EP1163686A1 - Elektromagnet - Google Patents
ElektromagnetInfo
- Publication number
- EP1163686A1 EP1163686A1 EP01909656A EP01909656A EP1163686A1 EP 1163686 A1 EP1163686 A1 EP 1163686A1 EP 01909656 A EP01909656 A EP 01909656A EP 01909656 A EP01909656 A EP 01909656A EP 1163686 A1 EP1163686 A1 EP 1163686A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- actuator
- yoke
- plates
- side plates
- yoke side
- 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
Links
- 238000003466 welding Methods 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000005538 encapsulation Methods 0.000 claims description 2
- 239000002985 plastic film Substances 0.000 claims description 2
- 229920006255 plastic film Polymers 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000005476 soldering Methods 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims 1
- 238000007765 extrusion coating Methods 0.000 claims 1
- 239000004922 lacquer Substances 0.000 claims 1
- 239000012811 non-conductive material Substances 0.000 claims 1
- 241000446313 Lamella Species 0.000 abstract description 5
- 238000004873 anchoring Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
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.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electromagnets (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10002295 | 2000-01-20 | ||
| DE10002295A DE10002295A1 (de) | 2000-01-20 | 2000-01-20 | Elektromagnet |
| DE10039869A DE10039869A1 (de) | 2000-08-16 | 2000-08-16 | Elektromagnet |
| DE10039869 | 2000-08-16 | ||
| PCT/EP2001/000569 WO2001054147A1 (de) | 2000-01-20 | 2001-01-18 | Elektromagnet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1163686A1 true EP1163686A1 (de) | 2001-12-19 |
| EP1163686B1 EP1163686B1 (de) | 2004-07-28 |
Family
ID=26003940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01909656A Expired - Lifetime EP1163686B1 (de) | 2000-01-20 | 2001-01-18 | Elektromagnet |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1163686B1 (de) |
| DE (1) | DE50102969D1 (de) |
| WO (1) | WO2001054147A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008202427A (ja) * | 2007-02-16 | 2008-09-04 | Toyota Motor Corp | 電磁駆動弁 |
| EP3133615B1 (de) * | 2015-08-20 | 2018-12-26 | Siemens Aktiengesellschaft | Elektrische wicklungsanordnung |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE946169C (de) * | 1942-06-19 | 1956-07-26 | Aeg | Geblaetterter Magnetkern |
| JPS6313306A (ja) * | 1986-07-04 | 1988-01-20 | Hitachi Ltd | 電磁石鉄心,及びその製作方法 |
| WO1998042958A1 (de) * | 1997-03-24 | 1998-10-01 | Lsp Innovative Automotive Systems Gmbh | Elektromagnetische stellvorrichtung |
| DE19824537A1 (de) * | 1998-06-03 | 1999-12-09 | Lsp Innovative Automotive Sys | Elektromagnetische Stelleinrichtung |
-
2001
- 2001-01-18 WO PCT/EP2001/000569 patent/WO2001054147A1/de not_active Ceased
- 2001-01-18 DE DE50102969T patent/DE50102969D1/de not_active Expired - Lifetime
- 2001-01-18 EP EP01909656A patent/EP1163686B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0154147A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50102969D1 (de) | 2004-09-02 |
| EP1163686B1 (de) | 2004-07-28 |
| WO2001054147A1 (de) | 2001-07-26 |
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