EP0070771B1 - Vitrage chauffant électrique - Google Patents

Vitrage chauffant électrique Download PDF

Info

Publication number
EP0070771B1
EP0070771B1 EP82401326A EP82401326A EP0070771B1 EP 0070771 B1 EP0070771 B1 EP 0070771B1 EP 82401326 A EP82401326 A EP 82401326A EP 82401326 A EP82401326 A EP 82401326A EP 0070771 B1 EP0070771 B1 EP 0070771B1
Authority
EP
European Patent Office
Prior art keywords
protective layer
heating conductors
layer
electrically heatable
collector strips
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
EP82401326A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0070771A1 (fr
Inventor
Mario Roth
Heinz Karla
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.)
Vegla Vereinigte Glaswerke GmbH
Saint Gobain Vitrage SA
Original Assignee
Vegla Vereinigte Glaswerke GmbH
Saint Gobain Vitrage SA
Saint Gobain Vitrage 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 Vegla Vereinigte Glaswerke GmbH, Saint Gobain Vitrage SA, Saint Gobain Vitrage International SA filed Critical Vegla Vereinigte Glaswerke GmbH
Publication of EP0070771A1 publication Critical patent/EP0070771A1/fr
Application granted granted Critical
Publication of EP0070771B1 publication Critical patent/EP0070771B1/fr
Expired legal-status Critical Current

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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
    • H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
    • 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
    • H05B2203/016—Heaters using particular connecting means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/901—Printed circuit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24926—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including ceramic, glass, porcelain or quartz layer

Definitions

  • the present invention relates to an electric heating glazing comprising narrow heating conductors disposed on a surface between current supply collector strips and made of an electrically conductive composition printed and baked and a protective layer of the enamel or glaze type in a paint. electrically insulating ceramic hardening by firing deposited on the collector strips so as to extend beyond their contours.
  • the covering layer which must also serve as a protective layer for the electrical conductors, is arranged not only on busbars, but also on narrow heating conductors.
  • the protective layer is applied in the form of a printable paste by means of a printing process on the previously printed and dried electrically conductive layer, and is baked at the same time as this last layer, in the course of a single and even heat treatment.
  • the heating conductors open into the collector strips without transition and retaining their width. Strictly speaking, a slight rounding is provided at the precise locations of the outlets of the heating conductors.
  • these baked protective layers of the enamel type can only be applied before the electroplating, so that the layers of metal cannot extend only to the edge of the protective layer of the collector strips. It is enough when it is necessary to apply an effective protective layer on the conductive strips. This is particularly so when the collector strips are arranged near the periphery of the glazing in the zone which is used for mounting the glazing in the bay of the bodywork, and when the glazing is fixed by gluing.
  • the adhesive materials or the base layers used have an unfavorable influence on the collector strips.
  • heated glazing comprising both heating conductors reinforced by electroplating and collecting strips provided with a baked protective layer
  • difficulties caused by possible weakened places in the transition zone between the heating conductors and the collecting strips worsen, because the cross section of the heating conductors is increased by the deposition of metal from the boundary edge of the protective layer.
  • the object of the invention is to provide a heated glazing unit which has current supply collector strips provided with an enamel-type protective layer and which satisfies the requirements imposed by lasting reliability.
  • the invention resides in the fact that the final sections of the heating conductors lying below the protective layer are widened to the point that the electrical resistance of the heating conductors is lower in the final sections than it is on the 'all of the heating sections proper.
  • desired transition zones are therefore provided in the final sections of the heating conductors, provided that they are below the protective layer. Weak places are thus avoided in this transition zone which could lead to overheating or even destruction of the heating conductors in these places.
  • the final sections of the heating conductors are widened over a length at least equal and preferably greater than the distance from which the protective layer exceeds the collector strips. It is thus possible to eliminate any harmful influence during a displacement of the protective layer resulting from the printing tolerances.
  • Heated glazing is used primarily as a rear window in motor vehicles.
  • the heating conductors 2 are arranged on the surface of the glazing 1 facing the interior of the passenger compartment in the form of narrow strips with a width of approximately 0.4 to 1.2 mm.
  • the heating conductors 2 are connected at their ends to relatively wide collecting strips 3. After mounting the glazing, the heating conductors 2 are usually arranged horizontally and the collector strips 3 are arranged along the two essentially vertical sides.
  • a strip 4 with a width of about 1 to 3 cm is disposed along the periphery of the glazing and is made of an opaque ceramic material hardening by firing.
  • This strip 4 is applied as a protective layer 4 on the collector strips 3 and is wider than the latter.
  • the strip 4 can be limited as regards its surface area, to the two collecting strips 3.
  • the strip 4 however has the form of a closed frame disposed all along the periphery of glazing 1 and further provides, outside of current supply conductors 3, along the periphery of glazing 1, an opaque zone intended to conceal the limits of the layer of adhesive which normally are not completely made regular and to stop the UV rays contained in daylight which have an unfavorable effect on the adhesive layer.
  • the widening of the heating conductors in their final sections 7 begins at a distance B from the delimiting edge 6 of the collector strips 3, the distance B having a length of 4 to 8 mm and therefore being worth at least about twice the distance A which indicates for its part, the extent to which the protective layer 4 protrudes from the collector strips 3 towards the heating field.
  • the distance A is of the order of 1 to 3 mm, which, within the framework of the printing tolerances, guarantees that the collector strips are in any case completely covered.
  • the final sections 7 of the heating conductors gradually widen up to a maximum width C at the location of the outlet in the collecting strip 3, the distance C being of the order of ten times the width of the heating conductors.
  • FIG. 2 illustrates in detail the arrangement of the layers in a heated glazing whose heating conductors 2 are provided with a layer of metal 15 applied by electroplating.
  • the metal layer 15 extends to the delimiting edge 5 of the covering layer 4.
  • the height H of the metallized heating conductors 2 is thus greater than the height h of the collector strips 3 free of layer deposited by electroplating.
  • the widening of the heating conductors in their final sections 7 also serves in this case to avoid a sudden drop in electrical conductivity at the transition point where the metal deposit ends 15.
  • the cross section of the heating conductors is increased by correspondingly increased width dimensions, up to a section value preferably at least equal to that of the section reinforced by the deposition of metal.
  • the protective layer 4 which protrudes laterally by a few millimeters the collector strips 3, protects the latter against attack by the base layer 9 which is intended to improve the adhesiveness of the adhesive layer 10.
  • the adhesive layer 10 connects the window pane 1 to the window frame 11 of the bodywork intended to receive this glazing unit 1.
  • FIG. 3 illustrates an embodiment in which the heating conductors 2 are made simply of a conductive composition of printed and baked metal, in particular of a conductive composition of silver, and in which another layer 12, which coincides with the protective layer 4, is arranged below the collector strips 3, directly on the surface of the glazing 1.
  • the protective layer 4 has a gap 13, so that at this location, the surface of the collector strip 3 is exposed.
  • a gap 16 of equal size is also provided below the gap 13 in the layer 12 disposed on the surface of the glass.
  • the conductive material based on silver hardened by baking which forms the collector strips 3 is connected directly to the surface of the glass. This avoids an unfavorable influence on the welded junction between the collecting strip and the electrical connection element 14. It has indeed been found that under certain conditions, the welding operation can be made more difficult by the fact that the constituents of the layer located below the welding spot diffuse in the collector strips 3, which influences for example the wettability of the current supply conductor 3 by the welding.
  • the screen printing stencil thus produced is used to print the glazing 1 using a cook electrically conductive. After printing the baking paste, the printed glazing is dried at a temperature of about 80 ° C for 5 to 10 minutes.
  • the covering or protective layer 4 in the form of a frame and this also by screen printing in a manner corresponding to that used for the preparation of the screen printing stencil used to print the electrical conductors.
  • care must be taken to provide, on each of the two collecting strips 3, a gap 13 which releases the collecting strip 3, so that the electrical connection elements 14 for the power cables can then be soldered in these places.
  • contact openings 7 must remain in the protective layer 4 in order to establish contact with the collector strips in the electroplating bath.
  • paste for printing it is possible to use in this second printing operation for example the ceramic paint that hardens during cooking 14 710/80 392 from the company DEGUSSA.
  • the protective layer 4 After printing the protective layer 4, this printed layer is also dried again.
  • the glazing 1 is then heated to its bending or quenching temperature, it is bent if necessary to the desired shape, then it is subjected to thermal quenching by sudden cooling.
  • the glazing After tempering, the glazing is subjected to an electroplating process by establishing contact at the contact openings 17 and by depositing a layer of copper and a layer of nickel 15 in the corresponding electroplating baths.
  • the electroplating is carried out in accordance with the method described in US Pat. No. 3,553,833 already cited.
  • the procedure is basically as described above. Unlike the process used in the first printing operation, however, in this case the framing layer 12 is printed. For this purpose, the same screen printing stencil as that which can later be used for printing can be used. the protective layer 4 on the collector strips 3. The same ceramic paint that hardens during firing is used for layer 12 and for protective layer 4.

Landscapes

  • Surface Heating Bodies (AREA)
  • Surface Treatment Of Glass (AREA)
  • Non-Metallic Protective Coatings For Printed Circuits (AREA)
  • Resistance Heating (AREA)
EP82401326A 1981-07-15 1982-07-15 Vitrage chauffant électrique Expired EP0070771B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8113806A FR2509947A1 (fr) 1981-07-15 1981-07-15 Vitrage chauffant electrique
FR8113806 1981-07-15

Publications (2)

Publication Number Publication Date
EP0070771A1 EP0070771A1 (fr) 1983-01-26
EP0070771B1 true EP0070771B1 (fr) 1986-10-22

Family

ID=9260522

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82401326A Expired EP0070771B1 (fr) 1981-07-15 1982-07-15 Vitrage chauffant électrique

Country Status (10)

Country Link
US (1) US4453669A (enrdf_load_stackoverflow)
EP (1) EP0070771B1 (enrdf_load_stackoverflow)
JP (1) JPS5832042A (enrdf_load_stackoverflow)
BR (1) BR8204067A (enrdf_load_stackoverflow)
DE (1) DE3273938D1 (enrdf_load_stackoverflow)
ES (1) ES513986A0 (enrdf_load_stackoverflow)
FI (1) FI75718C (enrdf_load_stackoverflow)
FR (1) FR2509947A1 (enrdf_load_stackoverflow)
IE (1) IE53691B1 (enrdf_load_stackoverflow)
PT (1) PT75236B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4111625A1 (de) * 1991-04-10 1991-09-12 Torgau Flachglas Loetbereich von sammelschienen heizbarer autoscheiben mit maskendruck

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3344958C1 (de) * 1983-12-13 1984-07-19 VEGLA Vereinigte Glaswerke GmbH, 5100 Aachen Verfahren zum Verloeten eines Stromanschlusselementes mit dem Stromzufuehrungsleiter einer heizbaren Glasscheibe
US4542285A (en) * 1984-02-15 1985-09-17 Flexwatt Corporation Electrical heater
JPS60138806U (ja) * 1984-02-27 1985-09-13 オ−ツタイヤ株式会社 水田用空気入タイヤ車輪
GB8431894D0 (en) * 1984-12-18 1985-01-30 Pilkington Brothers Plc Laminated windows for vehicles
DE3532119A1 (de) * 1985-09-10 1987-03-19 Ver Glaswerke Gmbh Elektrisch beheizbare autoglasscheibe
DE3543694A1 (de) * 1985-12-11 1987-06-19 Leybold Heraeus Gmbh & Co Kg Verfahren zum herstellen von kontaktbahnen auf substraten, insbesondere auf scheiben, und durch das verfahren hergestellte scheiben
GB8704469D0 (en) * 1987-02-25 1987-04-01 Thorn Emi Appliances Thick film electrically resistive tracks
US4910380A (en) * 1987-07-21 1990-03-20 Flachglass Aktiengesellschaft Vehicle window with black obscuration band incorporating a black electrically conductive coating-deposited heating element
GB2223385B (en) * 1988-06-22 1992-08-26 Splintex Belge Sa Vitreous substrate bearing electric circuit components and method of manufacturing same
US5213828A (en) * 1989-07-03 1993-05-25 Ppg Industries, Inc. Heatable windshield
US4954153A (en) * 1989-07-03 1990-09-04 Ppg Industries, Inc. Processing glass sheets with ceramic enamel bands
US5733263A (en) * 1994-09-20 1998-03-31 Cabot Technology Corporation Thermal retention system and method
US5525401A (en) * 1994-10-24 1996-06-11 Decoma International Inc. Vehicle window and method of making the same
GB9425986D0 (en) * 1994-12-22 1995-02-22 Pilkington Glass Ltd Electrically heated window
DE19704352B4 (de) * 1997-02-05 2005-04-28 Josef Winter Widerstands-Heizvorrichtung
DE19844046C2 (de) * 1998-09-25 2001-08-23 Schott Glas Mehrscheibenisolierglas
JP4206584B2 (ja) * 1998-11-10 2009-01-14 旭硝子株式会社 防曇ガラス
US6267630B1 (en) 1999-08-04 2001-07-31 Antaya Technologies Corporation Circular connector with blade terminal
WO2001014136A1 (en) * 1999-08-26 2001-03-01 Glaverbel Glazing
US6180921B1 (en) 1999-10-08 2001-01-30 Visteon Global Technologies, Inc. Windshield heating device
JP3524521B2 (ja) * 2001-07-03 2004-05-10 本田技研工業株式会社 コンバーチブルトップ用リヤーガラスにおける通線保護ケース構造
US7265323B2 (en) 2001-10-26 2007-09-04 Engineered Glass Products, Llc Electrically conductive heated glass panel assembly, control system, and method for producing panels
US6793120B2 (en) 2002-01-17 2004-09-21 Donnelly Corporation Apparatus and method for mounting an electrical connector to a glass sheet of a vehicle window
US20050072455A1 (en) * 2002-04-04 2005-04-07 Engineered Glass Products, Llc Glass solar panels
DE10249992C1 (de) * 2002-10-26 2003-12-24 Saint Gobain Sekurit D Gmbh Durchsichtige Scheibe mit einer undurchsichtigen Kontaktfläche für eine Lötverbindung
DE102004018215A1 (de) * 2004-04-15 2005-11-10 Daimlerchrysler Ag Verfahren zur Herstellung einer Scheibenanordnung mit auf einer Scheibe aufgebrachten elektrischen Leitern und eine Scheibenanordnung mit aufgebrachten elektrischen Leitern
DE102005040812A1 (de) * 2005-08-27 2007-03-15 Few Fahrzeugelektrikwerk Gmbh & Co. Kg Elektrischer Anschluss sowie Verfahren zu dessen Verbindung mit der Scheibe eines Kraftfahrzeugs
EP1840449B1 (en) * 2006-03-30 2014-03-12 AGC Glass Europe Light Panel
EA017207B1 (ru) * 2007-07-04 2012-10-30 Агк Гласс Юроп Панель освещения со светоизлучающими диодами
US20100236608A1 (en) * 2009-03-20 2010-09-23 Ball Jasper T Photovoltaic module with heater
GB201020014D0 (en) * 2010-11-25 2011-01-12 Pilkington Group Ltd Vehicle design for soldered glazing connector
KR101309731B1 (ko) * 2012-07-10 2013-09-17 주식회사 포스코 크레인 차륜용 고체 윤활제 공급장치
US10690391B2 (en) 2013-03-15 2020-06-23 Whirlpool Corporation Appliance using heated glass panels
FR3030493B1 (fr) * 2014-12-18 2016-12-30 Saint Gobain Substrat en verre muni de bandes conductrices a base de cuivre
JP6858480B2 (ja) * 2015-01-30 2021-04-14 大日本印刷株式会社 合わせガラスおよび導電性発熱体
DE102015008838B4 (de) * 2015-07-05 2023-10-12 INPRO Innovationsgesellschaft für fortgeschrittene Produktionssysteme in der Fahrzeugindustrie mbH Verfahren zum Herstellen eines Heizsystems auf einer 3D-Kunststoffscheibe wie einer 3D-Kfz-Scheibe aus Kunststoff
GB201719522D0 (en) * 2017-11-24 2018-01-10 Pilkington Group Ltd Electrical connector glazing havingthe same and method of fitting the glazing
GB201804622D0 (en) * 2018-03-22 2018-05-09 Central Glass Co Ltd Method of producing a vehicle glass assembly
US20220242200A1 (en) * 2019-05-29 2022-08-04 Central Glass Company, Limited Coating deletion for electrical connection
JP2024164329A (ja) * 2021-08-19 2024-11-27 大日本印刷株式会社 導電体
KR20250070369A (ko) * 2023-11-13 2025-05-20 주식회사 케이씨씨글라스 차량용 유리 및 그 제조 방법

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DE1690298A1 (de) * 1966-08-08 1971-05-13 Triplex Safety Glass Co Auf glasartige Koerper aufgebrachte Bestandteile elektrischer Anordnungen

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US2864928A (en) * 1957-01-18 1958-12-16 Sierracin Corp Electrically conductive optical article
DE1555053B1 (de) * 1964-04-23 1970-04-30 Saint Gobain Verfahren zur Herstellung einer heizbaren Autoscheibe
FR2105845A5 (enrdf_load_stackoverflow) * 1970-09-09 1972-04-28 Delog Detag Flachglas Ag
US4023008A (en) * 1972-12-28 1977-05-10 Saint-Gobain Industries Terminal connection for electric heaters for vehicle windows
US4109044A (en) * 1976-08-27 1978-08-22 Libbey-Owens-Ford Company Electrically heated window having sharply bent portions
US4284677A (en) * 1979-04-24 1981-08-18 Libbey-Owens-Ford Company Glazing unit
US4388522A (en) * 1980-12-08 1983-06-14 Ford Motor Company Electrically heated backlite structure

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1690298A1 (de) * 1966-08-08 1971-05-13 Triplex Safety Glass Co Auf glasartige Koerper aufgebrachte Bestandteile elektrischer Anordnungen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4111625A1 (de) * 1991-04-10 1991-09-12 Torgau Flachglas Loetbereich von sammelschienen heizbarer autoscheiben mit maskendruck

Also Published As

Publication number Publication date
FR2509947A1 (fr) 1983-01-21
DE3273938D1 (en) 1986-11-27
ES8305175A1 (es) 1983-04-01
US4453669A (en) 1984-06-12
FI822515A0 (fi) 1982-07-14
FR2509947B1 (enrdf_load_stackoverflow) 1984-04-20
JPH0369854B2 (enrdf_load_stackoverflow) 1991-11-05
PT75236B (fr) 1984-10-29
BR8204067A (pt) 1983-07-05
FI822515L (fi) 1983-01-16
EP0070771A1 (fr) 1983-01-26
JPS5832042A (ja) 1983-02-24
IE53691B1 (en) 1989-01-18
PT75236A (fr) 1982-08-01
FI75718C (fi) 1988-07-11
IE821680L (en) 1983-01-15
ES513986A0 (es) 1983-04-01
FI75718B (fi) 1988-03-31

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