Patents by Inventor Seigo MISAKI
Seigo MISAKI 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: 20240030770Abstract: Provided is a rotary electric machine which is configured to draw three-phase output lines from a connection side coil end by an easy process. A stator for a rotary electric machine according to the present invention includes a plurality of segment coils including connection-side winding portions and non-connection-side winding portions. The connection-side winding portions are arranged on one side of a stator core and connected to slots with the same slot pitch, and the non-connection-side winding portions are arranged on the other side of the stator core and inserted into the slots with a plurality of kinds of slot pitches. The connection-side winding portions include a first connection group and a second connection group. The first connection group is provided with a plurality of terminal portions for connecting the segments, and the second connection group connects layers different from those in the first connection group, and is provided with a plurality of terminal portions.Type: ApplicationFiled: September 26, 2023Publication date: January 25, 2024Inventors: Yuji KANO, Takayuki KOIZUMI, Yasuyuki SAITO, Seigo MISAKI, Hisaya SHIMIZU
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Patent number: 11811284Abstract: Provided is a rotary electric machine which is configured to draw three-phase output lines from a connection side coil end by an easy process. A stator for a rotary electric machine according to the present invention includes a plurality of segment coils including connection-side winding portions and non-connection-side winding portions. The connection-side winding portions are arranged on one side of a stator core and connected to slots with the same slot pitch, and the non-connection-side winding portions are arranged on the other side of the stator core and inserted into the slots with a plurality of kinds of slot pitches. The connection-side winding portions include a first connection group and a second connection group. The first connection group is provided with a plurality of terminal portions for connecting the segments, and the second connection group connects layers different from those in the first connection group, and is provided with a plurality of terminal portions.Type: GrantFiled: April 1, 2021Date of Patent: November 7, 2023Assignee: Hitachi Astemo, Ltd.Inventors: Yuji Kano, Takayuki Koizumi, Yasuyuki Saito, Seigo Misaki, Hisaya Shimizu
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Publication number: 20220393540Abstract: To provide a rotary electrical machine having a novel configuration adapted to provide axial downsizing of the rotary electrical machine when connecting an electrical connection conductor to a welded side terminal section of a coil end of a segment coil. The rotary electrical machine includes: a stator core 21 including slots radially extended in a radial fashion; a plurality of segment coils 34 radially stacked and accommodated in the slot 37; and a neutral point bus-bar 33 laid on a side of a welded coil end of the segment coil 34 and including a connection wiring section and a connection section for interconnecting the different segment coils. In a state where the segment coils 34 are mounted, at least a part of the connection wiring section is laid in a radial space RS radially defined by the segment coils 34.Type: ApplicationFiled: October 21, 2019Publication date: December 8, 2022Inventors: Seigo MISAKI, Takayuki KOIZUMI, Shingo KITAJIMA, Hisaya SHIMIZU
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Patent number: 11245299Abstract: Provided is a rotary electric machine which is configured to draw three-phase output lines from a connection side coil end by an easy process. A stator for a rotary electric machine according to the present invention includes a plurality of segment coils including connection-side winding portions and non-connection-side winding portions. The connection-side winding portions are arranged on one side of a stator core and connected to slots with the same slot pitch, and the non-connection-side winding portions are arranged on the other side of the stator core and inserted into the slots with a plurality of kinds of slot pitches. The connection-side winding portions include a first connection group and a second connection group. The first connection group is provided with a plurality of terminal portions for connecting the segments, and the second connection group connects layers different from those in the first connection group, and is provided with a plurality of terminal portions.Type: GrantFiled: January 19, 2017Date of Patent: February 8, 2022Assignee: Hitachi Astemo, Ltd.Inventors: Yuji Kano, Takayuki Koizumi, Yasuyuki Saito, Seigo Misaki, Hisaya Shimizu
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Publication number: 20210384805Abstract: An object of the invention is to provide a method for manufacturing a stator of a rotating electric machine that can reduce the size of a coil end. According to the invention, a method for manufacturing a stator, which includes a stator core and a stator coil to which ends of a plurality of substantially U-shaped segment coils inserted into slots of the stator core are connected, includes twisting the end of the segment coil using a twisting jig 600. In the twisting, in a state in which the end of the segment coil is inserted into a groove portion 610 of the twisting jig, an edge portion 620 forming a part of the groove portion 610 is used as a twisting fulcrum, and a load is applied to the segment coil to forma press trace of the edge portion on the segment coil.Type: ApplicationFiled: November 26, 2018Publication date: December 9, 2021Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Shingo KITAJIMA, Hisaya SHIMIZU, Takayuki KOIZUMI, Seigo MISAKI
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Publication number: 20210328473Abstract: Provided is a rotary electric machine which is configured to draw three-phase output lines from a connection side coil end by an easy process. A stator for a rotary electric machine according to the present invention includes a plurality of segment coils including connection-side winding portions and non-connection-side winding portions. The connection-side winding portions are arranged on one side of a stator core and connected to slots with the same slot pitch, and the non-connection-side winding portions are arranged on the other side of the stator core and inserted into the slots with a plurality of kinds of slot pitches. The connection-side winding portions include a first connection group and a second connection group. The first connection group is provided with a plurality of terminal portions for connecting the segments, and the second connection group connects layers different from those in the first connection group, and is provided with a plurality of terminal portions.Type: ApplicationFiled: April 1, 2021Publication date: October 21, 2021Inventors: Yuji KANO, Takayuki KOIZUMI, Yasuyuki SAITO, Seigo MISAKI, Hisaya SHIMIZU
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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: 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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Publication number: 20190044403Abstract: Provided is a rotary electric machine which is configured to draw three-phase output lines from a connection side coil end by an easy process. A stator for a rotary electric machine according to the present invention includes a plurality of segment coils including connection-side winding portions and non-connection-side winding portions. The connection-side winding portions are arranged on one side of a stator core and connected to slots with the same slot pitch, and the non-connection-side winding portions are arranged on the other side of the stator core and inserted into the slots with a plurality of kinds of slot pitches. The connection-side winding portions include a first connection group and a second connection group. The first connection group is provided with a plurality of terminal portions for connecting the segments, and the second connection group connects layers different from those in the first connection group, and is provided with a plurality of terminal portions.Type: ApplicationFiled: January 19, 2017Publication date: February 7, 2019Inventors: Yuji KANO, Takayuki KOIZUMI, Yasuyuki SAITO, Seigo MISAKI, Hisaya SHIMIZU
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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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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