EP0990246B1 - Systeme d'electro-aimant et procede pour fabriquer un tel systeme - Google Patents

Systeme d'electro-aimant et procede pour fabriquer un tel systeme Download PDF

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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
Application number
EP98934755A
Other languages
German (de)
English (en)
Other versions
EP0990246A2 (fr
Inventor
Rudolf Baur
Horst Hendel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TE Connectivity Solutions GmbH
Original Assignee
Tyco Electronics Logistics AG
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 Logistics AG filed Critical Tyco Electronics Logistics AG
Publication of EP0990246A2 publication Critical patent/EP0990246A2/fr
Application granted granted Critical
Publication of EP0990246B1 publication Critical patent/EP0990246B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)

Abstract

L'invention concerne un système d'électro-aimant comportant une culasse (1) et un noyau rond (2) qui possède une tige cylindrique et une partie conique (25) élargie vers l'extérieur en direction d'une extrémité de fixation. Le noyau est inséré avec sa tige saillante, à partir du côté extérieur, dans un trou rond (13) de la culasse. En outre, la partie conique (25) du noyau présente un filetage permettant son introduction par rotation dans le trou rond sans filet (13) de la culasse (1). Le noyau peut ainsi être positionné avec précision et l'on obtient une bon ajustement serré et un bon couplage magnétique.

Claims (15)

  1. Système électromagnétique comportant une culasse (1) et un noyau (2), fixé avec une extrémité de fixation (23) dans un trou rond (13) d'une section de la culasse (12), le noyau (2) comportant une tige de préférence cylindrique (24) et une section conique (25) élargie en direction de son extrémité de fixation (23), cette dernière pénétrant, avec un diamètre de noyau supérieur au diamètre du trou rond (13), dans le matériau de la culasse,
       caractérisé en ce que la section conique (25) comporte un filetage (26, 27) inséré par vissage et par auto-déformation dans la paroi non filetée de l'évidement présentant également une extension conique (13) de la culasse (1).
  2. Système magnétique selon la revendication 1, caractérisé en ce que le filetage comporte sur la section conique (25) du noyau (2) une nervure filetée aplatie (27, 28).
  3. Système magnétique selon la revendication 2, caractérisé en ce que la nervure filetée a une section transversale pratiquement trapézoïdale (figure 4).
  4. Système magnétique selon la revendication 2, caractérisé en ce que la nervure filetée (27) a une section transversale pratiquement en forme de dents de scie (figure 5).
  5. Système magnétique selon l'une des revendications 1 à 4, caractérisé en ce que la section conique (25) du noyau (2) forme un angle d'inclinaison (α) compris entre 0,5° et 5° entre sa surface d'enveloppe et son axe.
  6. Système magnétique selon la revendication 5, caractérisé en ce que l'angle d'inclinaison (α) est compris entre 1° et 2°, et correspond de préférence environ 1,5°.
  7. Système magnétique selon l'une des revendications 1 à 6, caractérisé en ce que le filetage (26, 27) sur la section conique (25) du noyau (2) a un diamètre constant de la nervure filetée (26).
  8. Système magnétique selon l'une des revendications 1 à 7, caractérisé en ce que le filetage sur la section conique (25) du noyau (2) est un filetage enroulé.
  9. Système magnétique selon l'une des revendications 1 à 8, caractérisé en ce que la culasse (1) et le noyau (2) sont soumis à un recuit.
  10. Système magnétique selon l'une des revendications 1 à 9, caractérisé en ce que l'extrémité frontale (23) de la section conique (25) comporte un évidement axial prismatique, en particulier un évidement à six pans creux (29) en vue de la réception d'un outil de rotation.
  11. Procédé de fabrication d'un système électromagnétique selon l'une des revendications 1 à 10,
       caractérisé par les étapes ci-dessous :
    formation d'un trou rond conique (13) dans une section de la culasse (12) ;
    production d'un noyau (2) avec une tige cylindrique (24) et une section conique (25) élargie en direction de l'extrémité libre ;
    production d'un filetage (26, 27) sur la section conique (25) ;
    insertion de la tige cylindrique (24) du noyau (2) à travers le trou rond (13) de la section de la culasse (12) jusqu'au blocage de la section conique dans le trou rond ; et
    rotation du noyau (2) dans le sens du filetage avec application d'une force axiale jusqu'à ce que l'extrémité libre de la tige cylindrique (24) a atteint une position prédéterminée.
  12. Procédé selon la revendication 11, caractérisé en ce que le trou rond (13) est estampé et calibré avec une goupille conique.
  13. Procédé selon les revendications 11 ou 12, caractérisé en ce que le filetage (26, 27) est produit par un procédé d'enroulement.
  14. Procédé selon l'une des revendications 11 à 13, caractérisé en ce que la culasse (1) est soumise à u recuit après la production du trou rond conique (13).
  15. Procédé selon les revendications 13 ou 14, caractérisé en ce que le noyau (2) est soumis à un recuit avant l'enroulement du filetage.
EP98934755A 1997-06-19 1998-05-20 Systeme d'electro-aimant et procede pour fabriquer un tel systeme Expired - Lifetime EP0990246B1 (fr)

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 (fr) 1997-06-19 1998-05-20 Systeme d'electro-aimant et procede pour assembler un noyau et une culasse dans un tel systeme

Publications (2)

Publication Number Publication Date
EP0990246A2 EP0990246A2 (fr) 2000-04-05
EP0990246B1 true EP0990246B1 (fr) 2002-08-28

Family

ID=7833034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98934755A Expired - Lifetime EP0990246B1 (fr) 1997-06-19 1998-05-20 Systeme d'electro-aimant et procede pour fabriquer un tel systeme

Country Status (8)

Country Link
US (1) US6300851B1 (fr)
EP (1) EP0990246B1 (fr)
JP (1) JP3923092B2 (fr)
KR (1) KR100515433B1 (fr)
CA (1) CA2294156C (fr)
DE (2) DE19726055C1 (fr)
TW (1) TW382715B (fr)
WO (1) WO1998059351A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
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 (fr) * 2014-11-28 2019-11-13 Crompton Technology Group Limited Entretoise de tension/compression composite
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)

* Cited by examiner, † Cited by third party
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 (fr) * 1990-05-14 1991-11-28 Siemens Aktiengesellschaft Systeme commutateur electromagnetique et son procede de production
DE4122705C1 (fr) * 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

Also Published As

Publication number Publication date
DE19726055C1 (de) 1998-11-12
DE59805327D1 (de) 2002-10-02
CA2294156A1 (fr) 1998-12-30
CA2294156C (fr) 2006-12-05
JP2002508881A (ja) 2002-03-19
WO1998059351A2 (fr) 1998-12-30
EP0990246A2 (fr) 2000-04-05
KR20010013931A (ko) 2001-02-26
KR100515433B1 (ko) 2005-09-20
TW382715B (en) 2000-02-21
WO1998059351A3 (fr) 1999-03-18
US6300851B1 (en) 2001-10-09
JP3923092B2 (ja) 2007-05-30

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