EP2979329B1 - Passage pour contacts, étanche aux fluides - Google Patents

Passage pour contacts, étanche aux fluides Download PDF

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Publication number
EP2979329B1
EP2979329B1 EP14714657.5A EP14714657A EP2979329B1 EP 2979329 B1 EP2979329 B1 EP 2979329B1 EP 14714657 A EP14714657 A EP 14714657A EP 2979329 B1 EP2979329 B1 EP 2979329B1
Authority
EP
European Patent Office
Prior art keywords
fluid
contact lead
tight contact
flat
contact
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.)
Active
Application number
EP14714657.5A
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German (de)
English (en)
Other versions
EP2979329A1 (fr
Inventor
Uwe Pitzul
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.)
Kostal Kontakt Systeme GmbH
Original Assignee
Kostal Kontakt Systeme GmbH
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Application filed by Kostal Kontakt Systeme GmbH filed Critical Kostal Kontakt Systeme GmbH
Publication of EP2979329A1 publication Critical patent/EP2979329A1/fr
Application granted granted Critical
Publication of EP2979329B1 publication Critical patent/EP2979329B1/fr
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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
    • H01R13/5202—Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
    • 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
    • H01R13/521—Sealing between contact members and housing, e.g. sealing insert
    • 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
    • H01R13/5216—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases characterised by the sealing material, e.g. gels or resins

Definitions

  • the invention relates to a fluid-tight contact bushing through a plastic body, with at least one flat contact having one or more cross-sectional changes on an overmolded portion, wherein a permanently elastic sealant between the boundary surfaces of the at least one flat contact and the plastic body is introduced.
  • Such a contact bushing is known from the US Patent Application Publication US 2009/0258521 A1 known.
  • the document shows a flat contact and a connecting line connected to the flat contact, which are each provided in sections with an annular sealing element and encapsulated with an insulating synthetic polymer.
  • the flat contact has at least one section with a circumferentially tapering cross-sectional contour in the axial direction. After encapsulation, the flat contact is displaced in the direction of its taper (s) against the encapsulation, whereby the cavities are closed along the lateral surfaces of the tapered contour and so the contact bushing is sealed along axial sections of the flat contact.
  • the cavities, which are sealed here by the displacement of the flat contact, are caused by shrinkage processes during cooling of the plastic material.
  • thermoplastic materials change their internal structure during cooling, which reduces the volume of material.
  • the plastic body consists of a non-shrinking thermoset material and in which the longitudinal edges of the at least one overmolded flat contact are rounded.
  • a fluid-tight contact feedthrough is thus achieved by the combination of a specially selected encapsulation material with a special shape of the flat contact.
  • thermoset material consists of a non-shrinking thermoset material, and that the sealant is introduced after curing of the thermoset material by an impregnation process.
  • a permanently elastic sealant is understood here as a material which retains elastic properties over long periods and larger temperature ranges.
  • a low-viscosity elastomer base material is used, which then solidifies into the permanently elastic sealant.
  • thermoset material for encapsulation of the at least one flat contact.
  • thermosets contain materials which do not reduce their volume during curing but keep it constant or even increase it.
  • non-shrinking thermoset materials which are also referred to as "zero-decayers", which neither reduce nor increase their volume, have proven suitable. Such materials are found, for example, in the substance groups of epoxy resins, phenolic resins or the so-called bulk molding compounds (BMC).
  • BMC bulk molding compounds
  • a contact bushing consisting of one or more overmolded with a non-shrinking thermoset flat contacts, is placed in a bath with not yet solidified elastomer base, which is then placed under a high pressure, whereby the elastomer base even in narrow capillaries the contact penetration penetrates.
  • thermoset material may optionally be provided to round the longitudinal edges of the at least one flat contact.
  • the flat contact thus has no exactly rectangular cross-section, but a rectangular cross-section with rounded transitions between the cross-sectional sides.
  • This profile is schematic in the FIG. 5 shown.
  • the at least one flat contact also has on a molded portion at its edge portions of one or more rectangular or rounded recesses, as exemplified in the FIGS. 3 and 4 are shown. As a result, the cross-sectional width of the flat contact varies in its axial direction.
  • the recesses cause the at least one flat contact after the encapsulation is positively connected to the Umspritzungsmaterial.
  • the recesses also form in the axial direction of the flat contact a labyrinth structure, which causes a multi-stage pressure drop for the adjacent medium, thereby further improving the sealing properties of the contact bushing.
  • the overmolding material according to the invention does not change its material volume during processing and therefore fills the recesses tightly.
  • the at least one flat contact and the overmolding material have as similar as possible and ideally the same temperature expansion coefficients. As a result, both mechanical stresses and cavity formations, which would impair the sealing properties, can be avoided over a wide temperature range.
  • the non-encapsulated end portions of the at least one flat contact can be treated by a galvanic process, without the encapsulated areas are affected. This allows the overmolded and the non-overmolded areas of the at least one flat contact are provided with different galvanic coatings, which have particularly favorable properties for the respective area.
  • only the non-overmolded regions of the at least one flat contact have a tin or silver coating.
  • the non-surface-treated and optionally provided with a tarnish protection flat contacts can be encapsulated in the production process first, and then the surfaces protruding from the plastic body ends of the flat contacts surface-treated and optionally passivated. Since this only partial sections of the flat contacts are treated, also advantageously a saving of silver and passivation is achieved.
  • FIG. 1 shows a sectional view of a connector housing 6, which has a fluid-tight passage of flat contacts 1 between two chambers 9, 10.
  • the connector housing 6 is made as an injection molded part, wherein for the production of the connector housing 6 sections 4 of the flat contacts 1 were encapsulated with a non-shrinking Duroplastmaterial.
  • FIG. 1 shown two-pole version of a contact bushing is of course purely exemplary.
  • a contact feedthrough according to the invention can have a freely definable number of molded flat contacts 1, in particular also contact feedthroughs, each with a single flat contact 1 or else executable with a higher number of flat contacts 1.
  • the FIG. 2 shows a further example, a contact bushing with seven flat contacts 1, which are arranged in three mutually parallel rows.
  • the contact bushing After encapsulation of the flat contacts 1 with the thermoset material, (not shown in the figures), the contact bushing is placed in a bath with a not yet solidified elastomer base, which is then placed under a high pressure, whereby the elastomer base in the finest remaining spaces (capillaries) is pressed between the plastic body 2 and the flat contacts 1.
  • a vacuum impregnation method in which all moisture and gas inclusions are removed from the capillaries of the contact bushing in a vacuum, so that the elastomer base material can easily penetrate the capillaries as an impregnation.
  • FIGS. 3 and 4 in each case a single flat contact 1, 1 'is shown, which is surrounded on a section 4 by an encapsulation 3.
  • the encapsulation 3 shown as a hatched area schematically illustrates in each case a partial volume of a plastic body 2 which directly surrounds the flat contact 1, 1 ', as is shown in FIGS FIGS. 1 or 2 is shown.
  • the flat contact 1, 1 ' has a plurality of cross-sectional changes, which are in the form of rounded recesses 5a (FIG. FIG. 3 ) or rectangular recesses 5b (FIG. FIG. 4 ) are introduced into the longitudinal sides of the flat contact 1 or 1 '.
  • the encapsulation 3 forms with the recesses 5a and 5b from a positive connection, which due to the "zero Schwinder properties the thermosetting material provided is fluid-tight in a wide temperature and pressure range.
  • non-encapsulated end sections 7a, 7b of the flat contact 1, 1 ' can be treated galvanically; For example, to improve the electrical contact properties are provided with a silver coating.
  • FIG. 5 shows a section from the in the FIG. 4 illustrated flat contact 1 'in a cross-sectional view.
  • One of the recesses 5b by which the cross-sectional width b of the flat contact 1 'varies in the axial direction a, can be seen.
  • Visible are also rounded longitudinal edges 8 of the flat contact 1 ', which are formed on the punching side by the punching tool and on the ridge side by a pre-stamping to the flat contact 1'.
  • the rounded longitudinal edges 8 substantially improve the connection of the flat contact 1 'to Umspritzungsmaterial.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Sealing Material Composition (AREA)
  • Sink And Installation For Waste Water (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Claims (11)

  1. Passage de contact étanche aux fluides à travers un corps en matière synthétique (2), avec au moins un contact plat (1, 1'), qui présente une ou plusieurs modification/s de sections transversales sur une partie enrobée (4), sachant qu'un matériau d'étanchéité à élasticité permanente est appliqué entre les surfaces limites de l'au moins un contact plat (1, 1') et du corps en matière synthétique (2),
    caractérisé en ce que
    le corps en matière synthétique (2) consiste en un matériau duroplastique ne se rétractant pas, et que
    le matériau d'étanchéité est appliqué selon un procédé sous vide ou un procédé d'imprégnation sous pression, après le durcissement du matériau duroplastique.
  2. Passage de contact étanche aux fluides selon la revendication 1, caractérisé en ce que les bords longitudinaux (8) de l'au moins un contact plat (1, 1') sont arrondis,
  3. Passage de contact étanche aux fluides selon la revendication 1, caractérisé en ce que les modifications de sections transversales sont faites par des évidements (5a, 5b).
  4. Passage de contact étanche aux fluides selon la revendication 1, caractérisé en ce que l'au moins un contact plat (1, 1') et le corps en matière synthétique (2) présentent des coefficients de dilatation thermique semblables.
  5. Passage de contact étanche aux fluides selon la revendication 1, caractérisé en ce que le corps en matière synthétique (2) forme un boîtier (6) de connecteur enfichable.
  6. Passage de contact étanche aux fluides selon la revendication 1, caractérisé en ce que le passage de contact forme un connecteur enfichable à plusieurs pôles.
  7. Passage de contact étanche aux fluides selon la revendication 1, caractérisé en ce que les sections finales non enrobées (7a, 7b) de l'au moins un contact plat (1, 1') sont traitées selon un procédé de galvanisation.
  8. Passage de contact étanche aux fluides selon revendication 1 ou 3, caractérisé en ce que: l'au moins un contact plat (1, 1') présente, au moins par sections, un revêtement d'étain ou d'argent.
  9. Passage de contact étanche aux fluides selon la revendication 1, caractérisé en ce que les bords longitudinaux (8) de l'au moins un contact plat (1, 1') sont pré-gravés, côté arête, selon un processus d'estampage e sont ainsi arrondis sur tout le pourtour.
  10. Passage de contact étanche aux fluides selon la revendication 1, caractérisé en ce que le corps en matière synthétique (2) consiste en une résine époxy, une résine de phénol ou en un composite à mouler aux propriétés de rétractabilité nulles..
  11. Passage de contact étanche aux fluides selon la revendication 1, caractérisé en ce que le passage de contact est composant d'un connecteur électrique enfichable, qui est utilisé dans une boîte de vitesse d'un véhicule automobile.
EP14714657.5A 2013-03-30 2014-03-26 Passage pour contacts, étanche aux fluides Active EP2979329B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013005705.1A DE102013005705A1 (de) 2013-03-30 2013-03-30 Fluiddichte Kontaktdurchführung
PCT/EP2014/056100 WO2014161760A1 (fr) 2013-03-30 2014-03-26 Passage pour contacts, étanche aux fluides

Publications (2)

Publication Number Publication Date
EP2979329A1 EP2979329A1 (fr) 2016-02-03
EP2979329B1 true EP2979329B1 (fr) 2018-07-04

Family

ID=50424225

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14714657.5A Active EP2979329B1 (fr) 2013-03-30 2014-03-26 Passage pour contacts, étanche aux fluides

Country Status (10)

Country Link
US (1) US9595783B2 (fr)
EP (1) EP2979329B1 (fr)
JP (1) JP6266747B2 (fr)
KR (1) KR102061385B1 (fr)
CN (1) CN105144496B (fr)
BR (1) BR112015024955B1 (fr)
DE (1) DE102013005705A1 (fr)
ES (1) ES2688427T3 (fr)
MX (1) MX363550B (fr)
WO (1) WO2014161760A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011121133A1 (de) * 2011-12-13 2013-06-13 Kostal Kontakt Systeme Gmbh Fluiddichte Kontaktdurchführung
DE102014008343A1 (de) * 2014-06-04 2015-12-17 Kostal Kontakt Systeme Gmbh Elektrisches Gerät
DE102014223644A1 (de) * 2014-11-19 2016-05-19 Zf Friedrichshafen Ag Steckeranordnung mit zumindest einem Steckerelement
CN107871948A (zh) * 2016-09-27 2018-04-03 泰科电子(上海)有限公司 连接件、电连接器、连接端子集合体及连接件的制造方法
CN106602342B (zh) * 2017-01-09 2019-01-01 广州华凌制冷设备有限公司 插座及其制备方法
JP7293083B2 (ja) * 2019-10-25 2023-06-19 矢崎総業株式会社 導体ユニットの製造方法
CN114701125B (zh) * 2022-03-23 2023-11-24 江苏奥力威传感高科股份有限公司 用于新能源汽车三电产品的耐高温铜排注塑模具及工艺
DE102022132813A1 (de) * 2022-12-09 2024-06-20 HELLA GmbH & Co. KGaA Funktionseinheit für ein Fahrzeug, Fahrzeug sowie Verfahren

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US20040018780A1 (en) * 2002-07-26 2004-01-29 Allen Mott Integrated flange seal electrical connection
US20090258521A1 (en) * 2008-04-11 2009-10-15 Yazaki Corporation Waterproof connector and method for producing the same
US20110316372A1 (en) * 2009-11-06 2011-12-29 Yazaki Corporation Inverter terminal board installed in motor case and packing

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DE4236320C2 (de) * 1992-10-28 1998-07-16 Hella Kg Hueck & Co Gehäuse für ein elektrisches Gerät
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Publication number Priority date Publication date Assignee Title
DE9011269U1 (fr) * 1990-07-27 1991-08-22 Siemens Ag, 8000 Muenchen, De
US20040018780A1 (en) * 2002-07-26 2004-01-29 Allen Mott Integrated flange seal electrical connection
US20090258521A1 (en) * 2008-04-11 2009-10-15 Yazaki Corporation Waterproof connector and method for producing the same
US20110316372A1 (en) * 2009-11-06 2011-12-29 Yazaki Corporation Inverter terminal board installed in motor case and packing

Also Published As

Publication number Publication date
JP2016516282A (ja) 2016-06-02
JP6266747B2 (ja) 2018-01-24
WO2014161760A1 (fr) 2014-10-09
KR20150139872A (ko) 2015-12-14
KR102061385B1 (ko) 2019-12-31
EP2979329A1 (fr) 2016-02-03
US20160020550A1 (en) 2016-01-21
US9595783B2 (en) 2017-03-14
DE102013005705A1 (de) 2014-10-02
ES2688427T3 (es) 2018-11-02
MX363550B (es) 2019-03-27
CN105144496A (zh) 2015-12-09
MX2015013837A (es) 2016-08-08
BR112015024955A2 (pt) 2017-07-18
CN105144496B (zh) 2017-12-15
BR112015024955B1 (pt) 2021-11-30

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