EP0335721A2 - Connecteur électrique étanche à l'eau - Google Patents

Connecteur électrique étanche à l'eau Download PDF

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Publication number
EP0335721A2
EP0335721A2 EP89303160A EP89303160A EP0335721A2 EP 0335721 A2 EP0335721 A2 EP 0335721A2 EP 89303160 A EP89303160 A EP 89303160A EP 89303160 A EP89303160 A EP 89303160A EP 0335721 A2 EP0335721 A2 EP 0335721A2
Authority
EP
European Patent Office
Prior art keywords
rubber gasket
cap
connector housing
outer limit
connector
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.)
Withdrawn
Application number
EP89303160A
Other languages
German (de)
English (en)
Other versions
EP0335721A3 (fr
Inventor
Yoshihiro Nakazawa
Hiroshi Kano
Yoshifumi Mochizuki
Masahiro Sakano
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.)
Molex LLC
Original Assignee
Molex LLC
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 Molex LLC filed Critical Molex LLC
Publication of EP0335721A2 publication Critical patent/EP0335721A2/fr
Publication of EP0335721A3 publication Critical patent/EP0335721A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • H01R13/5219—Sealing means between coupling parts, e.g. interfacial seal
    • H01R13/5221—Sealing means between coupling parts, e.g. interfacial seal having cable sealing means

Definitions

  • the present invention relates to a waterproof electric connector, and more particularly to a waterproof electric connector for use in connecting electric and electronic apparatuses to an electric power supply in a car.
  • waterproof and dustproof electric connectors are usually used.
  • a waterproof and dustproof electric connector comprises a connector housing, a cap detachably fitted on the housing, one or more terminal pieces of receptacle type, and a rubber gasket to prevent water from going through the gap between the inner wall of the housing and cap and the insultaing sheath of an insulated wire, which is connected to the terminal piece in the housing.
  • a rubber gasket to prevent water from going through the gap between the inner wall of the housing and cap and the insultaing sheath of an insulated wire, which is connected to the terminal piece in the housing.
  • the stripped conductor end of an insulated wire is connected to a terminal piece.
  • the insulating sheath of the insulated wire is inserted in an annular rubber gasket, and then the annular rubber gasket is pressed in a selected position in the cap or housing to cause its deformation, thereby causing in the rubber gasket, the resilient stress strong enough to cause positive sealing effect at the interface between the insulating sheath of the insulated wire and the inner wall of the housing or cap, and at the same time at the joint between the cap and the housing.
  • the degree by which an annular rubber gasket (which is fitted around an insulated wire) is pinched and deformed depends on the size of the annular gasket relative to the size of the portions of the housing and cap which apply a pressing force to the annular gasket. Specifically, the degree of deformation will increase with the increase of the size of the annular gasket relative to the size of the pinching portions, and the sealing effect will be increased with the increase of the deformation of the annular gasket. If the sealing effect is increased only with recourse to this, the assembling work will be increasingly difficult.
  • the insulating sheath of the wire is inserted into the gasket, and then the housing and the cap are arranged so as to permit the insulated wire with the gasket therearound to be laid in the housing and the cap thus arranged. Thereafter, the housing and the cap are applied to the gasket by pressure so that these parts are integrally assembled.
  • the use of a gasket of an increased size makes the assembling work difficult.
  • One object of the present invention is to provide an electric connector structure which permits sufficient gasket deformation enough to cause perfect sealing effect, and at the same time easy assembling of parts.
  • a waterproof electric connector of the type which comprises: a connector housing; a cap to be detachably fixed to said connector housing; one or more terminal pieces to be connected to the conductor of an insulated wire in said connector housing; and a rubber gasket to be pressed between said connector housing and said cap to encircle the insulator sheath of said insulated wire, is improved according to the present invention in that: said rubber gasket has a recess made on at least one of its sides on which said rubber gasket faces said connector housing and said cap to accomodate the outer limit of the rear end of said connector housing and the outer limit of the inner surface of said cap whereby the stress which will be caused in said rubber gasket by press-fitting said cap on said connector housing, will cause positive sealing effect at the sealing interfaces between said insulated wire and said rubber gasket and between said cap and said rubber gasket.
  • the outer limit of the rear end of the connector housing and/or the outer limit of the inner surface of the cap may have a tapered or chamfered end whereas the recess of the rubber gasket may have a corresponding tapered or chamfered shape, whereby the stress which will be caused in the rubber gasket by press-fitting the tapered ends of the outer limit of the rear end of the connector housing and/or the tapered and chamfered ends of the outer limit of the inner surface of the cap into the corresponding tapered and/or chamfered recesses of the rubber gasket will cause positive sealing effect at the interface between the insulated wire and the rubber gasket and between the cap and the rubber gasket.
  • the recess which is made on at least one of the sides on which the rubber gasket faces the connector housing and the cap, accomodates the outer limit of the rear end of the cap.
  • a stress will be caused in the rubber gasket, when the cap is press-fitted on the connector housing, and the stress will cause positive sealing effect at the sealing interfaces between the insulated wire and the rubber gasket and between the cap and the rubber gasket.
  • the outer limit of the rear end of the connector housing and/or the outer limit of the inner surface of the cap may have a tapered or chamfered end whereas the recess and/or of the rubber gasket may have a corresponding tapered or chamfered shape. Then, the stress which will be caused in the rubber gasket by press-fitting the tapered ends of the outer limit of the rear end of the connector housing and/or the tapered and chamfered ends of the outer limit of the inner surface of the cap into the corresponding tapered and/or chamfered recesses and/or of the rubber gasket, will cause positive sealing effect at the interface between the insulated wire and the rubber gasket and between the cap and the rubber gasket.
  • the outer limit of the rear end of the connector housing and/or the outer limit of the inner surface of the cap are pushed in the corresponding recesses of the rubber gasket.
  • the rubber gasket is deformed at the interfaces between the conductor and the rubber gasket and between the cap and the rubber gasket to cause the appropriate distribution of stress in the rubber gasket, thus causing positive water-tight sealing effect at such interfaces.
  • Figs. 1 to 4 show a 3-pole type waterproof electric connector having three receptacle press contact terminal pieces arranged at regular intervals.
  • the connector housing is shown as having three cells 2A, 2B and 2C for accomodating receptacle type terminal pieces 3 (only one terminal piece 3 shown in the central cell).
  • Each terminal piece 3 has a conductor pinching portion 4 and an insulation pinching portion 5, and as shown, the stripped end of the insulating wire 6 is a pinched by the conductor pinching portion 4 whereas the insulation sheath of the wire is pinched by the insulation pinching portion 5.
  • the gasket 10 is made of for instance, silicone rubber, and it has three apertures 9A, 9B and 9C at regular intervals for inserting and holding the insulated wires 8.
  • the cap 12 has three apertures 11A, 11B and 11C at regular intervals for inserting and holding the insulated wires 8.
  • the gasket 10 is sandwiched between the cap 12 and the connector housing 1 with the three wires passing through the alligned apertures of the cap 12 and the gasket 10.
  • the rubber gasket 10 has recesses 17 and 19 on its sides 13 and 14 on which the rubber gasket 10 faces the connector housing 1 and the cap 12 to accomodate the outer limit 23 of the rear end of the connector housing 1 and the outer limit 27 of the inner surface of the cap 12.
  • Figs. 5 to 9 show the rubber gasket 10. It has, in its surface 13 facing the connector housing 1, recesses 17 made between the inner circumferencial surface 15 of each aperture 9A, 9B or 9C (which inner circumferencial surface 15 contacts the insulation 8 of the wire) and the outer circumferencial surface 16 of the gasket. Specifically, a first recess 17a encircles the aperture 9A; a second recess 17b encircles the aperture 9B; and a third recess 17c encircles the aperture 9C. Adjacent recesses communicate with each other to form a common recess. As seen from Fig. 9, which is a section taken along the line C-C′ in Fig. 7, the recess 17 has a tapering shape as indicated at 18.
  • the gasket 10 has, in its surface 14 facing the cap 12, a recess 19 made between the inner circumferencial surface 15 of each aperture 9A, 9B or 9C and the outer circumferencial surface 16 of the gasket 10. Specifically, a first recess 19a encircles the aperture 9A; a second recess 19b encircles the aperture 9B; and a third recess 19c encircles the aperture 9C. Adjacent recesses communicate with each other to form a common recess. As seen from Fig.
  • a slant wall 22 is formed at the place where the circumferencial wall 21 and the flat surface 20 of the gasket 10 would cross if they were extended, and the communicating recess portions 19d and 19e have a conical shape in section, which is defined by the flat surface 20 and the slant surface 22.
  • the outer limit of the rear end of the connector housing and the outer limit of the inner surface of the cap are pushed into these recesses 17 and 19 the rubber gasket 10.
  • the outer limit 23 of the rear end of the connector housing 1 is described with reference to Fig. 10 to 14.
  • the outer limit 23 of the connector housing 1 is formed between the outer circumferencial surface 24 and the inner circumferencial surface 25 each of the terminal insertion spaces 2A, 2B and 2C.
  • the outer limit 23 is formed around each of these terminal insertion space 2A, 2B and 2C as indicated at 23a, 23b and 23c. Adjacent outer limits are connected to form a common outer limit 23.
  • the outer limit 23 of the connector housing 1 has a tapering shape 26 to fit in the countersink 17 of the rubber gasket 10.
  • the slant wall 26 of the outer limit 23 of the connection housing has the same angle of inclination as the inner wall 18 of the countersink 17 of the rubber gasket 10.
  • Figs. 15 to 20 show the cap 12, particularly the outer limit 27 of the inner surface of the cap 12.
  • the cap 12 has a flange 12′ integrally connected to its outer edge to grip the end of a male connector housing, which is later described.
  • the outer limit 27 of the inner surface of the cap 12 is encircled by the flange 12′ of the cap 12, and is formed around each aperture 11A, 11B and 11C. Specifically, the outer limit encircling the aperture 11A is indicated at 27a; the outer limit encircling the aperture 11B is indicated at 27b; and the outer limit encircling the aperture 11C is indicated at 27c. Adjacent outer limits are connected together to form a common outer limit 27.
  • a slant wall 29 is formed at the place at which the inner circumferencial wall 28 of each of the apertures 11A, 11B and 11C and the inner flat surface of the cap 12 would cross to each other if they were extended.
  • the adjoining portions 27d and 27e have a conical shape 30.
  • the insulation sheath 8 of an insulated wire 6 is inserted in the cap 12, the gasket 10 and the connector housing 1 one after another. Then, the surface 13 of the gasket 10 faces the rear end of the connector housing 1, and the surface 14 of the gasket 10 faces the cap 12.
  • These parts are arranged so as to facilitate subsequent assembling and nesting. Specifically, they are arranged so that the outer limit 23 of the rear end of the connector housing 1 faces the countersink 17 of the gasket 10 and the outer limit 27 of the cap 12 faces the countersink 19 of the gasket 10.
  • each compartment 2A, 2B or 2C has allignment slots 31 made on opposit sides of the entrance of the compartment, and each terminal piece is fitted in the space defined by the allignment slots 31.
  • the tapered portion 26 of the outer limit 23a, 23b and 23c of the connector housing 1 is pushed against the inner slant wall 18 of the countersink 17a, 17b and 17c of the rubber gasket 10.
  • the tapered portion of the outer limit 27a, 27b and 27c of the cap is pushed against the inner slant wall of the countersink 19a, 19b and 19c of the rubber gasket 10.
  • the pressure is transmitted in the rubber gasket 10 to cause the rubber gasket 10 to push its inner circumferential surface 32 against the insulation sheath 8 of the insulated wire 6 and, at the same time, push its outer circumferential surface 33 against the inner wall 28 of the cap 12, thereby substantially increasing the sealing effect at these intersurfaces.
  • the waterproof electric connector structure facilitates the nesting of the cap 12, rubber gasket 10 and connector housing 1 into an integral form, and at the same time, improving the sealing effect to assure the assemblage of perfect waterproofness at its discontinuous areas between adjoining parts.
  • the countersinks 17, 19 of the opposite surfaces of the rubber gasket 10 have inclined inner walls 18, 22 whereas the outerlimits 23, 27 of the cap 12 and connector housing 1 have similar inclined outer walls 26, 29.
  • the rubber gasket 10 has recesses or countersinks on its opposite surface 13 and 14 to accomodate the outer limits of the cap 12 and connector housing 1.
  • the rubber gasket 10 may have recess or countersink on one of its opposite surfaces 13 and 14 to accomodate the outer limit of the corresponding counter part. Then, the flat surface of the rubber gasket 10 is pushed against the inner surface of the cap or the rear end of the connector housing, and they are tightly engaged by an appropriate means.
  • the rubber gasket 10 has as many aperatures as the insulated wires. This is most preferable because each insulated wire is held with the gripping force of same strength. If occasion demands, however, a waterproof electric connector may have a single aperture and associated recess and projection in its cap and rubber gasket to hold a bundle of insulated wires.
  • the waterproof electric connector described above uses three receptacle type terminal pieces. Male or plug type terminal pieces or conventional press-contact type terminal pieces may be used.
  • a male connector to be nested with the electric connector described above is shown in Figs. 22 to 26 as having a housing 34 and plug terminal pieces 36A, 36B and 36C arranged at regular intervals in the housing 34.
  • Each plug terminal piece has a catch hole 38 to catch the raised portion 37 of the terminal piece 3 when the male connector is inserted in the female connector.
  • the male connector housing 34 has projections 42 on its step-shaped end 40 to fit in the corresponding apertures 41 of the cap 12. The step-shaped rise is indicated at 39.
  • Figs. 27 to 30 show the manner in which the male connector is nested with the water proof electric connector.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
EP19890303160 1988-03-31 1989-03-30 Connecteur électrique étanche à l'eau Withdrawn EP0335721A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP43445/88U 1988-03-31
JP1988043445U JPH01146478U (fr) 1988-03-31 1988-03-31

Publications (2)

Publication Number Publication Date
EP0335721A2 true EP0335721A2 (fr) 1989-10-04
EP0335721A3 EP0335721A3 (fr) 1991-05-02

Family

ID=12663901

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890303160 Withdrawn EP0335721A3 (fr) 1988-03-31 1989-03-30 Connecteur électrique étanche à l'eau

Country Status (2)

Country Link
EP (1) EP0335721A3 (fr)
JP (1) JPH01146478U (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0440417A1 (fr) * 1990-01-29 1991-08-07 THOMAS & BETTS CORPORATION Connecteur électrique étanche et bague d'étanchéité pour celui-ci
US5100335A (en) * 1991-01-28 1992-03-31 Thomas & Betts Corporation Sealed electrical connector and seal ring therefor
FR2673048A1 (fr) * 1991-02-15 1992-08-21 Francelo Connecteur electrique etanche a passe-fils.
WO1992015133A1 (fr) * 1991-02-15 1992-09-03 Francelco Connecteur electrique a passe-fils d'etancheite
EP0529463A2 (fr) * 1991-08-28 1993-03-03 The Whitaker Corporation Dispositifs d'étanchéité pour un connecteur électrique
EP0625807A2 (fr) * 1993-05-21 1994-11-23 Framatome Connectors International S.A. Connecteur électrique
WO1996013880A1 (fr) * 1994-10-31 1996-05-09 Framatome Connectors International S.A. Unite d'etancheite conçue notamment pour des connecteurs electriques
US5518419A (en) * 1994-11-28 1996-05-21 Ford Motor Company Separable low profile connector for an automotive transmission
US5596176A (en) * 1993-11-03 1997-01-21 Framatome Connectors International Cable sealing arrangements
WO1998037597A1 (fr) * 1997-02-19 1998-08-27 The Whitaker Corporation Connecteur electrique avec element d'etancheite commun, et element d'etancheite commun
EP1059697A2 (fr) * 1999-06-10 2000-12-13 Yazaki Corporation Connecteur étanche
US6739908B2 (en) * 2001-03-12 2004-05-25 Yazaki Corporation Waterproof connector and method of inserting terminals in waterproof connector
WO2008122844A1 (fr) * 2007-04-06 2008-10-16 Fci Connecteur électrique et son procédé de fabrication
WO2009136221A1 (fr) * 2008-05-07 2009-11-12 Fci Connecteur électrique, joint d'étanchéité compressible, boîtier et grille pour un tel connecteur
DE102005036997B4 (de) * 2004-08-18 2012-08-23 Sumitomo Wiring Systems, Ltd. Wasserdichter Verbinder

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2785685B2 (ja) * 1994-04-18 1998-08-13 住友電装株式会社 シール部材
JP2001110504A (ja) * 1999-10-13 2001-04-20 Yazaki Corp 防水コネクタ

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033031A2 (fr) 1979-12-26 1981-08-05 AMP INCORPORATED (a New Jersey corporation) Assemblage d'un connecteur électrique rendu étanche

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5323583U (fr) * 1976-08-06 1978-02-28
CA1196402A (fr) * 1982-04-14 1985-11-05 Amp Incorporated Connecteur electrique scelle
US4456320A (en) * 1982-07-28 1984-06-26 The Bendix Corporation Sealing ring for an electrical connector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033031A2 (fr) 1979-12-26 1981-08-05 AMP INCORPORATED (a New Jersey corporation) Assemblage d'un connecteur électrique rendu étanche

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0440417A1 (fr) * 1990-01-29 1991-08-07 THOMAS & BETTS CORPORATION Connecteur électrique étanche et bague d'étanchéité pour celui-ci
AU630270B2 (en) * 1990-01-29 1992-10-22 Thomas & Betts International, Inc. Sealed electrical connector and seal ring therefor
US5100335A (en) * 1991-01-28 1992-03-31 Thomas & Betts Corporation Sealed electrical connector and seal ring therefor
FR2673048A1 (fr) * 1991-02-15 1992-08-21 Francelo Connecteur electrique etanche a passe-fils.
WO1992015133A1 (fr) * 1991-02-15 1992-09-03 Francelco Connecteur electrique a passe-fils d'etancheite
US5299949A (en) * 1991-02-15 1994-04-05 Francelco Electrical connector with sealing grommet
EP0529463A2 (fr) * 1991-08-28 1993-03-03 The Whitaker Corporation Dispositifs d'étanchéité pour un connecteur électrique
EP0529463A3 (en) * 1991-08-28 1993-05-12 The Whitaker Corporation Seals for an electrical connector
EP0625807A2 (fr) * 1993-05-21 1994-11-23 Framatome Connectors International S.A. Connecteur électrique
EP0625807A3 (fr) * 1993-05-21 1996-01-10 Framatome Connectors Int Connecteur électrique.
US5596176A (en) * 1993-11-03 1997-01-21 Framatome Connectors International Cable sealing arrangements
US6217385B1 (en) 1994-10-31 2001-04-17 Framatome Connectors International S.A. Sealing unit, particularly for electric connectors
WO1996013880A1 (fr) * 1994-10-31 1996-05-09 Framatome Connectors International S.A. Unite d'etancheite conçue notamment pour des connecteurs electriques
US5518419A (en) * 1994-11-28 1996-05-21 Ford Motor Company Separable low profile connector for an automotive transmission
WO1998037597A1 (fr) * 1997-02-19 1998-08-27 The Whitaker Corporation Connecteur electrique avec element d'etancheite commun, et element d'etancheite commun
US6095860A (en) * 1997-02-19 2000-08-01 The Whitaker Corporation Electrical connector with a family seal, and family seal
EP1059697A3 (fr) * 1999-06-10 2001-08-29 Yazaki Corporation Connecteur étanche
EP1059697A2 (fr) * 1999-06-10 2000-12-13 Yazaki Corporation Connecteur étanche
US6375500B1 (en) 1999-06-10 2002-04-23 Yazaki Corporation Water proof connector having a seal confirmation access window
US6739908B2 (en) * 2001-03-12 2004-05-25 Yazaki Corporation Waterproof connector and method of inserting terminals in waterproof connector
DE102005036997B4 (de) * 2004-08-18 2012-08-23 Sumitomo Wiring Systems, Ltd. Wasserdichter Verbinder
WO2008122844A1 (fr) * 2007-04-06 2008-10-16 Fci Connecteur électrique et son procédé de fabrication
WO2009136221A1 (fr) * 2008-05-07 2009-11-12 Fci Connecteur électrique, joint d'étanchéité compressible, boîtier et grille pour un tel connecteur
CN102057538A (zh) * 2008-05-07 2011-05-11 Fci公司 电连接器和用于该连接器的密封垫接头、壳体和栅格
CN102057538B (zh) * 2008-05-07 2013-07-24 富加宜汽车控股公司 电连接器和用于该连接器的密封垫接头、壳体和栅格

Also Published As

Publication number Publication date
EP0335721A3 (fr) 1991-05-02
JPH01146478U (fr) 1989-10-09

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