The Furukawa Electric Co., Ltd.

Furukawa Magnet Wire Co., Ltd.

Essex Furukawa Magnet Wire Japan Co., Ltd.

Denso Corporation

Dic Corporation

Essex Furukawa Magnet Wire Japan Col, Ltd.

Daisuke Muto

Keiichi Tomizawa

Hideo Fukuda

Makoto Oya

Keisuke Ikeda

Tsuneo Aoi

Dai Fujiwara

Akira Tachibana

Satoshi Naka

Satoshi Saito

Akira Tanaka

Makoto Onodera

Shinji Kouda

Isao Tomomatsu

Hiroyuki Egawa

Hiromitsu Asai

Yohei Ishii

Natsuko Hara

Yousuke Kokubo

Hirofumi Oshima

Fumiaki Abe

An insulated wire including: a conductor; and an insulating film provided on an outer periphery of the conductor, wherein the insulating film satisfies the following relation between a relative permittivity (ε) of the insulating film at 0.2 atm and a relative permittivity (ε) of an outermost layer of the insulating film at 0.2 atm.ε≤3.0 and ε/ε≥1.2.

Insulated wire, coil, and electrical or electronic equipment

Provided are an insulated wire material including: a conductor including a single core conductor or a plurality of divided conductors placed in parallel to each other or helically placed; a peripheral insulating layer with which a periphery of the conductor is coated; and a welding member provided at least one end portion of the conductor and joined, via a welded portion welded to the single core conductor or divided conductors, to at least a peripheral surface of the welded portion, a manufacturing method thereof, a coil including the insulated wire material, and electrical/electronic equipment including the coil.

Insulated wire material and method of manufacturing the same, and coil and electrical/electronic equipment

An insulated wire comprising a conductor and a bubble-containing insulating layer, directly or indirectly coating the outer periphery of the conductor and containing a thermosetting resin, wherein the bubbles in the bubble-containing insulating layer include flattened bubbles whose oblateness in the cross-section perpendicular to the longitudinal direction of the insulated wire (lateral length of the bubble cross-sectional shape/vertical length of the bubble cross-sectional shape) is 1.5 or more and 5.0 or less.

Insulated wire

An insulated wire containing a thermoplastic resin layer (A) as a covering layer directly or indirectly on a rectangular conductor, in which the insulated wire has at least one protruding part which is continuous in a longitudinal direction of said insulated wire, on a surface of a portion of the thermoplastic resin layer (A), which portion corresponds to at least one side of a cross-section of the insulated wire, said protruding part and a flat part of the surface having the protruding part forms a curved portion with a radius of curvature of 0.01 to 0.75 mm in the cross-section of the insulated wire, and a lateral face of the protruding part has a slope of less than 90&#xb0; to the flat part of the surface having the protruding part in the cross-section of the insulated wire, a coil produced by processing the insulated wire by winding, and an electric/electronic equipment comprising the coil.

Insulated wire, coil, and electric/electronic equipments

An assembled wire has a substantially rectangular cross section, and is formed by assembling a plurality of strands. Each strand has a conductor portion and a strand insulating layer covering the conductor portion. At least a part of the assembled plurality of strands in the longitudinal direction is covered with an outer insulating layer. The strand is formed as follows. First, the strand insulating layer is coated on the outer periphery of the conductor portion. A large number of voids are formed in a resin constituting the strand insulating layer. From this state, the strand is formed, for example, by collapsing the strand insulating layer by heating and pressurizing. At this time, it is possible to uniformly collapse the strand insulating layer by crushing the internal voids. Therefore, the voids in the strand are crushed and flattened in the thickness direction of the strand insulating layer over the entire periphery.

Assembled wire, method of manufacturing assembled wire and segment coil

Provided is an assembled wirehaving a substantially rectangular cross section, and is formed by assembling a plurality of strands. Each strandhas a conductor portionand a strand insulating layercovering the conductor portion. The strand insulating layerpreferably contains at least one kind of resin in which 50% weight loss in Tg-DTA occurs at from 300&#xb0; C. to 500&#xb0; C. The strand insulating layercontains particles. The particles are particles having volume resistivity of 1&#xd7;10&#x3a9;&#xb7;cm or more, and, for example, inorganic substances such as silica, titania, alumina, aluminum nitride, magnesium oxide, silicon nitride, and silicon carbide; and resins such as silicone are applicable.

Assembled wire, segmented conductor, and segment coil and motor using the same

Insulated wire, coil and electrical or electronic equipment

An insulated wire, having at least one thermosetting resin layer and at least one thermoplastic resin layer in this order, as covering layers, on a conductor having a quadrilateral cross-section, wherein, in a coating thickness of the covering layers, in each side to be formed on 4 sides of the quadrilateral cross-section of said insulated wire, a difference between the maximum value and the minimum value is each 20 &#x3bc;m or less, and a value of the maximum value divided by the minimum value of the whole sides is 1.3 or more; a motor coil; and an electrical or electronic equipment.

Insulated wire, motor coil, and electrical or electronic equipment

An inverter surge-resistant insulated wire comprising a conductor and an enamel resin-insulating laminate that has a foamed region including cells and a non-foamed region including no cells on at least one surface of the foamed region on the conductor, wherein the foamed region is configured such that a non-cell layer including no cells has cell layers formed of closed cells on both surface sides of the non-cell layer, a thickness of the non-cell layer is larger than a thickness of a partition wall among the closed cells, and 5 to 60% of a thickness of the foamed region, and at least 10 the cell layer in the foamed region is formed of a thermosetting resin; an inverter surge-resistant insulated wire having a conductor and the enamel resin-insulating laminate; and electric/electronic equipment.

Enamel resin-insulating laminate, inverter surge-resistant insulated wire using the same and electric/electronic equipment

An insulated wire having a thermosetting resin layer on the outer periphery of a conductor and a thermoplastic resin layer on the outer periphery of the thermosetting resin layer, wherein a total thickness of the thermosetting resin layer and the thermoplastic resin layer is 100 &#x3bc;m or more and 250 &#x3bc;m or less, and a degree of orientation of a thermoplastic resin in said thermoplastic resin layer, that is calculated by the following Formula 1, is 20% or more and 90% or less; a coil and an electric and electronic equipment each having the insulated wire. Formula 1 Degree of orientation H (%)=[(360&#x2212;&#x3a3;W)/360]&#xd7;100 W: A half width of orientation peak in the azimuth angle intensity distribution curve by X-ray diffraction n: the number of orientation peak at a &#x3b2; angle of 0&#xb0; or more and 360&#xb0; or less.

Insulated wire, coil, and electric or electronic equipment

An insulated wire having a conductor, and a multilayer insulating layer composed of two or more layers coating the conductor, wherein the innermost insulating layer of the multilayer insulating layer is an insulating layer formed of a crystalline thermoplastic resin having a storage elastic modulus of 10 MPa or more at 300&#xb0; C. and outer insulating layer(s) other than the innermost insulating layer include(s) an insulating layer formed of a crystalline thermoplastic resin having a melting point of 260&#xb0; C. or higher and a storage elastic modulus of 1,000 MPa or more at 25&#xb0; C., and adjacent insulating layers have a relationship such that the storage elastic modulus at 25&#xb0; C. of the thermoplastic resin of the outer insulating layer is equal to or smaller than the inner insulating layer; and electric/electronic equipment formed using the insulated wire as a winding and/or lead wire of a transformer that is incorporated into the electric/electronic equipment.

Insulated wire and electric or electronic equipment

An inverter surge-resistant insulated wire has a baked enamel layer(s) around the outer periphery of a conductor having a rectangular cross-section, an extrusion-coated resin layer(s) around the outer side thereof, and an adhesive layer having a thickness of 2-20 &#x3bc;m between the baked enamel layer and the extrusion-coated resin layer. A cross-sectional shape of the baked enamel layer and the extrusion-coated resin layer in the cross-section of the wire is rectangular. In the cross-sectional shape formed by the baked enamel layer and the extrusion-coated resin layer surrounding the conductor in a cross-sectional view, at least a pair of two sides of two pairs of two sides opposing at the upper side and the downside or at the right side and the left side with respect to the conductor meet the conditions that a total thickness of the baked enamel layer and the extrusion-coated resin layer is 80 &#x3bc;m or more.

Inverter surge-resistant insulated wire and method of producing the same

An insulated wire, containing: a conductor; a foamed insulating layer; and an unfoamed filled layer on the outer circumference of the foamed insulating layer, in which the filled layer contains a partial discharge resistant material, which insulated wire has all of high partial discharge inception voltage, resistance to partial discharge, heat resistance, and abrasion resistance (scratch resistance).

Insulated wire, electrical equipment, and method of producing an insulated wire

An insulated wire having a rectangular shaped cross-section, containing: a conductor having a rectangular shaped cross-section; and an insulating layer coated on the conductor, in which the insulating layer has a foamed layer composed of a thermosetting resin containing bubbles, the cross-section of the insulating layer has a shape composed of a flat portion and a corner portion, and the insulating layer satisfies the relationship represented by the following formula:&#x2208;&#x3c;3 and (/&#x2208;)&#x3e;(/&#x2208;)

Insulated wire, and electric/electronic equipments, motor and transformer using the same

An inverter surge-resistant insulated wire, having at least one baked enamel layer around the outer periphery of a conductor, and an extrusion-coated resin layer at the outside of the baked enamel layer, wherein a total thickness of the baked enamel layer and the extrusion-coated resin layer is 50 &#x3bc;m or more, a thickness of the baked enamel layer is 60 &#x3bc;m or less, and a thickness of the extrusion-coated resin layer is 200 &#x3bc;m or less, wherein the minimum of tensile elastic modulus of the extrusion-coated resin layer at a range of 25 to 250&#xb0; C. is 100 MPa or more, wherein a dielectric constant of an insulation layer having a combination of the baked enamel layer and the extrusion-coated resin layer is 3.5 or less at 25&#xb0; C. and 5.0 or less at 250&#xb0; C., and wherein a relation between dielectric constant (&#x2208;1') of the baked enamel layer at 250&#xb0; C. and dielectric constant (&#x2208;2&#x2032;) of the extrusion-coated resin layer at 250&#xb0; C. satisfies (&#x2208;2&#x2032;/&#x2208;1&#x2032;)&#x3e;1.

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Tokyo, Japan

Daisuke Muto