WO2004045901A1 - Covered conductor and heater formed therewith - Google Patents
Covered conductor and heater formed therewith Download PDFInfo
- Publication number
- WO2004045901A1 WO2004045901A1 PCT/EP2003/012833 EP0312833W WO2004045901A1 WO 2004045901 A1 WO2004045901 A1 WO 2004045901A1 EP 0312833 W EP0312833 W EP 0312833W WO 2004045901 A1 WO2004045901 A1 WO 2004045901A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heater
- covering
- conductor
- substrate
- conductive element
- Prior art date
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
-
- 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
-
- 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
- H05B3/40—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
-
- 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
- H05B2203/029—Heaters specially adapted for seat warmers
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49082—Resistor making
- Y10T29/49087—Resistor making with envelope or housing
Definitions
- the present invention relates generally to covered (e.g., coated) conductors and more particularly to covered conductors for use in heating systems of automotive vehicle seats or other articles of manufacture.
- a conductor and a method of forming the same.
- the conductor is formed by providing a conductive element and applying a coating to the conductive element.
- the coating includes at least a portion that has a relatively low melting point.
- the conductor has an inner portion with a first melting point and an outer portion with a second melting point that is relatively low compared to the first melting point.
- a heater and a method of forming the same The heater is formed by providing a conductor as described above and contacting that conductor with a substrate. During such contact, the relatively low melting point portion of the coating of the conductor is softened by heating and integrated with the substrate. Thereafter, the relatively low melting point portion of the coating is hardened by cooling thereby attaching the conductor to the substrate.
- a seat for an automotive vehicle and a method of forming the same The seat is formed by providing a heater as just described and integrating that heater into the seat.
- Fig. 2 is a sectional view of another exemplary conductor in accordance with the present invention.
- Fig. 2A is a sectional view of another alternative exemplary conductor in accordance with the present invention
- Fig. 3 is a top view of one illustrative heater element useful in accordance with the present invention.
- Fig. 4 is a partially cut away perspective view of a seat of an automotive vehicle seat assembly in accordance with an exemplary aspect of the present invention.
- the present invention is predicated upon providing an improved coated conductor.
- the conductor may be employed in a variety of articles of manufacture including, without limitation, electronic articles such as door panels, wheels, floormats, radios, televisions, calculators, computers or the like.
- the conductor is particularly suitable for use in heaters and even more particularly, the conductor is suitable for use in heater systems of seats for use in automotive vehicles.
- the conductor of the present invention is provided with a covering (e.g., a coating) wherein at least a portion of the covering is activatable (e.g., has a relatively low melting point).
- the portion of the covering that is activatable may be activated (e.g., heated and softened) such that the softened portion can integrate itself with a substrate for attaching the conductor to the substrate. Upon cooling it will preferably re-harden and attach to the substrate.
- Fig.1 there is illustrated a schematic diagram of a conductor 10 in accordance with one aspect of the present invention.
- the conductor 10 includes a conductive element 12 and a covering 14 (e.g., a coating) disposed over at least a portion of the conductive element 12.
- the covering 14 is in direct contact with a surface 20 of the conductive element 12, however, it is contemplated that one or more intermediate layers may be disposed between the covering 14 and the conductive element 12, over some or all of the conductive element.
- the term conductive element 12 is used to refer to any medium capable of carrying an electrical charge, conducting heat or electricity or a combination thereof. Accordingly, the conductive element 12 may be provided in several different shapes, sizes, configurations or the like. As examples, the conductive element 12 may be provided as one or a plurality of plates, blocks, strands, tapes, sheets, weavings, deposited traces (e.g., electrochemically deposited traces, vapor deposited traces) of combinations thereof. The shape of the element may be straight, arcuate, planar, helical, woven, twisted, wound, contoured, geometric, combinations thereof or the like.
- the conductive element 12 may be formed as a single component (e.g., as a single wire) or as multiple components (e.g., as a plurality of wires wound or twisted together, axially aligned, or otherwise integrated with each other). It is also contemplated that the conductive element may include a plurality of generally parallel spaced apart wires such as for ribbon cables or the like.
- the conductive element may also be formed of a variety of materials. Such materials may include metals, plastics, polymeric materials, elastomers, glass and optical materials, organic materials, inorganic materials combinations thereof or the like. Exemplary metals, which may partially or fully compose the conductive element include, without limitation, copper, aluminum, silver, tin, tungsten, gold, platinum or the like. Exemplary polymeric materials, which may partially or fully compose the conductive element include conductive polymers such as polyaniline, conjugated polymers, doped polymers, combinations thereof or the like. In one embodiment, the conductive element may be provided as a polymeric material having a dispersion of metal or carbon black. The covering 14, like the conductive element 12, may be formed in a variety of different shapes, sizes and configurations.
- the covering may be planar, contoured, continuous, discontinuous (e.g. intermittent, porous, or the like) or combinations thereof.
- the covering 14 forms a layer upon the conductive element 12 wherein the layer has a substantially uniform thickness, however, a variable thickness is also contemplated within the scope of the present invention.
- the coating is so formed relative to the conductive element that some of the material is disposed in the interstices of separate filaments of the conductive element.
- the covering 14 may be formed of a singular homogeneous material.
- the melting temperature of the homogeneous material is typically between about 40 °C or lower and about 275 °C or higher, more preferably it is between about 90 °C and about 180 °C, even more preferably it is between about 110 °C and about 160 °C.
- the covering 14 While one embodiment contemplates a homogeneous composition of the coating material throughout the covered conductor, generally, it is preferable for the covering 14 to very in composition at locations across a section or along the covered conductors length. As an example, the composition of the covering 14 will exhibit a gradient across a portion of the covering 14 (e.g., from the conductive element 12 to an outer surface 28 of the covering 14). This can be achieved by introducing a gradient within a single coating layer. It may be achieved by employing a plurality of layers, each an individual substantially homogeneous layer, or having one or more non-homogeneous layers.
- one preferred covering 14 is formed of a first portion 34 and a second portion 36 with both portions being formed of compositionally different materials.
- the materials are selected of the first portion 34 does not substantially intermix with the material of a second portion 36.
- each of the portions 34 and 36 are able to remain substantially discrete from each other.
- some or substantial intermixing or interdiffusion of the materials may occur in certain situations, particularly at the interface 38 of portions 34, 36.
- the portions 34, 36 of the covering While no particular thickness are required for the portions 34, 36 of the covering, it is contemplated that, particularly for application within heaters, the portions 34, 36 be relatively thin.
- the thickness of the inner portion 34 or the thickness of singular homogeneous covering is preferably between about 0.001 inches or lower and about 0.1 inches or higher, more preferably between about 0.005 inches and about 0.05 inches and even more preferably between about 0.0075 inches and about 0.025 inches.
- Exemplary thicknesses for the outer portion 36 are preferably between about 0.0001 inches or lower and about 0.03 inches or higher, more preferably between about 0.001 inches and about 0.01 inches and even more preferably between about 0.0025 inches and about 0.0075 inches.
- the compositions of the first portion 34 and the second portion 36 are such that the material of the inner portion 34 has a higher melting point than the material of the outer portion 36.
- the melting point of the inner portion 34 is preferably between about 10 °C and about 200 °C, more preferably between about 30 °C and about 150 °C and even more preferably between about 40 °C and about 120 °C greater than the melting point of the outer portion 36.
- the actual melting point of the inner portion 34 is preferably between about 80 °C or lower and about 400 °C or higher, more preferably between about 110 °C and about 330 °C, even more preferably between about 170 °C and about 275 °C.
- the actual melting point of the outer portion 36 is preferably between about 40 °C or lower and about 275 °C or higher, more preferably between about 90 °C and about 180 °C, even more preferably between about 110 °C and about 160 °C.
- the covering 14 is preferably formed of one or more polymeric materials, which may include plastics, thermoplatics, elastomers, combinations thereof or the like.
- Exemplary materials include, without limitation, silicon, polytetrafluoroethylene (PTFE), polyvinylchloride (PVC), polypropylene, high density polyethylene (HDPE), low density polyethylene (LDPE), fluorinated or chlorinated polyethylene, fluoroethylene propylene, polyfluoroethylen (PFE), combinations thereof or the like. It is contemplated that the materials mentioned or combinations thereof may be used as the material for a singular material homogeneous covering or a non- homogeneous covering (e.g., a covering having two or more substantially separate portions).
- the conductor 50 is a wire that is illustrated in cross-section.
- the conductor 50 includes a conductive element 52 that is comprised of a plurality (e.g., six) of metal strands 54 assembled together.
- the strands may be assemble about an insert 56, which is formed of KEVLAR ® or another material.
- the conductive element 52 is substantially entirely surrounded by a covering 58.
- the covering 58 includes an inner portion 60, which is generally annular and substantially entirely surrounds the conductive element 52.
- the covering 58 further includes an outer portion 64 substantially entirely surrounding the inner portion 60 and the conductive element 52.
- the inner portion 60 directly contacts the conductive element 52 and the outer portion 64 directly contacts the inner portion 60 although such is not necessarily required.
- Fig. 2(a) there is illustrated another exemplary embodiment of a conductor 70 in accordance with the present invention.
- the conductor 70 of Fig. 2(a) includes the same conductive element 52 as the conductor 50 of Fig. 2.
- the conductor 70 includes a covering 72 formed of a singular homogeneous material.
- the entire covering 72 is formed of the polyethylene material that is used to form the outer portion 64 of the conductor 50 of Fig. 2(a).
- Manufacture of the conductor of the present invention typically includes application of the covering to the conductive element. The skilled artisan will recognize that many techniques may be employed for applying the covering to the conductive element.
- the conductive element 52 may be passed through an extruder such that the extruder coats the conductive element 52 with molten material of the inner portion 60 followed by allowing the molten material to cool, cure, harden or a combination thereof for forming the inner portion 60. Thereafter, the conductive element 52 and the inner portion 60 may be passed together through either the original extruder or another extruder such that one of these extruders coats the inner portion 60 with molten material of the outer portion 64 followed by allowing the molten material to cool, cure, harden or a combination thereof for forming the second portion 64.
- the conductor of the present invention may be employed in a variety of articles of manufacture and may operate in a variety of capacities.
- the conductor of the present invention has found particular utility for use in heaters.
- the conductor is attached to a substrate for forming a heater or at least a portion thereof.
- the conductor may be attached to a wide variety of substrates for forming a heater and the type of substrate will often depend upon the type of heater desired.
- Exemplary substrates include fabrics, panels, members, combinations thereof or the like.
- various materials may be employed for forming the substrate.
- the substrate may be formed of fibrous materials, polymeric materials, metals, combinations thereof or the like.
- the substrate is formed of a fleece material, a gauze material, a felt material or combinations thereof.
- a heated member e.g., a heated plate
- the heated member conveys energy to the substrate, which conveys energy to the covering thereby softening the covering.
- the softened covering is integrated with the substrate followed by lowering the temperature of the covering such that the covering hardens and attaches itself and the conductor to the substrate.
- FIG. 3 there is illustrated an exemplary heater 80 formed in accordance with an aspect of the present invention.
- a substrate 82 is provided and a conductor it attached thereto.
- the conductor 50 of Fig. 2 has been attached to the substrate 82 although, it shall be understood that any of the conductors discussed herein may also be used.
- the substrate 82 is preferably a fabric material that is provided as a sheet or panel. Preferred fabric materials include fleece materials, felt materials, combinations thereof or the like.
- the conductor 50 is then arranged (e.g., patterned) upon the substrate 82 in a desired configuration. In Fig. 2, the conductor 50 is patterned in a serpentine manner and forms two undulating pathways 86 that are in a lateral or side-by-side relationship with each other. It shall be understood, however, that the conductor 50 may be patterned upon the substrate 82 in a myriad of configurations within the scope of the present invention.
- energy e.g., heat
- at least partially softening e.g., melting
- such energy may be applied according to different techniques, it is preferable for the particular example shown that such energy be applied by flowing an electrical current through the conductive element 52 for heating the element and the covering 58.
- the portion 64 preferably integrates itself with the substrate 82 such as by flowing into the substrate 82, wetting a portion or surface of the substrate 82, combinations thereof or the like.
- the portion 64 of the covering 58 is preferably allowed to cool and harden (e.g., solidify) thereby attaching (e.g., adhering) the conductor 52 to the substrate 82 for forming the heater 80.
- a plate or other member may be employed to place pressure or force upon the substrate 82, the conductor 50 or both for urging the substrate 82 and conductor 50 into more intimate contact during integration of the covering 58 with the substrate 82.
- the melting point of the inner portion 60 of the conductor 50 is typically higher than the melting point of the outer portion 64 of the conductor 50 such that the heating of the covering 58 only substantially softens the outer portion 64 of the conductor 50 without substantially softening the inner portion 60. This allows the outer portion 64 of the conductor 50 to attach to the substrate without risking substantial repositioning or other damage of the conductive element 52, the inner portion 60 or both.
- a covering may be configured to activate (e.g., soften) and integrate itself within a substrate by various methods.
- a covering may be activated by exposure to a condition such as heat, pressure, moisture, heat or the like to chemically or otherwise physically activate or soften.
- heaters formed with the conductor of the present invention it has been found that heaters such as the heater 80 of Fig. 3 are particularly suitable for integration to seats of automotive vehicles.
- conductors and heaters formed according to the present invention find utility in other articles of manufacture such as boats, furniture or the like as well.
- a heater according to the present invention may be located in various portions of an automotive vehicle seat such as a support portion, a backrest portion, a shoulder support portion or a headrest.
- the heater may be located between the trim of the seat and the foam cushioning of the seat.
- the heater may also be integrated into the trim of the seat, the foam cushioning of the seat or both.
- each component 92, 94 of the seat 90 includes a trim layer 96 and a foam cushion 98 and each of the heaters 70 is positioned substantially between the foam cushion 98 and trim layer 96.
- each heater 70 is fastened to the seat 90 (e.g., the trim layer 96, the cushion 98 or both) for maintaining the heater 80 stationary relative to the seat 90.
- a temperature regulation unit may be employed in conjunction with the heater 80.
- a temperature regulation unit may include a controller and a thermostat configured for maintaining desired temperatures during heating.
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Resistance Heating (AREA)
- Surface Heating Bodies (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10393741T DE10393741B4 (en) | 2002-11-15 | 2003-11-13 | Covered conductor and heater thus produced |
JP2004552622A JP4118878B2 (en) | 2002-11-15 | 2003-11-13 | Coated conductors and heaters where conductors are formed |
AU2003288086A AU2003288086A1 (en) | 2002-11-15 | 2003-11-13 | Covered conductor and heater formed therewith |
CA002505739A CA2505739C (en) | 2002-11-15 | 2003-11-13 | Covered conductor and heater formed therewith |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/295,491 | 2002-11-15 | ||
US10/295,491 US7223948B2 (en) | 2002-11-15 | 2002-11-15 | Covered conductor and heater formed therewith |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004045901A1 true WO2004045901A1 (en) | 2004-06-03 |
Family
ID=32297216
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/012833 WO2004045901A1 (en) | 2002-11-15 | 2003-11-13 | Covered conductor and heater formed therewith |
Country Status (8)
Country | Link |
---|---|
US (3) | US7223948B2 (en) |
JP (1) | JP4118878B2 (en) |
KR (1) | KR20050086672A (en) |
CN (1) | CN1711185A (en) |
AU (1) | AU2003288086A1 (en) |
CA (1) | CA2505739C (en) |
DE (1) | DE10393741B4 (en) |
WO (1) | WO2004045901A1 (en) |
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US20100089894A1 (en) * | 2008-10-14 | 2010-04-15 | Simon Nicholas Richmond | Heating Apparatus |
CH702153B1 (en) * | 2009-11-11 | 2014-02-28 | Roger Wyler | A method for connecting a flexible, in particular textile, structure. |
JP5753577B2 (en) | 2010-05-27 | 2015-07-22 | ダブリユーイーテイー・オートモーテイブ・システムズ・リミテツド | Heater for motor vehicle and method of forming the same |
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DE102012017047A1 (en) | 2012-08-29 | 2014-03-06 | W.E.T. Automotive Systems Ag | Electric heater |
DE102012024903A1 (en) | 2012-12-20 | 2014-06-26 | W.E.T. Automotive Systems Ag | Flat structure with electrical functional elements |
JP5961324B2 (en) | 2012-12-21 | 2016-08-02 | ダブリユーイーテイー・オートモーテイブ・システムズ・リミテツド | Apparatus and method for improving response time of temperature control target apparatus |
WO2018085104A1 (en) | 2016-11-01 | 2018-05-11 | Gentherm Incorporated | Flexible heater and method of integration |
DE102017001097A1 (en) | 2017-02-07 | 2018-08-09 | Gentherm Gmbh | Electrically conductive foil |
KR20200034672A (en) * | 2017-07-26 | 2020-03-31 | 쿠라베 가부시키가이샤 | Cord-shaped heater, seat-shaped heater and manufacturing method of seat-shaped heater |
DE102017008496B4 (en) * | 2017-09-11 | 2023-04-27 | I.G. Bauerhin Gmbh | Method of manufacturing a heating element for user-touchable surfaces in a vehicle |
KR101940066B1 (en) * | 2018-01-08 | 2019-01-18 | 오수연 | Heating unit and manufacturing method thereof |
DE102018204142A1 (en) * | 2018-03-19 | 2019-09-19 | Ford Global Technologies, Llc | Interior trim |
CN113167035A (en) | 2018-12-05 | 2021-07-23 | 恩文特服务有限责任公司 | Anti-icing surface with polymer support |
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2002
- 2002-11-15 US US10/295,491 patent/US7223948B2/en active Active
-
2003
- 2003-11-13 JP JP2004552622A patent/JP4118878B2/en not_active Expired - Fee Related
- 2003-11-13 WO PCT/EP2003/012833 patent/WO2004045901A1/en active Application Filing
- 2003-11-13 KR KR1020057008751A patent/KR20050086672A/en not_active Application Discontinuation
- 2003-11-13 AU AU2003288086A patent/AU2003288086A1/en not_active Abandoned
- 2003-11-13 CN CNA2003801033888A patent/CN1711185A/en active Pending
- 2003-11-13 CA CA002505739A patent/CA2505739C/en not_active Expired - Fee Related
- 2003-11-13 DE DE10393741T patent/DE10393741B4/en not_active Expired - Fee Related
-
2005
- 2005-05-12 US US11/127,562 patent/US7141760B2/en not_active Expired - Lifetime
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2006
- 2006-06-30 US US11/428,113 patent/US20080016679A1/en not_active Abandoned
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Also Published As
Publication number | Publication date |
---|---|
US20080016679A1 (en) | 2008-01-24 |
DE10393741T5 (en) | 2005-11-17 |
US20040094534A1 (en) | 2004-05-20 |
US20050199611A1 (en) | 2005-09-15 |
CA2505739A1 (en) | 2004-06-03 |
CA2505739C (en) | 2008-12-30 |
JP4118878B2 (en) | 2008-07-16 |
KR20050086672A (en) | 2005-08-30 |
AU2003288086A1 (en) | 2004-06-15 |
US7223948B2 (en) | 2007-05-29 |
CN1711185A (en) | 2005-12-21 |
JP2006506784A (en) | 2006-02-23 |
US7141760B2 (en) | 2006-11-28 |
DE10393741B4 (en) | 2008-02-14 |
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