Patents by Inventor Hirotaka Yata

Hirotaka Yata 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: 10094377
    Abstract: An oil pump for a vehicle includes a driven gear, a drive gear, a pump body, and a plate. The drive gear engages the driven gear. The pump body is secured to a rear cover of a transaxle case. The plate is interposed between the rear cover and the pump body. A pump chamber is formed between the rear cover and the pump body. The driven gear and the drive gear are housed in the pump chamber. The pump chamber is formed: between the plate and the pump body, or between the plate and the rear cover.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: October 9, 2018
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.
    Inventors: Tatsuo Obata, Hiromichi Kimura, Takeshi Kuwahara, Katsuhide Kitagawa, Kunio Morisawa, Masamitsu Seno, Hirotaka Yata, Tomoo Atarashi
  • Patent number: 8905881
    Abstract: 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: Grant
    Filed: February 10, 2011
    Date of Patent: December 9, 2014
    Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Natsuki Sada, Tomoo Atarashi, Hirotaka Yata, Tomoaki Nishizuru, Michitaka Tsuchida
  • Patent number: 8905885
    Abstract: 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: Grant
    Filed: January 30, 2012
    Date of Patent: December 9, 2014
    Assignees: Aisin Aw Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshihisa Yamamoto, Masamitsu Seno, Takuya Komatsu, Natsuki Sada, Hirotaka Yata, Tomoo Atarashi, Hiromichi Kimura, Takeshi Kuwahara, Tatsuo Obata, Michitaka Tsuchida, Yoshinori Morita, Shingo Kato
  • Publication number: 20140341757
    Abstract: A plate is interposed between a rear cover and a pump body. The pump chamber is formed between the plate and the pump body.
    Type: Application
    Filed: November 29, 2012
    Publication date: November 20, 2014
    Applicants: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tatsuo Obata, Hiromichi Kimura, Takeshi Kuwahara, Katsuhide Kitagawa, Kunio Morisawa, Masamitsu Seno, Hirotaka Yata, Tomoo Atarashi
  • Patent number: 8882622
    Abstract: 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: Grant
    Filed: August 31, 2012
    Date of Patent: November 11, 2014
    Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Natsuki Sada, Tomoo Atarashi, Hirotaka Yata, Tomoaki Nishizuru, Michitaka Tsuchida
  • Patent number: 8870697
    Abstract: 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: Grant
    Filed: August 31, 2012
    Date of Patent: October 28, 2014
    Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Natsuki Sada, Tomoo Atarashi, Hirotaka Yata, Tomoaki Nishizuru, Michitaka Tsuchida
  • Patent number: 8840511
    Abstract: A vehicle drive device configured with an input member coupled to an internal combustion engine, a rotary electric machine, an output member coupled to wheels, and a power transfer mechanism that drivably couples the input member, the rotary electric machine, and the output member. An oil collecting portion is configured to collect oil supplied by rotation of the power transfer mechanism, The collected oil falling passage is configured to cause the oil collected by the oil collecting portion to flow downward to be supplied to a portion of a facing wall surface located above a cylindrical member. A communication oil passage communicates between the gap and the inside housing space is formed at a portion of abutment between the subject support bearing and the support projecting portion.
    Type: Grant
    Filed: January 16, 2012
    Date of Patent: September 23, 2014
    Assignees: Aisin AW Co., Ltd., Toyota Jiddosha Kabushiki Kaisha
    Inventors: Masamitsu Seno, Hirotaka Yata, Natsuki Sada, Takuya Komatsu, Tomoo Atarashi, Michinobu Suzuki, Hiromichi Kimura, Michitaka Tsuchida
  • Patent number: 8808128
    Abstract: 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: Grant
    Filed: February 10, 2011
    Date of Patent: August 19, 2014
    Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Natsuki Sada, Tomoo Atarashi, Hirotaka Yata, Tomoaki Nishizuru, Michitaka Tsuchida
  • Patent number: 8808125
    Abstract: A hybrid vehicle driving apparatus includes: a first rotor shaft of a first electric motor, the first electric motor being disposed on a first axis; a power distribution mechanism that includes a planetary gear device and is disposed on the first axis; an output gear shaft that serves as an output member of the power distribution mechanism and is disposed on the first axis; a counter shaft disposed on a second axis; a second rotor shaft of a second electric motor disposed on a third axis; a power transmission shaft disposed on the third axis; a differential gear disposed on a fourth axis; and a casing that includes a plurality of case members. The output gear shaft, the power transmission shaft, the counter shaft, the differential gear, the first rotor shaft, and the second rotor shaft are rotatably supported by a common case member that is one of the plurality of case members.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: August 19, 2014
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Aw Co., Ltd.
    Inventors: Michitaka Tsuchida, Tomoaki Nishizuru, Tatsuo Obata, Natsuki Sada, Hirotaka Yata, Tomoo Atarashi
  • Patent number: 8653704
    Abstract: A vehicle drive system configured with a dynamo within a case. The case is disposed on at least one axial side of the dynamo, and includes a wall portion overlapping the dynamo, which has a section that overlaps with the dynamo as viewed from the axial direction. The wall portion overlapping the dynamo includes a supply flow passage through which lubricating-cooling fluid flows, and which is formed with a first supply portion that supplies lubricating-cooling fluid to a rotor support bearing for the dynamo electric. The first supply portion includes a throttle portion whose flow passage cross-sectional area is small when compared to an upstream-side flow passage cross-sectional area in the flow direction of lubricating-cooling fluid. The supply flow passage includes a second supply portion that is a portion supplying lubricating-cooling fluid to the dynamo and higher than the first supply portion.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: February 18, 2014
    Assignee: Aisin AW Co., Ltd.
    Inventors: Tomoo Atarashi, Hirotaka Yata, Isao Fujishima
  • Publication number: 20130305878
    Abstract: A vehicle drive device configured with an input member coupled to an internal combustion engine, a rotary electric machine, an output member coupled to wheels, and a power transfer mechanism that drivably couples the input member, the rotary electric machine, and the output member. An oil collecting portion is configured to collect oil supplied by rotation of the power transfer mechanism, The collected oil falling passage is configured to cause the oil collected by the oil collecting portion to flow downward to be supplied to a portion of a facing wall surface located above a cylindrical member. A communication oil passage communicates between the gap and the inside housing space is formed at a portion of abutment between the subject support bearing and the support projecting portion.
    Type: Application
    Filed: January 16, 2012
    Publication date: November 21, 2013
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.
    Inventors: Masamitsu Seno, Hirotaka Yata, Natsuki Sada, Takuya Komatsu, Tomoo Atarashi, Michinobu Suzuki, Hiromichi Kimura, Michitaka Tsuchida
  • Publication number: 20130283972
    Abstract: 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: Application
    Filed: January 30, 2012
    Publication date: October 31, 2013
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.
    Inventors: Yoshihisa Yamamoto, Masamitsu Seno, Takuya Komatsu, Natsuki Sada, Hirotaka Yata, Tomoo Atarashi, Hiromichi Kimura, Takeshi Kuwahara, Tatsuo Obata, Michitaka Tsuchida, Yoshinori Morita, Shingo Kato
  • Publication number: 20130184111
    Abstract: A hybrid vehicle driving apparatus includes: a first rotor shaft of a first electric motor, the first electric motor being disposed on a first axis; a power distribution mechanism that includes a planetary gear device and is disposed on the first axis; an output gear shaft that serves as an output member of the power distribution mechanism and is disposed on the first axis; a counter shaft disposed on a second axis; a second rotor shaft of a second electric motor disposed on a third axis; a power transmission shaft disposed on the third axis; a differential gear disposed on a fourth axis; and a casing that includes a plurality of case members. The output gear shaft, the power transmission shaft, the counter shaft, the differential gear, the first rotor shaft, and the second rotor shaft are rotatably supported by a common case member that is one of the plurality of case members.
    Type: Application
    Filed: July 19, 2012
    Publication date: July 18, 2013
    Applicants: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Michitaka Tsuchida, Tomoaki Nishizuru, Tatsuo Obata, Natsuki Sada, Hirotaka Yata, Tomoo Atarashi
  • Publication number: 20130023372
    Abstract: 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: Application
    Filed: August 31, 2012
    Publication date: January 24, 2013
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.
    Inventors: Natsuki SADA, Tomoo ATARASHI, Hirotaka YATA, Tomoaki NISHIZURU, Michitaka TSUCHIDA
  • Publication number: 20130023369
    Abstract: 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: Application
    Filed: August 31, 2012
    Publication date: January 24, 2013
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.
    Inventors: Natsuki SADA, Tomoo ATARASHI, Hirotaka YATA, Tomoaki NISHIZURU, Michitaka TSUCHIDA
  • Publication number: 20130008284
    Abstract: 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: Application
    Filed: February 10, 2011
    Publication date: January 10, 2013
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.
    Inventors: Natsuki Sada, Tomoo Atarashi, Hirotaka Yata, Tomoaki Nishizuru, Michitaka Tsuchida
  • Publication number: 20120329594
    Abstract: 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: Application
    Filed: February 10, 2011
    Publication date: December 27, 2012
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.
    Inventors: Natsuki Sada, Tomoo Atarashi, Hirotaka Yata, Tomoaki Nishizuru, Michitaka Tsuchida
  • Publication number: 20110298314
    Abstract: A vehicle drive system configured with a dynamo within a case. The case is disposed on at least one axial side of the dynamo, and includes a wall portion overlapping the dynamo, which has a section that overlaps with the dynamo as viewed from the axial direction. The wall portion overlapping the dynamo includes a supply flow passage through which lubricating-cooling fluid flows, and which is formed with a first supply portion that supplies lubricating-cooling fluid to a rotor support bearing for the dynamo electric. The first supply portion includes a throttle portion whose flow passage cross-sectional area is small when compared to an upstream-side flow passage cross-sectional area in the flow direction of lubricating-cooling fluid. The supply flow passage includes a second supply portion that is a portion supplying lubricating-cooling fluid to the dynamo and higher than the first supply portion.
    Type: Application
    Filed: May 13, 2011
    Publication date: December 8, 2011
    Applicant: AISIN AW CO., LTD.
    Inventors: Tomoo ATARASHI, Hirotaka YATA, Isao FUJISHIMA
  • Patent number: 7632201
    Abstract: A hybrid drive apparatus including an input shaft; a first motor and a second motor; a power distributing planetary gear; an intermediate transmission shaft; and a partition wall provided between a motor part including the first motor and the second motor and a transmission part including the transmission such that the intermediate shaft passes through the partition wall.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: December 15, 2009
    Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Shigeki Takami, Tomoo Atarashi, Hirotaka Yata, Makoto Iwanaka, Takuma Kakinami, Yasuo Hojo, Masahiro Kojima, Ryuji Ibaraki, Atsushi Tabata, Yuji Iwase, Tooru Matsubara, Hiroyuki Shibata
  • Publication number: 20070107960
    Abstract: A hybrid drive apparatus including an input shaft; a first motor and a second motor; a power distributing planetary gear; an intermediate transmission shaft; and a partition wall provided between a motor part including the first motor and the second motor and a transmission part including the transmission such that the intermediate shaft passes through the partition wall.
    Type: Application
    Filed: October 26, 2006
    Publication date: May 17, 2007
    Applicants: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shigeki Takami, Tomoo Atarashi, Hirotaka Yata, Makoto Iwanaka, Takuma Kakinami, Yasuo Hojo, Masahiro Kojima, Ryuji Ibaraki, Atsushi Tabata, Yuji Iwase, Tooru Matsubara, Hiroyuki Shibata