EP0989567B1 - Resin encapsulated device - Google Patents
Resin encapsulated device Download PDFInfo
- Publication number
- EP0989567B1 EP0989567B1 EP99116313A EP99116313A EP0989567B1 EP 0989567 B1 EP0989567 B1 EP 0989567B1 EP 99116313 A EP99116313 A EP 99116313A EP 99116313 A EP99116313 A EP 99116313A EP 0989567 B1 EP0989567 B1 EP 0989567B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact elements
- compound
- casing
- cavity
- coil
- 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
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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
Definitions
- the invention relates to a potted encapsulated device, especially a potted, explosion-proof electromagnet with a preferably in a housing in a Potting compound embedded coil and with an iron circle, the one also embedded in the sealing compound, contact elements arranged inside the housing with external ones Lines are connectable.
- Encapsulated devices have long been known and go for example from DE-G 90 03 343.4 and CH-A-627 584 discloses a potted encapsulated device describes according to the preamble of claim 1.
- the sealing compound As for encapsulated, explosion-proof electromagnets it is required that the sealing compound the electrical insulation guaranteed so that no explosive gas mixture can lead to ignition sources, and that the sealing compound also withstands mechanical loads and chemical influences away from the equipment, it is necessary also the contact elements for connecting external lines in to embed the sealing compound. Furthermore must be provided be that the contact elements inside the housing in a cavity separated from the environment is arranged, so that this also ensures that no explosive Gas mixture can get to the contact elements.
- the object of the invention is therefore a potted To further develop a device of the generic type that with simple manufacture and simple construction easy approach and contact of the external lines to the contact elements is possible.
- the contact elements protrude beyond the housing sealing compound on the face and the arrangement of a connected to the cavity and by the contact elements and the cover element leading cable duct in the Potting compound have the particularly great advantage that with a compact construction of the device, easy to bring up of the external lines to the contact elements and a optimal use of tools such as screwdrivers or the like is possible.
- the cavity in which the contact elements must be arranged to be non-explosive a the front of the housing in the area of the contact elements final, preferably curved cover element is formed will that after contacting the contact elements the housing is attachable.
- the protruding contact elements in connection with this cover element allow a easy installation of external lines and an explosion-proof Arrangement of the contact elements in the by the Lid element formed cavity.
- the lid element in addition to a domed, also a cup-shaped or other shape forming a cavity can. Another advantage is that due to the level Contact surface of the lid uses a flat sealing element can be.
- the contact elements there are also circuits in many cases or electrical components together with the contact elements, the coil and the iron circle in the potting compound have to be embedded, for example fuses, and there is an encapsulation of these electrical components with a thermoplastic compound under high pressure and therefore not damage to the components can be excluded is at a very advantageous Embodiment provided that the contact elements and further electrical components in a cup-shaped, in which Housing attachable component arranged and with a thermosetting Molding compound are cast. In this way especially the very sensitive fuses not damaged.
- thermosetting molding compound The coil, the iron circle and this cup-shaped, with the thermosetting molding compound is cast with a component encapsulated thermoplastic molding compound.
- An encapsulated device in the form of an electromagnet shown in Fig. 1 to 3, comprises a plastic or metal existing housing 10 in which an in Fig. 3 shown iron circle 60 and a coil 70 arranged which are connected via contact elements 20 to (not shown) electrical lines are connectable.
- the contact elements are 20 in a potting compound arranged in the housing 10 12 embedded and stand on the front over that Housing 10 flush sealing compound 12 over. On this way can be brought up to the contact elements 20 external lines easily with the contact elements 20 connected in an electrically conductive manner by screw-clamp connections 22 become.
- a cable channel 11 is provided in the potting compound 12, essentially of the contact elements 20 runs away to the upper case front.
- Cable duct 11 becomes a very compact construction of the electromagnet reached because the cable is essentially parallel to Direction of action of the electromagnet led away upwards can be.
- a housing cover 40 can be attached, the explosion-proof Forms cavity in which the contact elements 20 are arranged.
- the coil 70, the iron circle 60, the contact elements 20 and if necessary, further components are in a sealing compound embedded.
- a thermoplastic is preferred Molding compound for the encapsulation of the iron circle 60 and the coil 70 used under high pressure.
- the contact elements 20 and these components first in a pot-shaped, arranged in the housing 10 attachable component 30 and cast with a thermosetting molding compound 31. To this This ensures that these components by the Embedding in the molding compound should not be destroyed.
- the cup-shaped component 30 is then connected to the iron circle 60 and the coil 70 (see FIG. 3) and only then with molded around the thermoplastic molding compound.
Description
Die Erfindung betrifft eine vergußgekapselte Vorrichtung, insbesondere einen vergossenen, explosionsgeschützten Elektromagneten mit einer vorzugsweise in einem Gehäuse in einer Vergußmasse eingebetteten Spule und mit einem Eisenkreis, die über ebenfalls in die Vergußmasse eingebettete, im Inneren des Gehäuses angeordnete Kontaktelemente mit externen Leitungen verbindbar sind.The invention relates to a potted encapsulated device, especially a potted, explosion-proof electromagnet with a preferably in a housing in a Potting compound embedded coil and with an iron circle, the one also embedded in the sealing compound, contact elements arranged inside the housing with external ones Lines are connectable.
Vergußgekapselte Vorrichtungen sind seit längerem bekannt und gehen beispielsweise aus der DE-G 90 03 343.4 und der CH-A-627 584 hervor die eine vergussgekapselte Vorrichtung gemäss dem Oberbegriff des Anspruchs 1 beschreibt.Encapsulated devices have long been known and go for example from DE-G 90 03 343.4 and CH-A-627 584 discloses a potted encapsulated device describes according to the preamble of claim 1.
Da für vergußgekapselte, explosionsgeschützte Elektromagnete gefordert wird, daß die Vergußmasse die elektrische Isolation gewährleistet, so daß kein explosionsfähiges Gasgemisch zu Zündquellen gelangen kann, und daß die Vergußmasse ferner mechanische Belastungen aushält und chemische Einflüsse vom Betriebsmittel fernhält, ist es erforderlich, auch die Kontaktelemente zum Anschluß externer Leitungen in die Vergußmasse einzubetten. Des weiteren muß vorgesehen sein, daß die Kontaktelemente im Inneren des Gehäuses in einem von der Umgebung getrennten Hohlraum angeordnet sind, so daß auch hierdurch gewährleistet ist, daß kein explosionsfähiges Gasgemisch an die Kontaktelemente gelangen kann.As for encapsulated, explosion-proof electromagnets it is required that the sealing compound the electrical insulation guaranteed so that no explosive gas mixture can lead to ignition sources, and that the sealing compound also withstands mechanical loads and chemical influences away from the equipment, it is necessary also the contact elements for connecting external lines in to embed the sealing compound. Furthermore must be provided be that the contact elements inside the housing in a cavity separated from the environment is arranged, so that this also ensures that no explosive Gas mixture can get to the contact elements.
Bei bekannten, beispielsweise aus der Firmendruckschrift 7501453.05.04.96 der Anmelderin hervorgehenden Vorrichtungen sind die Kontaktelemente in einem von außen zugänglichen Hohlraum des Gehäuses angeordnet, der beispielsweise durch eine Platte geöffnet werden kann.In known, for example from the company publication Devices emerging from the applicant's 7501453.05.04.96 are the contact elements in an externally accessible Cavity of the housing arranged, for example can be opened by a plate.
Bei einer solchen Anordnung der Kontaktelemente ist die Heranführung und Befestigung der externen Leitungen an die/den Kontaktelementen problematisch und zeitaufwendig, da insbesondere Werkzeuge, beispielsweise Schraubendreher oder dergleichen nur mit großen Schwierigkeiten in dem Hohlraum des Gehäuses zum Einsatz kommen können.With such an arrangement of the contact elements Introduction and fastening of the external lines the contact element (s) is problematic and time-consuming, because in particular tools such as screwdrivers or the like only with great difficulty in the Cavity of the housing can be used.
Aufgabe der Erfindung ist es daher, eine vergußgekapselte Vorrichtung der gattungsgemäßen Art derart weiterzubilden, daß bei einfacher Herstellung und einfachem Aufbau ein leichtes Heranführen und Kontaktieren der externen Leitungen an die Kontaktelemente möglich ist.The object of the invention is therefore a potted To further develop a device of the generic type that with simple manufacture and simple construction easy approach and contact of the external lines to the contact elements is possible.
Diese Aufgabe wird bei einer vergußgekapselten Vorrichtung der eingangs beschriebenen Art erfindungsgemäß dadurch gelöst, daß die Kontaktelemente über die das Gehäuse stirnseitig abschließende Vergußmasse überstehend in einem Hohlraum angeordnet sind, der durch ein an dem Gehäuse im Bereich der Kontaktelemente befestigbares Deckelelement gebildet wird und daß in der Vergußmasse ein mit dem Hohlraum verbundener und.von den Kontaktelementen und dem Deckelelement wegführender Kabelkanal vorgesehen ist.This task is accomplished with a potted encapsulated device of the type described in the introduction solved according to the invention by that the contact elements on the front of the housing final casting compound protruding in a cavity are arranged by a on the housing in the area of the contact elements attachable cover element is formed and that in the potting compound one with the cavity connected and. of the contact elements and the cover element leading cable duct is provided.
Das Überstehen der Kontaktelemente über die das Gehäuse stirnseitig abschließende Vergußmasse und die Anordnung eines mit dem Hohlraum verbundenen und von den Kontaktelementen und dem Deckelelement wegführenden Kabelkanals in der Vergußmasse weisen den besonders großen Vorteil auf, daß bei kompaktem Aufbau der Vorrichtung ein leichtes Heranführen der externen Leitungen an die Kontaktelemente und ein optimaler Einsatz von Werkzeugen wie Schraubendreher oder dergleichen möglich ist.The contact elements protrude beyond the housing sealing compound on the face and the arrangement of a connected to the cavity and by the contact elements and the cover element leading cable duct in the Potting compound have the particularly great advantage that with a compact construction of the device, easy to bring up of the external lines to the contact elements and a optimal use of tools such as screwdrivers or the like is possible.
Vorteilhaft ist auch, daß der Hohlraum, in dem die Kontaktelemente angeordnet sein müssen, um nicht explosionsfähigen Gasgemischen oder dergleichen ausgesetzt zu sein, durch ein das Gehäuse im Bereich der Kontaktelemente stirnseitig abschließendes, vorzugsweise gewölbtes Deckelelement gebildet wird, das nach dem Kontaktieren der Kontaktelemente an dem Gehäuse befestigbar ist. Die überstehenden Kontaktelemente in Verbindung mit diesem Deckelelement erlauben eine einfache Montage der externen Leitungen und eine explosionssichere Anordnung der Kontaktelemente in dem durch das Deckelelement gebildeten Hohlraum. Es versteht sich, daß das Deckelelement außer einer gewölbten, auch eine topfförmige oder andere, einen Hohlraum bildende Gestalt aufweisen kann. Ein weiterer Vorteil ist, daß aufgrund der ebenen Auflagefläche des Deckels ein planes Dichtelement verwendet werden kann.It is also advantageous that the cavity in which the contact elements must be arranged to be non-explosive To be exposed to gas mixtures or the like a the front of the housing in the area of the contact elements final, preferably curved cover element is formed will that after contacting the contact elements the housing is attachable. The protruding contact elements in connection with this cover element allow a easy installation of external lines and an explosion-proof Arrangement of the contact elements in the by the Lid element formed cavity. It is understood that the lid element in addition to a domed, also a cup-shaped or other shape forming a cavity can. Another advantage is that due to the level Contact surface of the lid uses a flat sealing element can be.
Da neben den Kontaktelementen in vielen Fällen auch Schaltungen oder elektrische Bauteile zusammen mit den Kontaktelementen, der Spule und dem Eisenkreis in die Vergußmasse eingebettet werden müssen, beispielsweise auch Schmelzsicherungen, und da ein Umspritzen dieser elektrischen Bauelemente mit einer Thermoplastmasse unter hohem Druck erfolgt und insofern eine Beschädigung der Bauteile nicht ausgeschlossen werden kann, ist bei einer sehr vorteilhaften Ausführungsform vorgesehen, daß die Kontaktelemente und weitere elektrische Bauteile in einem topfförmigen, in dem Gehäuse befestigbaren Bauteil angeordnet und mit einer duroplastischen Formmasse vergossen sind. Auf diese Weise werden insbesondere die sehr empfindlichen Schmelzsicherungen nicht beschädigt.In addition to the contact elements, there are also circuits in many cases or electrical components together with the contact elements, the coil and the iron circle in the potting compound have to be embedded, for example fuses, and there is an encapsulation of these electrical components with a thermoplastic compound under high pressure and therefore not damage to the components can be excluded is at a very advantageous Embodiment provided that the contact elements and further electrical components in a cup-shaped, in which Housing attachable component arranged and with a thermosetting Molding compound are cast. In this way especially the very sensitive fuses not damaged.
Die Spule, der Eisenkreis und dieses topfförmige, mit der duroplastischen Formmasse vergossene Bauteil sind mit einer thermoplastischen Formmasse umspritzt.The coil, the iron circle and this cup-shaped, with the thermosetting molding compound is cast with a component encapsulated thermoplastic molding compound.
Weitere Vorteile und Merkmale der Erfindung sind Gegenstand der nachfolgenden Beschreibung sowie der zeichnerischen Darstellung eines Ausführungsbeispiels.Further advantages and features of the invention are the subject the following description and the graphic Representation of an embodiment.
In der Zeichnung zeigen:
- Fig. 1
- eine perspektivische Darstellung eines erfindungsgemäßen explosionsgeschützten Elektromagneten für Ventile;
- Fig. 2
- eine perspektivische Darstellung des in Fig. 1 dargestellten Elektromagneten mit abgenommenem Deckel und
- Fig. 3
- eine Schnittansicht des in Fig. 1 und 2 dargestellten Elektromagneten.
- Fig. 1
- a perspective view of an explosion-proof electromagnet for valves;
- Fig. 2
- a perspective view of the electromagnet shown in Fig. 1 with the cover removed and
- Fig. 3
- a sectional view of the electromagnet shown in Figs. 1 and 2.
Eine vergußgekapselte Vorrichtung in Form eines Elektromagneten,
dargestellt in Fig. 1 bis 3, umfaßt ein aus Kunststoff
oder Metall bestehendes Gehäuse 10, in dem ein in
Fig. 3 dargestellter Eisenkreis 60 und eine Spule 70 angeordnet
sind, die über Kontaktelemente 20 mit (nicht dargestellten)
elektrischen Leitungen verbindbar sind.An encapsulated device in the form of an electromagnet,
shown in Fig. 1 to 3, comprises a plastic
or
Wie insbesondere aus Fig. 1 und 3 hervorgeht, sind die Kontaktelemente
20 in eine in dem Gehäuse 10 angeordnete Vergußmasse
12 eingebettet und stehen stirnseitig über die das
Gehäuse 10 bündig abschließende Vergußmasse 12 über. Auf
diese Weise können an die Kontaktelemente 20 heranzuführende
externe Leitungen leicht mit den Kontaktelementen 20
durch Schraub-Klemm-Verbindungen 22 elektrisch leitend verbunden
werden.As can be seen in particular from FIGS. 1 and 3, the contact elements are
20 in a potting compound arranged in the
Um die externen Leitungen leicht an die Schraub-Klemm-Verbindung
22 und damit die Kontaktelemente 20 heranführen
zu können, ist in der Vergußmasse 12 ein Kabelkanal 11 vorgesehen,
der im wesentlichen von den Kontaktelementen 20
weg zur oberen Gehäusestirnseite hin verläuft. Durch diesen
Kabelkanal 11 wird ein sehr kompakter Aufbau des Elektromagneten
erreicht, da das Kabel im wesentlichen parallel zur
Wirkrichtung des Elektromagneten nach oben hin weggeführt
werden kann.To connect the external cables easily to the screw-
An der Gehäusestirnseite ist durch Schrauben 41, die in ein
an dem Gehäuse 10 befestigtes Gewinde 14 einschraubbar
sind, ein Gehäusedeckel 40 befestigbar, der einen explosionsgeschützten
Hohlraum bildet, in dem die Kontaktelemente
20 angeordnet sind.On the front of the housing is by
Die Spule 70, der Eisenkreis 60, die Kontaktelemente 20 und
gegebenenfalls weitere Bauteile sind in eine Vergußmasse
eingebettet. Dabei wird vorzugsweise eine thermoplastische
Formmasse zur Umspritzung des Eisenkreises 60 und der Spule
70 unter hohem Druck verwendet. Wenn neben den Kontaktelementen
20, dem Eisenkreis 60 und der Spule 70 in dem Gehäuse
10 weitere elektrische Bauteile, wie zum Beispiel Sicherungen
angeordnet sind, die in vielen Fällen druckempfindlich
und daher für eine Umspritzung mit der thermoplastischen
Formmasse nicht geeignet sind, werden die Kontaktelemente
20 und diese Bauteile zunächst in einem topfförmigen,
in dem Gehäuse 10 befestigbaren Bauteil 30 angeordnet und
mit einer duroplastischen Formmasse 31 vergossen. Auf diese
Weise wird sichergestellt, daß diese Bauteile durch das
Einbetten in die Formmasse nicht zerstört werden. Dieses
topfförmige Bauteil 30 wird sodann mit dem Eisenkreis 60
und der Spule 70 verbunden (siehe Fig. 3) und erst dann mit
der thermoplastischen Formmasse umspritzt.The
Claims (3)
- An encapsulated device, in particular a sealed, explosion-proof electromagnet, comprising a coil (70), preferably embedded in a sealing compound (12) in a casing (10), and a ferromagnetic circuit (60), the coil (70) and the ferromagnetic circuit (60) being connectable to external lines by contact elements (20) likewise embedded in the sealing compound (12) and arranged inside the casing, characterised in that the contact elements (20) are arranged in a cavity so as to project beyond the sealing compound (12) closing the end of the casing, the cavity being formed by a preferably convex cover member fixable to the casing in the region of the contact elements (20), and in that a cable duct, connected to the cavity and leading away from the contact elements (20) and the cover member, is provided in the sealing compound.
- An encapsulated device according to claim 1, characterised in that the contact elements (20) and further electrical components are arranged in a pot-shaped part (30) fixable in the casing (10) and sealed with a thermosetting moulding compound.
- An encapsulated device according to claim 2, characterised in that a thermoplastic moulding compound is injected around the coil (70), the ferromagnetic circuit (60) and the pot-shaped part (30) sealed with a thermosetting moulding compound.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843673A DE19843673C2 (en) | 1998-09-23 | 1998-09-23 | Encapsulated device |
| DE19843673 | 1998-09-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0989567A1 EP0989567A1 (en) | 2000-03-29 |
| EP0989567B1 true EP0989567B1 (en) | 2002-06-26 |
Family
ID=7882001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99116313A Expired - Lifetime EP0989567B1 (en) | 1998-09-23 | 1999-08-19 | Resin encapsulated device |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US6246309B1 (en) |
| EP (1) | EP0989567B1 (en) |
| DE (2) | DE19843673C2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10125223B4 (en) * | 2001-05-23 | 2004-07-22 | Kern Gmbh | Electromagnetic device |
| US7007924B2 (en) * | 2003-06-27 | 2006-03-07 | Parker-Hannifin Corporation | One-piece coil conduit |
| DE102004009690A1 (en) * | 2004-02-27 | 2005-09-08 | Nass Magnet Gmbh | solenoid |
| US8271141B2 (en) * | 2008-06-09 | 2012-09-18 | Ross Operating Valve Company | Control valve system with cycle monitoring, diagnostics and degradation prediction |
| CA159231S (en) | 2014-04-25 | 2015-10-12 | Colgate Palmolive Co | Charger for electric toothbrush |
| CA159230S (en) | 2014-04-25 | 2015-10-12 | Colgate Palmolive Co | Charger for electric toothbrush |
| US10840003B2 (en) * | 2015-09-14 | 2020-11-17 | Appleton Grp Llc | Arrangement for maintaining desired temperature conditions in an encapsulated transformer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH627584A5 (en) * | 1978-07-07 | 1982-01-15 | Lucifer Sa | Electrical coil |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1465514A1 (en) * | 1964-10-24 | 1969-12-11 | Eberle Werke Kg | Housing for explosion-proof electrical equipment |
| US3657677A (en) * | 1969-06-20 | 1972-04-18 | Westinghouse Electric Corp | Electrical transformer |
| DE2926549A1 (en) * | 1979-06-30 | 1981-01-15 | Schultz Wolfgang E | Explosion-proof housing for solenoid actuator - has space between circuit components filled with casting resin to eliminate air |
| US4412196A (en) * | 1982-04-08 | 1983-10-25 | Double A Products Company | Solenoid for directional valves |
| DE3501391C2 (en) * | 1985-01-17 | 1996-01-11 | Wabco Gmbh | Housing for an electrical component |
| DE3842379A1 (en) * | 1988-12-16 | 1990-06-21 | Heinrichs Messgeraete Josef | Electromagnetic arrangement in a measuring instrument of explosion-protected design |
| DE9003343U1 (en) * | 1990-03-21 | 1990-05-23 | Herion-Werke Kg, 7012 Fellbach, De | |
| JPH0538479U (en) * | 1991-10-25 | 1993-05-25 | 曙ブレーキ工業株式会社 | Brake control mechanism solenoid valve device |
| JP2851491B2 (en) * | 1992-08-13 | 1999-01-27 | 三菱電機株式会社 | Ignition device for internal combustion engine |
| JPH0766325A (en) * | 1993-08-26 | 1995-03-10 | Rohm Co Ltd | Structure of synthetic resin package type electronic component |
| EP0662696B1 (en) * | 1994-01-11 | 1998-03-18 | Smc Corporation | Method for fabricating solenoid device for electromagnetic valves |
-
1998
- 1998-09-23 DE DE19843673A patent/DE19843673C2/en not_active Expired - Fee Related
-
1999
- 1999-08-19 EP EP99116313A patent/EP0989567B1/en not_active Expired - Lifetime
- 1999-08-19 DE DE59901840T patent/DE59901840D1/en not_active Expired - Lifetime
- 1999-09-23 US US09/404,068 patent/US6246309B1/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH627584A5 (en) * | 1978-07-07 | 1982-01-15 | Lucifer Sa | Electrical coil |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0989567A1 (en) | 2000-03-29 |
| DE19843673A1 (en) | 2000-04-13 |
| US6246309B1 (en) | 2001-06-12 |
| DE19843673C2 (en) | 2001-05-17 |
| DE59901840D1 (en) | 2002-08-01 |
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