WO2001054147A1 - Electro-aimant - Google Patents

Electro-aimant

Info

Publication number
WO2001054147A1
WO2001054147A1 PCT/EP2001/000569 EP0100569W WO0154147A1 WO 2001054147 A1 WO2001054147 A1 WO 2001054147A1 EP 0100569 W EP0100569 W EP 0100569W WO 0154147 A1 WO0154147 A1 WO 0154147A1
Authority
WO
WIPO (PCT)
Prior art keywords
actuator
yoke
plates
side plates
yoke side
Prior art date
Application number
PCT/EP2001/000569
Other languages
German (de)
English (en)
Inventor
Heinz Leiber
Thomas Leiber
Dirk Dünkel
Frank KÄHNY
Ralf Hecker
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
Priority claimed from DE10002295A external-priority patent/DE10002295A1/de
Priority claimed from DE10039869A external-priority patent/DE10039869A1/de
Application filed by Tyco Electronics Amp Gmbh filed Critical Tyco Electronics Amp Gmbh
Priority to EP01909656A priority Critical patent/EP1163686B1/fr
Priority to DE50102969T priority patent/DE50102969D1/de
Publication of WO2001054147A1 publication Critical patent/WO2001054147A1/fr

Links

Classifications

    • 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
    • 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
    • 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
    • H01F7/14—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
    • 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 interlocked by means of beads in the metal sheets, by means of so-called punch packaging. This is the common technique, e.g. B. for ignition transformers. Most of these yokes are also encapsulated with plastic. This encapsulation serves to hold the laminated core together and to isolate it. 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 making the yoke formation of an electromagnet more resistant to deflection in order to avoid the disadvantages mentioned above.
  • the subclaims 2 to 12 contain configurations that further support the task solution.
  • the invention also allows the yoke to be adjusted relative to the anchor in order to compensate for the manufacturing tolerances.
  • FIG. 1 shows the structure of an actuator for driving a valve of an internal combustion engine, in the electromagnet of which the invention is used;
  • 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 rotary tube, which is rigidly clamped at one end and is connected at its other end to the anchor tube 4a.
  • the torsion bar 6 generates the two spring forces acting on the lever 4 in this embodiment.
  • 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 shaft of the valve, not shown.
  • Fig. 2 shows that the armature 7 and the yoke 2a is composed of lamellae 7a and 2a ⁇ and 2a , ⁇ made of magnetic material.
  • the slats 7 and 2a ⁇ are z. B. 0.3mm thick.
  • the preferably outer sides of each magnet 2 and 3 carry rigid yoke side plates 8 and 9, which are welded along the lines 10 to the plates 2a over the entire yoke depth.
  • the end lamellae 2a ⁇ of the yokes 2a and 3a are thicker (for example 3mm) and, as is also shown in FIGS. 3a and 3b (section X - X), also welded to the yoke side plates 8.
  • the magnets 2 and 3 and the armature 7 can be adjusted relative to one another, the lamellae 2a ⁇ and 2a ⁇ forming an assembly unit with the yoke side plates 8 and 9. Together with the bearing plates 12, they form a complete actuator.
  • Fig. 2 is still to point to a slot 13 in the yoke side plate, with the help of eddy currents are reduced.
  • FIGS. 3a and 3b each show one of the welded connections 8 ⁇ between the yoke end plates 2a ⁇ and the yoke side plates 8. This creates a cage between the two yoke side plates and the end lamellae, the yoke side plates being braced against the end lamellae to absorb the large magnetic forces of the lamellae.
  • 3a is also a
  • the parts 8 and 12 are only indirectly connected to one another: the bearing plate 12 and the yoke side plate 8 are each connected to the end plate 2a ⁇ .
  • FIG. 4 again shows the construction of the electromagnet of FIG. 1 with the laminated yoke 2a, with the thin lamellae 2a and the thicker end lamellae 2a , 2, the winding 2b and the bearing plate 12. The left one is to reduce eddy currents Side plate 8a bent at its upper end 8a ⁇ and is arranged outside the winding 2b. As a result, a high degree of bending rigidity is achieved.
  • the thick end lamella 2a used represent a stiffening of the package; thin plates would bulge due to the spring effect of the plate pack and cannot absorb the high magnetic forces transmitted to the yoke side plate.
  • the yoke side plates 8 and 8a are preferably manufactured with a low length tolerance (eg ⁇ 20 [m). This makes it possible to compress the plate pack 2a without machining the end faces of the end plates 2a , ⁇ and to weld it to the bearing plate, the welding preferably being carried out over a large length of the contact surface.
  • Insulation 15 is preferably introduced between the side plates 8 and the slats 2a, as shown in FIG. 5. This can also consist of a defined air gap.
  • Fig. 6 shows a case in which the yoke side plates 8 and 8a are butt welded to the bearing plate 12 (welds 12 ⁇ , ).
  • a weld 12 ⁇ between the thick end lamella 2a ⁇ der and the bearing plate 12 can be carried out.
  • FIG. 7 shows the front view of a combination of two actuators 40 and 41, which are located behind a common bearing plate 42.
  • the actuator 41 corresponds to the position of the actuator 1 in FIG. 1.
  • the actuator 40 lies opposite the actuator 41; it is rotated 180 ° against it, so that in Fig. 7 on the left at 41a the bearing of the anchor tube and its connection to the rotary tube 41b is shown in Fig. 2 and on the right at 40a the clamping of the rotary tube 40b in the bearing plate 42.
  • the rear and front bearing plates 42 are fastened on an actuator carrier 43.
  • the valve actuations 44 corresponding to FIG. 4b are spatially offset in accordance with the valve spacing in the cylinder head.
  • FIG. 8 shows an exemplary embodiment in which the yoke side plates are expanded to embed the plate pack in a casing 48, which can be produced by pouring or overmolding with metal or plastic. Die-cast aluminum is preferred.
  • the sheath 48 with the plate pack 49 is shown on the left half of the picture.
  • the coil 50 is mounted in the yoke.
  • part of the armature 51 is shown at the end of the yoke legs.
  • This sleeve 48 is clamped here by means of screws 52 and 52a between the bearing plates 53 and 53a (see FIG. 9).
  • the clamping forces of the screws mainly act only on the sleeve 48.
  • the disk pack has cams 49 ⁇ for anchoring.
  • FIG. 9 On the right half of the picture, the shell 54 is shown without screwing.
  • the different kind of cohesion with the bearing plates 53 and 53a is shown in FIG. 9 in two sections AA and BB by the arrangement of FIG. 8.
  • a thicker end plate 55 is provided, similar to the end plate 2a ⁇ of FIG. 5.
  • This has grooves or recesses 56 for anchoring the casing 54.
  • These end plates are connected to the bearing plate 53 connected by welds 57.
  • This anchoring with the end lamellae 55 has the advantage of the possibility of a cheap fastening 58 of the bearing plates 53 and 53a to the cylinder head 59.
  • the through bolts are on the left
  • the coil 50 protrudes through the bearing plate.
  • the sleeves 48 and 54 can also with the
  • FIG. 10 shows an exemplary embodiment with yoke side plates 61 and 62.
  • the plate pack is fastened, as in FIG. 9, to the yoke side plates 61 and 62 by means of through-bolts 64 partially welded together (weld S M ). These are welded to the plate pack at the welding points Si to S 4 . Have the screws
  • the fine adjustment of the magnetic yoke to the anchor reduce the deflection of the yokes and thus support the yoke side plates 61 and 62.
  • the yoke side plates 61 and 62 are welded to the bearing plates 53 and 53a, respectively.
  • the coil with bobbin 50a is shown.
  • the conception of the plate pack with surrounding yoke side plates or covers is suitable for a bodyless injected or cast coil, as shown in FIG. 10.
  • the yoke leg can be serrated. point.
  • a sealing shell 63 is arranged between the yokes, or between the yokes and the yoke side plate. B. is shrunk so that there is no air gap.

Abstract

L'invention concerne un électro-aimant qui comporte une culasse lamellée pourvue d'un enroulement électrique et d'un induit coopérant avec celui-ci. La culasse comporte, au moins sur les côtés extérieurs du paquet de lamelles, des plaquettes latérales de culasse résistant à la flexion qui sont soudées avec au moins une partie des lamelles.
PCT/EP2001/000569 2000-01-20 2001-01-18 Electro-aimant WO2001054147A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP01909656A EP1163686B1 (fr) 2000-01-20 2001-01-18 Electro-aimant
DE50102969T DE50102969D1 (de) 2000-01-20 2001-01-18 Elektromagnet

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10002295A DE10002295A1 (de) 2000-01-20 2000-01-20 Elektromagnet
DE10002295.2 2000-01-20
DE10039869A DE10039869A1 (de) 2000-08-16 2000-08-16 Elektromagnet
DE10039869.3 2000-08-16

Publications (1)

Publication Number Publication Date
WO2001054147A1 true WO2001054147A1 (fr) 2001-07-26

Family

ID=26003940

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/000569 WO2001054147A1 (fr) 2000-01-20 2001-01-18 Electro-aimant

Country Status (3)

Country Link
EP (1) EP1163686B1 (fr)
DE (1) DE50102969D1 (fr)
WO (1) WO2001054147A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008099272A1 (fr) * 2007-02-16 2008-08-21 Toyota Jidosha Kabushiki Kaisha Soupape commandée électromagnétiquement
EP3133615A1 (fr) * 2015-08-20 2017-02-22 Siemens Aktiengesellschaft Systeme de bobine electrique

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

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
WO2008099272A1 (fr) * 2007-02-16 2008-08-21 Toyota Jidosha Kabushiki Kaisha Soupape commandée électromagnétiquement
EP3133615A1 (fr) * 2015-08-20 2017-02-22 Siemens Aktiengesellschaft Systeme de bobine electrique

Also Published As

Publication number Publication date
EP1163686B1 (fr) 2004-07-28
DE50102969D1 (de) 2004-09-02
EP1163686A1 (fr) 2001-12-19

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