Patents by Inventor Kiyotaka Koga

Kiyotaka Koga 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: 10892656
    Abstract: A stator, wherein the coil unit includes a coil end portion projecting from an axial end face of the stator core; the coil end portion includes a plurality of peak portions projecting axially outward and arranged in a circumferential direction, and a plurality of lead wire portions for supplying electric power to the coils; and each of the lead wire portions includes an extension portion extending at least in an axial direction, and a bent portion that is bent at least from the axial direction to a radial direction, at least a part of the bent portion being disposed on a stator core side with respect to the peak portions in the axial direction, in a space between the peak portions that are closest to the extension portion in the radial direction and that are adjacent in the circumferential direction.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: January 12, 2021
    Assignee: AISIN AW CO., LTD.
    Inventors: Shingo Hashimoto, Shingo Sato, Kiyotaka Koga
  • Patent number: 10886804
    Abstract: A rotating electrical machine that includes a rotor core; a stator core disposed so as to face the rotor core in a radial direction and including a plurality of teeth and a plurality of slots each located between adjacent ones of the teeth; and a concentric coil formed by concentrically winding a wire, and including a slot accommodated portion placed in the slot of the stator core and a coil end portion projecting in an axial direction from the stator core, wherein of the slot accommodated portion of the concentric coil, an axial end of the slot accommodated portion located on a side facing the rotor core is located closer to an outside in the radial direction than an axial middle part of the slot accommodated portion located on the side facing the rotor core.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: January 5, 2021
    Assignee: AISIN AW CO., LTD.
    Inventors: Kiyotaka Koga, Shingo Hashimoto, Shingo Sato
  • Publication number: 20200366146
    Abstract: A method of manufacturing a rotary electric machine armature that includes a cylindrical armature core in which a plurality of slots that extend in an axial direction are disposed in a circumferential direction and a coil wound around the armature core, the slots having respective radial openings that open in a radial direction, and the coil being formed by joining a plurality of segment conductors to each other.
    Type: Application
    Filed: September 20, 2018
    Publication date: November 19, 2020
    Applicant: AISIN AW CO., LTD.
    Inventors: Kiyotaka KOGA, Tomotsugu SUGIHARA
  • Publication number: 20200343794
    Abstract: A method of manufacturing an armature includes: a step of preparing first segment conductors in which a plurality of end portions, or an end portion and a power terminal member, are electrically connected to each other; a step of disposing leg portions of the first segment conductors and leg portions of second segment conductors in an armature core; and a step of joining the leg portions of the first segment conductors and the leg portions of the second segment conductors to each other.
    Type: Application
    Filed: November 29, 2018
    Publication date: October 29, 2020
    Applicant: AISIN AW CO., LTD.
    Inventors: Kiyotaka KOGA, Tomotsugu SUGIHARA
  • Publication number: 20200328644
    Abstract: In a stator, at least a part of a first facing surface in which at least a part of a first leg portion directs to one side in the radial direction and at least a part of a second facing surface in which at least a part of a second leg portion directs to the other side in the radial direction are joined to each other, and a first other end surface of the first leg portion is disposed so as to project toward the other side in the radial direction with respect to a second other end surface which is continuous with the second facing surface.
    Type: Application
    Filed: November 30, 2018
    Publication date: October 15, 2020
    Applicant: AISIN AW CO., LTD.
    Inventors: Kiyotaka KOGA, Tomotsugu SUGIHARA
  • Publication number: 20200280231
    Abstract: In this stator, a first coil portion, a second coil portion, a third coil portion, and a fourth coil portion each include a one-side coil part that is disposed so as to extend over a first slot and a third slot, and an other-side coil part that is disposed so as to extend over a second slot and a fourth slot.
    Type: Application
    Filed: November 29, 2018
    Publication date: September 3, 2020
    Applicant: AISIN AW CO., LTD.
    Inventor: Kiyotaka KOGA
  • Patent number: 10763718
    Abstract: In this stator core, the interval in the circumferential direction of the stator core between an outer peripheral surface of an axial end of a slot accommodated portion of a concentric coil and a tooth facing the outer peripheral surface is larger than the interval in the circumferential direction of the stator core between an inner peripheral surface of the axial end and a tooth facing the inner peripheral surface.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: September 1, 2020
    Assignee: SISIN AW CO., LTD.
    Inventors: Kiyotaka Koga, Shingo Hashimoto, Shingo Sato
  • Publication number: 20200259381
    Abstract: A method of manufacturing a rotary electric machine armature that includes a cylindrical armature core in which a plurality of slots that extend in an axial direction are disposed in a circumferential direction and a coil wound around the armature core, the slots having respective radial openings that open in a radial direction, and the coil being formed by joining a plurality of segment conductors to each other.
    Type: Application
    Filed: September 20, 2018
    Publication date: August 13, 2020
    Applicant: AISIN AW CO., LTD.
    Inventors: Kiyotaka KOGA, Tomotsugu SUGIHARA
  • Publication number: 20200235647
    Abstract: A method of manufacturing a rotary electric machine armature that includes a cylindrical armature core in which a plurality of slots that extend in an axial direction are disposed in a circumferential direction and a coil wound around the armature core, the slots having respective radial openings that open in a radial direction, and the coil being formed by joining a plurality of segment conductors to each other.
    Type: Application
    Filed: September 20, 2018
    Publication date: July 23, 2020
    Applicant: AISIN AW CO., LTD.
    Inventors: Kiyotaka KOGA, Tomotsugu SUGIHARA
  • Patent number: 10666104
    Abstract: A rotating electrical machine where the concentric coil includes a first concentric coil, a second concentric coil, a third concentric coil, and a fourth concentric coil which are of the same phase and are connected in parallel with each other, and each of the first concentric coil, the second concentric coil, the third concentric coil, and the fourth concentric coil has a one-side concentric coil whose coil center is located on one side in a circumferential direction with respect to a center of a magnetic pole, and an other-side concentric coil whose coil center is located on the other side in the circumferential direction with respect to a center of a magnetic pole.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: May 26, 2020
    Assignee: AISIN AW CO., LTD.
    Inventor: Kiyotaka Koga
  • Patent number: 10651700
    Abstract: In this rotating electrical machine, each of coil centers of a first concentric coil and a third concentric coil is located on one side in a circumferential direction with respect to a center of a magnetic pole, and each of coil centers of a second concentric coil and a fourth concentric coil is located on the other side in the circumferential direction with respect to the center of the magnetic pole.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: May 12, 2020
    Assignee: AISIN AW & CO., LTD.
    Inventor: Kiyotaka Koga
  • Patent number: 10622861
    Abstract: A stator that includes a stator core including a plurality of teeth with a slot in between; a plurality of coils each formed of a conductor, each of the coils including: an accommodated portion accommodated in the corresponding slot, a coil end disposed on an outer side of an end face of the stator core, and a lead wire protruding from the accommodated portion and extending radially outward of the stator core; and a connector connected to ends of the lead wires of the coils.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: April 14, 2020
    Assignee: AISIN AW CO., LTD.
    Inventors: Shingo Hashimoto, Shingo Sato, Kiyotaka Koga
  • Patent number: 10594182
    Abstract: A stator manufacturing method that includes a lead wire bending process of inserting a plurality of concentrically wound coils into slots, each of the concentrically wound coils being formed by winding a flat conductive wire for a plurality of turns, each of the slots being formed between every two adjacent teeth extending radially inward from an annular back yoke of a stator core, and bending lead wire portions of the inserted concentrically wound coils projecting in an axial direction from an end surface of the stator core, and a second bending process of bending the lead wire portions using the connection parts as fulcrums so that the lead wire portions approach the end surface of the stator core along the circumferential direction of the stator core after the first bending process.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: March 17, 2020
    Assignee: AISIN AW CO., LTD.
    Inventors: Shingo Hashimoto, Shingo Sato, Masaki Saito, Kiyotaka Koga
  • Patent number: 10594183
    Abstract: A stator assembling method where each of the plurality of the concentrically wound coils has vertexes oriented outward in a axial direction in the planned coil end portions, and a distance in the axial direction between the vertexes of the planned coil end portions on both sides in the axial direction of each of the plurality of concentrically wound coils is gradually reduced toward the conductive wire mounted on the inner diameter side of the stator core from the conductive wire mounted on the outer diameter side of the stator core.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: March 17, 2020
    Assignee: AISIN AW CO., LTD.
    Inventors: Shingo Hashimoto, Shingo Sato, Kazuya Iwatsuki, Kiyotaka Koga, Koji Hirabaru
  • Patent number: 10587157
    Abstract: A stator for a rotating electrical machine, the stator including a tubular core having a plurality of slots; and a coil mounted in the core, wherein the coil includes a plurality of conductor wires aligned in the slots, each of the conductor wires has ends projecting beyond the slot, a pair of the ends are bonded together to form a bonded end, a plurality of the bonded ends are arranged next to each other in a circumferential direction of the core and are arranged in a radial pattern so as to extend in a radial direction of the core, and a cap is formed by molding using a resin material having electrical insulation properties so that the cap integrally covers adjacent ones of the plurality of bonded ends.
    Type: Grant
    Filed: May 30, 2016
    Date of Patent: March 10, 2020
    Assignee: AISIN AW CO., LTD.
    Inventors: Yoichi Miyoshi, Junichi Yokota, Kiyotaka Koga, Junichi Sugawara, Hideaki Kimura
  • Patent number: 10566867
    Abstract: A stator that includes a core formed by stacking annular steel sheets on each other and having teeth and slots provided between the teeth; and a plurality of continuous coils each continuously formed from a single conductor wire and each having a plurality of slot housed portions to be housed in the slots which are different from each other, a coil end portion on one side in an axial direction that connects the slot housed portions to each other, and a coil end portion on the other side in the axial direction that connects the slot housed portions to each other.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: February 18, 2020
    Assignee: AISIN AW CO., LTD.
    Inventors: Kiyotaka Koga, Shingo Hashimoto, Shingo Sato
  • Publication number: 20200006994
    Abstract: A stator that includes a stator core having a plurality of slots; a first coil that is disposed in a first slot of the plurality of slots; and a second coil that is disposed in a second slot of the plurality of slots that is different from the first slot in which the first coil is disposed.
    Type: Application
    Filed: March 16, 2018
    Publication date: January 2, 2020
    Applicant: AISIN AW CO., LTD.
    Inventor: Kiyotaka KOGA
  • Patent number: 10476337
    Abstract: A stator that includes an annular stator core having a plurality of slots and a plurality of coils attached to the stator core, the plurality of coils each including a main body that is inserted in the plurality of slots and includes two slot housed portions and coil end portions including oblique portions extending obliquely with respect to the axial direction, a radially first side end portion formed from one of the slot housed portions, and a radially second side end portion formed from the other one of the slot housed portions.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: November 12, 2019
    Assignee: AISIN AW CO., LTD.
    Inventors: Kiyotaka Koga, Shingo Hashimoto, Shingo Sato
  • Patent number: 10305355
    Abstract: A stator manufacturing method in which a coil including a plurality of coil units formed by winding a rectangular wire is fitted in a cylindrical core having a plurality of slots extending in a radial direction and opening in a core inner peripheral surface so that the slots are distributed in a circumferential direction, the rectangular wire being a linear conductor having a rectangular section.
    Type: Grant
    Filed: December 24, 2015
    Date of Patent: May 28, 2019
    Assignee: AISIN AW CO., LTD.
    Inventors: Kiyotaka Koga, Shingo Hashimoto, Shingo Sato, Hisanori Shirai
  • Publication number: 20180269741
    Abstract: A rotating electrical machine where the concentric coil includes a first concentric coil, a second concentric coil, a third concentric coil, and a fourth concentric coil which are of the same phase and are connected in parallel with each other, and each of the first concentric coil, the second concentric coil, the third concentric coil, and the fourth concentric coil has a one-side concentric coil whose coil center is located on one side in a circumferential direction with respect to a center of a magnetic pole, and an other-side concentric coil whose coil center is located on the other side in the circumferential direction with respect to a center of a magnetic pole.
    Type: Application
    Filed: March 24, 2016
    Publication date: September 20, 2018
    Applicant: AISIN AW CO., LTD.
    Inventor: Kiyotaka KOGA