EP0743659B1 - Corps de bobine, en particulier pour relais de petite dimension, et son procédé de fabrication - Google Patents

Corps de bobine, en particulier pour relais de petite dimension, et son procédé de fabrication Download PDF

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Publication number
EP0743659B1
EP0743659B1 EP96106859A EP96106859A EP0743659B1 EP 0743659 B1 EP0743659 B1 EP 0743659B1 EP 96106859 A EP96106859 A EP 96106859A EP 96106859 A EP96106859 A EP 96106859A EP 0743659 B1 EP0743659 B1 EP 0743659B1
Authority
EP
European Patent Office
Prior art keywords
coil
mould
coil tube
winding
tube
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
EP96106859A
Other languages
German (de)
English (en)
Other versions
EP0743659A1 (fr
Inventor
Alfred Heinzl
Heinz Stadler
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP0743659A1 publication Critical patent/EP0743659A1/fr
Application granted granted Critical
Publication of EP0743659B1 publication Critical patent/EP0743659B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/44—Magnetic coils or windings
    • H01H2050/446—Details of the insulating support of the coil, e.g. spool, bobbin, former

Definitions

  • the invention relates to a coil former, in particular for Small relay, made of insulating material, consisting of a coil tube as a winding carrier with an axially continuous core opening for holding a core and with one in the area of one integrally molded each end portion of the coil tube Flange.
  • the invention also relates to a method for Production of such a bobbin.
  • Such a coil former is, for example, from CH-A-0 657 473 known.
  • Such bobbins are generally with Injection molds shaped, the outer contours over two mold halves can be designed while the axially continuous Core opening via so-called core pulls, i.e. specially driven ones Slider in the form to be generated. Such additional, cause movable slides relative to the mold halves a complicated mold structure, a complex control and an increased expenditure of time.
  • the Coil body has a U-shaped cross section, so that the coil tube thus has a continuously open longitudinal slot having.
  • This bobbin can therefore without additional Core pulls are formed in the casting tool, but it can because of of the continuously open coil tube also not on one normal winding mandrel.
  • the core will be not inserted axially, but inserted laterally; only after the winding is applied.
  • a bobbin is already made a hollow core and two perpendicular to the coil axis End flanges known, which are made with a two-part shape can be.
  • the mold halves are in the axial direction of the bobbin moves, the flanges each are alternately interrupted to form the passage of the respective mold section.
  • coil formers are not possible in the flange area provide radial plug-in channels for coil connection elements.
  • the aim of the present invention is to form a coil former create and a manufacturing process for such a bobbin specify that in a simple two-part injection mold can be produced without relatively moving parts and in the same way as conventionally manufactured bobbins can be processed further, e.g. B. by plugging on a winding mandrel and by winding the winding ends Connection pins in the coil flange.
  • this goal is achieved with a coil former achieved in that the coil tube a plurality of radial recesses has, which alternately the wall of the coil tube penetrate from opposite sides like a window, and connect to each other without any space, that the sum of these radial recesses of the total length of the coil tube in the region of the central axis of the Coil tube corresponds.
  • This bobbin is produced according to the invention with a two-part shape, the mold parting plane through the Coil axis or parallel to this, being through the the outer contour of the coil former is specified in both mold halves is and by alternately opposed by the two mold halves Form approaches projecting in the radial direction a continuous in the axial area of the mold cavity filled core area is formed, which after filling the remaining cavities with plastic and after separation the mold halves gives the desired continuous core opening.
  • the coil former formed according to the invention accordingly has one held together over the entire circumference by insulating material Coil tube, although its walls alternate are interrupted on opposite sides.
  • the bobbin can therefore be used for winding on a normal winding mandrel be plugged on and it can be a normal after winding Take up the axially inserted core.
  • the interruptions mentioned in the wall of the coil tube interfere with winding not and also reduce the stability of the bobbin not critical. Also the insulation distance between the winding and core is guaranteed, especially with one rectangular or approximately rectangular cross section of the coil tube.
  • the length of each break depends on the number of alternately provided in both mold halves Approaches from; it can be designed according to the desired design the coil body and the desired size of individual cavities depending on the flow behavior of the insulating material to get voted.
  • Through the invention also in the Windows of the coil tube that arise in the flange areas can the winding wire from a pin directly to the bottom Winding position are performed without it through the above lying turns is squeezed. Also a strain relief is easy by pushing the connector pin Way possible.
  • the inventive Design of the bobbin and the corresponding manufacturing process the injection mold much easier and is less expensive than the production of conventional ones Bobbin.
  • the mold nests for simultaneous molding a larger number of bobbins may be due to the lack additionally driven moving parts very close to each other to be ordered. This also shortens the gates and there can be a larger number of bobbins be produced in an injection molding cycle.
  • the coil former 1 shown in FIGS. 1 to 3 is molded entirely of plastic. It consists of one Coil tube 2 with molded onto the end regions of the winding space Flanges 3 and 4 as well as end flanges 5 and 6.
  • the bobbin has its entire length an axial core opening 7, which is alternately opposed by formed in the coil tube engaging radial recesses is.
  • the coil tube has over wall elements connected along its entire circumference, through the window-shaped recesses 7a, 7b and 7c interrupted once from one side and once from the other are, but still the necessary stability for result in the coil tube and attaching the coil body allow on a mandrel.
  • the rectangular Cross section of the coil tube 2 is also ensured that also the lower winding layer over the recess 7a remains tensioned at the same height as when the coil tube 2 also a closed wall on its top would have.
  • the winding pins 10 are retrofitted inserted, as indicated in FIG. 1 (in FIG. 2 and 3 this pin is not shown). Due to the fact, that the radial recess 7a extends into the region of the flange 4 extends, the winding wire 11 from the winding pin 10 directly through the recess in the flange 4 are led to the lowest winding layer 8. The coil wire can therefore not from the overlying turns 12 be squeezed. Also, no breakthroughs can be made. Strain relief is also possible. To this end the pin 10 is first in the designated 10 ' Broken position brought and wound with the beginning of the wire. After winding, the connector pin is around the Distance "h" shifted down, causing tension of the wire start loosens.
  • Figure 4 is the same view as in Figure 3 on the Front of the bobbin shown, but with two inserted Pins 10. This is again the Wire guidance of the winding start 11 from the pin 10th shown by the recess 7a in the flange 4.
  • the manufacture of the bobbin is again briefly based on of Figure 5 explained.
  • the bobbin 21 shown here is shown in longitudinal section similar to Figure 1.
  • the coil tube 22 becomes the coil former of FIG. 1 in this case from five radial recesses 27a to 27e Formation of the core opening 27 penetrates.
  • the bobbin still shown inside the injection mold, this Mold from a lower mold half 15 and an upper mold half 16 exists.
  • the mold parting plane 17 runs parallel to the axis and in the vicinity of the axis of the coil body 21.
  • the bobbin is made by approaches of the lower mold half 15, namely the approaches 15a, 15b and 15c generated, while that of radial recesses 27b and 27d engaging above Lugs 16a and 16b of the upper mold half 16 are generated. By spraying out the remaining cavities, this becomes Coil tube 22 made of plastic. After that, the shape opened, and the finished bobbin can be processed will.
  • FIG. 5 there are also 22 displacement ribs within the coil tube 23 shown, which is used to clamp the Serve core in the bobbin. You can in any Shape by the radial lugs 15a to 16b of the injection mold are generated in a particularly simple manner.
  • FIGS. 6 and 7 A particularly favorable arrangement is shown in FIGS. 6 and 7 shown for the joint molding of several bobbins. Due to the simple design without a relatively movable cross slide the individual mold nests can be placed close to each other to be ordered.
  • Figure 6 shows a series of parallel juxtaposed and co-molded coils 1, which is initially connected via two sprue bars 18 remain and thus easy to handle for further processing are.
  • FIG. 7 shows an arrangement of coil formers 1 in one Double row with a common middle gate 18.
  • the sprue has an injection molded on one side Eyelet 19, at the other end an injection molded Knob 20.
  • There is one in the injection mold Picture in which the last sprayed strip is located and protrudes into the mold cavity with the button 20.
  • the following sprayed strip piece connects with the previous, d. H. connects the eyelet 19 of the subsequent strip with button 20 of the previous strip, so that through the successive injection molding cycles an endless belt arises, which is very cheap in a production line can be
  • a coil body 31 is in a cross section through whose coil tube 32 is shown, in which the coil tube 32 in Area of the winding on two opposite long sides is open.
  • the remaining long sides 32a top and below by a very small height "b" the height of the Core opening 37 or the core 33.
  • the winding thus receives two opposite sides only the one required for insulation Minimum distance to the core 33, which creates additional volume is saved.
  • This coil former is also in the flange area 31 like the coil former 1 in FIGS. 1 to 3 built up.
  • FIG perspective view shown A somewhat modified coil former is shown in FIG perspective view shown.
  • This coil former 41 has a coil tube 42, which has three on the top Recesses 7a, 7b and 7c as well as offset on the Bottom has four recesses 7d, 7e, 7f and 7g. How can be seen on this perspective representation through the recesses also the flanges 43 and 44 the top, partly broken at the bottom.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Insulating Of Coils (AREA)

Claims (9)

  1. Corps de bobine en matériau isolant, formé par un tube de bobine (2; 22; 32; 42) en tant que support d'enroulement, avec une ouverture pour noyau (7; 27; 37) continue dans le sens axial et destinée à recevoir un noyau, et pourvu d'une bride respective (3, 4; 43, 44) formée de manière solidaire à la région de chacun des segments d'extrémité du tube de bobine (2; 22; 32; 42) , caractérisé en ce que le tube de bobine (2; 22; 32; 42) est pourvu de plusieurs évidements radiaux (7a à 7c; 27a à 27e) qui traversent la paroi du tube de bobine alternativement sur des côtés opposés en formant des fenêtres et se succèdent sans espace intermédiaire, de manière à ce que la somme de ces évidements radiaux (7a à 7c; 27a à 27e) corresponde à la longueur totale du tube de bobine (2, 22, 32, 42) dans la région de l'axe du tube de bobine (2; 22; 32; 42).
  2. Corps de bobine selon la revendication 1, caractérisé en ce que des canaux d'insertion (9) pour les broches de raccordement (10) du bobinage sont prévus dans les brides (3, 4), lesquels canaux sont dirigés parallèlement aux évidements radiaux.
  3. Corps de bobine selon la revendication 2, caractérisé en ce que les zones d'enroulement des broches de raccordement (10) sont, à chaque fois, contiguës à un évidement radial (7a) traversant une bride.
  4. Corps de bobine selon l'une des revendications 1 à 3, caractérisé en ce que le tube de bobine (2; 32) est pourvu d'un évidement radial (7a) continu sur toute la longueur du bobinage, le bord du tube de bobine (2) dépassant l'ouverture pour noyau (7; 37), sur le côté ouvert, d'une hauteur inférieure à l'épaisseur de la paroi.
  5. Corps de bobine selon la revendication 4, caractérisé en ce que le tube de bobine (32) est pourvu d'un évidement radial continu sur deux côtés longitudinaux opposés, de manière à ce que les côtés longitudinaux restants (32a) dépassent l'ouverture pour noyau (37) d'une hauteur inférieure à l'épaisseur de la paroi.
  6. Procédé de fabrication de corps de bobine selon l'une des revendications 1 à 5, caractérisé en ce qu'on utilise un moule (15, 16) en deux parties avec un plan de jonction qui s'étend parallèlement à l'axe de la bobine, en ce qu'au moins un espace vide correspondant à la forme extérieure du corps de bobine (1; 21) est formé entre les deux demi-moules (15, 16), une zone de noyau remplie de manière continue étant formée dans la région axiale de l'espace vide du moule, de manière commune, grâce à des saillies de moule (15a, 15b, 15c, 16a, 16b) saillant alternativement des deux demi-moules en direction opposée l'une à l'autre et en direction radiale, et en ce que l'espace vide subsistant entre les demi-moules (15, 16) et les saillies de moule (15a, 15b, 15c, 16a, 16b) est rempli avec le matériau isolant.
  7. Procédé selon la revendication 6, caractérisé en ce que, pour fabriquer une pluralité de corps de bobine (1), une pluralité d'espaces vides de moulage destinés chacun à un corps de bobine respectif (1) est formée entre les deux demi-moules, de manière à ce que, après la séparation des demi-moules, les corps de bobines démoulés sous forme d'une bande restent unis par le biais d'au moins une barrette de moulage (17; 18), les axes de tous les corps de bobine (1), parallèles ou alignés les uns derrière les autres, étant disposés en une ou plusieurs rangées et étant situés dans un même plan.
  8. Procédé selon la revendication 7, caractérisé en ce qu'au début et à la fin d'une barrette de moulage (18) sont formés à chaque fois des éléments de liaison (19, 20) complémentaires l'un par rapport à l'autre, au moyen desquels les bandes (18) formées, respectivement, lors d'un cycle de moulage sont reliées pour former une bande continue.
  9. Procédé selon la revendication 8, caractérisé en ce que l'élément de liaison (20) formé à la fin de la barrette de moulage (18) est, à chaque fois, introduit dans le moule lors du cycle de moulage qui suit, et en ce que l'élément de liaison (19) formé au début de la barrette de moulage de la bande suivante est formé directement sur le premier élément de liaison (20).
EP96106859A 1995-05-18 1996-04-29 Corps de bobine, en particulier pour relais de petite dimension, et son procédé de fabrication Expired - Lifetime EP0743659B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19518349A DE19518349C1 (de) 1995-05-18 1995-05-18 Spulenkörper, insbesondere für Kleinrelais sowie Verfahren zu dessen Herstellung
DE19518349 1995-05-18

Publications (2)

Publication Number Publication Date
EP0743659A1 EP0743659A1 (fr) 1996-11-20
EP0743659B1 true EP0743659B1 (fr) 1998-07-22

Family

ID=7762303

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96106859A Expired - Lifetime EP0743659B1 (fr) 1995-05-18 1996-04-29 Corps de bobine, en particulier pour relais de petite dimension, et son procédé de fabrication

Country Status (4)

Country Link
US (1) US5781287A (fr)
EP (1) EP0743659B1 (fr)
JP (1) JPH08330168A (fr)
DE (2) DE19518349C1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7126450B2 (en) * 1999-06-21 2006-10-24 Access Business Group International Llc Inductively powered apparatus
JP2001346365A (ja) * 2000-06-01 2001-12-14 Sumitomo Heavy Ind Ltd リニアモータ用コイルユニットの単体コイル、その巻き取り、成型方法及び装置、及びコイルユニットの成形、製造方法
CN1922700A (zh) 2003-02-04 2007-02-28 通达商业集团国际公司 感应线圈组件
JP2006351284A (ja) * 2005-06-14 2006-12-28 Matsushita Electric Works Ltd 電磁リレーの電磁石ブロックおよび電磁リレー
CN105355419B (zh) * 2015-11-15 2017-05-31 艾柯电器（苏州）有限公司 一种绕线模具

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428826A (en) * 1944-10-27 1947-10-14 Shure Bros Coil and support construction
DE6903063U (de) * 1969-01-28 1969-11-06 Sel Kontakt Bauelemente G M B Spulenkoerper
DE6907606U (de) * 1969-02-26 1969-11-13 Sel Kontakt Bauelemente G M B Spulenkoerper
SE331717B (fr) * 1970-02-23 1971-01-11 Ericsson Telefon Ab L M
BE880922A (nl) * 1979-12-28 1980-06-30 Bell Telephone Mfg Spoelvorm
FR2494889A1 (fr) * 1980-11-25 1982-05-28 Legrand Sa Carcasse pour transformateur
JPS5826772A (ja) * 1981-08-04 1983-02-17 Canon Electronics Inc コイルボビン
JPS59103316A (ja) * 1982-12-06 1984-06-14 Kijima Musen Kk 電気巻線部品
CH657473A5 (en) * 1982-12-22 1986-08-29 Gfeller Ag Coil former for winding with an electrically insulated conductor
JPS62140402A (ja) * 1985-12-14 1987-06-24 Omron Tateisi Electronics Co スプ−ル
KR910005073B1 (ko) * 1988-01-26 1991-07-22 후지덴기 가부시기가이샤 전자계전기(電磁繼電器)
US4891620A (en) * 1988-07-22 1990-01-02 Cheng Bruce C H Insulating tubeless transformer

Also Published As

Publication number Publication date
DE59600357D1 (de) 1998-08-27
DE19518349C1 (de) 1996-05-30
US5781287A (en) 1998-07-14
JPH08330168A (ja) 1996-12-13
EP0743659A1 (fr) 1996-11-20

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