WO2001054146A1 - Electroaimant - Google Patents

Electroaimant Download PDF

Info

Publication number
WO2001054146A1
WO2001054146A1 PCT/EP2001/000565 EP0100565W WO0154146A1 WO 2001054146 A1 WO2001054146 A1 WO 2001054146A1 EP 0100565 W EP0100565 W EP 0100565W WO 0154146 A1 WO0154146 A1 WO 0154146A1
Authority
WO
WIPO (PCT)
Prior art keywords
plates
actuator
bearing
armature
yoke
Prior art date
Application number
PCT/EP2001/000565
Other languages
German (de)
English (en)
Inventor
Heinz Leiber
Dirk Dünkel
Frank KÄHNY
Ralf Hecker
Stefan Masak
Original Assignee
Tyco Electronics Amp 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 Tyco Electronics Amp Gmbh filed Critical Tyco Electronics Amp Gmbh
Priority to DE50103445T priority Critical patent/DE50103445D1/de
Priority to EP01942784A priority patent/EP1163687B1/fr
Publication of WO2001054146A1 publication Critical patent/WO2001054146A1/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
    • H01F7/14—Pivoting armatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/02—Cores, Yokes, or armatures made from sheets
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
    • F01L2009/2105—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids comprising two or more coils
    • F01L2009/2109—The armature being articulated perpendicularly to the coils axes

Definitions

  • the invention relates to electromagnets with the features of the preamble of claim 1.
  • Yokes of magnetic circuits for electromagnets are screwed together or are positively locked together by beads in the metal sheets. This is the common technique, e.g. B. for ignition transformers. Most of these yokes are also encapsulated with plastic. The problem is the internal stress of thin sheets, which act like disc springs, and very difficult to achieve with a tight bond, in which each sheet lies in the bond without play, by bracing with screws.
  • the invention is based on the object of achieving great stiffness with small deformations, with small dimensions and low weight.
  • the magnets on the anchor must be easily adjustable.
  • Sub-claims 2 to 11 contain configurations that further support the task solution.
  • Claims 12 to 26 describe an application of the invention to an actuator in which the invention has a particularly favorable effect.
  • the actuators must be stable on the cylinder head or an actuator Carrier or a tub can be attached to absorb the relatively high forces.
  • the stiffness is mainly achieved by the yoke stiffeners, which not only have to absorb the magnetic forces, but also the bearing forces and the supporting torque of the torsion bar on the bearing plate when the actuator is designed with a pivotable armature and use of a torsion spring. Small dimensions are achieved by relatively thin bearing plates, which are also advantageous for the coil connections described later.
  • the decisive factor is the good non-positive and / or positive connection between the bearing plates and the yoke packs, since the yoke stiffeners through the yoke side plates divert the forces from the bearing plate into it, so that complex, thick bearing plates are prevented.
  • the rigidity is achieved by appropriate coordination of the yoke package with the yoke stiffeners and an appropriate design of the bearing plates.
  • Claim 29 describes a method for the inexpensive manufacture of the electromagnet or the actuator.
  • Fig. 1 shows the structure of an actuator for driving a valve of an internal combustion engine in
  • Fig. 3 shows a partially alternative training.
  • FIGS. 4 and 5 shows a detail of FIGS. 4 and 5.
  • FIGS. 1 and 2 An electromagnetic actuator 1 for valve actuation of an internal combustion engine is partially shown in FIGS. 1 and 2.
  • the actuator 1 has two electromagnets 2 and 3 consisting of two-pole yokes 2a and 3a and one winding 2b and 3b each.
  • the electromagnets 2 and 3 work together with a lever 4 which is connected to an anchor tube 4a.
  • This anchor tube 4a is pivotally mounted about an axis 5.
  • a torsion spring 6 Arranged in the interior of the anchor tube 4a is a torsion spring 6 in the form of a torsion bar, which is rigidly clamped at one end and is connected at its other end to the anchor tube 4a.
  • the torsion bar 6 generates, for. B. both spring forces acting on the lever 4.
  • the lever 4 carries an armature 7, which cooperates with the electromagnets 2 and 3 and generates the pivoting movement.
  • the right end 4b of the lever 4 acts on a valve stem, not shown.
  • FIG. 2 shows that the yoke 2a is composed of lamellae 2a ⁇ made of magnetic material. It is for
  • the entire space between the bearing plates 8 is filled with lamellae 2a ⁇ .
  • the bearing of the lever 4 and thus the armature 7 is accommodated by means of the bearing tube 4a.
  • the two bearing plates 8 are connected to one another by two yoke side plates 9 and 10, the side plates 9 and 10 being welded into the bearing plates 8.
  • the lamellae 2a ⁇ have small bulges 2a ⁇ ⁇ , via which they are suspended in the side plates 8, 9.
  • the side plates 9 and 10 can be made of non-magnetic material and they can be electrically insulated from the slats 2a ⁇ by insulation 11. This isolation can also be done through an air gap.
  • the side plate 10 is designed as a profile so that it can encompass the winding 2 b.
  • the profile also increases the bending stiffness of the side plate 10 in the transverse direction.
  • the two side plates 9 and 10 are attached to the upper end of the yoke, the bulge of which has little magnetic flux and thus also generates low eddy currents.
  • the electromagnet 2 is assembled in the following way: First, the side plates 9, 10 are only loosely connected to the bearing plates 8. The slats 2a are suspended in the side plates 9, 10. The armature is brought into the end position shown in FIG. 1 and the slats or the plate pack with the side plates are moved as a stable connection so that the slats rest directly on the armature 7 or lie with a predetermined small air gap to the armature 7. Now the yoke, e.g. B. pressed by magnetic force on the armature and in addition the two bearing plates 8 are pressed onto the disk pack 2a and then the side plates 9, 10 are connected to the bearing plates at 12, for. B. welded, soldered or caulked. If necessary, additional tension is generated on the side plates.
  • the yoke e.g. B. pressed by magnetic force on the armature and in addition the two bearing plates 8 are pressed onto the disk pack 2a and then the side plates 9, 10 are connected to the bearing plates at 12, for.
  • the plates can have mutually fitting toothings and / or, for example, near the poles, eg. B. with 13 welds of the lamellae 2 to each other, and / or an overmolding of the plate pack can be provided.
  • the lamellae are preferably welded to the side plates, the lamella packet being able to be pressed together beforehand with a defined force.
  • the electromagnet 3 can be assembled in an equivalent manner.
  • FIG. 3 shows an exemplary embodiment in which the left side plate 10 is designed as in FIGS. 1 and 2.
  • the right side plate 19 covers the side surface of the yoke 2a to a much greater extent than the side plate 9 of FIGS. 1 and 2.
  • This side plate 19 is welded along its edges 20 to at least part of the slats 2a.
  • This side plate can be made of non-magnetic material; with the exception of the welded edges 20, it can be electrically insulated from the lamellae 2a ⁇ .
  • This can also be designed so that the side plate is inserted into the slats as shown in the right half of the picture. Again, the fins 2a ⁇ have the bulge 2a ⁇ to be able to attach to the slats.
  • the side plate can be magnetically conductive and bear against the yoke without insulation, which supports the magnetic flux. At the ends, this side plate 19 is also connected to the bearing plates 8.
  • Fig. 4 shows a section through a double actuator, as indicated above.
  • a laminated anchor 25 is shown in the upper half of the figure. This is connected to an anchor tube 21 shown in section, in which a torsion bar 22 extends.
  • the bearing 23 and 23a of the anchor tube in the bearing plate are also shown. This bearing 23 and 23a can be realized by plain or roller bearings.
  • the torsion bar 22 is connected to the anchor tube 21 and on the right side to a torsion bar receptacle 24 fixed to the housing, which in turn is connected to a lever 24a, which acts as an extension, welded to the bearing plate 25 r approximately at the center thereof at S. is.
  • This welding enables precise adjustment of the torsion bar force by bringing the armature into the closed position of the valve shown in FIG. 2 and then turning the torsion bar lever 24a until the corresponding force is reached. The welding then takes place.
  • a hydraulic lash adjuster directly to the armature 25 and the pressure oil required for it, e.g. B. via a valve actuation lamella 25a of the armature 25 to the clearance compensation element (not shown) arranged between the armature and the valve.
  • an oil connection 26 is necessary, which preferably connects the engine lubricating oil to a pressure line of a pump. pump is connected.
  • a sealing element 26a is arranged behind this bearing.
  • the pressure oil reaches the channel 27 in the valve actuation lamella 25a via the anchor tube 21.
  • the valve actuation plate 25a is arranged off-center.
  • the corresponding lamella of the neighboring actuator (under half of the figure) is labeled 25a ⁇ .
  • the distance between the fins 25a and 25a corresponds to the valve distance. The advantage of this arrangement can be seen from this, since it can be adapted to the valve distances in a wide range.
  • the valve actuation plates 25 a and 25 a are embedded in the armature package.
  • the bearing bushes 28 are welded or soldered into the bearing plates 25 L and 25 r . This is done in a corresponding device for precise alignment.
  • the actuator is connected to the cylinder head 35 with screws 29.
  • the bearing plates are relatively thin (about 1.5 to 2mm thick).
  • the end slats are approx. 3mm thick, the other slats approx. 0.3mm.
  • FIG. 4 shows the corresponding elements of the adjacent actuator.
  • part of the anchor package 25 is cut away on the left and the plate package 30 of a yoke with a thicker end plate 31 is visible.
  • the outer yoke reinforcement is effected by the side plate 32, which is welded to the bearing plate at S 3 .
  • the side plate 33 serves to reinforce the inner yoke. This corresponds to the structure shown in FIGS. 1 and 3.
  • the inner reinforcement projects through the yoke side plate 33 the bearing plate 25 and is welded to it at S 2 .
  • Fig. 5 shows a side view of the bearing plate 25 L. 4 shows the view in the y direction shown.
  • the yoke side plates 32 and 33 are shown in dashed lines and dimensioned somewhat differently compared to FIGS. 1 and 2, and the implementation of the side plate 33 through a recess in the bearing plate 25 L with the corresponding welding points S 2 can also be seen.
  • the torsion bar receptacle 24 and the lever 24a can also be seen here.
  • the elements of the actuator adjacent to the parts 24 and 24a are arranged diagonally opposite one another on the bearing plate 25 r . This means that the same parts can be used.
  • the fastening screw 29 can also be seen.
  • the coils 34 protrude through corresponding recesses in the bearing plates 25 L and 25 r .
  • the connections 34a are thus easily accessible for contacting the connecting cable.
  • the yoke plate pack can also be screwed together with any additional welding or gluing or other connection options.
  • the screw connections 37 and 37a shown on the left in FIG. 5 have the advantage of a simple adjustment. It can e.g. B. only the upper magnet can be screwed and the lower one welded.
  • the thicker yoke plates 31 z. B. for the two magnets below are connected in a kind of bridge to allow easier assembly and to achieve further stiffening of the bearing plates.
  • the actuator of FIGS. 4 and 5 can also be embedded in the cylinder head 35 for better heat dissipation, as shown in FIG. 5 below, the installation Tolerances of the air gap can be compensated for by thermally conductive fillers. It is also conceivable to improve the heat dissipation for the upper magnets by using a heat conducting plate 36 which dissipates the heat from the top of the magnets to the cylinder head.
  • the bearing plates 25L ⁇ and 25 r have to be non-magnetic or only weakly magnetic in order to produce only a small shunt, at least in the area of the armature.
  • the material can be magnetic in the adjacent areas.
  • the non-magnetic material e.g. B. V2A costs a multiple of the magnetically conductive material. It is therefore conceivable to carry out a separation at 25 LT in such a way that the middle part 25 LM is non-magnetic and the adjacent part above 25 L 0 and correspondingly below it is magnetic.
  • the actuator In order to generate good heat dissipation, the actuator should be mounted or adjusted flush with the bearing plates 25 L and 25 r .
  • 5 and 6 show the fastening of the actuator by means of the fastening screw 29 on the cylinder head 35.
  • a shaft screw 29a can be used according to FIG. 6 with a hexagon at the upper end. This version has assembly advantages in terms of accessibility when mounting on the cylinder head.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

L'invention concerne un électroaimant dont la culasse est constituée de lamelles. Le paquet de lamelles composé des lamelles est disposé entre deux plaques support, et les plaques terminales sont reliées par deux plaques latérales de culasse. Le logement de l'induit est par ailleurs disposé dans les plaques support.
PCT/EP2001/000565 2000-01-22 2001-01-18 Electroaimant WO2001054146A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE50103445T DE50103445D1 (de) 2000-01-22 2001-01-18 Elektromagnet
EP01942784A EP1163687B1 (fr) 2000-01-22 2001-01-18 Electroaimant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10002628.1 2000-01-22
DE10002628A DE10002628A1 (de) 2000-01-22 2000-01-22 Elektromagnet

Publications (1)

Publication Number Publication Date
WO2001054146A1 true WO2001054146A1 (fr) 2001-07-26

Family

ID=7628349

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/000565 WO2001054146A1 (fr) 2000-01-22 2001-01-18 Electroaimant

Country Status (3)

Country Link
EP (1) EP1163687B1 (fr)
DE (2) DE10002628A1 (fr)
WO (1) WO2001054146A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2133538A1 (fr) * 2008-06-10 2009-12-16 Arno Hofmann Vanne à papillon dotée d'un ressort de torsion

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10134708A1 (de) * 2001-07-21 2003-02-06 Heinz Leiber Elektromagnet
FR2834119B1 (fr) * 2001-08-30 2004-05-21 Moving Magnet Tech Mmt Actionneur electromagnetique a deux positions stables de fin de course, notamment pour la commande de vannes de conduits d'admission d'air pour moteurs a combustion interne
DE10218471A1 (de) * 2002-04-25 2003-11-06 Mann & Hummel Filter Magnetisch steuerbares Stellglied
DE10220788A1 (de) * 2002-05-10 2003-11-20 Daimler Chrysler Ag Elektromagnetischer Aktuator mit einem Schwenkanker

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE946169C (de) * 1942-06-19 1956-07-26 Aeg Geblaetterter Magnetkern
EP0251321A1 (fr) * 1986-07-04 1988-01-07 Hitachi, Ltd. Noyau de fer pour électro-aimant et procédé pour fabriquer celui-ci
WO1998042958A1 (fr) * 1997-03-24 1998-10-01 Lsp Innovative Automotive Systems Gmbh Dispositif de commande electromagnetique
DE19824537A1 (de) * 1998-06-03 1999-12-09 Lsp Innovative Automotive Sys Elektromagnetische Stelleinrichtung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1250552B (fr) * 1967-09-21
DE967478C (de) * 1942-11-29 1957-11-14 Westfaelische Metall Ind G M B Vorrichtung zum Paketieren von lamellierten Elektromagneten fuer elektromagnetische Signalhoerner
US6049264A (en) * 1997-12-09 2000-04-11 Siemens Automotive Corporation Electromagnetic actuator with composite core assembly
US6118366A (en) * 1997-12-09 2000-09-12 Siemens Automotive Corporation Electromagnetic actuator with split housing assembly
DE19807181A1 (de) * 1998-02-20 1999-08-26 Bayerische Motoren Werke Ag Elektromagnetische Schwinganker-Vorrichtung, insbesondere als Aktuator für ein Gaswechselventil einer Kraft- oder Arbeitsmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE946169C (de) * 1942-06-19 1956-07-26 Aeg Geblaetterter Magnetkern
EP0251321A1 (fr) * 1986-07-04 1988-01-07 Hitachi, Ltd. Noyau de fer pour électro-aimant et procédé pour fabriquer celui-ci
WO1998042958A1 (fr) * 1997-03-24 1998-10-01 Lsp Innovative Automotive Systems Gmbh Dispositif de commande electromagnetique
DE19824537A1 (de) * 1998-06-03 1999-12-09 Lsp Innovative Automotive Sys Elektromagnetische Stelleinrichtung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2133538A1 (fr) * 2008-06-10 2009-12-16 Arno Hofmann Vanne à papillon dotée d'un ressort de torsion
WO2009149867A1 (fr) * 2008-06-10 2009-12-17 Arno Hofmann Soupape rotative de transport de gaz avec ressort de torsion

Also Published As

Publication number Publication date
DE50103445D1 (de) 2004-10-07
EP1163687A1 (fr) 2001-12-19
DE10002628A1 (de) 2001-07-26
EP1163687B1 (fr) 2004-09-01

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