Patents by Inventor Kazunori MUTO
Kazunori MUTO 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: 10594195Abstract: A manufacturing method for a stator winding coil includes: a bulging portion forming step that forms a bulging portion on a conductor wire; a crank portion forming step that forms a crank portion on the central portion of the bulging portion; an oblique portion forming step that forms oblique portions on the conductor wire at two ends of the bulging portion; a rectilinear portion forming step that forms rectilinear portions on the conductor wire at opposite ends of the oblique portions from the bulging portion; and a circular arc forming step that forms the oblique portions into a circular arc shape after forming the rectilinear portions.Type: GrantFiled: November 14, 2014Date of Patent: March 17, 2020Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Hironori Tsuiki, Tatsuro Hino, Atsushi Sakaue, Kazunori Muto, Hiroyuki Yasuda, Kohei Egashira, Akira Hashimoto, Hiroyuki Akita
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Patent number: 10439455Abstract: A tooth groove is provided at a border portion between a tooth body portion and a protrusion. The angle between a tooth body portion lateral face which is a lateral face in the circumferential direction of the tooth body portion and a tooth body portion stop portion which is a face, of the tooth groove, continued from the tooth body portion lateral face is the right angle or an acute angle. The protrusion is rotated toward the outer side in the circumferential direction, to bring a protrusion stop portion into close contact with the tooth body portion stop portion, the protrusion stop portion being an outer-circumferential-side lateral face of the protrusion, thereby forming a shoe in a tooth.Type: GrantFiled: December 9, 2015Date of Patent: October 8, 2019Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Aiko Nakano, Atsushi Sakaue, Tatsuro Hino, Kazunori Muto, Yoshihiro Harada, Shinkichi Sawa, Masashi Nakamura
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Patent number: 10170952Abstract: Coils that constitute an armature winding are produced by winding a conductor wire that has a rectangular cross section, the coils each include: four rectilinear portions that are inserted into a pair of slots; and three coil end portions that link the four rectilinear portions consecutively by each connecting together end portions of two selected rectilinear portions, the coils being mounted into the armature core so as to be arranged at a pitch of one slot in a circumferential direction, the coil end portions include: a bulging portion that protrudes axially outward in a convex shape; and oblique portions that link the two connected rectilinear portions and the bulging portion, the bulging portion has a crank portion that displaces radial positions of the two connected rectilinear portions by a set amount, and a cross-sectional area of the bulging portion is smaller than a cross-sectional area of the oblique portions.Type: GrantFiled: February 3, 2015Date of Patent: January 1, 2019Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Kohei Egashira, Atsushi Sakaue, Tatsuro Hino, Kazunori Muto, Hironori Tsuiki
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Patent number: 10164490Abstract: In a rotary electric machine according to the present invention, an armature winding includes a plurality of distributed winding bodies that are each produced by winding a single conductor wire that is insulated, that is jointless and continuous, and that has a constant cross-sectional area perpendicular to a longitudinal direction, the conductor wires include first through third coil end portions that link first through fourth rectilinear portions and first through fourth rectilinear portions, and are formed such that radial widths w? of the first through fourth rectilinear portions are wider than radial widths w of the first through third coil end portions.Type: GrantFiled: June 27, 2014Date of Patent: December 25, 2018Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Hironori Tsuiki, Tatsuro Hino, Atsushi Sakaue, Akira Hashimoto, Kazunori Muto, Masashi Nakamura, Shinkichi Sawa, Hiroyuki Akita
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Publication number: 20170294812Abstract: A tooth groove is provided at a border portion between a tooth body portion and a protrusion. The angle between a tooth body portion lateral face which is a lateral face in the circumferential direction of the tooth body portion and a tooth body portion stop portion which is a face, of the tooth groove, continued from the tooth body portion lateral face is the right angle or an acute angle. The protrusion is rotated toward the outer side in the circumferential direction, to bring a protrusion stop portion into close contact with the tooth body portion stop portion, the protrusion stop portion being an outer-circumferential-side lateral face of the protrusion, thereby forming a shoe in a tooth.Type: ApplicationFiled: December 9, 2015Publication date: October 12, 2017Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Aiko NAKANO, Atsushi SAKAUE, Tatsuro HINO, Kazunori MUTO, Yoshihiro HARADA, Shinkichi SAWA, Masashi NAKAMURA
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Patent number: 9705374Abstract: A radially outer insulating paper includes: an annular radially outer insulating paper base portion that is disposed on a radially inner side of a row of first coil terminals; and radially outer insulating paper protruding portions that each protrude radially outward from an axially outer end portion of the radially outer insulating paper base portion, and that are inserted between adjacent first coil terminals axially further outward than second bent portions; and a radially inner insulating paper includes: an annular radially inner insulating paper base portion that is disposed on a radially outer side of a row of second coil terminals; and radially inner insulating paper protruding portions that each protrude radially inward from an axially outer end portion of the radially inner insulating paper base portion, and that are inserted between adjacent second coil terminals axially further outward than fourth bent portions.Type: GrantFiled: April 28, 2015Date of Patent: July 11, 2017Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Tatsuro Hino, Akihiro Yamamura, Shuichi Tamura, Akira Hashimoto, Tetsuya Yokogawa, Atsushi Sakaue, Kazunori Muto
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Publication number: 20170163133Abstract: A predetermined part of one conductive wire is pressurized and plastically worked to form a slot portion having a desired cross section, a part separated from the slot portion by a predetermined dimension is pressed to form a top portion, and then a part separated from the top portion by a predetermined dimension is plastically worked to form the next slot portion. Through repetition of such steps, a conductive wire in which necessary numbers of slot portions and top portions are formed is manufactured. Using the top portion as a reference, the conductive wire is folded to form a coil end portion and is wound by a plurality of turns into a hexagonal shape, thereby forming a hexagonal coil in which the conductive wire is wound by a predetermined number of turns. In the hexagonal coil, bundles of the slot portions become two opposite sides and are inserted in the slots of the armature.Type: ApplicationFiled: June 16, 2015Publication date: June 8, 2017Applicant: Mitsubishi Electric CorporationInventors: Kohei EGASHIRA, Atsushi SAKAUE, Tatsuro HINO, Kazunori MUTO, Hironori TSUIKI
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Publication number: 20170047808Abstract: A radially outer insulating paper includes: an annular radially outer insulating paper base portion that is disposed on a radially inner side of a row of first coil terminals; and radially outer insulating paper protruding portions that each protrude radially outward from an axially outer end portion of the radially outer insulating paper base portion, and that are inserted between adjacent first coil terminals axially further outward than second bent portions; and a radially inner insulating paper includes: an annular radially inner insulating paper base portion that is disposed on a radially outer side of a row of second coil terminals; and radially inner insulating paper protruding portions that each protrude radially inward from an axially outer end portion of the radially inner insulating paper base portion, and that are inserted between adjacent second coil terminals axially further outward than fourth bent portions.Type: ApplicationFiled: April 28, 2015Publication date: February 16, 2017Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Tatsuro HINO, Akihiro YAMAMURA, Shuichi TAMURA, Akira HASHIMOTO, Tetsuya YOKOGAWA, Atsushi SAKAUE, Kazunori MUTO
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Publication number: 20160372992Abstract: A manufacturing method for a stator winding coil includes: a bulging portion forming step that forms a bulging portion on a conductor wire; a crank portion forming step that forms a crank portion on the central portion of the bulging portion; an oblique portion forming step that forms oblique portions on the conductor wire at two ends of the bulging portion; a rectilinear portion forming step that forms rectilinear portions on the conductor wire at opposite ends of the oblique portions from the bulging portion; and a circular arc forming step that forms the oblique portions into a circular arc shape after forming the rectilinear portions.Type: ApplicationFiled: November 14, 2014Publication date: December 22, 2016Applicant: Mitsubishi Electric CorporationInventors: Hironori TSUIKI, Tatsuro HINO, Atsushi SAKAUE, Kazunori MUTO, Hiroyuki YASUDA, Kohei EGASHIRA, Akira HASHIMOTO, Hiroyuki AKITA
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Publication number: 20160352169Abstract: Coils that constitute an armature winding are produced by winding a conductor wire that has a rectangular cross section, the coils each include: four rectilinear portions that are inserted into a pair of slots; and three coil end portions that link the four rectilinear portions consecutively by each connecting together end portions of two selected rectilinear portions, the coils being mounted into the armature core so as to be arranged at a pitch of one slot in a circumferential direction, the coil end portions include: a bulging portion that protrudes axially outward in a convex shape; and oblique portions that link the two connected rectilinear portions and the bulging portion, the bulging portion has a crank portion that displaces radial positions of the two connected rectilinear portions by a set amount, and a cross-sectional area of the bulging portion is smaller than a cross-sectional area of the oblique portions.Type: ApplicationFiled: February 3, 2015Publication date: December 1, 2016Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Kohei EGASHIRA, Atsushi SAKAUE, Tatsuro HINO, Kazunori MUTO, Hironori TSUIKI
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Publication number: 20160261159Abstract: In a rotary electric machine according to the present invention, an armature winding includes a plurality of distributed winding bodies that are each produced by winding a single conductor wire that is insulated, that is jointless and continuous, and that has a constant cross-sectional area perpendicular to a longitudinal direction, the conductor wires include first through third coil end portions that link first through fourth rectilinear portions and first through fourth rectilinear portions, and are formed such that radial widths w? of the first through fourth rectilinear portions are wider than radial widths w of the first through third coil end portions.Type: ApplicationFiled: June 27, 2014Publication date: September 8, 2016Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Hironori TSUIKI, Tatsuro HINO, Atsushi SAKAUE, Akira HASHIMOTO, Kazunori MUTO, Masashi NAKAMURA, Shinkichi SAWA, Hiroyuki AKITA