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EP0124174B1 - Electrical heating element to be incorporated in an inner layer of a garment or of an accessory, to be applied to a part of the human body - Google Patents

Electrical heating element to be incorporated in an inner layer of a garment or of an accessory, to be applied to a part of the human body Download PDF

Info

Publication number
EP0124174B1
EP0124174B1 EP84200575A EP84200575A EP0124174B1 EP 0124174 B1 EP0124174 B1 EP 0124174B1 EP 84200575 A EP84200575 A EP 84200575A EP 84200575 A EP84200575 A EP 84200575A EP 0124174 B1 EP0124174 B1 EP 0124174B1
Authority
EP
European Patent Office
Prior art keywords
heating element
wire
sheet
element according
copper wire
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
EP84200575A
Other languages
German (de)
French (fr)
Other versions
EP0124174A1 (en
Inventor
Simon Arieh
Guy Courvoisier
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.)
Lange International SA
Original Assignee
Lange International SA
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 Lange International SA filed Critical Lange International SA
Priority to AT84200575T priority Critical patent/ATE26056T1/en
Publication of EP0124174A1 publication Critical patent/EP0124174A1/en
Application granted granted Critical
Publication of EP0124174B1 publication Critical patent/EP0124174B1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B3/00—Footwear characterised by the shape or the use
    • A43B3/34—Footwear characterised by the shape or the use with electrical or electronic arrangements
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B3/00—Footwear characterised by the shape or the use
    • A43B3/34—Footwear characterised by the shape or the use with electrical or electronic arrangements
    • A43B3/35—Footwear characterised by the shape or the use with electrical or electronic arrangements with electric heating arrangements
    • A43B3/355—Footwear characterised by the shape or the use with electrical or electronic arrangements with electric heating arrangements heated by an electric current from an external source, e.g. car batteries
    • 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
    • H05B2203/014—Heaters using resistive wires or cables not provided for in H05B3/54
    • 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
    • H05B2203/036—Heaters specially adapted for garment heating

Definitions

  • the present invention relates to an electric heating body intended to be incorporated into an interior lining of a clothing element or an accessory intended to be applied against a part of the human body.
  • thermoforming an inner lining of thermoformable material by means an electric heating body incorporated into said lining, this lining and the part of the human body concerned being reciprocally pressurized after having brought the lining to its thermoforming temperature by means of the heating body.
  • the heating body used is obtained by chemical attack on a polyester support coated with an aluminum layer, so as to form a meander capable of constituting a heating body of sufficient length.
  • the main object of the present invention is to produce a heating body resistant to repeated bending stresses.
  • the electric heater according to the invention consists of a ductile metal wire coated with an insulating varnish and fixed over its entire length on at least one metal sheet.
  • the very thin wire for example made of copper, supports any bending and even repeated folds, because its diameter is always relatively small compared to the radius of curvature of the bending or of the fold. Its small diameter associated with the ductile nature of the metal used means that the heating body even supports wrinkling.
  • the metal support of the wire reduces the temperature gradient to a negligible value and ensures an almost uniform distribution of heat.
  • the wire being fixed over its entire length on its metal support, it is in contact at all points with this support, so that it does not form a hot spot.
  • the heating element according to the invention can be used both for thermoforming an inner lining of thermoformable material and as a heating element intended to slightly heat pieces of clothing such as shoes or gloves.
  • a copper wire with a diameter of 0.1 mm, coated with an enamel insulating varnish withstanding a temperature higher than the temperature to which the heating body is brought during its use, as found commercially, is fixed to the adhesive or self-adhesive side of an aluminum sheet with a thickness of 0.02 mm.
  • a thin sheet of insulating material for example MYLAR (registered trademark) which covers the wire and helps to keep it in place, especially preventing its tearing by friction.
  • the two ends of the wire are connected to wires or cables for power supply.
  • the wire being insulated, it is without, other possible to have crossings.
  • the wire is arranged in meanders, for example in the following way: the wire is placed in an approximately rectilinear manner, without tension, between two combs, then we cross the combs, that is to say that we pass the teeth from one of the combs on the other side of the teeth of the other comb by drawing the wire. This then forms a meander between the two combs and it only remains to press it on the adhesive face of the aluminum sheet for fixing on this sheet.
  • a length of copper wire of 2 meters is sufficient.
  • the wire occupies very little surface and it is easy to dose the heating by varying the length of wire per unit of surface.
  • the surface of the aluminum foil can be continuous or perforated, for example if it is desired to avoid the heating of certain parts.
  • the wire may consist of another ductile metal, for example nickel silver.
  • the copper wire may have a diameter of 0.1 to 0.4 mm, depending on use and the metal sheet may have a thickness ranging from 0.02 to 1 mm.
  • the metal wire will have a diameter between 0.05 and 2.5 mm, depending on the nature of the metal and the use of the heating body.
  • the metal sheet can have any shape, in particular a shape adapted to the part of the lining to be heated, respectively thermoformed, for example one of the shapes described in patent EP 0 004 829.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Surface Heating Bodies (AREA)
  • Resistance Heating (AREA)
  • Outerwear In General, And Traditional Japanese Garments (AREA)

Abstract

An electrical heating element intended to be incorporated in an inner lining of an item of clothing or accessory intended to be placed against a part of the human body, in which the heating element is formed by a ductile metal wire coated with an insulating lacquer, for example a commercially available insulated copper wire, fixed over its entire length to at least one metal sheet, preferably a sheet of aluminium having an adhesive side to which the wire is adhered. The wire can be disposed in meanders. It may be covered by an insulating sheet, and the metal sheet may have cut-outs therein.

Description

La présente invention a pour objet un corps de chauffe électrique destiné à être incorporé à une garniture intérieure d'un élément d'habillement ou d'un accessoire destiné à être appliqué contre une partie du corps humain.The present invention relates to an electric heating body intended to be incorporated into an interior lining of a clothing element or an accessory intended to be applied against a part of the human body.

Dans le brevet EP 0 004 829 est décrit un procédé pour obtenir un élément d'habillement ou accessoire, en particulier une chaussure de ski, étroitement adapté à une partie du corps humain, par thermoformage d'une garniture intérieure en matière thermoformable, au moyen d'un corps de chauffe électrique incorporé à ladite garniture, cette garniture et la partie du corps humain concernée étant mises réciproquement sous pression après avoir amené la garniture à sa température de thermoformage au moyen du corps de chauffe. Le corps de chauffe utilisé est obtenu par attaque chimique d'un support en polyester revêtu d'une couche d'aluminium, de manière à former un méandre susceptible de constituer un corps de chauffe de longueur suffisante. Il s'est toutefois avéré à l'usage que si ce corps de chauffe est chauffé plusieurs fois le polyester durcit et provoque des cassures de l'aluminium, c'est-à-dire une coupure du corps de chauffe qui devient alors inutilisable. De toute façon l'aluminium mince se comporte mal à la fatigue et se casse ou se déchire rapidement lorsqu'il est sollicité en flexion de façon répétée, comme c'est le cas, par exemple, dans une garniture intérieure de chaussure de ski. Il dès lors plus possible de procéder à un nouveau thermoformage, par exemple pour réadapter une chaussure de ski aux pieds de l'utilisateur, ni d'utiliser le corps de chauffe comme moyen de chauffage de l'élément d'habillement, par exemple une chaussure ou un gant.In patent EP 0 004 829 a method is described for obtaining an item of clothing or accessory, in particular a ski boot, closely adapted to a part of the human body, by thermoforming an inner lining of thermoformable material, by means an electric heating body incorporated into said lining, this lining and the part of the human body concerned being reciprocally pressurized after having brought the lining to its thermoforming temperature by means of the heating body. The heating body used is obtained by chemical attack on a polyester support coated with an aluminum layer, so as to form a meander capable of constituting a heating body of sufficient length. However, it has been found in use that if this heating body is heated several times the polyester hardens and causes breaks in the aluminum, that is to say a cut in the heating body which then becomes unusable. In any case, thin aluminum behaves badly with fatigue and breaks or tears quickly when it is repeatedly flexed, as is the case, for example, in an inner lining of a ski boot. It is therefore no longer possible to carry out a new thermoforming, for example to readjust a ski boot to the feet of the user, or to use the heating body as a means of heating the clothing element, for example a shoe or glove.

La présente invention a principalement pour but de réaliser un corps de chauffe résistant à des sollicitations répétées en flexion.The main object of the present invention is to produce a heating body resistant to repeated bending stresses.

Le corps de chauffe électrique selon l'invention est constitué d'un fil en métal ductile revêtu d'un vernis isolant et fixé sur toute sa longueur sur au moins une feuille métallique.The electric heater according to the invention consists of a ductile metal wire coated with an insulating varnish and fixed over its entire length on at least one metal sheet.

Le fil, très mince, par exemple en cuivre, supporte toute flexion et même des plis répétés, car son diamètre est toujours relativement faible par rapport au rayon de courbure de la flexion ou du pli. Son faible diamètre associé au caractère ductile du métal utilisé fait que le corps de chauffe supporte même un froissement.The very thin wire, for example made of copper, supports any bending and even repeated folds, because its diameter is always relatively small compared to the radius of curvature of the bending or of the fold. Its small diameter associated with the ductile nature of the metal used means that the heating body even supports wrinkling.

D'autre part, le support métallique du fil réduit le gradient de température à une valeur négligeable et assure une répartition quasi uniforme de la chaleur. Le fil étant fixé sur toute sa longueur sur son support métallique, il est en contact en tout point avec ce support, de telle sorte qu'il ne se forme pas de point chaud.On the other hand, the metal support of the wire reduces the temperature gradient to a negligible value and ensures an almost uniform distribution of heat. The wire being fixed over its entire length on its metal support, it is in contact at all points with this support, so that it does not form a hot spot.

Le corps de chauffe selon l'invention peut être utilisé aussi bien, pour le thermoformage d'une garniture intérieure en matière thermoformable que comme élément de chauffage destiné à chauffer légèrement des pièces d'habillement telles que des chaussures ou des gants.The heating element according to the invention can be used both for thermoforming an inner lining of thermoformable material and as a heating element intended to slightly heat pieces of clothing such as shoes or gloves.

Selon une forme d'exécution de l'invention, un fil de cuivre d'un diamètre de 0,1 mm, revêtu d'un vernis isolant émail supportant une température supérieure à la température à laquelle le corps de chauffe est porté lors de son utilisation, tel qu'on le trouve dans le commerce, est fixé sur la face adhésive ou autocollante d'une feuille d'aluminium d'une épaisseur de 0,02 mm. Sur cette même face adhésive est fixée ensuite une mince feuille de matière isolante, par exemple du MYLAR (marque déposée), qui recouvre le fil et contribue à le maintenir en place, en empêchant surtout son arrachement par frottement. Les deux extrémités du fil sont reliées à des fils ou câbles d'alimentation électrique. Le fil étant isolé, il est sans, autre possible d'avoir des croisements.According to one embodiment of the invention, a copper wire with a diameter of 0.1 mm, coated with an enamel insulating varnish withstanding a temperature higher than the temperature to which the heating body is brought during its use, as found commercially, is fixed to the adhesive or self-adhesive side of an aluminum sheet with a thickness of 0.02 mm. On this same adhesive face is then fixed a thin sheet of insulating material, for example MYLAR (registered trademark), which covers the wire and helps to keep it in place, especially preventing its tearing by friction. The two ends of the wire are connected to wires or cables for power supply. The wire being insulated, it is without, other possible to have crossings.

Le fil est disposé en méandres, par exemple de la manière suivante: on dispose le fil de manière approximativement rectiligne, sans tension, entre deux peignes, puis on croise les peignes, c'est-à-dire qu'on fait passer les dents de l'un des peignes de l'autre côté des dents de l'autre peigne en entîainant le fil. Celui-ci forme alors un méandre entre les deux peignes et il ne reste plus qu'à le presser sur la face adhésive de la feuille d'aluminium pour sa fixation sur cette feuille.The wire is arranged in meanders, for example in the following way: the wire is placed in an approximately rectilinear manner, without tension, between two combs, then we cross the combs, that is to say that we pass the teeth from one of the combs on the other side of the teeth of the other comb by drawing the wire. This then forms a meander between the two combs and it only remains to press it on the adhesive face of the aluminum sheet for fixing on this sheet.

Au lieu de la feuille de matière isolante, il est possible d'utiliser une seconde feuille d'aluminium adhésive, de sorte que le fil de cuivre isolé se trouve fixé sur et entre deux feuilles d'aluminium, ce qui augmente encore le contact entre le fil et son support diffuseur de chaleur.Instead of the sheet of insulating material, it is possible to use a second adhesive aluminum sheet, so that the insulated copper wire is fixed on and between two aluminum sheets, which further increases the contact between the wire and its heat diffusing support.

Pour réaliser un corps de chauffe pour le thermoformage d'une garniture intérieure de chaussure de ski, une longueur de fil de cuivre de 2 mètre est suffisante. Le fil occupe très peu de surface et il est facile de doser le chauffage en faisant varier la longueur de fil par unité de surface.To make a heating body for thermoforming an inner lining of a ski boot, a length of copper wire of 2 meters is sufficient. The wire occupies very little surface and it is easy to dose the heating by varying the length of wire per unit of surface.

La surface de la feuille d'aluminium peut être continue ou ajourée, par exemple si l'on désire éviter le chauffage de certaines parties.The surface of the aluminum foil can be continuous or perforated, for example if it is desired to avoid the heating of certain parts.

Au lieu d'une feuille d'aluminium, il est possible d'utiliser toute autre feuille métallique. Quant au fil il peut être constitué par un autre métal ductile, par exemple du maillechort. D'une manière générale le fil de cuivre pourra présenter un diamètre de 0,1 à 0,4 mm, selon l'usage et la feuille métallique pourra présenter une épaisseur allant de 0,02 à 1 mm. De manière générale, le fil métallique aura un diamètre compris entie 0,05 et 2,5 mm, selon la nature du métal et l'usage du corps de chauffe.Instead of aluminum foil, it is possible to use any other metallic foil. As for the wire, it may consist of another ductile metal, for example nickel silver. In general, the copper wire may have a diameter of 0.1 to 0.4 mm, depending on use and the metal sheet may have a thickness ranging from 0.02 to 1 mm. In general, the metal wire will have a diameter between 0.05 and 2.5 mm, depending on the nature of the metal and the use of the heating body.

La feuille métallique peut avoir, n'importe quelle forme, en particulier une forme adaptée à la partie de la garniture devant être chauffée, respectivement thermoformée, par exemple une des formes décrites dans le brevet EP 0 004 829.The metal sheet can have any shape, in particular a shape adapted to the part of the lining to be heated, respectively thermoformed, for example one of the shapes described in patent EP 0 004 829.

Claims (9)

1. Electrical heating element intended to be incorporated in an inner lining of an item of clothing or an accessory intended to be placed against a part of the human body, consisting of a wire of ductile metal coated with an insulating lacquer and fixed over its entire length to at least one metal sheet, characterized by the fact that said ductile metal is copper.
2. Heating element according to claim 1, characterized by the fact that the copper wire is covered with a sheet of insulating material.
3. Heating element according to claim 1, characterized by the fact that the copper wire is fixed to and between two metal sheets.
4. Heating element according to claim 1, characterized by the fact that the copper sheet has an adhesive side to which the said metal wire is fixed.
5. Heating element according to claim 1, characterized by the fact that the copper wire has a diameter in the range of 0.1 to 0.4 mm.
6. Heating element according to claim 1, characterized by the fact that the copper sheet has cut-outs.
7. Method of manufacturing a heating element according to claim 1, characterized in that the wire is laid and pressed onto an adhesive side of the metal sheet.
8. Method of manufacturing a heating element according to claim 1, characterized in that the copper wire is placed in an approximately rectilinear manner, without tension, between two combs, then the teeth of one of the combs is made to pass to the other side of the teeth of the other comb thus entraining the copper wire, in order to form meanders, before pressing the copper wire onto an adhesive surface of the metal sheet, and thereafter laying and pressing the meandering copper wire onto the adhesive side of the metal sheet.
9. Use of the heating element formed according to claim 1 for the thermo-forming of an inner lining of thermoformable material of an item of clothing or an accessory intended to be fitted to a part of the human body, characterized in that said lining and said part of the human body are placed mutually under pressure whilst increasing the temperature of the lining to its thermoforming temperature by causing an adequate electrical current to pass into the heating element.
EP84200575A 1983-05-02 1984-04-24 Electrical heating element to be incorporated in an inner layer of a garment or of an accessory, to be applied to a part of the human body Expired EP0124174B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84200575T ATE26056T1 (en) 1983-05-02 1984-04-24 ELECTRIC HEATING ELEMENT FOR INSERTION IN AN INNER PAD, GARMENT OR ACCESSORY INTENDED TO BE PRESSED AGAINST A HUMAN BODY PART.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2354/83 1983-05-02
CH2354/83A CH652883A5 (en) 1983-05-02 1983-05-02 ELECTRIC HEATER BODY INTENDED TO BE INCORPORATED IN AN INTERIOR TRIMS OF AN ELEMENT OF CLOTHING OR AN ACCESSORY INTENDED TO BE APPLIED AGAINST A PART OF THE HUMAN BODY.

Publications (2)

Publication Number Publication Date
EP0124174A1 EP0124174A1 (en) 1984-11-07
EP0124174B1 true EP0124174B1 (en) 1987-03-18

Family

ID=4231823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84200575A Expired EP0124174B1 (en) 1983-05-02 1984-04-24 Electrical heating element to be incorporated in an inner layer of a garment or of an accessory, to be applied to a part of the human body

Country Status (7)

Country Link
US (1) US4665308A (en)
EP (1) EP0124174B1 (en)
JP (1) JPS59214186A (en)
AT (1) ATE26056T1 (en)
CA (1) CA1214193A (en)
CH (1) CH652883A5 (en)
DE (1) DE3462742D1 (en)

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US4433494A (en) * 1978-04-06 1984-02-28 Lange International S.A. Article of clothing or accessory intended to adapt itself closely to a part of the human body and a process for adapting this article or accessory to this part of the human body
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JPS57176684A (en) * 1981-04-23 1982-10-30 Junkosha Co Ltd Resin burying heater
EP0244880B1 (en) * 1982-01-22 1990-07-18 NORDICA S.p.A Heater device, particularly for ski boots

Also Published As

Publication number Publication date
DE3462742D1 (en) 1987-04-23
JPS59214186A (en) 1984-12-04
EP0124174A1 (en) 1984-11-07
US4665308A (en) 1987-05-12
CA1214193A (en) 1986-11-18
ATE26056T1 (en) 1987-04-15
CH652883A5 (en) 1985-11-29

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