公开(公告)号：US20200066430A1

公开(公告)日：2020-02-27

申请号：US16672865

申请日：2019-11-04

Applicant: DENSO CORPORATION

Inventor： Hiroaki KURA ,  Eiji WATANABE ,  Masane KIN ,  Kenta OSANAI

IPC: H01F1/055 ,  B22F1/00

Abstract: An L10-FeNi magnetic powder has an average particle size of 50 nm to 1 μm, and an average value of sphericity P of 0.9 or more. The sphericity P is defined as P=Ls/Lr, where Lr is a perimeter of an L10-FeNi magnetic powder particle on an image of a microscope, and Ls is a perimeter of a perfect circle that has a same area as the L10-FeNi magnetic powder particle on the image for which Lr is calculated.

公开(公告)号：US20230421036A1

公开(公告)日：2023-12-28

申请号：US18368072

申请日：2023-09-14

Applicant: DENSO CORPORATION

Inventor： Itsuki FUNABA ,  Taichi SUGIURA ,  Shin SAKAI ,  Mitsuo HARA ,  Akitomo SASAKI ,  Kenta OSANAI ,  Kenichiro BAN

IPC: H02K41/03

CPC classification number: H02K41/031

Abstract: Disclosed is a linear motor which includes a stator and a mover. The stator extends along a first axis. The mover is arranged so as to extend along the first axis and radially face the stator. The mover has a pole interval along the first axis different from that of the stator. At least one of the stator and the mover has a plurality of permanent magnets arranged in alignment with each other along the first axis, and a plurality of yoke parts arranged in alignment with each other along the first axis. The permanent magnets are provided, for each pole, in a continuous range along the first axis. The permanent magnets are polar anisotropic magnets that are magnetized from both end portions along the first axis to a radial end portion at a center along the first axis, or magnetized in the reverse directions to these.