EP0576813A1 - Electro aimant comprenant une tige à aimant en plastique - Google Patents

Electro aimant comprenant une tige à aimant en plastique Download PDF

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Publication number
EP0576813A1
EP0576813A1 EP93107866A EP93107866A EP0576813A1 EP 0576813 A1 EP0576813 A1 EP 0576813A1 EP 93107866 A EP93107866 A EP 93107866A EP 93107866 A EP93107866 A EP 93107866A EP 0576813 A1 EP0576813 A1 EP 0576813A1
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EP
European Patent Office
Prior art keywords
armature
rod
electromagnet
plastic
electromagnet according
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
Application number
EP93107866A
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German (de)
English (en)
Other versions
EP0576813B1 (fr
Inventor
Richard Gibas
Dieter Paul
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.)
Thomas Magnete GmbH
Original Assignee
Thomas Magnete 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6460042&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0576813(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Thomas Magnete GmbH filed Critical Thomas Magnete GmbH
Publication of EP0576813A1 publication Critical patent/EP0576813A1/fr
Application granted granted Critical
Publication of EP0576813B1 publication Critical patent/EP0576813B1/fr
Anticipated expiration legal-status Critical
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    • 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
    • H01F7/081—Magnetic constructions
    • 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
    • H01F7/16—Rectilinearly-movable armatures
    • H01F2007/1661—Electromagnets or actuators with anti-stick disc

Definitions

  • the invention relates to an electromagnet with an armature which is displaceable in a housing equipped with at least one magnet coil and is provided with a rod which passes through a central bore thereof, the rod of which rod triggers control processes, e.g. the actuation of valves, and / or is used to support the armature.
  • Such electromagnets are widely used. They are either carried out on the belly, in that the circumference of the armature is guided at least on both ends in bearing surfaces, or constructed on the rod, with the rod projecting on both sides penetrating through the bearing bushes. Finally, it is also possible to guide one of the rod ends in a bushing and to support the opposite end of the armature along its circumference. Bars made of metal are used throughout, which are equipped with grooves and which are connected to the armature by pressing material of the same into these grooves. Such equipment of an anchor proves to be disadvantageously complex, and disadvantageously it is noticeable that the rod runs in the direction of the slightly laterally extending bores and thus often deviates from the central position, so that reworking is necessary and rejects arise.
  • the invention is based on the task of simplifying the manufacture of the armature and housing of such electromagnets and thus making them cheaper and largely avoiding rejects.
  • the rod is made of plastic and is immediately injected into the armature, so that a simple, secure, firm hold and an exact central alignment are associated.
  • FIG. 1 shows a longitudinal section through an electromagnet which has a housing 1 provided with a pole piece 2, into which an upper part 3 delimiting the stroke of the armature 7 is inserted and held by folding the upper outer wall of the housing 1.
  • a magnet coil 4 is introduced into the housing, the connections of which are led to a plug 5.
  • a bronze bushing 6 is placed for the abdominal support of the armature 7.
  • the armature is provided with a rod 8 made of plastic, which consists of a cylindrical part injected into the armature via an anti-adhesive disc 11 made of a non-magnetic metallic material, which is traversed by an axially oriented, cylindrical compensating channel 9, and the rear end of which Retaining flange 10 engages around the armature backwards.
  • a rod 8 made of plastic, which consists of a cylindrical part injected into the armature via an anti-adhesive disc 11 made of a non-magnetic metallic material, which is traversed by an axially oriented, cylindrical compensating channel 9, and the rear end of which Retaining flange 10 engages around the armature backwards.
  • radial grooves are also injected into the holding flange 10.
  • the solenoid coils 4 of this electromagnet are excited, then in the case of a housing 1 filled with a liquid medium, the space additionally released by the lowering of the armature in the upper free space of the upper part 3 can be filled by this medium, which flows in via the equalization channel 9.
  • the structure of the movement of the armature is thus without a compensation groove or holes in the armature inhibiting pressure pads safely avoided, while the manufacture of the rod 8 and its connection to the anchor by simple injection of a cooling-hardening plastic mass can be effected easily and inexpensively, ie inexpensively, with the injection mold used simultaneously with the central position and orientation of the rod 8 Armature 7 are secured regardless of a possibly laterally extending bore of the armature 7.
  • the anti-adhesive disc 11 are fixed with an attachment of the sprayed rod, as is the central compensating channel 9 and the holding flange 10 with notches which facilitate the inflow are effected.
  • FIG. 2 shows a conventional armature 12, which is provided with a compensating bore 13 to compensate for the medium displaced when the armature moves, and whose rod piece 14 is inserted into a blind hole in the armature 12 and by pressing material of the armature into a groove in the rod piece is attached.
  • the storage can be carried out here as a purely prone position, as was used in FIG. 1 and is symbolized here by the arrows 15, while a rod-prone position, as symbolized by the arrows 16, is also possible.
  • FIG. 3 again shows a rod 8 formed of plastic and injected into the armature 7, which has a central passage through a compensating channel 9, and which firmly encloses the armature on both sides by the holding flange 10 and a flange 17, the flange 17 being so thick is dimensioned that it also acts as an anti-adhesive disc.
  • it has proven to be advantageous to expand the compensation system by leading a transverse bore 18 into the compensation channel 9 close to the anchor 7. This can, undisturbed by a bearing bush, via the compensating channel 9 and the transverse bore 18 Compensation of the displaced volume of the medium present in the armature space take place.
  • the holding flange 10 overlaps the upper end face of the armature 7, but the flange 17 is formed in a recess in the armature, and an anti-adhesive disk 11 is additionally pushed over the lower, projecting part of the rod 8.
  • FIG. 5 Another embodiment is shown in FIG. 5.
  • the upper holding flange is limited to a depression in the end face of the armature 7, while the projecting part of the partially recessed flange 17 acts as an anti-adhesive disc.
  • a transverse bore 18 is provided for a front rod bearing.
  • the invention is not limited to the injection of rods made of plastic; according to the invention, rods 19 made separately from plastic can also be used, which are also equipped with a compensating channel 9 and expediently have a transverse bore 18.
  • the hold is achieved by a flange 17 which is made in one piece and which, when the rod 19 is pushed in, lies at least in regions in a recess in one of the end walls of the armature 7 and, with the appropriate dimensioning, can simultaneously act as an anti-adhesive disc, while the fixing after pushing in is brought about by a locking washer 21 pushed into a groove 20 of the rod 19, which is supported against the opposite end face of the armature 7, or can be brought about by thermal deformation of the penetrating free end of the rod.
  • the invention is not restricted to wholly or partially anchored anchors, but can also be used for the rod support explained with reference to FIG. 7.
  • a conventional anchor 22 is equipped with a rod 23 which is connected to the anchor by pressing the anchor on both sides in the groove of the rod.
  • the anchor is with a compensating hole 13 provided, and for the rod bearing indicated by arrows 24, it is additionally necessary to also equip the spaces located beyond the bearing bushes with compensation channels.
  • rods 27 made separately from plastic which, as shown in dashed lines, can be inserted into a corresponding bore in the armature 7 and can be fixed by a locking washer 21 or by thermal deformation.
  • transverse bores 18 and 26 are provided in order to permit or facilitate the displacements of the medium filling the armature space that are required when the armature is displaced.
  • the invention is capable of further variants. It is essential that rods 8 and 25 made of plastic can be easily manufactured and, when injected into armature 7, can be attached exactly centrally to its contour largely independently of the course of the central armature bore. Equalization channels running in the center of the rod can be created just as easily, so that special and further precautions for the equalization of the medium in the anchor space are no longer necessary and considerable advantages already result here. In addition, however, there is also the possibility of separately producing the rods from preferably impact-resistant, heat-resistant plastic such as PA or PPS, or injecting such rods, in particular from these plastics, into the anchor, so that here too the production is further simplified and therefore cheaper.
  • the assembly is also easier and cheaper that separate anti-adhesive discs can be omitted. There are also no assembly errors caused by forgotten, fallen off or slipped off the bar, exchanged or additionally pushed on anti-adhesive discs. Likewise, there are no special operations for the complex fixing of the rods, and the armature and in particular its axial bore can be manufactured and stored within further tolerances than previously.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)
  • Magnetically Actuated Valves (AREA)
EP93107866A 1992-05-29 1993-05-14 Electro aimant comprenant une tige à aimant en plastique Revoked EP0576813B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4217871 1992-05-29
DE4217871A DE4217871A1 (de) 1992-05-29 1992-05-29 Elektromagnet mit mit einer Stange versehenem Anker

Publications (2)

Publication Number Publication Date
EP0576813A1 true EP0576813A1 (fr) 1994-01-05
EP0576813B1 EP0576813B1 (fr) 1996-09-25

Family

ID=6460042

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93107866A Revoked EP0576813B1 (fr) 1992-05-29 1993-05-14 Electro aimant comprenant une tige à aimant en plastique

Country Status (4)

Country Link
US (1) US5402093A (fr)
EP (1) EP0576813B1 (fr)
JP (1) JP3550164B2 (fr)
DE (2) DE4217871A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999062084A1 (fr) * 1998-05-28 1999-12-02 Mannesmann Rexroth Ag Disque anticollage pour dispositif d'actionnement electromagnetique
WO2009156046A1 (fr) * 2008-06-26 2009-12-30 Hydac Electronic Gmbh Dispositif d'actionnement
WO2015028219A1 (fr) * 2013-08-27 2015-03-05 Zf Friedrichshafen Ag Dispositif magnétique pour bloquer un levier de sélection de vitesse d'un véhicule dans une position prédéterminée, procédé de production d'un dispositif magnétique et procédé pour faire fonctionner un dispositif magnétique
EP3211276A1 (fr) * 2016-02-26 2017-08-30 Mitsubishi Heavy Industries, Ltd. Système et procédé de diagnostic de machine hydraulique, machine hydraulique et appareil de génération de puissance de type à énergie renouvelable

Families Citing this family (37)

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Publication number Priority date Publication date Assignee Title
US5581972A (en) * 1995-07-03 1996-12-10 Pitney Bowes Inc. Container opening apparatus
DE19716517B4 (de) * 1997-04-21 2004-08-26 Thomas Magnete Gmbh Elektromagnet mit einem Anker mit Kunststoffstange
DE19754043A1 (de) * 1997-12-05 1999-06-10 Mannesmann Rexroth Ag Magnetventil
DE19912488B4 (de) * 1999-03-19 2014-05-08 Linde Hydraulics Gmbh & Co. Kg Regelmagnet
DE19924837B4 (de) * 1999-05-29 2005-05-19 Hydraulik-Ring Gmbh Elektromagnet für ein Druckmittel steuerndes Ventil
DE19934846A1 (de) * 1999-07-24 2001-01-25 Hydraulik Ring Gmbh Elektromagnet und hydraulisches Ventil mit einem Elektromagneten
DE19953788A1 (de) * 1999-11-09 2001-05-10 Bosch Gmbh Robert Elektromagnetischer Aktuator
DE19958574A1 (de) * 1999-12-04 2001-06-07 Fev Motorentech Gmbh Verfahren zur Herstellung eines wirbelstromarmen Ankers für einen elektromagnetischen Aktuator
JP4667609B2 (ja) * 2000-02-29 2011-04-13 イーグル工業株式会社 ソレノイド
US6679567B1 (en) * 2000-09-09 2004-01-20 Kelsey-Hayes Company Control valve with overmolded armature for a hydraulic control unit
US6453930B1 (en) 2000-09-09 2002-09-24 Kelsey-Hayes Company Control valves for a hydraulic control unit and method of assembly
DE10053596A1 (de) * 2000-10-28 2002-05-02 Daimler Chrysler Ag Elektromagnetischer Aktuator zur Betätigung eines Stellgliedes
DE10110342A1 (de) * 2001-03-03 2002-09-12 Bosch Gmbh Robert Aktuator
US6688334B2 (en) * 2001-03-29 2004-02-10 Denso Corporation Solenoid valve with improved magnetic attractive force
JP3715961B2 (ja) * 2002-11-12 2005-11-16 三菱電機株式会社 電磁弁
DE10352003A1 (de) * 2003-11-07 2005-06-09 Robert Bosch Gmbh Ventil zum Steuern von Fluiden mit multifunktionalem Bauteil
JP4596890B2 (ja) * 2004-11-11 2010-12-15 シナノケンシ株式会社 アクチュエータ
DE102005050887B3 (de) * 2005-10-21 2007-03-08 Hydraulik-Ring Gmbh Elektromagnet für hydraulische Ansteuerungen
US20070158804A1 (en) * 2006-01-10 2007-07-12 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device, manufacturing method of semiconductor device, and RFID tag
DE102006054941B3 (de) 2006-11-22 2008-05-21 Thomas Magnete Gmbh Elektromagnet
DE102007005434A1 (de) * 2007-01-30 2008-07-31 Svm Schultz Verwaltungs-Gmbh & Co. Kg Doppeltwirkender elektromagnetischer Aktor
JP2009030682A (ja) * 2007-07-25 2009-02-12 Denso Corp 電磁弁
JP5275730B2 (ja) * 2008-09-17 2013-08-28 日立オートモティブシステムズ株式会社 電磁弁
JP5442980B2 (ja) * 2008-11-06 2014-03-19 カヤバ工業株式会社 ソレノイド
DE102009046186A1 (de) * 2008-11-06 2010-05-20 Kayaba Industry Co., Ltd. Solenoid-Stellglied
DE102009049109A1 (de) 2009-10-12 2011-04-14 Hydraulik-Ring Gmbh Elektromagnet sowie hydraulisches Ventil mit einem Elektromagnet
DE102011084769A1 (de) * 2011-10-19 2013-04-25 Robert Bosch Gmbh Magnetventil
CN102682950B (zh) * 2012-05-30 2013-08-21 绵阳富临精工机械股份有限公司 一种汽车电控系统执行机构电磁阀用电磁铁
EP2743491B1 (fr) * 2012-12-13 2015-08-12 Continental Automotive GmbH Corps de soupape, soupape d'injection de fluide et procédé de production d'un corps de soupape
CN105889602A (zh) * 2015-01-26 2016-08-24 王耀庭 一种涡轮增压器用新型电磁泄压阀
KR101622149B1 (ko) * 2015-02-27 2016-05-19 주식회사 만도 브레이크시스템용 솔레노이드밸브
DE102016225731A1 (de) * 2016-12-21 2018-06-21 Robert Bosch Gmbh Ventilvorrichtung
DE102017107403A1 (de) * 2017-04-06 2018-10-11 Kendrion (Villingen) Gmbh Elektromagnetische Stellvorrichtung insbesondere zum Verstellen von Nockenwellen eines Verbrennungsmotors
DE102017124485A1 (de) * 2017-10-19 2019-04-25 Eto Magnetic Gmbh Elektromagnetische Aktuatorvorrichtung und Verwendung einer solchen
IT201800007039A1 (it) * 2018-07-09 2020-01-09 Gruppo di pompaggio per alimentare combustibile, preferibilmente gasolio, ad un motore a combustione interna
DE102020116857A1 (de) 2019-07-08 2021-01-14 ECO Holding 1 GmbH Aktuator für ein Hydraulikventil und Hydraulikventil
US11946561B2 (en) * 2019-09-16 2024-04-02 Pierburg Gmbh Solenoid valve for a motor vehicle and method for producing a movement unit from an armature and a valve unit for a solenoid valve of this kind

Citations (4)

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EP0231754A1 (fr) * 1986-01-09 1987-08-12 Schramme GmbH Aimant de levage
EP0284634A1 (fr) * 1987-03-31 1988-10-05 MOOG GmbH Dispositif de positionnement électromécanique
GB2233501A (en) * 1989-06-28 1991-01-09 Bosch Gmbh Robert Electromagnetic valves
US5002835A (en) * 1990-02-15 1991-03-26 Vernay Laboratories, Inc. Armature insert

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US2832921A (en) * 1954-04-28 1958-04-29 Allied Control Co Counterbalanced armature for electromagnets
DE2255272B2 (de) * 1972-11-11 1979-04-05 Robert Bosch Gmbh, 7000 Stuttgart Stellmagnet mit einem Gehäuse
DE2303687A1 (de) * 1973-01-26 1974-08-08 Bosch Gmbh Robert Foerderaggregat fuer fluessigkeiten
US4967786A (en) * 1987-11-19 1990-11-06 Emhart Industries, Inc. Armature for a solenoid operated valve
US5089796A (en) * 1990-09-19 1992-02-18 Square D Company Earth leakage trip indicator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0231754A1 (fr) * 1986-01-09 1987-08-12 Schramme GmbH Aimant de levage
EP0284634A1 (fr) * 1987-03-31 1988-10-05 MOOG GmbH Dispositif de positionnement électromécanique
GB2233501A (en) * 1989-06-28 1991-01-09 Bosch Gmbh Robert Electromagnetic valves
US5002835A (en) * 1990-02-15 1991-03-26 Vernay Laboratories, Inc. Armature insert

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED, Vol. W, Nr. 46, 23. Dezember 1975 DERWENT PUBLICATIONS, London, Seite 12, General Engineering *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999062084A1 (fr) * 1998-05-28 1999-12-02 Mannesmann Rexroth Ag Disque anticollage pour dispositif d'actionnement electromagnetique
WO2009156046A1 (fr) * 2008-06-26 2009-12-30 Hydac Electronic Gmbh Dispositif d'actionnement
WO2015028219A1 (fr) * 2013-08-27 2015-03-05 Zf Friedrichshafen Ag Dispositif magnétique pour bloquer un levier de sélection de vitesse d'un véhicule dans une position prédéterminée, procédé de production d'un dispositif magnétique et procédé pour faire fonctionner un dispositif magnétique
CN105474335A (zh) * 2013-08-27 2016-04-06 Zf腓德烈斯哈芬股份公司 用于将车辆的选挡杆锁定在预定的位置中的磁体装置、用于制造磁体装置的方法和用于运行磁体装置的方法
CN105474335B (zh) * 2013-08-27 2018-01-26 Zf腓德烈斯哈芬股份公司 用于将车辆的选挡杆锁定在预定的位置中的磁体装置、用于制造磁体装置的方法和用于运行磁体装置的方法
US10192666B2 (en) 2013-08-27 2019-01-29 Zf Friedrichshafen Ag Magnetic device for locking a gear selector lever of a vehicle in a predetermined position, method for producing a magnetic device, and method for operating a magnetic device
EP3211276A1 (fr) * 2016-02-26 2017-08-30 Mitsubishi Heavy Industries, Ltd. Système et procédé de diagnostic de machine hydraulique, machine hydraulique et appareil de génération de puissance de type à énergie renouvelable

Also Published As

Publication number Publication date
EP0576813B1 (fr) 1996-09-25
DE4217871A1 (de) 1993-12-02
JPH06244025A (ja) 1994-09-02
US5402093A (en) 1995-03-28
DE59303935D1 (de) 1996-10-31
JP3550164B2 (ja) 2004-08-04

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