Patents by Inventor Ryuichi KITORA

Ryuichi KITORA 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: 20200094486
    Abstract: The present invention is provided with: an insulation holder formed of a thermoplastic resin material and having a first opening; a wire connection ring formed of a thermoplastic resin material and having a second opening; and a joining component inserted astride in the first opening and the second opening, the joining component being formed of a metal material having a higher melting point than those of the thermoplastic resin materials, the joining component having a higher stiffness than those of the insulation holder and the wire connection ring, wherein a welded part is formed by welding in at least a part of an area where each of the insulation holder and the wire connection ring has contact with the joining component.
    Type: Application
    Filed: November 27, 2019
    Publication date: March 26, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yoshiki KUWAHARA, Ryuichi KITORA, Akihiro YAMAMURA, Shogo OKAMOTO, Masashi NAKAMURA, Shinichiro YOSHIDA
  • Patent number: 10576690
    Abstract: The present invention is provided with: an insulation holder formed of a thermoplastic resin material and having a first opening; a wire connection ring formed of a thermoplastic resin material and having a second opening; and a joining component inserted astride in the first opening and the second opening, the joining component being formed of a metal material having a higher melting point than those of the thermoplastic resin materials, the joining component having a higher stiffness than those of the insulation holder and the wire connection ring, wherein a welded part is formed by welding in at least a part of an area where each of the insulation holder and the wire connection ring has contact with the joining component.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: March 3, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshiki Kuwahara, Ryuichi Kitora, Akihiro Yamamura, Shogo Okamoto, Masashi Nakamura, Shinichiro Yoshida
  • Patent number: 10396614
    Abstract: A stator of a rotating electrical machine includes: a plurality of annularly arranged stator cores; a stator winding attached to slots of the stator cores; and a shell (22) that retains the stator cores. In the stator of the rotating electrical machine, the ends of coil terminal wires (19), (20) on the innermost circumferential side and the outermost circumferential side of each slot are oriented in the axial direction of the stator; and side surfaces of the ends of the terminal wires (19), (20) are brought into contact with each other and are welded above the coil end (21) of the stator winding.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: August 27, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Ryuichi Kitora, Masashi Nakamura, Masaya Inoue, Shogo Okamoto, Atsushi Sakaue, Tatsuro Hino
  • Publication number: 20190140509
    Abstract: In a rotary electric machine, each of coils includes coil terminals led out from a coil main body. The coil terminals are connected to bus bars. When a diameter of each of the bus bars is defined as D, a diameter of a cross section of a coil wire is defined as “d”, a Young's modulus of the coil wire is defined as E, a linear expansion coefficient of a material of the bus bars is defined as ?1, a linear expansion coefficient of a material of a stator core is defined as ?2, and an estimated temperature difference between a room temperature and a use environment temperature is defined as ?T, a length L of at least one of the coil terminals from an end on the coil main body side to a connecting portion to the bus bar satisfies the following expression: L?((3?dED(?1??2)?T/10)1/2/10.
    Type: Application
    Filed: June 8, 2016
    Publication date: May 9, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Ryuichi KITORA, Masaya INOUE, Ryuji KITAMURA, Kota KATSURAGI
  • Publication number: 20190036387
    Abstract: In a rotary electric machine, slots are formed between teeth of a stator core. A ratio of a number of poles to a number of slots is 2:3. When an electrical angle of a tooth tip width, which is a width dimension of a tip of each of the teeth in a circumferential direction of the stator, is represented by ?, an electrical angle of a pole arc angle, which is an angle formed by two straight lines that connect a rotation center of a rotor to corners on a rotor surface side of one permanent magnet, is represented by ?, and a number of pole pairs is represented by P, the tooth tip width is within a range of (electrical angle)±0.2°×P for a value that satisfies the following expression: ?=?2.5?+319.7 (0<??180) [deg].
    Type: Application
    Filed: November 29, 2016
    Publication date: January 31, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Moriyuki HAZEYAMA, Junji KITAO, Yoshihiro MIYAMA, Shogo OKAMOTO, Shinji NISHIMURA, Ryuichi KITORA, Ryuji KITAMURA, Hitoshi ISODA
  • Patent number: 10193405
    Abstract: In the rotary electric machine, bus-bar lead terminals of bus bars, which are held by a connection component, are formed in such a way that the bus-bar lead terminals are protruded from the bus bars to an axis direction of a stator, and a plurality of bus-bar storage grooves are formed by using a plurality of partitions which are concentrically arranged in a diameter direction of the stator via gaps, and in the plurality of partitions, lengths, in the axis direction, of the most outer circumference partition, which is positioned at the most outer circumference side in the diameter direction, and the most inner circumference partition, which is positioned at the most inner circumference side in the diameter direction, are longer than lengths, in the axis direction, of a plurality of middle partitions, which are positioned between the most outer circumference partition and the most inner circumference partition.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: January 29, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Naoki Ohashi, Ryuichi Kitora
  • Patent number: 10193420
    Abstract: Provided is a rotating electric machine capable of improving heat dissipation from each of busbars to achieve a higher output. The rotating electric machine includes: a stator core (8); a frame (3); coil portions; a plurality of busbars (18, 19, 20) arranged on one end surface side of the stator core (8), which are to be electrically connected to the coil portions to distribute electric power to the coil portions; a holder (17); and a plate (24) having one end portion facing at least one of the plurality of busbars (18, 19, 20) and another end portion exposed externally from the holder (17) to be held in contact with an outer circumferential surface of a jacket (4). The plate (24) guides heat of the plurality of busbars (18, 19, 20) from the one end portion to the another end portion.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: January 29, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventor: Ryuichi Kitora
  • Patent number: 10110083
    Abstract: A side surface at the outside of a plurality of teeth portions of one separated core is faced to a side surface of teeth portions of an adjacent separated core, so as to form a second slot which is straddled between the adjacent separated cores, and a first slot is formed by a plurality of teeth portions of one separated core, and a width size of the first slot is identical to a width size of the second slot, and coil conductor storage space is formed in the first slot via a first insulating component, and coil conductor storage space is formed in the second slot via a second insulating component, and a thickness size of the first insulating component is different from a thickness size of the second insulating component.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: October 23, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Manabu Yoshinori, Atsushi Sakaue, Tatsuro Hino, Hironori Tsuiki, Shinichi Okada, Hiroki Shiota, Masaya Inoue, Shogo Okamoto, Shinji Nishimura, Akira Hashimoto, Shinkichi Sawa, Yutaka Ikura, Ryuichi Kitora
  • Publication number: 20180115211
    Abstract: The rotary electric machine according to the present invention includes: a ring-shaped electrically insulating holder in which a plurality of groove portions are formed concentrically; a plurality of strip-shaped electrically conductive members that are formed so as to have strip-shaped bodies that have a rectangular cross section, and that are housed in each of the groove portions; and connecting conductors that each include: a circumferentially extending portion that extends circumferentially at the first axial end of the electrically insulating holder so as to be parallel to the strip-shaped electrically conductive member; and a radially extending portion that extends in a radial direction from an end portion at an opposite end of the circumferentially extending portion from the strip-shaped electrically conductive member by means of a bent portion, the radially extending portion at an opposite end from the bent portion being connected to the coil terminal.
    Type: Application
    Filed: March 31, 2015
    Publication date: April 26, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masashi NAKAMURA, Ryuichi KITORA, Akihiro YAMAMURA, Koichi OJIMA, Masaya INOUE
  • Publication number: 20170250585
    Abstract: In the rotary electric machine, bus-bar lead terminals of bus bars, which are held by a connection component, are formed in such a way that the bus-bar lead terminals are protruded from the bus bars to an axis direction of a stator, and a plurality of bus-bar storage grooves are formed by using a plurality of partitions which are concentrically arranged in a diameter direction of the stator via gaps, and in the plurality of partitions, lengths, in the axis direction, of the most outer circumference partition, which is positioned at the most outer circumference side in the diameter direction, and the most inner circumference partition, which is positioned at the most inner circumference side in the diameter direction, are longer than lengths, in the axis direction, of a plurality of middle partitions, which are positioned between the most outer circumference partition and the most inner circumference partition.
    Type: Application
    Filed: June 23, 2016
    Publication date: August 31, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Naoki OHASHI, Ryuichi KITORA
  • Publication number: 20170217083
    Abstract: The present invention is provided with: an insulation holder formed of a thermoplastic resin material and having a first opening; a wire connection ring formed of a thermoplastic resin material and having a second opening; and a joining component inserted astride in the first opening and the second opening, the joining component being formed of a metal material having a higher melting point than those of the thermoplastic resin materials, the joining component having a higher stiffness than those of the insulation holder and the wire connection ring, wherein a welded part is formed by welding in at least a part of an area where each of the Insulation holder and the wire connection ring has contact with the joining component.
    Type: Application
    Filed: October 22, 2015
    Publication date: August 3, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yoshiki KUWAHARA, Ryuichi KITORA, Akihiro YAMAMURA, Shogo OKAMOTO, Masashi NAKAMURA, Shinichiro YOSHIDA
  • Publication number: 20160308406
    Abstract: Provided is a rotating electric machine capable of improving heat dissipation from each of busbars to achieve a higher output. The rotating electric machine includes: a stator core (8); a frame (3); coil portions; a plurality of busbars (18, 19, 20) arranged on one end surface side of the stator core (8), which are to be electrically connected to the coil portions to distribute electric power to the coil portions; a holder (17); and a plate (24) having one end portion facing at least one of the plurality of busbars (18, 19, 20) and another end portion exposed externally from the holder (17) to be held in contact with an outer circumferential surface of a jacket (4). The plate (24) guides heat of the plurality of busbars (18, 19, 20) from the one end portion to the another end portion.
    Type: Application
    Filed: September 11, 2015
    Publication date: October 20, 2016
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Ryuichi KITORA
  • Publication number: 20160172921
    Abstract: A side surface at the outside of a plurality of teeth portions of one separated core is faced to a side surface of teeth portions of an adjacent separated core, so as to form a second slot which is straddled between the adjacent separated cores, and a first slot is formed by a plurality of teeth portions of one separated core, and a width size of the first slot is identical to a width size of the second slot, and coil conductor storage space is formed in the first slot via a first insulating component, and coil conductor storage space is formed in the second slot via a second insulating component, and a thickness size of the first insulating component is different from a thickness size of the second insulating component.
    Type: Application
    Filed: November 8, 2013
    Publication date: June 16, 2016
    Applicant: Mitsubishi Electric Corporation
    Inventors: Manabu YOSHINORI, Atsushi SAKAUE, Tatsuro HINO, Hironori TSUIKI, Shinichi OKADA, Hiroki SHIOTA, Masaya INOUE, Shogo OKAMOTO, Shinji NISHIMURA, Akira HASHIMOTO, Shinkichi SAWA, Yutaka IKURA, Ryuichi KITORA
  • Publication number: 20160149456
    Abstract: A stator of a rotating electrical machine includes: a plurality of annularly arranged stator cores; a stator winding attached to slots of the stator cores; and a shell (22) that retains the stator cores. In the stator of the rotating electrical machine, the ends of coil terminal wires (19), (20) on the innermost circumferential side and the outermost circumferential side of each slot are oriented in the axial direction of the stator; and side surfaces of the ends of the terminal wires (19), (20) are brought into contact with each other and are welded above the coil end (21) of the stator winding.
    Type: Application
    Filed: September 18, 2013
    Publication date: May 26, 2016
    Applicant: Mitsubishi Electric Corporation
    Inventors: Ryuichi KITORA, Masashi NAKAMURA, Masaya NOUE, Shogo OKAMOTO, Atsushi SAKAUE, Tatsuro HINO