Denso Corporation

The Furukawa Electric Co., Ltd.

Dic Corporation

Furukawa Magnet Wire Co., Ltd.

Hiromitsu Asai

Atsuo Ishizuka

Takashi Aoki

Shinji Kouda

Keisuke Ikeda

Makoto Oya

Keiji Kondou

Daisuke Muto

Akio Sugiura

Tsuneo Aoi

Shinichi Matsubara

Atsushi Higashiura

Hiroshi Kaneiwa

Dai Fujiwara

Mitsuyuki Hayashi

Yoshinori Tatematsu

Yoki Tsujimori

Naruhiko Inayoshi

Fumiaki Abe

Yoshihisa Kano

Tatsunori Makishima

A rotating electric machine includes a pair of electric conductors for forming a coil and a weld. Each of the electric conductors has an end portion with an end surface. The weld is formed between the end portions of the electric conductors at the end surfaces of the end portions. Moreover, the end portions of the electric conductors are arranged so that parts of the end portions of the electric conductors adjoin each other. At least one of the end portions of the electric conductors has at least one slit formed therein to divide the end surface of the end portion into a plurality of sections. The weld is formed to cover, at least, the adjoining parts of the end portions of the electric conductors and the at least one slit.

Rotating electric machine and method of manufacturing same

A rotating electric machine includes a weld formed by welding end portions of a pair of electric conductors for forming a coil and a weld-insulating member that covers, at least, a surface of the weld. The weld has an uneven portion formed on at least part of the surface thereof. The uneven portion is constituted of a plurality of annular recesses and a plurality of annular protrusions. The annular recesses are formed alternately and continuously with the annular protrusions.

Insulated wire

An inverter surge-resistant insulated wire, having an enamel baked layer, an adhesive layer, and an extrusion-coated resin layer, around the outer periphery of a conductor, wherein the sum of the thickness of the enamel baked layer, the extrusion-coated resin layer, and the adhesive layer is 60 &#x3bc;m or more, wherein the thickness of the enamel baked layer is 50 &#x3bc;m or less, and wherein the extrusion-coated resin layer is formed from a polyphenylene sulfide resin composition, which contains a polyphenylene sulfide polymer having a melt viscosity at 300&#xb0; C. of 100 Pa&#xb7;s or more, 2 to 8 mass % of a thermoplastic elastomer, and an antioxidant, and which has a tensile modulus of elasticity at 25&#xb0; C. of 2,500 MPa or more, and a tensile modulus of elasticity at 250&#xb0; C. of 10 MPa or more.

There is disclosed an insulated wire, having, on a conductor, an insulating coating including at least three layers, made up of an underlayer formed by applying and baking a polyamine-imide-series resin coating material, containing 0.05 to 1.0 parts by weight of a trialkylamine, and/or 5 to 20 parts by weight of an alkoxylated melamine resin, per 100 parts by weight of a polyamide-imide-series resin, an intermediate layer formed by applying and baking a polyimide-series resin coating material, and an overlayer formed by applying and baking a self-lubricating-type polyamide-imide-series resin coating material. According to the insulated wire, an insulating coating can be prevented from being damaged at the time of the working of a coil under severe conditions, even when the insulating coating is thin.

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Nagoya, Japan

Hiromitsu Asai