Patents by Inventor Akihide Takehara
Akihide Takehara 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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Publication number: 20230369951Abstract: To reduce the power supply voltage during induction heating using a coil provided in a stator core. A method for manufacturing a stator according to one aspect of the present disclosure includes: disposing a three-phase coil in an annular stator core; and making a three-phase alternating current pass through the three-phase coil, thereby inductively heating the stator core. Capacitors are respectively provided between a power supply configured to supply the three-phase alternating current to ends of the three-phase coil and each one of the ends of coils of respective phases in the three-phase coil, whereby a circuit comprising the three-phase coil serves as a resonant circuit when the three-phase alternating current is made to pass through the three-phase coil.Type: ApplicationFiled: April 24, 2023Publication date: November 16, 2023Applicant: Toyota Jidosha Kabushiki KaishaInventors: Hiroaki URANO, Akihide Shimmei, Akihide Takehara
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Patent number: 11804749Abstract: A stator of the present disclosure includes a stator core, a stator coil wound around the stator core, and a busbar module electrically connected to the stator coil and fixed to a coil end portion formed on one end side of the stator core. The busbar module includes a module body that holds a conductive member, a hole that penetrates the module body, and a bridge portion that extends from a part of the inner peripheral surface of the hole to another part of the inner peripheral surface so as to divide an inside of the hole into a plurality of opening regions and is fixed to the coil end portion with an adhesive introduced into the hole and cured therein. In the stator, the busbar module is fixed more firmly to the coil end formed on one end side of the stator core with the adhesive.Type: GrantFiled: February 2, 2022Date of Patent: October 31, 2023Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN CORPORATIONInventors: Yasunori Suzuki, Akihide Takehara, Takuya Kitao, Ryoji Nakajima
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Patent number: 11626778Abstract: A first U-shaped part that is bent so as to form a pair of opposite surfaces facing each other, and a second U-shaped part that is bent so as to form a pair of opposite surfaces facing each other are provided side by side in a bus bar main body of a neutral conductor bus bar. One of the first pair of opposite surfaces and one of the second pair of opposite surfaces are located in the same plane, and the other of the first pair of opposite surfaces and the other of the second pair of opposite surfaces are located in the same plane. A temperature sensor is retained by being inserted through a gap between the first pair of opposite surfaces and a gap between the second pair of opposite surfaces.Type: GrantFiled: March 3, 2021Date of Patent: April 11, 2023Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yukio Tsuchiya, Akihide Takehara
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Patent number: 11545859Abstract: A step of inserting an insulating paper into a slot of a stator core (second step) is performed, a step of placing a jig at a position that is on a side opposite to a side from which a segment coil is inserted into the slot of the stator core and that overlaps with a protrusion when viewed in an inserting direction of the segment coil (third step) is performed, and then a step of inserting the segment coil into the slot (fourth step) is performed. Therefore, even when the insulating paper is dragged by the segment coil in the process of inserting the segment coil into the slot, the insulating paper abuts the jig and the movement of the insulating paper is restricted, thereby suppressing displacement of the insulating paper from the slot.Type: GrantFiled: April 28, 2021Date of Patent: January 3, 2023Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yukio Tsuchiya, Akihide Takehara, Toshihiro Takei, So Akimori
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Publication number: 20220255389Abstract: A stator of the present disclosure includes a stator core, a stator coil wound around the stator core, and a busbar module electrically connected to the stator coil and fixed to a coil end portion formed on one end side of the stator core. The busbar module includes a module body that holds a conductive member, a hole that penetrates the module body, and a bridge portion that extends from a part of the inner peripheral surface of the hole to another part of the inner peripheral surface so as to divide an inside of the hole into a plurality of opening regions and is fixed to the coil end portion with an adhesive introduced into the hole and cured therein. In the stator, the busbar module is fixed more firmly to the coil end formed on one end side of the stator core with the adhesive.Type: ApplicationFiled: February 2, 2022Publication date: August 11, 2022Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN CORPORATIONInventors: Yasunori SUZUKI, Akihide TAKEHARA, Takuya KITAO, Ryoji NAKAJIMA
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Publication number: 20210376671Abstract: A step of inserting an insulating paper into a slot of a stator core (second step) is performed, a step of placing a jig at a position that is on a side opposite to a side from which a segment coil is inserted into the slot of the stator core and that overlaps with a protrusion when viewed in an inserting direction of the segment coil (third step) is performed, and then a step of inserting the segment coil into the slot (fourth step) is performed. Therefore, even when the insulating paper is dragged by the segment coil in the process of inserting the segment coil into the slot, the insulating paper abuts the jig and the movement of the insulating paper is restricted, thereby suppressing displacement of the insulating paper from the slot.Type: ApplicationFiled: April 28, 2021Publication date: December 2, 2021Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yukio TSUCHIYA, Akihide TAKEHARA, Toshihiro TAKEI, So AKIMORI
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Publication number: 20210344247Abstract: A first U-shaped part that is bent so as to form a pair of opposite surfaces facing each other, and a second U-shaped part that is bent so as to form a pair of opposite surfaces facing each other are provided side by side in a bus bar main body of a neutral conductor bus bar. One of the first pair of opposite surfaces and one of the second pair of opposite surfaces are located in the same plane, and the other of the first pair of opposite surfaces and the other of the second pair of opposite surfaces are located in the same plane. A temperature sensor is retained by being inserted through a gap between the first pair of opposite surfaces and a gap between the second pair of opposite surfaces.Type: ApplicationFiled: March 3, 2021Publication date: November 4, 2021Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yukio TSUCHIYA, Akihide TAKEHARA
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Patent number: 8110938Abstract: A line connection structure for a PCU includes: the PCU mounted in an engine room positioned on a front side of a hybrid vehicle; an air cleaner that is provided on a rear side of the vehicle so as to face the PCU and that includes a resin portion deforming easier than electric equipment; and a cable connected to the PCU. The cable is formed by three-phase cables of U, V, and W phases being gathered. The cable is connected to the PCU on the side surface of the PCU positioned on the vehicular-rear side. The three-phase cables positioned between the PCU and the air cleaner is provided so as to align on the identical plane parallel to the width direction of the hybrid vehicle.Type: GrantFiled: May 14, 2007Date of Patent: February 7, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Akihide Takehara, Tatsuhiko Mizutani, Makoto Kubota
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Patent number: 7948138Abstract: A rotor is provided with a rotor core, a magnet inserted into the rotor core and a filling portion arranged in a space between the rotor core and the magnet. The space between the rotor core and a radially outer side surface of the magnet has a uniform width in a central portion (portion (A)) with respect to a width direction (of arrow (DR4)) of the magnet. A width of the space in an end portion (portion (B)) with respect to the width direction (of arrow (DR4)) of the magnet is larger than that of the space in the portion (A).Type: GrantFiled: November 17, 2005Date of Patent: May 24, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroyuki Hattori, Akihide Takehara
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Publication number: 20090256420Abstract: A line connection structure for a PCU includes: the PCU mounted in an engine room positioned on a front side of a hybrid vehicle; an air cleaner that is provided on a rear side of the vehicle so as to face the PCU and that includes a resin portion deforming easier than electric equipment; and a cable connected to the PCU. The cable is formed by three-phase cables of U, V, and W phases being gathered. The cable is connected to the PCU on the side surface of the PCU positioned on the vehicular-rear side. The three-phase cables positioned between the PCU and the air cleaner is provided so as to align on the identical plane parallel to the width direction of the hybrid vehicle.Type: ApplicationFiled: May 14, 2007Publication date: October 15, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Akihide Takehara, Tatsuhiko Mizutani, Makoto Kubota
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Publication number: 20090079287Abstract: A rotor is provided with a rotor core, a magnet inserted into the rotor core and a filling portion arranged in a space between the rotor core and the magnet. The space between the rotor core and a radially outer side surface of the magnet has a uniform width in a central portion (portion (A)) with respect to a width direction (of arrow (DR4)) of the magnet. A width of the space in an end portion (portion (B)) with respect to the width direction (of arrow (DR4)) of the magnet is larger than that of the space in the portion (A).Type: ApplicationFiled: November 17, 2005Publication date: March 26, 2009Inventors: Hiroyuki Hattori, Akihide Takehara