Patents by Inventor Koji Hotta

Koji Hotta 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: 11522402
    Abstract: In a stator, coils of multiple phases are wound around a stator core via an insulator. A guide member is provided on one side of the stator core in the axial direction and guides the terminal line of the coil in the circumferential direction at a position overlapping the coil in the axial direction. Parts of the plurality of terminal lines drawn in the circumferential direction on the bottom part, which is the same end surface in the axial direction of the guide member, are shifted in the axial direction and the radial direction respectively.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: December 6, 2022
    Assignee: DENSO CORPORATION
    Inventor: Koji Hotta
  • Patent number: 11482906
    Abstract: In a stator, coils of multiple phases are wound around a stator core via an insulator. A guide member is provided on one side of the stator core in the axial direction and guides the terminal line of the coil in the circumferential direction at a position overlapping the coil in the axial direction. The coils have coils of different systems connected to circuits of different systems. The guide member has a collecting portion that collects the terminal lines of the different systems at one place in the circumferential direction.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: October 25, 2022
    Assignee: DENSO CORPORATION
    Inventor: Koji Hotta
  • Patent number: 11437880
    Abstract: In a stator, coils of multiple phases are wound around a stator core via an insulator. A guide member is provided on one side of the stator core in the axial direction and guides the terminal line of the coil in the circumferential direction at a position overlapping the coil in the axial direction. The guide member has a collecting portion which collect the terminal lines at one place in the circumferential direction. The terminal line of the coil arranged in a vicinity of the collecting portion in the terminal line is a non-drawn terminal wire that is collected in the collecting portion without being drawn on the guide member in the circumferential direction.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: September 6, 2022
    Assignee: DENSO CORPORATION
    Inventor: Koji Hotta
  • Patent number: 11342806
    Abstract: In a stator, coils of a plurality of phases are wound around a stator core via an insulator. A guide member is provided on one side of the stator core in the axial direction and guides the terminal line of the coil in the circumferential direction at a position overlapping the coil in the axial direction. The guide member has a notch that penetrates in the axial direction in a shape having a guide portion extending radially inward from the radially outer end portion of the guide member and leads the terminal line to one side in the axial direction. End surfaces in the radial direction of the notch, and a bottom part which is one end surface in the axial direction of the guide member is drawn in the circumferential direction, are connected by the recessed part having a recessed shape.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: May 24, 2022
    Assignee: DENSO CORPORATION
    Inventor: Koji Hotta
  • Patent number: 11322996
    Abstract: A motor includes a rotation shaft, a rotor, and a stator. The rotor includes a rotor core and magnetic pole portions respectively including permanent magnets embedded in the rotor core. The magnetic pole portions have polarities that differ alternately in a circumferential direction. A projection projecting radially outward from an outer circumferential portion of the rotor core is arranged between the magnetic pole portions having different polarities. In a radial opposing relationship of the rotor core and the teeth taken at different times while the rotor is revolved once, at a certain time, a quantity of the teeth that oppose one of the magnetic pole portions and do not oppose the projection is greater than a quantity of the teeth that simultaneously oppose two of the magnetic pole portions adjacent to each other in the circumferential direction and the projection located in between the magnetic pole portions.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: May 3, 2022
    Assignee: DENSO CORPORATION
    Inventors: Koji Mikami, Akihiro Utsumi, Yoshiaki Takemoto, Koji Hotta
  • Patent number: 11296582
    Abstract: A stator includes a stator core, multiphase coils wound on the stator core, and a guide member. The multiphase coils include two or more terminal wires. The guide member is arranged on an end of the stator core located at one side in an axial direction to guide the terminal wires of the multiphase coils wound on the stator core. The guide member includes steps having a diameter that gradually decreases toward a side opposite to the stator core in the axial direction. Ones of the multiphase coils having the terminal wires that are drawn in a circumferential direction toward the same side are laid out on one of the steps.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: April 5, 2022
    Assignee: DENSO CORPORATION
    Inventors: Koji Hotta, Motoki Uehama, Takumi Suzuki
  • Patent number: 11245304
    Abstract: In a stator, a coil is wound around a stator core. A guide member is provided on one side of the stator core in the axial direction and guides the terminal line of the coil in the circumferential direction at a position overlapping the coil in the axial direction. The terminal line of a first coil includes a first axial extension part led out to one side in the axial direction. The terminal line of a second coil adjacent to the first coil on one side in the circumferential direction includes a second axial extension part led out to one side in the axial direction. A first position, which is a base end of the first axial extension part, and a second position, which is a base end of the second axial extension part, are set to the positions where are different in the radial direction.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: February 8, 2022
    Assignee: DENSO CORPORATION
    Inventor: Koji Hotta
  • Patent number: 11128192
    Abstract: A motor includes a stator a rotor, and a guide member. The stator includes a stator core and multiphase coils wound on the stator core. The guide member is arranged on an end of the stator core located at one side in an axial direction to glide a terminal wire of the multiphase coils wound on the stator core. The guide member includes an outlet guide that draws the terminal wire out of the guide member toward a circuit board. The outlet guide includes insertion holes into which the terminal wire is inserted. The insertion holes each include an inlet located toward the stator core and an outlet. The inlet has a larger open area than the outlet.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: September 21, 2021
    Assignee: DENSO CORPORATION
    Inventors: Koji Hotta, Motoki Uehama
  • Publication number: 20210218299
    Abstract: A motor includes a rotation shaft, a rotor, and a stator. The rotor includes a rotor core and magnetic pole portions respectively including permanent magnets embedded in the rotor core. The magnetic pole portions have polarities that differ alternately in a circumferential direction. A projection projecting radially outward from an outer circumferential portion of the rotor core is arranged between the magnetic pole portions having different polarities. In a radial opposing relationship of the rotor core and the teeth taken at different times while the rotor is revolved once, at a certain time, a quantity of the teeth that oppose one of the magnetic pole portions and do not oppose the projection is greater than a quantity of the teeth that simultaneously oppose two of the magnetic pole portions adjacent to each other in the circumferential direction and the projection located in between the magnetic pole portions.
    Type: Application
    Filed: March 26, 2019
    Publication date: July 15, 2021
    Applicant: DENSO CORPORATION
    Inventors: Koji MIKAMI, Akihiro UTSUMI, Yoshiaki TAKEMOTO, Koji HOTTA
  • Publication number: 20200259384
    Abstract: In a stator, coils of multiple phases are wound around a stator core via an insulator. A guide member is provided on one side of the stator core in the axial direction and guides the terminal line of the coil in the circumferential direction at a position overlapping the coil in the axial direction. Parts of the plurality of terminal lines drawn in the circumferential direction on the bottom part, which is the same end surface in the axial direction of the guide member, are shifted in the axial direction and the radial direction respectively.
    Type: Application
    Filed: January 27, 2020
    Publication date: August 13, 2020
    Inventor: Koji HOTTA
  • Publication number: 20200259389
    Abstract: In a stator, coils of multiple phases are wound around a stator core via an insulator. A guide member is provided on one side of the stator core in the axial direction and guides the terminal line of the coil in the circumferential direction at a position overlapping the coil in the axial direction. The guide member has a collecting portion which collect the terminal lines at one place in the circumferential direction. The terminal line of the coil arranged in a vicinity of the collecting portion in the terminal line is a non-drawn terminal wire that is collected in the collecting portion without being drawn on the guide member in the circumferential direction.
    Type: Application
    Filed: January 27, 2020
    Publication date: August 13, 2020
    Inventor: Koji HOTTA
  • Publication number: 20200259387
    Abstract: In a stator, a coil is wound around a stator core. A guide member is provided on one side of the stator core in the axial direction and guides the terminal line of the coil in the circumferential direction at a position overlapping the coil in the axial direction. The terminal line of a first coil includes a first axial extension part led out to one side in the axial direction. The terminal line of a second coil adjacent to the first coil on one side in the circumferential direction includes a second axial extension part led out to one side in the axial direction. A first position, which is a base end of the first axial extension part, and a second position, which is a base end of the second axial extension part, are set to the positions where are different in the radial direction.
    Type: Application
    Filed: January 27, 2020
    Publication date: August 13, 2020
    Inventor: Koji HOTTA
  • Publication number: 20200259388
    Abstract: In a stator, coils of multiple phases are wound around a stator core via an insulator. A guide member is provided on one side of the stator core in the axial direction and guides the terminal line of the coil in the circumferential direction at a position overlapping the coil in the axial direction. The coils have coils of different systems connected to circuits of different systems. The guide member has a collecting portion that collects the terminal lines of the different systems at one place in the circumferential direction.
    Type: Application
    Filed: January 27, 2020
    Publication date: August 13, 2020
    Inventor: Koji HOTTA
  • Publication number: 20200259386
    Abstract: In a stator, coils of a plurality of phases are wound around a stator core via an insulator. A guide member is provided on one side of the stator core in the axial direction and guides the terminal line of the coil in the circumferential direction at a position overlapping the coil in the axial direction. The guide member has a notch that penetrates in the axial direction in a shape having a guide portion extending radially inward from the radially outer end portion of the guide member and leads the terminal line to one side in the axial direction. End surfaces in the radial direction of the notch, and a bottom part which is one end surface in the axial direction of the guide member is drawn in the circumferential direction, are connected by the recessed part having a recessed shape.
    Type: Application
    Filed: January 27, 2020
    Publication date: August 13, 2020
    Inventor: Koji HOTTA
  • Patent number: 10736238
    Abstract: A semiconductor device may include a stack in which a cooler and a semiconductor module are stacked, the semiconductor module housing a semiconductor element; a contact plate contacting the stack in a stacking direction of the semiconductor module and the cooler; and a spring contacting the contact plate and pressurizing the stack via the contact plate in the stacking direction, wherein the spring may contact a center portion of the contact plate in a direction perpendicular to the stacking direction, and a recess or a cavity may be provided at the center portion of the contact plate, the recess facing the stack.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: August 4, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazunori Uchiyama, Naoki Hakamada, Tomo Sasaki, Masataka Deguchi, Koji Hotta, Tadafumi Yoshida
  • Publication number: 20200014288
    Abstract: A stator includes a stator core, multiphase coils wound on the stator core, and a guide member. The multiphase coils include two or more terminal wires. The guide member is arranged on an end of the stator core located at one side in an axial direction to guide the terminal wires of the multiphase coils wound on the stator core. The guide member includes steps having a diameter that gradually decreases toward a side opposite to the stator core in the axial direction. Ones of the multiphase coils having the terminal wires that are drawn in a circumferential direction toward the same side are laid out on one of the steps.
    Type: Application
    Filed: May 30, 2019
    Publication date: January 9, 2020
    Applicant: DENSO CORPORATION
    Inventors: Koji HOTTA, Motoki UEHAMA, Takumi SUZUKI
  • Publication number: 20200014268
    Abstract: A motor includes a stator a rotor, and a guide member. The stator includes a stator core and multiphase coils wound on the stator core. The guide member is arranged on an end of the stator core located at one side in an axial direction to glide a terminal wire of the multiphase coils wound on the stator core. The guide member includes an outlet guide that draws the terminal wire out of the guide member toward a circuit board. The outlet guide includes insertion holes into which the terminal wire is inserted. The insertion holes each include an inlet located toward the stator core and an outlet. The inlet has a larger open area than the outlet.
    Type: Application
    Filed: May 30, 2019
    Publication date: January 9, 2020
    Applicant: DENSO CORPORATION
    Inventors: Koji HOTTA, Motoki UEHAMA
  • Publication number: 20190246517
    Abstract: A semiconductor device may include a stack in which a cooler and a semiconductor module are stacked, the semiconductor module housing a semiconductor element; a contact plate contacting the stack in a stacking direction of the semiconductor module and the cooler; and a spring contacting the contact plate and pressurizing the stack via the contact plate in the stacking direction, wherein the spring may contact a center portion of the contact plate in a direction perpendicular to the stacking direction, and a recess or a cavity may be provided at the center portion of the contact plate, the recess facing the stack.
    Type: Application
    Filed: January 31, 2019
    Publication date: August 8, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazunori Uchiyama, Naoki Hakamada, Tomo Sasaki, Masataka Deguchi, Koji Hotta, Tadafumi Yoshida
  • Patent number: 9469201
    Abstract: A vehicle equipment mounting structure that arranges a motor case, in which a rotary electric machine that drives a vehicle is housed, in an engine compartment, and that includes a PCU that controls the rotary electric machine, and an auxiliary battery that supplies electric power to the PCU. This structure includes a fixing portion that fixes the PCU onto the motor case, and a connecting portion that connects the auxiliary battery to a side member that absorbs an impact load by being crushed in a crushing direction. The connecting portion has a displaceable member that is displaceable in the crushing direction. The auxiliary battery is arranged on a vehicle front side of the PCU such that the PCU and the auxiliary battery partially overlap in the crushing direction. The auxiliary battery is arranged so as to be able to move past the PCU in response to an impact load.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: October 18, 2016
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.
    Inventors: Koji Hotta, Kenshi Yamanaka, Yutaka Hotta
  • Patent number: 9472942
    Abstract: A current sensor and so forth are provided capable of detecting an overcurrent of a wiring line and disconnecting the wiring line while reducing layout space and cost. A current detection part detecting a current flowing through the wiring line, a disconnection mechanism disconnecting the wiring line, and a drive circuit driving the disconnection mechanism are included in the same housing. A current detection circuit included in the current detection part and the drive circuit are placed on the same substrate.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: October 18, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Koji Hotta