Patents by Inventor Takehiro Imamura

Takehiro Imamura 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: 11368069
    Abstract: A rotary electric machine unit includes: a rotary electric machine; and a case that accommodates the rotary electric machine. The rotary electric machine includes: a stator core; a multi-phase coil that is attached to the stator core; a conductive member holder that collectively holds a conductive member connected to a coil end of the multi-phase coil and is disposed outside the coil end in a radial direction; and a terminal block that is fixed to a fastening surface of the case and electrically connects a terminal portion of a power distribution member with a terminal portion of the conductive member. The terminal block is disposed outside the conductive member holder in the radial direction, and at least a part of the terminal block overlaps the conductive member holder in the radial direction.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: June 21, 2022
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takehiro Imamura, Misa Aneha
  • Patent number: 11121602
    Abstract: A stator of a rotary electric machine comprises a stator core, a coil; and a plurality of bus bars. When viewed from a rotational axis direction of the rotary electric machine, the first terminal parts of the plurality of bus bars are arranged next to one another substantially in an upper and lower direction on the outside of the stator core in the radial direction, and the second terminal parts of the plurality of bus bars are arranged next to one another substantially in a horizontal direction above the stator core, and a first terminal part arranged on an uppermost side among the first terminal parts of the plurality of bus bars is arranged to be positioned below an uppermost part of the stator core.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: September 14, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yoshiaki Seki, Misa Aneha, Hideyuki Yoshida, Takehiro Imamura
  • Patent number: 10937563
    Abstract: A bus bar unit related to one aspect includes: a first bus bar and a second bus bar. The first bus bar and the second bus bar are arranged side by side in a second direction orthogonal to a first direction as viewed from the first direction. The first bus bar includes, as viewed from the first direction, a first straight line portion, a first inclined portion, and a first bent portion. The second bus bar includes, as viewed from the first direction, a second straight line portion, a second inclined portion, and a second bent portion. In an end surface on a second bus bar side of the first bent portion, a distance between the first bent portion and the second inclined portion is longer than a distance between the first bent portion and the second straight line portion.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: March 2, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takehiro Imamura, Misa Aneha, Takahiro Mihara
  • Publication number: 20200273599
    Abstract: A bus bar unit related to one aspect includes: a first bus bar and a second bus bar. The first bus bar and the second bus bar are arranged side by side in a second direction orthogonal to a first direction as viewed from the first direction. The first bus bar includes, as viewed from the first direction, a first straight line portion, a first inclined portion, and a first bent portion. The second bus bar includes, as viewed from the first direction, a second straight line portion, a second inclined portion, and a second bent portion. In an end surface on a second bus bar side of the first bent portion, a distance between the first bent portion and the second inclined portion is longer than a distance between the first bent portion and the second straight line portion.
    Type: Application
    Filed: February 25, 2020
    Publication date: August 27, 2020
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Takehiro IMAMURA, Misa ANEHA, Takahiro MIHARA
  • Publication number: 20200274418
    Abstract: A rotary electric machine unit includes: a rotary electric machine; and a case that accommodates the rotary electric machine. The rotary electric machine includes: a stator core; a multi-phase coil that is attached to the stator core, a conductive member holder that collectively holds a conductive member connected to a coil end of the multi-phase coil and is disposed outside the coil end in a radial direction; and a terminal block that is fixed to a fastening surface of the case and electrically connects a terminal portion of a power distribution member with a terminal portion of the conductive member. The terminal block is disposed outside the conductive member holder in the radial direction, and at least a part of the terminal block overlaps the conductive member holder in the radial direction.
    Type: Application
    Filed: February 25, 2020
    Publication date: August 27, 2020
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Takehiro IMAMURA, Misa ANEHA
  • Publication number: 20200036260
    Abstract: A stator of a rotary electric machine comprises a stator core, a coil; and a plurality of bus bars. When viewed from a rotational axis direction of the rotary electric machine, the first terminal parts of the plurality of bus bars are arranged next to one another substantially in an upper and lower direction on the outside of the stator core in the radial direction, and the second terminal parts of the plurality of bus bars are arranged next to one another substantially in a horizontal direction above the stator core, and a first terminal part arranged on an uppermost side among the first terminal parts of the plurality of bus bars is arranged to be positioned below an uppermost part of the stator core.
    Type: Application
    Filed: July 23, 2019
    Publication date: January 30, 2020
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Yoshiaki SEKI, Misa ANEHA, Hideyuki YOSHIDA, Takehiro IMAMURA
  • Publication number: 20190305639
    Abstract: A rotary electric machine includes a rotor, a stator including a stator core and a stator coil attached to the stator core, the stator being disposed opposed to the rotor, and a case accommodating the rotor and the stator. In the stator coil, coils of a plurality of phases are connected by a neutral point bus bar. The neutral point bus bar is provided at a coil end protruding in an axial direction from one end surface of the stator core. A cooling pipe for cooling the stator coil is provided inside the case. The cooling pipe includes a first refrigerant supply hole for discharging a refrigerant toward the coil end and a second refrigerant supply hole for discharging the refrigerant toward the neutral point bus bar.
    Type: Application
    Filed: March 27, 2019
    Publication date: October 3, 2019
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Yoshiaki SEKI, Takehiro IMAMURA, Ryo AKAMATSU, Hideyuki YOSHIDA, Hiroshi YAMASHITA, Toshio OKAZAWA
  • Patent number: 6940199
    Abstract: In a rotor 20 including a plurality of permanent magnet pieces 60 fixed in a plurality of magnet insertion slots 43 provided on the outer periphery of a rotor yoke 40, respectively, and the rotor yoke 40 having concaves 44 each provided between the permanent magnet pieces 60 adjacent to each other and protrusions 46 each provided in each the concaves 44 to protrude outwardly in the radial direction of the rotor yoke 40, between the sandwiching angle ? formed by two sides connecting both outer ends A and A? of each the concaves 44 to the center axis O of the rotor yoke 40 and the sandwiching angle ? formed by two sides connecting both outer ends B and B? of each the protrusions 46 to the center axis O of the rotor yoke 40, the following relationship is satisfied: 0.3<?/?<0.5.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: September 6, 2005
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takehiro Imamura, Minoru Nakajima
  • Publication number: 20050110356
    Abstract: In a rotor 20 including a plurality of permanent magnet pieces 60 fixed in a plurality of magnet insertion slots 43 provided on the outer periphery of a rotor yoke 40, respectively, and the rotor yoke 40 having concaves 44 each provided between the permanent magnet pieces 60 adjacent to each other and protrusions 46 each provided in each the concaves 44 to protrude outwardly in the radial direction of the rotor yoke 40, between the sandwiching angle ? formed by two sides connecting both outer ends A and A? of each the concaves 44 to the center axis O of the rotor yoke 40 and the sandwiching angle ? formed by two sides connecting both outer ends B and B? of each the protrusions 46 to the center axis O of the rotor yoke 40, the following relationship is satisfied: 0.3<?/?<0.
    Type: Application
    Filed: October 5, 2004
    Publication date: May 26, 2005
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Takehiro Imamura, Minoru Nakajima