention can easily successfully test the test finger while allowing the use of currents of high intensities.
  • test finger has a shape reminiscent of a human finger and thinner towards its end. In this way, it is necessary to determine the right choice of the useful length of the spindle and its section.
  • the inventor has thus discovered that in order to offer a lower resistance and to reduce heating, it was not necessary to have as large a section as possible for the pin which would be close to 12 mm of the maximum diameter of the test finger.
  • a diameter of the spindle of between 5 and 9 mm for a length of 6 to 15 mm, this length being all the greater as said diameter is larger, while the diameter of the passage opening of the insulation is slightly greater than that of the pin and the thickness of the insulation to be crossed is equal to the length of the penetrating part of said pin reduced by the length necessary for the additional compression desired for the elastic contact.
  • the invention relates to unipolar connectors or not, it is particularly interesting to constitute a unipolar device, the plug and the base then each having only one contact.
  • the invention also relates of course to a plug or socket taken separately to constitute a connector of the aforementioned type.
  • the connector shown in the drawings here is a unipolar connector comprising a base 1 and a plug 2 for mating with each other.
  • the base 1 comprises an insulator 3 mounted in a housing 4 and in which is provided a housing 5 for an elastic contact 6 to pressure.
  • the elastic contact 6 is in this example constituted by a contact head 7 provided for example with a silver pellet, a conductive braid 8 and a spring 9 so that the contact head 7 is movable by compression and expansion of said spring 9 and the braid 8.
  • Insulator 3 is provided with a cylindrical opening opening 10 open to the outside.
  • the base 1 which has just been described is intended to be coupled with the plug 2 of the connector, which plug is provided with a cylindrical contact pin 11 provided to form an end contact with the movable elastic contact 6 on the head 7 which the pin comes to bear as shown in the drawings, the pin 11 being here also provided as the head 7 of a silver pellet at its end.
  • the pin 11 of the plug is introduced into the insulator 3 through its passage opening 10 until it solicits the contact head 7 of the contact 6 that it backs for example 4 to 5 mm, that is to say, the length that has been determined for the desired additional compression of the movable elastic contact, the latter already being prestressed in its housing.
  • the figure 1 shows the plug 2 in the base 1 at the beginning of the connection while on the figure 2 , the plug 2 is completely coupled, the connection being ensured.
  • the base is here classically active, the movable elastic contact 6 being under electrical voltage.
  • the contact pin 11 of the plug which is intended to take the current is provided with a crimping head 15 (in one or more pieces) in which is crimped an electric cable 16, which is, for example, connected to a device electric power.
  • the passage opening 10 has a sufficiently small diameter over a certain corresponding length. to the thickness of the insulation at this location.
  • the pin 11, where at least the penetrating part thereof, must also have a diameter at least slightly less than that of the passage opening 10.
  • the diameter of the pin 11, or at least its penetrating portion has been greatly reduced with respect to the diameter of the cable 16 which makes it possible to ensure the passage of a current of high intensity for a voltage greater than 50 volts.
  • the cable may thus have a section much greater than that of the pin, and, for example, about twice the section thereof for a current of 250 A.
  • a given penetration depth in the insulator determines the diameter of the passage opening thereof.
  • the maximum diameter of the passage opening of the insulator and its minimum thickness corresponding to said depth of penetration are known.
  • the maximum diameter of the spindle corresponds to the maximum diameter of the passage opening of the insulator decreased the clearance necessary for its introduction while its minimum length is equal to the minimum thickness of the insulator increased the additional crushing length of the movable elastic contact.
  • the inventor has been able to determine pairs of values: (diameter of the passage opening of the insulator, thickness of the insulator) to which correspond the pairs of values: (diameter of the spindle, length of the spindle).
  • the smallest thickness of the insulator may be preferred, for example for reasons of space and / or cost, or the least resistance of the spindle with a view to a minimum increase in heating, etc. .
  • a diameter of the spindle of between 5 and 9 mm for a length of 6 to 15 mm, the length being all the greater as the diameter is larger and more particularly still, in order to reduce at best the heating. and therefore the length / area ratio, the inventor proposes the following advantageous pair of values: a diameter of 6.7 mm for a length of 8 mm.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)

Description

L'invention concerne un connecteur électrique à contacts en bout pour courants de fortes intensités et en particulier, mais non exclusivement, un connecteur unipolaire.The invention relates to an electrical connector with end contacts for currents of high intensities and in particular, but not exclusively, a unipolar connector.

Il est connu que pour répondre aux normes en vigueur en vue d'assurer la sécurité des personnes et des biens, les appareils électriques doivent offrir un degré de protection minimum contre l'accès des pièces sous tension.It is known that to meet the standards in place to ensure the safety of people and property, electrical appliances must provide a minimum degree of protection against access to live parts.

Pour vérifier qu'une telle protection est respectée, on utilise un doigt d'épreuve articulé défini selon une norme.To verify that such protection is respected, an articulated test finger defined according to a standard is used.

Les essais consistent à ne pas pouvoir réaliser un contact entre le doigt d'épreuve normalisé et les parties sous tension de l'appareil à tester en tentant d'introduire le doigt d'épreuve dans toutes les positions possibles.The tests consist in not being able to make a contact between the standardized test finger and the live parts of the apparatus to be tested by attempting to introduce the test finger in all possible positions.

Dans le domaine des connecteurs, une protection peut être obtenue en protégeant chaque contact sous tension par un volet ou en le plaçant très en retrait dans une enveloppe isolante afin que le doigt d'épreuve ne puisse pas l'atteindre.In the field of connectors, a protection can be obtained by protecting each contact under tension by a shutter or placing it very indented in an insulating envelope so that the test finger can not reach it.

Toutefois, dans le cas des courants forts, c'est-à-dire de forte intensité (par exemple supérieure à 200 A) et utilisant des tensions supérieures à 50 volts, les conducteurs et les éléments de contact dans les appareils connus présentent des sections importantes de passage du courant, qui sont incompatibles avec une protection seulement par l'enveloppe isolante puisque le diamètre des éléments de contact devient proche ou supérieur au diamètre maximum du doigt d'épreuve.However, in the case of strong currents, that is to say of high intensity (for example greater than 200 A) and using voltages higher than 50 volts, the conductors and the contact elements in the known apparatuses have sections significant current flow, which are incompatible with protection only by the insulating jacket since the diameter of the contact elements becomes close to or greater than the maximum diameter of the test finger.

Pour les connecteurs multipolaires, la solution peut consister à disposer les contacts sur un cercle en les rendant inaccessibles au doigt d'épreuve au moyen d'un disque de sécurité rotatif. Cette solution est notamment inapplicable aux connecteurs unipolaires qui comportent leurs contacts au centre.For multipole connectors, the solution may be to arrange the contacts on a circle by making them inaccessible to the test finger by means of a rotating safety disc. This solution is particularly inapplicable to unipolar connectors which include their contacts in the center.

C'est pourquoi jusqu'à présent pour de tels courants et plus particulièrement pour les connecteurs unipolaires, une solution à broche et alvéole cylindriques particulière a été imaginée.This is why so far for such currents and more particularly for unipolar connectors, a special pin and cell solution has been devised.

Dans cette solution, contrairement aux prises de courant industrielles, les contacts sous tension sont les broches dont les extrémités sont protégées par un isolant, comme par exemple dans le mode de réalisation décrit dans le brevet US 3,662,296 .In this solution, unlike industrial power outlets, the live contacts are the pins whose ends are protected by an insulator, as for example in the embodiment described in the patent. US 3,662,296 .

De la sorte, la connexion électrique entre la broche sous tension et l'alvéole conjuguée peut s'effectuer sur une partie de la broche non accessible par le doigt d'épreuve.In this way, the electrical connection between the spindle under tension and the conjugate cavity can be made on a part of the pin not accessible by the test finger.

Il est clair qu'une telle solution est inadaptée aux contacts en bout pour lesquels par définition la connexion électrique s'effectue entre l'extrémité d'une broche de contact et un contact élastique mobile sous pression, de telle sorte que l'extrémité de la broche ne peut évidemment pas être isolée.It is clear that such a solution is unsuitable for end contacts for which, by definition, the electrical connection is made between the end of a contact pin and a movable elastic contact under pressure, so that the end of the spindle obviously can not be isolated.

C'est pourquoi pour les courants de fortes intensités qui utilisent des sections de conducteurs importantes, il était apparu impossible jusqu'à présent d'imaginer des contacts en bout du fait que les broches auraient des dimensions supérieures au doigt d'épreuve.This is why for currents of high intensities that use large conductor sections, it has been impossible until now to imagine end contacts because the pins would be larger than the test finger.

On a toujours cherché en effet à conserver une section maximale de passage du courant en vue en particulier de diminuer l'échauffement dû à l'effet Joule.It has always been sought to maintain a maximum section of current flow with a view in particular to reduce the heating due to the Joule effect.

Il est bien connu en effet que l'échauffement d'un conducteur dû au passage d'un courant est proportionnel à sa résistance électrique qui est elle-même inversement proportionnelle à sa section selon la formule R = ρl/s (où « ρ » est une constante, « 1 » la longueur du conducteur et « s » sa section) et c'est pourquoi on a toujours cherché à concevoir chaque broche de contact avec une section sensiblement égale à celle du câble électrique auquel elle est reliée.It is well known that the heating of a conductor due to the passage of a current is proportional to its electrical resistance which is itself inversely proportional to its section according to the formula R = ρl / s (where "ρ" is a constant, "1" the length of the conductor and "s" its section) and that is why it has always been sought to design each contact pin with a section substantially equal to that of the electric cable to which it is connected.

FR 1.398.945 décrit un connecteur électrique selon le préambule de la revendication 1. FR 1,398,945 discloses an electrical connector according to the preamble of claim 1.

Dans le cas d'un connecteur, l'inventeur a vaincu ce préjugé et propose un connecteur électrique à contact en bout pour courants de fortes intensités, formé d'un socle actif et d'une fiche munie d'au moins une broche de contact qui est reliée à un câble électrique et qui est destinée à coopérer avec un contact élastique du socle, ledit contact élastique étant logé dans un isolant dudit socle, tandis que ledit isolant est pourvu d'une ouverture de passage pour l'introduction de la broche de contact. Le connecteur selon l'invention est notamment remarquable en ce que la partie pénétrante de la broche de contact de la fiche présente une section droite sensiblement constante dont les dimensions sont au plus légèrement inférieures aux dimensions de la section droite de l'ouverture de passage de l'isolant du socle tandis que le câble électrique auquel la broche est reliée, présente une surface de section droite très supérieure à celle de la partie pénétrante de ladite broche et, par exemple, au moins deux fois supérieure.In the case of a connector, the inventor overcame this prejudice and proposes an electrical end contact connector for currents of high intensities, formed of an active base and a plug provided with at least one contact pin which is connected to an electric cable and which is intended to cooperate with an elastic contact of the base, said elastic contact being housed in an insulator of said base, while said insulator is provided with a passage opening for the introduction of the spindle of contact. The connector according to the invention is notably remarkable in that the penetrating part of the contact pin of the plug has a substantially constant cross-section whose dimensions are at most slightly less than the dimensions of the cross-section of the passage opening. the insulator of the base while the electrical cable to which the pin is connected, has a cross-sectional area much greater than that of the penetrating portion of said pin and, for example, at least twice greater.

En effet, si l'échauffement d'un conducteur est inversement proportionnel à sa section, il est par contre directement proportionnel à sa longueur. Cependant, pour une petite longueur de broche, l'échauffement supplémentaire dû à cette section réduite est relativement négligeable et se disperse aisément dans le câble.Indeed, if the heating of a conductor is inversely proportional to its section, it is against directly proportional to its length. However, for a small spindle length, the additional heating due to this reduced section is relatively negligible and disperses easily in the cable.

Les notions de base dans le domaine de l'électricité ne pouvaient que détourner l'inventeur de la solution, lequel a su comprendre les limites qu'impose une formule élémentaire d'électricité dans le cadre particulier d'un connecteur électrique en constatant qu'une diminution de section sur une longueur très faible avait peu d'incidence sur la résistance et donc l'échauffement dans le connecteur.The basics in the field of electricity could only divert the inventor of the solution, which has understood the limits imposed by a basic formula of electricity in the particular context of an electrical connector by noting that a decrease in section over a very small length had little effect on the resistance and therefore the heating in the connector.

De préférence, pour un connecteur muni d'une broche cylindrique, l'ouverture de passage de l'isolant du socle est cylindrique tandis que les diamètres de ladite ouverture et de la partie pénétrante de la broche de la fiche sont inférieurs à 12mm pour, par exemple, un câble de section supérieure à 70 mm2.Preferably, for a connector provided with a cylindrical pin, the opening of passage of the insulator of the base is cylindrical while the diameters of said opening and the penetrating part of the pin of the plug are less than 12 mm for, for example, a cable of section greater than 70 mm 2 .

En effet, le doigt d'épreuve normalisé présente un diamètre maximal de 12 mm, et on comprend alors que le connecteur selon l'invention peut aisément subir avec succès l'essai du doigt d'épreuve tout en permettant l'utilisation de courants de fortes intensités.Indeed, the standardized test finger has a maximum diameter of 12 mm, and it is understood that the connector according to the invention can easily successfully test the test finger while allowing the use of currents of high intensities.

Toutefois, le doigt d'épreuve présente une forme qui rappelle celle d'un doigt humain et qui s'amincit donc vers son extrémité. De la sorte, il faut déterminer le bon choix de la longueur utile de la broche et de sa section.However, the test finger has a shape reminiscent of a human finger and thinner towards its end. In this way, it is necessary to determine the right choice of the useful length of the spindle and its section.

On sait qu'une section plus importante de la broche est favorable à un abaissement de l'échauffement mais a contrario, une plus grande section nécessite un plus grand diamètre de l'ouverture de passage de l'isolant et donc une plus grande profondeur de pénétration du doigt d'épreuve, d'où une épaisseur plus importante de l'isolant et en fin de compte une plus grande longueur de la broche, ce qui augmente l'échauffement.It is known that a larger section of the spindle is favorable to a lowering of the heating but conversely, a larger section requires a larger diameter of the opening of passage of the insulator and therefore a greater depth of penetration of the test finger, resulting in a greater thickness of the insulation and ultimately a longer length of the pin, which increases the temperature rise.

L'inventeur a ainsi découvert que pour offrir une moindre résistance et diminuer l'échauffement, il ne fallait pas nécessairement une section la plus grande possible pour la broche qui serait voisine des 12 mm du diamètre maximal du doigt d'épreuve.The inventor has thus discovered that in order to offer a lower resistance and to reduce heating, it was not necessary to have as large a section as possible for the pin which would be close to 12 mm of the maximum diameter of the test finger.

C'est pourquoi on peut par exemple préconiser selon l'invention un diamètre de la broche compris entre 5 et 9 mm pour une longueur de 6 à 15 mm, cette longueur étant d'autant plus grande que ledit diamètre est plus grand, tandis que le diamètre de l'ouverture de passage de l'isolant est légèrement supérieur à celui de la broche et que l'épaisseur de l'isolant à traverser est égale à la longueur de la partie pénétrante de ladite broche diminuée de la longueur nécessaire pour la compression supplémentaire souhaitée pour le contact élastique.This is why it is possible, for example, to recommend, according to the invention, a diameter of the spindle of between 5 and 9 mm for a length of 6 to 15 mm, this length being all the greater as said diameter is larger, while the diameter of the passage opening of the insulation is slightly greater than that of the pin and the thickness of the insulation to be crossed is equal to the length of the penetrating part of said pin reduced by the length necessary for the additional compression desired for the elastic contact.

Il a notamment été trouvé des valeurs avantageuses et en particulier un diamètre de la broche compris entre 6,5 mm et 6,9 mm pour une longueur de sa partie pénétrante comprise entre 7,8 mm et 8,2 mm, le diamètre de l'ouverture de passage de l'isolant et son épaisseur étant adaptés comme précisé ci-avant.In particular, advantageous values have been found, and in particular a pin diameter of between 6.5 mm and 6.9 mm for a length of its penetrating portion of between 7.8 mm and 8.2 mm, the diameter of the spindle being passage opening of the insulation and its thickness being adapted as specified above.

Bien que l'invention concerne des connecteurs unipolaires ou non, elle est particulièrement intéressante pour constituer un dispositif unipolaire, la fiche et le socle ne comportant alors chacun qu'un seul contact.Although the invention relates to unipolar connectors or not, it is particularly interesting to constitute a unipolar device, the plug and the base then each having only one contact.

L'invention concerne bien sûr en outre une fiche ou un socle pris séparément destinés à constituer un connecteur du type précité.The invention also relates of course to a plug or socket taken separately to constitute a connector of the aforementioned type.

L'invention sera bien comprise à la lecture de la description qui va suivre et qui se réfère aux dessins annexés dans lesquels :

  • la figure 1 représente en coupe et en partie un connecteur selon l'invention, en début de manoeuvre de connexion,
  • la figure 2 correspond à la figure 1 en position de connexion.
The invention will be better understood on reading the description which follows and which refers to the appended drawings in which:
  • the figure 1 represents in section and in part a connector according to the invention, at the beginning of the connection operation,
  • the figure 2 corresponds to the figure 1 in the connection position.

Le connecteur représenté sur les dessins est ici un connecteur unipolaire comportant un socle 1 et une fiche 2 destinés à s'accoupler entre eux.The connector shown in the drawings here is a unipolar connector comprising a base 1 and a plug 2 for mating with each other.

Le socle 1 comporte un isolant 3 monté dans un carter 4 et dans lequel est aménagé un logement 5 pour un contact élastique 6 à pression.The base 1 comprises an insulator 3 mounted in a housing 4 and in which is provided a housing 5 for an elastic contact 6 to pressure.

Comme le montrent les dessins, le contact élastique 6 est dans cet exemple constitué d'une tête de contact 7 munie par exemple d'une pastille d'argent, d'une tresse conductrice 8 et d'un ressort 9 de telle sorte que la tête de contact 7 est mobile par compression et expansion dudit ressort 9 et de la tresse 8.As shown in the drawings, the elastic contact 6 is in this example constituted by a contact head 7 provided for example with a silver pellet, a conductive braid 8 and a spring 9 so that the contact head 7 is movable by compression and expansion of said spring 9 and the braid 8.

L'isolant 3 est pourvu d'une ouverture de passage cylindrique 10 ouvert vers l'extérieur.Insulator 3 is provided with a cylindrical opening opening 10 open to the outside.

Le socle 1 qui vient d'être décrit est destiné à être accouplé avec la fiche 2 du connecteur, laquelle fiche est pourvue d'une broche cylindrique de contact 11 prévue pour constituer un contact en bout avec le contact élastique mobile 6 sur la tête 7 duquel la broche vient prendre appui comme le montrent les dessins, la broche 11 étant ici également pourvue comme la tête 7 d'une pastille d'argent à son extrémité.The base 1 which has just been described is intended to be coupled with the plug 2 of the connector, which plug is provided with a cylindrical contact pin 11 provided to form an end contact with the movable elastic contact 6 on the head 7 which the pin comes to bear as shown in the drawings, the pin 11 being here also provided as the head 7 of a silver pellet at its end.

En effet, au cours de l'accouplement de la fiche 2 dans le socle 1, la broche 11 de la fiche s'introduit dans l'isolant 3 par son ouverture de passage 10 jusqu'à venir solliciter la tête de contact 7 du contact 6 qu'il fait reculer par exemple de 4 à 5 mm, c'est-à-dire de la longueur que l'on a déterminée pour la compression supplémentaire voulue du contact élastique mobile, celui-ci étant déjà précontraint dans son logement.Indeed, during the coupling of the plug 2 in the base 1, the pin 11 of the plug is introduced into the insulator 3 through its passage opening 10 until it solicits the contact head 7 of the contact 6 that it backs for example 4 to 5 mm, that is to say, the length that has been determined for the desired additional compression of the movable elastic contact, the latter already being prestressed in its housing.

La figure 1 montre la fiche 2 dans le socle 1 en début de connexion tandis que sur la figure 2, la fiche 2 est complètement accouplée, la connexion étant assurée.The figure 1 shows the plug 2 in the base 1 at the beginning of the connection while on the figure 2 , the plug 2 is completely coupled, the connection being ensured.

A cet effet, divers autres moyens de guidage et de verrouillage sont évidemment prévus, comme une bague de connexion 12, une jupe intérieure 13 qui coopère avec un joint annulaire d'étanchéité 14.For this purpose, various other guiding and locking means are obviously provided, such as a connecting ring 12, an inner skirt 13 which cooperates with an annular sealing gasket 14.

Le socle est ici classiquement actif, le contact élastique mobile 6 étant sous tension électrique.The base is here classically active, the movable elastic contact 6 being under electrical voltage.

La broche de contact 11 de la fiche qui est destinée à prendre le courant est pourvue d'une tête de sertissage 15 (en une ou plusieurs pièces) dans laquelle est serti un câble électrique 16, lequel est, par exemple, relié à un appareil électrique à alimenter.The contact pin 11 of the plug which is intended to take the current is provided with a crimping head 15 (in one or more pieces) in which is crimped an electric cable 16, which is, for example, connected to a device electric power.

On comprend que le contact 6 du socle, même sous tension, n'est pas facilement accessible du fait qu'il est entièrement logé dans l'isolant 3.It is understood that the contact 6 of the base, even under tension, is not easily accessible because it is fully housed in the insulation 3.

Pour atteindre ce contact, il faut passer par l'ouverture de passage 10 et afin de satisfaire le test du doigt d'épreuve comme expliqué ci-avant, il suffit que ladtie ouverture de passage 10 possède un diamètre suffisamment petit sur une certaine longueur correspondant à l'épaisseur de l'isolant à cet endroit.To reach this contact, it is necessary to pass through the passage opening 10 and in order to satisfy the test finger test as explained above, it suffices that the passage opening 10 has a sufficiently small diameter over a certain corresponding length. to the thickness of the insulation at this location.

De ce fait, on comprend que la broche 11, où du moins la partie pénétrante de celle-ci, doit également posséder un diamètre au plus légèrement inférieur à celui de l'ouverture de passage 10.Therefore, it is understood that the pin 11, where at least the penetrating part thereof, must also have a diameter at least slightly less than that of the passage opening 10.

Comme le montrent les dessins, le diamètre de la broche 11, ou d'au moins sa partie pénétrante, a été fortement réduit par rapport au diamètre du câble 16 qui permet d'assurer le passage d'un courant de forte intensité pour un voltage supérieur à 50 volts.As shown in the drawings, the diameter of the pin 11, or at least its penetrating portion, has been greatly reduced with respect to the diameter of the cable 16 which makes it possible to ensure the passage of a current of high intensity for a voltage greater than 50 volts.

Sur les dessins, on peut voir un câble 16 dont le diamètre est égal à plusieurs fois celui de la broche 11, un câble sensiblement identique étant en outre représenté sur les dessins pour le contact 6 du socle 1.In the drawings, there can be seen a cable 16 whose diameter is several times that of the pin 11, a substantially identical cable being furthermore shown in the drawings for the contact 6 of the base 1.

En fait, le câble peut ainsi présenter une section très supérieure à celle de la broche, et, par exemple, environ deux fois la section de celle-ci pour un courant de 250 A.In fact, the cable may thus have a section much greater than that of the pin, and, for example, about twice the section thereof for a current of 250 A.

En considérant un diamètre maximal de 12 mm pour le doigt d'épreuve, il n'y a pas nécessairement avantage à se rapprocher de ce diamètre pour la broche 11.Considering a maximum diameter of 12 mm for the test finger, it is not necessarily advantageous to approach this diameter for pin 11.

En fait, à partir du doigt d'épreuve, une profondeur de pénétration donnée dans l'isolant détermine le diamètre de l'ouverture de passage de celui-ci.In fact, from the test finger, a given penetration depth in the insulator determines the diameter of the passage opening thereof.

On connaît ainsi pour une profondeur de pénétration voulue le diamètre maximal de l'ouverture de passage de l'isolant et son épaisseur minimale qui correspond à ladite profondeur de pénétration.Thus, for a desired penetration depth, the maximum diameter of the passage opening of the insulator and its minimum thickness corresponding to said depth of penetration are known.

Il est alors facile d'en déduire le diamètre maximal et la longueur minimale de la broche. Il est en effet clair que le diamètre maximal de la broche correspond au diamètre maximal de l'ouverture de passage de l'isolant diminué du jeu nécessaire pour son introduction tandis que sa longueur minimale est égale à l'épaisseur minimale de l'isolant augmentée de la longueur d'écrasement supplémentaire du contact élastique mobile.It is then easy to deduce the maximum diameter and the minimum length of the spindle. It is indeed clear that the maximum diameter of the spindle corresponds to the maximum diameter of the passage opening of the insulator decreased the clearance necessary for its introduction while its minimum length is equal to the minimum thickness of the insulator increased the additional crushing length of the movable elastic contact.

Ainsi l'inventeur a pu déterminer des couples de valeurs : (diamètre de l'ouverture de passage de l'isolant, épaisseur de l'isolant) auxquels correspondent les couples de valeurs : (diamètre de la broche, longueur de la broche).Thus, the inventor has been able to determine pairs of values: (diameter of the passage opening of the insulator, thickness of the insulator) to which correspond the pairs of values: (diameter of the spindle, length of the spindle).

Selon les besoins, on peut privilégier la plus faible épaisseur de l'isolant, par exemple pour des raisons d'encombrement et/ou de coût, ou la moindre résistance de la broche en vue d'un accroissement minimal de l'échauffement, etc.Depending on the requirements, the smallest thickness of the insulator may be preferred, for example for reasons of space and / or cost, or the least resistance of the spindle with a view to a minimum increase in heating, etc. .

On peut ainsi préconiser un diamètre de la broche compris entre 5 et 9 mm pour une longueur de 6 à 15 mm, la longueur étant d'autant plus grande que le diamètre est plus grand et plus particulièrement encore, pour réduire au mieux l'échauffement et donc le rapport longueur/surface, l'inventeur propose le couple de valeurs avantageux suivant : un diamètre de 6,7 mm pour une longueur de 8 mm.It is thus possible to recommend a diameter of the spindle of between 5 and 9 mm for a length of 6 to 15 mm, the length being all the greater as the diameter is larger and more particularly still, in order to reduce at best the heating. and therefore the length / area ratio, the inventor proposes the following advantageous pair of values: a diameter of 6.7 mm for a length of 8 mm.

Les valeurs précitées, comme les dessins, montrent que la broche devient ainsi une sorte de téton de contact.The aforementioned values, like the drawings, show that the pin thus becomes a kind of contact pin.

Comme déjà dit, l'inventeur a vaincu le préjugé pour ce cas d'espèce qui était de vouloir conserver une section des conducteurs et des broches sensiblement constante pour le passage du courant et de même il a su réaliser qu'il fallait tenir compte des couples de valeurs longueur-section et ne pas s'arrêter à la seule section pour optimiser le type de connecteur.As already stated, the inventor overcame the prejudice for this case, which was to want to keep a section of conductors and pins substantially constant for the passage of the current and likewise realized that it was necessary to take into account the couples of length-section values and not stop at the single section to optimize the type of connector.

De plus, du fait de la réduction du diamètre de la partie pénétrante de la broche 11 et de la même manière de la tête 7 du contact 6, on réduit les surfaces de contact munies d'une pastille d'argent et ainsi le coût de fabrication.In addition, because of the reduction of the diameter of the penetrating part of the pin 11 and in the same way of the head 7 of the contact 6, the contact surfaces provided with a silver pellet are reduced and thus the cost of manufacturing.

Enfin, si le mode de réalisation représenté et qui est donné à titre d'exemple, concerne un connecteur unipolaire, il est clair qu'il pourrait s'agir d'un connecteur muni de plusieurs contacts, ou encore d'un ensemble formé d'une pluralité de connecteurs unipolaires.Finally, if the embodiment shown and which is given by way of example, relates to a unipolar connector, it is clear that it could be a connector provided with several contacts, or a set formed of a plurality of unipolar connectors.

Claims (9)

  1. Electrical connector with end contacts for heavy currents, formed by an active socket (1) and a plug (2) provided with at least one contact pin (11) which is connected to an electric cable (16) and which is designed to co-operate with an elastic contact (6) of the socket (1), said elastic contact (6) being housed in an insulator (3) of said socket, whereas said insulator is provided with a through opening (10) for the introduction of the contact pin (11), said connector being characterised in that at least the penetrating portion of the contact pin (11) of the plug exhibits a substantially constant straight section the dimensions of which are at most slightly less than the dimensions of the straight section of the through opening (10) of the insulator (3) of the socket (1), whereas the electric cable (16) to which the pin (11) is connected, exhibits a straight section surface which is much greater than that of the penetrating portion of said pin.
  2. Connector according to claim 1, characterised in that the electric cable (16) to which the pin (11) is connected, exhibits a straight section surface at least equal to twice that of the penetrating portion of said pin.
  3. Connector according to one of claims 1 and 2 provided with a cylindrical pin, characterised in that the through opening (10) of the insulator (3) of the socket (1) is cylindrical, whereas the diameters of said opening (10) and of the penetrating portion of the pin (11) of the plug are less than 12 mm.
  4. Connector according to one of claims 1 and 2, characterised in that the cable (16) exhibits a section greater than 70 mm2.
  5. Connector according to one of claims 3 and 4, characterised in that the penetrating portion of the pin (11) exhibits a diameter of between 5 and 9 mm and a length of between 6 and 15 mm, this length increasing as said diameter increases, whereas the diameter of the through opening (10) of the insulator is slightly greater than that of the pin and the thickness of the insulator to be passed through is equal to the length of the penetrating portion of said pin (11) minus the length necessary for the additional compression desired for the elastic contact (6).
  6. Connector according to claim 5, characterised in that the diameter of the pin is between 6.5 and 6.9 mm and the length of its penetrating portion is between 7.8 and 8.2 mm.
  7. Connector according to one of claims 1 to 6, characterised in that the plug (2) and the socket (1) each have only one contact (11, 6) in order to constitute a single pole connector.
  8. Plug (2) designed to constitute the plug of an electrical connector according to one of claims 1 to 7.
  9. Socket (1) designed to constitute the socket of an electrical connector according to one of claims 1 to 7.
EP03748193A 2002-07-02 2003-07-01 Electrical connector with end contacts for high-intensity currents Expired - Fee Related EP1518299B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0208225A FR2842030B1 (en) 2002-07-02 2002-07-02 ELECTRIC CONTACT CONNECTOR FOR HIGH INTENSITY CURRENTS
FR0208225 2002-07-02
PCT/FR2003/002031 WO2004006392A1 (en) 2002-07-02 2003-07-01 Electrical connector with end contacts for high-intensity currents

Publications (2)

Publication Number Publication Date
EP1518299A1 EP1518299A1 (en) 2005-03-30
EP1518299B1 true EP1518299B1 (en) 2008-07-30

Family

ID=29725058

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03748193A Expired - Fee Related EP1518299B1 (en) 2002-07-02 2003-07-01 Electrical connector with end contacts for high-intensity currents

Country Status (6)

Country Link
EP (1) EP1518299B1 (en)
AU (1) AU2003267502A1 (en)
DE (1) DE60322536D1 (en)
ES (1) ES2307966T3 (en)
FR (1) FR2842030B1 (en)
WO (1) WO2004006392A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2965119B1 (en) * 2010-09-22 2013-03-29 Marechal Sepm UNIPOLAR ELECTRICAL CONNECTOR WITH END CONTACTS

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1398945A (en) * 1964-04-03 1965-05-14 Sev Marchal Method of manufacturing a tip on a metal braid
GB2166913A (en) * 1984-11-13 1986-05-14 Tektronix Inc Impedance matched test probe
US4884864A (en) * 1987-03-24 1989-12-05 Raychem Corp. Pin and socket fiber optic connector
FR2709025B1 (en) * 1993-08-10 1995-10-20 Legrand Sa Elastic electrical contact.
FR2810804B1 (en) * 2000-06-22 2002-12-27 Marechal Sepm ELASTIC ELECTRICAL CONTACT WITH AXIAL PRESSURE AND WATERPROOF CONNECTION

Also Published As

Publication number Publication date
AU2003267502A1 (en) 2004-01-23
FR2842030A1 (en) 2004-01-09
FR2842030B1 (en) 2008-04-18
EP1518299A1 (en) 2005-03-30
DE60322536D1 (en) 2008-09-11
ES2307966T3 (en) 2008-12-01
WO2004006392A1 (en) 2004-01-15

Similar Documents

Publication Publication Date Title
FR2855660A1 (en) ELECTRICAL CONNECTION DEVICE PROVIDED WITH AT LEAST ONE TUBULAR END CONTACT
FR2953071A1 (en) ELECTRICAL CONNECTOR HOUSING
EP1107378A1 (en) Contact member for an electrical connector
WO2008081087A1 (en) Quick-fit connection socket for multi-conductor cable
WO2002009250A1 (en) Device for axially retaining a cylindrical element and more particularly a cable
FR2533768A1 (en) ELECTRICAL CONNECTOR
FR2970605A1 (en) SLEEVE FOR ELECTRICAL CONNECTOR AND METHOD FOR ASSEMBLING SAME.
EP0574293A1 (en) Electrical contact socket and connector using the same
EP1518299B1 (en) Electrical connector with end contacts for high-intensity currents
EP1568109B1 (en) Electrical contact with elastic return and electrical connection element equipped with at least one such contact
FR3025947A1 (en) INSULATING BODY FOR DETACHABLE CONNECTOR
EP2619850B1 (en) Single-pole electrical connector having butt contacts
FR2518829A1 (en) CONTACT WITH ACTIVE ELECTRIC PIN
WO2016207269A1 (en) Electrical energy storage module
FR2810804A1 (en) Sealed connection pressure operated flexible electrical contact having moving contact head with sealed tubular unit both ends open guidance well connected and part covering feed cable connection wire.
WO2001099234A1 (en) Elastic electrical contact with axial pressure, comprising adjustable connection terminal
FR2772994A1 (en) FEMALE ELECTRIC CONTACT MEMBER
FR2904489A1 (en) Three phase rotating electrical machine`s e.g. alternator, neutral point maintaining device for motor vehicle, has cap placed on neutral point that co-operates with bearing, where inner diameter of cap is higher than inner diameter of wires
FR2783639A1 (en) Spring mounted sliding electrical contact for phone includes support within axial hole inside contact ensuring constant good electrical connection
FR2855659A1 (en) Unipolar electrical connection device, has plug with tubular unit introduced into annular groove, maintained in insulator, during coupling of plug and active base that is arranged at back of insulator
BE544149A (en)
FR3041487A1 (en) ELECTRIC CONTACT AND SOCKET COMPRISING AN ELECTRICAL CONTACT
FR3077166A1 (en) ELECTRIC CONNECTOR WITH CONDUCTIVE BLADES AND CORRESPONDING METHOD
FR2884974A1 (en) Electric connector for connecting e.g. male contact on conducting cable, has standard end unit connected to end of cable and inserted via opening of tang into clip until complete engagement of end unit in retention component of clip
FR2806216A1 (en) Rapid connection device of a cable to a automotive vehicle battery terminal, has gripping zone formed by knurling to enable proper grip on the battery terminal

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20031210

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): DE ES FR GB IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 60322536

Country of ref document: DE

Date of ref document: 20080911

Kind code of ref document: P

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2307966

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20090506

REG Reference to a national code

Ref country code: DE

Ref legal event code: R088

Ref document number: 60322536

Country of ref document: DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: CL

Name of requester: MARECHAL ELECTRIC, FR

Effective date: 20130311

REG Reference to a national code

Ref country code: ES

Ref legal event code: GD2A

Effective date: 20130417

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 60322536

Country of ref document: DE

Representative=s name: CBDL PATENTANWAELTE, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R089

Ref document number: 60322536

Country of ref document: DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20190718

Year of fee payment: 17

Ref country code: DE

Payment date: 20190711

Year of fee payment: 17

Ref country code: FR

Payment date: 20190724

Year of fee payment: 17

Ref country code: ES

Payment date: 20190809

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20190719

Year of fee payment: 17

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 60322536

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20200701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200731

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210202

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20211126

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200702

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200701