EP1356480A1 - Sealed-off switchgear - Google Patents
Sealed-off switchgearInfo
- Publication number
- EP1356480A1 EP1356480A1 EP02702302A EP02702302A EP1356480A1 EP 1356480 A1 EP1356480 A1 EP 1356480A1 EP 02702302 A EP02702302 A EP 02702302A EP 02702302 A EP02702302 A EP 02702302A EP 1356480 A1 EP1356480 A1 EP 1356480A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sealing
- housing
- switching device
- sealing web
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/128—Encapsulating, encasing or sealing
Definitions
- the invention relates to a switching device, in particular for actuating valves, with a housing and a coil body arranged therein, in which a switching part is guided and which is provided with a winding of a conductor which is connected to contact parts of a connector, at least parts , of the housing and the connector are surrounded with a plastic compound and wherein sealing means seal the interior of the switching device from the environment.
- switching devices which are also referred to in technical terms as switching magnets, are known for example from DE 36 35 551 A1 and DE-GM 83 1 7 753 and on the. Market freely available.
- the switching part is essentially formed from a tubular bolt which, when the coil is electrically excited, travels a predeterminable distance via a device plug which can be connected to the plug plate of a connecting plug and thereby triggers a switching operation, for example in a valve for shutting off and guiding fluid flows.
- these known switching devices used in areas with high humidity, as they are, among other things, in the condensation and Ko .
- Another magnet coil arrangement is known from DE 198 54 100 AI, which consists of an encapsulated coil with an injection-molded plug-in base for the connection of electrical connecting lines and a metal housing enclosing the encapsulated coil.
- the contact lug assigned to the protective conductor connection is led through the plug-in base and connected to the metal housing .
- a recess is provided between the plug base and the outer surface of the encapsulated coil, into which the metal housing engages.
- a connecting element which electrically connects the contact lug to the metal housing, is guided through the recess within the plug-in base.
- a sealing element surrounding the connecting element is arranged in the recess of the plug-in base.
- Magnetic coil arrangements of this type are used to actuate electromagnetically actuated hydraulic valves in industrial hydraulics, in which metal parts which are accessible from the outside are to be connected to a protective conductor connection.
- the solution in question is, however, complex to implement and the parts mentioned must be able to work together in a precisely fitting manner, which significantly increases the manufacturing outlay and consequently the manufacturing costs. Since a rubber sealing ring is also used again, failure due to embrittlement or leakage of the sealing ring mentioned cannot be ruled out if the switching device is used for a long time. Based on this prior art, the invention has for its object to provide a small-sized switching device which is particularly suitable for use in vehicle technology and which still allows reliable operation even at high humidity over a longer period of use.
- At least one of the sealing means is formed from a sealing web, that the sealing web consists of a fusible material that when the plastic mass is applied, this. has a temperature that the respective sealing web melts in a fluid-tight manner with the plastic mass, that the sealing web is arranged on the underside of a plug plate of the Arisch plug and that the sealing web has at least the engaging parts of the connector which are connected to the housing in the molten state Connection condition with the plastic compound is fluid-tight from the environment, the use of the usual, subject to failure rubber sealing rings (O-rings) in the area of the connector can be completely dispensed with.
- O-rings failure rubber sealing rings
- the sealing web is arranged on the underside of a plug plate of the connector facing the housing, the sealing web sealing at least the engagement parts of the connector which are connected to the housing in the molten connection state with the plastic compound in a fluid-tight manner from the environment.
- the sealing ring is preferably in one piece. Part 1 of the plug plate. This provides a secure, simple sealing possibility without having to make precise adjustment steps for axially pressing the known rubber sealing rings on the underside of the plug plate, as described in the prior art according to DE 43 41 087 C2.
- Fig.2 is a bottom view of a connector part of the connector without inserted connector parts.
- the switching device has a coil body 10 made of plastic material.
- the end of the coil former 10 has two annular end flanges 12, between which the winding package 14 of a conductor 16 extends, which is shown only schematically in FIG.
- a switching part (not shown) is guided in the coil former 10 and is surrounded by a so-called pole tube (not shown).
- the arrangement in question is known, so that it is not dealt with in more detail at this point. However, when the switching device is actuated, the switching part can control conventional valves and thus determine their switching position.
- the bobbin 10 is surrounded by a substantially cylindrical housing 18 made of metallic material.
- the conductor 16 of the winding 14 is in an electrically conductive connection with contact parts 20 in the form of three connector lugs of a connector 22.
- the details of the relevant connection technology between the conductor 16, the winding 14 and the electrically conductive parts of the connector 22 can be seen in particular in FIG. 2 of DE 43 41 087 C2, so that no further details will be given here
- a plastic mass 24 is used, in particular in the form of a plastic casting compound. This can be injected in the gap between the parts mentioned at elevated temperature and cures there.
- a casting or injection molding mold (not shown in more detail) is used, in which the parts of the switching device can be inserted.
- the contact parts 20 in the form of the three plug tabs can be cut or punched out of a flat circuit board and are then encapsulated with the plastic material of the connector plug 22 in the form of the plug plate 26.
- the relevant plug plate 26 is shown according to the illustration according to FIG. 2 viewed from below, the connector lugs being omitted for the sake of simplicity and only the three recesses 28 in the plug plate 26 through which the contact parts 20 in the form of Plug flags are carried out.
- the plug plate 26 has an insert 30 essentially in the center, which is designed in the manner of a socket. By means of this plug insert 30, the plug plate 26 can be maintained while maintaining a distance on the outer Put on circumferential surface 32 of the housing 18.
- the plug insert 30 has an internal thread 34 and two cutting inserts 36 which are separated from one another in the axial direction and are each provided with longitudinal teeth.
- the relevant cutting inserts 36 guarantee a firm hold of the plug insert 30 both in the metal housing 18 and in the plug plate 26 with its plastic material.
- the internal thread 34 is part of a screw connection which the plug plate 26 receives with a device plug (not shown) for the purpose of power connection.
- the plug-in insert 30 is connected to the contact part 20 of the plug plate 26 serving as the ground connection 38 and in particular passes through the mentioned ground connection 38 in a conductive form.
- the plug insert 30 is preferably already introduced into the plug plate 26 and is then pressed together with the latter against the housing 18 at least until a secure hold of the lower part of the cutting insert 36 in the Housing .18 is guaranteed.
- the housing 18, the coil body 10 and the winding 14 are essentially rotationally symmetrical components and the plastic casting compound 24 is shown hatched in FIG. 1 and shows the poured-out spaces and column of the switching device.
- the plastic compound 24 should also essentially ensure that moisture, for example in the form of condensate or the like, cannot penetrate into the switching device, although it cannot be ruled out that due to the Capillary action nevertheless moisture enters the switching device, the capillary action occurring in particular between the connecting surface of the plastic compound 24 and the other parts of the switching device, such as the housing 18 or the parts of the plug plate 26.
- additional sealing means 40 are provided which seal the interior 42 of the switching device from the environment 44 (cf. FIG. 1).
- the respective sealant 40 is formed from a sealing web 48, wherein the sealing web 48 consists of a meltable material and, when the plastic compound 24 is applied, it has a temperature such that the respective sealing web 48 melts in a fluid-tight manner with the plastic compound 24.
- the sealing web 48 In order to be able to show the arrangement of the sealing web 48, this is shown in FIG. 1, although there the plastic mass 24 has already been introduced into the actual switching device. Accordingly, the sealing web 48 forms a closed sealing ring before it melts with the actual plastic compound 24.
- the sealing web 48 is arranged on the underside 50 of the plug plate 26 of the connector plug 22 facing the housing 18. This sealing web 48 closes at least the engaging parts of the connector 22 in the form of the socket-like connector insert 30, which are connected to the housing 18, in the molten connection state with the plastic compound 24 from the environment 44 in a fluid-tight manner.
- the sealing web 48 is an integral part of the connector plate 26 and protrudes on its other underside 50 by a predeterminable protrusion.
- the sealing web 48 forms a type of circumferential sealing edge, the sealing web 48 being self-contained and comprising the bore 52 between its sealing edges, which later receives the plug insert 30 when the switching device is assembled.
- the sealing web 48 delimits the relevant plug insert 30 from the two current-carrying connector tabs as contact parts 20, whereas the ground connection 38 within the sealing web 48 is located and passes through the associated recess 28. In this respect too, a delimitation from the ground connection 38 with the other two current-carrying contact parts 20 is achieved via the circumferential sealing edge in the form of the sealing web 48.
- the sealing web 48 in question is designed as a melting ring or melting web, which melts as soon as it comes into contact with the hot extrusion compound and forms an integral connection with the plastic compound 24.
- the sealing web 48 is thus preferably also made of a thermoplastic material similar to that of the plastic compound 24 and preferably consists of a polyamide material.
- the sealing web 48 can be rectangular in cross section; but it is also a triangular cross-sectional shape or other cross-sectional shapes (not shown) possible without this affecting the sealing effect. Furthermore, the sealing web 48 can be chosen to have a very small structure, for example a width of 0.2 to 0.3 mm, and a Height from 0.3 to 0.4 mm.
- the materials are to be chosen such that, for example, the plastic of the coil body 10 has a lower melting temperature than the plastic mass 24, so that melting on the sealing web 48 is guaranteed in any case by the encapsulation compound.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Magnetically Actuated Valves (AREA)
- Electromagnets (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Supplying Of Containers To The Packaging Station (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Glass Compositions (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10104998 | 2001-02-03 | ||
DE10104998A DE10104998A1 (en) | 2001-02-03 | 2001-02-03 | switching device |
PCT/EP2002/000677 WO2002063643A1 (en) | 2001-02-03 | 2002-01-24 | Sealed-off switchgear |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1356480A1 true EP1356480A1 (en) | 2003-10-29 |
EP1356480B1 EP1356480B1 (en) | 2008-02-27 |
Family
ID=7672808
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02702302A Expired - Lifetime EP1356480B1 (en) | 2001-02-03 | 2002-01-24 | Sealed-off switchgear |
Country Status (7)
Country | Link |
---|---|
US (1) | US7151427B2 (en) |
EP (1) | EP1356480B1 (en) |
JP (1) | JP2004518302A (en) |
AT (1) | ATE387717T1 (en) |
DE (2) | DE10104998A1 (en) |
ES (1) | ES2298345T3 (en) |
WO (1) | WO2002063643A1 (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10327209B3 (en) * | 2003-06-17 | 2004-09-02 | Hydac Electronic Gmbh | Switching arrangement, especially for actuating valves, has anti-stick device with axial connecting part enclosing actuating part with defined radial separation and engaging opening in pole core |
DE10356880B4 (en) * | 2003-12-03 | 2011-04-21 | Sontec Sensorbau Gmbh | Method for producing a liquid, gas and vapor-tight electrical and / or optical component |
EP1560004B1 (en) * | 2004-01-27 | 2009-12-09 | Mettler-Toledo AG | Coil with moisture protection layers |
DE102004028871A1 (en) | 2004-06-15 | 2006-01-05 | Hydac Electronic Gmbh | Actuating device, in particular for actuating valves |
DE102004029185A1 (en) * | 2004-06-16 | 2006-01-12 | Hydac Electronic Gmbh | actuator |
DE202007005132U1 (en) * | 2007-04-04 | 2008-08-14 | Eto Magnetic Gmbh | Electromagnetic actuator |
DE102008030454A1 (en) | 2008-06-26 | 2009-12-31 | Hydac Electronic Gmbh | actuator |
DE102008030452A1 (en) | 2008-06-26 | 2009-12-31 | Hydac Electronic Gmbh | actuator |
DE102008064604B4 (en) * | 2008-11-12 | 2018-09-20 | Svm Schultz Verwaltungs-Gmbh & Co. Kg | Electromagnetically actuated fluid valve |
JP5307517B2 (en) * | 2008-11-14 | 2013-10-02 | カヤバ工業株式会社 | solenoid |
US8081466B2 (en) * | 2009-07-06 | 2011-12-20 | Rockwell Automation Technologies, Inc. | Overmolded electronics enclosure |
DE102010014072A1 (en) | 2010-04-07 | 2011-10-13 | Hydac Fluidtechnik Gmbh | actuator |
DE102010055212A1 (en) * | 2010-12-20 | 2012-06-21 | Svm Schultz Verwaltungs-Gmbh & Co. Kg | Electromagnet with a connection area |
JP5263282B2 (en) * | 2010-12-20 | 2013-08-14 | 株式会社デンソー | Linear solenoid |
US8911652B2 (en) | 2011-09-06 | 2014-12-16 | Automatic Switch Company | System and method of sealing coil leads during encapsulation |
JP5597218B2 (en) * | 2012-02-29 | 2014-10-01 | 株式会社鷺宮製作所 | Mold coil, solenoid valve using mold coil, and method for manufacturing mold coil |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8317753U1 (en) * | 1984-11-29 | Robert Bosch Gmbh, 7000 Stuttgart | Adjusting device | |
FR1348792A (en) * | 1963-02-18 | 1964-01-10 | Zahnradfabrik Friedrichshafen | control solenoid with sealing device |
DE3635551A1 (en) * | 1986-10-20 | 1988-04-28 | Thomas Technik Ges Fuer Magnet | Pressure-tight electrical solenoid (solenoid actuator) |
DE4106761A1 (en) | 1991-03-04 | 1992-09-10 | Leybold Ag | METHOD FOR THE PRODUCTION OF VALVE INTERNAL PARTS FOR VACUUM VALVES WITH VALVE PAD AND BELLOWS, AND INTERNAL PARTS MANUFACTURED BY THIS METHOD |
DE4341087C2 (en) * | 1993-12-02 | 1996-02-08 | Bso Steuerungstechnik Gmbh | Sealed switching device |
JPH10270240A (en) | 1997-03-21 | 1998-10-09 | Honda Lock Mfg Co Ltd | Coil assembly |
DE19854100B4 (en) * | 1998-11-24 | 2013-10-10 | Bosch Rexroth Aktiengesellschaft | Solenoid assembly |
JP2000193007A (en) | 1998-12-22 | 2000-07-14 | Fukoku Co Ltd | Flat spring-integrated core and its manufacture |
US6175168B1 (en) * | 1999-04-19 | 2001-01-16 | Pontiac Coil, Inc. | Overmolded stator for fuel metering solenoid and method of manufacturing same |
JP2001241468A (en) * | 2000-02-29 | 2001-09-07 | Sanden Corp | Yoke for electromagnetic clutch |
US6737947B1 (en) * | 2000-12-13 | 2004-05-18 | Climco Coils Company | Assembly for sealing electrical leads to internal electrical device |
US6821162B2 (en) * | 2002-07-26 | 2004-11-23 | Fci Americas Technology, Inc. | Integrated flange seal electrical connection |
US6966800B2 (en) * | 2004-03-22 | 2005-11-22 | Fci Americas Technology, Inc. | Overmolded electrical connector |
-
2001
- 2001-02-03 DE DE10104998A patent/DE10104998A1/en not_active Withdrawn
-
2002
- 2002-01-24 EP EP02702302A patent/EP1356480B1/en not_active Expired - Lifetime
- 2002-01-24 DE DE50211783T patent/DE50211783D1/en not_active Expired - Lifetime
- 2002-01-24 US US10/470,973 patent/US7151427B2/en not_active Expired - Fee Related
- 2002-01-24 ES ES02702302T patent/ES2298345T3/en not_active Expired - Lifetime
- 2002-01-24 AT AT02702302T patent/ATE387717T1/en not_active IP Right Cessation
- 2002-01-24 JP JP2002563496A patent/JP2004518302A/en active Pending
- 2002-01-24 WO PCT/EP2002/000677 patent/WO2002063643A1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO02063643A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE50211783D1 (en) | 2008-04-10 |
DE10104998A1 (en) | 2002-08-22 |
EP1356480B1 (en) | 2008-02-27 |
ES2298345T3 (en) | 2008-05-16 |
US7151427B2 (en) | 2006-12-19 |
WO2002063643A1 (en) | 2002-08-15 |
US20040089833A1 (en) | 2004-05-13 |
JP2004518302A (en) | 2004-06-17 |
ATE387717T1 (en) | 2008-03-15 |
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