Patents by Inventor KEIICHIRO NUKADA
KEIICHIRO NUKADA 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: 20230019262Abstract: Provided is a coil including first and second lead parts, and a winding part. The winding part includes first to n-th turns. The winding part includes first and second coil ends. The first lead part extends from the first turn to the n-th turn along an upper surface of the first coil end. The second lead part extends from the n-th turn. The first and second lead parts include respective ends that are equal in height from the upper surface of the first coil end when viewed from a radial direction, and are equidistant from the n-th turn when viewed from an axial direction.Type: ApplicationFiled: December 3, 2020Publication date: January 19, 2023Inventors: HIROKAZU YAMAUCHI, YASUAKI MATSUSHITA, KEIICHIRO NUKADA
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Patent number: 11489387Abstract: A coil includes: a series of turns constituted by a first turn to an n-th turn of a conductive wire having a polygonal cross-section, where n is an integer equal to or larger than 3, and the conductive wire is wound in a spiral shape and is stacked in a direction from downward toward upward; and an insulating member disposed on either an upper surface or a lower surface of an i-th turn, where i is an integer satisfying 1?i?n.Type: GrantFiled: March 28, 2018Date of Patent: November 1, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Mitsuoki Hishida, Yuichi Yoshikawa, Hirokazu Yamauchi, Keiichiro Nukada
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Patent number: 11223260Abstract: The invention provides a coil molding attached to a stator of a motor, the coil molding including a coil wound around each of teeth of the stator, and a bus bar connected to the coil and molded integrally with the coil. The invention also provides another coil molding attached to a stator of a motor, the coil molding including a set of coils wound respectively around a plurality of teeth of the stator, the set of coils being molded integrally with each other.Type: GrantFiled: November 2, 2017Date of Patent: January 11, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yuichi Yoshikawa, Keiichiro Nukada, Hirokazu Yamauchi, Mitsuoki Hishida
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Patent number: 11196312Abstract: A motor includes a stator including a stator core and teeth respectively protruding from the stator core in predetermined directions of protrusion, and coils respectively wound onto the teeth n (n is an integer of 3 or greater) turns including first to n-th turns. A k-th (k is an integer, 1<k<n) turn of each of the coils lies at a center of a range wound with each of the coils onto the teeth in a corresponding one of the directions of protrusion of the teeth from the stator core. Each of the first turn and the n-th turn when each of the coils is cut in a corresponding one of the directions of protrusion of the teeth is greater in cross-sectional area than the k-th turn.Type: GrantFiled: February 9, 2018Date of Patent: December 7, 2021Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yuichi Yoshikawa, Keiichiro Nukada, Hirokazu Yamauchi, Mitsuoki Hishida, Yasushi Kato
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Patent number: 11190073Abstract: A motor includes a stator including a stator core and teeth respectively protruding from the stator core, and coils respectively wound onto the teeth n (n is an integer of 1 or greater) turns including first to n-th turns. The coils are each made from a conductive member having a polygonal cross section. On a cross section obtained when one of the coils is cut in a corresponding one of directions of protrusion of the teeth from the stator core, the one of the coils includes a recess on at least either a first opposing surface representing an opposing surface to a corresponding one of the teeth or a second opposing surface representing an opposing surface to another one of the coils, which is wound onto adjacent one of the teeth. A space allowing refrigerant used for cooling the coils to pass through is provided between the recess and at least either the first opposing surface or the second opposing surface.Type: GrantFiled: December 20, 2017Date of Patent: November 30, 2021Assignee: PANASONIC INIELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Mitsuoki Hishida, Yuichi Yoshikawa, Hirokazu Yamauchi, Keiichiro Nukada
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Publication number: 20210359566Abstract: A stator includes a yoke, teeth connected to the yoke, and coils including plate-shaped conductive wire and mounted on respective teeth. Each coil includes a wound part, a first and second terminals. The wound part is wound around the tooth n turns (n is an integer equal to or greater than 2). The wound part satisfies a relationship represented by Ak<Bk, where Ak is a height of a first section in an axial direction of the tooth, and Bk is a width of a second section in a circumferential direction of the tooth. The first and second sections are sections in k-th turn (k is an integer that satisfies 1?k?n) of the coil. The first section is along an axial end surface of the tooth. The second section extends from an end of the first section along a circumferential end surface of the tooth.Type: ApplicationFiled: September 3, 2019Publication date: November 18, 2021Inventors: Keiichiro NUKADA, Toshiyuki TAMAMURA, Yuya MAEDA
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Patent number: 11174010Abstract: A flying device includes a plurality of rotary vanes, a motor element serving as a driving source for each of the plurality of rotary vanes, the motor element driving and rotating a main shaft of the rotary vanes, and a drive circuit. The motor element includes a stator, a rotor, and a pair of bearings. The stator includes a stator core having an annular yoke and a plurality of teeth projecting inward from the annular yoke, and stator windings wound respectively around the plurality of teeth of the stator core. The rotor includes a permanent magnet of a cylindrical shape located inside the stator core via a gap, the permanent magnet being positioned counter to the plurality of teeth, a rotor yoke in contact with a cylindrical inner wall surface of the permanent magnet, and a shaft pivotally supported at an axis of the rotor yoke, the shaft being connected to the main shaft.Type: GrantFiled: October 13, 2017Date of Patent: November 16, 2021Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Shinichi Tsutsumi, Yuichi Yoshikawa, Sho Koyama, Keiichiro Nukada, Hiroshi Ueda, Yuki Nakade
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Publication number: 20210249924Abstract: A motor includes a stator and a rotor at a predetermined distance from the stator. The stator includes an annular yoke, a plurality of teeth connected to the inner circumference of the yoke, and a plurality of coils each wound around an associated one of the teeth. Each coil has coil ends at both ends in an axial direction. At least one of the coil ends has, in an end surface thereof in the axial direction, a first recess extending along the radius of the stator. The first recess houses a first wiring member connecting the coils together.Type: ApplicationFiled: August 30, 2019Publication date: August 12, 2021Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Toshiyuki Tamamura, Kiyomi Kawamura, Keiichiro Nukada
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Patent number: 11070103Abstract: A motor includes a stator core, teeth respectively protruding from the stator core, and coils respectively wound onto the teeth n (n is an integer of 2 or greater) turns including first to n-th turns. Within each of ranges respectively wound with the coils onto the teeth in directions of protrusion of the teeth from the stator core, the first turn of each of the coil lies adjacent to a center of the motor. A k-th (k is an integer, 1<k?n) turn of each of the coils lies opposite to the center of the motor. The first turn when each of the coils is cut in a corresponding one of the directions of protrusion of the teeth from the stator core is greater in cross-sectional area than each of the k-th turn and the n-th turn.Type: GrantFiled: December 20, 2017Date of Patent: July 20, 2021Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yasushi Kato, Yuichi Yoshikawa, Hirokazu Yamauchi, Keiichiro Nukada, Mitsuoki Hishida
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Patent number: 10992198Abstract: A motor includes a stator including a stator core and teeth respectively protruding from the stator core, and coils respectively wound onto the teeth n (n is an integer of 3 or greater) turns. In a cross section in a first direction representing each of directions of protrusion of the teeth from the stator core, a k-th (k is an integer, 1<k<n) turn of each of the coils lies at a center of a range wound with each of the coils onto the teeth in the first direction. The k-th turn of each of the coils is greater in cross-sectional area than each of a first turn and an n-th turn.Type: GrantFiled: November 7, 2017Date of Patent: April 27, 2021Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTDInventors: Yuichi Yoshikawa, Keiichiro Nukada, Yasushi Kato, Hirokazu Yamauchi, Mitsuoki Hishida
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Patent number: 10965198Abstract: A coil includes a series of turns constituted by a first turn to an n-th turn of a conductive wire having a quadrangular cross-section, where the conductive wire is wound in a spiral shape and is stacked in a vertical direction, and n is an integer equal to or greater than 3. In addition, at least a part of the conductive wire of the first turn to the n-th turn is provided with a deformed part whose shape is different from shapes of the other parts. Further, the first turn and the n-th turn are on the both end parts of the series of turns. In addition, at each of the first turn and the n-th turn, the deformed part makes an outer surface positioned on an opposite side with respect to a center of the series of turns extend in a flush manner along a plane intersecting the series of turns.Type: GrantFiled: January 29, 2018Date of Patent: March 30, 2021Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Mitsuoki Hishida, Yuichi Yoshikawa, Hirokazu Yamauchi, Keiichiro Nukada
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Patent number: 10938263Abstract: The invention provides a connection structure between a coil and a bus bar attached to a stator of a motor, and the coil and the bus bar each include a lead part. At least one of the lead parts has a distal end provided with a corner cut away to be stepped to configure a stepped portion having a side surface extending substantially in parallel with a longitudinal direction of the lead part. The coil and the bus bar are connected to each other in a state where the side surface of the stepped portion of a first one of the lead parts is in contact with a second one of the lead parts.Type: GrantFiled: November 2, 2017Date of Patent: March 2, 2021Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Mitsuoki Hishida, Hirokazu Yamauchi, Yuichi Yoshikawa, Keiichiro Nukada
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Publication number: 20200235628Abstract: A motor includes a stator core, teeth respectively protruding from the stator core, and coils respectively wound onto the teeth n (n is an integer of 2 or greater) turns including first to n-th turns. Within each of ranges respectively wound with the coils onto the teeth in directions of protrusion of the teeth from the stator core, the first turn of each of the coil lies adjacent to a center of the motor. A k-th (k is an integer, 1<k?n) turn of each of the coils lies opposite to the center of the motor. The first turn when each of the coils is cut in a corresponding one of the directions of protrusion of the teeth from the stator core is greater in cross-sectional area than each of the k-th turn and the n-th turn.Type: ApplicationFiled: December 20, 2017Publication date: July 23, 2020Inventors: YASUSHI KATO, YUICHI YOSHIKAWA, HIROKAZU YAMAUCHI, KEIICHIRO NUKADA, MITSUOKI HISHIDA
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Publication number: 20200235625Abstract: A motor includes a stator including a stator core and teeth respectively protruding from the stator core, and coils respectively wound onto the teeth n (n is an integer of 1 or greater) turns including first to n-th turns. The coils are each made from a conductive member having a polygonal cross section. On a cross section obtained when one of the coils is cut in a corresponding one of directions of protrusion of the teeth from the stator core, the one of the coils includes a recess on at least either a first opposing surface representing an opposing surface to a corresponding one of the teeth or a second opposing surface representing an opposing surface to another one of the coils, which is wound onto adjacent one of the teeth. A space allowing refrigerant used for cooling the coils to pass through is provided between the recess and at least either the first opposing surface or the second opposing surface.Type: ApplicationFiled: December 20, 2017Publication date: July 23, 2020Inventors: MITSUOKI HISHIDA, YUICHI YOSHIKAWA, HIROKAZU YAMAUCHI, KEIICHIRO NUKADA
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Publication number: 20200212770Abstract: The invention provides a coil molding attached to a stator of a motor, the coil molding including a coil wound around each of teeth of the stator, and a bus bar connected to the coil and molded integrally with the coil. The invention also provides another coil molding attached to a stator of a motor, the coil molding including a set of coils wound respectively around a plurality of teeth of the stator, the set of coils being molded integrally with each other.Type: ApplicationFiled: November 2, 2017Publication date: July 2, 2020Inventors: YUICHI YOSHIKAWA, KEIICHIRO NUKADA, HIROKAZU YAMAUCHI, MITSUOKI HISHIDA
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Publication number: 20200195075Abstract: A coil includes: a series of turns constituted by a first turn to an n-th turn of a conductive wire having a polygonal cross-section, where n is an integer equal to or larger than 3, and the conductive wire is wound in a spiral shape and is stacked in a direction from downward toward upward; and an insulating member disposed on either an upper surface or a lower surface of an i-th turn, where i is an integer satisfying 1?i?n.Type: ApplicationFiled: March 28, 2018Publication date: June 18, 2020Inventors: MITSUOKI HISHIDA, YUICHI YOSHIKAWA, HIROKAZU YAMAUCHI, KEIICHIRO NUKADA
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Publication number: 20200044503Abstract: A motor includes a stator including a stator core and teeth respectively protruding from the stator core, and coils respectively wound onto the teeth n (n is an integer of 3 or greater) turns. In a cross section in a first direction representing each of directions of protrusion of the teeth from the stator core, a k-th (k is an integer, 1<k<n) turn of each of the coils lies at a center of a range wound with each of the coils onto the teeth in the first direction. The k-th turn of each of the coils is greater in cross-sectional area than each of a first turn and an n-th turn.Type: ApplicationFiled: November 7, 2017Publication date: February 6, 2020Inventors: YUICHI YOSHIKAWA, KEIICHIRO NUKADA, YASUSHI KATO, HIROKAZU YAMAUCHI, MITSUOKI HISHIDA
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Publication number: 20200036270Abstract: A coil includes a series of turns constituted by a first turn to an n-th turn of a conductive wire having a quadrangular cross-section, where the conductive wire is wound in a spiral shape and is stacked in a vertical direction, and n is an integer equal to or greater than 3. In addition, at least a part of the conductive wire of the first turn to the n-th turn is provided with a deformed part whose shape is different from shapes of the other parts. Further, the first turn and the n-th turn are on the both end parts of the series of turns. In addition, at each of the first turn and the n-th turn, the deformed part makes an outer surface positioned on an opposite side with respect to a center of the series of turns extend in a flush manner along a plane intersecting the series of turns.Type: ApplicationFiled: January 29, 2018Publication date: January 30, 2020Inventors: MITSUOKI HISHIDA, YUICHI YOSHIKAWA, HIROKAZU YAMAUCHI, KEIICHIRO NUKADA
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Publication number: 20200006993Abstract: A motor includes a stator including a stator core and teeth respectively protruding from the stator core in predetermined directions of protrusion, and coils respectively wound onto the teeth n (n is an integer of 3 or greater) turns including first to n-th turns. A k-th (k is an integer, 1<k<n) turn of each of the coils lies at a center of a range wound with each of the coils onto the teeth in a corresponding one of the directions of protrusion of the teeth from the stator core. Each of the first turn and the n-th turn when each of the coils is cut in a corresponding one of the directions of protrusion of the teeth is greater in cross-sectional area than the k-th turn.Type: ApplicationFiled: February 9, 2018Publication date: January 2, 2020Inventors: YUICHI YOSHIKAWA, KEIICHIRO NUKADA, HIROKAZU YAMAUCHI, MITSUOKI HISHIDA, YASUSHI KATO
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Publication number: 20190348886Abstract: The invention provides a connection structure between a coil and a bus bar attached to a stator of a motor, and the coil and the bus bar each include a lead part. At least one of the lead parts has a distal end provided with a corner cut away to be stepped to configure a stepped portion having a side surface extending substantially in parallel with a longitudinal direction of the lead part. The coil and the bus bar are connected to each other in a state where the side surface of the stepped portion of a first one of the lead parts is in contact with a second one of the lead parts.Type: ApplicationFiled: November 2, 2017Publication date: November 14, 2019Inventors: MITSUOKI HISHIDA, HIROKAZU YAMAUCHI, YUICHI YOSHIKAWA, KEIICHIRO NUKADA