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).

  • Publication number: 20240120780
    Abstract: 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: Application
    Filed: October 9, 2023
    Publication date: April 11, 2024
    Inventors: Keiji KONDO, Toshihiro TAKEI, Atsushi UMEDA, Hirotaka KUROZAKI
  • Patent number: 11545859
    Abstract: 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: Grant
    Filed: April 28, 2021
    Date of Patent: January 3, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yukio Tsuchiya, Akihide Takehara, Toshihiro Takei, So Akimori
  • Publication number: 20220385132
    Abstract: 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: Application
    Filed: May 31, 2022
    Publication date: December 1, 2022
    Applicant: DENSO CORPORATION
    Inventor: Toshihiro TAKEI
  • Publication number: 20210376671
    Abstract: 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: Application
    Filed: April 28, 2021
    Publication date: December 2, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yukio TSUCHIYA, Akihide TAKEHARA, Toshihiro TAKEI, So AKIMORI
  • Publication number: 20210057971
    Abstract: 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: Application
    Filed: August 20, 2020
    Publication date: February 25, 2021
    Applicant: DENSO CORPORATION
    Inventors: Hiroaki TAKEDA, Toshihiro TAKEI
  • Patent number: 10574106
    Abstract: 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: Grant
    Filed: August 24, 2017
    Date of Patent: February 25, 2020
    Assignee: DENSO CORPORATION
    Inventor: Toshihiro Takei
  • Patent number: 10348148
    Abstract: 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: Grant
    Filed: March 17, 2017
    Date of Patent: July 9, 2019
    Assignee: DENSO CORPORATION
    Inventor: Toshihiro Takei
  • Patent number: 10263498
    Abstract: 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: Grant
    Filed: July 8, 2015
    Date of Patent: April 16, 2019
    Assignee: DENSO CORPORATION
    Inventor: Toshihiro Takei
  • Publication number: 20180062472
    Abstract: 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: Application
    Filed: August 24, 2017
    Publication date: March 1, 2018
    Applicant: DENSO CORPORATION
    Inventor: Toshihiro TAKEI
  • Publication number: 20170271937
    Abstract: 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: Application
    Filed: March 17, 2017
    Publication date: September 21, 2017
    Applicant: DENSO CORPORATION
    Inventor: Toshihiro TAKEI
  • Publication number: 20160013705
    Abstract: 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: Application
    Filed: July 8, 2015
    Publication date: January 14, 2016
    Inventor: Toshihiro TAKEI
  • Publication number: 20120318013
    Abstract: 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: Application
    Filed: March 2, 2011
    Publication date: December 20, 2012
    Applicant: CALSONIC KANSEI CORPORATION
    Inventors: Masaru Hozumi, Toshihiro Takei
  • Publication number: 20120247137
    Abstract: 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: Application
    Filed: December 20, 2010
    Publication date: October 4, 2012
    Applicant: Calsonic Kansei Corporation
    Inventors: Kazuo Nakajo, Toshihiro Takei, Hiroshi Soma
  • Publication number: 20120017637
    Abstract: 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: Application
    Filed: January 8, 2010
    Publication date: January 26, 2012
    Inventors: Kazuo Nakajo, Toshihiro Takei, Yoshitoshi Noda, Tomohiro Maruyama, Junichiro Hara
  • Patent number: 8034473
    Abstract: 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: Grant
    Filed: May 7, 2008
    Date of Patent: October 11, 2011
    Assignee: Calsonic Kansei Corporation
    Inventor: Toshihiro Takei
  • Publication number: 20100092852
    Abstract: 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: Application
    Filed: May 7, 2008
    Publication date: April 15, 2010
    Inventor: Toshihiro Takei
  • Patent number: 5762372
    Abstract: 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: Grant
    Filed: May 31, 1995
    Date of Patent: June 9, 1998
    Assignee: Nippondenso Co., Ltd.
    Inventors: Mutsumasa Koujiya, Kazuyoshi Isaji, Shinichi Iwai, Yutaka Ohasi, Toshihiro Takei
  • Patent number: 5651564
    Abstract: 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: Grant
    Filed: May 26, 1995
    Date of Patent: July 29, 1997
    Assignee: Nippondenso Co., Ltd.
    Inventors: Kazuyoshi Isaji, Yutaka Ohasi, Mutsumasa Koujiya, Shinichi Iwai, Toshihiro Takei
  • Patent number: 5544538
    Abstract: 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: Grant
    Filed: June 3, 1994
    Date of Patent: August 13, 1996
    Assignee: Nippondenso Co., Ltd.
    Inventors: Akira Takagi, Fumiaki Murakami, Masami Fujutsuna, Kazuyuki Natsume, Masaru Suzuki, Toshihiro Takei
  • Patent number: 4902075
    Abstract: 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: Grant
    Filed: September 21, 1988
    Date of Patent: February 20, 1990
    Assignee: Nippondenso Co., Ltd.
    Inventors: Haruhiko Uno, Yuzo Imoto, Tetuya Izumi, Toshihiro Takei