WO2002052586A1 - Elektromagnet - Google Patents
Elektromagnet Download PDFInfo
- Publication number
- WO2002052586A1 WO2002052586A1 PCT/DE2001/004605 DE0104605W WO02052586A1 WO 2002052586 A1 WO2002052586 A1 WO 2002052586A1 DE 0104605 W DE0104605 W DE 0104605W WO 02052586 A1 WO02052586 A1 WO 02052586A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- winding
- post
- posts
- electromagnet
- electromagnet according
- Prior art date
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
Definitions
- the invention relates to an electromagnet according to the preamble of claim 1.
- actuators designed as electromagnetically operated pressure control valves are used for transmission control, in which an electromagnet generates a magnetic force in order to carry out a hydraulic control function.
- the relationship between the excitation current supplied to the solenoid coil and the modulated control pressure is described by the characteristic of the pressure control valve.
- the characteristic curve runs continuously, is specified and forms the basis for application in the motor vehicle.
- An essential characteristic of the characteristic is its slope. This slope is determined by the properties of the electromagnet. Fluctuations in the manufacturing tolerances of the individual parts of the electromagnet affect the magnetic flux and thus the Magnetic force, so that significant fluctuations in the slope of the characteristic curve can occur in the characteristics of the same actuators of a production series.
- the electromagnet according to the invention with the features of claim 1 has the advantage that only minor constructive changes to the magnet coil are provided to create the adjustment possibility for the subsequent influencing of the magnetic force inherent in the finished electromagnet, and no major structural interventions are made in the iron circuit of the electromagnet have to.
- the winding packages lying between the posts can be made with different numbers of turns, by melting the corresponding posts in such a way that they weld to the winding wire, the magnetic force of the electromagnet can be reduced in a very finely graded manner.
- the excitation winding is designed with a number of turns that is greater than the number of turns calculated for a design based on the design of the electromagnet Magnetic force is required. Then the required magnetic force is set on the finished electromagnet by targeted welding of the corresponding posts to the excitation winding. The welding is carried out using a laser beam. The posts melt and give a sufficiently large melting volume for secure welding.
- one of the posts, and preferably the post wrapped around the end of the winding wire is welded to the end of the winding wire during the manufacture of the electromagnet, while at least one further of the other posts is only melted after the electromagnet has been completed for the purpose of adjusting the magnetic force , This reduces the adjustment time, since one post has to be melted less for adjustment purposes.
- the electrical connection between the posts is made by a web made of electrically conductive material, whereby the posts are combined to form a one-piece post strip.
- a post strip can be fastened in a simple manner to the coil body of the magnet coil, for example in that the web of the post strip is also injected during the manufacturing process for the coil body.
- the web is injected in a spool-like configuration of the coil body receiving the excitation winding into one of the flanges of the coil body delimiting the excitation winding at the end so that the posts protrude radially on the flange circumference.
- the windings wrapping around the posts are in the uppermost layer in the end region of the excitation winding.
- an opening which is congruent with the post strip is present in the housing according to an advantageous embodiment of the invention.
- This opening in the housing enables access to the radially aligned posts on the flange of the coil body.
- the housing opening is sealed with a casting compound, preferably epoxy resin.
- Fig. 1 shows a longitudinal section of an electromagnetically operated pressure control valve for transmission control of automatic transmissions in
- Motor vehicles 2 shows a detail of a perspective view of a coil body of the magnet coil of the electromagnet in FIG. 1,
- FIG. 3 is a perspective view of an enlarged detail of a post strip on the coil former according to FIG. 2,
- FIG. 4 shows a schematic illustration of a section of the excitation winding of the magnet coil of the electromagnet in FIG. 1 with a pin strip according to FIG. 2,
- FIG. 5 shows a detail of a perspective view of the pressure regulating valve in FIG. 1.
- the pressure control valve shown in longitudinal section in FIG. 1 has an electromagnet 10 and a proportional valve designed as a 3/3-way valve 11, which is fixed on the end face of the electromagnet 10.
- the valve connections are labeled P, A and T. They are controlled by a control slide 12 designed as a double piston slide, which is actuated by the electromagnet 10.
- the electromagnet 10 has a magnet coil 13, a magnet core 14, a movable armature 16 opposite the magnet core 14 while leaving an air gap 15 and a magnet armature 13 and armature 16 enclosing it Housing 17 made of ferromagnetic material, which together with the magnetic core 14 forms the iron circuit of the electromagnet 10.
- the electromagnet 10 sits axially immovably on a push rod 121 of the control slide 12, the control slide 12 being guided axially displaceably on the one hand with one of the control pistons 122 in a central bore 19 in the valve body 18 and on the other hand with the slide rod 121 in a central bore 20 of the magnetic core 14 ,
- a compression spring 21 held on the slide rod 121 is supported on the one hand on the magnetic core 14 and on the other hand on
- Armature 16 and forms a return spring for the armature 16, the spring force of which is opposite to the magnetic force generated by the electromagnet 10.
- the armature 16 is applied by the compression spring 21 to a stop in the housing 17, which in the
- Embodiment of FIG. 1 is formed by the valve body 18 of the 3/3-way valve 11 fixed by flanging on the housing 17.
- the magnetic coil 13 consists of a coil body 22 and an excitation winding 23 received by the coil body 22, which consists of an insulated winding wire 24, e.g.
- the spool body 22 which is designed in the manner of a thread spool and is injection-molded from plastic, has a cylindrical middle part 221, on which the excitation winding 23 is wound, and two flanges 222 arranged at the end of the middle part 221, which cover the end faces of the excitation winding 23.
- the Coil body 22 is placed on the magnetic core 14 and enclosed by the housing 17.
- the entire magnetic coil 13 can be extrusion-coated with a plastic layer 25.
- the winding start and the winding end of the field winding 23 are provided with connection flags via which the field winding 23 is energized.
- These adjustment means comprise a plurality of freely projecting posts 26 made of electrically conductive material, which are arranged on the magnet coil 13 and can be melted by means of laser welding and thereby deliver a sufficiently large melting volume for a weld. As illustrated in the schematic illustration of the field winding 23 in FIG. 4, the insulated winding wire 24 is guided around one of the posts 26 in selected turns of the field winding 23.
- the electrical connection of the posts 26 to one another is established by a web 27, on which the posts 26 are integrally formed.
- the web 27 forms with the posts 26 a post strip 28 which is curved in an arc and is fastened to the bobbin 22.
- the selected turns of the excitation winding 23, in which the winding wire 24 is guided around each of the posts 26, lie in the uppermost winding position in the end region of the excitation winding 23, the winding end with the last post 26 in the post strip 28, in FIG. 4 Designated 261, can be welded during the manufacture of the magnetic coil 13.
- the welding of the post 261 takes place by laser action on the post 261, whereby the post 261 melts and provides a sufficiently large melting volume so that the winding wire 24 is reliably conductively connected to the post 261 through the winding wire insulation.
- the excitation winding 23 can also be carried out in such a way that a plurality of turns or turns packages with different numbers of turns are present between the posts 26.
- the electromagnet 10 for designed a required magnetic force
- the excitation winding 23 of the magnet coil 13 is designed with a somewhat larger number of turns than is theoretically required in order to achieve the required magnetic force with a corresponding energization of the magnet coil 13.
- an opening 29 congruent with the post strip 28 is present in the housing 17 through which, as shown in FIG through all the posts 26 are accessible for laser welding.
- opening 29 is sealed with a potting compound, for example with an epoxy resin.
- the invention is not limited to the exemplary embodiment of the electromagnet 10 described. It is therefore not necessary that the turns in which the winding wire 24 wraps around the posts 26 of the post strip 28 must be arranged in the end region of the excitation winding 23. Rather, the post strip 28 can be in any area of the field winding 23, always at least two
- Posts 26 must be treated by laser welding in order to connect them electrically conductively to one turn of the excitation winding 23.
- the field winding 23 is then always reduced by the number of turns between the two posts 26, so that the magnetic force is correspondingly reduced by the reduced number of turns of the field winding 23.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnets (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01994598A EP1346379A1 (de) | 2000-12-22 | 2001-12-06 | Elektromagnet |
JP2002553196A JP2004516674A (ja) | 2000-12-22 | 2001-12-06 | 電磁石 |
US10/182,943 US6724287B2 (en) | 2000-12-22 | 2001-12-12 | Electromagnet |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10064488.0 | 2000-12-22 | ||
DE10064488A DE10064488A1 (de) | 2000-12-22 | 2000-12-22 | Elektromagnet |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002052586A1 true WO2002052586A1 (de) | 2002-07-04 |
Family
ID=7668602
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2001/004605 WO2002052586A1 (de) | 2000-12-22 | 2001-12-06 | Elektromagnet |
Country Status (6)
Country | Link |
---|---|
US (1) | US6724287B2 (de) |
EP (1) | EP1346379A1 (de) |
JP (1) | JP2004516674A (de) |
KR (1) | KR20030007420A (de) |
DE (1) | DE10064488A1 (de) |
WO (1) | WO2002052586A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100666305B1 (ko) * | 2005-05-17 | 2007-01-11 | 우성전기공업 주식회사 | 전자석 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4418720A (en) * | 1981-03-06 | 1983-12-06 | Double A Products Company | Solenoid operated directional valves having modular construction |
US4862123A (en) * | 1988-05-05 | 1989-08-29 | General Motors Corporation | Solenoid for electric starters |
EP0464370A1 (de) * | 1990-07-06 | 1992-01-08 | Robert Bosch Gmbh | Stelleinrichtung |
JPH07335432A (ja) * | 1994-06-15 | 1995-12-22 | Tohoku Oki Denki Kk | 電磁コイル及びこれを用いたソレノイド |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2006888A1 (de) * | 1968-04-25 | 1970-01-02 | Omron Tateisi Electronics Co | |
US3663914A (en) * | 1971-06-14 | 1972-05-16 | Western Electric Co | Bobbin wound coil assembly and electrical terminals therefor |
NL7203795A (de) * | 1972-03-22 | 1973-09-25 | ||
DE7325373U (de) * | 1973-07-10 | 1973-12-06 | H Stribel Kg | Geraet zur lampenueberwachung in kraftfahrzeugen |
US4523169A (en) * | 1983-07-11 | 1985-06-11 | General Electric Company | Dry type transformer having improved ducting |
US4617543A (en) * | 1984-01-26 | 1986-10-14 | Tdk Corporation | Coil bobbin |
JPS62161058A (ja) * | 1986-01-10 | 1987-07-17 | Copyer Co Ltd | モ−タの回転速度検出方法 |
JPH01163306U (de) * | 1988-05-07 | 1989-11-14 | ||
JP2724370B2 (ja) * | 1989-03-20 | 1998-03-09 | オムロン株式会社 | 電磁継電器 |
JPH05190331A (ja) * | 1992-01-16 | 1993-07-30 | Elmec Corp | 電磁遅延線用インダクタンス素子およびその製造方法 |
DE19541446B4 (de) * | 1995-11-07 | 2005-08-25 | Marlene Weiner | Spulenkörper mit zwei Wickelkammern |
US6326877B1 (en) * | 1999-06-16 | 2001-12-04 | Square D Company | Transformer coil support structure |
US6472970B1 (en) * | 2001-06-08 | 2002-10-29 | Trw Inc. | Apparatus for attaching an electric coil to a printed circuit board |
JP3454801B2 (ja) * | 2001-08-08 | 2003-10-06 | 株式会社タムラ製作所 | コイルボビン |
-
2000
- 2000-12-22 DE DE10064488A patent/DE10064488A1/de not_active Withdrawn
-
2001
- 2001-12-06 KR KR1020027010409A patent/KR20030007420A/ko not_active Application Discontinuation
- 2001-12-06 EP EP01994598A patent/EP1346379A1/de not_active Withdrawn
- 2001-12-06 JP JP2002553196A patent/JP2004516674A/ja not_active Withdrawn
- 2001-12-06 WO PCT/DE2001/004605 patent/WO2002052586A1/de not_active Application Discontinuation
- 2001-12-12 US US10/182,943 patent/US6724287B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4418720A (en) * | 1981-03-06 | 1983-12-06 | Double A Products Company | Solenoid operated directional valves having modular construction |
US4862123A (en) * | 1988-05-05 | 1989-08-29 | General Motors Corporation | Solenoid for electric starters |
EP0464370A1 (de) * | 1990-07-06 | 1992-01-08 | Robert Bosch Gmbh | Stelleinrichtung |
JPH07335432A (ja) * | 1994-06-15 | 1995-12-22 | Tohoku Oki Denki Kk | 電磁コイル及びこれを用いたソレノイド |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 04 30 April 1996 (1996-04-30) * |
Also Published As
Publication number | Publication date |
---|---|
JP2004516674A (ja) | 2004-06-03 |
DE10064488A1 (de) | 2002-06-27 |
KR20030007420A (ko) | 2003-01-23 |
US6724287B2 (en) | 2004-04-20 |
EP1346379A1 (de) | 2003-09-24 |
US20030011453A1 (en) | 2003-01-16 |
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