Patents by Inventor Masaki Ishizeki

Masaki Ishizeki 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: 20230272767
    Abstract: A control device of a vehicle, the vehicle includes an engine, a hydraulic clutch disposed on a power transmission path between the engine and driving wheels, a starter motor for use in startup of the engine, an electric oil pump device discharging hydraulic oil generating oil pressure supplied to the clutch, and a power supply device supplying electric power driving each of the starter motor and the electric oil pump device. The control device includes a startup control unit that performs starter startup control of starting discharge of the hydraulic oil by the electric oil pump device after determining that output voltage of the power supply device or input voltage of the electric oil pump device is higher than or equal to a fixed voltage after completion of cranking by the starter motor upon startup of the engine using the starter motor.
    Type: Application
    Filed: February 22, 2023
    Publication date: August 31, 2023
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, MITSUBA CORPORATION
    Inventors: Tomohiro CHIMBE, Shinji Shibuya, Masahiro Fueki, Masaki Ishizeki, Miya Yamada, Kenji Kamio
  • Patent number: 10128720
    Abstract: This electric motor includes: a brushless motor (20); and a control device (50) that is coupled integrally to an end of a motor case (11) in an axial direction. The control device (50) includes: a bus bar unit main body (53) that has a base unit (54) with a plurality of bus bars wired thereinside and has a connector unit (58) provided integrally on the base unit (54) and led out to an outside of a housing (10); a motor drive unit (66) that drives the brushless motor (20); and a motor control unit (71) that controls the motor drive unit (66). The motor drive unit (66) is attached to a first main surface (51) of the base unit (54) while the motor control unit (71) is attached to a second main surface (52) of the base unit (54).
    Type: Grant
    Filed: December 25, 2013
    Date of Patent: November 13, 2018
    Assignee: Mitsuba Corporation
    Inventors: Masaki Ishizeki, Yoichi Shindo, Shinji Shibuya, Ken Hirota, Atsushi Takahashi, Yuzuru Masuyama, Tomoo Iijima, Ken Yamamoto, Nobuyasu Sadakata, Shigeyuki Enkaku
  • Patent number: 9605642
    Abstract: A starter includes a motor unit, a drive shaft configured to receive a rotational force of the motor unit and rotate, a transmission pinion gear installed on the drive shaft, an idle shaft extending in a direction parallel to the drive shaft, an idle gear installed on the idle shaft and configured to mesh with the transmission pinion gear, a driving pinion gear installed on the idle shaft and configured to mesh with a ring gear of an engine, a gear cover configured to rotatably support portions of the drive shaft and the idle shaft and accommodate the transmission pinion gear and the idle gear, and a bracket section installed between the motor unit and the gear cover and configured to rotatably support a first end in an axial direction of the idle shaft.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: March 28, 2017
    Assignee: Mitsuba Corporation
    Inventors: Tomohiko Ikemori, Masaaki Oya, Chihiro Horikoshi, Koki Honda, Ken Noguchi, Masaki Ishizeki
  • Publication number: 20150357886
    Abstract: This electric motor includes: a brushless motor (20); and a control device (50) that is coupled integrally to an end of a motor case (11) in an axial direction. The control device (50) includes: a bus bar unit main body (53) that has a base unit (54) with a plurality of bus bars wired thereinside and has a connector unit (58) provided integrally on the base unit (54) and led out to an outside of a housing (10); a motor drive unit (66) that drives the brushless motor (20); and a motor control unit (71) that controls the motor drive unit (66). The motor drive unit (66) is attached to a first main surface (51) of the base unit (54) while the motor control unit (71) is attached to a second main surface (52) of the base unit (54).
    Type: Application
    Filed: December 25, 2013
    Publication date: December 10, 2015
    Applicant: MITSUBA Corporation
    Inventors: Masaki Ishizeki, Yoichi Shindo, Shinji Shibuya, Ken Hirota, Atsushi Takahashi, Yuzuru Masuyama, Tomoo Iijima, Ken Yamamoto, Nobuyasu Sadakata, Shigeyuki Enkaku
  • Publication number: 20140366686
    Abstract: A starter includes a motor unit, a drive shaft configured to receive a rotational force of the motor unit and rotate, a transmission pinion gear installed on the drive shaft, an idle shaft extending in a direction parallel to the drive shaft, an idle gear installed on the idle shaft and configured to mesh with the transmission pinion gear, a driving pinion gear installed on the idle shaft and configured to mesh with a ring gear of an engine, a gear cover configured to rotatably support portions of the drive shaft and the idle shaft and accommodate the transmission pinion gear and the idle gear, and a bracket section installed between the motor unit and the gear cover and configured to rotatably support a first end in an axial direction of the idle shaft.
    Type: Application
    Filed: June 12, 2014
    Publication date: December 18, 2014
    Inventors: Tomohiko Ikemori, Masaaki Oya, Chihiro Horikoshi, Koki Honda, Ken Noguchi, Masaki Ishizeki
  • Patent number: 7884520
    Abstract: A brushless motor according to the present invention is provided with a tubular stator case, a stator core fitted into the stator case, and a rotor rotatably supported via a bearing inside the stator core. The stator core includes a tubular yoke portion and a plurality of split cores which are detachably mounted on the tubular yoke portion. A plurality of commutating-pole teeth which extend radially inward are integrally formed on an inner peripheral surface of the tubular yoke portion at regular intervals in the peripheral direction of the tubular yoke portion; and a root portion of each of the commutating-pole teeth has inclined shoulders which are gradually enlarged radially outward.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: February 8, 2011
    Assignees: Mitsuba Corporation, Honda Motor Co., Ltd.
    Inventors: Hisashi Ishida, Tohru Yumoto, Masaki Ishizeki, Susumu Miyazaki, Kazushi Hamaya
  • Patent number: 7816827
    Abstract: A brushless motor is provided with: a tubular stator case; a stator core; a rotor rotatably supported via a bearing inside the stator core; a bracket which closes an opening at one end of the stator case; a coil bobbin around which a coil is wound is mounted on an inner peripheral surface of the stator core; a lead wire which feeds power to the coil; and a wiring substrate which relays a connection between one end of the lead wire and the coil, wherein: a drawn-out hole is formed on the bracket at the position corresponding to the connection point of said one end of the lead wire and the wiring substrate such that the other end of the lead wire is drawn outward; and a harness guide is provided on a peripheral edge of the drawn-out hole such that the drawn lead wire is bent and fixed.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: October 19, 2010
    Assignee: Honda Motor Co., Ltd.
    Inventors: Masaki Ishizeki, Hisashi Ishida, Susumu Miyazaki, Kazushi Hamaya
  • Patent number: 7781928
    Abstract: A brushless motor according to the present invention is provided with: a tubular stator case; a stator core fitted into the stator case; and a rotor rotatably supported via a bearing inside the stator core, wherein: an inner flange portion which extends radially inward is formed at a peripheral edge of an opening of one end of the stator case; and a bracket is fixed to the inner flange portion while contacting therewith so as to close the opening.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: August 24, 2010
    Assignee: Honda Motor Co., Ltd.
    Inventors: Tohru Yumoto, Masaki Ishizeki, Hisashi Ishida, Susumu Miyazaki, Kazushi Hamaya, Yuichi Uebayashi
  • Patent number: 7732969
    Abstract: A brushless motor according to the present invention is provided with: a tubular stator case; a stator core; and a rotor. The stator core includes a tubular yoke portion and a plurality of split cores. A plurality of dovetail grooves are formed in an inner peripheral surface of the yoke portion; each split core has a coil bobbin which has a mounting hole so as to penetrate in a radial direction, and a split teeth which is mounted into the mounting hole of the coil bobbin. The coil bobbin has a winding portion, and flange portions, and a clearance portion into which a winding starting end of the coil is strayed from the winding portion is formed on the inside of the one of the flange portions by reducing the thickness of the flange portion such that.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: June 8, 2010
    Assignee: Honda Motor Co., Ltd.
    Inventors: Masaki Ishizeki, Tohru Yumoto, Hisashi Ishida, Susumu Miyazaki, Kazushi Hamaya
  • Publication number: 20090134724
    Abstract: A brushless motor is provided with: a tubular stator case; a stator core; a rotor rotatably supported via a bearing inside the stator core; a bracket which closes an opening at one end of the stator case; a coil bobbin around which a coil is wound is mounted on an inner peripheral surface of the stator core; a lead wire which feeds power to the coil; and a wiring substrate which relays a connection between one end of the lead wire and the coil, wherein: a drawn-out hole is formed on the bracket at the position corresponding to the connection point of said one end of the lead wire and the wiring substrate such that the other end of the lead wire is drawn outward; and a harness guide is provided on a peripheral edge of the drawn-out hole such that the drawn lead wire is bent and fixed.
    Type: Application
    Filed: November 4, 2008
    Publication date: May 28, 2009
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Masaki ISHIZEKI, Hisashi ISHIDA, Susumu MIYAZAKI, Kazushi HAMAYA
  • Publication number: 20090127953
    Abstract: A brushless motor according to the present invention is provided with: a tubular stator case; a stator core fitted into the stator case; and a rotor rotatably supported via a bearing inside the stator core, wherein: an inner flange portion which extends radially inward is formed at a peripheral edge of an opening of one end of the stator case; and a bracket is fixed to the inner flange portion while contacting therewith so as to close the opening.
    Type: Application
    Filed: November 4, 2008
    Publication date: May 21, 2009
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Tohru YUMOTO, Masaki ISHIZEKI, Hisashi ISHIDA, Susumu MIYAZAKI, Kazushi HAMAYA, Yuichi UEBAYASHI
  • Publication number: 20090127971
    Abstract: A brushless motor according to the present invention is provided with: a tubular stator case; a stator core; and a rotor. The stator core includes a tubular yoke portion and a plurality of split cores. A plurality of dovetail grooves are formed in an inner peripheral surface of the yoke portion; each split core has a coil bobbin which has a mounting hole so as to penetrate in a radial direction, and a split teeth which is mounted into the mounting hole of the coil bobbin. The coil bobbin has a winding portion, and flange portions, and a clearance portion into which a winding starting end of the coil is strayed from the winding portion is formed on the inside of the one of the flange portions by reducing the thickness of the flange portion such that.
    Type: Application
    Filed: November 4, 2008
    Publication date: May 21, 2009
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Masaki ISHIZEKI, Tohru Yumoto, Hisashi Ishida, Susumu Miyazaki, Kazushi Hamaya
  • Publication number: 20090127972
    Abstract: A brushless motor according to the present invention is provided with a tubular stator case, a stator core fitted into the stator case, and a rotor rotatably supported via a bearing inside the stator core. The stator core includes a tubular yoke portion and a plurality of split cores which are detachably mounted on the tubular yoke portion. A plurality of commutating-pole teeth which extend radially inward are integrally formed on an inner peripheral surface of the tubular yoke portion at regular intervals in the peripheral direction of the tubular yoke portion; and a root portion of each of the commutating-pole teeth has inclined shoulders which are gradually enlarged radially outward.
    Type: Application
    Filed: November 4, 2008
    Publication date: May 21, 2009
    Applicants: MITSUBA Corporation, HONDA MOTOR CO., LTD.
    Inventors: Hisashi ISHIDA, Tohru Yumoto, Masaki Ishizeki, Susumu Miyazaki, Kazushi Hamaya
  • Publication number: 20090121566
    Abstract: The brushless motor is provided with: a tubular stator case; a stator core; a rotor; a plurality of teeth which extend radially inward and are integrally formed on an inner peripheral surface of the stator core; a coil bobbin which is mounted between the mutually adjacent teeth; a lead wire which feed power to the coil; and a wiring substrate which relays a connection between the lead wire and the coil, wherein: the coil bobbin has flange portions which protrude outward from peripheral edges of the both ends of the coil bobbin; one of the flange portions of the coil bobbin has an enlarged member which protrudes outward from the surface of the flange portion; the enlarged member has a guide portion which holds the winding end of the coil; and the wiring substrate is connected the coil bobbin while contacting therewith in an axial direction of the stator core.
    Type: Application
    Filed: November 4, 2008
    Publication date: May 14, 2009
    Applicant: HONDA MOTOR CO, LTD.
    Inventors: Masaki ISHIZEKI, Hisashi Ishida, Susumu Miyazaki, Kazushi Hamaya