EP1382047B1 - Dispositif a bobine magnetique - Google Patents

Dispositif a bobine magnetique Download PDF

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Publication number
EP1382047B1
EP1382047B1 EP02735211A EP02735211A EP1382047B1 EP 1382047 B1 EP1382047 B1 EP 1382047B1 EP 02735211 A EP02735211 A EP 02735211A EP 02735211 A EP02735211 A EP 02735211A EP 1382047 B1 EP1382047 B1 EP 1382047B1
Authority
EP
European Patent Office
Prior art keywords
metal part
magnet coil
coil
tubular metal
coil arrangement
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
Application number
EP02735211A
Other languages
German (de)
English (en)
Other versions
EP1382047A1 (fr
Inventor
Matthias Stitz
Karl-Heinz Wittig
Hans-Jürgen Kern
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.)
Bosch Rexroth AG
Kern Technik GmbH and Co KG
Original Assignee
Bosch Rexroth AG
Kern Technik GmbH and Co KG
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 Bosch Rexroth AG, Kern Technik GmbH and Co KG filed Critical Bosch Rexroth AG
Publication of EP1382047A1 publication Critical patent/EP1382047A1/fr
Application granted granted Critical
Publication of EP1382047B1 publication Critical patent/EP1382047B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/34—Conductive members located under head of screw
    • 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
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
    • 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
    • H01F2007/062—Details of terminals or connectors for 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
    • 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
    • H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements

Definitions

  • the invention relates to a magnet coil arrangement with an encapsulated coil, which consists of a coil body provided with a winding, which is molded with plastic, and with a pushed over the encapsulated coil, this enclosing metal housing according to the preamble of claim 1.
  • Such a magnet coil arrangement is known from the DE 198 54 100 A1 known.
  • a bobbin provided with a winding is overmolded with plastic and forms an encapsulated coil.
  • a socket is formed.
  • contact tabs are held, two of which are connected to the ends of the winding and a third is assigned to the protective conductor terminal.
  • the electrical connection is made via a plugged onto the contact lugs connector.
  • the housing of the Anschlußstekkers seals the contact space formed by him and the socket from the outside.
  • a metal housing is pushed over the encapsulated coil. The metal housing engages in a recess between the socket and the outer surface of the encapsulated coil.
  • the plug-in base is provided with a recess through which a connecting element is guided.
  • the connecting element establishes the electrical contact between the contact lug assigned to the protective conductor connection and the metal housing.
  • a sealing element arranged, which rests sealingly on both the peripheral surface of the connecting element and on the inner surface of the recess in the socket.
  • the sealing element prevents moisture which has entered between the outer surface of the encapsulated coil and the metal housing from entering the terminal space.
  • the connecting element is designed as a screw, which is guided through a bore in the protective conductor connection associated contact lug and whose thread is screwed into the metal housing. The contact lug is clamped between the head of the screw and the socket.
  • the invention has for its object to ensure a permanent electrical contact between the contact lug and the metal housing in a magnetic coil arrangement of the type mentioned also in the connection of the protective conductor terminal associated contact lug with the metal housing by a screw.
  • the FIG. 1 shows the mechanical structure of a magnetic coil assembly according to the invention in the form of an exploded view.
  • the magnet coil arrangement consists of an encapsulated coil 10 and a metal housing 11, which is formed from a coil pot 12 and a pole plate 13.
  • the encapsulated coil 10 consists of a winding body 14 provided with a coil body 15 which is encapsulated with plastic 16 and to which a plug-in base 17 provided with three contact lugs is integrally formed.
  • the cross section of the contact lugs is rectangular. Of the three contact flags are in the FIG. 1 only the contact lugs 18 and 19 visible.
  • the contact lug 18 is assigned to the protective conductor connection.
  • the contact lug 19 is with one of the two winding ends of the coil 14 is connected.
  • the contact lug which is connected to the other winding end of the coil 14 is hidden by the contact lug 19.
  • the housing 20 of the connector plug seals the contact space 21 formed by the plug-in base 17 and the housing 20 to the outside. Between the plug-in base 17 and the outer surface 22 of the encapsulated coil 10, a recess 23 is provided.
  • the plug-in base 17 is held on the encapsulated coil 10 via a web 24 and a further web 25, which extends in the longitudinal direction of the encapsulated coil 10 and delimits the recess 23.
  • the bobbin 12 is provided with a slot-shaped recess 26 and a bore 27. If, during assembly of the magnet coil arrangement, the encapsulated coil 10 is pushed into the coil pot 12, the slot-shaped recess 26 engages around the web 25, which delimits the recess 23 laterally. The wall of the bobbin 12 is pushed so far into the recess 23 that the bore 27 under a in the Figures 2 and 3 shown recess 28 is located. By pressing the pole plate 13 in the bobbin 12, the solenoid assembly is closed. The bobbin 12 and the pole plate 13 form the metal housing 11, which encloses the encapsulated coil 10.
  • FIG. 2 shows a section through a detail of the in the FIG. 1 shown solenoid assembly in enlarged Presentation.
  • This contact lug is provided with the reference numeral 29.
  • a screw 31 made of electrically conductive material serves as a connecting element for the contact lug 18 and the bobbin 12.
  • the screw 31 is provided with a head 32 and a thread 33 at the end remote from the head 32.
  • the head 32 is provided with a slot 34 for receiving the blade of a screwdriver. Instead of the slot 34, a different geometry for receiving a fastening tool can be used.
  • a tubular metal part 36 is arranged between the contact lug 18 and the coil pot 12.
  • the metal part 36 is located within the recess 28 of the socket 17.
  • the one end face of the tubular metal part 36 abuts against the contact lug 18 and the other end face on the bobbin 12.
  • the screw 31 is through a hole 35 in the contact lug 18 and through the tubular metal part 36 out.
  • the in the FIG. 1 shown bore 27 is provided with a thread 37. In this thread, the thread 33 of the screw 31 is screwed.
  • the contact lug 18 and the tubular metal part 36 are clamped between the head 32 of the screw 31 and the bobbin 12.
  • the tubular metal part 36 has substantially the same mechanical properties as the screw 31. It serves primarily as a spacer.
  • the electrical current flowing between the contact lug 18 and the coil pot 12 is divided into two parallel paths, one of which leads via the screw 31 and the other via the tubular metal part 36.
  • the screw 31 is provided in the area between the head 32 and the thread 33 with an annular groove 40.
  • a sealing ring 41 is held, which serves as a sealing element between the screw 31 and the inner wall of the tubular metal part 36.
  • Another sealing ring 42 serves as a sealing element between the outer wall of the tubular metal part 36 and the inner wall of the recess 28 of the socket 17.
  • the recess 28 has, in particular in the region of the sealing ring 42, ie in the sealing region, a circular cross-section.
  • the sealing rings 41 and 42 prevent moisture, which has penetrated gaps between the encapsulated coil 10 and the metal housing 11, further into the terminal space 21 (see FIG. 1 ) and leads there to corrosion.
  • the screw 31 is provided with an accessible from its head side internal thread 45. It serves for the attachment of in the FIG. 1 schematically illustrated housing 20 of the connector.
  • the screw 31 thus serves not only to connect the protective earth terminal associated contact lug 18 with the metal housing 11 but also for attaching the connector to the socket 17 of the encapsulated coil 10th
  • FIG. 3 shows one of the FIG. 2 corresponding section through the magnetic coil assembly in the region of the socket 17. While in the FIG. 2 the contact lug 18 and the tubular metal part 36 are separate components, these two components are in the FIG. 3 to a common component 48 with a contact lug 18 'and a tubular Section 36 'summarized. In her further. Details agree Figures 2 and 3 match. Due to the design of contact lug and tubular metal part as a component, the number of items is reduced. Also, the component 48 can be handled more easily than two separate items. This simplifies assembly of the solenoid assembly. The component 48 can be produced inexpensively as a deep-drawn part.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

Selon l'invention, la bobine d'un dispositif à bobine magnétique présente un corps de bobine qui comprend un enroulement (14) et est encastré par extrusion dans du plastique (17). Contre la bobine est formé un socle à fiches dotés de fiches de contact dont l'une permet la connexion du conducteur de mise à la terre (18). Au-dessus de la bobine se trouve un boîtier métallique (12). La connexion du boîtier métallique à la fiche de contact associée au conducteur de mise à la terre, s'effectue grâce à un élément de connexion qui passe à travers un évidement du socle à fiches. Entre l'élément de connexion et l'évidement se trouve un élément d'étanchéité (42) qui empêche la pénétration de liquide issu de la zone comprise entre le boîtier métallique et la bobine, vers la zone dans laquelle un élément d'enfichage est connecté aux fiches de contact. Afin d'améliorer la connexion électrique entre la fiche de contact associée au conducteur de mise à la terre et le boîtier métallique, pour un élément de connexion (31) vissé dans le boîtier métallique, une pièce métallique cylindrique (36) est disposée entre la fiche de contact et le boîtier métallique. Entre l'élément de connexion et la pièce métallique cylindrique, ainsi qu'entre celle-ci et l'évidement du socle à fiches, se trouve un élément d'étanchéité (41, 42) respectif. Des dispositifs à bobine magnétique de ce type sont utilisés pour des vannes hydrauliques à commande électromagnétique, dans lesquelles des pièces métalliques accessibles de l'extérieur doivent être connectées à un conducteur de mise à la terre.

Claims (9)

  1. Système de bobine magnétique doté d'une bobine encapsulée constituée d'un corps de bobine doté d'un enroulement et englobé dans une matière synthétique, et présentant
    - un boîtier métallique passé au-dessus de la bobine encapsulée et entourant cette dernière,
    - un socle d'enfichage formé sur la bobine encapsulée et doté d'ailettes de contact dont une est associée à une borne de conducteur de protection,
    - une découpe entre le socle d'enfichage et la surface extérieure de la bobine encapsulée et dans laquelle le boîtier métallique s'engage,
    - un élément de liaison passé à l'intérieur du socle d'enfichage par un évidement et par lequel l'ailette de contact associée à la borne du conducteur de protection est reliée au boîtier métallique et
    - un élément d'étanchéité qui entoure l'élément de liaison,
    caractérisé en ce que
    - une pièce métallique tubulaire (36 ; 36') est disposée entre l'ailette de contact (18 ; 18') associée à la borne du conducteur de protection et le boîtier métallique (12),
    - en ce que l'élément de liaison (31) s'étend à l'intérieur de la pièce métallique tubulaire (36 ; 36'),
    - en ce que l'élément d'étanchéité (41) est disposé entre l'élément de liaison (31) et la pièce métallique tubulaire (36 ; 36') et
    - en ce qu'un autre élément d'étanchéité (42) est disposé entre la pièce métallique tubulaire (36 ; 36') et l'évidement (28) ménagé à l'intérieur du socle d'enfichage (17).
  2. Système de bobine magnétique selon la revendication 1, caractérisé en ce que l'élément de liaison est configuré comme vis (31) dont une partie filetée (33) est vissée dans le boîtier métallique (12), la pièce métallique tubulaire (36 ; 36') étant serrée entre la tête (32) de la vis (31) et le boîtier métallique (12).
  3. Système de bobine magnétique selon la revendication 2, caractérisé en ce que l'élément d'étanchéité (41) prévu dans la vis (31) et la pièce métallique tubulaire (36 ; 36') est configuré comme bague d'étanchéité.
  4. Système de bobine magnétique selon la revendication 3, caractérisé en ce que la partie de la vis (31) située entre la tête (32) et le filet (33) a une forme cylindrique et est dotée d'une rainure annulaire (40).
  5. Système de bobine magnétique selon l'une des revendications précédentes, caractérisé en ce que l'évidement (28) ménagé dans le socle d'enfichage (17) présente une section transversale circulaire dans sa partie assurant l'étanchéité et en ce que l'autre élément d'étanchéité (42) prévu entre l'élément de liaison (31) et la pièce métallique tubulaire (36 ; 36') est configuré comme bague d'étanchéité.
  6. Système de bobine magnétique selon l'une des revendications précédentes, caractérisé en ce que la pièce métallique tubulaire (36') et l'ailette de contact (18') associée à la borne de conducteur de protection sont configurées comme composant (48).
  7. Système de bobine magnétique selon la revendication 6, caractérisé en ce que la pièce métallique tubulaire (36') est formée sur l'ailette de contact (18') associée à la borne du conducteur de protection.
  8. Système de bobine magnétique selon la revendication 6, caractérisé en ce que la pièce métallique tubulaire (36') et l'ailette de contact (18') associée à la borne du conducteur de protection sont configurées comme pièce emboutie.
  9. Système de bobine magnétique selon l'une des revendications précédentes, caractérisé en ce que l'élément de liaison (31) est doté d'un filet intérieur (45) qui permet de fixer une fiche de raccordement sur le socle d'enfichage (17).
EP02735211A 2001-04-23 2002-04-03 Dispositif a bobine magnetique Expired - Lifetime EP1382047B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10119939 2001-04-23
DE10119939A DE10119939A1 (de) 2001-04-23 2001-04-23 Magnetspulenanordnung
PCT/EP2002/003667 WO2002089155A1 (fr) 2001-04-23 2002-04-03 Dispositif a bobine magnetique

Publications (2)

Publication Number Publication Date
EP1382047A1 EP1382047A1 (fr) 2004-01-21
EP1382047B1 true EP1382047B1 (fr) 2009-12-23

Family

ID=7682459

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02735211A Expired - Lifetime EP1382047B1 (fr) 2001-04-23 2002-04-03 Dispositif a bobine magnetique

Country Status (5)

Country Link
US (1) US6848919B2 (fr)
EP (1) EP1382047B1 (fr)
CZ (1) CZ301356B6 (fr)
DE (2) DE10119939A1 (fr)
WO (1) WO2002089155A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE451597T1 (de) * 2004-01-27 2009-12-15 Mettler Toledo Ag Spule mit feuchtigkeitsschutzschichten
DE102005036105B3 (de) * 2005-08-01 2006-11-16 Semikron Elektronik Gmbh & Co. Kg Elektrisches Bauteil
FR2890793B1 (fr) * 2005-09-15 2007-12-07 Eaton Sam Sa Monegasque Dispositif de raccordement d'un connecteur a un solenoide de pilotage d'un injecteur
US7517235B2 (en) * 2006-12-28 2009-04-14 General Electric Company Press fit connection for mounting electrical plug-in outlet insulator to a busway aluminum housing
DE202007005132U1 (de) 2007-04-04 2008-08-14 Eto Magnetic Gmbh Elektromagnetische Stellvorrichtung
CN103244678A (zh) * 2013-05-17 2013-08-14 艾通电磁技术（昆山）有限公司 电磁铁密封结构
DE102013226619A1 (de) * 2013-12-19 2015-06-25 Robert Bosch Gmbh Verfahren zur Herstellung eines Polrohrs, Polrohr für einen Elektromagneten und Magnetventil
FR3038782B1 (fr) * 2015-07-06 2019-05-17 Aptiv Technologies Limited Boitier etanche et procede de connexion de ce boitier a un cable electrique

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1348792A (fr) * 1963-02-18 1964-01-10 Zahnradfabrik Friedrichshafen électro-aimant de commande avec dispositif d'étanchéité
DE2939006A1 (de) * 1979-09-26 1981-04-02 Siemens AG, 1000 Berlin und 8000 München Vollisoliertes, metallgekapseltes elektrisches schaltfeld
IT1215911B (it) * 1988-02-18 1990-02-22 Cembre Srl Contatto elettrico permanente applicabile sull'anima di rotaie esimili.
DE4341087C2 (de) * 1993-12-02 1996-02-08 Bso Steuerungstechnik Gmbh Abgedichtete Schaltvorrichtung
JPH09161890A (ja) * 1995-12-07 1997-06-20 Asahi Electric Works Ltd 導電接続構造を有する電気接続装置およびこれの接続面研磨工具
US5710535A (en) * 1996-12-06 1998-01-20 Caterpillar Inc. Coil assembly for a solenoid valve
JP2000030961A (ja) * 1998-07-15 2000-01-28 Sumitomo Wiring Syst Ltd モールドコイル及びその製造方法
US6121865A (en) * 1998-08-03 2000-09-19 Caterpillar Inc. Solenoid assembly having a sealing device for the electrical leads
DE19854100B4 (de) * 1998-11-24 2013-10-10 Bosch Rexroth Aktiengesellschaft Magnetspulenanordnung

Also Published As

Publication number Publication date
DE50214121D1 (de) 2010-02-04
WO2002089155A1 (fr) 2002-11-07
US20040183650A1 (en) 2004-09-23
US6848919B2 (en) 2005-02-01
CZ20032892A3 (en) 2004-03-17
EP1382047A1 (fr) 2004-01-21
DE10119939A1 (de) 2002-10-24
CZ301356B6 (cs) 2010-01-27

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