Denso Corporation

The Furukawa Electric Co., Ltd.

Furukawa Magnet Wire Co., Ltd.

Shinichi Matsubara

Shigenobu Nakamura

Hiroshi Ishida

Takashi Aoki

Masatoshi Koumura

Yoshiki Tan

Shinya Oowatari

Tsutomu Shiga

Shin Kusase

Atsushi Umeda

Keisuke Ikeda

Makoto Oya

Takuzou Mukai

Yoshinori Hayashi

Mitsuru Kato

Akihito Koike

Akio Sugiura

Akiya Shichijyo

Nakato Murata

Kazuhide Sato

Yoshio Naka

Hiromitsu Asai

Yoshihisa Kano

Tatsunori Makishima

An automotive alternator includes a stator winding that is made of a metal other than copper and copper alloys. The alternator also includes a built-in rectifier that includes a plurality of rectifying elements and a plurality of electrical conductors. The rectifying elements and the electrical conductors together form a rectification circuit for rectifying AC power output from the stator winding into DC power. Further, at least one of the electrical conductors includes first and second portions. The first portion is connected to at least one of the rectifying elements, and made of copper or a copper alloy. The second portion is connected to the stator winding, and made of a metal containing a metallic element that is also contained in the metal of which the stator winding is made.

Automotive alternator including rectifier terminal having two portions made of different metals

Insulated wire

In a rotary electric machine, a first group of first and second sets of three-phase windings of a stator coil is disposed in part of substantially circumferentially spaced slots of a stator core, and a second group of third and fourth sets of three-phase windings of the stator coil is disposed in another part of the slots. The first to fourth sets include first to fourth three-phase windings, respectively. Output ends of the first to fourth three-phase windings and input ends of the second and fourth windings are disposed at one of opposing end surface sides of the stator core. The output ends of the first and second three-phase windings of the first and second sets included in the first group are separated from the output ends of the third and fourth three-phase windings of the third and fourth sets included in the second group.

Rotary electric machine and stator coil rotary electric machines

In a vehicular alternator having a permanent magnet protection mechanism, each magnet holder of a non-magnetic characteristic if a rectangle prism shape accommodates each permanent magnet disposed between adjacent claw poles. The magnet holders are connected in a ring shape along a circumferential direction of the alternator by using each connecting plate part which extends from each magnet holder in approximate circumferential direction toward an inner side of and at a front tip part of each claw pole. The connecting plate parts and the magnet holders are made from a non-magnetic plate by cutting and bending. Making the surfaces and the connecting plate part of each magnet holder from the non-magnetic plate by cutting and bending provides a high accuracy magnet position in the alternator with low manufacturing cost.

Vehicular alternator and method of producing the same

A rotary electric machine, such as a vehicular AC generator, including a rotor rotatably driven; and a stator having a stator iron core disposed to face the rotor and stator windings mounted at the stator iron core, the stator windings being composed of a plurality of electric conductors made from aluminum and copper. For example, the plurality of stator windings are different in materials from each other winding by winding, the materials being either the aluminum or the copper. Alternatively, the plurality of stator windings include windings each being made, part by part, from different materials, the different materials being the aluminum and the copper.

Rotary electric machine for vehicles

A vehicle alternator has an armature coil, a rectifier, and a terminal connector. The armature coil has a substantial rectangular cross-section. The rectifier rectifies a voltage induced at the armature coil. The terminal connector includes a crimping portion and a connecting portion. The crimping portion is crimped onto a lead of the armature coil. The connecting portion is fixed to an input terminal of the rectifier with a screw. The crimping portion of the terminal connector is crimped onto the lead so that two opposed surfaces of the lead have surface contact with the terminal connector.

Vehicle alternator having impact and vibration resistant terminal connection

A rotary electric machine for a vehicle has a stator having a stator winding. The stator winding is made of a plurality of segments. The segments are partly accommodated in a plurality of slots and are arranged to form coil ends groups on both axial sides. The segments are insulated from the stator core by a sheet shaped insulator inserted only along an inner surface of the slot. The segments have bare segments having no insulating layer and covered segments having insulating layer thereon. The bare segments are arranged to surround the covered segments so that the bare segments are not adjacent to the other bare segments in the slots and the coil ends groups.

Stator arrangement of rotary electric machine for vehicle

In a stator of a vehicle ac generator, a slot insulator has a portion closing the opening of a slot. Therefore, portions of the stator winding disposed in the slot can be retained in the slot without an additional member, and water or the like can be shut out.

Vehicle AC generators stator and method of manufacturing the same

In an insulation structure of a rotary electric machine, a stator winding has connection portions covered with reliable insulation resin coating. The modulus of elasticity of the insulation resin is less than a value which may not cause the insulation resin coating to peel off. The modulus of elasticity changes with the thickness of the insulation resin coating.

Stator insulation structure of rotary electric machine

In a stator of an ac generator for vehicle, a plurality of insulators are disposed in the slots of the stator to insulate the stator winding from the stator core. Each of the insulators has a smooth edge at one end and a stopper portion at the other end. The stopper portions project from an axial end of the stator core from which conductor segments of the stator winding are inserted. The conductor segments can be inserted into the slots with the smooth edges being at the head and can be easily positioned in the slots by the stopper.

Stator of AC generator for vehicle

A rotor of an alternator which is composed of a Lundell type core has a wire wound spirally around the rotor. The wire binds the claw poles at equal intervals from the tip to the base of each claw pole, thereby restricting the radial expansion of the claw poles due to centrifugal forces. The wire is made of a non-magnetic material, and is received in grooves formed on the outer circumferential surface collectively formed by the claw poles.

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Anjo, Japan

Shinichi Matsubara