ES2075542T3

ES2075542T3 - TRANSPARENT THERMAL MOON, ELECTRICALLY HEATED.

Info

Publication number: ES2075542T3
Application number: ES92110478T
Authority: ES
Inventors: Jost Dipl-Ing Welteroth
Original assignee: Braas GmbH
Current assignee: Braas GmbH
Priority date: 1991-06-26
Filing date: 1992-06-22
Publication date: 1995-10-01
Anticipated expiration: 2012-06-22
Also published as: JPH081827B2; DE59202793D1; JPH05205859A; EP0520353B1; DE4121102A1; EP0520353A1

Abstract

LA INVENCION SE REFIERE A UN CRISTAL (10) CON CALEFACCION ELECTRICA, QUE PRESENTA DOS SUPERFICIES IDENTICAS, UNA INFERIOR Y UNA SUPERIOR (14,15), CADA UNA DE ELLAS DE MATERIAL SINTETICO TRANSPARENTE, ENTRE LAS CUALES SE HA DISPUESTO DIRECTAMENTE UN CONDUCTOR CALEFACTOR ELECTRICO DE FORMA PLANA (12), EL CUAL PRESENTA EN LAS SECCIONES DE LOS BORDES OPUESTOS, CADA UNA DE ELLAS, UNA PISTA DE COBRE CONDUCTORA (18,20). CON OBJETO DE FABRICAR UN CRISTAL CON CALEFACCION ELECTRICA DE FORMA RENTABLE, FLEXIBLE Y EXENTA DE DEFECTOS OPTICOS, QUE PUEDE SER UTILIZADA ESENCIALMENTE EN VEHICULOS DESCAPOTABLES DE PASAJEROS COMO LUNETA TRASERA, SE PROPONE QUE LA SUPERFICIE INFERIOR (14) Y LA SUPERFICIE SUPERIOR (15) ESTE COMPUESTA DE CLORURO DE POLIVINILO BLANDO, CON UN GROSOR DE MENOS DE 1 MM, QUE EL CONDUCTOR CALEFACTOR (12) ESTE CONCEBIDO COMO MALLA (16), CON UNA ABERTURA DE MALLA DE MENOS DE 5 MM, QUE LAS PISTAS DE COBRE CONDUCTORAS (18, 20) ESTEN DISPUESTAS EN LOS DOS BORDES LONGITUDINALES DEL CONDUCTORCALEFACTOR (12), Y QUE LAS PISTAS DE COBRE CONDUCTORAS (18, 20) ESTEN CUBIERTAS HACIA LA SUPERFICIE INFERIOR (14) Y HACIA LA SUPERFICIE SUPERIOR (15), CON UNA LAMINA PROTECTORA (34) QUE, CON RELACION AL MATERIAL DE LAS PISTAS CONDUCTORAS (18,20), SEAN DE MATERIAL PLASTICO QUIMICO RESISTENTE. EL GROSOR DE LA SUPERFICIE INFERIOR (14) Y DE LA SUPERFICIE SUPERIOR (15), DEBERIA DE SER RESPECTIVAMENTE DE 0,5 MM APROXIMADAMENTE. LOS HILOS DE LA PISTA CONDUCTORA (18,20) PUEDEN SER DE COBRE Y LA MALLA (16) DEL CONDUCTOR CALEFACTOR DE HILO DE CROMO-NIQUEL, DE MENOS DE 0,5 MM DE DIAMETRO, PREFERENTEMENTE DE 0,05 MM DE DIAMETRO, CON UNA ABERTURA DE MALLA PREFERENTEMENTE DE 0,5 MM. COMO LAMINA PROTECTORA (34) SE HA DE PREVER PREFERENTEMENTE UNA LAMINA DE ACRILATO. LA MALLA (16) PUEDE PRESENTAR UNA CONDUCTIVIDAD ELECTRICA DISTINTA EN DIRECCION LONGITUDINAL QUE EN DIRECCION TRANSVERSAL.THE INVENTION REFERS TO A GLASS (10) WITH ELECTRIC HEATING, WHICH PRESENTS TWO IDENTICAL SURFACES, ONE LOWER AND ONE UPPER (14,15), EACH OF THEM OF TRANSPARENT SYNTHETIC MATERIAL, BETWEEN WHICH A HEATING CONDUCTOR HAS BEEN DISPOSED DIRECTLY FLAT ELECTRIC (12), WHICH PRESENTS, IN THE SECTIONS OF THE OPPOSITE EDGES, EACH ONE OF THEM, A CONDUCTIVE COPPER TRACK (18,20). IN ORDER TO MANUFACTURE A GLASS WITH ELECTRIC HEATING IN A PROFITABLE, FLEXIBLE WAY AND FREE OF OPTICAL DEFECTS, WHICH CAN BE ESSENTIALLY USED IN UNCOVERABLE VEHICLES OF PASSENGERS AS REAR WINDOW (UPPER) 15 (UPPER) AND LOWER (14) THIS COMPOSITE OF SOFT POLYVINYL CHLORIDE, WITH A THICKNESS OF LESS THAN 1 MM, THAT THE HEATING CONDUCTOR (12) IS CONCEIVED AS A MESH (16), WITH A MESH OPENING OF LESS THAN 5 MM, THAT THE CONDUCTIVE COPPER TRACKS ( 18, 20) ARE ARRANGED ON THE TWO LONGITUDINAL EDGES OF THE HEATER CONDUCTOR (12), AND THAT THE CONDUCTIVE COPPER TRACKS (18, 20) ARE COVERED TOWARD THE LOWER SURFACE (14) AND TO THE UPPER SURFACE (15), WITH A SHEET PROTECTOR (34) THAT, IN RELATION TO THE MATERIAL OF THE CONDUCTIVE TRACKS (18,20), ARE MADE OF RESISTANT CHEMICAL PLASTIC MATERIAL. THE THICKNESS OF THE LOWER SURFACE (14) AND OF THE UPPER SURFACE (15) SHOULD BE RESPECTIVELY APPROXIMATELY 0.5 MM. THE THREADS OF THE CONDUCTIVE TRACK (18,20) MAY BE COPPER AND THE MESH (16) OF THE CHROME-NICKEL THREAD HEATER CONDUCTOR, LESS THAN 0.5 MM IN DIAMETER, PREFERABLY 0.05 MM IN DIAMETER, WITH A PREFERRED MESH OPENING OF 0.5 MM. AS A PROTECTIVE SHEET (34) AN ACRYLATE SHEET HAS TO BE PREFERRED PREFERABLY. THE MESH (16) MAY PRESENT AN ELECTRICAL CONDUCTIVITY DIFFERENT IN A LONGITUDINAL DIRECTION THAN IN A CROSS-DIRECTION.