Kobe Steel, Ltd.

Shumpei Hayashi

Koji Inoue

Tetsuya Ogawa

Takashi Hiekata

Hiroaki Kawai

Shintaro Sasai

Toshiro Yamashita

Hiroshi Hashimoto

Shingo Kasai

Takashi Tokuyama

Hiroyoshi Matsui

Ryo Shimada

Tsuyoshi Miyazaki

Tomohiro Taira

Provided is a linear motor capable of having enhanced thrust density. The linear motor includes a magnetic pole element and an armature including coils. The magnetic pole element includes magnetic pole element cores and permanent magnets. The magnetic element cores include first cores, second cores, third cores, and fourth cores, each aligned in the linear motion direction. The permanent magnets are interposed between mutually adjacent magnetic element cores among the magnetic element cores. The armature is divided into a first armature portion opposed to the first and third cores, a second armature portion opposed to the first and second cores, a third armature portion opposed to the third and fourth cores.

Linear motor

Provided are a magnetic field generating device and an electric motor with which it is possible to generate a large amount of magnetic flux using a simple construction. The magnetic field generating device is provided with a magnetic pole element, a facing magnetic body opposing the same in an opposing direction, and an inner support member. The magnetic pole element includes a plurality of first iron cores, a plurality of second iron cores, a plurality of third iron cores, a plurality of fourth iron cores, and a plurality of back surface permanent magnets. Each of the plurality of first to fourth iron cores has a magnetic pole surface opposing the facing magnetic body and a back surface on the opposite side thereto, and the plurality of back surface permanent magnets are disposed on the back surfaces of each of the plurality of first to fourth iron cores. The plurality of first and third iron cores are arranged alternately in a first arrangement direction perpendicular to the opposing direction, to form a first iron core row. The plurality of second and fourth iron cores are arranged alternately in the first arrangement direction to form a second iron core row. The inner support member is positioned between the first iron core row and the second iron core row, and supports each of the first iron core row and the second iron core row on both sides of the inner support member in a second arrangement direction.

Magnetic field generating device and electric motor including the same

An electric motor includes an armature and a mover. The armature includes an armature coil. The mover includes a plurality of pole blocks each including an iron core disposed to face the armature and a plurality of permanent magnets which surround the iron core such that a surface of the iron core, which faces the armature, is open. The plurality of permanent magnets in each pole block are disposed such that magnetic poles thereof facing the iron core are equal in polarity.

Electric motor

The present invention is to provide a launcher for an underwater vehicle by which thrust force of a mover arranged movably in a water conducting tube can efficiently be obtained. The mover forms a plurality of magnetic circuits in which magnetic flux generated by a plurality of permanent magnets flows, and the plurality of magnetic circuits includes a first magnetic circuit in which the magnetic flux flows through one of a pair of circumferential magnets, a second magnetic circuit in which the magnetic flux flows through one of a pair of axial magnets, the second magnetic circuit being formed in parallel to the first magnetic circuit, and a third magnetic circuit in which the magnetic flux flows through a radial magnet, the third magnetic circuit being formed in parallel to the first magnetic circuit and the second magnetic circuit, respectively.

Launcher for underwater vehicle

An axial gap type dynamo-electric machine () comprises: a stator () provided with a magnetic core () and an exciting coil (); a rotor () provided with a plurality of permanent magnets () circumferentially arranged around a rotation center axis (AX), the rotor () being also provided with a disk-shaped base material () for supporting the permanent magnets, the rotor () being disposed at an axial distance from the stator (); and affixation members () for affixing the permanent magnets () to the base material (). The permanent magnets () are provided with front surfaces facing the stator (), rear surfaces facing the base material, and engagement-receiving sections () formed at peripheral edges of the permanent magnets (). The affixation members () include: engagement sections () engaging the engagement-receiving sections; and affixation sections () forming mechanical affixation structures relative to the base material.

Axial-gap rotating electric machine

Growing community of inventors

Kobe, Japan

Shumpei Hayashi