Patents by Inventor Yukio Inaguma
Yukio Inaguma 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: 8777185Abstract: A bracket of a rotation device of the present invention has a guide mechanism that is configured to guide a first motor and a second motor so as to rotate the same about an axis of a cylindrical rotating body relative to each other. A first gear and a second gear can respectively be meshed with rotating body side gears corresponding thereto while the first motor or the second motor is deviated around the axis of the cylindrical rotating body from a normal attachment position with respect to the bracket. Further, the first motor or the second motor can be guided to the normal attachment position by the guide mechanism in the condition.Type: GrantFiled: June 7, 2010Date of Patent: July 15, 2014Assignee: Toyota Shatai Kabushiki KaishaInventors: Ryousuke Ariyoshi, Yukio Inaguma, Kenji Horiguchi, Hideki Kinoshita
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Patent number: 8672356Abstract: An engagement fixture of a shoulder belt is connected to and supported by an engagement buckle disposed in a vehicle interior. When a platform is positioned in a getting in/out position in a vehicle exterior, the engagement fixture of the shoulder belt can be temporarily connected to a temporary fastening fixture provided to the platform. To the contrary, when the platform is positioned in a loading position in a vehicle interior, a connection condition of the engagement fixture of the shoulder belt can be changed from a temporary connection of the fastening fixture to a securely supportable connection of an engagement buckle in the vehicle interior. Thus, it is possible to simplify a belt attaching operation after a wheelchair is loaded in a vehicle while a columnar support member used in the conventional platform is abolished.Type: GrantFiled: July 22, 2010Date of Patent: March 18, 2014Assignee: Toyota Shatai Kabushiki KaishaInventors: Yukio Inaguma, Kenji Horiguchi, Akira Ishii, Fumiaki Katou, Masaaki Yamane
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Publication number: 20120273739Abstract: A bracket of a rotation device of the present invention has a guide mechanism that is configured to guide a first motor and a second motor so as to rotate the same about an axis of a cylindrical rotating body relative to each other. A first gear and a second gear can respectively be meshed with rotating body side gears corresponding thereto while the first motor or the second motor is deviated around the axis of the cylindrical rotating body from a normal attachment position with respect to the bracket. Further, the first motor or the second motor can be guided to the normal attachment position by the guide mechanism in the condition.Type: ApplicationFiled: June 7, 2010Publication date: November 1, 2012Applicant: TOYOTA SHATAI KABUSHIKI KAISHAInventors: Ryousuke Ariyoshi, Yukio Inaguma, Kenji Horiguchi, Hideki Kinoshita
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Publication number: 20120219395Abstract: An engagement fixture of a shoulder belt is connected to and supported by an engagement buckle disposed in a vehicle interior. When a platform is positioned in a getting in/out position in a vehicle exterior, the engagement fixture of the shoulder belt can be temporarily connected to a temporary fastening fixture provided to the platform. To the contrary, when the platform is positioned in a loading position in a vehicle interior, a connection condition of the engagement fixture of the shoulder belt can be changed from a temporary connection of the fastening fixture to a securely supportable connection of an engagement buckle in the vehicle interior. Thus, it is possible to simplify a belt attaching operation after a wheelchair is loaded in a vehicle while a columnar support member used in the conventional platform is abolished.Type: ApplicationFiled: July 22, 2010Publication date: August 30, 2012Applicant: TOYOTA SHATAI KABUSHIKI KAISHAInventors: Yukio Inaguma, Kenji Horiguchi, Akira Ishii, Fumiaki Katou, Masaaki Yamane
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Publication number: 20100276245Abstract: A dog clutch actuator including a sleeve including dog teeth made engageable with the dog teeth formed in a power transmission shaft and made movable in the axial direction, and a plunger for moving together with the sleeve. The plunger is axially moved through a yoke by electric currents to flow through coils. In the dog clutch actuator, by the shapes of the plunger and the yoke, a sucking force increases in the engaging direction, when the dog clutch is engaged, and decreases in the disengaging direction, when the dog clutch is disengaged.Type: ApplicationFiled: April 1, 2008Publication date: November 4, 2010Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takaji Umeno, Yukio Inaguma, Tomokazu Yamauchi, Shoichi Sasaki
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Patent number: 7649292Abstract: An induction machine includes a stator provided with stator windings and a first rotor provided with first rotor windings, and generates an induction current in one of the stator windings and the first rotor windings by a rotating magnetic field generated in the other of the stator windings and the first rotor windings. A synchronous machine includes a second rotor which is provided with second rotor windings connected to the first rotor windings and coupled to the first rotor, and a third rotor which is provided with permanent magnets and rotatable independent of the second rotor, and a torque acts between the second rotor and the third rotor due to the interaction between the rotating magnetic field generated in the second rotor windings and the field flux generated in the permanent magnets.Type: GrantFiled: October 19, 2006Date of Patent: January 19, 2010Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Kazunari Moriya, Yukio Inaguma, Hiroo Fuma
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Publication number: 20070090707Abstract: An induction machine includes a stator provided with stator windings and a first rotor provided with first rotor windings, and generates an induction current in one of the stator windings and the first rotor windings by a rotating magnetic field generated in the other of the stator windings and the first rotor windings. A synchronous machine includes a second rotor which is provided with second rotor windings connected to the first rotor windings and coupled to the first rotor, and a third rotor which is provided with permanent magnets and rotatable independent of the second rotor, and a torque acts between the second rotor and the third rotor due to the interaction between the rotating magnetic field generated in the second rotor windings and the field flux generated in the permanent magnets.Type: ApplicationFiled: October 19, 2006Publication date: April 26, 2007Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Kazunari Moriya, Yukio Inaguma, Hiroo Fuma
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Patent number: 7208903Abstract: In one coordinate system of arbitrary rectangular coordinate systems including a coordinate system in which the position of a stator is fixed, a coordinate system in which the position of a rotor is fixed, and a coordinate system which rotates at a rotational frequency which is n times (n is an integer which is not 0 or 1) that of the rotor, a filter on any other coordinate system is defined. Further, driving of a motor is controlled by utilizing this filter. As a result, a coordinate transformation operation need not be individually performed with respect to control variables.Type: GrantFiled: May 31, 2006Date of Patent: April 24, 2007Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hideo Nakai, Hiroki Ohtani, Yukio Inaguma, Katsuhiro Asano, Hideto Hanada, Masaki Okamura
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Patent number: 7199548Abstract: A drive control apparatus, which controls an AC motor subjected to rotational drive by applying a rectangular wave voltage thereto, comprising: an actual torque detection section for detecting an actual torque value T outputted from the AC motor; an estimated torque calculation section for calculating an estimated torque value Tm based on a motor model with the AC motor in a simulated state; and a voltage phase calculation section wherein the voltage phase calculation section calculates a first voltage phase ?fb based on the actual torque value T and a command torque value T*, and a second voltage phase ?ff based on the estimated torque value Tm and the command torque value T* respectively, and outputs a value obtained by making the voltage phase subjected to weighting addition, as a voltage phase ?v.Type: GrantFiled: July 7, 2005Date of Patent: April 3, 2007Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Yukio Inaguma, Hideo Nakai, Hiroki Ohtani, Masaki Okamura
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Publication number: 20060214625Abstract: In one coordinate system of arbitrary rectangular coordinate systems including a coordinate system in which the position of a stator is fixed, a coordinate system in which the position of a rotor is fixed, and a coordinate system which rotates at a rotational frequency which is n times (n is an integer which is not 0 or 1) that of the rotor, a filter on any other coordinate system is defined. Further, driving of a motor is controlled by utilizing this filter. As a result, a coordinate transformation operation need not be individually performed with respect to control variables.Type: ApplicationFiled: May 31, 2006Publication date: September 28, 2006Inventors: Hideo Nakai, Hiroki Ohtani, Yukio Inaguma, Katsuhiro Asano, Hideto Hanada, Nasaki Okamura
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Patent number: 7078874Abstract: In one coordinate system of arbitrary rectangular coordinate systems including a coordinate system in which the position of a stator is fixed, a coordinate system in which the position of a rotor is fixed, and a coordinate system which rotates at a rotational frequency which is n times (n is an integer which is not 0 or 1) that of the rotor, a filter on any other coordinate system is defined. Further, driving of a motor is controlled by utilizing this filter. As a result, a coordinate transformation operation need not be individually performed with respect to control variables.Type: GrantFiled: August 15, 2005Date of Patent: July 18, 2006Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hideo Nakai, Hiroki Ohtani, Yukio Inaguma, Katsuhiro Asano, Hideto Hanada, Masaki Okamura
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Publication number: 20060049796Abstract: In one coordinate system of arbitrary rectangular coordinate systems including a coordinate system in which the position of a stator is fixed, a coordinate system in which the position of a rotor is fixed, and a coordinate system which rotates at a rotational frequency which is n times (n is an integer which is not 0 or 1) that of the rotor, a filter on any other coordinate system is defined. Further, driving of a motor is controlled by utilizing this filter. As a result, a coordinate transformation operation need not be individually performed with respect to control variables.Type: ApplicationFiled: August 15, 2005Publication date: March 9, 2006Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hideo Nakai, Hiroki Ohtani, Yukio Inaguma, Katsuhiro Asano, Hideto Hanada, Masaki Okamura
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Publication number: 20060006825Abstract: A drive control apparatus, which controls an AC motor subjected to rotational drive by applying a rectangular wave voltage thereto, comprising: an actual torque detection section for detecting an actual torque value T outputted from the AC motor; an estimated torque calculation section for calculating an estimated torque value Tm based on a motor model with the AC motor in a simulated state; and a voltage phase calculation section wherein the voltage phase calculation section calculates a first voltage phase ?fb based on the actual torque value T and a command torque value T*, and a second voltage phase ?ff based on the estimated torque value Tm and the command torque value T* respectively, and outputs a value obtained by making the voltage phase subjected to weighting addition, as a voltage phase ?v.Type: ApplicationFiled: July 7, 2005Publication date: January 12, 2006Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Yukio Inaguma, Hideo Nakai, Hiroki Ohtani, Masaki Okamura
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Patent number: 6956341Abstract: Two inverters (INV1, INV2) supply phase currents to three-phase coils (Y1, Y2). Although two phase currents must conventionally be measured and four current sensors are thus required, according to the present invention, the number of phase currents to be measured is reduced as a result of use of an observer for phase current estimation.Type: GrantFiled: July 28, 2003Date of Patent: October 18, 2005Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Toyota Jidosha Kabushiki KaishaInventors: Hideo Nakai, Hiroo Fuma, Yukio Inaguma, Seiji Nakamura
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Patent number: 6942048Abstract: An accessory drive apparatus includes a power source, an accessory system that provides an input to the power source, an accessory driving source that drives the accessory system, and a power combination/distribution mechanism that is connected to the power source and the accessory system to transmit power from both the power source and the accessory driving source to the accessory system. With this arrangement, the accessory system is driven by a combination of power received from the accessory driving source and the power source.Type: GrantFiled: February 22, 2002Date of Patent: September 13, 2005Assignee: Toyota Jidosha Kabushiki KaishaInventors: Tetsuhiro Ishikawa, Shoichi Sasaki, Sumikazu Shamoto, Hiroshi Sugiura, Yukio Inaguma, Kazunari Moriya
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Publication number: 20040075406Abstract: Two inverters (INV1, INV2) supply phase currents to three-phase coils (Y1, Y2). Although two phase currents must conventionally be measured and four current sensors are thus required, according to the present invention, the number of phase currents to be measured is reduced as a result of use of an observer for phase current estimation.Type: ApplicationFiled: July 28, 2003Publication date: April 22, 2004Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA BAKUSHIKI KAISHAInventors: Hideo Nakai, Hiroo Fuma, Yukio Inaguma, Seiji Nakamura
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Patent number: 6630804Abstract: A direct-current power supply (40) is connected between the neutral points of two three-phase coils (24, 26) of a 2Y motor (22) constituted of the windings of the two three-phase coils (24, 26), which are connected in Y-connection and wound on a same stator, and to which three-phase alternating current power is severally supplied with a phase difference of a shifted angle between the windings from two inverter circuits (30, 32) having a positive pole bus (34) and a negative pole bus (36) for common use. A capacitor (38) is connected between the positive pole bus (34) and the negative pole bus (36). The electric potential difference between the neutral points of the three-phase coils (24, 26) is made larger or smaller than the voltage of the direct-current power supply (40) through the switching control of the inverter circuits (30, 32). Thereby, the capacitor (38) can be charged or discharged. Consequently, an inverter input voltage can be adjusted within a wide range.Type: GrantFiled: November 14, 2001Date of Patent: October 7, 2003Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Toyota Jidosha Kabushiki KaishaInventors: Kazunari Moriya, Yukio Inaguma, Hideo Nakai, Hiroki Ohtani, Sumikazu Shamoto, Masayuki Komatsu, Shoichi Sasaki
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Patent number: 6548984Abstract: When the absolute values of the negative voltage V− and the positive voltage V+ of a rectangular wave to be applied to the three phase coils of the motor driven using a rectangular-waved voltage are different, time T1 and time T2 for the rectangular wave are adjusted such that the area A representing the absolute value of a time integration value of the negative voltage V− and the area B representing the absolute value of a time integration value of the positive voltage V+ becomes equal to each other. With this adjustment, the average voltage of the rectangular wave becomes of value 0, so that a DC component current is prevented from flowing into the three phase coils of the motor.Type: GrantFiled: June 25, 2001Date of Patent: April 15, 2003Assignee: Toyoda Jidosha Kabushiki KaishaInventors: Sumikazu Shamoto, Shoichi Sasaki, Eiji Sato, Masayuki Komatsu, Kazunari Moriya, Hiroki Ohtani, Yukio Inaguma
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Patent number: 6518736Abstract: A direct-current power supply connecting the negative pole bus of an inverter circuit and the neutral point of a motor and a capacitor connecting the positive pole bus of the inverter circuit and the neutral point of the motor are provided for performing the switching control of the transistors T1-T6 of the inverter circuit on the basis of a phase voltage command value formed by the addition of a direct-current component and an alternating-current component. The voltage between the terminals of the capacitor is controlled on the direct-current component, and the driving control of the motor is performed on the alternating-current component. The supply voltage of the direct-current power supply can be made to be lower than a voltage necessary to drive the motor.Type: GrantFiled: June 18, 2001Date of Patent: February 11, 2003Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Shoichi Sasaki, Sumikazu Shamoto, Masayuki Komatsu, Kazunari Moriya, Hiroki Ohtani, Yukio Inaguma
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Publication number: 20020153180Abstract: An accessory drive apparatus includes a power source, an accessory system that provides an input to the power source, an accessory driving source that drives the accessory system, and a power combination/distribution mechanism that is connected to the power source and the accessory system to transmit power from both the power source and the accessory driving source to the accessory system. With this arrangement, the accessory system is driven by a combination of power received from the accessory driving source and the power source.Type: ApplicationFiled: February 22, 2002Publication date: October 24, 2002Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tetsuhiro Ishikawa, Shoichi Sasaki, Sumikazu Shamoto, Hiroshi Sugiura, Yukio Inaguma, Kazunari Moriya