EP0003747B1 - Flexible insulated multi-core electrical cable - Google Patents
Flexible insulated multi-core electrical cable Download PDFInfo
- Publication number
- EP0003747B1 EP0003747B1 EP19790100160 EP79100160A EP0003747B1 EP 0003747 B1 EP0003747 B1 EP 0003747B1 EP 19790100160 EP19790100160 EP 19790100160 EP 79100160 A EP79100160 A EP 79100160A EP 0003747 B1 EP0003747 B1 EP 0003747B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rubber
- electrical cable
- line
- protective layer
- flexible insulated
- 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
- 229920001971 elastomer Polymers 0.000 claims description 8
- 239000004922 lacquer Substances 0.000 claims description 7
- 229920000180 alkyd Polymers 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 4
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 4
- 239000011241 protective layer Substances 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 235000000396 iron Nutrition 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims 1
- 238000005485 electric heating Methods 0.000 claims 1
- -1 polyethylene Polymers 0.000 claims 1
- 229920000573 polyethylene Polymers 0.000 claims 1
- 239000004753 textile Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000009413 insulation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 238000013005 condensation curing Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229920002681 hypalon Polymers 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/187—Sheaths comprising extruded non-metallic layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
Definitions
- the invention lies in the field of multi-core flexible electrical lines, which are also known under the name “Ksinststoffsch)” or “rubber hose lines”. Such lines are mainly used for the power supply of portable devices, for example also for the power supply of household appliances such as vacuum cleaners, coffee machines, drills.
- a special - eitungstyp has emerged for domestic hot devices, ie devices in which a heated test of the device may come with the coat of INTR ') into contact, as is the case for example with toasters and irons.
- Such lines generally consist of several rubber-insulated wires stranded together, which are surrounded by a network of textile and / or plastic fibers.
- the gusset spaces between the stranded wires are usually filled with gusset fillings, for example with cotton threads (DE-GM 7238145).
- An improved embodiment provides for the use of a rubber jacket as the outer jacket, to which a glossy yarn covering is applied. With such cables, it is felt to be advantageous that the glossy yarn covering has a low coefficient of friction, so that the cable glides easily on textiles, for example (“Der Elektromeister + Deutsches Elektrohandtechnik”, issue 19, 1975, page 1213).
- e3 is known to use both an insulating and a sheath material for rubber hose lines that are used at elevated temperatures, based on ethylene vinyl acetate or on the basis of silicone rubber.
- Single-core electrical lines are also known, on the rubber insulation of which a coating of a condensation-curing lacquer is applied to protect against chemical influences, in particular to improve the resistance to ozone and fuel.
- Such lines are used as ignition lines in motor vehicles and aircraft (DE-PS 935253).
- the use of a lacquer coating is also known for multi-core flexible electrical cables.
- a lubricating varnish is applied to the individual wires to improve the internal friction conditions and thus the flexibility of the line (DE-OS 2528307).
- modified alkyd resin-based enamels which are characterized by heat and heat resistance (DE-PS 953182, DE-PS 1125023).
- the invention is based on the object, multi-core flexible electrical lines that serve to power portable electrical household warmers such as irons and toasters, the previously consisting of a rubber jacket and a lubricious outer protective layer in the form of a glossy yarn braid by a mechanically almost equivalent, the thermal and thus also to replace the electrical safety of the line, which improves as far as possible and is cheaper in terms of production costs.
- the invention provides that the rubber jacket consists of a crosslinked ethylene-vinyl acetate copolymer or a crosslinked chlorosulfonated polyethylene and the lubricious protective layer consists of a thin coating of a heat-resistant lacquer based on alkyd resin.
- An electrical line with a sheath constructed in this way is extremely resistant to the effects of heat during operation of the line, is sufficiently flexible and is characterized by the same good coefficient of friction as lines braided with textile yarn.
- the jacket structure ensures that the ends of the line can also be provided with other usual plugs, the housing of which, for example, made of polyvinyl chloride is applied by injection molding.
- the line 1 consists of the three wires 2 stranded together, each consisting of a fine-stranded copper conductor 3 and the insulation 4 made of a cross-linked ethylene-propylene rubber.
- the jacket 5 made of an extruded ethylene-vinyl acetate copolymer which has been crosslinked after the application is applied to the three strands which are stranded together.
- the heat-resistant lacquer layer 6 made of an alkyd resin-based lacquer, which was applied immediately after the crosslinking of the jacket 5 in a pull-through process using a lacquer solution.
- Such a line was used as a connecting line of an iron. This resulted in excellent sliding properties on the textiles to be treated. Furthermore, after the bottom of the iron, which had a temperature of approximately 240 ° C., was placed on the surface of the line for a period of approximately 30 minutes, no damage to the plastic jacket which would impair the operational safety of the line was found. The value in use of such a line is thus substantially higher than the value in use of the lines hitherto customary for such purposes with a braiding of textile yarns.
Landscapes
- Insulated Conductors (AREA)
- Organic Insulating Materials (AREA)
- Ropes Or Cables (AREA)
- Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
Description
Die Erfindung liegt auf dem Gebiet der mehradrigen flexiblen elektrischen Leitungen, die unter der Bezeichnung «Ksinststoffsch)auch)eitun- gen» oder «Gummischlauchleitungen» bekannt sind. Derartige Leitungen werden vor allem zur Stromversorgung ortsveränderlicher Geräte eingesetzt, beispielsweise auch zur Stromversorgung von Haushaltsgeraen wie Staubsaugern, Kaffeemaschinen, Bohrmaschinen.The invention lies in the field of multi-core flexible electrical lines, which are also known under the name “Ksinststoffsch)” or “rubber hose lines”. Such lines are mainly used for the power supply of portable devices, for example also for the power supply of household appliances such as vacuum cleaners, coffee machines, drills.
Ein besonderer -eitungstyp hat sich für Haushaltwarmgeräte herausgebildet, d.h. für Geräte, bei denen ein erhitzter Test des Gerätes mit dem Mantel der Leitun') in Berührung kommen kann, wie es beispielsweise bei Toastern und Bügeleisen der Fall ist. Derartige Leitungen bestehen in der Regel aus mehreren miteinander verseilten gummiisolierten Adern, die von einem Geflecht aus Textil- und/oder Kunststoffasern umgeben sind. Die Zwickelräume zwischen den verseilten Adern sind in aller Regel mit Zwickelfüllungen ausgetrenst, beispielsweise mit Baumwollfäden (DE-GM 7238145). Eine verbesserte Ausführungsform sieht vor, als äusseren Mantel einen Gummimantel zu verwenden, auf den eine Glanzgarnumhüllung aufgebracht ist. Bei derartigen Leitungen wird als vorteilhaft empfunden, dass die Glanzgarnumhüllung einen niedrigen Reibungskoeffizienten aufweist, so dass die Leitung beispielsweise auf Textilien leicht gleitet («Der Elektromeister + Deutsches Elektrohandwerk», Heft 19,1975, Seite 1213).A special - eitungstyp has emerged for domestic hot devices, ie devices in which a heated test of the device may come with the coat of INTR ') into contact, as is the case for example with toasters and irons. Such lines generally consist of several rubber-insulated wires stranded together, which are surrounded by a network of textile and / or plastic fibers. The gusset spaces between the stranded wires are usually filled with gusset fillings, for example with cotton threads (DE-GM 7238145). An improved embodiment provides for the use of a rubber jacket as the outer jacket, to which a glossy yarn covering is applied. With such cables, it is felt to be advantageous that the glossy yarn covering has a low coefficient of friction, so that the cable glides easily on textiles, for example (“Der Elektromeister + Deutsches Elektrohandwerk”, issue 19, 1975, page 1213).
Im übrigen ist e3 bekannt, für Gummischlauchleitungen, die bei erhöhten Temperaturen eingesetzt werden, sowohl einen Isolier- als auch einen Mantelwerkstoff z.uf der Basis von Äthylenvinylacetat oder auf der Basis von Silikonkautschuk einzusetzen.For the rest, e3 is known to use both an insulating and a sheath material for rubber hose lines that are used at elevated temperatures, based on ethylene vinyl acetate or on the basis of silicone rubber.
Es sind weiterhin einadrige elektrische Leitungen bekannt, auf deren Gummiisolierung zum Schutz gegen chemische Einflüsse, insbesondere zur Verbesserung der Beständigkeit gegen Ozon und Treibstoff, eine Lackschicht aus einem durch Kondensation aushärtenden Lack aufgebracht ist. Derartige Leitungen werden als Zündleitungen in Kraftfahrzeugen und Flugzeugen eingesetzt (DE-PS 935253). Die Verwendung eines Lacküberzuges ist auch für mehradrige flexible elektrische Leitungen bekannt. Hierbei ist auf die einzelnen Adern ein Gleitlack aufgebracht, um die inneren Reibungsverhältnisse und damit die Flexibilität der Leitung zu verbessern (DE-OS 2528307).Single-core electrical lines are also known, on the rubber insulation of which a coating of a condensation-curing lacquer is applied to protect against chemical influences, in particular to improve the resistance to ozone and fuel. Such lines are used as ignition lines in motor vehicles and aircraft (DE-PS 935253). The use of a lacquer coating is also known for multi-core flexible electrical cables. A lubricating varnish is applied to the individual wires to improve the internal friction conditions and thus the flexibility of the line (DE-OS 2528307).
Zur Herstellung lackisolierter elektrischer Drähte, wie sie zu Spulen verarbeitet werden, sind im übrigen modifizierte Lacke auf Alkydharzbasis bekannt, die sich durch Wärme- und Hitzebeständigkeit auszeichnen (DE-PS 953182, DE-PS 1125023).For the production of enamel-insulated electrical wires, such as those processed into coils, modified alkyd resin-based enamels are known which are characterized by heat and heat resistance (DE-PS 953182, DE-PS 1125023).
Der Erfindung liegt die Aufgabe zugrunde, bei mehradrigen flexiblen elektrischen Leitungen, die zur Stromversorgung ortsveränderlicher elektrischer Haushaltwarmgeräte wie beispielsweise Bügeleisen und Toaster dienen, den bisher aus einem Gummimantel und einer gleitfähigen äusseren Schutzschicht in Form einer Glanzgarnbeflechtung bestehenden Mantel durch einen mechanisch annähernd gleichwertigen, die thermische und damit auch die elektrische Sicherheit der Leitung möglichst verbessernden und hinsichtlich der Fertigungkosten günstigeren Mantel zu ersetzen.The invention is based on the object, multi-core flexible electrical lines that serve to power portable electrical household warmers such as irons and toasters, the previously consisting of a rubber jacket and a lubricious outer protective layer in the form of a glossy yarn braid by a mechanically almost equivalent, the thermal and thus also to replace the electrical safety of the line, which improves as far as possible and is cheaper in terms of production costs.
Zur Lösung dieser Aufgabe ist gemäss der Erfindung vorgesehen, dass der Gummimantel aus einem vernetzten Äthylen-Vinylacetat-Copolymer oder einem vernetzten chlorsulfonierten Polyäthylen und die gleitfähige Schutzschicht aus einem dünnen Überzug aus einem wärmebeständigen Lack auf Alkydharzbasis besteht.To achieve this object, the invention provides that the rubber jacket consists of a crosslinked ethylene-vinyl acetate copolymer or a crosslinked chlorosulfonated polyethylene and the lubricious protective layer consists of a thin coating of a heat-resistant lacquer based on alkyd resin.
Eine elektrische Leitung mit einem derart aufgebauten Mantel ist gegenüber von beim Betrieb der Leitung auftretenden Hitzeeinwirkungen äusserst beständig, ist ausreichend flexibel und zeichnet sich durch einen gleich guten Reibungskoeffizienten wie textilgarnbeflochtene Leitungen aus. Im übrigen gewährleistet der Mantelaufbau, dass die Enden der Leitung mit auch sonst üblichen Steckern, deren beispielsweise aus Polyvinylchlorid bestehendes Gehäuse im Spritzgiessverfahren aufgebracht wird, versehen werden können.An electrical line with a sheath constructed in this way is extremely resistant to the effects of heat during operation of the line, is sufficiently flexible and is characterized by the same good coefficient of friction as lines braided with textile yarn. In addition, the jacket structure ensures that the ends of the line can also be provided with other usual plugs, the housing of which, for example, made of polyvinyl chloride is applied by injection molding.
Ein Ausführungsbeispiel der neuen Leitung ist in der Figur dargestellt.An embodiment of the new line is shown in the figure.
Die Leitung 1 besteht aus den drei miteinander verseilten Adern 2, die jeweils aus einem feindrähtigen Kupferleiter 3 und der Isolierung 4 aus einem vernetzten Äthylen-Propylen-Kautschuk bestehen. Auf die drei miteinander verseilten Adern ist der Mantel 5 aus einem extrudierten, nach dem Aufbringen vernetzten Äthylen-Vinylacetat-Copolymer aufgebracht. Darüber befindet sich die wärmebeständige Lackschicht 6 aus einem Lack auf Alkydharzbasis, die unmittelbar im Anschluss an die Vernetzung des Mantels 5 im Durchzugsverfahren durch eine Lacklösung aufgebracht wurde.The line 1 consists of the three
Eine derartige Leitung wurde als Anschlussleitung eines Bügeleisens verwendet. Dabei ergaben sich ausgezeichnete Gleiteigenschaften auf den zu behandelnden Textilien. Weiterhin konnte nach einem Aufsetzen der etwa 240°C heissen Sohle des Bügeleisens über einen Zeitraum von etwa 30 Min. auf die Leitungsoberfläche kein die Betriebssicherheit der Leitung beeinträchtigender Schaden an dem Kunststoffmantel festgestellt werden. Der Gebrauchswert einer solchen Leitung ist somit wesentlich höher als der Gebrauchswert der für derartige Zwecke bisher üblichen Leitungen mit einer Beflechtung aus Textilgarnen.Such a line was used as a connecting line of an iron. This resulted in excellent sliding properties on the textiles to be treated. Furthermore, after the bottom of the iron, which had a temperature of approximately 240 ° C., was placed on the surface of the line for a period of approximately 30 minutes, no damage to the plastic jacket which would impair the operational safety of the line was found. The value in use of such a line is thus substantially higher than the value in use of the lines hitherto customary for such purposes with a braiding of textile yarns.
Claims (1)
- A multi-conductor flexible electric cable for the supply of current to portable domestic electric heating appliances, such as irons and toasters, the stranded, rubber-insulated conductors of which are commonly surrounded by a rubber sheath on which there is applied an outer protective layer which is capable of sliding, characterised in that the rubber sheath (5) consists of a cross-linked ethylene-vinyl acetate copolymer or a cross-linked chlorosulphonated polyethylene and the protective layer (6) consists of a thin coating of a heat-resistant lacquer having an alkyd resin basis.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2807406 | 1978-02-17 | ||
| DE19782807406 DE2807406C3 (en) | 1978-02-17 | 1978-02-17 | Multi-core flexible electrical cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0003747A1 EP0003747A1 (en) | 1979-09-05 |
| EP0003747B1 true EP0003747B1 (en) | 1981-07-15 |
Family
ID=6032548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19790100160 Expired EP0003747B1 (en) | 1978-02-17 | 1979-01-19 | Flexible insulated multi-core electrical cable |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0003747B1 (en) |
| AT (1) | AT363535B (en) |
| DE (1) | DE2807406C3 (en) |
| DK (1) | DK144839C (en) |
| ES (1) | ES477808A1 (en) |
| PT (1) | PT69238A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3209362C3 (en) * | 1982-03-15 | 1993-02-25 | Reinshagen Kabelwerk Gmbh | USE OF A PLASTIC MIXTURE BASED ON POLYVINYL CHLORIDE FOR ELECTRICAL CABLE INSULATION |
| CH664230A5 (en) * | 1984-02-08 | 1988-02-15 | Huber+Suhner Ag | INSULATED, ELECTRICAL CABLE. |
| JPH04240286A (en) * | 1991-01-25 | 1992-08-27 | Novo Nordisk As | How to prevent pitch trouble using heat-resistant lipase |
| SE506975C2 (en) * | 1996-07-12 | 1998-03-09 | Electrolux Ab | Electrical cable with inner and outer insulating casing layers around conductors |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE935253C (en) * | 1944-11-03 | 1955-12-15 | Siemens Ag | Process for the production of ozone-resistant high-voltage cables or lines |
| DE953182C (en) * | 1951-05-31 | 1956-11-29 | Dow Corning | Method of coating wire |
| DE1000076B (en) * | 1953-10-23 | 1957-01-03 | British Insulated Callenders | Process for the production of electrical cables and insulated wires |
| DE1125023B (en) * | 1958-04-09 | 1962-03-08 | Siemens Ag | Heat-resistant insulating layer |
| US3617617A (en) * | 1970-06-12 | 1971-11-02 | Du Pont | Insulated electrical conductor |
| DE7238145U (en) * | 1972-10-18 | 1973-01-18 | Kabelwerke Reinshagen Gmbh | Multi-core, flexible electrical cable |
| DE2528307B2 (en) * | 1975-06-23 | 1978-04-06 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Multi-core, flexible electrical cable |
| GB1583957A (en) * | 1977-03-10 | 1981-02-04 | Bicc Ltd | Electric cables |
-
1978
- 1978-02-17 DE DE19782807406 patent/DE2807406C3/en not_active Expired
-
1979
- 1979-01-19 EP EP19790100160 patent/EP0003747B1/en not_active Expired
- 1979-02-14 DK DK61679A patent/DK144839C/en not_active IP Right Cessation
- 1979-02-15 PT PT6923879A patent/PT69238A/en unknown
- 1979-02-15 AT AT0116079A patent/AT363535B/en not_active IP Right Cessation
- 1979-02-16 ES ES477808A patent/ES477808A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2807406B2 (en) | 1979-12-20 |
| ATA116079A (en) | 1981-01-15 |
| DK144839C (en) | 1982-11-08 |
| AT363535B (en) | 1981-08-10 |
| DE2807406C3 (en) | 1981-08-06 |
| DK61679A (en) | 1979-08-18 |
| EP0003747A1 (en) | 1979-09-05 |
| DK144839B (en) | 1982-06-14 |
| ES477808A1 (en) | 1979-08-01 |
| PT69238A (en) | 1979-03-01 |
| DE2807406A1 (en) | 1979-08-23 |
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