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).

  • Publication number: 20210391763
    Abstract: In the armature, a first connecting part and a second connecting part that are disposed so as to be adjacent to a connecting part of a different phase have a higher insulatable voltage value than a first leg part and a second leg part that are disposed so as to be adjacent to a leg part of the same phase.
    Type: Application
    Filed: January 30, 2020
    Publication date: December 16, 2021
    Applicant: AISIN CORPORATION
    Inventors: Yoshihisa YAMAMOTO, Kiyotaka KOGA, Takahiro KOBUCHI
  • Publication number: 20210351653
    Abstract: In this armature, between the first segment conductor and the second segment conductor that are joined to each other in the joint portion, a first clearance portion is provided between the tip end portion of the first leg portion and the second leg portion body portion in the axial direction, and a second clearance portion is provided between the tip end portion of the second leg portion and the first leg portion body portion in the axial direction.
    Type: Application
    Filed: October 9, 2019
    Publication date: November 11, 2021
    Applicant: AISIN AW CO., LTD.
    Inventors: Kiyotaka KOGA, Takahiro KOBUCHI, Takashi KATO
  • Publication number: 20210344243
    Abstract: In this stator armature, a first leg portion has a first surface side part that has a thickness in a radial direction smaller than a thickness of a first leg portion body portion in the radial direction, a second leg portion has a second surface side part that has a thickness in the radial direction smaller than a thickness of a second leg portion body portion in the radial direction, and in the radial direction, a thickness of a joint portion is equal to or more than a thickness of a part other than the joint portion.
    Type: Application
    Filed: November 6, 2019
    Publication date: November 4, 2021
    Applicant: AISIN AW CO., LTD.
    Inventors: Kiyotaka KOGA, Takahiro KOBUCHI, Takashi KATO
  • Publication number: 20210273514
    Abstract: This armature has a core leg portion fixing member that is provided in a slot so as to overlap with a part at a position different from a position in an axial direction corresponding to a joint portion, and that includes a first fixing layer for fixing an armature core and a leg portion.
    Type: Application
    Filed: July 5, 2019
    Publication date: September 2, 2021
    Applicant: AISIN AW CO., LTD.
    Inventor: Kiyotaka KOGA
  • Patent number: 11095177
    Abstract: A coil wound around a core in which a plurality of slots that extend in an axial direction are arranged in a circumferential direction, the coil including a plurality of slot-housed portions respectively disposed in the plurality of slots; and a plurality of crossover portions that each connect between a first slot-housed portion and a second slot-housed portion, which are a pair of slot-housed portions of the plurality of slot-housed portions disposed in slots of the plurality of slots that are different from each other, on an outer side in the axial direction with respect to the core.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: August 17, 2021
    Assignee: AISIN AW CO., LTD.
    Inventor: Kiyotaka Koga
  • Publication number: 20210234439
    Abstract: The method for manufacturing an armature includes a step of independently pressing pressing-target segment conductors by a plurality of pressing jigs disposed for each of the pressing-target segment conductors, such that the plurality of pressing jigs are movable relative to each other, at least either one of first segment conductors and second segment conductors serving as the pressing-target segment conductors.
    Type: Application
    Filed: December 14, 2018
    Publication date: July 29, 2021
    Applicant: AISIN AW CO., LTD.
    Inventors: Kiyotaka KOGA, Tomotsugu SUGIHARA
  • Patent number: 11063487
    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: Grant
    Filed: March 16, 2018
    Date of Patent: July 13, 2021
    Assignee: AISIN AW CO., LTD.
    Inventor: Kiyotaka Koga
  • Publication number: 20210194335
    Abstract: A method of manufacturing an armature includes: a step of placing a bonding agent on bonding surfaces of the distal ends of a plurality of segment conductors; a step of placing the plurality of segment conductors on an armature core; a step of bonding the distal ends to each other; and a step of increasing a viscosity of the bonding agent placed on the distal ends, after the step of placing the bonding agent on the distal ends, and before the step of bonding the distal ends to each other.
    Type: Application
    Filed: November 30, 2018
    Publication date: June 24, 2021
    Applicant: AISIN AW CO., LTD.
    Inventors: Kiyotaka KOGA, Tomotsugu SUGIHARA
  • Publication number: 20210194306
    Abstract: A coil wound around a core in which a plurality of slots that extend in an axial direction are arranged in a circumferential direction, the coil including a plurality of slot-housed portions respectively disposed in the plurality of slots; and a plurality of crossover portions that each connect between a first slot-housed portion and a second slot-housed portion, which are a pair of slot-housed portions of the plurality of slot-housed portions disposed in slots of the plurality of slots that are different from each other, on an outer side in the axial direction with respect to the core.
    Type: Application
    Filed: September 20, 2018
    Publication date: June 24, 2021
    Applicant: AISIN AW CO., LTD.
    Inventor: Kiyotaka KOGA
  • Publication number: 20210184528
    Abstract: In an armature, a plurality of segment conductors, which are joined to each other at a joint portion, are disposed in parallel in the radial direction. An insulating portion is provided on a conductor surface of one segment conductor at a position in the center axis direction corresponding to an adjacent joint portion of a different segment conductor that is adjacent to the one segment conductor in the radial direction. The insulating portion has a second insulation resistance which is higher than a first insulation resistance of an insulating coating of the different segment conductor.
    Type: Application
    Filed: November 29, 2018
    Publication date: June 17, 2021
    Applicant: AISIN AW CO., LTD.
    Inventors: Kiyotaka KOGA, Tomotsugu SUGIHARA
  • Publication number: 20210167657
    Abstract: In this armature, a joint portion is insulated by a joint portion insulating member that has a sheet shape and that includes a facing surface insulating part that covers a facing surface of the joint portion and a circumferential surface insulating part that covers a circumferential surface of the joint portion. The facing surface insulating parts adjacent to each other in a radial direction are connected by the circumferential surface insulating part on one side or another side in the circumferential direction.
    Type: Application
    Filed: June 28, 2019
    Publication date: June 3, 2021
    Applicant: AISIN AW CO., LTD.
    Inventors: Kiyotaka KOGA, Takahiro KOBUCHI
  • Publication number: 20210167649
    Abstract: In this armature, facing surfaces which are portions where a first segment conductor and a second segment conductor are joined together are disposed so as to overlap each other as viewed in a radial direction, and an end part of at least one of the first segment conductor and the second segment conductor is provided with chamfered parts at edge parts on both circumferential sides of the end part.
    Type: Application
    Filed: February 7, 2019
    Publication date: June 3, 2021
    Applicant: AISIN AW CO., LTD.
    Inventors: Kiyotaka KOGA, Tomotsugu SUGIHARA, Takahiro KOBUCHI
  • Publication number: 20210135512
    Abstract: A rotary electric machine armature that includes a cylindrical armature core and a coil wound around the armature core, wherein: the coil is formed by joining a plurality of segment conductors to each other; the segment conductors have respective conductor side portions that extend along the axial direction; the conductor side portions are provided with respective joint portions; the joint portions have respective facing surfaces; the joint portions of a pair of the segment conductors are joined to each other with the facing surfaces of the joint portions facing each other; and a facing surface of the facing surfaces is formed so as to have a portion that faces a radial direction and so as not to have portions that overlap each other as viewed in the radial direction over the entire facing surface.
    Type: Application
    Filed: September 20, 2018
    Publication date: May 6, 2021
    Applicant: AISIN AW CO., LTD.
    Inventors: Kiyotaka KOGA, Tomotsugu SUGIHARA
  • Publication number: 20210036569
    Abstract: A rotating electrical machine stator and a method for manufacturing a rotating electrical machine stator with high productivity. A rotating electrical machine stator includes a stator core having a slot; and a coil having a leg part including a held-in-slot part held in the slot and a portion extending from the held-in-slot part, and a resin foam is provided between an inner surface of the slot and an outer surface of the held-in-slot part facing the inner surface of the slot. The coil is formed by joining together a plurality of segment conductors each having a joint part, and a conductive joint material is disposed between a pair of joint parts facing each other in the slot.
    Type: Application
    Filed: March 19, 2019
    Publication date: February 4, 2021
    Applicant: AISIN AW CO., LTD.
    Inventors: Kiyotaka KOGA, Tomotsugu SUGIHARA, Tetsuya FUNAYAMA, Shinya KATAYAMA, Takahiro KOBUCHI
  • 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