Patents by Inventor Yuki Tojima
Yuki Tojima 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: 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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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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Patent number: 9221495Abstract: Motor-generators are incorporated in front wheels and drive the front wheels, respectively. An ECU determines whether or not a steering apparatus including a steering actuator, a tie rod and a steering angle sensor has failed, based on an operation angle of a steering wheel from a steering wheel angle sensor and a steering angle of the front wheels from the steering angle sensor. When the ECU determines that the steering apparatus has failed, the ECU provides torque difference for a torque instruction for the motor-generators in accordance with the operation angle of the steering wheel.Type: GrantFiled: December 12, 2006Date of Patent: December 29, 2015Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHAInventors: Ryoji Mizutani, Michitaka Tsuchida, Yasuaki Tahara, Yuki Tojima, Shigetaka Isogai
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Patent number: 8590649Abstract: An in-wheel motor unit is suspended from a vehicle body and outputs torque from an internal motor to a wheel; and has a knuckle, which is suspended from the aforementioned vehicle body; an output shaft, which outputs motor torque to the wheel; a wheel hub, which rotates together with the wheel and is connected to the output shaft such that the output shaft and the wheel hub can rotate together; and a unit casing for the in-wheel motor unit, which houses the motor. The wheel hub is rotatably supported by a first part of the knuckle via a hub bearing, and the unit casing is fixed to a second part of the knuckle via a sleeve.Type: GrantFiled: March 23, 2010Date of Patent: November 26, 2013Assignee: Aisin Seiki Kabushiki KaishaInventors: Masami Osawa, Yuki Tojima
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Patent number: 8251167Abstract: A cooling structure for an in-wheel motor includes an in-wheel motor mounted within a wheel of a vehicle to drive the wheel or to be driven by the wheel, and an oil channel and a fin serving as “heat radiating portions” to facilitate cooling of the in-wheel motor. The in-wheel motor has a case serving as a “housing”. The “heat radiating portion” is located apart from the case.Type: GrantFiled: April 12, 2006Date of Patent: August 28, 2012Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki KaishaInventors: Naoki Moriguchi, Michitaka Tsuchida, Ryoji Mizutani, Junichiro Sakurai, Yuki Tojima
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Patent number: 8157036Abstract: A breather device provided on the outer peripheral section of a case of an in-wheel motor is located at a position above the rotation shaft of the in-wheel motor, between the in-wheel motor and a wheel. The position is inside the wheel in the width direction of a vehicle.Type: GrantFiled: July 31, 2008Date of Patent: April 17, 2012Assignees: Aisin Seiki Kabushiki Kaisha, Toyota Jidosha Kabushiki KaishaInventors: Shigekazu Yogo, Ryoji Mizutani, Yuki Tojima, Shuuetsu Suzuki
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Power output apparatus, vehicle mounting the same, and method for controlling power output apparatus
Patent number: 8042634Abstract: The rotating shaft of the motor is connected to and disconnected from the first coupled rotating shaft, the crankshaft of the engine, and the drive shaft is connected to and disconnected from the second coupled rotating shaft and the third coupled rotating shaft. Thereby, the connection state when a power is output to the drive shaft can be increased and the power to the drive shaft can be output in a more efficient connection state in comparison with only connecting and disconnecting the rotating shaft of the motor to and from the first coupled rotating shaft and the crankshaft of the engine.Type: GrantFiled: June 21, 2007Date of Patent: October 25, 2011Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki KaishaInventors: Kazunobu Eritate, Tomokazu Yamauchi, Shoichi Sasaki, Yuki Tojima, Takahiro Misu, Masami Osawa -
Patent number: 8020653Abstract: An in-wheel motor includes a rotating electric machine provided at a wheel and applying driving force to the wheel, a housing housing the rotating electric machine and rotatably supporting the wheel, and a vibration damping member provided between the housing and a ball joint as a mounting portion for mounting the housing on a vehicle body.Type: GrantFiled: January 19, 2007Date of Patent: September 20, 2011Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki KaishaInventors: Ryoji Mizutani, Michitaka Tsuchida, Yasuaki Tahara, Atsushi Torii, Yuki Tojima
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Publication number: 20110174560Abstract: An in-wheel motor unit is suspended from a vehicle body and outputs torque from an internal motor to a wheel; and has a knuckle, which is suspended from the aforementioned vehicle body; an output shaft, which outputs motor torque to the wheel; a wheel hub, which rotates together with the wheel and is connected to the output shaft such that the output shaft and the wheel hub can rotate together; and a unit casing for the in-wheel motor unit, which houses the motor. The wheel hub is rotatably supported by a first part of the knuckle via a hub bearing, and the unit casing is fixed to a second part of the knuckle via a sleeve.Type: ApplicationFiled: March 23, 2010Publication date: July 21, 2011Inventors: Masami Osawa, Yuki Tojima
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Patent number: 7958959Abstract: A breather device provided on the outer peripheral section of a case of an in-wheel motor is located at a position above the rotation shaft of the in-wheel motor, between the in-wheel motor and a wheel. The position is inside the wheel in the width direction of a vehicle.Type: GrantFiled: May 16, 2005Date of Patent: June 14, 2011Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki KaishaInventors: Shigekazu Yogo, Ryoji Mizutani, Yuki Tojima, Shuuetsu Suzuki
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Patent number: 7950484Abstract: An electrically driven wheel includes a wheel disc and a wheel hub; an in-wheel motor mounted within the wheel disc to drive the wheel disc and the wheel hub or to be driven by the wheel disc and the wheel hub; a brake rotor and a brake caliper suppressing rotation of the wheel disc and the wheel hub while a vehicle is moving; and a parking lock mechanism provided in the in-wheel motor separately from a brake mechanism formed of the brake rotor and the brake caliper. The parking lock mechanism is a band-type brake frictionally engaging a planetary carrier serving as an “output portion” of a “reduction mechanism”.Type: GrantFiled: April 12, 2006Date of Patent: May 31, 2011Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki KaishaInventors: Naoki Moriguchi, Michitaka Tsuchida, Ryoji Mizutani, Junichiro Sakurai, Yuki Tojima
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Patent number: 7819214Abstract: An in-wheel motor includes a motor, a shaft, an oil pump and oil paths. The oil pump is provided on one end of the shaft. The motor includes a stator core, stator coils and a rotor. The oil pump pumps up an oil from an oil reservoir via an oil path to supply the pumped-up oil to another oil path. The another oil path supplies the oil from the oil pump to the outer periphery of the stator core of the motor from an opening end.Type: GrantFiled: May 2, 2007Date of Patent: October 26, 2010Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki KaishaInventors: Ryoji Mizutani, Yasuji Taketsuna, Yuki Tojima, Atsushi Torii, Shigetaka Isogai
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Patent number: 7703780Abstract: A wheel supporting apparatus includes dampers, ball joints, a knuckle, an upper arm and a lower arm. The dampers are attached to a case of an in-wheel motor in the top-bottom direction of the vehicle's body and are connected respectively to the ball joints. The upper arm and the lower arm have respective one-ends connected to respective dampers via the ball joints and respective other ends pivotably fixed to the vehicle's body. The knuckle is connected to the ball joints to rotatably support a wheel hub via hub bearings.Type: GrantFiled: September 24, 2004Date of Patent: April 27, 2010Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki KaishaInventors: Ryoji Mizutani, Yuki Tojima, Shigetaka Isogai, Atsushi Torii, Junichiro Sakurai
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Patent number: 7641010Abstract: An in-wheel motor includes a motor generating motive power, a planetary gear arranged toward a wheel disc relative to the motor to reduce an output of the motor, and a shaft arranged toward the wheel disc relative to the planetary gear and connected to a planetary carrier. Shaft is connected to a constant velocity joint transmitting the motive power to wheel disc.Type: GrantFiled: December 16, 2005Date of Patent: January 5, 2010Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki KaishaInventors: Ryoji Mizutani, Fumito Kurata, Shigekazu Yogo, Kenji Harada, Atsushi Torii, Yuki Tojima, Masafumi Sakuma
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POWER OUTPUT APPARATUS, VEHICLE MOUNTING THE SAME, AND METHOD FOR CONTROLLING POWER OUTPUT APPARATUS
Publication number: 20090242287Abstract: The rotating shaft of the motor is connected to and disconnected from the first coupled rotating shaft, the crankshaft of the engine, and the drive shaft is connected to and disconnected from the second coupled rotating shaft and the third coupled rotating shaft. Thereby, the connection state when a power is output to the drive shaft can be increased and the power to the drive shaft can be output in a more efficient connection state in comparison with only connecting and disconnecting the rotating shaft of the motor to and from the first coupled rotating shaft and the crankshaft of the engine.Type: ApplicationFiled: June 21, 2007Publication date: October 1, 2009Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHAInventors: Kazunobu Eritate, Tomokazu Yamauchi, Shoichi Sasaki, Yuki Tojima, Takahiro Misu, Masami Osawa -
Publication number: 20090166111Abstract: An in-wheel motor includes a rotating electric machine (110) provided at a wheel and applying driving force to the wheel, a housing (134) housing the rotating electric machine and rotatably supporting the wheel, and a vibration damping member (124, 126) provided between the housing (134) and a ball joint (106, 108) as a mounting portion for mounting the housing on a vehicle body.Type: ApplicationFiled: January 19, 2007Publication date: July 2, 2009Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHAInventors: Ryoji Mizutani, Michitaka Tsuchida, Yasuaki Tahara, Atsushi Torii, Yuki Tojima
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Publication number: 20090093931Abstract: Motor-generators are incorporated in front wheels and drive the front wheels, respectively. An ECU determines whether or not a steering apparatus including a steering actuator, a tie rod and a steering angle sensor has failed, based on an operation angle of a steering wheel from a steering wheel angle sensor and a steering angle of the front wheels from the steering angle sensor. When the ECU determines that the steering apparatus has failed, the ECU provides torque difference for a torque instruction for the motor-generators in accordance with the operation angle of the steering wheel.Type: ApplicationFiled: December 12, 2006Publication date: April 9, 2009Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHAInventors: Ryoji Mizutani, Michitaka Tsuchida, Yasuaki Tahara, Yuki Tojima, Shigetaka Isogai
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Publication number: 20090038865Abstract: A cooling structure for an in-wheel motor includes an in-wheel motor mounted within a wheel of a vehicle to drive the wheel or to be driven by the wheel, and an oil channel and a fin serving as “heat radiating portions” to facilitate cooling of the in-wheel motor. The in-wheel motor has a case serving as a “housing”. The “heat radiating portion” is located apart from the case.Type: ApplicationFiled: April 12, 2006Publication date: February 12, 2009Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHAInventors: Naoki Moriguchi, Michitaka Tsuchida, Ryoji Mizutani, Junichiro Sakurai, Yuki Tojima
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Publication number: 20090025991Abstract: An electrically driven wheel includes a wheel disc and a wheel hub; an in-wheel motor mounted within the wheel disc to drive the wheel disc and the wheel hub or to be driven by the wheel disc and the wheel hub; a brake rotor and a brake caliper suppressing rotation of the wheel disc and the wheel hub while a vehicle is moving; and a parking lock mechanism provided in the in-wheel motor separately from a brake mechanism formed of the brake rotor and the brake caliper. The parking lock mechanism is a band-type brake frictionally engaging a planetary carrier serving as an “output portion” of a “reduction mechanism”.Type: ApplicationFiled: April 12, 2006Publication date: January 29, 2009Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHAInventors: Naoki Moriguchi, Michitaka Tsuchida, Ryoji Mizutani, Junichiro Sakurai, Yuki Tojima
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Publication number: 20080289891Abstract: A breather device provided on the outer peripheral section of a case of an in-wheel motor is located at a position above the rotation shaft of the in-wheel motor, between the in-wheel motor and a wheel. The position is inside the wheel in the width direction of a vehicle.Type: ApplicationFiled: July 31, 2008Publication date: November 27, 2008Applicants: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki KaishaInventors: Shigekazu Yogo, Ryoji Mizutani, Yuki Tojima, Shuuetsu Suzuki