Toyota Jidosha Kabushiki Kaisha

Kensuke Komori

Kazuaki Haga

Shinya Sano

Keiu Kanada

Masaaki Ito

Mayumi Takazawa

Takuya Nomura

Shingo Fubuki

Toshimitsu Takahashi

Yasuhide Yagyu

Takeshi Tomonaga

Hisanori Koma

Tatsuhiko Hirano

Hiroaki Wakimoto

Airi Kamimura

Akira Yamashita

Daisuke Ichigozaki

Shinichi Hiramatsu

Fumitaka Yoshinaga

Yu Takanezawa

Katsuhiko Tatebe

Shinya Urata

Hideki Manabe

Hisamitsu Toshida

Yoshitaka Maeda

Tomohiro Takao

Provided is a rare earth magnet that allows suppressing deterioration of magnetic properties and a method for manufacturing the same. The rare earth magnet of the present disclosure includes a magnet body containing a rare earth element R1, a transition metal element T, and boron B and includes a main phase. A region in the vicinity of a corner portion of the magnet body of a constituent surface constituting a surface of the magnet body is a processed surface on which a removal process has been performed, and a region closer to a center than the region in the vicinity of the corner portion of the constituent surface is a non-processed surface on which the removal process is not performed.

Rare earth magnet and method for manufacturing the same

After a first heat treatment step, an ambient temperature of a stack is held so that the stack is kept in a temperature range that allows the stack to be crystallized by heating the end of the stack to a second temperature range in the second heat treatment step; and a following expression (1) is satisfied, where Q1 represents an amount of heat required to heat the stack to the first temperature range in the first heat treatment step, Q2 represents an amount of heat that is applied to the stack when heating the end of the stack to the second temperature range in the second heat treatment step, Q3 represents an amount of heat that is released during crystallization of the stack, and Q4 represents an amount of heat required to heat the entire stack to the crystallization start temperature1+2+3>4  (1).

Method for crystallization heat treating a stack of amorphous alloy ribbons

In an axial gap motor, a rotor includes a plurality of rotor cores fixed in a circumferential direction of a rotor base, and a stator includes a plurality of stator cores fixed in a circumferential direction of a stator base, and coils wound around the stator cores. End faces of each of the rotor cores and end faces of the corresponding stator core are opposed to each other while being exposed to each other.

Axial gap motor with curved rotor and stator cores

A rotor manufacturing method is a method that allows magnetized magnets inserted in second magnet holes of a second rotor core to be inserted, while retaining magnetism, into first magnet holes of a first rotor core. This method includes a placing step of placing the second rotor core on a first end surface, in a stack thickness direction, of the first rotor core such that the second magnet holes overlap the first magnet holes, and an extruding step of extruding the magnetized magnets from the second magnet holes toward the first magnet holes using a non-magnetic jig.

Rotor manufacturing method

An axial gap motor is configured such that: a rotor includes a plurality of rotor cores fixed along the circumferential direction of a rotor pedestal, and a plurality of magnets; and a stator includes a plurality of stator cores fixed along the circumferential direction of a stator pedestal, and coils wound around the stator cores. A first divided surface of each rotor core faces an N-pole of a corresponding magnet, and a second divided surface of the each rotor core faces an S-pole of a corresponding magnet. Respective divided surfaces of the rotor cores are placed to face respective divided surfaces of the stator cores across the magnets.

Axial gap motor

Provided is an IPM motor that is strong and has high output. An IPM motor has a rotor that includes a rotor core as a laminate of a plurality of metal foil pieces made of a soft magnetic material that are stacked in a direction of a rotation axis of the rotor. The rotor core has a plurality of through-holes that penetrates through the rotor core in the direction of the rotation axis, the plurality of through-holes including through-holes embedding magnets. The rotor core includes inner bridges and outer bridges. At least one of the inner bridges and the outer bridges of the rotor core is made of an amorphous soft magnetic material, and other parts are made of a nanocrystal soft magnetic material.

Interior permanent-magnet motor and method for manufacturing the same

Provided is a laminate having a reduced loss ratio while maintaining a high space factor. The present disclosure relates to a laminate for use in a core, comprising: a strip laminate composed of soft magnetic metal strips; and an insulating layer provided on a surface of the strip laminate, wherein each one layer of the soft magnetic metal strips has a thickness of 100 &#x3bc;m or less, each one layer of the soft magnetic metal strips has an oxide film on their surfaces, the strip laminate is composed of at least two layers of the soft magnetic metal strip, and the strip laminate and the insulating layer are alternately disposed.

Laminate for use in core

The present disclosure provides a method for producing a magnetic component that enables efficient processing of an amorphous soft magnetic material or a nanocrystalline soft magnetic material. The method for producing a magnetic component comprising an amorphous soft magnetic material or nanocrystalline soft magnetic material comprises: a step of preparing a stacked body comprising a plurality of plate-shaped amorphous soft magnetic materials or nanocrystalline soft magnetic materials; a step of heating at least a portion of shearing in the stacked body to a temperature equal to or higher than the crystallization temperature of the soft magnetic materials; and a step of shearing the stacked body at the portion of shearing after the step of heating.

Method for producing magnetic component using amorphous or nanocrystalline soft magnetic material

Provided is a stator for rotating electrical machine that can avoid the sagging of teeth stacked at the distal ends under the self-weight. A stator core is a laminate of metal foil members stacked in a direction of a rotation axis of the rotating electrical machine. Each tooth has a pair of side walls facing the neighboring teeth in the circumferential direction. The stator includes a pair of insulating reinforcing members so as to become a bridge between the corresponding tooth and a part of the yoke and sandwich the corresponding tooth from both sides in the direction of the rotation axis while exposing the pair of side walls; insulating fixing members, each fixing member fixing the corresponding pair of reinforcing members to the corresponding tooth while wrapping around the pair of reinforcing members and tooth; and coils formed as distributed windings at the teeth fixed with the fixing members.

Stator for rotating electrical machine having components for reinforcing laminations

Growing community of inventors

Toyota, Japan

Kensuke Komori