Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Ryodin Kasei Co., Ltd.

Hiroki Katayama

Yoshihito Asao

Katsumi Adachi

Atsushi Oohashi

Naohiro Oketani

Katsuhiko Kusumoto

Takushi Takizawa

Hitoshi Tokuyama

Tomotaka Makino

A stator coilis installed in a stator core, and an insulating resin is impregnated into slot portionsand hardened. The stator coilis constituted by enameled wires in which a polyamideimide resin layer has been applied radially outside a copper wire and hardened, and the insulating resin contains as a major component a THEIC-modified polyester resin that has been modified by a fatty acid.

Dynamoelectric coil portion insulating construction

A stator for a rotary machine includes a rotor and a stator having a stator iron core disposed oppositely around the outer circumference of the rotor and a stator coil fitted around the iron core wherein the iron core has a laminated iron core with plural axially extending slots formed circumferentially at predetermined pitches, an insulating resin is coated on an axial end face of the iron core and an inner wall face of a slot in the laminated iron core to provide insulation between the iron core and the stator coil and the iron core is cylindrically shaped by bringing both circumferential end portions of the laminated iron core into contact to bend the laminated iron core so that an opening face of the slot is directed inside.

Stator for rotary machine and method of manufacturing the stator

An electrically-insulating resin portion is formed by applying a resin so as to cover apex portions of coil ends forming a coil end group, that is, weld portions and surfaces of portions where an insulation coating has been removed from free ends of coil segments which constitute joint portions between the free ends. Spaces between radially-adjacent joint portions may be filled by the electrically-insulating resin portion. In addition, air passage spaces may be ensured between circumferentially-adjacent joint portions.

Stator for an alternator

A stator of a vehicular alternating current generator comprising: a stator core having slots; and a stator coil wound in the slots of the stator core; wherein a resin having a peak or peaks of a loss tangent which is a value of a loss elastic modulus divided by a storage elastic modulus in a temperature range of from 100.degree. C. to 250.degree. C. is provided among coil strands of the stator coil and/or between the stator core and the stator coil.

Stator of a vehicular alternating current generator and its

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Tokyo, Japan

Hiroki Katayama