Patents by Inventor Toshihiro Takei
Toshihiro Takei 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: 20240120780Abstract: A rotary electric machine includes a rotor core and a stator core. The rotor core includes a steel plate laminated in an axial direction of a rotation shaft of a rotor. The stator core is provided outside an outer periphery of the rotor core and includes a steel plate laminated in the axial direction. An average plate thickness of the steel plate of the stator core is smaller than an average plate thickness of the steel plate of the rotor core. In the steel plate of the stator core, a plate thickness of a portion between a predetermined position and a radially outer edge in a radial direction around the rotation axis is smaller than a plate thickness of a portion between the predetermined position and a radially inner edge in the radial direction.Type: ApplicationFiled: October 9, 2023Publication date: April 11, 2024Inventors: Keiji KONDO, Toshihiro TAKEI, Atsushi UMEDA, Hirotaka KUROZAKI
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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: 20220385132Abstract: A stator includes a stator core, stator windings provided in the stator core, and a busbar connected to coil end portions of the stator windings. The busbar is composed of a flat conductor body and has a main body portion extended in a circumferential direction in parallel to a circumference of the stator core and multiple protruding portions extended radially from the main body portion. The protruding portions and the coil end portions are joined by laser welding. A thickness of each of the protruding portions in a laser beam emitting direction in which a welded portion is irradiated with a laser beam during the laser welding is greater than a plate thickness of the main body portion in the same direction.Type: ApplicationFiled: May 31, 2022Publication date: December 1, 2022Applicant: DENSO CORPORATIONInventor: Toshihiro TAKEI
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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: 20210057971Abstract: A method of manufacturing a stator includes steps of: inserting a stator coil into slots of a stator core so as to have parts of the stator coil protruding from an axial end face of the stator core; and bending the protruding parts of the stator coil in a circumferential direction. Moreover, in the bending step: a bending jig with a press surface is arranged on the axial end face of the stator core to cover at least part of a corresponding tooth of the stator core; and at least one of the protruding parts is pressed against the press surface of the bending jig, thereby being bent in the circumferential direction. Furthermore, a circumferential width of the press surface is larger than a circumferential width of a facing part of the corresponding tooth; the facing part faces the at least one of the protruding parts in the circumferential direction.Type: ApplicationFiled: August 20, 2020Publication date: February 25, 2021Applicant: DENSO CORPORATIONInventors: Hiroaki TAKEDA, Toshihiro TAKEI
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Patent number: 10574106Abstract: A stator for a rotating electric machine includes an annular stator core and a stator coil. The stator core has a plurality of slots arranged in a circumferential direction thereof. The stator coil is formed of a plurality of electric conductor segments mounted on the stator core. Each of the electric conductor segments has a pair of in-slot portions and a turn portion. Each of the pair of in-slot portions is inserted in a corresponding one of the slots of the stator core. The turn portion is located on one axial side of the stator core and connects the pair of in-slot portions. Moreover, for each of the electric conductor segments, at least one of the pair of in-slot portions of the electric conductor segment includes a protruding part that protrudes in the circumferential direction of the stator core.Type: GrantFiled: August 24, 2017Date of Patent: February 25, 2020Assignee: DENSO CORPORATIONInventor: Toshihiro Takei
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Patent number: 10348148Abstract: A stator includes an annular stator core and a multi-phase stator coil. The stator core has slots arranged in a circumferential direction thereof. The stator coil is comprised of phase windings that are mounted on the stator core so as to be received in the slots of the stator core. The stator coil has an annular coil end part protruding axially outward from an axial end face of the stator core. The stator coil includes, at least, two lead wires and a joint. Each of the lead wires is connected with one of the phase windings of the stator coil and led out from a radially inner periphery of the coil end part. At the joint, distal ends of the lead wires are joined to each other. Adjoining portions of the lead wires, which adjoin each other, are arranged radially inside a radially-inner peripheral surface of the coil end part.Type: GrantFiled: March 17, 2017Date of Patent: July 9, 2019Assignee: DENSO CORPORATIONInventor: Toshihiro Takei
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Patent number: 10263498Abstract: A rotating electric machine includes a rotor, a stator, a temperature detecting element, and a cooling apparatus. The stator includes a stator core that is disposed so as to oppose the rotor in a radial direction of the rotating electric machine, and a stator winding that is wound around the stator core. The temperature detecting element is set in the stator winding. The cooling apparatus drips a liquid coolant onto coil end portions of the stator winding, thereby performing cooling. The stator winding has a plurality of input and output lines that are electrically connected to an external apparatus. At least one input or output line among the plurality of input and output lines is disposed vertically above the temperature detecting element.Type: GrantFiled: July 8, 2015Date of Patent: April 16, 2019Assignee: DENSO CORPORATIONInventor: Toshihiro Takei
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Publication number: 20180062472Abstract: A stator for a rotating electric machine includes an annular stator core and a stator coil. The stator core has a plurality of slots arranged in a circumferential direction thereof. The stator coil is formed of a plurality of electric conductor segments mounted on the stator core. Each of the electric conductor segments has a pair of in-slot portions and a turn portion. Each of the pair of in-slot portions is inserted in a corresponding one of the slots of the stator core. The turn portion is located on one axial side of the stator core and connects the pair of in-slot portions. Moreover, for each of the electric conductor segments, at least one of the pair of in-slot portions of the electric conductor segment includes a protruding part that protrudes in the circumferential direction of the stator core.Type: ApplicationFiled: August 24, 2017Publication date: March 1, 2018Applicant: DENSO CORPORATIONInventor: Toshihiro TAKEI
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Publication number: 20170271937Abstract: A stator includes an annular stator core and a multi-phase stator coil. The stator core has slots arranged in a circumferential direction thereof. The stator coil is comprised of phase windings that are mounted on the stator core so as to be received in the slots of the stator core. The stator coil has an annular coil end part protruding axially outward from an axial end face of the stator core. The stator coil includes, at least, two lead wires and a joint. Each of the lead wires is connected with one of the phase windings of the stator coil and led out from a radially inner periphery of the coil end part. At the joint, distal ends of the lead wires are joined to each other. Adjoining portions of the lead wires, which adjoin each other, are arranged radially inside a radially-inner peripheral surface of the coil end part.Type: ApplicationFiled: March 17, 2017Publication date: September 21, 2017Applicant: DENSO CORPORATIONInventor: Toshihiro TAKEI
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Publication number: 20160013705Abstract: A rotating electric machine includes a rotor, a stator, a temperature detecting element, and a cooling apparatus. The stator includes a stator core that is disposed so as to oppose the rotor in a radial direction of the rotating electric machine, and a stator winding that is wound around the stator core. The temperature detecting element is set in the stator winding. The cooling apparatus drips a liquid coolant onto coil end portions of the stator winding, thereby performing cooling. The stator winding has a plurality of input and output lines that are electrically connected to an external apparatus. At least one input or output line among the plurality of input and output lines is disposed vertically above the temperature detecting element.Type: ApplicationFiled: July 8, 2015Publication date: January 14, 2016Inventor: Toshihiro TAKEI
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Publication number: 20120318013Abstract: An vehicular air-conditioner includes a refrigeration cycle including a compressor, an outside condenser, an interior condenser, an evaporator, an expansion valve, a bypass-path bypassing the outside condenser, a cooling path that circulates refrigerant through the outside condenser, a heating path that circulates refrigerant through the bypass-path, and a changeover valve that changes a refrigerant circulation path to one of the cooling and heating paths, a high-pressure detector that detects a high-pressure-side pressure of the refrigeration cycle, and a controller. The controller controls, upon a changeover command to a heating mode during a cooling mode, the changeover valve to change the refrigerant circulation path from the cooling path to the heating path after the high-pressure-side pressure detected by the high-pressure detector becomes equal-to/lower-than a target pressure.Type: ApplicationFiled: March 2, 2011Publication date: December 20, 2012Applicant: CALSONIC KANSEI CORPORATIONInventors: Masaru Hozumi, Toshihiro Takei
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Publication number: 20120247137Abstract: Provided is an air conditioner for a vehicle which can prevent the controls over cooling cycle and heating cycle from interfering with each other and thereby prevent hunting between the cooling and heating cycles even when a compressor is operated to perform the heating cycle in an overlapping temperature range where air cooling and air heating are both required. An air conditioner (4) for a vehicle includes a refrigerant circulation circuit (9b) for air heating to circulate a refrigerant, and a control unit (29) to selectively perform a normal air conditioning mode in which a normal cooling operation is feasible by circulating the refrigerant through a refrigerant circulation circuit (9a) for air cooling and an auxiliary heating mode in which an auxiliary heating operation is performed by circulating the refrigerant through the refrigerant circulating circuit (9b) for air heating.Type: ApplicationFiled: December 20, 2010Publication date: October 4, 2012Applicant: Calsonic Kansei CorporationInventors: Kazuo Nakajo, Toshihiro Takei, Hiroshi Soma
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Publication number: 20120017637Abstract: Provided is a vehicle air conditioning device with a simple structure which can quickly raise the temperature of engine cooling water used for heating the air in a vehicle cabin in an engine start period in a low ambient temperature. The vehicle air conditioning device comprises the following elements integrally connected with each other: a first water heat exchanger (26) provided in the middle of a passage through which an engine cooling water flows from the water jacket of an engine (3) to a heater core (8a), a second water heat exchanger (27) provided in the middle of a passage through which the engine cooling water flows from the heater core (8a) to the water jacket of the engine (3), and a first external heat exchanger (18) for refrigerant condensation provided between the first and second water heat exchangers (26, 27).Type: ApplicationFiled: January 8, 2010Publication date: January 26, 2012Inventors: Kazuo Nakajo, Toshihiro Takei, Yoshitoshi Noda, Tomohiro Maruyama, Junichiro Hara
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Patent number: 8034473Abstract: A storage battery air-cooling device cools down, by forced air circulation, a heat generation of a storage battery mounted in a vehicle as a driving power source of the vehicle. The device includes a battery case containing the storage battery with a marginal space on an outer circumference; a cool box which can be placed and extracted from a vehicle cabin for refrigerating an object; a pair of ducts communicating a case chamber of the battery case with a box chamber of the cool box to form a closed air circulation path; and a fan being set in a halfway position of the closed air circulation path to drive to forcedly circulate air in the path.Type: GrantFiled: May 7, 2008Date of Patent: October 11, 2011Assignee: Calsonic Kansei CorporationInventor: Toshihiro Takei
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Publication number: 20100092852Abstract: The storage battery air-cooling device which cools down, by enforced air circulation, a heat generation of a storage battery mounted in a vehicle as a driving power source of the vehicle, comprises a battery case containing the storage battery with a marginal space on an outer circumference; a cool box being able to be placed and extracted from a vehicle cabin and refrigerating an object; a pair of ducts communicating a case chamber of the battery case with a box chamber of the cool box to form a closed air circulation path; and a fan being set in a halfway position of the closed air circulation path to drive to enforcedly circulate air in the path.Type: ApplicationFiled: May 7, 2008Publication date: April 15, 2010Inventor: Toshihiro Takei
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Patent number: 5762372Abstract: A seat belt tensioner includes a wire, a spring retainer connected to a seat belt buckle by the wire, a casing within which the spring retainer is linearly movable, a primary coil spring contacting the spring retainer, a leaf spring for limiting movement of the spring retainer, a secondary coil spring, and a mass body supported relative to the spring retainer through the secondary coil spring in the direction in which an inertial force is applied. The mass body is moved against the action of the secondary coil spring when a predetermined deceleration is applied, the mass body slides and the primary coil spring is released.Type: GrantFiled: May 31, 1995Date of Patent: June 9, 1998Assignee: Nippondenso Co., Ltd.Inventors: Mutsumasa Koujiya, Kazuyoshi Isaji, Shinichi Iwai, Yutaka Ohasi, Toshihiro Takei
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Patent number: 5651564Abstract: A tensioning device is provided to realize compactness and simplification of device structure and causes mountability to be improved. A tensioning mechanism to rapidly tension one end of an interconnecting member when deceleration of a vehicle is applied, a reversing-prevention hook plate supported rotatably freely on an arm plate, a buckle joined freely rotatably at a position most proximate to a seat belt in a direction of tension action of the seat belt within a plate surface of the reversing-prevention hook plate, and a reversing-prevention claw to restrict reverse rotation of the reversing-prevention hook plate after the interconnecting member has been pulled out are provided, and a base end of the foregoing arm plate is joined freely rotatably to a frame member.Type: GrantFiled: May 26, 1995Date of Patent: July 29, 1997Assignee: Nippondenso Co., Ltd.Inventors: Kazuyoshi Isaji, Yutaka Ohasi, Mutsumasa Koujiya, Shinichi Iwai, Toshihiro Takei
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Patent number: 5544538Abstract: A vehicular automatic transmission (AT) hydraulic controller has an integrated valve. The integrated valve has a cylindrical cam shaft including convex and concave parts on the outer periphery thereof, and the integrated valve is connected to a motor for automatic control and a connecting part which is interlocked with an external gearshift operated by a driver. Hydraulic control of the integrated valve can be performed in two different ways, i.e., automatic control and manual control, and even if automatic control malfunctions due to an error, manual control can maintain the control of the AT and avoid any inconvenience. The structure of this integrated valve provides a high degree of design freedom and can implement a wide variety of AT functions. Accordingly, a light, compact and reliable AT equipped with both an automatic control mechanism and a manual control mechanism can be provided.Type: GrantFiled: June 3, 1994Date of Patent: August 13, 1996Assignee: Nippondenso Co., Ltd.Inventors: Akira Takagi, Fumiaki Murakami, Masami Fujutsuna, Kazuyuki Natsume, Masaru Suzuki, Toshihiro Takei
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Patent number: 4902075Abstract: A braking apparatus for a vehicle has a booster for receiving, as a pilot pressure, a pressure of a master cylinder and for regulating a pressure from an auxiliary pressure source to a level predetermined times the pilot pressure. The booster is provided with an initial pressure raising mechanism for causing the booster to output a predetermined initial pressure in response to an initial actuation of a brake pedal.Type: GrantFiled: September 21, 1988Date of Patent: February 20, 1990Assignee: Nippondenso Co., Ltd.Inventors: Haruhiko Uno, Yuzo Imoto, Tetuya Izumi, Toshihiro Takei