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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Patent number: 11634022Abstract: A power transmission unit in which an oil pump is arranged without extending a shaft length. In the power transmission unit, an input shaft, a first rotary machine, a differential mechanism, and an output shaft are arranged coaxially. The power transmission unit comprise: a first clutch that engages a first movable member connected to an input element of the differential mechanism with a first engagement section formed on another rotary element; a second clutch that engages a second movable member connected to the output element of the differential mechanism with a second engagement section formed on another rotary element; a drive gear mounted on the input element; a driven gear meshed with the drive gear; and an oil pump connected to the driven gear.Type: GrantFiled: July 19, 2022Date of Patent: April 25, 2023Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tatsuya Imamura, Taku Harada, Michitaka Tsuchida, Hiroyuki Shioiri, Takahito Endo
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Publication number: 20230054408Abstract: A power transmission unit in which an oil pump is arranged without extending a shaft length. In the power transmission unit, an input shaft, a first rotary machine, a differential mechanism, and an output shaft are arranged coaxially. The power transmission unit comprise: a first clutch that engages a first movable member connected to an input element of the differential mechanism with a first engagement section formed on another rotary element; a second clutch that engages a second movable member connected to the output element of the differential mechanism with a second engagement section formed on another rotary element; a drive gear mounted on the input element; a driven gear meshed with the drive gear; and an oil pump connected to the driven gear.Type: ApplicationFiled: July 19, 2022Publication date: February 23, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tatsuya IMAMURA, Taku HARADA, Michitaka TSUCHIDA, Hiroyuki SHIOIRI, Takahito ENDO
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Publication number: 20230027461Abstract: A driving force control system for a hybrid vehicle for reducing a required time to launch the hybrid vehicle after selecting a reverse range while maintaining a driving force. The control system is configured to change an engine start threshold to restrict a startup of the engine upon satisfaction of a restricting condition, in which a low mode is established by a transmission mechanism, and a reverse drive range is selected.Type: ApplicationFiled: May 27, 2022Publication date: January 26, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Taku HARADA, Michitaka TSUCHIDA, Tatsuya IMAMURA
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Patent number: 10502261Abstract: A concave portion provided in at least one of the first assembled surface, and other assembled surfaces for fastening the driving force source, in the region corresponding to the outer race of the tapered roller bearing, the other assembled surfaces provided to one of the fixed component and the driving force source.Type: GrantFiled: October 2, 2017Date of Patent: December 10, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Koichi Kato, Shinichi Baba, Shinichiro Suenaga, Iori Matsuda, Michitaka Tsuchida, Akiko Nishimine
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Patent number: 10487888Abstract: Since one end of a spring is received by a planar portion of a spring seat provided on any one of an outer plate and an inner plate, it is possible to support the spring with a planar member without machining a bottom wall face of the outer plate into a planar shape. Since the spring seat has seat guide portions that contact the outer plate, it is possible to suppress the fluctuation of the spring seat and the fluctuation of the spring by the seat guide portions, so it is possible to reliably prevent interference of the spring with its peripheral portion. Therefore, a load on the spring is reduced, so it is possible to improve the durability of a one-way clutch.Type: GrantFiled: November 29, 2016Date of Patent: November 26, 2019Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, NSK-WARNER K.K.Inventors: Michinobu Suzuki, Yuji Iwase, Shotaro Kato, Michitaka Tsuchida, Yota Mizuno, Koichi Kato, Takaya Yamada, Hiroyuki Ohishi, Tomoyuki Miyazaki
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Publication number: 20180065617Abstract: A control device for a hybrid vehicle includes a rotation detector and electronic control unit. The rotation detector is configured to detect a rotational state of the third rotational element of the hybrid vehicle. The electronic control unit is configured to control a first motor generator of the hybrid vehicle such that output torque of the first motor generator becomes zero when the electronic control unit determines, based on the rotational state of the third rotational element, that the third rotational element has a rotational fluctuation while the hybrid vehicle is travelling in a dual drive motor travelling mode. The dual drive motor travelling mode is a mode in which the hybrid vehicle travels while both the first motor generator and a second motor generator serve as driving force sources for travelling in a state where a first rotational element is fixed by a lock mechanism.Type: ApplicationFiled: September 6, 2017Publication date: March 8, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Michitaka TSUCHIDA, Michinobu SUZUKI, Yosuke SUZUKI, Shinichi BABA, Koichi KATO, Shinichiro SUENAGA
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Publication number: 20170159727Abstract: Since one end of a spring is received by a planar portion of a spring seat provided on any one of an outer plate and an inner plate, it is possible to support the spring with a planar member without machining a bottom wall face of the outer plate into a planar shape. Since the spring seat has seat guide portions that contact the outer plate, it is possible to suppress the fluctuation of the spring seat and the fluctuation of the spring by the seat guide portions, so it is possible to reliably prevent interference of the spring with its peripheral portion. Therefore, a load on the spring is reduced, so it is possible to improve the durability of a one-way clutch.Type: ApplicationFiled: November 29, 2016Publication date: June 8, 2017Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, NSK-WARNER K.K.Inventors: Michinobu SUZUKI, Yuji IWASE, Shotaro KATO, Michitaka TSUCHIDA, Yota MIZUNO, Koichi KATO, Takaya YAMADA, Hiroyuki OHISHI, Tomoyuki MIYAZAKI
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Patent number: 9505444Abstract: A vehicle front structure includes: a power unit provided on a front part of a vehicle; a front side member which is arranged outside the power unit in a vehicle width direction and which extends in a vehicle longitudinal direction; and a load receiving portion which is provided on a side portion on a front side member side of the power unit and which is located inside the front side member in a vehicle width direction while stiffness thereof in the vehicle width direction is higher than other location of the side portion.Type: GrantFiled: September 2, 2014Date of Patent: November 29, 2016Assignee: Toyota Jidosha Kabushiki KaishaInventors: Michitaka Tsuchida, Shunsuke Hayashi, Tatsuo Obata, Kazuaki Ishiura, Takeshi Kuwahara
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Patent number: 9441684Abstract: A parking pawl achieves a parking locked state by engaging with a parking gear. A parking rod is configured to move along the axial direction of the parking rod. The parking rod passes through a cam member. The cam member is configured to move from a first position to a second position in accordance with movement of the parking rod. The cam member includes a tapered portion that presses the parking pawl such that the parking pawl is engaged with the parking gear when the cam member moves from the first position to the second position. The parking rod includes a protruding portion that protrudes from the cam member. A guide member is configured to guide the cam member, and is configured to support the protruding portion and the tapered portion when the cam member is at the first position.Type: GrantFiled: February 2, 2015Date of Patent: September 13, 2016Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kazuaki Ishiura, Michitaka Tsuchida, Tatsuo Obata
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Publication number: 20160146332Abstract: A driving system includes a first oil receiver and a power split mechanism. The power split mechanism includes an input shaft and a hollow shaft portion. The input shaft has a lubricating oil passage and a first oil hole. The first oil hole communicates the lubricating oil passage with an outer face of the input shaft. The hollow shaft portion is fitted to a radially outer side of the input shaft so as to be relatively rotatable, and has a through portion extending through from an inner face to an outer face of the hollow shaft portion. The first oil receiver is arranged on an outer side of the through portion in a radial direction of the hollow shaft portion, and configured to trap oil spattered outward from the through portion in the radial direction of the hollow shaft portion and guide trapped oil to the pinion gears.Type: ApplicationFiled: November 20, 2015Publication date: May 26, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Makoto TANIGUCHI, Michitaka TSUCHIDA, Mitsuki WATANABE, Masashi SAKAGUCHI
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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: 9132832Abstract: A vehicle power transmission device is disposed on a hybrid vehicle having an engine and an electric motor, the vehicle power transmission device includes a first member having one of outer circumferential teeth disposed around one axial center or inner circumferential teeth meshing with the outer circumferential teeth and a second member having the other teeth, the inner circumferential teeth and the outer circumferential teeth meshes with each other to limit relative rotation around the one axial center between the first member and the second member, the relative rotation between the first member and the second member is limited to transmit torque of the electric motor to drive wheels.Type: GrantFiled: November 8, 2011Date of Patent: September 15, 2015Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Akitaka Ichikawa, Yoshimitsu Yokouchi, Masahiro Kojima, Ryuji Ibaraki, Michitaka Tsuchida, Shinichiro Suenaga, Hiromichi Kimura
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Publication number: 20150226277Abstract: A parking pawl achieves a parking locked state by engaging with a parking gear. A parking rod is configured to move along the axial direction of the parking rod. The parking rod passes through a cam member. The cam member is configured to move from a first position to a second position in accordance with movement of the parking rod. The cam member includes a tapered portion that presses the parking pawl such that the parking pawl is engaged with the parking gear when the cam member moves from the first position to the second position. The parking rod includes a protruding portion that protrudes from the cam member. A guide member is configured to guide the cam member, and is configured to support the protruding portion and the tapered portion when the cam member is at the first position.Type: ApplicationFiled: February 2, 2015Publication date: August 13, 2015Inventors: Kazuaki Ishiura, Michitaka Tsuchida, Tatsuo Obata
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Patent number: 9102319Abstract: A vehicle power transmission device is disposed on a hybrid vehicle having an engine and an electric motor, the vehicle power transmission device includes a first member having one of outer circumferential teeth disposed around one axial center or inner circumferential teeth meshing with the outer circumferential teeth and a second member having the other teeth, the inner circumferential teeth and the outer circumferential teeth meshes with each other to limit relative rotation around the one axial center between the first member and the second member, the relative rotation between the first member and the second member is limited to transmit torque of the electric motor to drive wheels.Type: GrantFiled: November 8, 2011Date of Patent: August 11, 2015Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Akitaka Ichikawa, Yoshimitsu Yokouchi, Masahiro Kojima, Ryuji Ibaraki, Michitaka Tsuchida, Shinichiro Suenaga, Hiromichi Kimura
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Publication number: 20150060179Abstract: A vehicle front structure includes: a power unit provided on a front part of a vehicle; a front side member which is arranged outside the power unit in a vehicle width direction and which extends in a vehicle longitudinal direction; and a load receiving portion which is provided on a side portion on a front side member side of the power unit and which is located inside the front side member in a vehicle width direction while stiffness thereof in the vehicle width direction is higher than other location of the side portion.Type: ApplicationFiled: September 2, 2014Publication date: March 5, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Michitaka Tsuchida, Shunsuke Hayashi, Tatsuo Obata, Kazuaki Ishiura, Takeshi Kuwahara
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Patent number: 8905881Abstract: 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: GrantFiled: February 10, 2011Date of Patent: December 9, 2014Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Natsuki Sada, Tomoo Atarashi, Hirotaka Yata, Tomoaki Nishizuru, Michitaka Tsuchida
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Patent number: 8905885Abstract: A vehicle drive device configured with reduced axial dimensions, while still having appropriate lubrication. The vehicle drive device is configured with an input shaft coupled to an engine, a rotary electric machine, and an output shaft coupled to wheels. A power transfer mechanism couples input shaft, the rotary electric machine, and the output shaft. A case houses at least the rotary electric machine and the power transfer mechanism. An oil reserving portion capable of reserving oil supplied by rotation of the power transfer mechanism is provided above the rotor shaft inside the case. A communication oil passage is oriented between the oil reserving portion and an inner circumferential space formed inside the rotor shaft. The rotor shaft is disposed to be inserted into the inside housing space, and has a supply communication hole that communicates between the inner circumferential space and the inside housing space.Type: GrantFiled: January 30, 2012Date of Patent: December 9, 2014Assignees: Aisin Aw Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Yoshihisa Yamamoto, Masamitsu Seno, Takuya Komatsu, Natsuki Sada, Hirotaka Yata, Tomoo Atarashi, Hiromichi Kimura, Takeshi Kuwahara, Tatsuo Obata, Michitaka Tsuchida, Yoshinori Morita, Shingo Kato
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Publication number: 20140335998Abstract: A vehicle power transmission device is disposed on a hybrid vehicle having an engine and an electric motor, the vehicle power transmission device includes a first member having one of outer circumferential teeth disposed around one axial center or inner circumferential teeth meshing with the outer circumferential teeth and a second member having the other teeth, the inner circumferential teeth and the outer circumferential teeth meshes with each other to limit relative rotation around the one axial center between the first member and the second member, the relative rotation between the first member and the second member is limited to transmit torque of the electric motor to drive wheels.Type: ApplicationFiled: November 8, 2011Publication date: November 13, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Akitaka Ichikawa, Yoshimitsu Yokouchi, Masahiro Kojima, Ryuji Ibaraki, Michitaka Tsuchida, Shinichiro Suenaga, Hiromichi Kimura
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Patent number: 8882622Abstract: An electric drive device including an input member drivably coupled to an internal combustion engine, a first rotary electric machine, a second rotary electric machine disposed on an axis different from that of the first rotary electric machine, an output member drivably coupled to wheels and the second rotary electric machine, a power distribution device that distributes torque transferred from the input member to the output member and the first rotary electric machine, and a case.Type: GrantFiled: August 31, 2012Date of Patent: November 11, 2014Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Natsuki Sada, Tomoo Atarashi, Hirotaka Yata, Tomoaki Nishizuru, Michitaka Tsuchida
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Patent number: 8870697Abstract: 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 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: GrantFiled: August 31, 2012Date of Patent: October 28, 2014Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Natsuki Sada, Tomoo Atarashi, Hirotaka Yata, Tomoaki Nishizuru, Michitaka Tsuchida