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).
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Patent number: 11447004Abstract: 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: GrantFiled: June 19, 2020Date of Patent: September 20, 2022Assignee: AISIN CORPORATIONInventors: Takahiro Misu, Kohsuke Murata
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Patent number: 11207971Abstract: 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: GrantFiled: June 30, 2020Date of Patent: December 28, 2021Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Takahiro Misu, Satoru Tanaka
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Publication number: 20210001712Abstract: 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: ApplicationFiled: June 30, 2020Publication date: January 7, 2021Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Takahiro MISU, Satoru TANAKA
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Publication number: 20210001711Abstract: 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: ApplicationFiled: June 19, 2020Publication date: January 7, 2021Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Takahiro MISU, Kohsuke Murata
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Patent number: 10723224Abstract: 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: GrantFiled: August 17, 2018Date of Patent: July 28, 2020Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Takahiro Misu, Yuki Tojima
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Patent number: 10355556Abstract: 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: GrantFiled: March 22, 2017Date of Patent: July 16, 2019Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Yoshiyuki Komi, Takahiro Misu, Tomoyuki Toyama, Shota Hirose, Takeshi Tojo, Shinya Harada
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Publication number: 20190077255Abstract: 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: ApplicationFiled: August 17, 2018Publication date: March 14, 2019Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Takahiro MISU, Yuki Tojima
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Publication number: 20180251016Abstract: 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: ApplicationFiled: August 23, 2016Publication date: September 6, 2018Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Shinya HARADA, Takahiro MISU, Shota HIROSE, Takeshi TOJO, Tomoyuki TOYAMA, Yoshiyuki KOMI
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Patent number: 9776627Abstract: 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: GrantFiled: September 19, 2016Date of Patent: October 3, 2017Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Takeshi Tojo, Takahiro Misu, Shota Hirose, Shinya Harada, Tomoyuki Toyama, Yoshiyuki Komi
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Publication number: 20170279336Abstract: 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: ApplicationFiled: March 22, 2017Publication date: September 28, 2017Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Yoshiyuki KOMI, Takahiro MISU, Tomoyuki TOYAMA, Shota HIROSE, Takeshi TOJO, Shinya HARADA
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Publication number: 20170088121Abstract: 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: ApplicationFiled: September 19, 2016Publication date: March 30, 2017Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Takeshi TOJO, Takahiro MISU, Shota HIROSE, Shinya HARADA, Tomoyuki TOYAMA, Yoshiyuki KOMI
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Publication number: 20160236674Abstract: 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: ApplicationFiled: September 5, 2014Publication date: August 18, 2016Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Kyosuke MORI, Takahiro MISU, Takeshi TOJO, Yo SHISHIDO
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Patent number: 9341241Abstract: 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: GrantFiled: December 11, 2014Date of Patent: May 17, 2016Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Toshiyuki Morio, Yoshiyuki Onimaru, Kozo Nakagawa, Takahiro Misu, Kuniaki Kuwahara
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Patent number: 9150216Abstract: 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: GrantFiled: February 20, 2014Date of Patent: October 6, 2015Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Takeshi Tojo, Kyosuke Mori, Takahiro Misu, Yo Shishido
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Publication number: 20150211607Abstract: 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: ApplicationFiled: January 28, 2015Publication date: July 30, 2015Applicants: AISIN AI CO., LTD., AISIN SEIKI KABUSHIKI KAISHAInventors: Hidetaka NAKASHIMA, Daizo Ogino, Kyosuke Mori, Takahiro Misu
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Publication number: 20150167794Abstract: 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: ApplicationFiled: December 11, 2014Publication date: June 18, 2015Applicant: Aisin Seiki Kabushiki KaishaInventors: Toshiyuki MORIO, Yoshiyuki Onimaru, Kozo Nakagawa, Takahiro Misu, Kuniaki Kuwahara
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Patent number: 9045138Abstract: 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: GrantFiled: March 13, 2014Date of Patent: June 2, 2015Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Yo Shishido, Takeshi Tojo, Takahiro Misu
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Patent number: 8968150Abstract: 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: GrantFiled: March 9, 2010Date of Patent: March 3, 2015Assignee: Aisin Seiki Kabushiki KaishaInventors: Takahiro Misu, Tomohiro Saeki, Satoshi Nakagaito
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Publication number: 20140277886Abstract: 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: ApplicationFiled: March 13, 2014Publication date: September 18, 2014Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Yo SHISHIDO, Takeshi Tojo, Takahiro Misu
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Publication number: 20140243148Abstract: 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: ApplicationFiled: February 20, 2014Publication date: August 28, 2014Applicant: Aisin Seiki Kabushiki KaishaInventors: TAKESHI TOJO, KYOSUKE MORI, TAKAHIRO MISU, YO SHISHIDO