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DE20303938U1 - Heating conductor with sheathing - Google Patents

Heating conductor with sheathing Download PDF

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Publication number
DE20303938U1
DE20303938U1 DE20303938U DE20303938U DE20303938U1 DE 20303938 U1 DE20303938 U1 DE 20303938U1 DE 20303938 U DE20303938 U DE 20303938U DE 20303938 U DE20303938 U DE 20303938U DE 20303938 U1 DE20303938 U1 DE 20303938U1
Authority
DE
Germany
Prior art keywords
heating conductor
conductor according
adhesive
heating
sheathing
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
DE20303938U
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German (de)
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.)
WET Automotive Systems AG
Original Assignee
WET Automotive Systems 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 WET Automotive Systems AG filed Critical WET Automotive Systems AG
Priority to DE20303938U priority Critical patent/DE20303938U1/en
Publication of DE20303938U1 publication Critical patent/DE20303938U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • B29C66/472—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially flat
    • B29C66/4722—Fixing strips to surfaces other than edge faces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B29C65/3424—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding said at least a single wire having the form of a coil spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
    • B29C65/348—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic with a polymer coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/22—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns
    • B29C66/221—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns being in the form of a sinusoidal wave
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/69—General aspects of joining filaments 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/56—Heating or ventilating devices
    • B60N2/5678—Heating or ventilating devices characterised by electrical systems
    • B60N2/5685—Resistance
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/54—Heating elements having the shape of rods or tubes flexible
    • H05B3/56—Heating cables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/727—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being porous, e.g. foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/729—Textile or other fibrous material made from plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/729—Textile or other fibrous material made from plastics
    • B29C66/7294—Non woven mats, e.g. felt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3055—Cars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/58—Upholstery or cushions, e.g. vehicle upholstery or interior padding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/779—Heating equipment
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/009—Heaters using conductive material in contact with opposing surfaces of the resistive element or resistive layer
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/017—Manufacturing methods or apparatus for heaters

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Surface Heating Bodies (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

Heizleiter mit einem metallischen Leiter (2) und einer diesen zumindest teilweise umhüllenden Ummantelung (4) aus Kunststoff, dadurch gekennzeichnet, daß zumindest ein Teil der Ummantelung (4) aus einem thermisch aktivierbaren Kleber (6) besteht.Heating conductor with a metallic conductor (2) and a sheathing (4) made of plastic at least partially enveloping it, characterized in that at least part of the sheathing (4) consists of a thermally activatable adhesive (6).

Figure 00000001
Figure 00000001

Description

Die vorliegende Erfindung betrifft einen Heizleiter nach dem Oberbegriff des Anspruches 1.The present invention relates to a heating conductor according to the preamble of claim 1.

Stand der TechnikState of the art

Aus DE 3703939 ist ein Heizelement mit einem textilen Träger mit einem darauf angeordneten Heizleiter bekannt. Dieses Heizelement wird mit kleinen Aufklebern aus selbstklebender Folie auf Silikonpapier und später an seinem endgültigen Einsatzort fixiert. Nachteilig ist hierbei, daß viele verschiedene Materialien verwendet werden und die Handhabung zeitaufwendig ist.Out DE 3703939 a heating element with a textile carrier with a heating conductor arranged thereon is known. This heating element is fixed with small stickers made of self-adhesive film on silicone paper and later at its final place of use. The disadvantage here is that many different materials are used and handling is time-consuming.

Aus DE 20117812 ist ein Heizwiderstand bekannt, der auf einem Träger aus temperaturaktivierbarem Kleber angeordnet ist. Hier kann nachteilig sein, daß eine Oberfläche mit Klebstoff bedeckt wird, die viel größer ist als eigentlich erforderlich.Out DE 20117812 a heating resistor is known, which is arranged on a carrier made of temperature-activatable adhesive. It can be disadvantageous here that a surface is covered with adhesive that is much larger than is actually required.

Aus EP 1049355 ist ein Heizleiter bekannt, der an einem Gitter aus Schmelzkleber angeordnet ist. Dieses Gebilde wird auf einem Träger durch großflächiges Aufsprühen eines Flüssighaftklebers fixiert. Nachteilig ist hierbei, daß mindestens zwei verschiedene Klebstoffe benutzt werden.Out EP 1049355 a heating conductor is known, which is arranged on a grid of hot melt adhesive. This structure is fixed on a carrier by spraying a liquid pressure sensitive adhesive over a large area. The disadvantage here is that at least two different adhesives are used.

Gegenstand der ErfindungSubject of invention

Die Erfindung betrifft einen Heizleiter mit den Merkmalen des Anspruches 1. Ein Heizleiter nach Anspruch 1 ermöglicht einen Einbau des Heizleiters unter sparsamem Einsatz von Kleber, und ohne daß Personen bei Weiterverarbeitung des Heizleiters mit klebrigen oder flüssigen Substanzen in Kontakt kommen.The invention relates to a heating conductor with the features of claim 1. A heating conductor according to claim 1 enables installation of the heating conductor with economical use of glue, and without people when processing the heating conductor with sticky or liquid substances get in touch.

Die Merkmale der Ansprüche 2 und 3 gewährleisten eine einfache Herstellbarkeit bei gleichzeitig feuersicherem Betrieb des Heizelementes.The features of claims 2 and 3 ensure easy manufacture and fire-safe operation of the heating element.

Die Merkmale der Ansprüche 4 und 5 gewährleisten, daß Bruchstellen, welche in der Kleberummantelung auftreten könnten, nicht zur Verletzung umgebender Teile, insbesondere von Oberflächen berührter Teile führen.The features of claims 4 and 5 ensure that breaks, which could appear in the adhesive coating, not for injury to the surrounding Parts, especially parts in contact with surfaces to lead.

Die Merkmale der Ansprüche 6 und 7 gewährleisten eine ausreichende elektrische Isolation des Heizleiters gegenüber dem Benutzer.The features of claims 6 and 7 ensure adequate electrical insulation of the heating conductor from the User.

Ein Heizleiter nach Anspruch 8 ist besonders dünn und flexibel. Weitere vorteilhafte Ausgestaltungen sind den weiteren Unteransprüchen entnehmbar.A heating conductor according to claim 8 particularly thin and flexible. Further advantageous configurations are the others dependent claims removable.

Figurencharacters

Die nachfolgende Beschreibung behandelt Möglichkeiten zur Ausgestaltung der Erfindung. Diese Ausführungen sind nur beispielhaft zu verstehen und erfolgen unter Bezug auf:The following description deals with possibilities to develop the invention. These statements are only examples to understand and take place with reference to:

1 Querschnitt durch einen Heizleiter 1 Cross section through a heating conductor

2 Draufsicht auf einen Heizleiter auf einem textilen Träger 2 Top view of a heating conductor on a textile carrier

3 Ausschnitt aus einem oberflächennahen Bereich eines zu beheizenden Objektes mit einem Heizleiter im Querschnitt 3 Section of a near-surface area of an object to be heated with a heating conductor in cross-section

4 Längsschnitt durch eine weitere Ausführungsform des erfindungsgemäßen Heizleiters 4 Longitudinal section through a further embodiment of the heating conductor according to the invention

5 Querschnitt durch eine weitere Ausführungsform des Heizleiters 5 Cross section through a further embodiment of the heating conductor

Beschreibung der ErfindungDescription of the invention

1 zeigt einen Heizleiter 1. Dieser besitzt einen metallischen Leiter 2. Dieser ist vorzugsweise aus einem oder mehreren Strängen miteinander verdrillter Metallfilamente hergestellt. 1 shows a heating conductor 1 , This has a metallic conductor 2 , This is preferably made from one or more strands of twisted metal filaments.

Der metallische Leiter 2 ist von einer Ummantelung 4 aus Kunststoff umgeben. Diese Ummantelung 4 ist im vorliegenden Beispiel aus einer Schicht aufgebaut. Diese Schicht besteht im wesentlichen aus einem thermisch aktivierbaren Kleber 6. Unter termisch aktivierbar wird in diesem Dokument verstanden, daß der Kleber oberhalb einer Aktivierungstemperatur klebrig ist und unterhalb dieser Aktivierungstemperatur nicht klebrig ist, aber bestehende Anhaftungen aufrecht erhält. Der Kleber ist vorzugsweise ein Copolyamid. Der Kleber ist unterhalb einer Erweichungstemperatur fest. Er ist jedoch auch im festen Zustand vorzugsweise weich und dehnfähig, um bei einem Bruch der Ummantelung 4 scharten Kanten zu vermeiden.The metallic conductor 2 is of a casing 4 surrounded by plastic. This sheath 4 is made up of one layer in the present example. This layer essentially consists of a thermally activatable adhesive 6 , In this document, termically activatable is understood to mean that the adhesive is sticky above an activation temperature and is not sticky below this activation temperature, but maintains existing adhesions. The adhesive is preferably a copolyamide. The adhesive is solid below a softening temperature. However, it is preferably soft and stretchable even in the solid state, in order to break the sheath 4 to avoid sharp edges.

2 zeigt einen Heizleiter 1 gemäß 1, der wellenförmig auf einem textilen Träger 8 fixiert ist. Diese Fixierung geschieht vorzugsweise durch den Kleber 6 der Ummantelung 4. Falls beabsichtigt ist, den Träger 8 am endgültigen Einsatzort wieder zu entfernen, ist es vorteilhaft, daß der Heizleiter 1 nur partiell, nämlich in Teilbereichen 10, mit dem Träger 8 verbunden ist. Im vorliegenden Ausführungsbeispiel ist dies dadurch erreicht, daß der Träger ein grobmaschiges Textil ist. Dadurch gibt es nur teilweise Berührungen zwischen dem Heizleiter 1 und dem Träger 8. Solche Teilbereiche 10 sind jeweils an den Berührungsstellen von Heizleiter 1 und den Fasern des textilen Trägers 8 angeordnet. 2 shows a heating conductor 1 according to 1 , which is wavy on a textile carrier 8th is fixed. This fixation is preferably done by the adhesive 6 the sheathing 4 , If intended, the carrier 8th at the final place of use, it is advantageous that the heating conductor 1 only partially, namely in some areas 10 , with the carrier 8th connected is. In the present exemplary embodiment, this is achieved in that the carrier is a coarse-mesh textile. As a result, there is only partial contact between the heating conductor 1 and the carrier 8th , Such subareas 10 are at the points of contact of the heating element 1 and the fibers of the textile backing 8th arranged.

Der Träger könnte jedoch auch eine gestanzte oder genoppte Folie oder ein Vlies, insbesondere ein Nadelvlies, sein. Die berührten Teilbereiche wären bei einem Vlies die aus der Oberfläche des Vlieses abstehenden Faserspitzen.However, the carrier could also be a die cut or nubbed film or a fleece, in particular a needle fleece, his. The touched Would be partial areas in the case of a fleece, the protruding parts from the surface of the fleece Fiber tips.

Im Heizbetrieb fließt ein Betriebsstrom von einem Ende des Heizleiters 1 zu seinem anderen Ende. Der Betriebsstrom ist vorteilhafterweise so gewählt, daß die Heiztemperatur unterhalb der Erweichungstemperatur des Kebers 6 liegt. Es kann jedoch auch ein Kleber gewählt werden, der sich bei Heiztemperatur verflüchtigt.In heating operation, an operating current flows from one end of the heating conductor 1 to its other end. The operating current is advantageously chosen so that the heating temperature is below the softening temperature of the boiler 6 lies. However, it is also possible to choose an adhesive that evaporates at the heating temperature.

3 zeigt einen Ausschnitt aus einem oberflächennahen Teil eines beheizten Objektes. An einer Oberfläche 12 beispielsweise eines Fahrzeugsitzes sind ein oder mehrere Heizleiter 1 – im Querschnitt dargestellt – angeordnet. Diese Anordnung kann durch die vorliegende Erfindung sehr flexibel gestaltet sein. Im vorliegenden Fall ist der Heizleiter 1 in ein unter der Oberfläche 12 angeordnetes Schaumpolster integriert, beispielsweise durch Einschäumen. Dabei wird flüssiger Schaum auf die Oberfläche 12 und die Heizleiter 1 aufgebracht. Dadurch erreicht man eine oberflächennahe Einbettung der Heizleiter 1 in das Polster 14 und eine enge, kleberfreie und luftdurchlässige Verbindung zwischen Oberfläche 12 und Polster 14. Der Träger 8 kann mit eingeschäumt oder – wie hier – vorher entfernt sein. 3 shows a section of a near-surface part of a heated object. On a surface 12 For example, a vehicle seat is one or more heating conductors 1 - shown in cross section - arranged. This arrangement can be designed very flexibly by the present invention. In the present case, the heating conductor 1 in a below the surface 12 arranged foam pad integrated, for example by foaming. Liquid foam is applied to the surface 12 and the heating conductor 1 applied. This enables the heating conductors to be embedded close to the surface 1 in the upholstery 14 and a close, adhesive-free and air-permeable connection between the surface 12 and upholstery 14 , The carrier 8th can be foamed in or - as here - removed beforehand.

Die Heizleiter 1 können jedoch auch direkt auf der Oberfläche 12 verlegt sein. Dies kann durch einfaches Auflegen von Oberfläche 12, Heizleiter 1 und Schaumpolster 14 aufeinander bewirkt werden.The heating conductor 1 however, can also be directly on the surface 12 be misplaced. This can be done by simply laying on surface 12 , Heating conductor 1 and foam pads 14 be effected on each other.

In einer nicht dargestellten Ausführungsform könnte die erfindungsgemäße Heizlitze auch eine Ummantelung aus zwei Schichten aufweisen. Eine erste, innere Schicht dient der elektrischen Isolation. Eine zweite, äußere Schicht ist aus Kleber und dient der Haftvermittlung zwischen Heizleiter und seiner Umgebung.In an embodiment not shown, the Heating wire according to the invention also have a casing made of two layers. A first inner layer serves for electrical insulation. A second, outer layer is made of glue and serves to promote adhesion between the heating conductor and its surroundings.

Die Ummantelung könnte auch eine inhomogene Verteilung von klebenden und isolierenden Bestandteilen aufweisen. Die inhomogen verteilten isolierenden Bestandteile ergeben dabei ein isolierendes, unregelmäßiges, den Leiter zu seiner Umgebung beabstandendes Gitter. Die klebenden Bestandteile ergeben ein komplementäres, klebendes, den Leiter an seiner Umgebung fixierendes Gitter.The casing could also have an inhomogeneous distribution of adhesive and insulating components. The inhomogeneous distributed insulating components result in an insulating, irregular that Conductor grid spaced from its surroundings. The adhesive components result in a complementary adhesive grid that fixes the conductor to its surroundings.

Die Ausführungsform des Heizleiters von 4 zeigt einen Entlastungsstrang 20. Er ist aus flexiblem Material, z.B. Polyamid. Der Entlastungs strang 20 kann aus einem Stück oder aus mehreren parallelen, miteinander vereinigten Fasern bestehen.The embodiment of the heating conductor of 4 shows a relief line 20 , It is made of flexible material, e.g. polyamide. The relief strand 20 can consist of one piece or of several parallel, united fibers.

Spiralförmig um den Entlastungsstrang 20 ist ein metallischer Leiter 2 angeordnet. Er wird durch den Entlastungsstrang 20 von mechanischen Lasten freigehalten. Er kann daher ganz für seine Heizfunktion optimiert werden. Der metallische Leiter 2 kann daher je nach Anwendungsfall einen runden oder einen flachen, bandartigen Querschnitt aufweisen.Spiral around the strain relief 20 is a metallic conductor 2 arranged. He is through the relief strand 20 kept free of mechanical loads. It can therefore be fully optimized for its heating function. The metallic conductor 2 can therefore have a round or a flat, ribbon-like cross-section, depending on the application.

Die Anordnung aus metallischem Leiter 2 und Entlastungsstrang 20 ist insgesamt zumindest teilweise von einer klebefähigen Ummantelung 4 wie zuvor beschrieben umgeben.The arrangement of metallic conductor 2 and strain relief 20 overall is at least partially of an adhesive coating 4 surround as previously described.

Die Ausführungsform des Heizleiters von 5 weist einen metallischen Leiter 2 auf, der eine Vielzahl von Leitersträngen 22 besitzt.The embodiment of the heating conductor of 5 has a metallic conductor 2 on of a variety of conductor strands 22 has.

Zumindest ein Teil der Leiterstränge 22, vorzugsweise alle, ist jeweils einzeln für sich von einer elektrischen Isolationshülle 23 ummantelt. Dies verhindert bei Bruch eines einzelnen Leiterstranges 22 eine örtliche Überhitzung an der Bruchstelle. Da der vom beschädigten Leiterstrang geführte elektrische Strom nämlich nicht punktuell an der Bruchstelle auf andere Leiterstränge ausweichen kann, wird die Heizleistung des defekten Leiterstranges über die gesamte Länge des Heizleiters gleichmäßig auf die anderen Leiterstränge verteilt.At least part of the conductor strands 22 , preferably all, is individually individually by an electrical insulation sleeve 23 jacketed. This prevents a single conductor strand from breaking 22 local overheating at the break. Since the electrical current carried by the damaged conductor strand cannot switch to other conductor strands at the break point, the heating power of the defective conductor strand is distributed evenly over the entire length of the heating conductor to the other conductor strands.

Der aus einer Vielzahl von Leitersträngen 22 bestehende metallische Leiter 2 ist insgesamt von einer Ummantelung 4 umgeben. Es wäre aber auch denkbar, den metallischen Leiter 2 in einer Ausführungsform gemäß 4 zu benutzen.The one from a variety of conductor strands 22 existing metallic conductors 2 is overall of a casing 4 surround. But it would also be conceivable to use the metallic conductor 2 in one embodiment according to 4 to use.

Claims (17)

Heizleiter mit einem metallischen Leiter (2) und einer diesen zumindest teilweise umhüllenden Ummantelung (4) aus Kunststoff, dadurch ge kennzeichnet, daß zumindest ein Teil der Ummantelung (4) aus einem thermisch aktivierbaren Kleber (6) besteht.Heating conductor with a metallic conductor ( 2 ) and a sheath that at least partially surrounds this ( 4 ) Of plastic, characterized in that at least a part of the casing ( 4 ) from a thermally activated adhesive ( 6 ) consists. Heizleiter nach Anspruch 1, dadurch gekennzeichnet, daß der Kleber (6) ein Copolyamid ist.Heating conductor according to claim 1, characterized in that the adhesive ( 6 ) is a copolyamide. Heizleiter nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß der Kleber unterhalb einer Erweichungstemperatur von unter 100 °C fest ist und/oder eine Schmelztemperatur zwischen 80 °C und 200 °C, vorzugsweise zwischen 130 °C und 180 °C, vorzugsweise zwischen 145 °C und 160 °C, aufweist.Heating conductor according to one of the preceding claims, characterized characterized in that the Glue is solid below a softening temperature below 100 ° C and / or a melting temperature between 80 ° C and 200 ° C, preferably between 130 ° C and 180 ° C, preferably between 145 ° C and 160 ° C, having. Heizleiter nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die Dicke der Ummantelung (4) im Durchschnitt maximal 0,2 mm, vorzugsweise maximal 0,1 mm, beträgt.Heating conductor according to one of the preceding claims, characterized in that the thickness of the sheathing ( 4 ) on average a maximum of 0.2 mm, preferably a maximum of 0.1 mm. Heizleiter nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß der Kleber (6) auch bei normalen Umgebungstemperaturen, insbesondere zwischen – 20 °C und + 50 °C, vorzugsweise zwischen + 20 °C und + 25 °C, eine Dehnung bei Bruch von mehr als 100 %, vorzugsweise mehr als 200 %, vorzugsweise mehr als 400 %, aufweist.Heating conductor according to one of the preceding claims, characterized in that the adhesive ( 6 ) even at normal ambient temperatures, in particular between - 20 ° C and + 50 ° C, preferably between + 20 ° C and + 25 ° C, an elongation at break of more than 100%, preferably more than 200%, preferably more than 400 %, having. Heizleiter nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß der Kleber (6) ein elektrischer Isolator ist, der der Ummantelung (4) des Leiters (2) vorzugsweise eine Durchschlagfestigkeit von mindestens 12 V verleiht, insbesondere mindestens 18 V, insbesondere mindestens 100 V, insbesondere mindestens 1000 V.Heating conductor according to one of the preceding claims, characterized in that the adhesive ( 6 ) is an electrical insulator that 4 ) of the leader ( 2 ) preferably gives a dielectric strength of at least 12 V, in particular at least 18 V, in particular at least 100 V, in particular at least 1000 V. Heizleiter nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die Ummantelung (4) Isolationsmaterial und Kleber (6) aufweist.Heating conductor according to one of the preceding claims, characterized in that the sheathing ( 4 ) Insulation material and glue ( 6 ) having. Heizleiter nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die Ummantelung (4) aus einer einzigen Schicht gebildet ist.Heating conductor according to one of the preceding claims, characterized in that the sheathing ( 4 ) is formed from a single layer. Heizleiter nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß der Kleber wiederholt aktivierbar ist.Heating conductor according to one of the preceding claims, characterized characterized in that the Glue can be activated repeatedly. Heizleiter nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß er an einem flächigen Träger (8), insbesondere aus Vlies, Textil, Schaum und/oder gelochter oder genoppter Folie angeordnet ist.Heating conductor according to one of the preceding Claims, characterized in that it is attached to a flat support ( 8th ), in particular made of fleece, textile, foam and / or perforated or nubbed film. Heizleiter nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß der Heizleiter (1) mittels des ihn umhüllenden Klebers (6), welcher insbesondere im wesentlichen aus Polyurethan gebildet ist, an dem Träger (8), welcher insbesondere im wesentlichen aus Polyurethan gebildet ist, befestigt ist.Heating conductor according to one of the preceding claims, characterized in that the heating conductor ( 1 ) by means of the adhesive enveloping it ( 6 ), which in particular is essentially made of polyurethane, on the carrier ( 8th ), which in particular is essentially made of polyurethane, is attached. Heizleiter nach einem der Ansprüche 10 oder 11, dadurch gekennzeichnet, daß der Träger (8) eine bei Normaltemperatur, insbesondere zwischen – 20 °C und + 50 °C, vorzugsweise zwischen + 20 °C und + 25 °C, klebende Oberfläche aufweist.Heating conductor according to one of claims 10 or 11, characterized in that the carrier ( 8th ) has a surface sticking at normal temperature, in particular between - 20 ° C and + 50 ° C, preferably between + 20 ° C and + 25 ° C. Heizleiter nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß der Kleber sich bei Erwärmung über eine Verflüchtigungstemperatur hinaus und / oder über eine bestimmte Zeitdauer zumindest weitgehend verflüchtigt.Heating conductor according to one of the preceding claims, characterized characterized in that the Adhesive when heated over a volatilization beyond and / or beyond at least largely evaporated for a certain period of time. Heizleiter nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß der Heizleiter (1) unter der Oberfläche (12) eines von einem Benutzer berührten Bauteiles, insbesondere eines Fahrzeugteiles wie Fahrzeugsitz oder Lenkrad, angeordnet ist.Heating conductor according to one of the preceding claims, characterized in that the heating conductor ( 1 ) under the surface ( 12 ) a component touched by a user, in particular a vehicle part such as a vehicle seat or steering wheel, is arranged. Heizleiter nach Anspruch 14, dadurch gekennzeichnet, daß der Heizleiter (1) in oberflächennahe Bereiche eines unter der berührten Oberfläche des Bauteiles angeordneten Schaumpolsters (14) angeordnet und insbesondere mit eingeschäumt ist.Heating conductor according to claim 14, characterized in that the heating conductor ( 1 ) in areas close to the surface of a foam cushion arranged under the touched surface of the component ( 14 ) is arranged and foamed in particular. Heizleiter nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß er einen Entlastungsstrang (20) – insbesondere mittig längs seiner Längsachse – zur Aufnahme mechanischer Zug-und/oder Biegelasten aufweist, und daß der metallische Leiter (2) mäandernd – insbesondere den Entlastungsstrang (20) spiralförmig umwindend – am Entlastungsstrang (20) angeordnet ist.Heating conductor according to one of the preceding claims, characterized in that it has a relief line ( 20 ) - in particular centrally along its longitudinal axis - for receiving mechanical tensile and / or bending loads, and that the metallic conductor ( 2 ) meandering - especially the relief line ( 20 ) spiraling around - on the relief line ( 20 ) is arranged. Heizleiter nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß der metallische Leiter (2) mehrere – insbesondere parallel zu einander geschaltete – L eiterstränge (22) aufweist, weiche gegeneinander elektrisch isoliert sind.Heating conductor according to one of the preceding claims, characterized in that the metallic conductor ( 2 ) several conductor strings - in particular connected in parallel to each other ( 22 ) which are electrically insulated from one another.
DE20303938U 2002-08-08 2003-03-11 Heating conductor with sheathing Expired - Lifetime DE20303938U1 (en)

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