Patents by Inventor Hiroshi HOSHINA
Hiroshi HOSHINA 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: 11018543Abstract: A method is for manufacturing a stator of a rotary electric machine. The method includes; forming a stator core; forming each of cassette coils by concentrically winding rectangular wire for the specified number of turns, each of the cassette coils being formed by applying a shift amount with respect to an axis in a winding direction to a wire shape of at least one of the turns before being attached to the teeth; attaching each of the cassette coils to each of teeth while canceling the shift amount; and forming a wire coil of the rotary electric machine by connecting a winding terminal of one of the cassette coils to a winding terminal of another of the cassette coils.Type: GrantFiled: April 16, 2019Date of Patent: May 25, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hiroshi Hoshina
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Patent number: 10971960Abstract: A cuff support attached to an axial end surface of a stator core including an annular yoke, a plurality of teeth, and a plurality of slots formed between the teeth includes: an annular plate making contact with the yoke; a plurality of ribs projecting toward an inner peripheral side of the annular plate so as to correspond to the teeth; and a plurality of spaces formed between the ribs so as to correspond to the slots. The cuff support is made of an elastic member. The ribs are being apart from the axial end surface of the stator core from roots of the ribs toward tip ends of the ribs. When a coil is wound around the teeth and the ribs so as to pass through the slots and the spaces, the ribs are brought into pressure contact with the coil due to an elastic force.Type: GrantFiled: March 2, 2018Date of Patent: April 6, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroshi Hoshina, Shotaro Okamoto
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Publication number: 20190245403Abstract: A method is for manufacturing a stator of a rotary electric machine. The method includes; forming a stator core; forming each of cassette coils by concentrically winding rectangular wire for the specified number of turns, each of the cassette coils being formed by applying a shift amount with respect to an axis in a winding direction to a wire shape of at least one of the turns before being attached to the teeth; attaching each of the cassette coils to each of teeth while canceling the shift amount; and forming a wire coil of the rotary electric machine by connecting a winding terminal of one of the cassette coils to a winding terminal of another of the cassette coils.Type: ApplicationFiled: April 16, 2019Publication date: August 8, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hiroshi HOSHINA
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Publication number: 20190245402Abstract: A method is for manufacturing a stator of a rotary electric machine. The method includes; forming a stator core; forming each of cassette coils by concentrically winding rectangular wire for the specified number of turns, each of the cassette coils being formed by applying a shift amount with respect to an axis in a winding direction to a wire shape of at least one of the turns before being attached to the teeth; attaching each of the cassette coils to each of teeth while canceling the shift amount; and forming a wire coil of the rotary electric machine by connecting a winding terminal of one of the cassette coils to a winding terminal of another of the cassette coils.Type: ApplicationFiled: April 16, 2019Publication date: August 8, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hiroshi HOSHINA
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Patent number: 10320256Abstract: A method is for manufacturing a stator of a rotary electric machine. The method includes; forming a stator core; forming each of cassette coils by concentrically winding rectangular wire for the specified number of turns, each of the cassette coils being formed by applying a shift amount with respect to an axis in a winding direction to a wire shape of at least one of the turns before being attached to the teeth; attaching each of the cassette coils to each of teeth while canceling the shift amount; and forming a wire coil of the rotary electric machine by connecting a winding terminal of one of the cassette coils to a winding terminal of another of the cassette coils.Type: GrantFiled: August 8, 2016Date of Patent: June 11, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hiroshi Hoshina
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Publication number: 20180254674Abstract: A cuff support attached to an axial end surface of a stator core including an annular yoke, a plurality of teeth, and a plurality of slots formed between the teeth includes: an annular plate making contact with the yoke; a plurality of ribs projecting toward an inner peripheral side of the annular plate so as to correspond to the teeth; and a plurality of spaces formed between the ribs so as to correspond to the slots. The cuff support is made of an elastic member. The ribs are being apart from the axial end surface of the stator core from roots of the ribs toward tip ends of the ribs. When a coil is wound around the teeth and the ribs so as to pass through the slots and the spaces, the ribs are brought into pressure contact with the coil due to an elastic force.Type: ApplicationFiled: March 2, 2018Publication date: September 6, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroshi HOSHINA, Shotaro OKAMOTO
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Patent number: 9831749Abstract: A stator of a three-phase driving type rotary electric machine has phase coils wound around teeth of a stator core. In a specific slot among a plurality of slots of the stator core in which one phase coil directly connected to a power terminal and another phase coil directly connected to a neutral point are adjacently disposed, an inter-phase distance ensuring member is disposed in a gap via which the two phase coils are adjacent, and a temperature sensor is inserted into an insertion hole provided in the inter-phase distance ensuring member.Type: GrantFiled: September 24, 2015Date of Patent: November 28, 2017Assignee: Toyota Jidosha Kabushiki KaishaInventor: Hiroshi Hoshina
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Publication number: 20170047828Abstract: A method is for manufacturing a stator of a rotary electric machine. The method includes; forming a stator core; forming each of cassette coils by concentrically winding rectangular wire for the specified number of turns, each of the cassette coils being formed by applying a shift amount with respect to an axis in a winding direction to a wire shape of at least one of the turns before being attached to the teeth; attaching each of the cassette coils to each of teeth while canceling the shift amount; and forming a wire coil of the rotary electric machine by connecting a winding terminal of one of the cassette coils to a winding terminal of another of the cassette coils.Type: ApplicationFiled: August 8, 2016Publication date: February 16, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hiroshi HOSHINA
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Publication number: 20160301272Abstract: According to the present invention, a stator for a rotary electric machine includes a stator core, coils of three phases formed of flat-type wire coils wound on the stator core by concentrated winding, neutral point bus bars which are connected to coil terminating ends respectively extending from innermost circumferences of the coils of three phases, and a neutral point formed by joining the neutral point bus bars to each other. The neutral point is formed by joining terminating ends of the three-phase neutral point bus bars to each other in a state in which the terminating ends are arranged adjacent to each other in the circumferential direction.Type: ApplicationFiled: November 14, 2014Publication date: October 13, 2016Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHAInventors: Kentarou HARUNO, Hiroshi HOSHINA, Tatsuya NAKAHO, Isao KATO
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Publication number: 20160254717Abstract: A stator for a rotary electric machine includes a stator core, coils of three phases formed of flat-type wire coils wound around the stator core by concentrated winding, and neutral point bus bars of three phases which are connected to coil terminating ends respectively extending from innermost circumferences of the coils of three phases and are joined together to form a neutral point. Of the neutral point bus bars of three phases, a U-phase neutral point bus bar is shifted radially outward with respect to the innermost circumference of the coil and is thereafter extended outward in the axial direction of the stator, and the neutral point is located radially outward with respect to the innermost circumference of the coil.Type: ApplicationFiled: October 1, 2014Publication date: September 1, 2016Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN SEIKI KABUSHIKI KAISHAInventors: Hiroshi HOSHINA, Isao KATO
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Publication number: 20160094102Abstract: A stator of a three-phase driving type rotary electric machine has phase coils wound around teeth of a stator core. In a specific slot among a plurality of slots of the stator core in which one phase coil directly connected to a power terminal and another phase coil directly connected to a neutral point are adjacently disposed, an inter-phase distance ensuring member is disposed in a gap via which the two phase coils are adjacent, and a temperature sensor is inserted into an insertion hole provided in the inter-phase distance ensuring member.Type: ApplicationFiled: September 24, 2015Publication date: March 31, 2016Inventor: Hiroshi Hoshina
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Patent number: 8519579Abstract: An electric motor has a rotor, stator, and covers. A stator coil is a pre-wound coil inserted into slots of a stator core from its inner side. A no-lead-wire side coil end portion of the stator coil protrudes radially inward. A no-lead-wire side coolant chamber is liquid-tightly defined by the cover covering the no-lead-wire side coil end portion and a seal plate(s) that is attached from or on a radially inner side of the stator core so as to cover an opening between the inner peripheral edge of the cover and the inner peripheral edge of the stator core.Type: GrantFiled: November 17, 2011Date of Patent: August 27, 2013Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Seiki Kabushiki KaishaInventors: Tomohiko Miyamoto, Naoto Koshino, Hiroshi Hoshina, Keiji Takizawa, Ko Hashimoto, Tetsuo Wakita
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Publication number: 20120274163Abstract: A power unit includes a case, a first rotary electric machine arranged inside the case, a second rotary electric machine that is arranged parallel to the first rotary electric machine and that is arranged inside the case, a plurality of conductors that send electric power to the first rotary electric machine and the second rotary electric machine, and that receive electric power from the first rotary electric machine and the second rotary electric machine, and a cover member that covers a single opening provided in the case and communicating an inside of the case with an outside of the case, the plurality of conductors passing through the cover member. A valley shape is formed by an outer peripheral surface of the first rotary electric machine and an outer peripheral surface of the second rotary electric machine. The opening is provided in a portion of the case that faces the valley shape.Type: ApplicationFiled: April 25, 2012Publication date: November 1, 2012Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shinichi Matsumoto, Keiji Takizawa, Hiroshi Hoshina, Yasuhiro Yamaguchi, Masaaki Takemoto
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Publication number: 20120126642Abstract: An electric motor has a rotor, stator, and covers. A stator coil is a pre-wound coil inserted into slots of a stator core from its inner side. A no-lead-wire side coil end portion of the stator coil protrudes radially inward. A no-lead-wire side coolant chamber is liquid-tightly defined by the cover covering the no-lead-wire side coil end portion and a seal plate(s) that is attached from or on a radially inner side of the stator core so as to cover an opening between the inner peripheral edge of the cover and the inner peripheral edge of the stator core.Type: ApplicationFiled: November 17, 2011Publication date: May 24, 2012Applicants: AISIN SEIKI KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tomohiko MIYAMOTO, Naoto KOSHINO, Hiroshi HOSHINA, Keiji TAKIZAWA, Ko HASHIMOTO, Tetsuo WAKITA