Patents by Inventor Takahiro KIZU

Takahiro KIZU 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: 20190283798
    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: Application
    Filed: March 30, 2017
    Publication date: September 19, 2019
    Inventors: Takashi HATTORI, Yusaku YOSHIDA, Toshiya OKAMOTO, Takahiro KIZU, Yuichi NISHIKAWA
  • Publication number: 20190280566
    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: Application
    Filed: March 30, 2017
    Publication date: September 12, 2019
    Inventors: Takashi HATTORI, Takahiro KIZU, Toshiya OKAMOTO, Yuichi NISHIKAWA, Yoshiaki YAMASHITA
  • Publication number: 20190280567
    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: Application
    Filed: March 30, 2017
    Publication date: September 12, 2019
    Inventors: Takashi HATTORI, Takahiro KIZU, Toshiya OKAMOTO, Yuichi NISHIKAWA, Yoshiaki YAMASHITA
  • Publication number: 20190273416
    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: Application
    Filed: March 30, 2017
    Publication date: September 5, 2019
    Inventors: Takahiro KIZU, Takashi HATTORI, Toshiya OKAMOTO, Yuichi NISHIKAWA
  • Publication number: 20190267862
    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: Application
    Filed: March 30, 2017
    Publication date: August 29, 2019
    Inventors: Takashi HATTORI, Takahiro KIZU, Toshiya OKAMOTO, Yuichi NISHIKAWA, Yoshiaki YAMASHITA, Mitsuo KODAMA, Yuya SAITO, Shingo FUKUMOTO, Chiharu KOBAYASHI
  • Publication number: 20190115806
    Abstract: A motor may include a rotor having a rotating shaft extending in an up-down direction, a stator that opposes the rotor, a housing that holds the stator, a heat sink that is attached to the housing, and a circuit board on which electronic components are mounted and which is disposed on a lower surface of the heat sink. The electronic components may include a heat-generating element. The housing may include a cylindrical portion and a flange portion extending outward in a radial direction from an upper end of the cylindrical portion. The heat sink may have a protruding portion protruding downward in an axial direction and is attached to an upper surface of the flange portion in the axial direction using a fixing member. The heat-generating element may be in contact with the heat sink via a heat-conducting member.
    Type: Application
    Filed: March 21, 2017
    Publication date: April 18, 2019
    Inventors: Yoshiaki YAMASHITA, Takashi HATTORI, Takahiro KIZU
  • Patent number: 10063120
    Abstract: A motor may include a rotor including a shaft having a central axis; a stator opposite to the rotor, and comprising coils; a bearing supporting the shaft; a metallic bearing holder covering the stator and supporting the bearing; at least one busbar on an opposite axial side of the bearing holder and including a connection terminal connected with a a coil wire extending from one of the coils; and a coil support between the stator and the bearing holder and fixed to the stator. The bearing holder may include at least one through hole. The coil support may include at least one insulating support portion comprising an opening portion. A portion of the opening portion of the insulating support portion having a smallest cross-sectional area in the opening portion lies inside of an edge of one of the through holes of the bearing holder.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: August 28, 2018
    Assignee: NIDEC CORPORATION
    Inventors: Tatsuro Kawamoto, Takayuki Migita, Takao Atarashi, Masateru Kawakami, Takahiro Kizu
  • Publication number: 20180233984
    Abstract: A motor includes a rotor that has a shaft with a central axis extending in a vertical direction as a center, a stator disposed so as to face the rotor in a radial direction, a bearing that supports the shaft, a wire support member disposed above the stator, and a bearing holder disposed above the wire support member to hold the bearing. The stator includes a plurality of teeth, and a plurality of coils provided on the plurality of teeth. The wire support member includes a wire holding portion that holds one portion of coil lead wires among the coil lead wires drawn out from the coil, a conducting member that electrically connects the other portion of the coil lead wires to each other, and a main body portion that supports the wire holding portion and the conducting member.
    Type: Application
    Filed: August 9, 2016
    Publication date: August 16, 2018
    Applicant: Nidec Corporation
    Inventors: Kosuke OGAWA, Takashi HATTORI, Shunsuke MURAKAMI, Takao ATARASHI, Hidehiro HAGA, Yoshiaki YAMASHITA, Takahiro KIZU, Toshiya OKAMOTO
  • Publication number: 20160294240
    Abstract: A motor may include a rotor including a shaft having a central axis; a stator opposite to the rotor, and comprising coils; a bearing supporting the shaft; a metallic bearing holder covering the stator and supporting the bearing; at least one busbar on an opposite axial side of the bearing holder and including a connection terminal connected with a a coil wire extending from one of the coils; and a coil support between the stator and the bearing holder and fixed to the stator. The bearing holder may include at least one through hole. The coil support may include at least one insulating support portion comprising an opening portion. A portion of the opening portion of the insulating support portion having a smallest cross-sectional area in the opening portion lies inside of an edge of one of the through holes of the bearing holder.
    Type: Application
    Filed: March 30, 2016
    Publication date: October 6, 2016
    Inventors: Tatsuro KAWAMOTO, Takayuki MIGITA, Takao ATARASHI, Masateru KAWAKAMI, Takahiro KIZU