Patents by Inventor Yuichi Nishikawa

Yuichi Nishikawa 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: 11677291
    Abstract: A motor includes a motor main body including a rotor and a stator, a housing that houses the motor main body, a controller that is located above the motor main body o controls rotation of the rotor, and a cover that surrounds the controller from a radially outer side. The housing includes a cover joint that is annular and surrounds the controller when viewed in an axial direction. The cover includes a cylindrical portion that surrounds the cover joint from an outside in a radial direction. The cover joint includes a contact portion that contacts a surface of the cylindrical portion in the radial direction and an adhesive joint that is bonded with the cylindrical portion via an adhesive in the radial direction. The contact portion and the adhesive joint are adjacent each other in a circumferential direction.
    Type: Grant
    Filed: April 8, 2022
    Date of Patent: June 13, 2023
    Assignee: NIDEC CORPORATION
    Inventors: Takashi Hattori, Yuichi Nishikawa, Takao Atarashi, Yuki Hamada, Yu Kuwamoto
  • Publication number: 20230132168
    Abstract: A motor includes a rotor that includes a shaft located along a central axis extending in a vertical direction, a stator that includes coils and opposes the rotor in a radial direction, a casing that supports the rotor and the stator, and a terminal attached to the casing and electrically connected to lead wires extending from the coils. The terminal includes a lead wire terminal portion extending in a direction intersecting an axial direction toward the lead wires, and an external terminal portion that is electrically connected to the lead wire terminal portion and extends in the axial direction toward the outside of the casing.
    Type: Application
    Filed: March 9, 2021
    Publication date: April 27, 2023
    Inventors: Takashi HATTORI, Yuichi NISHIKAWA, Yu KUWAMOTO
  • Patent number: 11611260
    Abstract: A motor includes a rotor, a stator including coils defined by windings of coil wires, a coil support into which the coil wires are inserted, a bearing supporting the shaft, a holder with a through-hole that holds both the bearing and the coil support. The coil support includes a base on the top surface of the stator, and a coil support portion extending axially upward from the base, at least a portion of which is located in the through-hole. The base is fitted to the stator through a gap.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: March 21, 2023
    Assignee: NIDEC CORPORATION
    Inventors: Toshiya Okamoto, Takashi Hattori, Yusaku Yoshida, Yoshiaki Yamashita, Takahiro Kizu, Yuichi Nishikawa
  • Patent number: 11522408
    Abstract: A motor includes a rotor, a stator that surrounds the radial outer side of the rotor, a housing that contains the rotor and the stator, a holder axially above the stator, a substrate fixed to the axial upper side of the holder, and a connector radially outward of the housing and electrically connected to the substrate. The holder includes a holder body, and a holder protrusion that connects to the holder body and extends radially outward from the housing. The connector contacts the underside of the holder protrusion.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: December 6, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Takashi Hattori, Takahiro Kizu, Toshiya Okamoto, Yuichi Nishikawa, Yoshiaki Yamashita
  • Publication number: 20220231564
    Abstract: A motor includes a motor main body including a rotor and a stator, a housing that houses the motor main body, a controller that is located above the motor main body o controls rotation of the rotor, and a cover that surrounds the controller from a radially outer side. The housing includes a cover joint that is annular and surrounds the controller when viewed in an axial direction. The cover includes a cylindrical portion that surrounds the cover joint from an outside in a radial direction. The cover joint includes a contact portion that contacts a surface of the cylindrical portion in the radial direction and an adhesive joint that is bonded with the cylindrical portion via an adhesive in the radial direction. The contact portion and the adhesive joint are adjacent each other in a circumferential direction.
    Type: Application
    Filed: April 8, 2022
    Publication date: July 21, 2022
    Inventors: Takashi HATTORI, Yuichi NISHIKAWA, Takao ATARASHI, Yuki HAMADA, Yu KUWAMOTO
  • Patent number: 11355994
    Abstract: A bush attached to a through hole of a casing of a motor holds a conductor. The bush includes a main body, an insertion hole, a flange, and a rib. The main body includes a first end surface, a second end surface facing the first end surface in a first direction, and side surfaces between the first end surface and the second end surface. The insertion hole penetrates an inside of the main body in the first direction, and allows the conductor to pass through. The flange protrudes from a side surface in a direction perpendicular or substantially perpendicular to the first direction. The rib protrudes from the side surface in a direction perpendicular or substantially perpendicular to the first direction.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: June 7, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Takahiro Kizu, Ryosuke Kozu, Yuichi Nishikawa, Takahiro Hisada, Takanobu Oyama
  • Patent number: 11329527
    Abstract: A motor includes a motor main body, a housing, a heat sink, a controller, a connector, and a cover that surrounds the controller and the connector. The heat sink includes a connector holder including an open outer side in a radial direction and holding the connector. The motor includes a ring-shaped cover joint portion that surrounds the controller and includes a stepped portion that includes a first surface and a second surface. The cover includes a cylindrical portion that faces the first surface in the radial direction. The motor includes a waterproof material that seals a portion between the cylindrical portion and the first surface or a portion between the cylindrical portion and the second surface.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: May 10, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Takashi Hattori, Yuichi Nishikawa, Yuki Hamada, Yu Kuwamoto
  • Patent number: 11258334
    Abstract: A motor includes a motor body, a housing, a heat sink, a controller, a connector, and a cover. The heat sink includes two arm portions each extending radially outward. The connector is held between the two arm portions. The heat sink and the connector include a cover joint portion extending all the way around surfaces of the heat sink and the connector along a circumferential direction, is loop-shaped, and surrounds the controller, when viewed in an axial direction. The cover is joined to the cover joint portion. The connector includes a connector outside surface exposed between the two arm portions, and including circumferential end portions adjacent to the arm portions and overlapping with an imaginary line joining distal ends of the two arm portions or located radially inward of the imaginary line when viewed in the axial direction.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: February 22, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Takashi Hattori, Yuichi Nishikawa, Yuki Hamada, Yu Kuwamoto
  • Patent number: 11165311
    Abstract: A motor includes a heat sink including a first portion and a second portion located on a circumference identical to the first portion and extending along a circumferential direction. An axial thickness of the first portion is larger than an axial thickness of the second portion. A lower surface of the second portion is located axially above a lower surface of the first portion. A busbar is located axially below the second portion.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: November 2, 2021
    Assignee: NIDEC CORPORATION
    Inventors: Takashi Hattori, Takahiro Kizu, Toshiya Okamoto, Yuichi Nishikawa, Yoshiaki Yamashita
  • Patent number: 11088594
    Abstract: A motor includes a rotor, a stator, a housing, a heat sink, a substrate, a connector, and a cover. The connector includes a connector shell with a shell projection or shell recess. The heat sink includes a heat sink body and a heat sink protrusion. The heat sink protrusion includes a heat sink recess or heat sink projection. The shell projection or shell recess, and the heat sink recess or heat sink projection are fitted through a gap.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: August 10, 2021
    Assignee: Nidec Corporation
    Inventors: Takashi Hattori, Yusaku Yoshida, Toshiya Okamoto, Takahiro Kizu, Yuichi Nishikawa
  • Publication number: 20210143708
    Abstract: A motor includes a heat sink including a first portion and a second portion located on a circumference identical to the first portion and extending along a circumferential direction. An axial thickness of the first portion is larger than an axial thickness of the second portion. A lower surface of the second portion is located axially above a lower surface of the first portion. A busbar is located axially below the second portion.
    Type: Application
    Filed: December 7, 2017
    Publication date: May 13, 2021
    Inventors: Takashi HATTORI, Takahiro KIZU, Toshiya OKAMOTO, Yuichi NISHIKAWA, Yoshiaki YAMASHITA
  • Patent number: 10958130
    Abstract: A motor includes a rotor, a stator, a housing, and a flange. The housing includes a first cylindrical portion, a contact portion extending radially inward from an axial lower end of the first cylindrical portion, a second cylindrical portion that extends axially downward from a radial inner edge of the contact portion and has a smaller outer diameter than the first cylindrical portion, and a bottom portion extending radially inward from an axial lower end of the second cylindrical portion. The flange includes a flange cylindrical portion, and a flange flat portion extending radially outward from an axial lower end of the flange cylindrical portion. The flange cylindrical portion is fixed to an outer surface of the second cylindrical portion and an upper end of the flange cylindrical portion contacts with an outside lower surface of the contact portion.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: March 23, 2021
    Assignee: NIDEC CORPORATION
    Inventors: Takahiro Kizu, Takashi Hattori, Toshiya Okamoto, Yuichi Nishikawa
  • Patent number: 10958131
    Abstract: A motor includes a rotor, a stator, a housing, a substrate, a connector, and a cover. The cover includes a covering wall that extends axially downward from a radial outer rim and covers at least a portion of the radial outer rim of the connector, and a cover recess that is radially inward from the covering wall and is depressed axially. The connector includes a connector projection that is provided in a radial outer edge area and extends axially, and the connector projection and the cover recess are fitted together through a gap.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: March 23, 2021
    Assignee: NIDEC CORPORATION
    Inventors: Takashi Hattori, Yusaku Yoshida, Toshiya Okamoto, Takahiro Kizu, Yuichi Nishikawa
  • Patent number: 10958129
    Abstract: A motor includes a rotor with a shaft that extends axially, a stator that surrounds a radial outer side of the rotor, a heat sink that is axially above the stator and provided with cavities that pass conductors therethrough and extend axially, and a substrate that is axially above the heat sink and includes an electronic component mounted thereon, wherein the heat sink includes a contact surface that contacts the substrate or electronic component directly or via a heat dissipating member and an exposed surface that does not come into contact with other members, wherein the exposed surface is located closer to an outer edge than the cavities.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: March 23, 2021
    Assignee: NIDEC CORPORATION
    Inventors: Takahiro Kizu, Takashi Hattori, Toshiya Okamoto, Yuichi Nishikawa, Yoshiaki Yamashita
  • Patent number: 10958132
    Abstract: A motor includes a heat sink including an inner region, and an outer region located radially outward from the inner region. An axial thickness of the inner region is larger than an axial thickness of the outer region, the bottom surface of the outer region is located axially above the bottom surface of the inner region, and the inner region and the electronic component at least partially overlap in an axial direction. A bus bar holder is located axially below the outer region and overlaps the inner region in a radial direction.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: March 23, 2021
    Assignee: NIDEC CORPORATION
    Inventors: Takashi Hattori, Takahiro Kizu, Toshiya Okamoto, Yuichi Nishikawa, Yoshiaki Yamashita
  • Patent number: 10938271
    Abstract: A motor includes a rotor including a shaft that extends axially, a stator that surrounds the radial outer side of the rotor and includes coils defined by windings of coil wires, a holder with through-holes that is axially above the stator for insertion of the coil wires therethrough and extends axially, and a substrate that is axially above the holder and includes an electronic component mounted thereon. Only some of the coil wires with the same phase are inserted into each of the through-holes, and the through-holes are separate holes provided to different phases of the coil wires.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: March 2, 2021
    Assignee: NIDEC CORPORATION
    Inventors: Takashi Hattori, Takahiro Kizu, Toshiya Okamoto, Yuichi Nishikawa, Yoshiaki Yamashita
  • Patent number: 10938262
    Abstract: A motor includes a rotor including a shaft extending axially, a stator surrounding a radial outside of the rotor and including a coil defined by a wound coil wire, a holder disposed on an axially upper side of the stator, the coil wire being inserted into the holder, the holder including through-holes extending axially, and a circuit board disposed on the axially upper side of the holder, an electronic component being mounted on the circuit board. When the holder is viewed from the axially upper side, the through-holes are located in a region where a center angle (?) centered on the shaft is less than or equal to 180 degrees.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: March 2, 2021
    Assignee: NIDEC CORPORATION
    Inventors: Takashi Hattori, Takahiro Kizu, Toshiya Okamoto, Yuichi Nishikawa, Yoshiaki Yamashita, Mitsuo Kodama, Yuya Saito, Shingo Fukumoto, Chiharu Kobayashi
  • Publication number: 20200313494
    Abstract: A motor includes a motor body, a housing, a controller, and a cover. The housing includes an annular cover joint that surrounds the controller. The cover joint includes a stepped portion on a side surface of the housing. The stepped portion includes a first surface that faces in the radial direction, and an upward second surface that extends radially from the lower end of the first surface. The cover includes a cylindrical portion radially facing the first surface of the cover joint. An adhesive bonds the first surface of the cover joint and a surface facing the radial direction of the cylindrical portion, and bonds the second surface of the cover joint and an end surface facing the lower side of the cylindrical portion.
    Type: Application
    Filed: February 10, 2020
    Publication date: October 1, 2020
    Inventors: Takashi HATTORI, Yuichi NISHIKAWA, Takao ATARASHI, Yuki HAMADA, Yu KUWAMOTO
  • Publication number: 20200313515
    Abstract: A motor includes a motor body, a housing, a heat sink, a controller, a connector, and a cover. The heat sink includes two arm portions each extending radially outward. The connector is held between the two arm portions. The heat sink and the connector include a cover joint portion extending all the way around surfaces of the heat sink and the connector along a circumferential direction, is loop-shaped, and surrounds the controller, when viewed in an axial direction. The cover is joined to the cover joint portion. The connector includes a connector outside surface exposed between the two arm portions, and including circumferential end portions adjacent to the arm portions and overlapping with an imaginary line joining distal ends of the two arm portions or located radially inward of the imaginary line when viewed in the axial direction.
    Type: Application
    Filed: February 10, 2020
    Publication date: October 1, 2020
    Inventors: Takashi HATTORI, Yuichi NISHIKAWA, Yuki HAMADA, Yu KUWAMOTO
  • Publication number: 20200313493
    Abstract: A motor includes a motor main body, a housing, a heat sink, a controller, a connector, and a cover that surrounds the controller and the connector. The heat sink includes a connector holder including an open outer side in a radial direction and holding the connector. The motor includes a ring-shaped cover joint portion that surrounds the controller and includes a stepped portion that includes a first surface and a second surface. The cover includes a cylindrical portion that faces the first surface in the radial direction. The motor includes a waterproof material that seals a portion between the cylindrical portion and the first surface or a portion between the cylindrical portion and the second surface.
    Type: Application
    Filed: February 7, 2020
    Publication date: October 1, 2020
    Inventors: Takashi HATTORI, Yuichi NISHIKAWA, Yuki HAMADA, Yu KUWAMOTO