Patents by Inventor Norihiro Murata
Norihiro Murata 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: 11843289Abstract: In a method for manufacturing a core element which is used for a divisional layer stack core of a rotary electric machine, the method includes: a first punch cutting out process for punch cutting out a first core element having a product shape, from a belt like electromagnetic steel sheet, with a press mechanism which has a feeding device of the electromagnetic steel sheet, a feeding process for feeding the electromagnetic steel sheet, with the feeding device, and a second punch cutting out process for positioning with a product shaped pilot which has an external shape of the core element, using a punch cut out trace shape of the first core element, and producing a second core element having the product shape, by punch cutting out with the press mechanism.Type: GrantFiled: June 17, 2021Date of Patent: December 12, 2023Assignee: Mitsubishi Electric CorporationInventors: Akihito Mori, Naoya Hashimoto, Kiyoshi Nakano, Kazuya Hasegawa, Norihiro Murata, Tomoyuki Kinoshita, Kensaku Kuroki
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Publication number: 20230129627Abstract: A manufacturing method for a laminated core of a rotating electric machine includes a laminating step and a core separating step. In the laminating step, a plurality of core elements are laminated, thereby forming an element laminate. In the core separating step, under a state in which the element laminate is pressed in a lamination direction of the plurality of core elements, a part of the element laminate is moved from the element laminate in a direction orthogonal to the lamination direction by a set dimension in the lamination direction, thereby obtaining a separated laminate.Type: ApplicationFiled: April 25, 2022Publication date: April 27, 2023Applicant: Mitsubishi Electric CorporationInventors: Akihito MORI, Kota HIROHASHI, Kazuya HASEGAWA, Tomoyuki KINOSHITA, Norihiro MURATA, Kimiyasu FURUSAWA, Masahiro YUYA
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Patent number: 11569700Abstract: To obtain a rotating electric machine capable of downsizing the rotating electric machine in an axial direction and in a radial direction. A first inner-peripheral-side terminal includes a first conductor-exposed portion and a second inner-peripheral-side terminal includes a second conductor-exposed portion opposed to the first conductor-exposed portion. An opposing portion being a portion, at which the first conductor-exposed portion and the second conductor-exposed portion are opposed to each other, extends in a radial direction, and at least a part of the opposing portion of the first conductor-exposed portion and the second conductor-exposed portion is arranged on an inner side in the radial direction compared to the first outer-peripheral-side terminal and the second outer-peripheral-side terminal.Type: GrantFiled: October 28, 2020Date of Patent: January 31, 2023Assignee: Mitsubishi Electric CorporationInventors: Tatsuro Hino, Kohei Egashira, Shinya Matsunaga, Yasuhiro Hayasaka, Norihiro Murata, Kazuya Hasegawa, Katsuya Ito
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Publication number: 20220209593Abstract: An outer-circumferential side of a core-back portion of a stator iron core has a welding portion that is provided in such a way as to ride on two or more electromagnetic steel plates including electromagnetic steel plates situated at a stacking-direction end portion of the stator iron core; the welding portion is provided partly in the stacking-direction of the stator iron core.Type: ApplicationFiled: October 2, 2019Publication date: June 30, 2022Applicant: Mitsubishi Electric CorporationInventors: Tomoyuki KINOSHITA, Tatsuro HINO, Kouta KATSURAGI, Satoshi EKINO, Kazuya HASEGAWA, Norihiro MURATA, Akihito MORI
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Publication number: 20220109354Abstract: In a method for manufacturing a core element which is used for a divisional layer stack core of a rotary electric machine, the method includes: a first punch cutting out process for punch cutting out a first core element having a product shape, from a belt like electromagnetic steel sheet, with a press mechanism which has a feeding device of the electromagnetic steel sheet, a feeding process for feeding the electromagnetic steel sheet, with the feeding device, and a second punch cutting out process for positioning with a product shaped pilot which has an external shape of the core element, using a punch cut out trace shape of the first core element, and producing a second core element having the product shape, by punch cutting out with the press mechanism.Type: ApplicationFiled: June 17, 2021Publication date: April 7, 2022Applicant: Mitsubishi Electric CorporationInventors: Akihito MORI, Naoya HASHIMOTO, Kiyoshi NAKANO, Kazuya HASEGAWA, Norihiro MURATA, Tomoyuki KINOSHITA, Kensaku KUROKI
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Publication number: 20210184526Abstract: To obtain a rotating electric machine capable of downsizing the rotating electric machine in an axial direction and in a radial direction. A first inner-peripheral-side terminal includes a first conductor-exposed portion and a second inner-peripheral-side terminal includes a second conductor-exposed portion opposed to the first conductor-exposed portion. An opposing portion being a portion, at which the first conductor-exposed portion and the second conductor-exposed portion are opposed to each other, extends in a radial direction, and at least a part of the opposing portion of the first conductor-exposed portion and the second conductor-exposed portion is arranged on an inner side in the radial direction compared to the first outer-peripheral-side terminal and the second outer-peripheral-side terminal.Type: ApplicationFiled: October 28, 2020Publication date: June 17, 2021Applicant: Mitsubishi Electric CorporationInventors: Tatsuro HINO, Kohei EGASHIRA, Shinya MATSUNAGA, Yasuhiro HAYASAKA, Norihiro MURATA, Kazuya HASEGAWA, Katsuya ITO
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Patent number: 9246366Abstract: A winding assembly includes: slot-housed portions housed inside each of the slots of the stator core so as to form pairs that line up in an inner layer and an outer layer relative to a slot depth direction; first return portions at a first axial end of the stator core that link end portions of the slot-housed portions housed in the inner layer inside each of the slots and end portions of the slot-housed portions housed in the outer layer inside the slots that are (N?M) slots away; and second return portions at a second axial end of the stator core that link end portions of the slot-housed portions housed in the outer layer inside each of the slots and end portions of the slot-housed portions housed in the inner layer inside the slots that are (N+M) slots away.Type: GrantFiled: December 24, 2010Date of Patent: January 26, 2016Assignee: Mitsubishi Electric CorporationInventors: Yoshiro Imazawa, Kazunori Tanaka, Kazuya Hasegawa, Norihiro Murata, Hiroshi Hosokawa, Shinji Nishimura
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Publication number: 20130241369Abstract: A winding assembly includes: slot-housed portions housed inside each of the slots of the stator core so as to form pairs that line up in an inner layer and an outer layer relative to a slot depth direction; first return portions at a first axial end of the stator core that link end portions of the slot-housed portions housed in the inner layer inside each of the slots and end portions of the slot-housed portions housed in the outer layer inside the slots that are (N?M) slots away; and second return portions at a second axial end of the stator core that link end portions of the slot-housed portions housed in the outer layer inside each of the slots and end portions of the slot-housed portions housed in the inner layer inside the slots that are (N+M) slots away.Type: ApplicationFiled: December 24, 2010Publication date: September 19, 2013Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Yoshiro Imazawa, Kazunori Tanaka, Kazuya Hasegawa, Norihiro Murata, Hiroshi Hosokawa, Shinji Nishimura
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Patent number: 8148864Abstract: A dynamoelectric machine includes first and second magnet seat portions disposed to project from portions of first and second yoke portions that face respective inner circumferential surfaces near tip ends of second and first claw-shaped magnetic pole portions, and magnet housing portions disposed integrally to extend axially outward from outer circumferential portions of a pair of flange portions of a bobbin, extend near the first and second yoke portions that face the inner circumferential surfaces near the tip ends of the first and second claw-shaped magnetic pole portions, and be held by the first and second magnet seat portions.Type: GrantFiled: March 26, 2008Date of Patent: April 3, 2012Assignee: Mitsubishi Electric CorporationInventors: Toshiyuki Yoshizawa, Masaya Inoue, Kanji Shinkawa, Masao Morita, Moriyuki Hazeyama, Hiroyuki Akita, Shinji Nishimura, Norihiro Murata
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Publication number: 20100207476Abstract: A dynamoelectric machine includes first and second magnet seat portions disposed to project from portions of first and second yoke portions that face respective inner circumferential surfaces near tip ends of second and first claw-shaped magnetic pole portions, and magnet housing portions disposed integrally to extend axially outward from outer circumferential portions of a pair of flange portions of a bobbin, extend near the first and second yoke portions that face the inner circumferential surfaces near the tip ends of the first and second claw-shaped magnetic pole portions, and be held by the first and second magnet seat portions.Type: ApplicationFiled: March 26, 2008Publication date: August 19, 2010Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Toshiyuki Yoshizawa, Masaya Inoue, Kanji Shinkawa, Masao Morita, Moriyuki Hazeyama, Hiroyuki Akita, Shinji Nishimura, Norihiro Murata
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Patent number: 7770286Abstract: A manufacturing method of a winding assembly of a rotating electrical machine using a rotation block and a fixed block and a manufacturing apparatus used for the same. The rotation block includes a rotation surface rotatable around a rotation axis, and the fixed block includes a first surface and a second surface opposite to each other and a shaping surface. The shaping surface is formed between end parts of the first and the second surfaces, is made to have an almost semicircular shape with the rotation axis as the center, and extends along the rotation axis. Plural wire rods are simultaneously fed from the first surface of the fixed block to the rotation surface of the rotation block, and the wire rods positioned on the rotation surface are bent by rotation of the rotation block.Type: GrantFiled: January 15, 2008Date of Patent: August 10, 2010Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Yutaka Hirota, Norihiro Murata, Toshiaki Kashihara
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Patent number: 7656069Abstract: First and second magnet holding apertures are disposed through first and second permanent magnet holding seats that are disposed so as to protrude from first and second yoke portions so as to have aperture centers that are oriented in an axial direction. Cylindrical resin first and second magnet loading portions are disposed so as to project integrally on first and second fans such that central axes thereof are oriented in the axial direction, and first and second permanent magnets are insert-molded into the first and second magnet loading portions. The first and second fans are fixed to first and second pole cores by fitting the first and second magnet loading portions together with the first and second magnet holding apertures.Type: GrantFiled: July 1, 2008Date of Patent: February 2, 2010Assignee: Mitsubishi Electric CorporationInventors: Kanji Shinkawa, Masaya Inoue, Hiroyuki Akita, Norihiro Murata, Toshiyuki Yoshizawa, Shinji Nishimura
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Patent number: 7624493Abstract: There are proposed a manufacturing method of a winding assembly of a rotating electrical machine using a rotation block and a fixed block and a manufacturing apparatus used for the same. The rotation block includes a rotation surface rotatable around a rotation axis, and the fixed block includes a first surface and a second surface opposite to each other and a shaping surface. The shaping surface is formed between end parts of the first and the second surfaces, is made to have an almost semicircular shape with the rotation axis as the center, and extends along the rotation axis. Plural wire rods are simultaneously fed from the first surface of the fixed block to the rotation surface of the rotation block, and the wire rods positioned on the rotation surface are bent by rotation of the rotation block.Type: GrantFiled: January 15, 2008Date of Patent: December 1, 2009Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Yutaka Hirota, Norihiro Murata, Toshiaki Kashihara
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Patent number: 7560851Abstract: A dynamoelectric machine includes: a permanent magnet holding portion that is disposed integrally so as to project from the yoke portion on a portion of the pair of yoke portions that faces an inner circumferential surface near a tip end of the plurality of claw-shaped magnetic pole portions; an arc-shaped magnet holding aperture that has a C-shaped cross section that is formed in each of the permanent magnet holding portions so as to have an aperture center that is oriented axially, in which at least one axial end is open, and that opens radially outward; a magnet holding member that is made of a nonmagnetic material that is fitted into and held by the magnet holding aperture; and a permanent magnet that is held by the magnet holding member so as to face the inner circumferential surface near the tip end of the claw-shaped magnetic pole portions, that is prepared into a prismatic body that has a quadrilateral cross section perpendicular to an axial direction, and that is magnetically oriented in a reverse diType: GrantFiled: June 18, 2008Date of Patent: July 14, 2009Assignee: Mitsubishi Electric CorporationInventors: Masaya Inoue, Kanji Shinkawa, Shinji Nishimura, Hiroyuki Akita, Toshiyuki Yoshizawa, Moriyuki Hazeyama, Norihiro Murata, Masao Morita
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Publication number: 20090009021Abstract: First and second magnet holding apertures are disposed through first and second permanent magnet holding seats that are disposed so as to protrude from first and second yoke portions so as to have aperture centers that are oriented in an axial direction. Cylindrical resin first and second magnet loading portions are disposed so as to project integrally on first and second fans such that central axes thereof are oriented in the axial direction, and first and second permanent magnets are insert-molded into the first and second magnet loading portions. The first and second fans are fixed to first and second pole cores by fitting the first and second magnet loading portions together with the first and second magnet holding apertures.Type: ApplicationFiled: July 1, 2008Publication date: January 8, 2009Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Kanji Shinkawa, Masaya Inoue, Hiroyuki Akita, Norihiro Murata, Toshiyuki Yoshizawa, Shinji Nishimura
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Publication number: 20080315701Abstract: A dynamoelectric machine includes: a permanent magnet holding portion that is disposed integrally so as to project from the yoke portion on a portion of the pair of yoke portions that faces an inner circumferential surface near a tip end of the plurality of claw-shaped magnetic pole portions; an arc-shaped magnet holding aperture that has a C-shaped cross section that is formed in each of the permanent magnet holding portions so as to have an aperture center that is oriented axially, in which at least one axial end is open, and that opens radially outward; a magnet holding member that is made of a nonmagnetic material that is fitted into and held by the magnet holding aperture; and a permanent magnet that is held by the magnet holding member so as to face the inner circumferential surface near the tip end of the claw-shaped magnetic pole portions, that is prepared into a prismatic body that has a quadrilateral cross section perpendicular to an axial direction, and that is magnetically oriented in a reverse diType: ApplicationFiled: June 18, 2008Publication date: December 25, 2008Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Masaya Inoue, Kanji Shinkawa, Shinji Nishimura, Hiroyuki Akita, Toshiyuki Yoshizawa, Moriyuki Hazeyama, Norihiro Murata, Masao Morita
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Publication number: 20080155808Abstract: There are proposed a manufacturing method of a winding assembly of a rotating electrical machine using a rotation block and a fixed block and a manufacturing apparatus used for the same. The rotation block includes a rotation surface rotatable around a rotation axis, and the fixed block includes a first surface and a second surface opposite to each other and a shaping surface. The shaping surface is formed between end parts of the first and the second surfaces, is made to have an almost semicircular shape with the rotation axis as the center, and extends along the rotation axis. Plural wire rods are simultaneously fed from the first surface of the fixed block to the rotation surface of the rotation block, and the wire rods positioned on the rotation surface are bent by rotation of the rotation block.Type: ApplicationFiled: January 15, 2008Publication date: July 3, 2008Inventors: Yutaka Hirota, Norihiro Murata, Toshiaki Kashihara
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Publication number: 20080155809Abstract: There are proposed a manufacturing method of a winding assembly of a rotating electrical machine using a rotation block and a fixed block and a manufacturing apparatus used for the same. The rotation block includes a rotation surface rotatable around a rotation axis, and the fixed block includes a first surface and a second surface opposite to each other and a shaping surface. The shaping surface is formed between end parts of the first and the second surfaces, is made to have an almost semicircular shape with the rotation axis as the center, and extends along the rotation axis. Plural wire rods are simultaneously fed from the first surface of the fixed block to the rotation surface of the rotation block, and the wire rods positioned on the rotation surface are bent by rotation of the rotation block.Type: ApplicationFiled: January 15, 2008Publication date: July 3, 2008Inventors: Yutaka Hirota, Norihiro Murata, Toshiaki Kashihara
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Patent number: 7360303Abstract: There are proposed a manufacturing method of a winding assembly of a rotating electrical machine using a rotation block and a fixed block and a manufacturing apparatus used for the same. The rotation block includes a rotation surface rotatable around a rotation axis, and the fixed block includes a first surface and a second surface opposite to each other and a shaping surface. The shaping surface is formed between end parts of the first and the second surfaces, is made to have an almost semicircular shape with the rotation axis as the center, and extends along the rotation axis. Plural wire rods are simultaneously fed from the first surface of the fixed block to the rotation surface of the rotation block, and the wire rods positioned on the rotation surface are bent by rotation of the rotation block.Type: GrantFiled: January 28, 2004Date of Patent: April 22, 2008Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Yutaka Hirota, Norihiro Murata, Toshiaki Kashihara
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Publication number: 20060230603Abstract: There are proposed a manufacturing method of a winding assembly of a rotating electrical machine using a rotation block and a fixed block and a manufacturing apparatus used for the same. The rotation block includes a rotation surface rotatable around a rotation axis, and the fixed block includes a first surface and a second surface opposite to each other and a shaping surface. The shaping surface is formed between end parts of the first and the second surfaces, is made to have an almost semicircular shape with the rotation axis as the center, and extends along the rotation axis. Plural wire rods are simultaneously fed from the first surface of the fixed block to the rotation surface of the rotation block, and the wire rods positioned on the rotation surface are bent by rotation of the rotation block.Type: ApplicationFiled: January 28, 2004Publication date: October 19, 2006Inventors: Yutaka Hirota, Norihiro Murata, Toshiaki Kashihara