EP0069973B1 - Bobine de transformateur - Google Patents

Bobine de transformateur Download PDF

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Publication number
EP0069973B1
EP0069973B1 EP82106040A EP82106040A EP0069973B1 EP 0069973 B1 EP0069973 B1 EP 0069973B1 EP 82106040 A EP82106040 A EP 82106040A EP 82106040 A EP82106040 A EP 82106040A EP 0069973 B1 EP0069973 B1 EP 0069973B1
Authority
EP
European Patent Office
Prior art keywords
coil
winding
core
flange
longitudinal rib
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
Application number
EP82106040A
Other languages
German (de)
English (en)
Other versions
EP0069973A1 (fr
Inventor
Erwin Ing.grad. Müller
Josef Robl
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 EP0069973A1 publication Critical patent/EP0069973A1/fr
Application granted granted Critical
Publication of EP0069973B1 publication Critical patent/EP0069973B1/fr
Expired 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
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads

Definitions

  • the invention relates to a transformer coil with a one-piece coil body made of insulating material with flanges formed on both ends and with a core bore, in the area of which a longitudinal rib is formed, with winding support points arranged on at least one coil flange, and with one arranged in the core bore, axially over the iron core extending beyond the coil flanges.
  • Such a transformer coil is already known from DE-B-1 539 679.
  • a coil former made of plastic with an approximately rectangular winding cylinder is used, in which a sheet metal core with alternately connected iron sheets is inserted.
  • the inner wall of the winding cylinder is provided with burr-like strips in order to achieve a press fit or tolerance compensation for the laminated core when the core sheets are inserted.
  • such a transformer coil with a rectangular cross section cannot be used, for example, in rotationally symmetrical transformers, in particular in rotary transformers. In such applications, it is also desirable to widen the core outside the coil flanges in the radial direction in order to better close the iron circuit.
  • the core can neither be layered as a laminated core, nor can it be introduced in one piece into the coil former.
  • the winding support points cannot be provided next to one another on the coil flange as in the known coil.
  • DE-A-2 208 457 shows a winding body for transformers which, because of its rectangular cross section, is not suitable for a rotary transformer. In the case of a rotationally symmetrical core with iron flanges, the adjacent winding support points on the bobbin flange would also interfere.
  • US-A-4 166 265 generally shows a bobbin with winding support points which are arranged in the form of wires or pins in a flange. Because of the rectangular cross-section and because of the winding support points lying next to one another, this coil former would also be out of the question for a rotary transformer.
  • the object of the invention is to design a transformer coil of the type mentioned with a rotationally symmetrical and enlarged at the outer ends in cross-section, which is particularly suitable for use as a rotor of a rotary transformer, so that the manufacture and winding of the coil body and also the assembly of the core can be made simple and inexpensive.
  • a bobbin makes it possible, for example, to insert a two-part slotted, sleeve-shaped core from the two ends into the bobbin and to align the slots in each case on the longitudinal rib of the bobbin.
  • these winding support points can be provided on a rib-shaped extension of the longitudinal rib, this extension coming to rest in a radial recess in the core, which is expanded outside the coil to form an iron flange.
  • two or more winding support points on the coil flange are expediently arranged one above the other in the radial direction in order to obtain good insulation for the applied winding ends even in a narrow slot in the iron flange.
  • the winding bases themselves can be on be formed on the coil flange or on the rib-shaped extension in the form of two hook-shaped lugs.
  • the winding axes of the two winding support points form such an angle with respect to one another that the winding movement of the wire on one winding support point does not touch the other winding support point.
  • the angle required for this can be determined in individual cases on the basis of the size relationships of the coil flange and the winding support points.
  • the winding support points have grooves which are recessed at least on one side, as a result of which the distance between the wound winding ends and a slotted iron core is also increased. It would also be beneficial to fix the winding ends in recessed grooves all around, but in general the one-sided groove is easier to manufacture using tools. Furthermore, it is expedient that the coil flange carrying the winding support points is radially slotted next to these winding support points and thus enables the wire to enter the winding start.
  • winding support points can also be embedded in the form of wires in the end of the longitudinal rib or in the extension thereof.
  • further metal inserts can also be embedded in the longitudinal rib or inserted subsequently, for example in order to achieve a phase shift in a transformer.
  • a bobbin 1 which preferably consists of elastic, temperature-resistant, thermoplastic insulating material.
  • the winding 3 which is only indicated, is applied to the coil tube 2 and is delimited by the flanges 4 and 5 at both ends of the coil body.
  • the core bore 6 serves to receive an iron core, as is shown, for example, in FIG. 4.
  • the bobbin has a longitudinal rib 7 in the bore 6, which extends beyond the flange 4 into a rib-shaped extension 8 and forms two hook-shaped winding support points 9 and 10. This makes it possible to use a core with an iron flange overlapping the coil flange 4 if it has a slot for receiving the rib-shaped extension 8.
  • This slot can be relatively narrow, since the winding support points 9 and 10 are arranged radially one above the other in a line. This means that coils that are to accommodate a core with iron flanges can also be wound quickly and inexpensively, since very thin untwisted winding ends can be wound quickly at the winding support points 9 and 10, and the binding and knotting of the winding ends previously required in such coils is eliminated. In addition, due to the lack of the tying knots, there is a considerable gain in changing space.
  • the coil flange 4 has a slot 12 for the wire entry of the winding start 11, the slot edges are also rounded, and an inlet bevel 13 is formed on the coil flange with a small angle y.
  • the winding end 14 is in turn guided through the slot 12 of the coil flange 4 onto the winding base 10.
  • Both winding support points 9 and 10 are inclined with respect to one another in their winding axis in such a way that when winding onto one support point the other does not hinder the looping movement of the wire.
  • the angles of the winding plane ⁇ at the winding base 9 and 8 at the winding base 10 are chosen to be correspondingly large with respect to the end plane of the coil former, taking into account the distances between these two winding bases and the other dimensions.
  • winding support points 9 and 10 secure the winding ends against slipping.
  • these winding support points continue to have grooves 15 on one side, so that the applied winding ends can lie flush with the lateral surface of the winding support points.
  • the winding support points could also be provided with grooves on all sides, but this would result in a more complicated tool design for the manufacture of the coil former.
  • the coil flanges 4 and 5 are on the one hand tapered outwards for reasons of strength and shape, and on the other hand to facilitate mechanized winding and are rounded on the inside edges.
  • FIGS. 4 and 5 show the application of the coil former from FIGS. 1 to 3 in a transformer, as is used, for example, in a rotary ring-less resolver.
  • a two-part core is arranged in the coil former 1 with the winding 2, the two parts 16 and 17 of which are each inserted into the core bore from the coil ends.
  • these core halves 16 and 17 are each sleeve-shaped and with their inner bore placed on a rotor shaft 18.
  • these core halves are each formed into iron flanges 19 and 20, which extend in the radial direction next to the coil flanges and each form air gaps 25 with respect to the iron core 21 of a stator coil 22 (bearings are not shown).
  • the core halves 16 and 17 including theirs Iron flanges 19 and 20 are continuously provided with a slot 23, by means of which they are aligned on the longitudinal rib 7 of the coil body 1.
  • the slot 23 is expanded into a recess 24 in order to ensure a sufficient insulating distance from the wound winding ends of the coil 3.
  • 6 to 10 show modified versions of the bobbin 1 in a schematic representation.
  • 6 shows a bobbin 31 which has a chamber 33 in the longitudinal rib 32 which, for example, can accommodate short-circuiting pieces for phase shifting a transformer.
  • Such metal parts can be subsequently inserted into the chamber 33 or embedded during the manufacture of the coil former.
  • winding support points which also serve as soldering support points, can be provided, for example, on the invisible side of the opposite coil flange 34.
  • FIG. 7 shows a coil former 41 with a longitudinal rib 42, in which two wire pieces 44 and 45 are embedded as winding support points in the region of the coil flange 43.
  • the longitudinal rib 52 on the coil flange 53 has an extension 54 which also has embedded winding support points in the form of wires 55 and 56.
  • the wires are arranged at an angle to one another such that the winding movement of the wire around one winding base does not hinder the other winding base.
  • FIGS. 10 and 10 show in a further modification a bobbin 61, the longitudinal rib 62 of which forms two webs 63 and 64. These webs in turn form a chamber for inserts, such as short-circuit pieces or other metal inserts.
  • these webs 63 and 64 each have extensions 65 and 66 which extend along the coil flange 67 in the radial direction. This means that inserts that have been unwound can be guided in isolation up to the outer diameter of the coil flange.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulating Of Coils (AREA)

Claims (10)

1. Bobine de transformateur comportant un mandrin de bobine (1) d'une pièce en matière isolante avec des joues (4, 5) formées aux deux extrémités et avec un alésage à noyau (6), dans lequel est formée une nervure longitudinale (7), des points d'appui de bobinage (9, 10) disposés sur au moins une joue de mandrin, ainsi qu'un noyau de fer disposé dans l'alésage, à noyau (6) et s'étendant axialement au-delà des joues du mandrin, caractérisée en ce que
- le noyau de fer est divisé transversalement à sa direction longitudinale en deux parties de noyau (16, 17) qui présentent chacune dans la direction longitudinale une fente (23) qui coupe complètement la paroi du noyau, de même qu'une joue (19, 20) formée sur chacune de leurs extrémités faisant saillie du mandrin de bobine (1,31,41,51,61),
- la nervure longitudinale (7, 32, 42, 52, 62) du mandrin de bobine (1, 31, 41, 51, 61) pénètre dans les fentes (23) des deux parties de noyau (16,17) et
- les points d'appui de bobinage (9,10, 44,45, 55, 56) sont disposés au bout de la nervure longitudinale (7, 32, 42, 52, 62).
2. Bobine selon la revendication 1, caractérisée en ce que les points d'appui de bobinage (9, 10, 55, 56) sont disposés sur un prolongement en forme de nervure (8, 54) de la nervure longitudinale (7, 52) sur la joue (4, 53) du mandrin.
3. Bobine selon la revendication 2, caractérisée en ce que deux points d'appui de bobinage (9, 10) en forme de crochets et mutuellement décalés sont formés d'un seul tenant sur le prolongement (8).
4. Bobine selon la revendication 2 ou 3, caractérisée en ce que les points d'appui de bobinage (9, 10) sont mutuellement décalés dans le sens radial de la bobine.
5. Bobine selon une des revendications 1 à 4, caractérisée en ce que les points d'appui de bobinage (9, 10) sont mutuellement inclinés par leurs axes de bobinage respectifs, par rapport à la face frontale de la joue (4) du mandrin, d'un angle (α, β) tel que le mouvement de bouclage d'une extrémité d'enroulement (11, 14) sur un point d'appui de bobinage ne touche pas l'autre point d'appui de bobinage.
6. Bobine selon une des revendications 3 à 5, caractérisée en ce que les points d'appui de bobinage (9, 10) sont chacun pourvus d'un côté d'une rainure (15) pour la réception et la fixation par sûreté de forme des extrémités d'enroulement.
7. Bobine selon une des revendications 1 à 6, caractérisée en ce que la joue de mandrin (4) portant les points d'appui de bobinage (9, 10) présente une fente radiale (12) à côté de ces points.
8. Bobine selon une des revendications 1, 2 ou 4, caractérisée en ce que les points d'appui de bobinage sous forme de fils (44, 45, 55, 56) sont noyés dans la nervure longitudinale (42) ou dans le prolongement (54).
9. Bobine selon une des revendications 1 à 8, caractérisée en ce que des pièces métalliques sont noyées dans la nervure longitudinale (32).
10. Bobine selon une des revendications 1 à 9, caractérisée en ce que la nervure longitudinale (32, 62) présente au moins une cavité (33) pour la réception de pièces insérées.
EP82106040A 1981-07-10 1982-07-06 Bobine de transformateur Expired EP0069973B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3127341 1981-07-10
DE3127341A DE3127341C2 (de) 1981-07-10 1981-07-10 Transformatorspule

Publications (2)

Publication Number Publication Date
EP0069973A1 EP0069973A1 (fr) 1983-01-19
EP0069973B1 true EP0069973B1 (fr) 1985-11-13

Family

ID=6136635

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82106040A Expired EP0069973B1 (fr) 1981-07-10 1982-07-06 Bobine de transformateur

Country Status (2)

Country Link
EP (1) EP0069973B1 (fr)
DE (2) DE3127341C2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5315280A (en) * 1991-06-21 1994-05-24 Motorola Lighting, Inc. Bobbin for electrical windings
CN111344829B (zh) * 2017-11-21 2022-11-22 三菱电机株式会社 起动器用电磁开关装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1539679B2 (de) * 1966-03-25 1973-09-13 Blaupunkt-Werke Gmbh, 3200 Hildesheim Spulenkörper aus Kunststoff

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1779490U (de) * 1958-03-01 1958-12-18 Standard Elektrik Lorenz Ag Spule mit massekern.
DE1942992U (de) * 1966-03-15 1966-07-28 Licentia Gmbh Spulenkoerper fuer gekapselte spulen.
DE1790110C3 (de) * 1968-09-12 1975-06-05 Siemens Ag, 1000 Berlin Und 8000 Muenchen Anordnung zur Halterung von Anschlu Bläschen für Steckanschlüsse an Kunststoffteilen elektrischer Geräte
DE1919729A1 (de) * 1969-04-18 1970-11-05 Rau Swf Autozubehoer Spulenkoerper fuer Relais,Warnsummer od.dgl.
DE2208457A1 (de) * 1972-02-23 1973-08-30 Loewe Opta Gmbh Wickelkoerper fuer transformatoren
DE2236241A1 (de) * 1972-07-24 1974-02-07 Siemens Ag Spulenkoerper
DE2330301C3 (de) * 1973-06-14 1979-01-18 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren zum Einstellen der Zugentlastung von Spulendrahtenden von Spulen, insbesondere für elektromagnetische Relais
DE2717081A1 (de) * 1977-04-18 1978-11-09 Bbc Brown Boveri & Cie Spulenkoerper
US4166265A (en) * 1978-02-03 1979-08-28 Amp Incorporated Coil bobbins and termination of coil windings

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1539679B2 (de) * 1966-03-25 1973-09-13 Blaupunkt-Werke Gmbh, 3200 Hildesheim Spulenkörper aus Kunststoff

Also Published As

Publication number Publication date
DE3127341A1 (de) 1983-01-27
EP0069973A1 (fr) 1983-01-19
DE3267408D1 (de) 1985-12-19
DE3127341C2 (de) 1983-12-08

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