Patents by Inventor Hakuba OKUNO
Hakuba OKUNO 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: 10622869Abstract: A cooling system for a rotary electric machine which is provided in a vehicle for driving the vehicle. The cooling system includes: a first pump which is to be mechanically driven accompanying with running of the vehicle, to supply lubricant to the rotary electric machine; and a second pump which is to be driven by a second drive source that is other than a first drive source of the first pump, to supply the lubricant to the rotary electric machine. The first pump is configured to supply the lubricant, through a first passage, to an inside of a rotary shaft of a rotor core of the rotary electric machine. The second pump is configured to supply the lubricant, through a second passage, to a coil of a stator of the rotary electric machine.Type: GrantFiled: August 29, 2018Date of Patent: April 14, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroaki Kiyokami, Kazuki Iwakura, Hakuba Okuno
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Patent number: 10539224Abstract: A lubricating device of a gear apparatus for a vehicle lubricates a low-rotation-side gear and a high-rotation-side gear meshing with the low-rotation-side gear. The lubricating device comprises a first tooth surface lubricating oil supply part configured to supply a lubricating oil directly to a tooth surface position located more upstream of a rotating direction of the low-rotation-side gear than a meshing position of the low-rotation-side gear with the high-rotation-side gear so as to spray some of the lubricating oil from the tooth surface position toward a tooth surface of the high-rotation-side gear, and an in-shaft lubricating oil supply part configured to supply the lubricating oil into a shaft of the high-rotation-side gear.Type: GrantFiled: August 7, 2017Date of Patent: January 21, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tetsuo Hori, Hakuba Okuno, Yukinobu Nishikawa, Hiroaki Kiyokami
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Patent number: 10465574Abstract: A hybrid vehicle comprises an engine; a first rotary machine configured to drive the hybrid vehicle; a power transmission system configured to transmit drive force from the engine and the first rotary machine via an output unit to driven wheels; a first oil pump configured to be mechanically rotary-driven along with rotation of the output unit; a second oil pump configured to be rotary-driven by a rotary drive source that is different from the output unit; a first supply passage connected to a discharge side of the first oil pump, and the first supply passage configured to supply lubricating oil at least to the first rotary machine; a second supply passage connected to a discharge side of the second oil pump, and the second supply passage configured to supply lubricating oil at least to the first rotary machine; and an oil cooler provided to the second supply passage.Type: GrantFiled: August 9, 2017Date of Patent: November 5, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroaki Kiyokami, Yukinobu Nishikawa, Tetsuo Hori, Hakuba Okuno
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Patent number: 10309524Abstract: During the travel of a vehicle, the oil level of lubricating oil is lowered due to the suction by at least a first oil pump and the scraping-up by the rotation of a differential ring gear and so on. In particular, until the oil level becomes equal to or lower than an upper end of a first partition wall, the oil level is lowered due to both the suction by the first oil pump and the scraping-up by the rotation of the differential ring gear and so on, and therefore, a region, that is immersed in the lubricating oil, of the differential device rapidly becomes smaller. Since a suction port of the first oil pump is disposed in a second oil storage portion, the oil level in the second oil storage portion during the travel of the vehicle can be adjusted independently of that in a first oil storage portion.Type: GrantFiled: January 23, 2017Date of Patent: June 4, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroaki Kiyokami, Yoshinori Morita, Shingo Kato, Yukinobu Nishikawa, Tetsuo Hori, Hakuba Okuno
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Patent number: 10253868Abstract: A lubricating apparatus for a vehicle, comprises a first oil pump and a second oil pump, and a first supply passage connected to a discharge side of the first oil pump on which the lubricating oil is discharged so as to supply the lubricating oil discharged from the first oil pump to lubricated parts of the power transmission system, a second supply passage that is provided independently from the first supply passage and is connected to a discharge side of the second oil pump on which the lubricating oil is discharged so as to supply the lubricating oil discharged from the second oil pump to the lubricated parts of the power transmission system.Type: GrantFiled: August 7, 2017Date of Patent: April 9, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroaki Kiyokami, Yukinobu Nishikawa, Tetsuo Hori, Hakuba Okuno
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Publication number: 20190081537Abstract: A cooling system for a rotary electric machine which is provided in a vehicle for driving the vehicle. The cooling system includes: a first pump which is to be mechanically driven accompanying with running of the vehicle, to supply lubricant to the rotary electric machine; and a second pump which is to be driven by a second drive source that is other than a first drive source of the first pump, to supply the lubricant to the rotary electric machine. The first pump is configured to supply the lubricant, through a first passage, to an inside of a rotary shaft of a rotor core of the rotary electric machine. The second pump is configured to supply the lubricant, through a second passage, to a coil of a stator of the rotary electric machine.Type: ApplicationFiled: August 29, 2018Publication date: March 14, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroaki KIYOKAMI, Kazuki IWAKURA, Hakuba OKUNO
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Publication number: 20180045090Abstract: A hybrid vehicle comprises an engine; a first rotary machine configured to drive the hybrid vehicle; a power transmission system configured to transmit drive force from the engine and the first rotary machine via an output unit to driven wheels; a first oil pump configured to be mechanically rotary-driven along with rotation of the output unit; a second oil pump configured to be rotary-driven by a rotary drive source that is different from the output unit; a first supply passage connected to a discharge side of the first oil pump, and the first supply passage configured to supply lubricating oil at least to the first rotary machine; a second supply passage connected to a discharge side of the second oil pump, and the second supply passage configured to supply lubricating oil at least to the first rotary machine; and an oil cooler provided to the second supply passage.Type: ApplicationFiled: August 9, 2017Publication date: February 15, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroaki KIYOKAMI, Yukinobu NISHIKAWA, Tetsuo HORI, Hakuba OKUNO
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Publication number: 20180045294Abstract: A lubricating device of a gear apparatus for a vehicle lubricates a low-rotation-side gear and a high-rotation-side gear meshing with the low-rotation-side gear. The lubricating device comprises a first tooth surface lubricating oil supply part configured to supply a lubricating oil directly to a tooth surface position located more upstream of a rotating direction of the low-rotation-side gear than a meshing position of the low-rotation-side gear with the high-rotation-side gear so as to spray some of the lubricating oil from the tooth surface position toward a tooth surface of the high-rotation-side gear, and an in-shaft lubricating oil supply part configured to supply the lubricating oil into a shaft of the high-rotation-side gear.Type: ApplicationFiled: August 7, 2017Publication date: February 15, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tetsuo HORI, Hakuba OKUNO, Yukinobu NISHIKAWA, Hiroaki KIYOKAMI
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Publication number: 20180045295Abstract: A lubricating apparatus for a vehicle, comprises a first oil pump and a second oil pump, and a first supply passage connected to a discharge side of the first oil pump on which the lubricating oil is discharged so as to supply the lubricating oil discharged from the first oil pump to lubricated parts of the power transmission system, a second supply passage that is provided independently from the first supply passage and is connected to a discharge side of the second oil pump on which the lubricating oil is discharged so as to supply the lubricating oil discharged from the second oil pump to the lubricated parts of the power transmission system.Type: ApplicationFiled: August 7, 2017Publication date: February 15, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroaki KIYOKAMI, Yukinobu NISHIKAWA, Tetsuo HORI, Hakuba OKUNO
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Publication number: 20170219085Abstract: During the travel of a vehicle, the oil level of lubricating oil is lowered due to the suction by at least a first oil pump and the scraping-up by the rotation of a differential ring gear and so on. In particular, until the oil level becomes equal to or lower than an upper end of a first partition wall, the oil level is lowered due to both the suction by the first oil pump and the scraping-up by the rotation of the differential ring gear and so on, and therefore, a region, that is immersed in the lubricating oil, of the differential device rapidly becomes smaller. Since a suction port of the first oil pump is disposed in a second oil storage portion, the oil level in the second oil storage portion during the travel of the vehicle can be adjusted independently of that in a first oil storage portion.Type: ApplicationFiled: January 23, 2017Publication date: August 3, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroaki KIYOKAMI, Yoshinori MORITA, Shingo KATO, Yukinobu NISHIKAWA, Tetsuo HORI, Hakuba OKUNO