Kabushiki Kaisha Toshiba

Toshiba Industrial Products Manufacturing Corporation

Other

Aishin Aw Co., Ltd.

Yukihiko Kazao

Norio Takahashi

Takeshi Araki

Masanori Arata

Masakatsu Matsubara

Takashi Araki

Yasuo Hirano

Motoyasu Mochizuki

Yutaka Hashiba

Takashi Hanai

Nobutake Aikura

Masanori Ohashi

Masahiko Yamashiki

Kazuto Sakai

Yasuo Kabata

Yoshihiro Taniyama

Ken Takeda

Shigeo Nakagaki

Hideya Kohara

Tadashi Shudo

Makoto Mikami

Hidekazu Shiomi

Ikuo Saito

Akito Kondou

Takeshi Hayashi

Akito Kondo

Hiroshi Morohashi

Hydrogen gas is circulated to cool an electric rotating machine main body, and brush seals are provided to contact a predetermined position on the outer circumferential surface of a rotating shaft. As a result, contact of a sealing oil and the hydrogen gas, contact of a lubricating oil and the sealing oil in the bearing, and leakage of the hydrogen gas outside the machine are prevented.

Electric rotating machine with bearing seals

A rotor for a reluctance type rotating machine includes a rotor core formed by stacking a number of annular core materials each of which includes magnetic concave and convex portions. The rotor core has two keys which are formed at two positions on an inner circumference of the rotor core. The positions are spaced 180 degrees apart from each other with respect to the rotor core. The rotor core is divided into a plurality of blocks and the core materials constituting at least one block have the magnetic concave and convex portions shifted by a predetermined angle relative to the core materials constituting the other or another block on the basis of a center line passing through the keys. A whole or part of the core materials of at least one block are located circumferentially 180 degrees apart form the core materials constituting the other or another block.

Rotor for reluctance type rotating machine

A rotor for a reluctance type rotating machine includes a rotor core formed by stacking a number of annular core materials each of which includes magnetic concave and convex portions alternately formed on an outer circumference thereof and a central through hole, the rotor core having a key axially extending on an outer circumference, the rotor core being divided into a plurality of blocks, the core materials constituting one of at least three blocks having the magnetic concave and convex portions shifted by a predetermined angle in one of a rotating direction of the rotor and a direction opposite the rotating direction of the rotor relative to a center line passing the key, the core materials constituting each one of the blocks located at both ends of the one block having the magnetic concave and convex portions shifted by a predetermined angle in the other of the rotating direction of the rotor and the direction opposite the rotating direction of the rotor relative to a center line passing the key, and a rotational shaft inserted through the central hole of the rotor core, the shaft having a key groove engaging the key of the rotor core.

Permanent magnets are arranged to be supported by the provision of permanent magnet position-locating projections ( ) in permanent magnet embedding holes ( ). By optimizing the shape of thin-wall regions ( ) and ( ) within rotor core ( ), leakage of flux generated from the permanent magnets is reduced and the strength of the thin-wall regions where stress is concentrated is ensured.

Permanent magnet reluctance motor with embedded permanent magnet holes

Vibration control apparatus for elevator

Growing community of inventors

Yokohama, Japan

Yukihiko Kazao