EP0037313A2 - Devices permitting the sealing of electrical connectors - Google Patents

Devices permitting the sealing of electrical connectors Download PDF

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Publication number
EP0037313A2
EP0037313A2 EP81400431A EP81400431A EP0037313A2 EP 0037313 A2 EP0037313 A2 EP 0037313A2 EP 81400431 A EP81400431 A EP 81400431A EP 81400431 A EP81400431 A EP 81400431A EP 0037313 A2 EP0037313 A2 EP 0037313A2
Authority
EP
European Patent Office
Prior art keywords
sleeve
contact
electrical connectors
cable
sealing
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
EP81400431A
Other languages
German (de)
French (fr)
Other versions
EP0037313A3 (en
EP0037313B1 (en
Inventor
Dominique Emile Desourteaux
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.)
Francelco SA
Original Assignee
Francelco 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 Francelco SA filed Critical Francelco SA
Priority to AT81400431T priority Critical patent/ATE10313T1/en
Publication of EP0037313A2 publication Critical patent/EP0037313A2/en
Publication of EP0037313A3 publication Critical patent/EP0037313A3/en
Application granted granted Critical
Publication of EP0037313B1 publication Critical patent/EP0037313B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5205—Sealing means between cable and housing, e.g. grommet

Definitions

  • the present invention relates to improvements to the devices enabling the electrical connectors to be sealed.
  • An electrical connector is generally constituted in its simplest form by two parts made of an insulating material and each containing a metallic member, or contact, connected to the end of an electrical conductor. By engaging the two parties in one another, the contacts are made to cooperate.
  • the annular orifice formed between the entry orifice of the insulating part and the external surface of the cable is closed by a sleeve made of a very soft synthetic rubber made integral with the tail of the contact. by crimping.
  • This sleeve is engaged on the cable and positioned on the latter prior to the connection of said cable to the tail of the contact which has, for this purpose, two additional crimping lugs similar to those used to fix the end of the cable to said contact.
  • the sleeve must have a stepped part to allow crimping, which complicates its manufacture; the crimping of the sleeve is only possible if the latter is rigorously positioned relative to the stripped end of the cable, hence an additional operation prior to crimping; crimping complicates the production of crimping machines; the fixing of the sleeve is very random due to its extreme flexibility and the crimping must be carried out with great precision.
  • the present invention which overcomes these drawbacks, is remarkable in that the sealing sleeve is overmolded on the end of the tail of the contact.
  • the electrical contact comprises two usual parts 1 and 2, that 1 constituting the contact member proper while that 2 forms a tail to which the electrical cable C is connected.
  • the tail 2 has two pairs of lugs 3a and 3b, the lugs 3a being crimped on the stripped end of the cable C while those 3b are crimped on the insulation of said cable.
  • a sleeve 4 made of a very flexible natural or synthetic rubber is molded onto the end of the tail 2, extending beyond the legs 3b.
  • the end of the tail has an extension 5 suitably cut and arched which after over / molding of the sleeve is embedded in the latter and cooperates in its maintenance.
  • the external diameter of the sleeve is greater than that of the internal housing L of the connector to receive it and that of its central opening 6 is slightly greater than that of the cable C.
  • the cable freely crosses the sleeve which, thus, does not interfere with the positioning of the cable prior to its attachment to the contact.
  • the sleeve enters the housing L of the connector, the material constituting it then compresses around the cable, ensuring sealing.
  • the outer periphery and the inner periphery of the latter have grooves 7.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)

Abstract

An improved sealing system for use with cooperating electrical connectors for placing two cables of the type wherein each of the cables has an insulator sheath in contact. A contact is inserted into a lodging in each of the connectors with a resulting space between the outer diameter of the insulator sheath and the inner diameter of the electrical connector. The sealing system includes: (a) an electrical contact having a contact element and a tail portion, the tail portion being adapted to be crimped onto one of the cables; and (b) a flexible sealing sleeve molded onto the tail portion of the electrical contact, the sealing sleeve being adapted to seal the space.

Description

La présente invention est relative à des perfectionnements aux dispositifs permettant d'assurer l'étanchéité des connecteurs électriques.The present invention relates to improvements to the devices enabling the electrical connectors to be sealed.

Un connecteur électrique est généralement constitué dans sa forme la plus simple par deux parties réalisées en un matériau isolant et renfermant chacune un organe métallique, ou contact, relié à l'extrémité d'un conducteur électrique. En engageant les deux parties l'une dans l'autre on fait coopérer les contacts.An electrical connector is generally constituted in its simplest form by two parts made of an insulating material and each containing a metallic member, or contact, connected to the end of an electrical conductor. By engaging the two parties in one another, the contacts are made to cooperate.

Pour de nombreuses applications, il importe que les contacts soient isolés de l'atmosphère notamment si celle-ci est vicée ou particulièrement humide.For many applications, it is important that the contacts are isolated from the atmosphere, in particular if the latter is vitiated or particularly humid.

Si le problème de l'étanchéité est assez facile à résoudre au droit du raccordement des parties isolantes, il est plus délicat au droit des entrées des câbles dont le diamètre est bien supérieur à celui des câbles isolés.If the problem of sealing is fairly easy to solve on the right of the connection of the insulating parts, it is more delicate on the right of the cable entries whose diameter is much greater than that of the insulated cables.

En l'état actuel de la technique, l'orifice annulaire ménagé entre l'orifice d'entrée de la partie isolante et la surface extérieure du câble est obturée par un manchon réalisé en un caoutchouc synthétique très mou rendu solidaire de la queue du contact par sertissage.In the current state of the art, the annular orifice formed between the entry orifice of the insulating part and the external surface of the cable is closed by a sleeve made of a very soft synthetic rubber made integral with the tail of the contact. by crimping.

Ce manchon est engagé sur le câble et positionné sur ce dernier préalablement au raccordement dudit câble à la queue du contact qui présente, à cet effet, deux-pattes de sertissage supplémentaire analogues à celles utilisées pour fixer l'extrémité du câble sur ledit contact.This sleeve is engaged on the cable and positioned on the latter prior to the connection of said cable to the tail of the contact which has, for this purpose, two additional crimping lugs similar to those used to fix the end of the cable to said contact.

Ce procédé ne donne pas satisfaction pour les raisons suivantes: le manchon doit présenter une partie épaulée pour permettre le sertissage ce qui complique sa fabrication; le sertissage du manchon n'est possible que si ce dernier est rigoureusement positionné par rapport à l'extrémité dénudée du câble d'où une opération supplémentaire préalablement au sertissage; le sertissage complique la réalisation des machines à sertir ; la fixation du manchon est très aléatoire en raison de son extrême souplesse et le sertissage doit être effectué avec beaucoup de précision. En effet, si le sertissage est trop fort il y a un risque d'écrasement de la partie épaulée du manchon entraînant le sectionnement de celle-ci mais, si le sertissage est trop faible, le manchon n'est pas maintenu et une action intempestive sur le câble provoque l'échappement du manchon hors de son logement.This process is not satisfactory for the following reasons: the sleeve must have a stepped part to allow crimping, which complicates its manufacture; the crimping of the sleeve is only possible if the latter is rigorously positioned relative to the stripped end of the cable, hence an additional operation prior to crimping; crimping complicates the production of crimping machines; the fixing of the sleeve is very random due to its extreme flexibility and the crimping must be carried out with great precision. Indeed, if the crimping is too strong there is a risk of crushing of the shoulder part of the sleeve causing the cutting thereof, but, if the crimping is too weak, the sleeve is not maintained and an untimely action on the cable causes the sleeve to escape from its housing.

La présente invention qui remédie à ces inconvénients, est remarquable en ce que le manchon d'étanchéité est surmoulé sur l'extrémité de la queue du contact.The present invention which overcomes these drawbacks, is remarkable in that the sealing sleeve is overmolded on the end of the tail of the contact.

L'invention sera mieux comprise par la description qui va suivre faite en se référant au dessin annexé à titre d'exemple indicatif seulement, sur lequel :

  • La figure 1 est une vue en coupe d'un des contacts d'un connecteur usuel modifié en vue de recevoir le manchon de l'invention ;
  • La figure 2 est la vue de dessus de la figure 1;
  • La figure 3 est une vue analogue à la figure 1 montrant un contact de l'invention;
  • La figure 4 est une vue en coupe effectuée selon la ligne IV-IV de la figure 3;
  • La figure 5 est une vue analogue à la figure 3 montrant le contact fixé à l'extrémité d'un câble;
  • La figure 6 est une vue en coupe, à plus petite échelle, montrant l'utilisation de contacts de l'invention dans un connecteur électrique usuel.
The invention will be better understood from the description which follows made with reference to the attached drawing by way of indicative example only, in which:
  • Figure 1 is a sectional view of one of the contacts of a conventional connector modified to receive the sleeve of the invention;
  • Figure 2 is the top view of Figure 1;
  • Figure 3 is a view similar to Figure 1 showing a contact of the invention;
  • Figure 4 is a sectional view taken along the line IV-IV of Figure 3;
  • Figure 5 is a view similar to Figure 3 showing the contact attached to the end of a cable;
  • Figure 6 is a sectional view, on a smaller scale, showing the use of contacts of the invention in a conventional electrical connector.

En se reportant au dessin, on voit que le contact électrique comprend deux parties usuelles 1 et 2, celle 1 constituant l'organe de contact proprement dit tandis que celle 2 forme une queue sur laquelle on raccorde le câble électrique C.Referring to the drawing, it can be seen that the electrical contact comprises two usual parts 1 and 2, that 1 constituting the contact member proper while that 2 forms a tail to which the electrical cable C is connected.

A cet effet et de la façon usuelle, la queue 2 présente deux paires de pattes 3a et 3b, les pattes 3a étant serties sur l'extrémité dénudée du câble C tandis que celles 3b sont serties sur l'isolant dudit câble.For this purpose and in the usual way, the tail 2 has two pairs of lugs 3a and 3b, the lugs 3a being crimped on the stripped end of the cable C while those 3b are crimped on the insulation of said cable.

Selon l'invention on surmoule sur l'extrémité de la queue 2 , s'étendant au-delà des pattes 3b, un manchon 4 réalisé en un caoutchouc naturel ou synthétique très souple.According to the invention, a sleeve 4 made of a very flexible natural or synthetic rubber is molded onto the end of the tail 2, extending beyond the legs 3b.

A cet effet et selon un mode de réalisation, l'extrémité de la queue présente une extension 5 convenablement découpée et cambrée qui après sur/moulage du manchon se trouve noyée dans ce dernier et coopère à son maintien.To this end and according to one embodiment, the end of the tail has an extension 5 suitably cut and arched which after over / molding of the sleeve is embedded in the latter and cooperates in its maintenance.

Ce procédé supprime tous les inconvénients cités à propos du dispositif d'étanchéité connu cité ci-dessus.This method eliminates all the drawbacks mentioned with regard to the known sealing device cited above.

Le diamètre externe du manchon est supérieur à celui interne du logement L du connecteur devant le recevoir et celui de son orifice central 6 est légèrement supérieur à celui du câble C.The external diameter of the sleeve is greater than that of the internal housing L of the connector to receive it and that of its central opening 6 is slightly greater than that of the cable C.

De cette façon, le câble traverse librement le manchon qui, ainsi, ne gêne pas la mise en place du câble préalablement à sa fixation sur le contact. Lorsque le manchon pénètre dans le logement L du connecteur la matière le constituant se comprime alors autour du câble en assurant l'étanchéité.In this way, the cable freely crosses the sleeve which, thus, does not interfere with the positioning of the cable prior to its attachment to the contact. When the sleeve enters the housing L of the connector, the material constituting it then compresses around the cable, ensuring sealing.

Pour favoriser la déformation du manchon, la périphérie externe et celle interne de ce dernier présentent des annelures 7.To promote the deformation of the sleeve, the outer periphery and the inner periphery of the latter have grooves 7.

Claims (4)

1-Perfectionnements aux dispositifs permettant d'assurer l'étanchéité des connecteurs électriques du genre de ceux dont l'espace annulaire compris entre le corps isolant et le câble est obturé par un manchon réalisé en un caoutchouc naturel ou synthétique très souple, caractérisés en ce que le manchon est surmoulé sur l'extrémité de la queue du contact.1-Improvements to devices making it possible to ensure the sealing of electrical connectors of the kind of those whose annular space comprised between the insulating body and the cable is closed by a sleeve made of a very flexible natural or synthetic rubber, characterized in that that the sleeve is overmolded on the end of the tail of the contact. 2-Perfectionnements aux dispositifs permettant d'assurer l'étanchéité des connecteurs électriques,selon la revendication 1, caractérisés en ce que des moyens sont prévus sur la queue du contact pour assurer la rétention du manchon surmoulé.2-Improvements to devices for ensuring the tightness of the electrical connectors, according to claim 1, characterized in that means are provided on the tail of the contact to ensure the retention of the overmolded sleeve. 3-Perfectionnements aux dispositifs permettant d'assurer l'étanchéité des connecteurs électriques,selon l'une quelconque des revendications 1 et 2,caractérisés en ce que le diamètre externe du manchon est supérieur à celui du logement devant le recevoir tandis que celui interne est légèrement supérieur à celui du câble devant le traverser.3-Improvements to devices for ensuring the tightness of the electrical connectors, according to any one of claims 1 and 2, characterized in that the external diameter of the sleeve is greater than that of the housing to receive it while the internal one is slightly higher than that of the cable to cross it. 4-Perfectionnements aux dispositifs permettant d'assurer l'étanchéité des connecteurs électriques, selon l'une quelconque des revendications 1 à 3,caractérisés en ce que la périphérie externe et celle interne du manchon présentent des annelures.4-Improvements to devices for ensuring the tightness of the electrical connectors, according to any one of claims 1 to 3, characterized in that the outer periphery and that of the inner sleeve have corrugations.
EP81400431A 1980-03-28 1981-03-20 Devices permitting the sealing of electrical connectors Expired EP0037313B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81400431T ATE10313T1 (en) 1980-03-28 1981-03-20 DEVICES ALLOWING THE SEALING OF ELECTRICAL CONNECTORS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8006963A FR2479582B1 (en) 1980-03-28 1980-03-28 IMPROVEMENTS IN DEVICES FOR SEALING ELECTRICAL CONNECTORS
FR8006963 1980-03-28

Publications (3)

Publication Number Publication Date
EP0037313A2 true EP0037313A2 (en) 1981-10-07
EP0037313A3 EP0037313A3 (en) 1981-12-16
EP0037313B1 EP0037313B1 (en) 1984-11-14

Family

ID=9240237

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81400431A Expired EP0037313B1 (en) 1980-03-28 1981-03-20 Devices permitting the sealing of electrical connectors

Country Status (5)

Country Link
US (1) US4391483A (en)
EP (1) EP0037313B1 (en)
AT (1) ATE10313T1 (en)
DE (1) DE3167140D1 (en)
FR (1) FR2479582B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2543369A2 (en) * 1983-03-24 1984-09-28 Francelco Sa Sealing device for an electrical connector
FR2565424A1 (en) * 1984-05-30 1985-12-06 Silec Liaisons Elec BREAKABLE AND RELEASABLE CONNECTOR BY PULLING, PULLING OUT OR LATERAL SHOCK

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4529257A (en) * 1983-02-22 1985-07-16 International-Telephone & Telegraph Corp. Combined electrical shield and environmental seal for electrical connector
JPH0347261Y2 (en) * 1986-05-30 1991-10-08
US4973266A (en) * 1988-08-09 1990-11-27 Dill Products Incorporated Combined terminal secondary lock and seal
JPH078990U (en) * 1993-07-13 1995-02-07 住友電装株式会社 Insert terminal molding equipment
JPH07201405A (en) * 1993-12-29 1995-08-04 Yazaki Corp Waterproof plug for connector
JP2003045550A (en) * 2001-07-31 2003-02-14 Yazaki Corp Waterproof connector
JP4097589B2 (en) * 2003-10-30 2008-06-11 日本航空電子工業株式会社 Cable connector
DE102004007357B4 (en) * 2004-02-16 2016-10-13 Volkswagen Ag HF plug-in contact with a crimp barrel and crimp barrel for a HF plug-in contact
DE102004034038A1 (en) * 2004-07-13 2006-02-09 Yazaki Europe Ltd., Hemel Hempstead Electrically conductive connection for operating between a cable end piece and a cable end with conductor and insulating sections has a connection end and connector clips

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1283093A (en) * 1969-06-13 1972-07-26 Amp Inc Electrical contacts formed with environmental seals
FR2415375A1 (en) * 1978-01-20 1979-08-17 Nissan Motor WATERPROOF ELECTRICAL CONNECTOR

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3281524A (en) * 1964-04-03 1966-10-25 Thomas & Betts Corp Insulated service splicer assembly
US3708611A (en) * 1972-02-14 1973-01-02 Amp Inc Heat shrinkable preinsulated electrical connector and method of fabrication thereof
US3787796A (en) * 1972-10-17 1974-01-22 Itt Low cost sealed connector and method of making same
US3880487A (en) * 1973-07-20 1975-04-29 Itt Low cost sealed connector
GB1468843A (en) * 1973-08-01 1977-03-30 Amp Inc Sealing members for electrical components
US4311355A (en) * 1978-10-23 1982-01-19 General Motors Corporation Weatherproof electrical connector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1283093A (en) * 1969-06-13 1972-07-26 Amp Inc Electrical contacts formed with environmental seals
FR2415375A1 (en) * 1978-01-20 1979-08-17 Nissan Motor WATERPROOF ELECTRICAL CONNECTOR

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2543369A2 (en) * 1983-03-24 1984-09-28 Francelco Sa Sealing device for an electrical connector
FR2565424A1 (en) * 1984-05-30 1985-12-06 Silec Liaisons Elec BREAKABLE AND RELEASABLE CONNECTOR BY PULLING, PULLING OUT OR LATERAL SHOCK
EP0178953A1 (en) * 1984-05-30 1986-04-23 Societe Industrielle De Liaisons Electriques (Silec) Connector detachable and disengageable by traction, pull or lateral shock

Also Published As

Publication number Publication date
EP0037313A3 (en) 1981-12-16
EP0037313B1 (en) 1984-11-14
ATE10313T1 (en) 1984-11-15
DE3167140D1 (en) 1984-12-20
FR2479582B1 (en) 1985-07-12
FR2479582A1 (en) 1981-10-02
US4391483A (en) 1983-07-05

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