Mitsubishi Electric Corporation

Ryuichi Shimomura

Masaya Inoue

Hiroyuki Akita

Toshiyuki Yoshizawa

Masao Morita

Kazunori Tanaka

Shinji Nishimura

Moriyuki Hazeyama

Kanji Shinkawa

Takeshi Mori

Atsushi Sakaue

Yoshiharu Hayashi

Yutaka Ikura

Takumi Nakaue

Hirokazu Akai

Yoshinobu Sugimoto

Shinji Sano

Tomoki Sagayama

Takuma Wada

Kazuya Nakamachi

The rotor of the rotary electric machine according to the present invention includes: a cylindrical rotor core; magnets that are respectively housed in a plurality of magnet housing apertures that are formed circumferentially so as to pass axially through an outer circumferential side of the rotor core; and a rotor boss that includes: a cylindrical rotor ring that holds the rotor core; an annular mounting portion that is linked to the crankshaft so as to be disposed coaxially at a first axial end inside the rotor ring; and a linking plate that links the rotor ring and the mounting portion, and the linking plate is formed so as to have a curved shape that is convex toward a second axial end of the rotor boss, and has a thickness that reduces continuously from a radially inner side toward a radially outer side.

Rotary electric machine

In an embedded magnet rotor for a rotary electric machine, permanent magnets are respectively accommodated in magnet housing apertures that pass axially through a rotor core that is held by a shaft, an adhesive is injected into and cured in gaps between the permanent magnets and the rotor core in the magnet housing apertures, and fixes the permanent magnets to the rotor core, a first end plate is held by the shaft so as to contact a first axial end of the rotor core, and blocks first axial end openings of the plurality of magnet housing apertures, and a fill rate of the adhesive that is injected into the gaps is increased gradually from a first axial end toward a second axial end of the magnet housing apertures.

Embedded magnet rotor for rotary electric machine having gaps with adhesive fill rates

Provided is a rotor structure of a rotary electric machine, which is easily adaptable to offer a wide variety of products. The rotor structure of a rotary electric machine includes at least: a rotor shaft (); a rotor core including a first rotor core section () and a second rotor core section (); a boss section (); and a pressurizing section. The second rotor core section and the boss section are arranged on an outer circumference of the rotor shaft. The first rotor core section is arranged on an outer circumference of the boss section. The pressurizing section is positioned on an axially outer side of the rotor core. The second rotor core section is pressurized by an abutment surface of the boss section. The first rotor core section arranged on the boss section is pressurized by the pressurizing section.

Rotor structure of rotary electric machine

The present invention relates to a rotating electric machine stator that includes connecting members for connecting jumper wires to each other between neighboring magnetic pole coils of the rotating electric machine stator, and its manufacturing method. In a conventional connecting member, its portions to be connected to the jumper wires are figure-U shaped and have openings on the opposite side to a core's end-face where the jumper wires are disposed, so that, in order to insert the jumper wires into the openings, complex drive controls have been required for the connecting portions being figure-U shaped. In order to simplify the drive controls, such connecting portions being made in curved shapes have openings each facing the end-face of a core. It is possible to generally apply the present invention to rotating electric machine stators that obey coil connection specifications.

Stator for rotating electric machine and manufacturing method for the same

Dynamoelectric machine having holding grooves recessed into yoke portions with openings on respective facing portions of inner wall surfaces of trough portions, at axially inner ends of the yoke portions, having axial groove directions, and an end surface in a groove length direction constitutes a stopping surface. Magnet material holders are disposed spanning the trough portions radially inside inner circumferential surfaces near tip ends of claw-shaped magnetic pole portions, fitted from axially inside into each holding groove, are recessed to face each other on the trough portions restricting circumferential and radial motion by inner wall surfaces of the holding grooves and axially outward movement restricted by the stopping surface. Interfitting grooves having openings on surfaces facing the inner circumferential surfaces near the tip ends, having axial groove directions, and passing through in the axial direction, and permanent magnets fitted into the interfitting grooves are held by the magnet material holders.

Dynamoelectric machine and method for manufacturing a rotor therefor

The present invention provides a dynamoelectric machine that enables heat that is generated in a permanent magnet to be transmitted to a fan and be radiated from the fan effectively, that suppresses occurrences of damage to the fan that result from centrifugal forces that act on the permanent magnet, and that also enables the fan to be prepared easily and inexpensively. In a dynamoelectric machine according to the present invention, a magnet holder () that is made of a magnetic material is disposed so as to span over a trough portion (), an interfitting groove () that has a groove direction in an axial direction is formed on the magnet holder () so as to open radially outward, and so as to lead inward from an axially outer side, and a permanent magnet () is held by the magnet holder () by being fitted into the interfitting groove () and is disposed so as to face an inner circumferential surface near a tip end of claw-shaped magnetic pole portions () and have a predetermined clearance. In addition, a metal fan (A,B) is fixed to an end surface of a pole core body (), a thermally conductive plate () is disposed so as to extend from a base portion () axially inward, and a leading end portion thereof is press-fitted between a lower surface of the permanent magnet () and a bottom surface of the interfitting groove ().

Dynamoelectric machine

An automotive dynamoelectric machine that achieves disposing of permanent magnets and thickening of field coil wire by disposing trough portions on yoke portions and disposing magnet holders that hold the permanent magnets so as to span the trough portions to ensure outlet space for field coil lead wires. In the dynamoelectric machine, trough portions are formed on respective portions of yoke portions between circumferentially adjacent claw-shaped magnetic pole portions, a magnet holder is disposed so as to span over a trough portion, and a permanent magnet is held by the magnet holder. A lead wire is led out of a rotor from a field coil so as to pass through a space that is bounded by the trough portion and the magnet holder.

Automotive dynamoelectric machine

A dynamoelectric machine that can suppress increases in rotor inertia to extend belt service life and increase field magnetomotive force to increase output. In the dynamoelectric machine, first and second magnetic guidance members are fitted into first and second holding grooves that are disposed so as to extend axially on facing portions of first and second trough portions radially outside inner wall surfaces, and are disposed so as to span over first and second trough portions. First and second permanent magnets that are magnetically oriented in a reverse direction to a magnetic field that originates from a field coil are fitted into and held by interfitting grooves of the first and second magnetic guidance members so as to face inner circumferential surfaces near tip ends of second and first claw-shaped magnetic pole portions so as to have a predetermined clearance.

The present invention provides a dynamoelectric machine that enables permanent magnets to be held stably in trough portions that are formed on portions of a yoke portion that are positioned between adjacent claw-shaped magnetic pole portions. In a dynamoelectric machine according to the present invention, first and second magnet holders are disposed so as to span first and second trough portions that are formed on portions of first and second yoke portions that are positioned between circumferentially adjacent first and second claw-shaped magnetic pole portions, and first and second permanent magnets are held by the first and second magnet holders so as to face inner circumferential surfaces near tip ends of the claw-shaped magnetic pole portions so as to have a predetermined clearance.

Resin pooling grooves are disposed so as to extend over entire regions in a thickness direction of a first magnet holder on two sides of a bottom surface in a width direction of a first receiving groove, and resin pooling grooves are also disposed so as to extend over entire regions in the thickness direction of the first magnet holder on two side surfaces of the first receiving groove near the bottom surface. A first resin injection aperture is disposed through the first magnet holder so as to communicate with the resin pooling grooves over an entire region in the thickness direction. A first permanent magnet is held by the first magnet holder by fitting the first permanent magnet into the first receiving groove together with a first magnet cover, and injecting a resin material into the resin pooling grooves through the first resin injection aperture and hardening it.

Growing community of inventors

Tokyo, Japan

Ryuichi Shimomura