EP1569248A2 - Magnetic coil - Google Patents

Magnetic coil Download PDF

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Publication number
EP1569248A2
EP1569248A2 EP04027139A EP04027139A EP1569248A2 EP 1569248 A2 EP1569248 A2 EP 1569248A2 EP 04027139 A EP04027139 A EP 04027139A EP 04027139 A EP04027139 A EP 04027139A EP 1569248 A2 EP1569248 A2 EP 1569248A2
Authority
EP
European Patent Office
Prior art keywords
ribs
magnetic coil
sheath
coil according
height
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Withdrawn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
EP04027139A
Other languages
German (de)
French (fr)
Other versions
EP1569248A3 (en
Inventor
Arndt Heinemann
Werner Leuschner
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.)
Nass Magnet GmbH
Original Assignee
Nass Magnet 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 Nass Magnet GmbH filed Critical Nass Magnet GmbH
Publication of EP1569248A2 publication Critical patent/EP1569248A2/en
Publication of EP1569248A3 publication Critical patent/EP1569248A3/en
Withdrawn legal-status Critical Current

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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
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/128—Encapsulating, encasing or sealing
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/02—Casings
    • H01F27/022—Encapsulation

Definitions

  • the invention relates to a magnetic coil with an outer sheath Plastic.
  • Solenoid coils for potentially explosive atmospheres must be subjected to a shock test in accordance with meet the standards EN 50 014 and EN 50 028. This exam will be a vertical impact with a hemispherical test specimen on the impact hazard Areas executed.
  • the invention is therefore based on the object, the magnetic coil with an outer Plastic sheath to improve that to ensure a sufficient impact resistance material and costs can be saved.
  • the coil according to the invention is characterized in that the outer Plastic sheath on the outside a variety of ribs as Protection against shocks has.
  • the ribs can by deformation the energy like Take a crumple zone, so that the sheath itself stronger before Shock energy is protected.
  • the arrangement and configuration of the ribs is carried out so that in the Standards defined specimens the ribs, but not the actual Sheathing surface, can meet.
  • sheath and ribs are made Plastic injection molding material produced.
  • the ribs are expediently arranged parallel to each other and form webs whose width is smaller than their height is.
  • a magnetic coil 1 and an electrical connection housing 2 is shown, which are firmly connected.
  • the coil 1 shown in more detail in Fig. 2 consists essentially of a yoke 10, a bobbin 11 and a coil winding 12. Furthermore, the components an anchor system 3, which in detail a magnetic core 30, a Anchor 31, an anchor guide 32 and a fastening nut 33 includes.
  • the magnetic coil further comprises an outer casing 4 made of plastic, the is usually produced by injection molding.
  • On the outside of the Sheath 4 is further a plurality of ribs 40 as protection against shocks intended.
  • the ribs are formed in the illustrated embodiment by webs whose Width b is smaller than the height h.
  • the ratio of the distance a to the height h of the Ribs are preferably in the range of 1 to 2.
  • the ribs 40 are usefully made of the same material as the Sheath 4, wherein the sheath and the ribs at the same time Injection molding can be produced.
  • the ribs 40 are only on the Side surfaces of the magnetic coil 1 is provided, since the shock by definition only from can come up and from the side.
  • the upper area where the here Fixing nut 33 is provided, is dimensioned so that the strigoviper no Damage to the sheath 4 can cause. Accordingly, here are no ribs provided. In the context of the invention, however, this can also Have area ribs, if necessary or useful.
  • connection housing 2 produced separately from the coil 1 is connected to the coil 1, for example, firmly connected by gluing, screwing or potting.
  • the Terminal housing 2 also has ribs 20 on its outer peripheral surface on, which correspond to the ribs 40 of the magnetic coil 1 in their embodiment.
  • the ribs 40 and 20 protect by the solenoid coil 1 and terminal housing. 2 formed component sufficiently from shocks, with respect to conventional designs saves material and costs for the sheathing can be.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

The magnet coil (1) has an outer casing (4) of plastic with a number of ribs (40) on its exterior as protection against impacts. The ribs are arranged parallel to each other and are formed by webs whose width (b) is greater than their height. The ratio of the separation distance (a) to the height of the ribs is within the range 1 to 2.

Description

Die Erfindung betrifft eine Magnetspule mit einer äußeren Ummantelung aus Kunststoff.The invention relates to a magnetic coil with an outer sheath Plastic.

Magnetspulen für explosionsgefährdete Bereiche müssen einer Stoßprüfung gemäß den Normen EN 50 014 und EN 50 028 genügen. Bei dieser Prüfung wird ein senkrechter Schlag mit einem halbkugelförmigen Prüfkörper auf die stoßgefährdeten Bereiche ausgeführt.Solenoid coils for potentially explosive atmospheres must be subjected to a shock test in accordance with meet the standards EN 50 014 and EN 50 028. This exam will be a vertical impact with a hemispherical test specimen on the impact hazard Areas executed.

Um dieser Vorschrift, insbesondere bei tiefen Temperaturen (beispielsweise -50° C), zu genügen, müssen besondere Maßnahmen ergriffen werden, da die Ummantelung keine Risse aufweisen darf und die innenliegenden elektrischen Bauteile, insbesondere die Wicklung, geschützt werden müssen.In order to comply with this requirement, in particular at low temperatures (for example -50 ° C), To comply, special measures must be taken, as the sheathing must not show any cracks and the internal electrical components, especially the winding, must be protected.

Zur Gewährleistung der ausreichenden Stoßfestigkeit wird üblicherweise die Kunststoffummantelung entsprechend verstärkt. Hierfür wird jedoch zusätzliches Material benötigt, wodurch höhere Kosten entstehen.To ensure sufficient impact resistance is usually the Reinforced plastic casing accordingly. However, this will be additional Material needed, resulting in higher costs.

Der Erfindung liegt daher die Aufgabe zugrunde, die Magnetspule mit einer äußeren Ummantelung aus Kunststoff dahingehend zu verbessern, dass zur Gewährleistung einer ausreichenden Stoßfestigkeit Material und Kosten eingespart werden können.The invention is therefore based on the object, the magnetic coil with an outer Plastic sheath to improve that to ensure a sufficient impact resistance material and costs can be saved.

Erfindungsgemäß wird diese Aufgabe durch die Merkmale des Anspruches 1 gelöst.According to the invention, this object is solved by the features of claim 1.

Die erfindungsgemäße Spule zeichnet sich dadurch aus, dass die äußere Ummantelung aus Kunststoff auf der Außenseite eine Vielzahl von Rippen als Schutz vor Stößen aufweist. Die Rippen können durch Verformung die Energie wie eine Knautschzone aufnehmen, so dass die Ummantelung selbst vor stärkerer Stoßenergie geschützt wird. The coil according to the invention is characterized in that the outer Plastic sheath on the outside a variety of ribs as Protection against shocks has. The ribs can by deformation the energy like Take a crumple zone, so that the sheath itself stronger before Shock energy is protected.

Die Anordnung und Ausgestaltung der Rippen wird so ausgeführt, dass der in den Normen definierte Prüfkörper die Rippen, aber nicht die eigentliche Ummantelungsfläche, treffen kann.The arrangement and configuration of the ribs is carried out so that in the Standards defined specimens the ribs, but not the actual Sheathing surface, can meet.

Weitere Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Further embodiments of the invention are the subject of the dependent claims.

Gemäß einem bevorzugten Ausführungsbeispiel sind Ummantelung und Rippen aus Kunststoffspritzgussmaterial hergestellt. Die Rippen sind zweckmäßigerweise parallel zueinander angeordnet und bilden Stege, deren Breite kleiner als deren Höhe ist.According to a preferred embodiment, sheath and ribs are made Plastic injection molding material produced. The ribs are expediently arranged parallel to each other and form webs whose width is smaller than their height is.

Weitere Ausgestaltungen und Vorteile der Erfindung werden im folgenden anhand der Beschreibung eines Ausführungsbeispieles und der Zeichnung näher erläutert.Further embodiments and advantages of the invention are described below the description of an embodiment and the drawing explained in more detail.

In der Zeichnung zeigen

Fig. 1
eine dreidimensionale Darstellung einer erfindungsgemäßen Magnetspule mit einem elektrischen Anschlussgehäuse und
Fig. 2
eine teilweise geschnittene Seitenansicht der Magnetspule mit Anschlussgehäuse gemäß Fig. 1.
In the drawing show
Fig. 1
a three-dimensional view of a solenoid according to the invention with an electrical connection housing and
Fig. 2
a partially sectioned side view of the solenoid coil with terminal housing of FIG .. 1

In Fig. 1 ist eine Magnetspule 1 und ein elektrisches Anschlussgehäuse 2 dargestellt, die fest miteinander verbunden sind.1, a magnetic coil 1 and an electrical connection housing 2 is shown, which are firmly connected.

Die in Fig. 2 näher dargestellte Spule 1 besteht im wesentlichen aus einem Joch 10, einem Spulenkörper 11 und einer Spulenwicklung 12. Weiterhin sind die Bauteile eines Ankersystems 3 dargestellt, das im einzelnen einen Magnetkern 30, einen Anker 31, eine Ankerführung 32 sowie eine Befestigungsmutter 33 umfasst. The coil 1 shown in more detail in Fig. 2 consists essentially of a yoke 10, a bobbin 11 and a coil winding 12. Furthermore, the components an anchor system 3, which in detail a magnetic core 30, a Anchor 31, an anchor guide 32 and a fastening nut 33 includes.

Die Magnetspule weist ferner eine äußere Ummantelung 4 aus Kunststoff auf, die üblicherweise im Spritzgussverfahren hergestellt wird. Auf der Außenseite der Ummantelung 4 ist ferner eine Vielzahl von Rippen 40 als Schutz vor Stößen vorgesehen.The magnetic coil further comprises an outer casing 4 made of plastic, the is usually produced by injection molding. On the outside of the Sheath 4 is further a plurality of ribs 40 as protection against shocks intended.

Die Rippen werden im dargestellten Ausführungsbeispiel durch Stege gebildet, deren Breite b kleiner als deren Höhe h ist. Das Verhältnis des Abstandes a zur Höhe h der Rippen liegt vorzugsweise im Bereich von 1 bis 2.The ribs are formed in the illustrated embodiment by webs whose Width b is smaller than the height h. The ratio of the distance a to the height h of the Ribs are preferably in the range of 1 to 2.

Im Rahmen der Erfindung sind selbstverständlich auch andere Formen der Rippen denkbar. Man wählt die Ausgestaltung der Rippen zweckmäßigerweise so, dass man einerseits möglichst wenig Material benötigt und andererseits die Kriterien der Stoßprüfung gemäß den zu beachtenden Normen erfüllt.In the context of the invention, of course, other forms of ribs conceivable. You choose the design of the ribs appropriately so that you on the one hand requires as little material as possible and on the other hand the criteria of Shock test according to the standards to be observed.

Die Rippen 40 bestehen sinnvollerweise aus dem gleichen Material wie die Ummantelung 4, wobei die Ummantelung und die Rippen gleichzeitig im Spritzgussverfahren hergestellt werden können.The ribs 40 are usefully made of the same material as the Sheath 4, wherein the sheath and the ribs at the same time Injection molding can be produced.

Im dargestellten Ausführungsbeispiel sind die Rippen 40 lediglich auf den Seitenflächen der Magnetspule 1 vorgesehen, da der Stoß definitionsgemäß nur von oben und von der Seite kommen kann. Der obere Bereich, in dem hier die Befestigungsmutter 33 vorgesehen ist, ist so dimensioniert, dass der Prüfköper keine Beschädigungen der Ummantelung 4 hervorrufen kann. Dementsprechend sind hier keine Rippen vorgesehen. Im Rahmen der Erfindung kann jedoch auch dieser Bereich Rippen aufweisen, wenn dies erforderlich bzw. sinnvoll ist.In the illustrated embodiment, the ribs 40 are only on the Side surfaces of the magnetic coil 1 is provided, since the shock by definition only from can come up and from the side. The upper area where the here Fixing nut 33 is provided, is dimensioned so that the Prüfköper no Damage to the sheath 4 can cause. Accordingly, here are no ribs provided. In the context of the invention, however, this can also Have area ribs, if necessary or useful.

Das separat von der Spule 1 hergestellte Anschlussgehäuse 2 wird mit der Spule 1, beispielsweise durch Kleben, Schrauben oder Vergießen fest verbunden. Das Anschlussgehäuse 2 weist ebenfalls auf seiner äußeren Umfangsfläche Rippen 20 auf, die in ihrer Ausgestaltung den Rippen 40 der Magnetspule 1 entsprechen. The connection housing 2 produced separately from the coil 1 is connected to the coil 1, for example, firmly connected by gluing, screwing or potting. The Terminal housing 2 also has ribs 20 on its outer peripheral surface on, which correspond to the ribs 40 of the magnetic coil 1 in their embodiment.

Die Rippen 40 bzw. 20 schützen das durch Magnetspule 1 und Anschlussgehäuse 2 gebildete Bauteil in ausreichendem Maße vor Stößen, wobei gegenüber herkömmlichen Ausführungen Material und Kosten für die Ummantelung eingespart werden können.The ribs 40 and 20 protect by the solenoid coil 1 and terminal housing. 2 formed component sufficiently from shocks, with respect to conventional designs saves material and costs for the sheathing can be.

Claims (9)

Magnetspule (1) mit einer äußeren Ummantelung (4) aus Kunststoff, dadurch gekennzeichnet, dass die Ummantelung auf der Außenseite eine Vielzahl von Rippen (40) als Schutz vor Stößen aufweist.Magnetic coil (1) with an outer sheath (4) made of plastic, characterized in that the sheath on the outside has a plurality of ribs (40) as protection against shocks. Magnetspule nach Anspruch 1, dadurch gekennzeichnet, dass die Rippen (40) parallel zueinander angeordnet sind.Magnetic coil according to claim 1, characterized in that the ribs (40) are arranged parallel to each other. Magnetspule nach Anspruch 1, dadurch gekennzeichnet, dass die Rippen (40) durch Stege gebildet werden, deren Breite (b) kleiner als deren Höhe (h) ist.Magnetic coil according to claim 1, characterized in that the ribs (40) are formed by webs whose width (b) is smaller than the height (h). Magnetspule nach Anspruch 1, dadurch gekennzeichnet, dass das Verhältnis des Abstandes (a) zur Höhe (h) der Rippen (40) im Bereich von 1 bis 2 liegt.Magnetic coil according to claim 1, characterized in that the ratio of the distance (a) to the height (h) of the ribs (40) is in the range of 1 to 2. Magnetspule nach Anspruch 1, dadurch gekennzeichnet, dass die Ummantelung (4) und die Rippen (40) aus dem gleichen Material gefertigt sind.Magnetic coil according to claim 1, characterized in that the sheath (4) and the ribs (40) are made of the same material. Magnetspule nach Anspruch 1, dadurch gekennzeichnet, dass die Ummantelung (4) und die Rippen (40) aus Kunststoffspritzgussmaterial hergestellt sind.Magnetic coil according to claim 1, characterized in that the sheath (4) and the ribs (40) are made of plastic injection molding material. Magnetspule nach Anspruch 1, dadurch gekennzeichnet, dass die Rippen (4) auf Seitenflächen der Magnetspule (1) vorgesehen sind.Magnetic coil according to claim 1, characterized in that the ribs (4) are provided on side surfaces of the magnetic coil (1). Magnetspule nach Anspruch 1, dadurch gekennzeichnet, dass die Magnetspule (1) mit einem elektrischen Anschlussgehäuse (2) versehen ist, der ebenfalls Rippen (20) aufweist.Magnetic coil according to claim 1, characterized in that the magnetic coil (1) with an electrical connection housing (2) is provided, which also has ribs (20). Magnetspule nach Anspruch 1, dadurch gekennzeichnet, dass die Magnetspule (1) mit einem elektrischen Anschlussgehäuse (2) versehen ist, wobei Magnetspule und Anschlussgehäuse durch Vergießen, Verschrauben oder Verkleben fest miteinander verbunden sind.Magnetic coil according to claim 1, characterized in that the magnetic coil (1) with an electrical connection housing (2) is provided, wherein the magnetic coil and the connection housing by casting, screwing or gluing are firmly connected.
EP04027139A 2004-02-27 2004-11-15 Magnetic coil Withdrawn EP1569248A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004009690A DE102004009690A1 (en) 2004-02-27 2004-02-27 solenoid
DE102004009690 2004-02-27

Publications (2)

Publication Number Publication Date
EP1569248A2 true EP1569248A2 (en) 2005-08-31
EP1569248A3 EP1569248A3 (en) 2007-05-30

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ID=34745305

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04027139A Withdrawn EP1569248A3 (en) 2004-02-27 2004-11-15 Magnetic coil

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US (1) US20050190033A1 (en)
EP (1) EP1569248A3 (en)
JP (1) JP2005245193A (en)
DE (1) DE102004009690A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006038359A1 (en) * 2006-08-09 2008-02-21 Danfoss GmbH Geschäftsbereich Industrieautomatik Solenoid coil for valve device particularly fuelling valve, has an external casing (8) of plastic, where the casing is surrounded partially from a separate protective cover

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818398A (en) * 1971-11-30 1974-06-18 Sporlan Valve Co Electromagnet coil assembly
GB2124034A (en) * 1982-06-28 1984-02-08 Imp Clevite Inc Solenoid valve

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2030648A (en) * 1931-06-25 1936-02-11 Gen Electric Magnet system
GB874211A (en) * 1957-01-14 1961-08-02 Philips Electrical Ind Ltd Improvements in or relating to waterproof apparatus casings made from moulding material reinforced by glass fibres
DE1906619U (en) * 1964-09-19 1964-12-17 Magnetschultz G M B H Spezialf ELECTROMAGNET.
CA906072A (en) * 1968-04-11 1972-07-25 B. Trench Anthony A.c. magnetically streamlined heat sink
DE8024859U1 (en) * 1980-09-17 1980-12-18 Auergesellschaft Gmbh, 1000 Berlin DIFFUSION MEASURING HEAD
JPS6062101A (en) * 1983-09-14 1985-04-10 Hitachi Cable Ltd Heat radiation construction of coil
DE9003343U1 (en) * 1990-03-21 1990-05-23 Herion-Werke GmbH & Co. KG, 70736 Fellbach Encapsulated device
US5779045A (en) * 1997-04-18 1998-07-14 Yu; Jack Ceiling fan package
DE19843673C2 (en) * 1998-09-23 2001-05-17 Imi Norgren Herion Fluidtronic Gmbh & Co Kg Encapsulated device
US6257734B1 (en) * 1999-01-19 2001-07-10 Joseph Tchira Flashlight with luminescent housing having a tritium capsule
US6175168B1 (en) * 1999-04-19 2001-01-16 Pontiac Coil, Inc. Overmolded stator for fuel metering solenoid and method of manufacturing same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818398A (en) * 1971-11-30 1974-06-18 Sporlan Valve Co Electromagnet coil assembly
GB2124034A (en) * 1982-06-28 1984-02-08 Imp Clevite Inc Solenoid valve

Also Published As

Publication number Publication date
US20050190033A1 (en) 2005-09-01
DE102004009690A1 (en) 2005-09-08
JP2005245193A (en) 2005-09-08
EP1569248A3 (en) 2007-05-30

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