Patents by Inventor Hiroshi Hamano
Hiroshi Hamano 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: 20230109194Abstract: To prevent varnish from adhering to an adhesion prohibited area while satisfying required performance for varnish. A method for manufacturing a stator of a rotating electric machine in which a coil is wound around a stator core, the method includes: a first varnish process of forming a first varnish portion by dropping varnish at a coil disposed on an outermost circumference or an innermost circumference of a coil end portion where the coil protrudes from the stator core and positioned close to the stator core; and a second varnish process of forming a second varnish portion to provide a non-existence region where varnish is not applied between the first varnish portion and the second varnish portion by dropping varnish at a position farther from the stator core than a position in the first varnish process.Type: ApplicationFiled: January 15, 2021Publication date: April 6, 2023Applicant: Hitachi Astemo, Ltd.Inventors: Yukiko KAWANO, Hiroshi HORIE, Hiroshi HAMANO, Hideaki NOTO, Shunsuke ISOGAI, Chihiro OINUMA, Hirona TANAKA
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Patent number: 11502581Abstract: Disclosed is a motor unit that includes: a rotary electrical machine that has a cylindrical stator, a rotor disposed coaxially with the stator, a shaft disposed coaxially with the rotor, and a cylindrical case that houses the stator and the rotor; and a drive unit that has a swell swelling toward the case and is fixed to a circumferential surface that is located in a radial direction of the rotor and is the case. The case has a recess that corresponds to the swell.Type: GrantFiled: March 10, 2020Date of Patent: November 15, 2022Assignees: HONDA MOTOR CO., LTD., Hitachi Automotive Systems, Ltd.Inventors: Manabu Yazaki, Keiichiro Kashiwabara, Tomoyuki Suzuki, Heisuke Kobayashi, Takeshi Hoshinoya, Sachio Kawada, Akira Fujiwara, Yasuyuki Saito, Hiroshi Hamano, Tsuyoshi Harada
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Patent number: 11239735Abstract: A motor unit includes: a first rotating electric machine which includes a cylindrical first stator, a first rotor disposed coaxially with the first stator, a first shaft disposed coaxially with the first rotor, and a cylindrical first casing accommodating the first stator and the first rotor; a second rotating electric machine which includes a cylindrical second stator, a second rotor disposed coaxially with the second stator, a second shaft disposed coaxially with the second rotor, and a cylindrical second casing accommodating the second stator and the second rotor; a single drive device which is integrally fixed across a peripheral surface in a diameter direction of the first rotor in the first casing and a peripheral surface in a diameter direction of the second rotor in the second casing; and a surface-matching fixing portion which is fixed by a fixing member while an axial end surface of the first casing comes into contact with an axial end surface of the second casing.Type: GrantFiled: March 10, 2020Date of Patent: February 1, 2022Assignees: HONDA MOTOR CO., LTD., Hitachi Automotive Systems, Ltd.Inventors: Manabu Yazaki, Tomoyuki Suzuki, Sachio Kawada, Yasuyuki Saito, Hiroshi Hamano, Tsuyoshi Harada
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Patent number: 11054101Abstract: A lighting device includes a light emitting element; a first lens that receives light emitted from the light emitting element and emits first emission light; and a second lens that receives the first emission light and emits second emission light. The first lens has a first emission surface emitting the first emission light, the first emission surface having a convex shape protruding in a Z direction.Type: GrantFiled: August 20, 2020Date of Patent: July 6, 2021Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yosuke Araki, Ryoma Murase, Kazumasa Takata, Jun Hirai, Hiroshi Umiji, Hiroshi Hamano
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Publication number: 20210088194Abstract: A lighting device includes a light emitting element; a first lens that receives light emitted from the light emitting element and emits first emission light; and a second lens that receives the first emission light and emits second emission light. The first lens has a first emission surface emitting the first emission light, the first emission surface having a convex shape protruding in a Z direction.Type: ApplicationFiled: August 20, 2020Publication date: March 25, 2021Inventors: YOSUKE ARAKI, RYOMA MURASE, KAZUMASA TAKATA, JUN HIRAI, HIROSHI UMIJI, HIROSHI HAMANO
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Publication number: 20200295627Abstract: A rotating electric machine includes: a cylindrical stator core which includes a plurality of slots; a coil which includes a first coil end inserted into the slot and protruding toward one side of the stator core in an axial direction and a second coil end protruding toward the other side in the axial direction; a rotor which is disposed coaxially with the stator core; a shaft which is disposed coaxially with the rotor; and an end wall which is provided at an end side of the shaft and faces the first coil end in the axial direction. The end wall includes a refrigerant outlet which opens in the axial direction so that a refrigerant supplied from the outside is ejected toward the first coil end.Type: ApplicationFiled: March 11, 2020Publication date: September 17, 2020Inventors: Manabu Yazaki, Atsushi Nishida, Teruhito Niimi, Takuji Yano, Akira Kito, Sachio Kawada, Yasuyuki Saito, Hiroshi Hamano, Yuji Kobayashi
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Publication number: 20200295642Abstract: A motor unit includes: a first rotating electric machine which includes a cylindrical first stator, a first rotor disposed coaxially with the first stator, a first shaft disposed coaxially with the first rotor, and a cylindrical first casing accommodating the first stator and the first rotor; a second rotating electric machine which includes a cylindrical second stator, a second rotor disposed coaxially with the second stator, a second shaft disposed coaxially with the second rotor, and a cylindrical second casing accommodating the second stator and the second rotor; a single drive device which is integrally fixed across a peripheral surface in a diameter direction of the first rotor in the first casing and a peripheral surface in a diameter direction of the second rotor in the second casing; and a surface-matching fixing portion which is fixed by a fixing member while an axial end surface of the first casing comes into contact with an axial end surface of the second casing.Type: ApplicationFiled: March 10, 2020Publication date: September 17, 2020Inventors: Manabu Yazaki, Tomoyuki Suzuki, Sachio Kawada, Yasuyuki Saito, Hiroshi Hamano, Tsuyoshi Harada
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Publication number: 20200295629Abstract: Disclosed is a motor unit that includes: a rotary electrical machine that has a cylindrical stator, a rotor disposed coaxially with the stator, a shaft disposed coaxially with the rotor, and a cylindrical case that houses the stator and the rotor; and a drive unit that has a swell swelling toward the case and is fixed to a circumferential surface that is located in a radial direction of the rotor and is the case. The case has a recess that corresponds to the swell.Type: ApplicationFiled: March 10, 2020Publication date: September 17, 2020Inventors: Manabu Yazaki, Keiichiro Kashiwabara, Tomoyuki Suzuki, Heisuke Kobayashi, Takeshi Hoshinoya, Sachio Kawada, Akira Fujiwara, Yasuyuki Saito, Hiroshi Hamano, Tsuyoshi Harada
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Patent number: 10727709Abstract: Provided are a rotor of a rotary electrical machine, a rotary electrical machine, and a vehicle, which enable mitigation of stress concentration generated in a magnet insertion hole of a rotor core and high-speed rotation. A rotor 250 of a rotary electrical machine includes: a rotor core 252 including a plurality of magnet insertion holes 253 for each magnetic pole; and permanent magnets 254 inserted into the magnet insertion holes, in which a bridge portion 260, which mechanically connects a rotor core portion 256 on the outer circumferential side of the magnet insertion holes 253 and a rotor core portion 263 on the inner circumferential side of the magnet insertion holes 253, is provided between the adjacent magnet insertion holes, and the bridge portion 260 has two inflection points 266a and 266b on the outer circumferential side of the bridge portion 260.Type: GrantFiled: July 27, 2016Date of Patent: July 28, 2020Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Yuji Kano, Hiroshi Hamano, Takayuki Koizumi, Yasuyuki Saito, Yousuke Umesaki, Seigo Misaki
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Patent number: 10566854Abstract: The efficiency of inserting a coil conductor into a slot of a stator core is improved in the present invention. Included are a rotor and a stator. The stator includes a stator core formed with a plurality of slots formed at a predetermined depth in a radial direction and arranged while spaced apart from each other in a circumferential direction and stator winding having a coil conductor inserted in each of the slots. A plurality of protrusions are formed in each of the slots of the stator core toward a space into which the coil conductor is inserted.Type: GrantFiled: July 29, 2016Date of Patent: February 18, 2020Assignee: Hitachi Automotive Systems, Ltd.Inventors: Takayuki Koizumi, Hiroshi Hamano, Yasuyuki Saito, Yousuke Umesaki, Yuji Kanoh, Genzou Iwaki
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Patent number: 10523073Abstract: TIG welding can be applied, and short circuiting of stator winding due to a jointing material of coil conductors is prevented. A rotating electric machine includes a rotor; and a stator having a stator core and a stator winding, wherein the stator winding has a plurality of coil conductors, and joint parts connecting ends of the coil conductors protruding from an end face of the stator core, and the ends of the coil conductors have weir portions formed for blocking flow of metal of the joint parts.Type: GrantFiled: August 2, 2016Date of Patent: December 31, 2019Assignee: Hitachi Automotive Systems, Ltd.Inventors: Yousuke Umesaki, Hiroshi Hamano, Takayuki Koizumi, Seigo Misaki
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Patent number: 10511198Abstract: There is provided a rotor for a rotary electrical machine for improving mechanical strength of the rotor against centrifugal force. The rotary electrical machine is provided with a stator, and a rotor disposed with a gap from the stator, which has a rotor core. The rotor includes a magnet insertion hole, and a permanent magnet inserted into the magnet insertion hole. A clearance part is formed at a position of the magnet insertion hole corresponding to a corner of the inserted permanent magnet, which has a facing surface that is formed to face a surface of the permanent magnet via a gap. The facing surface of the clearance part has inflection points so that each of obtuse angles is formed by the two facing surfaces contiguous with the inflection points.Type: GrantFiled: March 7, 2014Date of Patent: December 17, 2019Assignee: Hitachi Automotive Systems, Ltd.Inventors: Yuji Kano, Hiroshi Hamano, Yasuyuki Saito, Ryoji Kobayashi, Yosuke Umesaki, Manabu Oshida
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Patent number: 10340756Abstract: A rotating electric machine includes a stator core, a stator winding, and a rotor rotatably disposed via an air gap so as to be allowed to rotate relative to the stator core. A magnetic resistance-altering portion is provided on every other magnetic pole of magnetically-assisted salient pole members. A magnetic pole provided with the magnetic resistance-altering portion and a magnetic pole without the magnetic resistance-altering portion are alternately arranged.Type: GrantFiled: July 17, 2018Date of Patent: July 2, 2019Assignee: Hitachi Automotive Systems, Ltd.Inventors: Yasuyuki Saito, Hiroshi Hamano, Ryoji Kobayashi, Taisuke Ikeda, Yuji Kano
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Publication number: 20180342914Abstract: A rotating electric machine includes a stator core, a stator winding, and a rotor rotatably disposed via an air gap so as to be allowed to rotate relative to the stator core. A magnetic resistance-altering portion is provided on every other magnetic pole of magnetically-assisted salient pole members. A magnetic pole provided with the magnetic resistance-altering portion and a magnetic pole without the magnetic resistance-altering portion are alternately arranged.Type: ApplicationFiled: July 17, 2018Publication date: November 29, 2018Inventors: Yasuyuki SAITO, Hiroshi HAMANO, Ryoji KOBAYASHI, Taisuke IKEDA, Yuji KANO
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Publication number: 20180254673Abstract: The efficiency of inserting a coil conductor into a slot of a stator core is improved in the present invention. Included are a rotor and a stator. The stator includes a stator core formed with a plurality of slots formed at a predetermined depth in a radial direction and arranged while spaced apart from each other in a circumferential direction and stator winding having a coil conductor inserted in each of the slots. A plurality of protrusions are formed in each of the slots of the stator core toward a space into which the coil conductor is inserted.Type: ApplicationFiled: July 29, 2016Publication date: September 6, 2018Applicant: Hitachi Automotive Systems, Ltd.Inventors: Takayuki KOIZUMI, Hiroshi HAMANO, Yasuyuki SAITO, Yousuke UMESAKI, Yuji KANOH, Genzou IWAKI
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Publication number: 20180248430Abstract: TIG welding can be applied, and short circuiting of stator winding due to a jointing material of coil conductors is prevented. A rotating electric machine includes a rotor; and a stator having a stator core and a stator winding, wherein the stator winding has a plurality of coil conductors, and joint parts connecting ends of the coil conductors protruding from an end face of the stator core, and the ends of the coil conductors have weir portions formed for blocking flow of metal of the joint parts.Type: ApplicationFiled: August 2, 2016Publication date: August 30, 2018Inventors: Yousuke UMESAKI, Hiroshi HAMANO, Takayuki KOIZUMI, Seigo MISAKI
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Publication number: 20180248427Abstract: Provided are a rotor of a rotary electrical machine, a rotary electrical machine, and a vehicle, which enable mitigation of stress concentration generated in a magnet insertion hole of a rotor core and high-speed rotation. A rotor 250 of a rotary electrical machine includes: a rotor core 252 including a plurality of magnet insertion holes 253 for each magnetic pole; and permanent magnets 254 inserted into the magnet insertion holes, in which a bridge portion 260, which mechanically connects a rotor core portion 256 on the outer circumferential side of the magnet insertion holes 253 and a rotor core portion 263 on the inner circumferential side of the magnet insertion holes 253, is provided between the adjacent magnet insertion holes, and the bridge portion 260 has two inflection points 266a and 266b on the outer circumferential side of the bridge portion 260.Type: ApplicationFiled: July 27, 2016Publication date: August 30, 2018Applicant: Hitachi Automotive Systems, Ltd.Inventors: Yuji KANO, Hiroshi HAMANO, Takayuki KOIZUMI, Yasuyuki SAITO, Yousuke UMESAKI, Seigo MISAKI
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Patent number: 10056794Abstract: A rotating electric machine, in which a cross conductors of a stator connect slot conductors so as to stride N+1 slots at coil ends on one side and stride N?1 slots at coil ends on another side, with N representing a number of slots per pole, a stator winding includes a plurality of slot conductor groups each made up with a plurality of slot conductors corresponding to a single phase, the plurality of slot conductors in each slot conductor group are inserted at a predetermined number Ns of successive slots forming a continuous range along a circumference of the stator core so that the slot conductors in the slot conductor group take successive slot positions and successive layer positions, Ns=NSPP+NL when NSPP represents a number of slots per pole per phase and a number of layers is expressed as 2×NL.Type: GrantFiled: December 4, 2017Date of Patent: August 21, 2018Assignee: Hitachi Automotive Systems, Ltd.Inventors: Yasuyuki Saito, Hiroshi Hamano, Ryoji Kobayashi, Taisuke Ikeda, Yuji Kano
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Publication number: 20180091007Abstract: A rotating electric machine, in which a cross conductors of a stator connect slot conductors so as to stride N+1 slots at coil ends on one side and stride N?1 slots at coil ends on another side, with N representing a number of slots per pole, a stator winding includes a plurality of slot conductor groups each made up with a plurality of slot conductors corresponding to a single phase, the plurality of slot conductors in each slot conductor group are inserted at a predetermined number Ns of successive slots forming a continuous range along a circumference of the stator core so that the slot conductors in the slot conductor group take successive slot positions and successive layer positions, Ns=NSPP+NL when NSPP represents a number of slots per pole per phase and a number of layers is expressed as 2×NL.Type: ApplicationFiled: December 4, 2017Publication date: March 29, 2018Inventors: Yasuyuki Saito, Hiroshi Hamano, Ryoji Kobayashi, Taisuke Ikeda, Yuji Kano
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Patent number: 9871417Abstract: A rotating electric machine, in which a cross conductors of a stator connect slot conductors so as to stride N+1 slots at coil ends on one side and stride N?1 slots at coil ends on another side, with N representing a number of slots per pole, a stator winding includes a plurality of slot conductor groups each made up with a plurality of slot conductors corresponding to a single phase, the plurality of slot conductors in each slot conductor group are inserted at a predetermined number Ns of successive slots forming a continuous range along a circumference of the stator core so that the slot conductors in the slot conductor group take successive slot positions and successive layer positions, Ns=NSPP+NL when NSPP represents a number of slots per pole per phase and a number of layers is expressed as 2×NL.Type: GrantFiled: January 9, 2013Date of Patent: January 16, 2018Assignee: Hitachi Automotive Systems, Ltd.Inventors: Yasuyuki Saito, Hiroshi Hamano, Ryoji Kobayashi, Taisuke Ikeda, Yuji Kano