WO2007045375A1 - Electroaimant - Google Patents

Electroaimant Download PDF

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Publication number
WO2007045375A1
WO2007045375A1 PCT/EP2006/009758 EP2006009758W WO2007045375A1 WO 2007045375 A1 WO2007045375 A1 WO 2007045375A1 EP 2006009758 W EP2006009758 W EP 2006009758W WO 2007045375 A1 WO2007045375 A1 WO 2007045375A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
armature
bearing sleeve
piston
sleeve
Prior art date
Application number
PCT/EP2006/009758
Other languages
German (de)
English (en)
Inventor
Johannes Alken
Dieter Paul
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
Application filed by Thomas Magnete Gmbh filed Critical Thomas Magnete Gmbh
Priority to EP06806135A priority Critical patent/EP1938342A1/fr
Publication of WO2007045375A1 publication Critical patent/WO2007045375A1/fr

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

Definitions

  • the invention relates to an electromagnet having a cylindrical hollow magnet body, which has a yoke, a pole core with a characteristic influencing armature counterpart and a housing, and a cylindrical coil and a cylindrical armature with guide rod and armature piston, which is arranged displaceably to the pole.
  • the electromagnet has a pot-like, closed on one side housing, in which the cylindrical hollow magnetic body is inserted.
  • This consists of a yoke, a pole core with a characteristics influencing armature counterpart and a cylindrical coil and a cylindrical armature.
  • the course of the magnetic force-stroke characteristic can be influenced by constructive design of the magnetic circuit.
  • the course depends primarily on the design of the working air gap and the ferromagnetic bodies surrounding the working moment, such as the armature and the armature counterpart. All measures that lead to a targeted change in the magnetic force-stroke characteristic by the geometry of the armature and armature counterpart, are referred to as geometric characteristic influencing.
  • geometric characteristic influencing For the design of the armature-Ankeralle Federation Inc.
  • Manufacturing technology favorable to manufacture is the arrangement in which the armature counterpart has a larger diameter than the armature and a recess for the anchor.
  • the armature consists of a guide rod and the armature piston, wherein the guide rod passes through the pole core in the direction of the open side of the housing and protrudes as an actuator to the outside.
  • the armature piston is slidably disposed together with the guide rod within the magnet body and is moved by the energization of the coil.
  • the anchor piston is guided in the overall component.
  • Such magnet armature bearings are known in the art. It often occurs the problem on that the anchor piston is not stored and guided centrally to the pole core. This results on the one hand from manufacturing inaccuracies and on the other hand from relatively large tolerances, which are due to the assembly of several modules. A not exactly centered piston position leads to a non-uniform centric magnetic flux. The resulting transverse forces act on the bearings and lead to unwanted large hysteresis of the magnet.
  • the magnetic flux must be interrupted by the working air gap so that it can also enter the armature.
  • the armature space is sealed with O-rings to the outside.
  • O-rings are usually the critical component with regard to the media and temperature compatibility of the magnet.
  • the grooves required for the bearing of the O-rings reduce the magnetic flux in such a way that a larger magnet must be used to achieve a predefined defined force.
  • the invention is based on the object to provide an electromagnet generic type, to which a centric as possible leadership of the armature piston in the pole core is achieved in order to achieve an improved magnetic flux passage through the magnetic body and to reduce hysteresis.
  • the invention proposes that the armature piston is mounted axially displaceably in a bearing tube or a bearing sleeve, wherein the bearing tube or the bearing sleeve ends at one end within the pole core or within the armature counterpart of the pole core and the other ends to Ü over the yoke, in particular to the local transverse wall of the housing ranges, and at this end in the case of training as a bearing sleeve having the sleeve bottom.
  • the anchor piston is mounted centrally in the region of the pole core or the armature counterpart of the pole core in a bearing tube or a bearing sleeve, which preferably consists of thin, hard material and has a precisely defined inner and outer diameter and a precisely defined wall thickness, wherein the bearing tube or the Sleeve made of non-magnetic material.
  • the bearing tube or the bearing sleeve is disposed within the armature counterpart forming part of the pole core and is not performed as before around this part outside.
  • the armature piston has at each end provided on its circumference bearing point, which bears against the inner surface of the bearing tube or the bearing sleeve.
  • the bearing piston There are provided in particular at the two ends of the bearing piston two fixed on its circumference bearing points, which allow a transition of the magnetic lines of force on the armature or the armature piston.
  • a second bearing point in the region of the anchor rod, ie the extension of the anchor piston is arranged according to the prior art. This bearing can be omitted by the two bearing points of the anchor piston exclusively in the piston area.
  • the type of storage with a larger diameter than when stored in the region of the rod has the positive effect that a lower bearing load per unit area occurs, whereby the continuous load of the armature can be considerably extended.
  • the arrangement of the bearing tube or the bearing sleeve in the interior of the region of the armature counterpart can be dispensed with the arrangement of O-ring grooves in the pole or pole core. This eliminates the negative influence of these grooves on the magnetic flux.
  • the overall design of the magnet is more compact and less expensive.
  • the bearing tube or the bearing sleeve can first be positively and non-positively connected to the pole in a force-fitting manner. Subsequently, the armature counterpart is then guided over the pipe or the pipe sleeve and firmly connected to the pole.
  • the armature piston and the bearing tube or the bearing sleeve is preferably processed smoothly at their contact surfaces.
  • the anchor piston has rounded bearing edges.
  • the bearing tube or the bearing sleeve is pressure-resistant force and positively connected within the Magnetpolkernes. This is especially important when sealing with O-rings.
  • the material used for the sealing in particular their media and temperature resistance, as well as their magnetic properties are essential selection criteria for the magnet.
  • O-rings the ratio of O-ring surface in the pole to the magnetic flux surface is always unfavorable, the smaller the magnet, the magnets can be made more compact by eliminating the O-ring grooves. The latter is particularly important in the pressure-tight design of the magnet of importance. With sufficient sealing and / or suitable connection of the armature counterpart with the bearing tube or the sleeve, the use of O-ring seals is unnecessary.
  • the anchor piston For storage in the bearing tube or in the bearing sleeve, the anchor piston on a special surface geometry on its peripheral surface.
  • the armature piston At the points which are not provided as bearing surfaces and where no force field is provided for the transition to the armature, the armature piston in the longitudinal direction on its peripheral surface on a region with a smaller diameter.
  • two arranged on the circumference in the longitudinal direction elevation surfaces are formed, which represent the bearing points for the bearing sleeve or the bearing tube, which always have the same radial distance from the armature counterpart.
  • the first bearing point is provided at the end of the anchor piston, where the bearing sleeve or the bearing tube with the anchor counterpart is firmly connected.
  • the second bearing point is advantageously arranged in the yoke region, ie at the opposite end of the anchor piston. To take into account the armature stroke in the longitudinal direction, the second survey has a raised to the stroke of the anchor elevation surface.
  • Figure 1 seen a first embodiment of the invention in the central longitudinal section
  • Figure 2 shows a variant in the same view
  • Figure 3 is a detail of Figures 1 and 2 also seen in the central longitudinal section;
  • Figure 4 seen a further detail of Figure 1 and 2 in the central longitudinal section;
  • FIG. 5 shows a third embodiment of the invention in the view of Figure 1;
  • FIG. 6 shows a fourth embodiment of the invention in the view according to FIG.
  • FIG. 7 shows a further embodiment of the invention in the view according to FIG.
  • FIG. 1 and also the further embodiments of the invention show an electromagnet, in particular a switching magnet, in cross-section in the de-energized state.
  • a cylindrical hollow magnet body with a yoke 4, a pole core 3, an outer cone shaped anchor counterpart 5 and a cylindrically shaped coil 1 and a cylindrical armature 6 with guide rod 8 and armature piston 7 is arranged.
  • the coil 1 a magnetic field is generated in the energized state, which is enclosed in the housing 2.
  • the yoke 4 is L-shaped in cross-section. It extends with its radial part of the wall of the housing 2 to the receiving opening for the armature 6 and the anchor piston 7 with the associated bearing part and in the longitudinal direction in the direction of the cylindrically shaped coil. 1
  • the armature piston 7 When energized, the force of the magnetic field is exerted on a coaxially disposed inside the housing 2 anchor 6, which consists of the armature piston 7 and arranged in the direction of the armature counterpart 5 guide rod 8, which passes through the pole core 3 and the open end of the sleeve-like housing 2 exit.
  • the armature piston 7 is arranged in a thin-walled bearing sleeve 9, which abuts with its closed end against the corresponding transverse wall of the housing 2 and aligned with its mouth rectified to the mouth of the housing.
  • the bearing sleeve 9 is arranged at its open end (left in drawing figure 1) only in the interior of the armature counterpart 5 or the pole core.
  • the armature counterpart 5 is designed as an inwardly directed outer cone.
  • the cylindrical armature piston 7 of the electromagnet is shown separately in section in FIG.
  • This armature piston 7 has an inner bore for receiving the guide rod 8, not shown in Figure 3.
  • the guide of the armature piston 7 on the inner wall of the bearing sleeve 9 is defined to two Bearing 10 reduced, which are arranged in the longitudinal direction of the armature piston 7 at a distance from each other. These bearings 10 form elevations relative to the other non-bearing surfaces 11, ie areas of larger diameter.
  • the two provided bearing points 10 are realized, for example, by radial removal of the non-bearing area 11 in the middle between the two bearing points 10.
  • the longitudinally extending surface of the arranged in the cone area bearing (left in Figure 1) is shorter than the rear (in Figure 1 right) bearing 10.
  • the latter bearing 10 is extended by the stroke of the armature 6, in particular the path of the armature piston 7, otherwise no force field transition could take place there.
  • the anchor piston 7 has rounded bearing points 10.
  • the bearing sleeve 9 extends from the pole core 3 as a stop over the entire length of the armature piston 7. In Figure 4, for clarity, the bearing sleeve 9 is shown separately in the central longitudinal section.
  • each radially 2 O-ring seals 12 are shown, which are arranged at the end of the yoke 4 and in the cone region of the armature counterpart 5.
  • the embodiment of Figure 2 has over the embodiment of Figure 1 only a shortened yoke 4, which is designed in the manner of a disc. Also in this embodiment, which is advantageous for the production of the yoke 4, a transverse force-free mounting of the armature piston 7 is possible. The storage of the piston 7 is completely unimpaired by the shortened shape of the yoke 4.
  • FIG. 5 shows a variant of the bearing according to the invention of the armature piston 7 with a shared armature counterpart 5. That is to say, there the conical part 5 is a separate component from the pole core 3. The bearing sleeve 9 is guided within the separate cone part 5 to the stop on the radial wall of the pole 3. The contact surface of the cone 5 with the sleeve 9 is thus increased. Due to the enlarged bearing surface, the bearing sleeve 9 is sealed in this area so that it is also given an adequate seal to the outside. Arrangements of O-ring seals are no longer required in such an embodiment.
  • the embodiment of Figure 6 differs from the embodiment of Figure 5 only by a shortened length of the bearing sleeve 9, which does not extend to the radial wall of the pole 3, but ends at a distance from this and is connected to the armature counterpart 5. Also in this arrangement, no O-ring seals 12 are required.
  • connection point of the bearing sleeve 9 with the pole 3 is realized by a conventional O-ring seal.
  • This type of connection provides a possible alternative connection to other types of connection according to the examples of the previously described embodiments.

Landscapes

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

Abstract

Electroaimant qui possède un corps magnétique creux cylindrique comportant une culasse (4), un noyau polaire (3) doté d'un pendant (5) d'induit influençant les lignes caractéristiques et un boîtier (2), ainsi qu'une bobine cylindrique (1) et un induit cylindrique (6) pourvu d'une tige de guidage (8) et d'un piston (7) d'induit qui est monté coulissant par rapport au pôle. L'objet de la présente invention est l'amélioration du passage du flux magnétique et la réduction des pertes par hystérésis. A cet effet, le piston (7) d'induit est monté de manière à coulisser axialement dans un tube de support ou un manchon de support (9). Le tube de support ou le manchon de support (9) se termine à une extrémité à l'intérieur du noyau polaire (3) ou à l'intérieur du pendant (5) d'induit du noyau polaire (3) et se prolonge à l'autre extrémité au-delà de la culasse, en particulier jusqu'à la paroi transversale concernée du boîtier (2). En cas de configuration en tant que manchon de support, le fond du manchon se trouve à cette extrémité.
PCT/EP2006/009758 2005-10-18 2006-10-10 Electroaimant WO2007045375A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06806135A EP1938342A1 (fr) 2005-10-18 2006-10-10 Electroaimant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510049663 DE102005049663A1 (de) 2005-10-18 2005-10-18 Elektromagnet
DE102005049663.6 2005-10-18

Publications (1)

Publication Number Publication Date
WO2007045375A1 true WO2007045375A1 (fr) 2007-04-26

Family

ID=37499322

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/009758 WO2007045375A1 (fr) 2005-10-18 2006-10-10 Electroaimant

Country Status (3)

Country Link
EP (1) EP1938342A1 (fr)
DE (1) DE102005049663A1 (fr)
WO (1) WO2007045375A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102592780A (zh) * 2012-03-09 2012-07-18 方平 基于弹性装置的动铁式电-机械转换器

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006060270B4 (de) 2006-12-20 2012-12-06 Thomas Magnete Gmbh Elektromagnet
DE102008059012A1 (de) * 2008-11-26 2010-05-27 Schaeffler Kg Elektromagnetische Stelleinheit für ein hydraulisches Wegeventil und Verfahren zu dessen Montage
DE102009043320B4 (de) * 2009-09-28 2012-01-12 Hydraulik-Ring Gmbh Elektrohydraulisches Ventil
DE102010014731B4 (de) * 2010-04-13 2014-03-06 Thomas Magnete Gmbh Verschleißfester Proportionalmagnet
DE102010024943B8 (de) 2010-06-24 2013-02-07 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Elektromagnetische Ventilvorrichtung mit kopfseitig abgestützten und bodenseitig entlasteten Ankerführungsrohr
DE102014108700A1 (de) 2014-06-20 2015-12-24 Hilite Germany Gmbh Zentralaktuator für einen Schwenkmotorversteller einer Nockenwelle
DE102015102066A1 (de) 2015-02-13 2016-08-18 Hilite Germany Gmbh Zentralaktuator für einen Schwenkmotorversteller einer Nockenwelle
DE102016123827A1 (de) 2016-12-08 2018-06-14 ECO Holding 1 GmbH Zentralaktuator für ein Magnetventil eines Schwenkmotorverstellers
DE102018000269A1 (de) 2017-02-25 2018-08-30 Thomas Magnete Gmbh Elektromagnet und Verfahren zur Herstellung des Elektromagneten
DE102017129599A1 (de) 2017-12-12 2019-06-13 ECO Holding 1 GmbH Aktuatorbaugruppe mit reduziertem Lufteinschluss
CN111312468B (zh) * 2019-12-14 2021-08-31 哈尔滨工业大学 一种高频开关型电磁铁的电容储能驱动方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58210605A (ja) * 1982-06-02 1983-12-07 Nissan Motor Co Ltd ソレノイド
DE3227765A1 (de) * 1982-07-24 1984-01-26 Alfred Teves Gmbh, 6000 Frankfurt Proportionalmagnet
DE4412621A1 (de) * 1994-04-13 1995-10-19 Bosch Gmbh Robert Elektromagnet, insbesondere Proportionalmagnet
WO1998040260A1 (fr) * 1997-03-11 1998-09-17 Kelsey-Hayes Company Sous-ensemble armature et manchon pour soupapes de commande du systeme de freinage d'un vehicule, et leur procede de fabrication
DE19928207A1 (de) * 1999-06-19 2000-12-21 Bosch Gmbh Robert Magnetventil
DE19934846A1 (de) * 1999-07-24 2001-01-25 Hydraulik Ring Gmbh Elektromagnet und hydraulisches Ventil mit einem Elektromagneten
DE19941942A1 (de) * 1999-09-03 2001-04-05 Daimler Chrysler Ag Betätigungselement mit einem Dauermagneten
EP1313110A2 (fr) * 2001-10-26 2003-05-21 INA-Schaeffler KG Electro-aimant, particulièrement un électro-aimant proportionnel pour la commande d'une valve hydraulique
DE10337207A1 (de) * 2003-08-13 2005-03-17 Zf Lenksysteme Gmbh Proportional-Elektromagnet

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10238840A1 (de) * 2002-08-23 2004-03-04 Thomas Magnete Gmbh Magnetanordnung

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58210605A (ja) * 1982-06-02 1983-12-07 Nissan Motor Co Ltd ソレノイド
DE3227765A1 (de) * 1982-07-24 1984-01-26 Alfred Teves Gmbh, 6000 Frankfurt Proportionalmagnet
DE4412621A1 (de) * 1994-04-13 1995-10-19 Bosch Gmbh Robert Elektromagnet, insbesondere Proportionalmagnet
WO1998040260A1 (fr) * 1997-03-11 1998-09-17 Kelsey-Hayes Company Sous-ensemble armature et manchon pour soupapes de commande du systeme de freinage d'un vehicule, et leur procede de fabrication
DE19928207A1 (de) * 1999-06-19 2000-12-21 Bosch Gmbh Robert Magnetventil
DE19934846A1 (de) * 1999-07-24 2001-01-25 Hydraulik Ring Gmbh Elektromagnet und hydraulisches Ventil mit einem Elektromagneten
DE19941942A1 (de) * 1999-09-03 2001-04-05 Daimler Chrysler Ag Betätigungselement mit einem Dauermagneten
EP1313110A2 (fr) * 2001-10-26 2003-05-21 INA-Schaeffler KG Electro-aimant, particulièrement un électro-aimant proportionnel pour la commande d'une valve hydraulique
DE10337207A1 (de) * 2003-08-13 2005-03-17 Zf Lenksysteme Gmbh Proportional-Elektromagnet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102592780A (zh) * 2012-03-09 2012-07-18 方平 基于弹性装置的动铁式电-机械转换器

Also Published As

Publication number Publication date
DE102005049663A1 (de) 2007-04-26
EP1938342A1 (fr) 2008-07-02

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