Mitsubishi Electric Corporation

Mitsubishi Denki Kabushiki Kaisha

Oki Electric Industry Co., Ltd.

Hiroyuki Akita

Masaya Inoue

Atsushi Sakaue

Hironori Tsuiki

Akira Hashimoto

Toshiyuki Yoshizawa

Yoshihito Asao

Masaki Kato

Shinji Nishimura

Kanji Shinkawa

Moriyuki Hazeyama

Yuji Nakahara

Masao Morita

Ryuichi Shimomura

Hiroyuki Sasao

Sachiko Kawasaki

Toshie Takeuchi

Yukimori Kishida

Toshio Arai

Haruyuki Kometani

Tatsuro Hino

Nobuaki Miyake

Koji Kawamura

Daisuke Shijo

Keiichiro Oka

Atsushi Oohashi

Kazunori Tanaka

Masashi Nakamura

Masatsugu Nakano

Toshiaki Kashihara

Kenichi Koyama

Wakaki Miyaji

Shinichiro Yoshida

Mitsuru Tsukima

Takushi Takizawa

Norihiro Murata

Syuuichi Tamura

Kimiyasu Furusawa

Takumi Nakaue

Takeshi Mori

Yoshinori Shimizu

Shogo Okamoto

Keiichi Komurasaki

Tetsuya Matsuda

Tomoaki Oikawa

Hitoshi Isoda

Yoshinori Miyamoto

Hidemoto Arai

Kunihiko Kaga

Katsuhiko Kusumoto

Kohei Egashira

Shinkichi Sawa

Naohiro Motoishi

Ryuichi Nishiura

Kazuaki Aono

Akira Doi

Kazuhiro Odawara

Osamu Kazama

Yutaro Shirai

Kazunori Muto

Yasuo Fujiwara

Tsuneyoshi Tajima

Katsumi Adachi

Masahiko Fujita

Hiroyuki Yasuda

Akihiro Yamamura

Tsuyoshi Takahashi

Yutaka Kitamura

Masao Kikuchi

Yu Hirotani

Naohiro Oketani

Yusuke Morita

Yoshihiro Harada

Akira Satake

Mitsuharu Hashiba

Hiroyasu Iwabuki

Takashi Yoshioka

Koji Kise

Takatoshi Masuda

Takanori Ichikawa

Yasunari Hino

Kazuhiko Kagawa

Keiichi Ito

Nobuaki Uehara

Yutaka Hirota

Kosuke Nakano

Kazuo Matsunaga

Koji Tamura

Kouki Naka

Kouji Kawamura

Chie Takahashi

Tetsunao Takaki

Tetsuya Yokogawa

Satoru Naito

Yoichi Sugiyama

Youichi Sugiyama

Hiroyuki Waku

Kazuaki Hirota

Masaya Motohashi

Yukinobu Karata

A stator core of a rotary electric machine includes: an outer core that is an annular back yoke portion; and an inner core in which a plurality of teeth are radially arranged and inner side end portions of the teeth adjacent to each other in a circumferential direction are connected to each other in the circumferential direction by connection portions and which is fitted to an inner side of the outer core, each connection portion has a hole penetrating in an axial direction, each connection portion is split into a plurality of sections by the hole, a width in a radial direction of the one connection portion at a portion of the connection portion that has a smallest width in the radial direction is equal to or greater than &#xbc; and less than &#xbd; of a sheet thickness of each of sheets.

Stator for rotating electric machine, and rotating electric machine

A unit coil includes: first, second, third, and fourth turn portions extending in a bent manner from first, second, third, and fourth slot accommodation portions and each connecting the slot accommodation portions to each other; and first, second, third, and fourth leg portions. Recesses are formed in surfaces opposed to each other at bent parts of the turn portions or bent parts of the turn portion and the leg portion, that extend in a bent manner toward the same side in the circumferential direction from the slot accommodation portions adjacent to each other in the radial direction.

Rotating electric machine and rotating electric machine manufacturing method

A stator is assembled by stacking, in the axial direction, a plurality of magnetic steel sheets having tooth portions. The steel sheets include connected tooth steel sheets in which the inner-circumferential-side end portions of the tooth portions are connected via connection portions in an annular shape along the circumferential direction, and non-connected tooth steel sheets which are separated from each other with the tooth portions not connected to each other. The connected tooth steel sheets and the non-connected tooth steel sheets are joined to each other in the axial direction via swage portions provided in the tooth portions. The thickness of each connection portion is smaller than the thickness of the other part of each steel sheet.

Rotary electric machine including an inner core formed of steel sheets with connected and non-connected tooth portions and manufacturing method therefor

A manufacturing method for a stator winding coil includes: a bulging portion forming step that forms a bulging portion on a conductor wire; a crank portion forming step that forms a crank portion on the central portion of the bulging portion; an oblique portion forming step that forms oblique portions on the conductor wire at two ends of the bulging portion; a rectilinear portion forming step that forms rectilinear portions on the conductor wire at opposite ends of the oblique portions from the bulging portion; and a circular arc forming step that forms the oblique portions into a circular arc shape after forming the rectilinear portions.

Manufacturing method for stator winding coil

The wire rope flaw detector includes: buffer members provided on both sides of the probe in an axial direction of the wire rope and between a connecting member and the probe. The connecting member is configured to connect a first and a second position regulation mechanism with each other, and is configured to guide the wire rope. The buffer members are made of a material satisfying conditions that, during running of the wire rope, a vibration frequency of the buffer members becomes lower than the vibration frequency of vibration generated by the first and the second position regulation mechanism, and have an inherent vibration frequency larger than the vibration frequency of the vibration having a largest amplitude among vibration components of the wire rope. The adjustment jig is used at an initial adjustment so that a guide groove of the probe is supported by the position regulation mechanisms without contact.

Wire rope flaw detection device and adjustment jig

A stator in which stator coils are formed by a plurality of unit coils arranged so as to be shifted from each other in the circumferential direction and each having: a first slot-accommodated portion; a second slot-accommodated portion; a first terminal wire extending from the first slot-accommodated portion; a second terminal wire extending from the second slot-accommodated portion and shifted from the first terminal wire by one line of a conductive wire; a terminal-side coil end portion; and first and second anti-terminal-side coil end portions, wherein the first terminal wire and the second terminal wire of the respective different unit coils are joined with each other.

Stator formed by winding stator coils, rotary electric machine using said stator, method for manufacturing stator formed by winding stator coils, and method for manufacturing rotary electric machine

A stator winding is formed by mounting winding bodies individually into pairs of slots of a stator core separated by a predetermined number of slots, the winding bodies each being formed by winding a jointless, continuous conductor wire coated with insulation for m turns into a helical shape such that end portions of rectilinear portions are linked by coil ends, where m is a natural number that is greater than or equal to two, and the coil ends include a top portion that displaces by a predetermined amount in a radial direction at an approximately central portion between the linked rectilinear portions, the radial displacement at the top portions is approximately a&#xd7;d, where a is a natural number that is greater than or equal to 1 and less than or equal to (m&#x2212;1), and d is a radial thickness of the rectilinear portions.

Rotary electric machine with armature coil end top portions displaced in a radial direction

A contour line on the outer circumferential side of each magnet hole in the first layer is formed to be an arc passing through a total of three intersections, i.e., an intersection of a d axis and a reference magnetic flux line which is a magnetic flux line as a reference positioned inward by a predetermined number of magnetic flux lines from the outer circumferential edge of a rotor core, and intersections of: the reference magnetic flux line; and sides at the circumferential ends of the magnet hole which are positioned inward by a bridge dimension from the outer circumferential edge of the rotor core. Thus, a rotary electric machine that enables maximum utilization of reluctance torque and magnet torque and suppression of torque ripple can be obtained with simple processing and low cost.

Rotary electric machine

Winding bodies are configured such that radially inner terminals of a conductor wire extend outward at a first axial end of an armature core from a radially innermost position inside slots, and radially outer terminals of the conductor wire extend outward at the first axial end of the armature core from a radially outermost position inside the slots, and respective phase windings of an armature winding are configured by directly joining together the radially inner terminals and by directly joining together the radially outer terminals of the winding bodies that constitute identical phases.

The armature winding is configured by mounting into slot pairs n types of winding bodies that are each configured by winding a conductor wire for m turns into a helical shape, where m is a natural number that is greater than or equal to two, the n types of winding bodies have different spacings between rectilinear portions that are linked by coil ends, are housed in n adjacent pairs of slot pairs, and are configured so as to be concentric, the coil ends include a top portion at an approximately central portion, and the radial displacement at the top portion is approximately a&#xd7;d, where a is a natural number that is greater than or equal to 1 and less than or equal to (m&#x2212;1), and d is a radial thickness of the rectilinear portions that are housed inside the slots.

A rotating electric machine with a built-in control device that can be downsized. The rotating electric machine with a built-in control device includes a rotor including a permanent magnet of sensor use provided on a rear side of a rotor shaft, a front side housing fixed with a first bearing supporting a front side of the rotor shaft, a motor frame including a rotor and a stator, a heat sink fixed with a second bearing supporting the rear side of the rotor shaft, a control substrate mounting a rotary sensor, a microcomputer, and a driving circuit. The microcomputer controls the driving circuit based on signals from the rotary sensor and drives a plurality of switching elements. At least one of a smoothing condenser and a noise reduction coil, connected to the switching elements, is arranged at a far rear side of the control substrate.

Rotating electric machine with a built-in control device and electric power assist steering system

First and second winding bodies are each configured so as to have a helical shape by winding a conductor wire for m turns, where m is a natural number that is greater than or equal to two, an armature winding is configured by mounting two-lane winding bodies into respective pairs of slots, two-lane winding bodies being configured by assembling the first and second winding bodies, the coil ends include a top portion that displaces in a radial direction at a central portion, and the radial displacement at the top portion is a&#xd7;d, where a is a natural number that is greater than or equal to 2 and less than or equal to 2&#xd7;(m&#x2212;1), and d is a radial thickness of the rectilinear portions, 4&#xd7;m of the rectilinear portions being housed inside the slots so as to line up in single columns.

Rotary electric machine and method for manufacturing an armature that is used in the rotary electric machine

In a rotary electric machine according to the present invention, an armature winding includes a plurality of distributed winding bodies that are each produced by winding a single conductor wire that is insulated, that is jointless and continuous, and that has a constant cross-sectional area perpendicular to a longitudinal direction, the conductor wires include first through third coil end portions that link first through fourth rectilinear portions and first through fourth rectilinear portions, and are formed such that radial widths w' of the first through fourth rectilinear portions are wider than radial widths w of the first through third coil end portions.

Rotary electric machine and manufacturing method therefor

An armature for an electric machine according to the present invention includes: an armature core in which a plurality of slots are arranged in a circumferential direction; and an armature winding that is mounted to the armature core, and includes a plurality of two-lane winding bodies that are each produced by stacking and winding two jointless continuous conductor wires that are coated with insulation such that the two conductor wires are stacked in a radial direction of the armature core, the two-lane winding bodies being arranged at a pitch of one slot in a circumferential direction so as to be mounted into a third slot, a first slot, and a second slot that line up consecutively in the circumferential direction at an angular spacing of six slots.

Armature for an electric machine

Bridge portions forming coil end portions, at both ends in an axial direction, of a stator of the rotating electrical machine according to the present invention are configured coaxially about an axis of the stator; at least one bridge portion of the bridge portions of each coil at both ends in the axial direction is located outward of an inner peripheral surface of the stator; and a gap is present between an end surface of a stator core in the axial direction and each bridge portion.

Production method for rotating electrical machine

Growing community of inventors

Tokyo, Japan

Hiroyuki Akita