EP0576324B1 - Passe-fils d'étanchéité et connecteur électrique comportant un tel passe-fils - Google Patents

Passe-fils d'étanchéité et connecteur électrique comportant un tel passe-fils Download PDF

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Publication number
EP0576324B1
EP0576324B1 EP93401497A EP93401497A EP0576324B1 EP 0576324 B1 EP0576324 B1 EP 0576324B1 EP 93401497 A EP93401497 A EP 93401497A EP 93401497 A EP93401497 A EP 93401497A EP 0576324 B1 EP0576324 B1 EP 0576324B1
Authority
EP
European Patent Office
Prior art keywords
grommet
passages
chambers
sealing
free
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 - Lifetime
Application number
EP93401497A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0576324A1 (fr
Inventor
Jean-François Ollivier
Dominique Serizay
Didier Louvet
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.)
FCI SA
Original Assignee
Framatome Connectors International SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Framatome Connectors International SAS filed Critical Framatome Connectors International SAS
Publication of EP0576324A1 publication Critical patent/EP0576324A1/fr
Application granted granted Critical
Publication of EP0576324B1 publication Critical patent/EP0576324B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01R13/5208—Sealing means between cable and housing, e.g. grommet having at least two cable receiving openings

Definitions

  • the present invention relates to electrical connectors of the type comprising: an insulating body pierced with receiving passages intended for contacts each provided with a connecting wire; and a rear grommet, often called a "grommet", of elastomeric material, pierced with several individual passages for the wires. It relates more particularly to such grommets intended to prevent the entry of pollutants between the grommet on the one hand, the wires and the insulating body on the other hand.
  • Grommets are widely used at present with individual passages having circular sealing lips resting on the wire.
  • the wires can be of very variable diameter.
  • the grommets are generally made by molding.
  • the complexity of the pins required to form passages having two lips of different diameter makes demolding delicate and leads to a high percentage of scrap. Lips can indeed be destroyed during the demolding and during the insertion of the contacts.
  • this type of grommet can only be produced with a slow-crosslinking elastomeric material, which is only available from a small number of suppliers.
  • EP-A-0 407 863 discloses a similar grommet.
  • the present invention aims in particular to provide a grommet which responds better than those previously known to the requirements of practice, in particular in that it makes it possible to constitute in a simple manner passages having a sealing barrier accepting wires of very variable diameter .
  • the invention provides for this purpose a grommet according to claim 1 or 2 claim 2 being divided into two parts with respect to EP-A 0 407 803.
  • the chambers of free volume can communicate only with one side of the pass -son.
  • the front face of the grommet is secured, generally by gluing, with an insulating connector body, the communication face of the chambers chosen is advantageously the front face; thus each free volume chamber constitutes an air pocket which can be pressurized and the reduction in support on the wire, which would normally result from the absence of material at the location of the chamber, is compensated by the increased gas pressure in the chamber.
  • the pressing pressure on each wire remains substantially constant over the entire periphery of the latter, which maintains the seal.
  • the invention is particularly applicable to connectors in which the insulating body and the grommet are contained in a housing provided with means of coupling with the housing of a complementary connector, a rear cup being able to be provided to repel the grommet forward.
  • the grommet will generally be made of elastomeric material which is very little compressible, but sufficiently deformable so that the material driven back by the presence of a large diameter wire can move towards the chambers by transmitting the forces: in practice this will generally lead to give the elastomer a hardness less than 50 Shore.
  • the connector shown in Figure 1 has a conventional general constitution. It is intended to be coupled to a complementary connector, which may have a grommet of the same constitution.
  • the connector 10 comprises a body 12 of hard electrical insulating material, pierced with passages 14 for receiving contacts 16 each provided with an insulated connecting wire 18.
  • the insulating body 12 of the connector has ten passages 14 arranged in staggered rows, this number not being limiting.
  • the contacts shown are of the pin type and each retained against a shoulder of the insulating body by elastic fingers belonging to a ring 20 immobilized in the body. However, the contacts could as well be of the female type and / or immobilized by other means.
  • the insulating body 12 is contained in a housing 22 provided with means, for example with screw or bayonet, for fixing to the housing of a complementary connector.
  • the rear part of the housing contains a sealing thread 24 of flexible elastomeric material, pierced with individual passages each intended for a wire 18, distributed along the same network as the passages of the insulating body 12.
  • the passages of the grommet 24 shown by way of example in FIGS. 2 to 4 have a rear part 26 having an inlet chamfer 28 of generally conical shape and a front part 30 of large diameter, greater than that of the larger wires. to be inserted, sufficient to accommodate the barrel, and possibly a flange, of the contact engaged in the corresponding passage 14 of the insulating body.
  • the rear part 26 is intended to apply tightly to the wire and to guide it. It therefore has a diameter at rest less than that of the smallest wire intended to be inserted through the grommet 24. Its length from the rear face is generally between half and three-quarters of the length of the grommet. It can however be shorter to avoid capillarity phenomena.
  • the grommet In the grommet are provided free volume or expansion chambers distributed around the passages. In order for the contact pressure of the elastomer on the wire contained in a passage to be approximately regular, it is desirable that these chambers be closed. It is not possible to manufacture such chambers directly by molding. Consequently, in the case of a connector whose the grommet 24 is tightly fixed, for example by gluing, on an insulating body, it suffices that the chambers are blind and open only on the front face. In the case of a round connector where the passages are arranged in a triangular network, the chambers 32 are arranged, in the central part of the grommet, at the center of each mesh of the network of passages. Each of the central passages is therefore surrounded by six chambers 32 arranged at 60 ° from one another around the axis of the passage. On the other hand, the side passages are only surrounded by four chambers.
  • each chamber 32 constituting the expansion and free volume chambers, are intended to absorb the deformation generated by the passage of a wire in the rear part 26 of a passage. For this reason, each chamber 32 can have a rear zone of large diameter, having an axial extent a little smaller than that of the rear parts 26, and a front zone 34 of reduced diameter, just sufficient to allow passage to a molding spindle. .
  • the elastomer constituting the grommet being very flexible, demolding can be carried out by elasticity.
  • the small diameter of the front zone allows material to remain between it and the parts 30 which surround it.
  • the chambers can have a constant cross section.
  • additional holes 36 can be drilled in the front face of the grommet so as to constitute keying elements.
  • An additional hole 38 (or more) can replace an expansion chamber 32.
  • a round connector with ten contacts has been produced with a grommet of the kind described above, intended to constitute a sealed connection on wires having a diameter between 1.8 and 2.4 mm.
  • the individual passages were distributed in a triangular network having a pitch of 3.3 mm and the diameter at rest of the rear parts was 0.83 mm.
  • the free volume chambers were distributed in a hexagonal network with a pitch of 2.04 mm.
  • the chambers of free volume, with a diameter of 1.30 mm opened out through a front zone of 0.6 mm in diameter.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Insulating Bodies (AREA)
EP93401497A 1992-06-22 1993-06-11 Passe-fils d'étanchéité et connecteur électrique comportant un tel passe-fils Expired - Lifetime EP0576324B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9207584A FR2692728A1 (fr) 1992-06-22 1992-06-22 Passe-fils d'étanchéité et connecteurs électriques comportant un tel passe-fils.
FR9207584 1992-06-22

Publications (2)

Publication Number Publication Date
EP0576324A1 EP0576324A1 (fr) 1993-12-29
EP0576324B1 true EP0576324B1 (fr) 1996-01-03

Family

ID=9431011

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93401497A Expired - Lifetime EP0576324B1 (fr) 1992-06-22 1993-06-11 Passe-fils d'étanchéité et connecteur électrique comportant un tel passe-fils

Country Status (4)

Country Link
US (1) US6000966A (fi)
EP (1) EP0576324B1 (fi)
DE (1) DE69301199T2 (fi)
FR (1) FR2692728A1 (fi)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11195448A (ja) * 1997-12-26 1999-07-21 Amp Japan Ltd 防水型電気コネクタ
FR2792120B1 (fr) * 1999-04-08 2001-05-25 Framatome Connectors Int Joint d'etancheite a passages multiples pour un connecteur electrique de faisceaux de cables
JP3755644B2 (ja) * 2000-11-01 2006-03-15 住友電装株式会社 コネクタ
DE10216731B3 (de) * 2002-04-16 2004-01-08 Hydac Electronic Gmbh Elektromagnetische Schaltvorrichtung
FR2843491B1 (fr) * 2002-08-09 2006-09-08 Amphenol Air Lb Connecteur pour des conducteurs electriques comportant un embout de contact et de verrouillage a leur extremite a connecter
FR2886475B1 (fr) * 2005-05-27 2011-10-28 Amphenol Air Lb Connecteur blinde pour conducteurs electriques.
JP2009536426A (ja) * 2006-05-08 2009-10-08 マルチ−ホールディング アクチェンゲゼルシャフト プラグコネクタ
DE102012203896A1 (de) * 2012-03-13 2013-09-19 Robert Bosch Gmbh Mattendichtung für Steckverbinder
WO2018144428A1 (en) 2017-02-01 2018-08-09 Horton, Inc. Electromagnetic coil connection assembly and associated method
BE1025310B1 (de) * 2017-06-12 2019-01-24 Phoenix Contact Gmbh & Co. Kg Steckverbinderteil mit verstemmten Kontaktelementen

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB965353A (en) * 1962-12-13 1964-07-29 Amphenol Borg Electronics Corp Electrical connectors
US3260983A (en) * 1963-01-14 1966-07-12 Elastic Stop Nut Corp Waterproof electrical junctions
US3477061A (en) * 1966-06-20 1969-11-04 Bunker Ramo Contact retention device
US3638165A (en) * 1970-06-29 1972-01-25 Itt Electrical connector contact retention assembly
CA1052881A (en) * 1974-10-02 1979-04-17 Bendix Corporation (The) Moisture sealing grommet for an electrical connector
US4406507A (en) * 1981-06-30 1983-09-27 The Bendix Corporation Electrical connector insert
US4386816A (en) * 1981-06-30 1983-06-07 The Bendix Corporation Electrical connector insert assembly
US4544220A (en) * 1983-12-28 1985-10-01 Amp Incorporated Connector having means for positively seating contacts
DE3566853D1 (en) * 1984-06-29 1989-01-19 Amp Inc Retention article for electrical contacts
US4648672A (en) * 1985-05-17 1987-03-10 Amp Incorporated Wire seal
WO1987005157A1 (en) * 1986-02-25 1987-08-27 Thomas & Betts Corporation Housing assembly for water seal connector
US4758182A (en) * 1986-10-16 1988-07-19 Shinagawa Jidosha Densen Co. Ltd. Electric connector
FR2626720A1 (fr) * 1988-02-01 1989-08-04 Souriau & Cie Connecteur electrique a plusieurs elements de contact
JPH0343972A (ja) * 1989-07-10 1991-02-25 Amp Japan Ltd 電気コネクタ用防水体
DE9014856U1 (de) * 1990-10-26 1991-01-10 Contact GmbH Elektrische Bauelemente, 70565 Stuttgart Isolierkörper für elektrische Kontakte

Also Published As

Publication number Publication date
EP0576324A1 (fr) 1993-12-29
FR2692728A1 (fr) 1993-12-24
US6000966A (en) 1999-12-14
DE69301199D1 (de) 1996-02-15
DE69301199T2 (de) 1996-05-23
FR2692728B1 (fi) 1997-02-28

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