Patents by Inventor Takahiro Misu

Takahiro Misu 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: 11447004
    Abstract: An in-wheel motor vehicle drive device includes an electric motor driving a drive gear, and the drive gear provided with a gear portion configured to receive drive force of the drive gear and a first wall surface extending along a direction orthogonal to an extending direction of a rotation center axis of the gear portion, the first wall surface for forming a pump chamber. The in-wheel motor vehicle drive device further includes a hub configured to transmit the drive force to the wheel, and an oil pump driven by the electric motor. The oil pump includes an oil pump cover including a second wall surface facing the first wall surface of the pump chamber, and a pump rotator arranged at a space between the first wall surface of the driven gear and the second wall surface of the oil pump cover, the pump rotator integrally rotating with the driven gear.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: September 20, 2022
    Assignee: AISIN CORPORATION
    Inventors: Takahiro Misu, Kohsuke Murata
  • Patent number: 11207971
    Abstract: A vehicle drive device includes an electric motor disposed in a wheel, a planetary gear mechanism, and a hub. The electric motor is configured to generate a drive force which drives the wheel. The drive force of the electric motor is transmitted to the planetary gear mechanism. The hub transmits a drive force of the planetary gear mechanism to the wheel. The planetary gear mechanism includes a pinion gear having a first pinion and a second pinion coaxial with the first pinion and having a smaller diameter than the first pinion, a fixed ring gear which engages with the first pinion, and a drive ring gear which engages with the second pinion and transmits a drive force to the hub. The first pinion is disposed at a position away from an end portion of the stator core in a direction in which a rotation center axis of the wheel extends.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: December 28, 2021
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Takahiro Misu, Satoru Tanaka
  • Publication number: 20210001712
    Abstract: A vehicle drive device includes an electric motor disposed in a wheel, a planetary gear mechanism, and a hub. The electric motor is configured to generate a drive force which drives the wheel. The drive force of the electric motor is transmitted to the planetary gear mechanism. The hub transmits a drive force of the planetary gear mechanism to the wheel. The planetary gear mechanism includes a pinion gear having a first pinion and a second pinion coaxial with the first pinion and having a smaller diameter than the first pinion, a fixed ring gear which engages with the first pinion, and a drive ring gear which engages with the second pinion and transmits a drive force to the hub. The first pinion is disposed at a position away from an end portion of the stator core in a direction in which a rotation center axis of the wheel extends.
    Type: Application
    Filed: June 30, 2020
    Publication date: January 7, 2021
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Takahiro MISU, Satoru TANAKA
  • Publication number: 20210001711
    Abstract: An in-wheel motor vehicle drive device includes an electric motor driving a drive gear, and the drive gear provided with a gear portion configured to receive drive force of the drive gear and a first wall surface extending along a direction orthogonal to an extending direction of a rotation center axis of the gear portion, the first wall surface for forming a pump chamber. The in-wheel motor vehicle drive device further includes a hub configured to transmit the drive force to the wheel, and an oil pump driven by the electric motor. The oil pump includes an oil pump cover including a second wall surface facing the first wall surface of the pump chamber, and a pump rotator arranged at a space between the first wall surface of the driven gear and the second wall surface of the oil pump cover, the pump rotator integrally rotating with the driven gear.
    Type: Application
    Filed: June 19, 2020
    Publication date: January 7, 2021
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Takahiro MISU, Kohsuke Murata
  • Patent number: 10723224
    Abstract: An electric vehicle drive unit includes: first and second traveling motors that include first and second rotors, respectively; and a first planetary gear mechanism that includes first to third rotation element, The first rotation element is rotatably coupled to the first rotor. The second rotation element is rotatably coupled to the second rotor via a connection portion. The third rotation element is coupled to an output shaft coupled to a drive wheel side. Rotary axes in the first planetary gear mechanism, the first traveling motor and the second traveling motor are coaxially arranged. The electric vehicle drive unit further includes a clutch that disconnectably connects any two rotation elements among the first to third rotation elements to switch the two rotation elements to a directly coupled state at the time of connection.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: July 28, 2020
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Takahiro Misu, Yuki Tojima
  • Patent number: 10355556
    Abstract: A motor drive device includes a stator, a rotor, a first output shaft being provided in the rotor shaft and integrally rotating with a first drive gear, a second output shaft being provided in the first output shaft and integrally rotating with a second drive gear, a first one-way clutch being provided between an inner periphery of the rotor shaft and an outer periphery of the first output shaft, the first one-way clutch transmitting only a driving force that operates in a first direction, a second one-way clutch being provided between the inner periphery of the rotor shaft and an outer periphery of the second output shaft, the second one-way clutch transmitting only a driving force that operates in a second direction that is opposite to the first direction, and a decelerator.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: July 16, 2019
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yoshiyuki Komi, Takahiro Misu, Tomoyuki Toyama, Shota Hirose, Takeshi Tojo, Shinya Harada
  • Publication number: 20190077255
    Abstract: An electric vehicle drive unit includes: first and second traveling motors that include first and second rotors, respectively; and a first planetary gear mechanism that includes first to third rotation element, The first rotation element is rotatably coupled to the first rotor. The second rotation element is rotatably coupled to the second rotor via a connection portion. The third rotation element is coupled to an output shaft coupled to a drive wheel side. Rotary axes in the first planetary gear mechanism, the first traveling motor and the second traveling motor are coaxially arranged. The electric vehicle drive unit further includes a clutch that disconnectably connects any two rotation elements among the first to third rotation elements to switch the two rotation elements to a directly coupled state at the time of connection.
    Type: Application
    Filed: August 17, 2018
    Publication date: March 14, 2019
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Takahiro MISU, Yuki Tojima
  • Publication number: 20180251016
    Abstract: A hybrid vehicle drive device includes a first motor/generator, a second motor/generator, an input shaft to which an engine is rotatably connected, an output shaft which is rotatably connected to a drive wheel and the second motor/generator, a rotational member which is rotatably connected to the first motor/generator and the output shaft, and a first one-way clutch which connects the input shaft and the rotational member with each other when a rotation speed of the input shaft is faster than a rotation speed of the rotational member and disconnects the input shaft and the rotational member from each other when the rotation speed of the input shaft is slower than the rotation speed of the rotational member.
    Type: Application
    Filed: August 23, 2016
    Publication date: September 6, 2018
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Shinya HARADA, Takahiro MISU, Shota HIROSE, Takeshi TOJO, Tomoyuki TOYAMA, Yoshiyuki KOMI
  • Patent number: 9776627
    Abstract: A hybrid vehicle driving device includes: a first motor generator; a second motor generator; an input shaft; an output shaft; a rotating member rotatably linked to the output shaft; a connection member to which the first motor generator is connected; a connection mechanism which connects and disconnects the connection member and the rotating member; a one-way clutch connecting the input shaft and the connection member; a synchronization control portion synchronizing the rotational speed of the first motor generator with the rotational speed of the rotating member; a first engine control portion maintaining the rotational speed of an engine; a connection portion connecting the connection member and the rotating member to each other; and a second engine control portion controlling the engine such that the rotational speed of the input shaft is synchronized with the rotational speed of the connection member.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: October 3, 2017
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Takeshi Tojo, Takahiro Misu, Shota Hirose, Shinya Harada, Tomoyuki Toyama, Yoshiyuki Komi
  • Publication number: 20170279336
    Abstract: A motor drive device includes a stator, a rotor, a first output shaft being provided in the rotor shaft and integrally rotating with a first drive gear, a second output shaft being provided in the first output shaft and integrally rotating with a second drive gear, a first one-way clutch being provided between an inner periphery of the rotor shaft and an outer periphery of the first output shaft, the first one-way clutch transmitting only a driving force that operates in a first direction, a second one-way clutch being provided between the inner periphery of the rotor shaft and an outer periphery of the second output shaft, the second one-way clutch transmitting only a driving force that operates in a second direction that is opposite to the first direction, and a decelerator.
    Type: Application
    Filed: March 22, 2017
    Publication date: September 28, 2017
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yoshiyuki KOMI, Takahiro MISU, Tomoyuki TOYAMA, Shota HIROSE, Takeshi TOJO, Shinya HARADA
  • Publication number: 20170088121
    Abstract: A hybrid vehicle driving device includes: a first motor generator; a second motor generator; an input shaft; an output shaft; a rotating member rotatably linked to the output shaft; a connection member to which the first motor generator is connected; a connection mechanism which connects and disconnects the connection member and the rotating member; a one-way clutch connecting the input shaft and the connection member; a synchronization control portion synchronizing the rotational speed of the first motor generator with the rotational speed of the rotating member; a first engine control portion maintaining the rotational speed of an engine; a connection portion connecting the connection member and the rotating member to each other; and a second engine control portion controlling the engine such that the rotational speed of the input shaft is synchronized with the rotational speed of the connection member.
    Type: Application
    Filed: September 19, 2016
    Publication date: March 30, 2017
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Takeshi TOJO, Takahiro MISU, Shota HIROSE, Shinya HARADA, Tomoyuki TOYAMA, Yoshiyuki KOMI
  • Publication number: 20160236674
    Abstract: A control device includes a gear shift information acquisition portion acquiring gear stage information selected in a current running state by a multi-stage automatic transmission, a required information acquisition portion acquiring required information that shows a required drive force required by the vehicle, an actual drive three acquisition portion acquiring an actual drive force that is provided by a combination of an actual engine drive force actually generated by a drive of an internal combustion engine in the current running state and an actual motor drive force actually generated by a drive of a motor in the current running state, and a control portion selecting and shifting the gear stage of the multi-stage automatic transmission in response to the required drive force.
    Type: Application
    Filed: September 5, 2014
    Publication date: August 18, 2016
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Kyosuke MORI, Takahiro MISU, Takeshi TOJO, Yo SHISHIDO
  • Patent number: 9341241
    Abstract: A drive apparatus for a hybrid vehicle includes: an engine applying a drive force to drive wheels via a drive shaft; a motor applying a drive force to the drive wheels via a rotation shaft; a planetary gear mechanism having first, second, and third elements lining up sequentially with a gap interposed therebetween corresponding to a gear ratio; and an automatic transmission having input and output shafts rotatably connected to the drive wheels, and changing a gear ratio obtained by the division of the rotation speed of the input shaft by the rotation speed of the output shaft, wherein the input and drive shafts are connected to the second element, the output shaft and one end of the rotation shaft are connected to the first element, and the output shaft and the other end of the rotation shaft are connected to the third element.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: May 17, 2016
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Toshiyuki Morio, Yoshiyuki Onimaru, Kozo Nakagawa, Takahiro Misu, Kuniaki Kuwahara
  • Patent number: 9150216
    Abstract: A drive force control system includes an engine for controlling an output in accordance with an operation of an accelerator of a vehicle, a drive motor assisting a torque of the engine, an operation state detection portion detecting an operation state of the accelerator, and a control portion performing an advancing compensation control by the drive motor together with a drive control of the engine on the basis of an amount of change of the operation state of the accelerator generated within a predetermined time to provide greater acceleration than a case where the operation state of the accelerator is maintained.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: October 6, 2015
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Takeshi Tojo, Kyosuke Mori, Takahiro Misu, Yo Shishido
  • Publication number: 20150211607
    Abstract: A transmission for hybrid vehicle includes a change-speed gear assembly, an engine-side connector, and a motor-side connector. The change-speed gear assembly includes drive gears and driven gears making change-speed stages. A specific drive gear of the drive gears, and a specific driven gear of the driven gears, making a specific change-speed stage (e.g., the fifth-speed change-speed stage) of the change-speed stages, are made switchable between the idling state and the rotary connection state. The engine-side connector switches the other drive gears and driven gears, making the other change-speed stages, between the idling state and the rotary connection state, respectively. The motor-side connector includes a motor-side drive gear meshing with a motor-side driven gear doubled as the specific drive gear. The motor-side connector switches the specific drive gear, and the specific driven gear between the idling state and the rotary connection state, respectively.
    Type: Application
    Filed: January 28, 2015
    Publication date: July 30, 2015
    Applicants: AISIN AI CO., LTD., AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Hidetaka NAKASHIMA, Daizo Ogino, Kyosuke Mori, Takahiro Misu
  • Publication number: 20150167794
    Abstract: A drive apparatus for a hybrid vehicle includes: an engine applying a drive force to drive wheels via a drive shaft; a motor applying a drive force to the drive wheels via a rotation shaft; a planetary gear mechanism having first, second, and third elements lining up sequentially with a gap interposed therebetween corresponding to a gear ratio; and an automatic transmission having input and output shafts rotatably connected to the drive wheels, and changing a gear ratio obtained by the division of the rotation speed of the input shaft by the rotation speed of the output shaft, wherein the input and drive shafts are connected to the second element, the output shaft and one end of the rotation shaft are connected to the first element, and the output shaft and the other end of the rotation shaft are connected to the third element.
    Type: Application
    Filed: December 11, 2014
    Publication date: June 18, 2015
    Applicant: Aisin Seiki Kabushiki Kaisha
    Inventors: Toshiyuki MORIO, Yoshiyuki Onimaru, Kozo Nakagawa, Takahiro Misu, Kuniaki Kuwahara
  • Patent number: 9045138
    Abstract: A vehicle control apparatus includes a determination portion determining whether a vehicle is running by using a motor without using an engine or the vehicle is running by using both of the engine and the motor, a detection portion detecting a start-up request of the engine, a drive power calculation portion calculating a requested drive power in a case where it is detected that the vehicle is running by using the motor without using the engine and the start-up request is detected, and an engine start-up control portion driving a drive shaft by outputting the drive power by means of the motor at a start-up of the engine, the engine start-up control portion causing the vehicle to run by using both of the engine and the motor after the output of the drive power is completed.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: June 2, 2015
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yo Shishido, Takeshi Tojo, Takahiro Misu
  • Patent number: 8968150
    Abstract: A damper device includes a damper unit arranged on a motive power transmission path between a motive power source and a gear mechanism and configured for absorbing torque fluctuations that might be generated by elastic force between the motive power source and the gear mechanism. The damper device also includes a limiter unit that produces slip when the torque fluctuations have exceeded a preset value. The limiter unit is arranged on a motive power transmission path between the damper unit and the gear mechanism.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: March 3, 2015
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Takahiro Misu, Tomohiro Saeki, Satoshi Nakagaito
  • Publication number: 20140277886
    Abstract: A vehicle control apparatus includes a determination portion determining whether a vehicle is running by using a motor without using an engine or the vehicle is running by using both of the engine and the motor, a detection portion detecting a start-up request of the engine, a drive power calculation portion calculating a requested drive power in a case where it is detected that the vehicle is running by using the motor without using the engine and the start-up request is detected, and an engine start-up control portion driving a drive shaft by outputting the drive power by means of the motor at a start-up of the engine, the engine start-up control portion causing the vehicle to run by using both of the engine and the motor after the output of the drive power is completed.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yo SHISHIDO, Takeshi Tojo, Takahiro Misu
  • Publication number: 20140243148
    Abstract: A drive force control system includes an engine for controlling an output in accordance with an operation of an accelerator of a vehicle, a drive motor assisting a torque of the engine, an operation state detection portion detecting an operation state of the accelerator, and a control portion performing an advancing compensation control by the drive motor together with a drive control of the engine on the basis of an amount of change of the operation state of the accelerator generated within a predetermined time to provide greater acceleration than a case where the operation state of the accelerator is maintained.
    Type: Application
    Filed: February 20, 2014
    Publication date: August 28, 2014
    Applicant: Aisin Seiki Kabushiki Kaisha
    Inventors: TAKESHI TOJO, KYOSUKE MORI, TAKAHIRO MISU, YO SHISHIDO