Patents by Inventor Ryoji Habuchi
Ryoji Habuchi 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: 9587726Abstract: A power transmission unit for a vehicle including a first clutch device that selectively allows a torque transmitting route from an input shaft to an output shaft via a first gear train to transmit torque therethrough, a dog clutch that switches the torque transmitting route from the input shaft to the output shaft between a continuously variable speed change route in which the torque is transmitted through a continuously variable transmission and a reverse route in which the torque is transmitted through a second gear train, and a second clutch device that connects and disconnects both of the continuously variable speed change route and the reverse route to/from at least any one of the input shaft and the output shaft.Type: GrantFiled: May 23, 2012Date of Patent: March 7, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Michio Yoshida, Daisuke Kobayashi, Hirotsugu Yoshino, Tomoe Osada, Hirofumi Nakada, Ryoji Habuchi, Yuji Hattori
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Patent number: 9523417Abstract: There is a vehicle power transmission device in which a continuously variable transmission and a gear train are provided between an input shaft and an output shaft so as to be able to transmit torque between the input shaft and the output shaft, the gear train has at least one speed ratio that cannot be set by the continuously variable transmission. In the vehicle power transmission device, a forward-reverse switching mechanism is arranged along the same axis as an axis of the input shaft, a first clutch mechanism and a brake mechanism are provided, a second clutch mechanism is provided in a first torque transmission path that is routed from the input shaft to the output shaft via the continuously variable transmission, a third clutch mechanism is provided in a second torque transmission path that is routed from the output element to the output shaft via the gear train.Type: GrantFiled: May 23, 2013Date of Patent: December 20, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hideki Nakagawa, Michio Yoshida, Hirofumi Nakada, Ryoji Habuchi
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Publication number: 20150107410Abstract: A power transmission unit for a vehicle including a first clutch device that selectively allows a torque transmitting route from an input shaft to an output shaft via a first gear train to transmit torque therethrough, a dog clutch that switches the torque transmitting route from the input shaft to the output shaft between a continuously variable speed change route in which the torque is transmitted through a continuously variable transmission and a reverse route in which the torque is transmitted through a second gear train, and a second clutch device that connects and disconnects both of the continuously variable speed change route and the reverse route to/from at least any one of the input shaft and the output shaft.Type: ApplicationFiled: May 23, 2012Publication date: April 23, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Michio Yoshida, Daisuke Kobayashi, Hirotsugu Yoshino, Tomoe Osada, Hirofumi Nakada, Ryoji Habuchi, Yuji Hattori
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Publication number: 20150087463Abstract: There is a vehicle power transmission device in which a continuously variable transmission and a gear train are provided between an input shaft and an output shaft so as to be able to transmit torque between the input shaft and the output shaft, the gear train has at least one speed ratio that cannot be set by the continuously variable transmission. In the vehicle power transmission device, a forward-reverse switching mechanism is arranged along the same axis as an axis of the input shaft, a first clutch mechanism and a brake mechanism are provided, a second clutch mechanism is provided in a first torque transmission path that is routed from the input shaft to the output shaft via the continuously variable transmission, a third clutch mechanism is provided in a second torque transmission path that is routed from the output element to the output shaft via the gear train.Type: ApplicationFiled: May 23, 2013Publication date: March 26, 2015Inventors: Hideki Nakagawa, Michio Yoshida, Hirofumi Nakada, Ryoji Habuchi
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Patent number: 8894521Abstract: A power transmission device includes a belt-type continuously variable transmission; a first fluid pressure cylinder; a second fluid pressure cylinder; a pressure-adjustment and pressure-feed device; a fluid outflow/inflow device; and a control unit that controls the pressure-adjustment and pressure-feed device based on a fluid pressure that is obtained from a thrust that is required for the second pulley in accordance with a driving state and that, by controlling the pressure-adjustment and pressure-feed device in this manner, controls the fluid outflow/inflow device such that a gear ratio is varied within a permitted gear ratio range in accordance with the fluid pressure that is pressure-fed from the pressure-adjustment and pressure-feed device in conjunction with the pressure adjustment.Type: GrantFiled: September 30, 2009Date of Patent: November 25, 2014Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Kazumichi Tsukuda, Syoichi Sayo, Ryoji Habuchi
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Patent number: 8517871Abstract: In a vehicular belt-driven continuously variable transmission, belt squeezing force is inhibited from becoming excessive and a safety factor, with respect to belt slip, of belt squeezing force applied to a transmission belt (48) is reduced to a value that is less than or equal to 1.5 by reducing a pressure receiving area (SOUT) of an output side hydraulic cylinder (46c). As a result, a centrifugal hydraulic pressure canceller chamber on a secondary pulley side (46) can be eliminated thus simplifying the structure of the vehicular belt-driven continuously variable transmission, while belt squeezing force can be appropriately controlled.Type: GrantFiled: June 20, 2007Date of Patent: August 27, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yusuke Ogata, Yoshinobu Soga, Ryoji Habuchi, Hideki Yasue, Hirofumi Nakada
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Patent number: 8403779Abstract: A belt type continuously variable transmission includes a primary shaft and a secondary shaft, wherein the primary shaft is supported on a case via a first rolling element bearing, and the secondary shaft is supported on the case via a second rolling element bearing, the case is formed with a bolt hole at each of an even number of locations in a region separate from a shaft center plane, which is a plane that passes through a shaft center of the primary shaft and a shaft center of the secondary shaft, and first and second stopper plates that each hold down outer races of the first and second rolling element bearings are fixed to the case by bolts mounted in the bolt holes.Type: GrantFiled: October 15, 2009Date of Patent: March 26, 2013Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Kazumichi Tsukuda, Youichi Murata, Syoichi Sayo, Ryoji Habuchi
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Patent number: 8393999Abstract: In a hydraulic control system for a transmission, line pressure Pl is adjusted in accordance with a second solenoid pressure Psls if the ratio of a first sheave pressure Pin with respect to a second solenoid pressure Psls is equal to or less than the gain ?. If not so, the line pressure Pl is adjusted in accordance with the first sheave pressure Pin. Consequently, the gain ? of the first sheave pressure Pin with respect to a first solenoid pressure Pslp at a first sheave pressure adjustment valve 16 and the gain ? of a second sheave pressure Pout with respect to the second solenoid pressure Psls at a second sheave pressure adjustment valve 17 can be individually set while the line pressure Pl can be suppressed to the substantially requisite minimum in the entire control region.Type: GrantFiled: August 25, 2008Date of Patent: March 12, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yusuke Ogata, Ryoji Habuchi, Toshihiro Aoyama
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Patent number: 8328668Abstract: A vehicle power transmission device mounted on a vehicle for transmitting power from a power generating source to an axle through a gear train accommodated in a case, including: a lubricating pump that is accommodated in the case and which is driven by the power generating source and is capable of supplying a lubricating medium to an element to be lubricated; a lubricating medium storage portion that stores the lubricating medium; a lowermost gear that is located at a lowest position in the case, and which scoops up the lubricating medium in an inner bottom of the case toward a center of the case during normal rotation of the axle without guiding the lubricating medium along an inner wall surface of the case; a partition wall; and a lubrication flow path that guides the lubricating medium scooped up by the lowermost gear to a predetermined element to be lubricated.Type: GrantFiled: December 23, 2008Date of Patent: December 11, 2012Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Michihiro Ariga, Syoichi Sayo, Ryoji Habuchi
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Patent number: 8261883Abstract: A vehicle power transmission device mounted on a vehicle for transmitting power from a power generating source to an axle through a gear train accommodated in a case, including: a lubricating pump that is driven by the power generating source and is capable of supplying a lubricating medium to an element to be lubricated; a lubricating medium storage portion that stores the lubricating medium; a lowermost gear that is located at a lowest position in the case; a topmost gear that is located at a highest position in the case; a lubrication flow path that guides the lubricating medium scooped up by the lowermost gear and carried by the gear train to a predetermined element to be lubricated; and a guide portion that guides the lubricating medium scooped up by the lowermost gear and carried by the gear train to an inlet of the lubrication flow path.Type: GrantFiled: December 23, 2008Date of Patent: September 11, 2012Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Michihiro Ariga, Syoichi Sayo, Ryoji Habuchi
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Patent number: 8066595Abstract: A hydraulic control system for a vehicular drive system including a hydraulically operated belt-and-pulley type continuously variable transmission and a hydraulically operated frictional coupling device engaged for running of a vehicle, the hydraulic control system including: a first solenoid valve for regulating a belt-tensioning hydraulic pressure for tensioning a belt of the transmission, a second solenoid valve for regulating a transient coupling hydraulic pressure to be applied to the frictional coupling device in the process of an engaging action, a line-pressure regulating valve for regulating a line pressure used for hydraulically operated devices of the mechanism, and a hydraulic-circuit switching device operable to apply a control pressure of the second solenoid-operated valve to the line-pressure regulating valve after the frictional coupling device has been placed in a fully engaged state, and to apply a first control pressure of the first solenoid-operated valve to the line-pressure regulating vaType: GrantFiled: October 27, 2005Date of Patent: November 29, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yusuke Ogata, Yoshinobu Soga, Ryoji Habuchi
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Patent number: 7951026Abstract: In one embodiment, an oil pressure control apparatus includes a belt-driven continuously variable transmission, a lockup clutch provided in a torque converter, a primary regulator valve that regulates a line oil pressure that becomes a source pressure of oil pressure of various parts, and a lockup control valve that performs switching when controlling engagement/release of the lockup clutch. Control of the primary regulator valve and control of the lockup control valve are performed with a single linear solenoid valve. In this case, control of the primary regulator valve and control of the lockup control valve are performed in different ranges.Type: GrantFiled: September 8, 2008Date of Patent: May 31, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yoshinobu Soga, Ryoji Habuchi, Yusuke Ogata
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Publication number: 20100184544Abstract: In a hydraulic control system for a transmission, line pressure Pl is adjusted in accordance with a second solenoid pressure Psls if the ratio of a first sheave pressure Pin with respect to a second solenoid pressure Psls is equal to or less than the gain ?. If not so, the line pressure Pl is adjusted in accordance with the first sheave pressure Pin. Consequently, the gain ? of the first sheave pressure Pin with respect to a first solenoid pressure Pslp at a first sheave pressure adjustment valve 16 and the gain ? of a second sheave pressure Pout with respect to the second solenoid pressure Psls at a second sheave pressure adjustment valve 17 can be individually set while the line pressure Pl can be suppressed to the substantially requisite minimum in the entire control region.Type: ApplicationFiled: August 25, 2008Publication date: July 22, 2010Applicant: Toyota Jidosha Kabushiki KaishaInventors: Yusuke Ogata, Ryoji Habuchi, Toshihiro Aoyama
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Publication number: 20100099525Abstract: A power transmission device includes a belt-type continuously variable transmission; a first fluid pressure cylinder; a second fluid pressure cylinder; a pressure-adjustment and pressure-feed device;a fluid outflow/inflow device; and a control unit that controls the pressure-adjustment and pressure-feed device based on a fluid pressure that is obtained from a thrust that is required for the second pulley in accordance with a driving state and that, by controlling the pressure-adjustment and pressure-feed device in this manner, controls the fluid outflow/inflow device such that a gear ratio is varied within a permitted gear ratio range in accordance with the fluid pressure that is pressure-fed from the pressure-adjustment and pressure-feed device in conjunction with the pressure adjustment.Type: ApplicationFiled: September 30, 2009Publication date: April 22, 2010Applicants: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazumichi Tsukuda, Syoichi Sayo, Ryoji Habuchi
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Publication number: 20100099526Abstract: A belt type continuously variable transmission includes a primary shaft and a secondary shaft, wherein the primary shaft is supported on a case via a first rolling element bearing, and the secondary shaft is supported on the case via a second rolling element bearing, the case is formed with a bolt hole at each of an even number of locations in a region separate from a shaft center plane, which is a plane that passes through a shaft center of the primary shaft and a shaft center of the secondary shaft, and first and second stopper plates that each hold down outer races of the first and second rolling element bearings are fixed to the case by bolts mounted in the bolt holes.Type: ApplicationFiled: October 15, 2009Publication date: April 22, 2010Applicants: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazumichi Tsukuda, Youichi Murata, Syoichi Sayo, Ryoji Habuchi
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Publication number: 20090286633Abstract: In a vehicular belt-driven continuously variable transmission, belt squeezing force is inhibited from becoming excessive and a safety factor, with respect to belt slip, of belt squeezing force applied to a transmission belt (48) is reduced to a value that is less than or equal to 1.5 by reducing a pressure receiving area (SOUT) of an output side hydraulic cylinder (46c). As a result, a centrifugal hydraulic pressure canceller chamber on a secondary pulley side (46) can be eliminated thus simplifying the structure of the vehicular belt-driven continuously variable transmission, while belt squeezing force can be appropriately controlled.Type: ApplicationFiled: June 20, 2007Publication date: November 19, 2009Inventors: Yusuke Ogata, Yoshinobu Soga, Ryoji Habuchi, Hideki Yasue, Hirofumi Nakada
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Publication number: 20090165587Abstract: A vehicle power transmission device mounted on a vehicle for transmitting power from a power generating source to an axle through a gear train accommodated in a case, including: a lubricating pump that is driven by the power generating source and is capable of supplying a lubricating medium to an element to be lubricated; a lubricating medium storage portion that stores the lubricating medium; a lowermost gear that is located at a lowest position in the case; a topmost gear that is located at a highest position in the case; a lubrication flow path that guides the lubricating medium scooped up by the lowermost gear and carried by the gear train to a predetermined element to be lubricated; and a guide portion that guides the lubricating medium scooped up by the lowermost gear and carried by the gear train to an inlet of the lubrication flow path.Type: ApplicationFiled: December 23, 2008Publication date: July 2, 2009Applicants: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Michihiro Ariga, Syoichi Sayo, Ryoji Habuchi
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Publication number: 20090165586Abstract: A vehicle power transmission device mounted on a vehicle for transmitting power from a power generating source to an axle through a gear train accommodated in a case, including: a lubricating pump that is accommodated in the case and which is driven by the power generating source and is capable of supplying a lubricating medium to an element to be lubricated; a lubricating medium storage portion that stores the lubricating medium; a lowermost gear that is located at a lowest position in the case, and which scoops up the lubricating medium in an inner bottom of the case toward a center of the case during normal rotation of the axle without guiding the lubricating medium along an inner wall surface of the case; a partition wall; and a lubrication flow path that guides the lubricating medium scooped up by the lowermost gear to a predetermined element to be lubricated.Type: ApplicationFiled: December 23, 2008Publication date: July 2, 2009Applicants: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Michihiro Ariga, Syoichi SAYO, Ryoji Habuchi
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Publication number: 20090065318Abstract: In one embodiment, an oil pressure control apparatus includes a belt-driven continuously variable transmission, a lockup clutch provided in a torque converter, a primary regulator valve that regulates a line oil pressure that becomes a source pressure of oil pressure of various parts, and a lockup control valve that performs switching when controlling engagement/release of the lockup clutch. Control of the primary regulator valve and control of the lockup control valve are performed with a single linear solenoid valve. In this case, control of the primary regulator valve and control of the lockup control valve are performed in different ranges.Type: ApplicationFiled: September 8, 2008Publication date: March 12, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshinobu SOGA, Ryoji Habuchi, Yusuke Ogata
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Patent number: 7066860Abstract: A driving system of a motor vehicle includes a driving power source that generates power, and a belt-and-pulley type continuously variable transmission that transmits the power received from the driving power source to drive wheels while changing a first speed of rotation of an input shaft thereof to a second speed of rotation of an output shaft thereof. The driving system further includes a speed changing mechanism provided between the driving power source and the continuously variable transmission so as to increase or reduce a speed of rotation of the driving power source during forward running of the vehicle.Type: GrantFiled: July 11, 2003Date of Patent: June 27, 2006Assignee: Toyota Jidosha Kabushiki KaishaInventors: Ryoji Habuchi, Hideki Yasue