Patents by Inventor Yu Yoda

Yu Yoda 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).

  • Patent number: 12074486
    Abstract: A rotor includes a rotor core configured by laminated steel plates and a magnet insertion hole extending along an axial direction of the rotor core, with a resin interposed between a permanent magnet placed in the magnet insertion hole and an inner wall face of the magnet insertion hole. In a manufacturing method for this rotor, in a first process, the permanent magnet and the resin are integrated together to manufacture a resin-coated permanent magnet. Next, in a second process, the resin-coated permanent magnet is press-fitted into the magnet insertion hole. Next, in a third process, the post-second-process rotor core is heated to a temperature that is at least the temperature at which the resin softens. Next, in a fourth process, the post-third process rotor core is cooled.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: August 27, 2024
    Assignee: NHK SPRING CO., LTD.
    Inventors: Yohei Kameda, Yu Yoda
  • Patent number: 11549535
    Abstract: A joined body includes: a thin plate including through holes; a first member including a proximal portion having a portion contacting the thin plate, and a protruding portion that protrudes in relation to a contact surface of the proximal portion and is inserted through the through hole; and a second member arranged oppositely to the proximal portion via the thin plate and made of a material that is same as that of the first member. The thin plate is made of a material having a specific gravity smaller than that of the material forming the first and the second members. The second member and an end portion of the protruding portion are connected to each other, by a part of the second member and a part of the end portion being melt-solidified, the end portion being at a side opposite to a side connected to the proximal portion.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: January 10, 2023
    Assignee: NHK Spring Co., LTD.
    Inventors: Yuichiro Yamauchi, Ayane Sato, Katsuji Goto, Masakazu Ando, Takuya Sato, Yu Yoda, Shimpei Kurokawa, Masatake Kinoshita
  • Patent number: 11498466
    Abstract: A joined body includes: a thin plate including through holes; first members each including: a base portion and a protruding portion inserted into one of the through holes; and a second member placed oppositely to the base portion via the thin plate and made of a material that is of a same kind as a material of the first members. The thin plate is made of a material having a specific gravity smaller than the materials of the first and the second members. The second member and an end portion of the protruding portion are connected together by melt-solidification. A post-joining hardness difference in a range of 30% along a direction orthogonal to a joint interface between the second member and the protruding portion, the range being centered on the joint interface, is equal to or less than 90% of a pre-joining hardness difference.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: November 15, 2022
    Assignee: NHK Spring Co., Ltd.
    Inventors: Yuichiro Yamauchi, Yu Yoda, Takuya Sato, Katsuji Goto, Masakazu Ando, Ayane Sato
  • Publication number: 20220103029
    Abstract: A rotor includes a rotor core configured by laminated steel plates and a magnet insertion hole extending along an axial direction of the rotor core, with a resin interposed between a permanent magnet placed in the magnet insertion hole and an inner wall face of the magnet insertion hole. In a manufacturing method for this rotor, in a first process, the permanent magnet and the resin are integrated together to manufacture a resin-coated permanent magnet that is capable of being press-fitted into the magnet insertion hole. Next, in a second process, the resin-coated permanent magnet is press-fitted into the magnet insertion hole. Next, in a third process, the post-second-process rotor core is heated to a temperature that is at least the temperature at which the resin softens.
    Type: Application
    Filed: January 14, 2020
    Publication date: March 31, 2022
    Inventors: Yohei KAMEDA, Yu YODA
  • Publication number: 20200317100
    Abstract: A joined body includes: a thin plate including through holes; first members each including: a base portion and a protruding portion inserted into one of the through holes; and a second member placed oppositely to the base portion via the thin plate and made of a material that is of a same kind as a material of the first members. The thin plate is made of a material having a specific gravity smaller than the materials of the first and the second members. The second member and an end portion of the protruding portion are connected together by melt-solidification. A post-joining hardness difference in a range of 30% along a direction orthogonal to a joint interface between the second member and the protruding portion, the range being centered on the joint interface, is equal to or less than 90% of a pre-joining hardness difference.
    Type: Application
    Filed: November 15, 2018
    Publication date: October 8, 2020
    Inventors: Yuichiro Yamauchi, Yu Yoda, Takuya Sato, Katsuji Goto, Masakazu Ando, Ayane Sato
  • Publication number: 20200124069
    Abstract: A joined body includes: a thin plate including through holes; a first member including a proximal portion having a portion contacting the thin plate, and a protruding portion that protrudes in relation to a contact surface of the proximal portion and is inserted through the through hole; and a second member arranged oppositely to the proximal portion via the thin plate and made of a material that is same as that of the first member. The thin plate is made of a material having a specific gravity smaller than that of the material forming the first and the second members. The second member and an end portion of the protruding portion are connected to each other, by a part of the second member and a part of the end portion being melt-solidified, the end portion being at a side opposite to a side connected to the proximal portion.
    Type: Application
    Filed: April 3, 2018
    Publication date: April 23, 2020
    Inventors: Yuichiro Yamauchi, Ayane Sato, Katsuji Goto, Masakazu Ando, Takuya Sato, Yu Yoda, Shimpei Kurokawa, Masatake Kinoshita