DE956255C - Enclosure, which is made of plastic film and is closed on all sides, of a ring body, in particular an insulating cover of an electrical coil, for example a counter voltage coil - Google Patents
Enclosure, which is made of plastic film and is closed on all sides, of a ring body, in particular an insulating cover of an electrical coil, for example a counter voltage coilInfo
- Publication number
- DE956255C DE956255C DES29793A DES0029793A DE956255C DE 956255 C DE956255 C DE 956255C DE S29793 A DES29793 A DE S29793A DE S0029793 A DES0029793 A DE S0029793A DE 956255 C DE956255 C DE 956255C
- Authority
- DE
- Germany
- Prior art keywords
- coil
- hose
- ring body
- diameter
- 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
Links
- 239000002985 plastic film Substances 0.000 title claims description 4
- 229920006255 plastic film Polymers 0.000 title claims description 4
- 238000000034 method Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims 3
- 238000005253 cladding Methods 0.000 claims 2
- 230000007704 transition Effects 0.000 claims 2
- 239000004922 lacquer Substances 0.000 claims 1
- 229920001169 thermoplastic Polymers 0.000 claims 1
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- H01F41/12—Insulating of windings
- H01F41/125—Other insulating structures; Insulating between coil and core, between different winding sections, around the coil
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulating Of Coils (AREA)
Description
Aus Kunststoffolie bestehende, allseitig geschlossene Umhüllung eines Ringkörpers, insbesondere Isolierhülle einer elektrischen Spule, beispielsweise einer Zählerspannungsspule Die Erfindung bezieht sich auf eine aus Kunststoffolie bestehende allseitige Umhüllung eines Ringkörpers. Der Ringkörper kann beispielsweise der Eisenkern eines Stromwandlers oder auch eine elektrische Spule sein. Die bekannten Umhüllungen derartiger Ringkörper setzen sich, aus mehreren Einzelteilen zusammen, die miteinander verklebt oder verschweißt werden. Die Übergangsstellen können auch mit Isolierstoff ausgegossen sein.. In allen Fällen sind mehrere Überlappungs- bzw. Klebestellen erforderlich, Jede dieserÜberlappungs-bzw. Klebestellen beeinträchtigt die mechanische und elektrische: Festigkeit der Umhüllung. Durch die Erfindung soll die Zahl der Klebe-bzw. Schweißstellen der Umhüllung auf ein Mindestmaß eingeschränkt werden. Erfindungsgemäß besteht die Umhüllung aus einem einzigen Stück Schlauch aus thermoplastischem Kunststoff, dessen Länge etwa dem Umfang des Ringkörpers in axialer Richtung entspricht, dessen etwa mittlerer Teil die Verkleidung der inneren Ringkörperfiäche und der Stirnfiächen des Ringkörpers bildet und dessen Enden durch Umstülpen und. Überlappen die Verkleidung der äußeren Ringkörperfiäche-bilden und miteinander verklebt oder verschweißt sind. Bei der Herstellung einer solchen Umhüllung kann en.tweder so verfahren werden, daß die beiden Enden des Schlauches, dessen Durchmesser etwa der Bohrung des Ringkörpers entspricht, eventuell unter Wärmeanwendung, auf denn Außendurchmesser des Ringkörpers mittels eines Werkzeugeis aufgeweitet und dann über die Außenfläche des Ringkörpers gestülpt werden oder daß der Schlauch auf seine ganze Länge aufgeweitet, dann etwa in der Mitte auf einen Durchmesser eingeschrumpft wird., der dem Innend.urchm-esser des Ringkörpers entspricht, und schließlich die beiden Enden des Schlauches über die Auß,enfläche des Ringkörpers gestülpt werden..Enclosure of a plastic film that is closed on all sides Annular body, in particular the insulating sleeve of an electrical coil, for example a meter voltage coil The invention relates to one made of plastic film existing all-round covering of an annular body. The ring body can, for example be the iron core of a current transformer or an electrical coil. The known Coverings of such ring bodies are composed of several individual parts, which are glued or welded together. The crossing points can also be filled with insulating material. In all cases, several overlapping or Gluing points required, each of these overlapping or. Adhesive joints impaired mechanical and electrical: strength of the envelope. The invention aims to the number of adhesive or. Welding points of the envelope restricted to a minimum will. According to the invention, the sheath consists of a single piece of hose Made of thermoplastic material, the length of which is approximately the circumference of the ring body in corresponds to the axial direction, the approximately central part of which is the lining of the inner Ring body surface and the end surface of the ring body forms and its ends through Turn inside out and. Overlap the lining of the outer ring body surface and are glued or welded together. When making such a cover can either proceed in such a way that the two ends of the hose whose diameter corresponds approximately to the bore of the ring body, possibly below Heat application, on the outer diameter of the ring body by means of a tool widened and then slipped over the outer surface of the annular body or that the hose widened to its entire length, then about in the middle to one Is shrunk in diameter, which corresponds to the inner diameter of the ring body, and finally the two ends of the hose over the outer surface of the ring body to be put on.
Die Erfindung soll an. Hand des in Fig. i und 2 dargestellten Ausführungsbeispiels näher erläutert werden.The invention is intended to. Hand of the embodiment shown in Figs are explained in more detail.
Fig. i zeigt einen Abschnitt des Umhüllungsverfahrens bei einer Zählerspannungsspule, Fig. 2 die fertig isolierte Spule.Fig. I shows a portion of the wrapping process for a meter voltage coil, Fig. 2 shows the fully insulated coil.
Der aus einer Polyvinylchloridfolie od. dgl. bestehende Schlauch i, der, wie in Fig. i gestrichelt dargestellt, bei Beginn des Umhüllungsverfahrens eine Länge hat, die etwa dem Umfang der zu isolierenden. Spule in axialer Richtung entspricht, ist an den beiden Emden 2 und 3 mittels eines Werkzeuges unterWärmeanwendungau.fgeweitet. Zwecks besserer Verarbeitung wird- hierfür zweckmäßig ein. weichgemachter Kunststoff verwendet. Der Schlauch hat an diesen Stellen eine schwach konische Form mit nach außen zunehmendem Durchmesser. An: der nicht aufgeweiteten Stelle 4, die den Wickelraum für die Spule bildet, hat der Schlauch einen. Durchmesser, der etwa denn Innendurchmesser @ der Spule entspricht, während der Durchmesser an den beiden aufgewerteten. Stellen etwa dem Außendurchmesser der Spule entspricht. Bei dem dargestellten Ausführungsbeispiel handelt es' sich um eine kernlose Spule. Zur Versteifung der inneren Fläche der Ioslierhülle ist eine Hartpapierhülse 5 eingeschoben. Wird die Spule auf einen .in. derselben verbleibenden Kern gewickelt, dann kann auf diese Versteifungshülse verzichtet werden. In die beiden aufgeweiteten Enden :2 und 3 des Schlauches sind Dorne 6 und 7 mit konischen Stirnflächen, 8 und g eingeschoben, die die gleiche Form haben wie die Stirnflächen leer zu wickelnden Spule io. Nach dem Wickeln der Spule wird die oberste Drahtlage mittels eines Lackauftrages verfestigt. Die Verfestigung kann auch durch einen aufgeschrumpften Folienstreifen erreicht werden. Die, beiden Schlauchenden 2 und 3 werden über die Spule so umgestülpt, daß sich, wie in Fig. 2 dargestellt, ihre Enden überlappen. Um ein straffes Anliegen der Hülle an der Spule zu, erzielen, werden die umgestülpten Teile des Schlauches zweckmäßig durch Wärmeeinwirkung aufge@ schrumpft. An der überlappungsstelle, an der die Spulenenden herausgeführt werden können., werdeen die Schlauchenden entweder verklebt oder verschweißt. Die durch die konische Form deT Spulen: stirnen gebildeten Einsenkungen i i und 12 können unter Umständen. mixt Isolierstoff ausgegossen werden, wobei dann zweckmäßig die Versteifungshülse entsprechend zu verlängern, -ist. Die Schlauchform nach Fig. i kann auch dadurch erzielt werden, daß man zunächst den. Schlauch auf seine ganze Länge aufweitet und dann, an der Stelle 4 . einschrumpft, wobei durch Druckanwendung mit einer zweiteiligen Form die gewünschte Spulenform gebildet werden kann. Im übrigen würde genau so verfahren, werden wie bei dein obengenannten Ausführungsbeispiel.The hose i, which consists of a polyvinyl chloride film or the like and which, as shown in dashed lines in FIG. Coil corresponds in the axial direction, is widened on the two Emden 2 and 3 by means of a tool under the application of heat. For better processing, a. plasticized plastic used. At these points the hose has a slightly conical shape with an outwardly increasing diameter. At: the unexpanded point 4, which forms the winding space for the coil, the hose has a. Diameter, which roughly corresponds to the inside diameter @ of the coil, while the diameter is upgraded on the two. Make approximately the same as the outside diameter of the coil. The illustrated embodiment is a coreless coil. A hard paper sleeve 5 is inserted to stiffen the inner surface of the insulating cover. If the bobbin is set to an .in. the same remaining core is wound, then this stiffening sleeve can be dispensed with. In the two widened ends: 2 and 3 of the hose, mandrels 6 and 7 with conical end faces, 8 and g are inserted, which have the same shape as the end faces of the empty coil to be wound io. After the coil has been wound, the top wire layer is solidified by means of an application of varnish. The consolidation can also be achieved by a shrunk-on film strip. The two hose ends 2 and 3 are turned inside out over the spool so that, as shown in FIG. 2, their ends overlap. To a tight fitting of the casing at the coil to achieve the everted parts of the hose are advantageously shrinks due to heat up @. At the point of overlap where the coil ends can be brought out, the hose ends are either glued or welded. The depressions ii and 12 formed by the conical shape of the coils: mixes insulating material to be poured out, in which case the stiffening sleeve should then be extended accordingly. The tube shape according to Fig. I can also be achieved by first the. The hose expands over its entire length and then, at point 4. shrinks, whereby the desired coil shape can be formed by applying pressure with a two-part mold. Otherwise, exactly the same procedure would be used as in your above-mentioned exemplary embodiment.
Die Erfindung bietet folgende Vorteile: Da die fertige Umhüllung nur noch eine überlappungsstelle aufweist, besitzt sie ein Optimum an elektrischer und mechanischer Festigkeit. Bei Verwendung einer entsprechenden Folie kann eine völlig feuchtigkeitsdichte Umhüllung erzielt werden. Wird sie für eine elektrische Spule verwendet, dann braucht die Isolierung der Drähte nicht mehr feuchtigkeitsbeständig zu sein und kann somit unter Umständen erheblich verbilligt «-.erden.The invention offers the following advantages: Since the finished casing only still has an overlap point, it has an optimum of electrical and mechanical strength. When using an appropriate film, one can completely moisture-proof envelope can be achieved. Will she use an electric coil is used, then the insulation of the wires no longer needs to be moisture-proof to be and can therefore be considerably cheaper under certain circumstances.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES29793A DE956255C (en) | 1952-08-17 | 1952-08-17 | Enclosure, which is made of plastic film and is closed on all sides, of a ring body, in particular an insulating cover of an electrical coil, for example a counter voltage coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES29793A DE956255C (en) | 1952-08-17 | 1952-08-17 | Enclosure, which is made of plastic film and is closed on all sides, of a ring body, in particular an insulating cover of an electrical coil, for example a counter voltage coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE956255C true DE956255C (en) | 1957-01-17 |
Family
ID=7479911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES29793A Expired DE956255C (en) | 1952-08-17 | 1952-08-17 | Enclosure, which is made of plastic film and is closed on all sides, of a ring body, in particular an insulating cover of an electrical coil, for example a counter voltage coil |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE956255C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1089323B (en) * | 1956-05-30 | 1960-09-15 | Delore Sa Geoffroy | Device for the continuous production of rolls of wrapping material wrapped in pre-folded wrapping paper |
| DE1128548B (en) * | 1960-05-27 | 1962-04-26 | Telefunken Patent | Small transformer with iron core and disc winding, in particular mains transformer |
| DE1137131B (en) * | 1960-10-13 | 1962-09-27 | Siemens Ag | Small surge-proof transformer |
| DE1147684B (en) * | 1959-01-13 | 1963-04-25 | Transform Roentgen Matern Veb | Converter or transformer with cast resin insulation |
| DE1155199B (en) * | 1959-07-28 | 1963-10-03 | Controls Co Of America | Device for encapsulating electrical coils located on flange coil bodies |
| WO1989002649A1 (en) * | 1987-09-08 | 1989-03-23 | Austero Covino | Apparatus for wrapping demagnetizing coils with insulating tape |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE523822C (en) * | 1931-04-28 | Siemens & Halske Akt Ges | Isolation of metallic winding supports by means of a rubber cover | |
| DE579975C (en) * | 1927-02-23 | 1933-07-03 | Aeg | Coil with protective cover for counters and measuring instruments |
| US2553362A (en) * | 1946-05-28 | 1951-05-15 | Sprague Electric Co | Electrical insulation |
| DE832920C (en) * | 1948-10-02 | 1952-03-03 | Siemens & Halske A G | High frequency coils, especially for variometers, and processes for their manufacture |
-
1952
- 1952-08-17 DE DES29793A patent/DE956255C/en not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE523822C (en) * | 1931-04-28 | Siemens & Halske Akt Ges | Isolation of metallic winding supports by means of a rubber cover | |
| DE579975C (en) * | 1927-02-23 | 1933-07-03 | Aeg | Coil with protective cover for counters and measuring instruments |
| US2553362A (en) * | 1946-05-28 | 1951-05-15 | Sprague Electric Co | Electrical insulation |
| DE832920C (en) * | 1948-10-02 | 1952-03-03 | Siemens & Halske A G | High frequency coils, especially for variometers, and processes for their manufacture |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1089323B (en) * | 1956-05-30 | 1960-09-15 | Delore Sa Geoffroy | Device for the continuous production of rolls of wrapping material wrapped in pre-folded wrapping paper |
| DE1147684B (en) * | 1959-01-13 | 1963-04-25 | Transform Roentgen Matern Veb | Converter or transformer with cast resin insulation |
| DE1155199B (en) * | 1959-07-28 | 1963-10-03 | Controls Co Of America | Device for encapsulating electrical coils located on flange coil bodies |
| DE1128548B (en) * | 1960-05-27 | 1962-04-26 | Telefunken Patent | Small transformer with iron core and disc winding, in particular mains transformer |
| DE1137131B (en) * | 1960-10-13 | 1962-09-27 | Siemens Ag | Small surge-proof transformer |
| WO1989002649A1 (en) * | 1987-09-08 | 1989-03-23 | Austero Covino | Apparatus for wrapping demagnetizing coils with insulating tape |
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