Patents by Inventor Ami IIJIMA

Ami IIJIMA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20260196890
    Abstract: A rotor for a rotating electric machine, including: a rotor core; a first-layer permanent magnet disposed in a first-layer magnet hole; and a second-layer permanent magnet disposed in a second-layer magnet hole. When a magnet angle formed by a reference line extending vertical to a d-axis from an intersection between the d-axis and an extending direction of a side surface of the magnet piece in a main magnetic flux direction viewed in an axial and extending direction of the side surface, and a radially inner side of the reference line in the axial direction is defined as positive side of the magnet angle, a first magnet angle of a first magnet piece forms the first-layer permanent magnet and is on or closest the d-axis is smaller than a second magnet angle of a second magnet piece forming the second-layer permanent magnet and is on or closest to the d-axis.
    Type: Application
    Filed: December 8, 2023
    Publication date: July 9, 2026
    Applicant: AISIN CORPORATION
    Inventors: Yoichiro KIMURA, Shigeki IDEUE, Ami IIJIMA, Yushi KIDO, Teppei TSUDA
  • Patent number: 12519353
    Abstract: A laminated core of this rotor core includes one side magnet hole provided on one side in a circumferential direction with respect to a d-axis, an other side magnet hole provided on the other side, an intermediate magnet hole, a first outer bridge portion, a second outer bridge portion, a first inner bridge portion, and a second inner bridge portion.
    Type: Grant
    Filed: December 21, 2021
    Date of Patent: January 6, 2026
    Assignees: AISIN CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoto Saito, Ami Iijima, Teppei Tsuda, Toshinori Okochi
  • Patent number: 12283848
    Abstract: The rotor includes: rotor core provided with first magnet hole on an outer side in radial direction and second magnet hole on inner side wherein radial direction for each of the magnetic poles; and plurality of permanent magnets provided in first and second magnet holes and forming magnetic poles. Rotor core includes first section provided radially outside of first magnet hole, second section extending between first and second magnet holes and having opposite ends in circumferential direction that extend to outer peripheral surface of rotor core, third section extending radially inside of second magnet hole and having opposite ends in circumferential direction that extend to outer peripheral surface of rotor core, a first bridge portion that connects second and first sections form part of outer peripheral surface of rotor core, and second bridge portion that connects third and second sections and forms part of outer peripheral surface of rotor core.
    Type: Grant
    Filed: January 14, 2021
    Date of Patent: April 22, 2025
    Assignee: AISIN CORPORATION
    Inventors: Naoto Saito, Ami Iijima, Teppei Tsuda
  • Publication number: 20250070605
    Abstract: A rotor for a rotating electrical machine is disclosed that includes: a rotor core having a radially outer first magnet hole and a radially inner second magnet hole; a first permanent magnet in the first magnet hole; and a second permanent magnet in the second magnet hole. The rotor core includes a first portion located radially outward of the first magnet hole, a second portion located between the first magnet hole and the second magnet hole, a third portion located radially inward of the second magnet hole, and bridge portions connecting the third portion and the second portion. A separation distance of the second permanent magnet from the first permanent magnet is smaller at a position closer to the bridge portion in a circumferential direction than at a position farther from the bridge portion in the circumferential direction along a side of the second permanent magnet that faces the first permanent magnet, as viewed in an axial direction.
    Type: Application
    Filed: March 28, 2023
    Publication date: February 27, 2025
    Applicant: AISIN CORPORATION
    Inventors: Ami IIJIMA, Shigeki IDEUE, Yushi KIDO, Teppei TSUDA
  • Publication number: 20230412018
    Abstract: A laminated core of this rotor core includes one side magnet hole provided on one side in a circumferential direction with respect to a d-axis, an other side magnet hole provided on the other side, an intermediate magnet hole, a first outer bridge portion, a second outer bridge portion, a first inner bridge portion, and a second inner bridge portion.
    Type: Application
    Filed: December 21, 2021
    Publication date: December 21, 2023
    Applicants: AISIN CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoto SAITO, Ami IIJIMA, Teppei TSUDA, Toshinori OKOCHI
  • Publication number: 20230198324
    Abstract: The rotor includes: rotor core provided with first magnet hole on an outer side in radial direction and second magnet hole on inner side wherein radial direction for each of the magnetic poles; and plurality of permanent magnets provided in first and second magnet holes and forming magnetic poles. Rotor core includes first section provided radially outside of first magnet hole, second section extending between first and second magnet holes and having opposite ends in circumferential direction that extend to outer peripheral surface of rotor core, third section extending radially inside of second magnet hole and having opposite ends in circumferential direction that extend to outer peripheral surface of rotor core, a first bridge portion that connects second and first sections form part of outer peripheral surface of rotor core, and second bridge portion that connects third and second sections and forms part of outer peripheral surface of rotor core.
    Type: Application
    Filed: January 14, 2021
    Publication date: June 22, 2023
    Applicant: AISIN CORPORATION
    Inventors: Naoto SAITO, Ami IIJIMA, Teppei TSUDA