EP0990246B1 - Elektromagnetsystem und verfahren zum herstellen eines solchen systems - Google Patents
Elektromagnetsystem und verfahren zum herstellen eines solchen systems Download PDFInfo
- Publication number
- EP0990246B1 EP0990246B1 EP98934755A EP98934755A EP0990246B1 EP 0990246 B1 EP0990246 B1 EP 0990246B1 EP 98934755 A EP98934755 A EP 98934755A EP 98934755 A EP98934755 A EP 98934755A EP 0990246 B1 EP0990246 B1 EP 0990246B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- core
- thread
- yoke
- round hole
- magnet system
- 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.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000000034 method Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 abstract description 7
- 238000010168 coupling process Methods 0.000 abstract description 7
- 238000005859 coupling reaction Methods 0.000 abstract description 7
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000010949 copper Substances 0.000 description 2
- 239000000834 fixative Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 241000237942 Conidae Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000012886 Vertigo Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
-
- 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
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
- H01H2050/367—Methods for joining separate core and L-shaped yoke
Definitions
- the invention relates to an electromagnetic system with a yoke and a core that has a mounting end in a round hole a yoke section is attached, the core one, preferably cylindrical, and at its fastening end has a conical section, the latter with a diameter exceeding the diameter of the round hole Core diameter penetrates the material of the yoke. Moreover the invention relates to a method for joining core and Yoke with such a system.
- an electromagnetic system is the beginning known type, in which the core with its cylindrical Shaft from the outside through a round hole of the yoke leg and with its end cone section jammed in a hole in the yoke leg becomes.
- the core is subjected to impulsive impacts.
- the core adjustment is only one way there, namely in the direction of the core insert.
- the aim of the invention is to provide an electromagnetic system to improve the type mentioned so that a good and reliable Connection and magnetic coupling of core and Yoke is easily achieved using this connection exactly - both forward and backward - adjustable is.
- this goal is achieved in that a thread is formed in the conical section of the core, which is also conical in the threadless wall extended recess of the yoke screwed in a self-deforming manner is.
- the cone section is therefore of the core and the conical inner wall of the round hole already matched to each other in the yoke section.
- the final Fastening into each other and fine positioning are done however, by turning over that on the cone section of the core trained thread, which when screwing into the smooth inner surface of the round hole is buried.
- This one Thread on the core is relatively easy to make, because a vote with a suitably pre-made complementary nut thread in the yoke is not required. Due to the material displacement when screwing in the thread core there are no additional measures in the yoke section both an excellent tight fit and a good one magnetic coupling between the two parts.
- a special one good coupling results when the thread on the Core is formed as a flat thread, that is, if the individual turns of the thread groove (or the thread grooves at a multiple thread) in relation to the groove depth have a large distance, so that a flattened thread web arises, which is trapezoidal in cross-section or one-sided steeper flank is approximately sawtooth-shaped.
- the cone section of the core and the conical inner wall of the Round holes in the yoke can, for example, be at an angle the core axis between 0.5 ° and 5 °.
- an angle similar to tapered sleeves and Taper shanks for self-locking tool attachment is the angle of the cone shell with respect to the axis between 1 ° and 2 °, preferably at approximately 1.5 ° (1 ° 30 ') or between 1 ° 25 'and 1 ° 30' for the so-called Morse cone.
- this small pitch angle it would also be conceivable to the shaft of the Core with the mounting section slightly conical throughout (with a gradient of about 1 °).
- the thread on the tapered section can be made if the thread groove (or thread grooves) has a constant inner core diameter has (or have). That means, that the thread at the narrowest point of the cone section is not or little buried while it is widened Cut deeper and deeper at the end.
- a special one simple manufacture and processing result in the design as a rolling thread.
- both the yoke and the core are annealed.
- the soft annealed yoke also has the advantage that it is slightly expanded or deformed when screwing in the thread core, so that no excessively high torques are required are.
- With the core it is advantageous if it is rolled up of the thread is annealed, since then the thread rolling Throw created on the thread flanks by material displacement undergoes a certain hardening and thus turns when screwed in of the core lighter in the annealed, threadless Digs the material of the round hole.
- a surface coating made of copper or Copper-graphite facilitate screwing in and prevent seizure. This can be done almost without additional effort, since a coating, for example with Cu, anyway as corrosion protection is desired.
- the thread runs partly only in the coating, which is a kind of lubrication serves.
- the double relay shown in Figure 1 has two magnet systems each with a yoke 1 that has a longitudinal section 11 and has a cross section 12.
- a core 2 with a round cross section is fastened, which will be described in detail later.
- This core 2 has a pole end 21 with a pole face 22, which forms a working air gap with an anchor 3.
- the example of a double relay shown in FIG. 1 are two longitudinal yoke legs 11 connected in one piece, and the common anchor 3 acts alternately with the two cores 2 together. This example shows that in such a case the core can only be inserted by can be mounted outside through the yoke leg 12. Otherwise could the invention in the same way for a Single relay with only one yoke and one core applied become.
- the double relay shown also has a known Way a bobbin 4 as a carrier for two windings 5th as well as contact springs 6 and fixed contacts 7.
- This relay structure is known for itself and needs in connection with the present Invention not to be discussed further.
- the coil core 2 is in each case with a fastening end 23 a round hole 13 of the yoke cross leg 12 attached.
- This Round hole 13 is in adaptation to the core 2 from the inside (from the Coil) flared outwards and with the diameter of the core so that the described below Penetration a good tight fit and a good magnetic Coupling results.
- the core 2 has a cylindrical one Shank 24, the diameter of which is slightly smaller than that narrowest diameter of the round hole 13 so that it from the outside easily inserted into the coil through the yoke section 12 can be. Furthermore, the core 2 has a conical section 25, which widens conically towards the fastening end 23 is. The slope has an angle ⁇ towards the end the axis of the core, which are approximately between 0.5 ° and 5 ° can. However, as already mentioned, this angle is preferably lie between 1 ° and 2 °.
- the round hole 13 has in approximately the same slope. But while the Inner surface of the round hole 13 is kept smooth, is on the threaded portion 25 has a rolling thread, the Threaded web 27 has a flattened top.
- Figure 4 is an enlarged view the detail IV in Figure 3 shows. From this you can see that the depth of the thread groove 26 compared to the thread pitch s (with a single thread) is low, so that the threaded web 27 has a flattened upper side 28, thus a trapezoidal cross section according to FIG has.
- the inside diameter of the thread is for manufacturing reasons preferably kept the same so that the thread groove 26 at the beginning of the cone section 25 - that is, at its smallest diameter - little or no surface is buried, while this groove always ends 23 gets deeper.
- a multi-start thread could also be provided.
- Figure 4 has the thread groove 26 an opening angle ⁇ of approx.
- the width of the surface 28 of the threaded web 27 (near the end 23), about half the slope s is.
- other conditions are also possible.
- a thread cross-section in the form of a flattened sawtooth be provided.
- Threaded web 27 a flattened top 28, which for example again a width near the end 23 has, which corresponds to about half the thread pitch s.
- Thread bridge In the area of the smaller cone diameter is the Thread bridge, of course, even wider, since there is the thread groove has a smaller depth d.
- Hexagonal recess molded into the attack of a Allows turning tool.
- Hexagons can also be chosen any other shape which enables the attack of a screwing tool.
- the round hole 13 preferably first preformed by a punching needle and then using a conical pin to form a calibrated conical extension.
- the yoke becomes after that soft annealed to produce homogeneous magnetic properties and a certain flexibility when screwing in the core pretend.
- the core is made in the usual way with the cylindrical shaft 24 and the conical shoulder 25 and the hexagonal recess 29 manufactured. It is then also annealed and afterwards passed through a thread rolling device where on the cone section 25 the flat thread already described rolled up becomes. The rolling process creates on the flanks the thread web 27 by material displacement small poses 30. These poses 30 experience a slight hardening and thereby improve penetration when the core is screwed in of the thread in the threadless inner surface of the round hole 13th
- the core 2 prepared in this way is, as already mentioned, inserted from the outside through the round hole 13 until the cone section 25 clamps with its thread in the round hole 13. After that with a suitable turning tool and using a certain axial force further turned, whereby the thread digs into the material of the yoke.
- the Core can be turned very precisely in the axial direction - be positioned opposite an anchor, whereby the thread also a certain backward adjustment by turning back allows. In any case, this is a good tightness of the core in the yoke and good magnetic Coupling between the core and the yoke guaranteed.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnets (AREA)
Abstract
Description
- Erzeugung eines konischen Rundloches in dem Jochabschnitt;
- Erzeugung eines Kerns mit einem zylindrischen Schaft und einem zum freien Ende hin erweiterten Kegelabschnitt an einem Ende des Kerns;
- Erzeugung eines Gewindes auf dem Kegelabschnitt;
- Durchstecken des zylindrischen Schaftes des Kerns durch das Rundloch des Jochabschnittes, bis der Kegelabschnitt in dem Rundloch klemmt und
- Drehen des Kerns in Gewinderichtung unter Anwendung einer Axialkraft, bis das freie Ende des zylindrischen Schaftes eine vorgegebene Position erreicht hat.
Claims (15)
- Elektromagnetsystem mit einem Joch (1) und mit einem Kern (2), der mit einem Befestigungsende (23) in einem Rundloch (13) eines Jochabschnittes (12) befestigt ist, wobei der Kern (2) einen, vorzugsweise zylindrischen, Schaft (24) und einen zu seinem Befestigungsende (23) hin erweiterten Kegelabschnitt (25) aufweist, welch letzterer mit einem den Durchmesser des Rundloches (13) übersteigenden Kerndurchmesser das Material des Joches durchdringt,
dadurch gekennzeichnet, daß auf dem Kegelabschnitt (25) ein Gewinde (26,27) ausgebildet ist, welches in die an sich gewindelose Wand der ebenfalls konisch erweiterten Ausnehmung (13) des Joches (1) selbstverformend eingedreht ist. - Magnetsystem nach Anspruch 1
dadurch gekennzeichnet, daß das Gewinde auf dem Kegelabschnitt (25) des Kerns (2) einen abgeflachten Gewindesteg (27,28) aufweist. - Magnetsystem nach Anspruch 2,
dadurch gekennzeichnet, daß der Gewindesteg einen annähernd trapezförmigen Querschnitt aufweist (Figur 4). - Magnetsystem nach Anspruch 2,
dadurch gekennzeichnet, daß der Gewindesteg (27) einen annähernd sägezahnförmigen Querschnitt aufweist (Figur 5). - Magnetsystem nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß der Kegelabschnitt (25) des Kerns (2) einen Steigungswinkel (α) seiner Mantelfläche gegenüber seiner Achse zwischen 0,5° und 5° aufweist. - Magnetsystem nach Anspruch 5,
dadurch gekenneichnet, daß der Steigungswinkel (α) zwischen 1° und 2°, vorzugsweise etwa 1,5°, beträgt. - Magnetsystem nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, daß das Gewinde (26,27) auf dem Kegelabschnitt (25) des Kerns (2) mit einem gleichbleibenden Durchmesser der Gewindenut (26) vorgesehen ist. - Magnetsystem nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, daß das Gewinde auf dem Kegelabschnitt (25) des Kerns (2) ein Rollgewinde ist. - Magnetsystem nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet, daß das Joch (1) und der Kern (2) weichgeglüht sind. - Magnetsystem nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet, daß das Stirnende (23) des Kegelabschnitts (25) eine axiale prismatische Ausnehmung, insbesondere einen Innensechskant (29), zur Aufnahme eines Drehwerkzeuges aufweist. - Verfahren zum Herstellen eines Elektromagnetsystems nach einem der Ansprüche 1 bis 10,
gekennzeichnet durch folgende Schritte:Erzeugung eines konischen Rundloches (13) in einem Jochabschnitt (12);Herstellung eines Kerns (2) mit einem zylindrischen Schaft (24) und einem zum freien Ende hin erweiterten Kegelabschnitt (25);Erzeugung eines Gewindes (26,27) auf dem Kegelabschnitt (25);Durchstecken des zylindrischen Schaftes (24) des Kerns (2) durch das Rundloch (13) des Jochabschnittes (12), bis der Kegelabschnitt in dem Rundloch klemmt; undDrehen des Kerns (2) in Gewinderichtung unter Anwendung einer Axialkraft, bis das freie Ende des zylindrischen Schaftes (24) eine vorgegebene Position erreicht hat. - Verfahren nach Anspruch 11,
dadurch gekennzeichnet, daß das Rundloch (13) gestanzt und mit einem konischen Stift kalibriert wird. - Verfahren nach Anspruch 11 oder 12,
dadurch gekennzeichnet, daß das Gewinde (26,27) im Rollverfahren erzeugt wird. - Verfahren nach einem der Ansprüche 11 bis 13,
dadurch gekennzeichnet, daß das Joch (1) nach der Erzeugung des konischen Rundloches (13) weichgeglüht wird. - Verfahren nach Anspruch 13 oder 14,
dadurch gekennzeichnet, daß der Kern (2) vor dem Gewinderollen weichgeglüht wird.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19726055 | 1997-06-19 | ||
| DE19726055A DE19726055C1 (de) | 1997-06-19 | 1997-06-19 | Elektromagnetsystem und Verfahren zum Fügen von Kern und Joch in einem solchen System |
| PCT/DE1998/001386 WO1998059351A2 (de) | 1997-06-19 | 1998-05-20 | Elektromagnetsystem und verfahren zum fügen von kern und joch in einem solchen system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0990246A2 EP0990246A2 (de) | 2000-04-05 |
| EP0990246B1 true EP0990246B1 (de) | 2002-08-28 |
Family
ID=7833034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98934755A Expired - Lifetime EP0990246B1 (de) | 1997-06-19 | 1998-05-20 | Elektromagnetsystem und verfahren zum herstellen eines solchen systems |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6300851B1 (de) |
| EP (1) | EP0990246B1 (de) |
| JP (1) | JP3923092B2 (de) |
| KR (1) | KR100515433B1 (de) |
| CA (1) | CA2294156C (de) |
| DE (2) | DE19726055C1 (de) |
| TW (1) | TW382715B (de) |
| WO (1) | WO1998059351A2 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3590738B2 (ja) * | 1999-04-27 | 2004-11-17 | Necトーキン株式会社 | 電磁継電器およびその調整方法と組立方法 |
| US7548146B2 (en) * | 2006-12-27 | 2009-06-16 | Tyco Electronics Corporation | Power relay |
| JP4803206B2 (ja) * | 2008-04-24 | 2011-10-26 | パナソニック電工株式会社 | リレー用電磁石 |
| EP3025846B1 (de) * | 2014-11-28 | 2019-11-13 | Crompton Technology Group Limited | Zusammengesetzter Zug-/Druckstab |
| JP7735788B2 (ja) * | 2021-10-22 | 2025-09-09 | オムロン株式会社 | 電磁継電器 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3209294A (en) * | 1962-10-23 | 1965-09-28 | Westinghouse Electric Corp | Magnetic core structures |
| DE3148052A1 (de) * | 1981-12-04 | 1983-06-09 | Robert Bosch Gmbh, 7000 Stuttgart | Elektromagnetisches relais und verfahren zu seiner herstellung |
| US4720909A (en) * | 1983-10-31 | 1988-01-26 | Amf Inc. | Method of manufacturing miniature power switching relays |
| WO1991018408A1 (de) * | 1990-05-14 | 1991-11-28 | Siemens Aktiengesellschaft | Elektromagnetisches schaltsystem und verfahren zu dessen herstellung |
| DE4122705C1 (de) * | 1991-07-09 | 1992-07-30 | Siemens Ag, 8000 Muenchen, De | |
| US5311162A (en) * | 1993-05-14 | 1994-05-10 | Evolutionary Concepts, Inc. | Solenoid device |
| JPH0917312A (ja) * | 1995-06-27 | 1997-01-17 | Matsushita Electric Works Ltd | 有極リレー |
-
1997
- 1997-06-19 DE DE19726055A patent/DE19726055C1/de not_active Expired - Fee Related
-
1998
- 1998-05-13 TW TW087107378A patent/TW382715B/zh not_active IP Right Cessation
- 1998-05-20 KR KR10-1999-7011953A patent/KR100515433B1/ko not_active Expired - Fee Related
- 1998-05-20 JP JP50352999A patent/JP3923092B2/ja not_active Expired - Fee Related
- 1998-05-20 EP EP98934755A patent/EP0990246B1/de not_active Expired - Lifetime
- 1998-05-20 DE DE59805327T patent/DE59805327D1/de not_active Expired - Fee Related
- 1998-05-20 WO PCT/DE1998/001386 patent/WO1998059351A2/de not_active Ceased
- 1998-05-20 US US09/445,707 patent/US6300851B1/en not_active Expired - Fee Related
- 1998-05-20 CA CA002294156A patent/CA2294156C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE19726055C1 (de) | 1998-11-12 |
| DE59805327D1 (de) | 2002-10-02 |
| CA2294156A1 (en) | 1998-12-30 |
| CA2294156C (en) | 2006-12-05 |
| JP2002508881A (ja) | 2002-03-19 |
| WO1998059351A2 (de) | 1998-12-30 |
| EP0990246A2 (de) | 2000-04-05 |
| KR20010013931A (ko) | 2001-02-26 |
| KR100515433B1 (ko) | 2005-09-20 |
| TW382715B (en) | 2000-02-21 |
| WO1998059351A3 (de) | 1999-03-18 |
| US6300851B1 (en) | 2001-10-09 |
| JP3923092B2 (ja) | 2007-05-30 |
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