EP2621026B1 - Abgedichteter Stecker Verfahren zur Abdichtung eines Steckers - Google Patents

Abgedichteter Stecker Verfahren zur Abdichtung eines Steckers Download PDF

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Publication number
EP2621026B1
EP2621026B1 EP13152448.0A EP13152448A EP2621026B1 EP 2621026 B1 EP2621026 B1 EP 2621026B1 EP 13152448 A EP13152448 A EP 13152448A EP 2621026 B1 EP2621026 B1 EP 2621026B1
Authority
EP
European Patent Office
Prior art keywords
adhesive
plug
connector
current path
silicone
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.)
Not-in-force
Application number
EP13152448.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2621026A1 (de
Inventor
Liebhart Zaiser
Thomas Wenzler
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.)
Robert Bosch GmbH
Eugen Forschner GmbH
Original Assignee
Robert Bosch GmbH
Eugen Forschner GmbH
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 Robert Bosch GmbH, Eugen Forschner GmbH filed Critical Robert Bosch GmbH
Priority to PL13152448T priority Critical patent/PL2621026T3/pl
Publication of EP2621026A1 publication Critical patent/EP2621026A1/de
Application granted granted Critical
Publication of EP2621026B1 publication Critical patent/EP2621026B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/405—Securing in non-demountable manner, e.g. moulding, riveting
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/005—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for making dustproof, splashproof, drip-proof, waterproof, or flameproof connection, coupling, or casing

Definitions

  • the invention relates to a sealed plug according to the preamble of patent claim 1 and a method for sealing a plug according to the preamble of claim 12.
  • Control elements of the hydraulics such as valves, can be actuated electromagnetically.
  • the valve has an encapsulated electromagnet with a coil, via the energization of which an armature is moved, which carries a valve piston. In this way, a position of the valve piston can be precisely adjusted.
  • a housing passing through the plug is provided on the housing of the electromagnet, which preferably consists of plastic and molded onto the housing. With a current source connectable current paths or pins of the plug pass through a plug bottom of the plug from an outside to an inside of the housing, where they are connected to the coil.
  • the design text DE 1 148 613 from 1963 recommends as sealing compound for the plug to be cast silicone, which should have the tendency to adhere to the touched materials.
  • sticky petroleum compounds or rubber or epoxy compounds are suggested.
  • a disadvantage of the proposed solutions is that the substances proposed as sealant materials are not specified.
  • a disadvantage of the proposed epoxy compounds is that they are subject to shrinkage, especially at a thermal cycling, which can lead to a separation and thus to leakage at a boundary layer between pin and sealant.
  • US-A-6290239 discloses a connector according to the preamble of claim 1.
  • the invention has for its object to provide a plug with an improved tightness against ingress of moisture.
  • the plug according to the invention for the electrical supply of an aggregate of the hydraulic system can be arranged on a housing of this unit.
  • a plug base of the plug is penetrated by at least one current path.
  • This passage of the at least one flow path through the plug base is sealed with a silicone-containing compound.
  • this mass is an adhesive, and has a high adhesion. This strong adhesion can ensure that under adverse operating conditions in which the current path is moved, the sealing mass still adheres to the current path. A detachment from the flow path, i. a gap formation between the flow path and the sealant is thus prevented. This allows the unit to be permanently sealed against moisture. In connection with the high adhesiveness of the mass or the adhesive is preferred when the adhesive has a high flexibility.
  • Another advantage of the adhesive used is that at a thermal cycling of the connector, which leads to stresses in the boundary layer between Stormbahn and adhesive due to different thermal expansion coefficients of the sealant or the adhesive and the current path, the tightness of the plug is still maintained.
  • Plug base is understood to be a region of a housing of the plug through which a current path passes.
  • the unit is preferably connected via the plug with a power source or an electrical control unit.
  • the unit is a coil of an electromagnet or a control cabinet. It is preferred if via the solenoid, a valve, in particular a pilot valve of the mobile hydraulics, can be actuated.
  • the plug base of the plug is filled with the adhesive at least in a region of the passage of the at least one flow path.
  • the pouring is manufacturing technology little expensive, so that the seal is inexpensive to produce.
  • the silicone-containing adhesive proves to be very advantageous, since due to its low surface energy in a very narrow Gap penetrates, so that it is sealingly filled with the adhesive or filled.
  • the adhesive is one-component, which represents a reduction of the expense compared to a use of two- or multi-component adhesives or adhesives with catalyst.
  • the adhesive is light-cured, in particular UV-light-cured.
  • the adhesive may be moisture cured.
  • the adhesive is primarily light-cured or UV-light-cured and secondarily moisture-cured.
  • the adhesive is in a region near the plug bottom, i. near the passage of the current path through the plug base or the plug housing, tough or viscous.
  • the sealing adhesive has a higher elasticity and is also more adhesive.
  • an insulation resistance via the sealed passage of the at least one current path at an applied voltage of 500 volts has a value greater than 0.5 M ⁇ (megohms). This value is particularly preferably about 1 M ⁇ .
  • a coil winding is arranged on this, so that a device-particularly compact and space-saving arrangement of a coil of an electromagnet is possible.
  • the plug according to the invention is arranged, in particular molded, on a housing of an aggregate of the hydraulic system for the electrical supply of the unit.
  • the unit is preferably a coil of an electromagnet or a control cabinet, wherein via the solenoid preferably a valve, in particular a pilot valve of the mobile hydraulics can be actuated.
  • a valve in particular a pilot valve of the mobile hydraulics
  • the housing in the mobile hydraulics, when the housing is exposed to changing operating conditions over water and especially under water. This applies, for example, to mobile working machines that are used in flood protection to rescue people. It may happen that electrically or electrohydraulically actuated valves or their electromagnets get under water. The tightness of their plugs for power supply is crucial.
  • a method for sealing a plug bottom of a plug which is passed through by at least one current path, or for sealing a passage of the at least one current path through the plug base, wherein an aggregate of the hydraulics can be supplied electrically via the plug comprises the step of: sealing the passage with a plug silicone-containing adhesive.
  • the sealing is preferably carried out by filling a gap formed in a region of the passage between the at least one flow path and the plug base. This gap may be formed in particular as a gap or as an annular gap.
  • the sealing or the filling can be done in particular by pouring the plug base with the silicone-containing adhesive in the region of the passage of the at least one current path through the plug base.
  • the adhesive Due to the strong adhesion of the adhesive, in particular to the flow path and a surface of the plug base or of the passage, it can be ensured that under disadvantageous operating conditions in which the flow path is moved, the sealing mass of the adhesive still adheres to the flow path. A detachment of the adhesive from the flow path, or a gap formation between the flow path and the sealant, is thus prevented. As a result, the unit can be permanently sealed in the area of the current path against ingress of moisture. In conjunction with the high adhesiveness of the adhesive, it is preferred if the adhesive has high flexibility or elasticity. In this way, the adhesion of the adhesive to the current path is further improved. Another advantage of the adhesive used is that at a thermal cycling of the plug, which leads to stresses in the region of the boundary layer between the current path and adhesive due to different thermal expansion coefficients of the sealant or the adhesive and the current path, the tightness of the plug is still maintained.
  • silicones are advantageous to use as an adhesive, since they have a low surface energy in the liquid state and can therefore very well wet the plug base to be sealed and the current path to be sealed.
  • the casting of the plug base of the plug is a procedurally well controlled step. However, it must be ensured that the components to be glued or sealed the current path and the plug base are clean.
  • the silicone-containing adhesive is preferably one-component in order to keep the procedural effort low. In this case, the adhesive preferably has an acetoxy group.
  • the silicone-containing adhesive is cured by light, in particular by ultraviolet light.
  • the method according to the invention after or during the step of curing the silicone-containing adhesive by light as a further step, a curing of the silicone-containing adhesive by moisture, in particular by atmospheric moisture or water vapor, on. This ensures that areas that are not accessible or accessible during curing with light, harden by the naturally occurring in the ambient air humidity.
  • FIG. 1 shows a plug 1 for powering a coil of an electromagnet (not shown), via which a pilot valve of the mobile hydraulics can be controlled in a front view.
  • the plug 1 is made of plastic as an injection molded part. It has a substantially circular cylindrical plug housing 2, which is provided for arrangement in a corresponding outbreak of a housing of the electromagnet (not shown).
  • the connector housing 2 has an end face 4, from which, the viewer of the FIG. 1 opposite, a connector device 6 extends.
  • the connector device 6 has an approximately rectangular connector collar 8 with rounded corners.
  • two current paths 12 configured as pins and four smaller spacers 14 are symmetrical to a vertical axis 16 of the plug 1 arranged.
  • a Verrastungslic 20 is arranged on the plug collar 8.
  • the Verrastungslic 20 has at its in FIG. 1 lower, open side on a guide groove 22, which on both sides to the vertical axis 16 in the direction of a FIG. 1 upper side of the plug 1 is further recessed, and in this way forms a Verrastungsnut 24.
  • the plug base 10 of the plug 1 is in this case filled with an adhesive 26, that the spacers 14 and the current paths 12 are each connected to its radially outer surface cohesively with the adhesive 26.
  • FIG. 2 shows the embodiment of the plug according to FIG. 1 in a longitudinal section.
  • the plug 1 extends in FIG. 2 from the plug collar 8 right to the left-side connector housing 2. Approximately in the middle between the plug base 10 is arranged. Radially circumferentially on the plug base 10, an O-ring groove 28 is formed, which is provided for receiving an O-ring or sealing ring (not shown).
  • the plug 1 is in a built-in state, ie when it is attached to a housing of the coil or the electromagnet (not shown), arranged at the level of the plug base 10 or at the level of the O-ring groove 28 on the housing.
  • the housing with the connector 1 waterproof or moisture-proof sealed.
  • the two current paths 12 pass through the plug 1 or its plug base 10 in FIG FIG. 2 from right to left. With a in FIG. 2 not shown left end portion of the current paths 12 dip this in a winding body 30 a.
  • This winding body 30 has a winding groove 32 which opens radially outwards and into which a coil winding 34 is accommodated.
  • This coil winding 34 is connected to the end portions of the current paths 12, which are pressed into the plastic of the winding body 30, or contacted by these. Via the current paths 12, a power supply of the coil winding 37 is thus produced.
  • a pole plate 36 is arranged, which serves as a magnetic return plate for closing the magnetic circuit.
  • FIG. 2 right above is the Verrastungs phenomenon 20, via which a plug of the power source (not shown) with the plug 1 and the connector device 6 is detachably connected, arranged.
  • the plug of the power source must be approximately coaxially inserted into a framed by the plug collar 8 connector receptacle 44. This takes place until one end of the plug, not shown, comes into abutment with the spacers 14 of the plug 1.
  • the spacers 14 of the plug 1 are elastically deformable in the axial direction, so that the plug, not shown, can continue to penetrate further or deeper into the plug receptacle 44 by the application of a certain force.
  • the latching takes place when the Verrastungsnase engages behind a Verrastungskante 38 Verrastungsaus Principleung 40 of Verrastungslvess 20.
  • the plug not shown, with a certain bias in the connector receptacle 44 can be fixed.
  • the plug base 10 of the plug 1 is in FIG. 2 extended to the right by a base rib 42. This has the task to clamp the penetrating current paths 12.
  • a movement of the current paths 12 is prevented to a certain extent.
  • the plug-in collar 8 encompassed plug base 10 is filled with a silicone-containing adhesive 26.
  • a silicone-containing adhesive 26 This is a single-component acetoxy silicone adhesive LOCTITE ® 5091 TM (Technical Data Sheet December 2007).
  • the one-component mold proves to be advantageous during the filling of the plug base 10, since no mixing with a second Component or with a catalyst is required.
  • a curing of the adhesive 26 takes place during the manufacturing process or after filling by UV light. Already under normal processing conditions, the adhesive 26 is exposed to sufficient UV radiation to completely cure at least on the surface.
  • the adhesive 26 has a further positive and advantageous property, since it cures by surface or atmospheric moisture even in shadow areas into which no UV radiation can get. A complete cure of the adhesive is achieved after about 72 hours at ambient temperature.
  • the adhesive used 26 is highly flexible, whereby the splice has a shock-absorbing property and a good load capacity. A transverse movement of the current paths 12 can be well compensated not only because of the adhesion of the adhesive 26, but also due to the elasticity of the adhesive 26. At the interfaces between the current paths 12 and the adhesive 26 so a gap formation is effectively prevented.
  • FIGS. 3 and 4 schematically a preferably designed as dosing tip dosing device 50 for the metered and precisely placed introduction of the liquid adhesive 26 in the passage region of the current paths 12 in the region of the plug base 10 is shown.
  • the metering device 50 is thereby introduced with respect to their position in the region of the connector receptacle 44, that due to the amount and the flow properties of the adhesive 26 is a uniform filling of the gap in the passage region of the current paths 12 and to the outside a homogeneous smooth surface of the adhesive 26th formed.
  • FIG. 2 schematically illustrates a curing device 51, preferably designed as a UV light source, for curing the liquid adhesive 26.
  • a curing device 51 preferably designed as a UV light source, for curing the liquid adhesive 26.
  • the adhesive used 26 has advantageous and positive properties. This is shown by stress tests, which have the task of investigating the tightness of the passage of the current paths 12 through the plug base 10.
  • the heated by a two-hour storage in a climatic chamber at 140 ° C plug 1 are suddenly immersed in 20 ° cold water. There they remained at one meter depth for a period of one hour.
  • In a subsequent storage of the specimens in a climatic chamber and at 20 ° was examined to what extent water has gotten from the plug receptacle 44 to the other side of the plug 1 in the region of the winding body 30. Even after 20 cycles, no leaks occurred.
  • An insulation resistance of the sealing adhesive 26 was greater than 1 M ⁇ in each case.
  • a leakage current was less than 10 ⁇ A at an applied voltage of 500 volts.
  • the plug 1 for a coil of an electromagnet of a pilot valve of the mobile hydraulics plug 1 according to the invention can be used with advantage anywhere where a watertight implementation of electrical current paths or pins is required.
  • the plug according to the invention proves to be particularly advantageous when used on pilot valves for mobile control blocks.
  • the plug according to the invention has significantly better properties of the seal with temperature change and mechanical stress.
  • a plug for the electrical supply of an aggregate of the hydraulic which can be arranged or arranged on a housing of such an aggregate.
  • a plug base of the plug is penetrated by a current path and sealed in a region of this passage with a silicone-containing compound against moisture penetration.
  • this composition is an adhesive with high adhesion forces.
  • a method for sealing a plug-in base of a plug which is penetrated by a current path and via which an aggregate of the hydraulics can be supplied electrically.
  • the method has a step "sealing a passage of the current path through the plug base with a silicone-containing adhesive" on.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Magnetically Actuated Valves (AREA)
  • Electromagnets (AREA)
EP13152448.0A 2012-01-25 2013-01-24 Abgedichteter Stecker Verfahren zur Abdichtung eines Steckers Not-in-force EP2621026B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13152448T PL2621026T3 (pl) 2012-01-25 2013-01-24 Uszczelniona wtyczka, sposób uszczelniania wtyczki

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012100598A DE102012100598A1 (de) 2012-01-25 2012-01-25 Abgedichteter Stecker und Verfahren zur Abdichtung eines Steckers

Publications (2)

Publication Number Publication Date
EP2621026A1 EP2621026A1 (de) 2013-07-31
EP2621026B1 true EP2621026B1 (de) 2017-07-19

Family

ID=47603435

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13152448.0A Not-in-force EP2621026B1 (de) 2012-01-25 2013-01-24 Abgedichteter Stecker Verfahren zur Abdichtung eines Steckers

Country Status (7)

Country Link
US (1) US9437955B2 (pl)
EP (1) EP2621026B1 (pl)
CN (1) CN103227381B (pl)
DE (1) DE102012100598A1 (pl)
ES (1) ES2644222T3 (pl)
HU (1) HUE035014T2 (pl)
PL (1) PL2621026T3 (pl)

Families Citing this family (8)

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CN103904475A (zh) * 2014-03-12 2014-07-02 中航光电科技股份有限公司 一种水下电磁分离装置
EP3172744B1 (en) 2014-07-24 2019-11-06 Connec Limited Electrical connection component for a machine cable
RU2659354C1 (ru) * 2014-07-24 2018-07-03 Коннек Лимитед Электрический соединитель
WO2016031740A1 (ja) * 2014-08-26 2016-03-03 京セラ株式会社 サーマルヘッドおよびサーマルプリンタ
DE102015004486B3 (de) * 2015-04-07 2016-06-30 Rosenberger Hochfrequenztechnik Gmbh & Co. Kg Verfahren zum Herstellen eines Steckverbinders und Steckverbinder
US10168371B2 (en) * 2017-04-04 2019-01-01 Pa&E, Hermetic Solutions Group, Llc System and methods for determining the impact of moisture on dielectric sealing material of downhole electrical feedthrough packages
US11081684B2 (en) 2017-05-24 2021-08-03 Honda Motor Co., Ltd. Production of carbon nanotube modified battery electrode powders via single step dispersion
CN112421302B (zh) * 2020-11-16 2022-07-01 合肥吉顺新能源科技有限公司 一种防脱落式新能源汽车用充电枪

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US5203723A (en) * 1992-02-27 1993-04-20 Halliburton Logging Services Inc. Low cost plastic hermetic electrical connectors for high pressure application
EP0961360A1 (en) * 1998-05-27 1999-12-01 Sumitomo Wiring Systems, Ltd. Sealed electrical connector
EP1265319A1 (en) * 2001-06-04 2002-12-11 Sumitomo Wiring Systems, Ltd. A terminal fitting
JP2009016064A (ja) * 2007-07-02 2009-01-22 Alpha- Design Kk 通電部の腐食とコネクタの脱落を防止する基板とコネクタの端子及びその搭載方法

Also Published As

Publication number Publication date
EP2621026A1 (de) 2013-07-31
HUE035014T2 (en) 2018-03-28
PL2621026T3 (pl) 2017-12-29
ES2644222T3 (es) 2017-11-28
CN103227381A (zh) 2013-07-31
CN103227381B (zh) 2018-07-03
US9437955B2 (en) 2016-09-06
DE102012100598A1 (de) 2013-07-25
US20130189865A1 (en) 2013-07-25

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