Patents by Inventor Michitaka Tsuchida
Michitaka Tsuchida 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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Publication number: 20130017916Abstract: A vehicle drive device includes an input member drivingly coupled to a drive output member of an internal combustion engine that rotates in a positive direction; an output member drivingly coupled to wheels; a rotating electrical machine; a distribution output member drivingly coupled to the output member; and a differential gear unit that distributes and transfers a torque, transferred to the input member, to the rotating electrical machine and the distribution output member. The distribution output member is placed coaxially with the input member and supported in a radial direction by a support bearing so as to be capable of rotating. Rotation of the input member in a negative direction is restricted by a one-way clutch. The one-way clutch is placed radially inward of the support bearing. At least a part of the one-way clutch is placed so as to overlap the support bearing as viewed in the radial direction.Type: ApplicationFiled: July 11, 2012Publication date: January 17, 2013Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.Inventors: Natsuki Sada, Hidetoshi Aoki, Michitaka Tsuchida
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Publication number: 20130008284Abstract: A hybrid drive system includes an input member, a rotating electric machine, a power distributing apparatus that distributes and transmits torque that is transmitted to the input member to the rotating electric machine and an output member, an output gear capable of outputting torque transmitted to the output member, and an output bearing that is rotatably supports the output member from the radially inner side. The entire apparatus is arranged overlapping with the output member at a position in an axial direction on the radially inner side of the output member, and a ring gear of the apparatus is integrally provided with the output member, on an inner peripheral surface of the output member. The output gear is integrally provided with the output member, on an outer peripheral surface of the output member. The output bearing and the output gear are arranged overlapping at a position in the axial direction.Type: ApplicationFiled: February 10, 2011Publication date: January 10, 2013Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.Inventors: Natsuki Sada, Tomoo Atarashi, Hirotaka Yata, Tomoaki Nishizuru, Michitaka Tsuchida
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Publication number: 20120329594Abstract: A hybrid drive system includes an input member, a rotating electric machine, a power distributing apparatus that distributes and transmits torque transmitted to the input member to the rotating electric machine and an output member, an output gear capable of outputting torque transmitted to the output member, an output bearing that rotatably supports the output member, and a rotor bearing that rotatably supports the rotor. The entire apparatus is arranged overlapping with the output member at a position in an axial direction on a radially inner side of the output member, and a ring gear of the apparatus is integrally provided with the output member, on an inner peripheral surface of the output member. The output gear is integrally provided with the output member, on an outer peripheral surface of the output member. The output bearing and the rotor bearing are arranged overlapping at a position in the axial direction.Type: ApplicationFiled: February 10, 2011Publication date: December 27, 2012Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.Inventors: Natsuki Sada, Tomoo Atarashi, Hirotaka Yata, Tomoaki Nishizuru, Michitaka Tsuchida
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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: 8245803Abstract: A wheel assembly with an in-wheel motor, which transmits rotational output of an output shaft of a motor to a wheel via a counter gear, is provided with an oil pump that is driven by rotational output of the counter gear and an oil flow path that leads oil from the oil pump to the motor.Type: GrantFiled: August 10, 2007Date of Patent: August 21, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Satoshi Murata, Michitaka Tsuchida, Hiroaki Urano
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Patent number: 8195348Abstract: Front left and right wheel units are driven by an engine and a motor generator. Rear left and right wheel units are independently driven by in-wheel motor type motor generators. The motor generator and the motor generator are configured to have different rated outputs, respectively, and be subjected to different speed reduction ratios, respectively, between the motor generators and their respectively associated drive wheel units, and thus have characteristics, respectively, in efficiency with respect to torque and vehicular speed, that exhibit high efficiency in mutually different output ranges, respectively. When a mileage oriented mode is selected as a traveling mode, an ECU determines how a drive torque should be allocated between the motor generators, as based on the motors' required drive torque and vehicular speed and on each motor generator's characteristic in efficiency, to maximize the motor generators' total efficiency.Type: GrantFiled: May 18, 2007Date of Patent: June 5, 2012Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki KaishaInventors: Ryoji Mizutani, Michitaka Tsuchida, Yasuaki Tahara, Tomohiro Fukushima, Masafumi Sakuma
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Patent number: 8180541Abstract: In a braking/driving force control apparatus, a vehicle target braking/driving force and a vehicle target yaw moment through the control of braking/driving forces of wheels are calculated, and when the target braking/driving force and the target yaw moment cannot be achieved through the control of the braking/driving forces of the wheels, it is determined which one of the braking/driving force and the yaw moment should take priority on the basis of the target braking/driving force and the target yaw moment. When it is determined that the braking/driving force should take priority, the braking/driving forces of the wheels are controlled so as to attain the target braking/driving force as much as possible, and when it is determined that the yaw moment should take priority, the braking/driving forces of the wheels are controlled so as to attain the target yaw moment as much as possible.Type: GrantFiled: February 2, 2006Date of Patent: May 15, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yoshinori Maeda, Kazuya Okumura, Michitaka Tsuchida, Yoshio Uragami, Kensuke Yoshizue, Satoshi Ando, Koji Sugiyama
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Patent number: 8122987Abstract: A vehicle including a wheel assembly with an in-wheel motor that reduces the rate of output of the in-wheel motor using a reduction mechanism, which includes a counter gear mechanism and a planetary gear set, and drives a wheel and is structured such that the directionality of a helix angle of a helical gear of a counter gear mechanism in a left wheel is opposite the directionality of a helix angle of a helical gear of the counter gear mechanism in a right wheel, and the directionality of the helix angle of a helical gear of the planetary gear set in the left wheel is the same as the directionality of the helix angle of a helical gear of the planetary gear set in the right wheel.Type: GrantFiled: August 10, 2007Date of Patent: February 28, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Satoshi Murata, Michitaka Tsuchida
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Publication number: 20110319220Abstract: A differential device has a differential case that houses a gear group, and a ring gear that is disposed fitted to the differential case. The differential case and the ring gear are supported rotatably about a drive shaft. The ring gear is made up of a helical gear. The ring gear abuts the differential case in the axial direction of the drive shaft. The ring gear and the differential case are welded at an abutting portion of the ring gear and the differential case in the axial direction of the drive shaft.Type: ApplicationFiled: January 26, 2010Publication date: December 29, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroyuki Shioiri, Michitaka Tsuchida, Makoto Taniguchi, Yosuke Suzuki, Takahito Endo, Yoshitaka Murata, Tsuyoshi Ide
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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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Patent number: 7974761Abstract: According to the present invention, when a target braking/driving force and a vehicle target yaw moment required to a vehicle cannot be achieved through a control of a braking/driving forces of wheels, in a rectangular coordinate of the braking/driving force and the yaw moment, a polygon indicating the maximum range of the braking/driving force and the yaw moment attainable by the braking/driving forces of the wheels, and an ellipse that crosses each side of the polygon and has a major axis and a minor axis aligning with the coordinate axis of the rectangular coordinate are set, for example.Type: GrantFiled: February 24, 2006Date of Patent: July 5, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yoshinori Maeda, Kazuya Okumura, Michitaka Tsuchida, Yoshio Uragami, Kensuke Yoshizue, Satoshi Ando, Koji Sugiyama
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Patent number: 7958960Abstract: Right front wheel units (FL, FR) are driven independently by motor generators (MGL, MGR). A power control unit (1) is provided common to the motor generators (MGL, MGR) and integrally controls driving them. Each motor generator (MGL, MGR) and the power control unit (1) are selectively connected by switch circuits (SWL, SWR). The switch circuits (SWL, SWR) are switched by an ECU (3), as appropriate, in accordance with how the vehicle (100) is currently traveling (i.e., a driving force that the vehicle is required to output, and a direction in which the vehicle is traveling). In other words, the vehicle (100) can selectively implement traveling with the left and right front wheel units (FL, FR) both serving as driving wheel units, and traveling with only one of the left and right front wheel units (FL, FR) serving as a driving wheel unit, depending on how the vehicle is currently traveling.Type: GrantFiled: November 29, 2006Date of Patent: June 14, 2011Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki KaishaInventors: Ryoji Mizutani, Michitaka Tsuchida, Tomohiro Fukushima, Masafumi Sakuma
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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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Publication number: 20110113782Abstract: A power transmitting apparatus is provided with an electric motor shaft that is connected to a rotor of an electric motor, an input shaft arranged parallel to the electric motor shaft and transmits power to and from an internal combustion engine positioned on one side in the axial direction, an input shaft rotating member provided on an end portion of the input shaft that is on the side opposite the internal combustion engine side and transmitting at least one of the power from the input shaft or the power from the electric motor shaft to a drive shaft of a vehicle, and a pump driven by the power from the internal combustion engine and pumps lubrication oil, and the electric motor is arranged on the opposite side of the input shaft rotating member from the internal combustion engine in the axial direction. The input shaft rotating member is rotatably supported by the case via a bearing, and at least part of the pump is arranged radially inward of the bearing.Type: ApplicationFiled: August 5, 2009Publication date: May 19, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Michitaka Tsuchida, Hiroyuki Shioiri, Hideaki Komada, Makoto Taniguchi
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Patent number: 7909416Abstract: According to the present invention, when at least one of a target braking/driving force and a vehicle target yaw moment required to a vehicle cannot be achieved by a braking/driving forces of wheels, a target braking/driving force after a modification and a target yaw moment after a modification are calculated to be values attainable by the braking/driving forces of the wheels. When the magnitudes of the target braking/driving force after a modification and the target yaw moment after the modification exceed the corresponding limit value, these magnitudes are limited to the limit values. Alternatively, when the magnitudes of rates of change of the target braking/driving force after a modification and the target yaw moment after the modification exceed the corresponding limited rates of change, these magnitudes of the rates of change are limited to the limited rates of change.Type: GrantFiled: February 24, 2006Date of Patent: March 22, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yoshinori Maeda, Kazuya Okumura, Michitaka Tsuchida, Yoshio Uragami, Kensuke Yoshizue, Satoshi Ando, Koji Sugiyama
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Patent number: 7828095Abstract: A motor has a stator core, a coil, a rotor, and a motor case in which the stator core, the coil, and the rotor are housed. The motor is also provided with a fluid carrying member that is arranged around a coil end of the coil in the motor case and has an inlet hole that is communicated with a fluid supply source and a distribution hole that is communicated with a space inside the motor case.Type: GrantFiled: August 10, 2007Date of Patent: November 9, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Satoshi Murata, Michitaka Tsuchida, Hiroaki Urano
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Publication number: 20100174463Abstract: A vehicle target braking/driving force and a vehicle target yaw moment to be achieved by a control of braking/driving force of each wheel are-calculated. The target yaw moment is corrected, for example, so as to coincide with the product of the correction coefficient determined based upon, the weight of the whole vehicle, the longitudinal and lateral distribution ratios of wheel vertical loads, and vehicle turning direction, and the target yaw moment, whereby the target yaw moment is corrected in accordance with the weight of the whole vehicle, the position of center of gravity of the whole vehicle, and vehicle turning direction.Type: ApplicationFiled: May 29, 2006Publication date: July 8, 2010Applicant: Toyota Jidosha Kabushiki KaishaInventors: Yoshio Uragami, Yoshinori Maeda, Michitaka Tsuchida, Kensuke Yoshizue, Kazuya Okumura, Satoshi Ando, Koji Sugiyama
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Publication number: 20100163319Abstract: A vehicle including a wheel assembly with an in-wheel motor that reduces the rate of output of the in-wheel motor using a reduction mechanism, which includes a counter gear mechanism and a planetary gear set, and drives a wheel and is structured such that the directionality of a helix angle of a helical gear of a counter gear mechanism in a left wheel is opposite the directionality of a helix angle of a helical gear of the counter gear mechanism in a right wheel, and the directionality of the helix angle of a helical gear of the planetary gear set in the left wheel is the same as the directionality of the helix angle of a helical gear of the planetary gear set in the right wheel.Type: ApplicationFiled: August 10, 2007Publication date: July 1, 2010Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Satoshi Murata, Michitaka Tsuchida
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Publication number: 20100120569Abstract: A driving apparatus for a hybrid vehicle that includes an input shaft linked to an engine; a generator; a motor; a differential gear device including a first gear element linked to a rotary shaft of the generator, a second gear element linked to the input shaft, and a third gear element that transmits power to a drive shaft; and a counter gear that is linked to the third gear element of the differential gear device and drive-linked to the motor.Type: ApplicationFiled: July 14, 2008Publication date: May 13, 2010Applicants: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Hiroaki Sanji, Natsuki Sada, Tomoo Atarashi, Michitaka Tsuchida, Hideaki Komada
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Publication number: 20100004090Abstract: Right front wheel units (FL, FR) are driven independently by motor generators (MGL, MGR). A power control unit (1) is provided common to the motor generators (MGL, MGR) and integrally controls driving them. Each motor generator (MGL, MGR) and the power control unit (1) are selectively connected by switch circuits (SWL, SWR). The switch circuits (SWL, SWR) are switched by an ECU (3), as appropriate, in accordance with how the vehicle (100) is currently traveling (i.e., a driving force that the vehicle is required to output, and a direction in which the vehicle is traveling). In other words, the vehicle (100) can selectively implement traveling with the left and right front wheel units (FL, FR) both serving as driving wheel units, and traveling with only one of the left and right front wheel units (FL, FR) serving as a driving wheel unit, depending on how the vehicle is currently traveling.Type: ApplicationFiled: November 29, 2006Publication date: January 7, 2010Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHAInventors: Ryoji Mizutani, Michitaka Tsuchida, Tomohiro Fukushima, Masafumi Sakuma