Patents by Inventor Yoshinobu Utsumi
Yoshinobu Utsumi 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: 20230113162Abstract: This rotary electric machine includes: an electric motor; a power supply unit including a heat-dissipation member, a power module, and a cover covering the heat-dissipation member and the power module; and a coolant path. A connection portion connecting the electric motor and the power supply unit is provided between the housing and the power supply unit. A cylindrical portion of the cover extends toward the one side in the axial direction and covers the connection portion from the radially outer side. The coolant path is provided at one or both of the heat-dissipation member and an area between the heat-dissipation member and the housing. The coolant path overlaps the power module as seen in the axial direction. The cylindrical portion of the cover has an opening through which a coolant passes, at a circumferential-direction position different from a circumferential-direction position on the radially outer side of the connection portion.Type: ApplicationFiled: April 22, 2022Publication date: April 13, 2023Applicant: Mitsubishi Electric CorporationInventors: Tadashi MURAKAMI, Hiroyuki Higashino, Jun Tahara, Shota Morikawa, Yoshinobu Utsumi, Yosuke Uno
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Patent number: 11581786Abstract: The rotary electric machine includes a motor unit, and an inverter unit having a power module, a field module, and a cooler. The cooler includes a heat transfer member having, on the one-side surface, a channel groove recessed toward the other side, a lid member, a sealing agent, and a coolant supply/discharge unit; and the lid member is fixed to the heat transfer member with a screw hole, a through hole, and a screw; and, at a position between the screw hole and the through hole, and the channel groove, a recess is provided on one or both of the one-side surface of the heat transfer member and the other-side surface of the lid member, and the sealing agent is applied on the side closer to the channel groove than the recess while no sealing agent is applied on the side closer to the screw hole than the recess.Type: GrantFiled: February 26, 2021Date of Patent: February 14, 2023Assignee: Mitsubishi Electric CorporationInventors: Ryota Ashikawa, Mitsunori Ishizaki, Tomoaki Murata, Takashi Hashiba, Yoshinobu Utsumi
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Patent number: 11552525Abstract: A rotating electrical machine such that a power supply unit can be efficiently cooled, with no increase in size in an axial direction of the rotating electrical machine, is provided. A rotating electrical machine main body and a power supply unit are integrally fixed, and a refrigerant passage is provided on the rotating electrical machine main body side of a metal frame configuring the power supply unit. The refrigerant passage and a control part that controls power supplied to the rotating electrical machine main body are disposed in the same plane in an axial direction of the rotating electrical machine main body, and the refrigerant passage is disposed farther to a radial direction outer side of the rotating electrical machine main body than the control part.Type: GrantFiled: June 9, 2020Date of Patent: January 10, 2023Assignee: Mitsubishi Electric CorporationInventors: Jun Tahara, Takashi Hashiba, Satoshi Mitsunaga, Hiroyuki Higashino, Mitsunori Ishizaki, Toshiaki Kashihara, Tadashi Murakami, Yoshinobu Utsumi
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Publication number: 20220360145Abstract: With an object, of providing a rotating electric machine such that a reduction in size can be achieved, and a balance between a cooling performance and vibration resistance can be achieved, a multiple of connection portions formed of a first connection portion and a second connection portion that mechanically connect a rotating electric machine main body and a power converter are provided on a non-external device connection portion side bracket in the rotating electric machine main body and a heat dissipating member in the power converter, cross-sectional centers of the first connection portion and the second connection portion are caused to be positioned farther to an inner diameter side than an outer diameter of a stator, and a power module is disposed between two connection portions neighboring in a circumferential direction.Type: ApplicationFiled: December 20, 2021Publication date: November 10, 2022Applicant: Mitsubishi Electric CorporationInventors: Hiroyuki HIGASHINO, Yosuke UNO, Saburo TANAKA, Toshiaki KASHIHARA, Yoshinobu UTSUMI, Jun TAHARA, Hiroyuki YAHARA, Takaya MUTO, Shota MORIKAWA, Naohide MAEDA
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Publication number: 20220190670Abstract: In the rotating electrical machine with integrated control device provided with the drive unit and the inverter assembly, the brush holder that holds the brush is detachably attached to either the rear bracket side of the inverter assembly or the inverter assembly side of the rear bracket so that it is not necessary to provide a hole for incorporating the brush holder in the central part of the control module, and the radial dimension of the control module can be reduced.Type: ApplicationFiled: September 27, 2021Publication date: June 16, 2022Applicant: Mitsubishi Electric CorporationInventors: Yosuke UNO, Yoshinobu UTSUMI, Jun TAHARA, Hiroyuki HIGASHINO, Tatsuya FUKASE
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Publication number: 20220077744Abstract: The rotary electric machine includes a motor unit, and an inverter unit having a power module, a field module, and a cooler. The cooler includes a heat transfer member having, on the one-side surface, a channel groove recessed toward the other side, a lid member, a sealing agent, and a coolant supply/discharge unit; and the lid member is fixed to the heat transfer member with a screw hole, a through hole, and a screw; and, at a position between the screw hole and the through hole, and the channel groove, a recess is provided on one or both of the one-side surface of the heat transfer member and the other-side surface of the lid member, and the sealing agent is applied on the side closer to the channel groove than the recess while no sealing agent is applied on the side closer to the screw hole than the recess.Type: ApplicationFiled: February 26, 2021Publication date: March 10, 2022Applicant: Mitsubishi Electric CorporationInventors: Ryota ASHIKAWA, Mitsunori ISHIZAKI, Tomoaki MURATA, Takashi HASHIBA, Yoshinobu UTSUMI
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Publication number: 20210226506Abstract: A rotating electrical machine such that a power supply unit can be efficiently cooled, with no increase in size in an axial direction of the rotating electrical machine, is provided. A rotating electrical machine main body and a power supply unit are integrally fixed, and a refrigerant passage is provided on the rotating electrical machine main body side of a metal frame configuring the power supply unit. The refrigerant passage and a control part that controls power supplied to the rotating electrical machine main body are disposed in the same plane in an axial direction of the rotating electrical machine main body, and the refrigerant passage is disposed farther to a radial direction outer side of the rotating electrical machine main body than the control part.Type: ApplicationFiled: June 9, 2020Publication date: July 22, 2021Applicant: Mitsubishi Electric CorporationInventors: Jun TAHARA, Takashi HASHIBA, Satoshi MITSUNAGA, Hiroyuki HIGASHINO, Mitsunori ISHIZAKI, Toshiaki KASHIHARA, Tadashi MURAKAMI, Yoshinobu UTSUMI
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Publication number: 20210067002Abstract: A heat-generating-component cooling flow passage and a bearing cooling flow passage are formed by mounting a flow passage cover to a rotor unit side of a rear bracket-cum-cooler. An arrangement region of the bearing cooling flow passage in an axial direction of the rotary shaft is arranged so as to overlap with at least a part of an arrangement region of a rear bearing in the axial direction of the rotary shaft. The heat-generating-component cooling flow passage is arranged so as to overlap with at least a part of an arrangement region of a heat generating component when viewed in the axial direction of the rotary shaft. A stator core is connected to the heat-generating-component cooling flow passage through the rear bracket-cum-cooler.Type: ApplicationFiled: March 23, 2018Publication date: March 4, 2021Applicant: Mitsubishi Electric CorporationInventors: Hiroyuki HIGASHINO, Jun TAHARA, Tatsuya FUKASE, Yoshinobu UTSUMI, Tomoaki SHIMANO
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Patent number: 10432069Abstract: The present invention is concerning a controller-integrated rotary electric machine having a power circuit portion provided between an external power source and a stator winding of a rotary electric machine main body, wherein the power circuit portion includes: a positive-side power input/output terminal and a negative-side power input/output terminal that are electrically connected to the external power source; a power module that performs power conversion between the external power source and the stator winding; and a single heat sink that cools the power module, the positive-side power input/output terminal being fixed to the single heat sink via an insulating material, and the negative-side power input/output terminal being fixed directly to the single heat sink.Type: GrantFiled: November 8, 2016Date of Patent: October 1, 2019Assignee: Mitsubishi Electric CorporationInventors: Toshiaki Kashihara, Yoshinobu Utsumi, Masahiko Fujita
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Patent number: 9899898Abstract: A controller-integrated rotary electric machine with electrolytic corrosion resistance improved can be obtained. The controller-integrated rotary electric machine includes: a power circuit unit provided between an external power supply and a stator winding of a rotary electric machine main body; a power input/output terminal bolt provided in the power circuit unit and electrically connected to the external power supply; a plate pressed into the power input/output terminal bolt and abutting a power input/output conductor; a bus bar connected to the power input/output conductor; and a power module connected to the bus bar and the stator winding, wherein the power input/output terminal bolt and the bus bar are separated from each other.Type: GrantFiled: June 12, 2014Date of Patent: February 20, 2018Assignee: Mitsubishi Electric CorporationInventors: Toshiaki Kashihara, Yoshinobu Utsumi
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Publication number: 20170353084Abstract: The present invention is concerning a controller-integrated rotary electric machine having a power circuit portion provided between an external power source and a stator winding of a rotary electric machine main body, wherein the power circuit portion includes: a positive-side power input/output terminal and a negative-side power input/output terminal that are electrically connected to the external power source; a power module that performs power conversion between the external power source and the stator winding; and a single heat sink that cools the power module, the positive-side power input/output terminal being fixed to the single heat sink via an insulating material, and the negative-side power input/output terminal being fixed directly to the single heat sink.Type: ApplicationFiled: November 8, 2016Publication date: December 7, 2017Applicant: Mitsubishi Electric CorporationInventors: Toshiaki KASHIHARA, Yoshinobu UTSUMI, Masahiko FUJITA
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Patent number: 9667124Abstract: In a controller-integrated electric rotating machine configured to assemble a front side semi-manufactured assembly E formed from an electric rotating machine main body 1 and a front bracket 4 with the rear side semi-manufactured assembly D to which a rear bracket 5, a control unit assembly A, a power unit assembly B, and a brush unit assembly C are integrated, a series of brush restricting pin insertion holes 24 are disposed from a rear side end surface of the control unit assembly through the brush, and therefore assembling workability is improved without failures in assembling work which occur due to breaking away of a brush from a brush holder to the rotary shaft side.Type: GrantFiled: August 8, 2011Date of Patent: May 30, 2017Assignee: Mitsubishi Electric CorporationInventors: Yoshinobu Utsumi, Masahiko Fujita
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Patent number: 9570954Abstract: A control device-integrated rotating electric machine includes: a rotor integrally supported by a rotary shaft; a stator; a front case and a rear case; a pulley provided on a part of the rotary shaft, the part being protruded from the front case; a control circuit portion provided outside the rear case; a cover for covering the control circuit portion; and a rotating electric machine-side connector provided for the control circuit portion, the rotating electric machine-side connector being provided outside the cover. The rotating electric machine-side connector has a connection side that is oriented so as to be inclined on a side separating from the pulley with respect to a direction orthogonal to a width direction of the pulley, in which a belt is looped.Type: GrantFiled: December 4, 2013Date of Patent: February 14, 2017Assignee: Mitsubishi Electric CorporationInventors: Toshiaki Kashihara, Yoshinobu Utsumi
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Patent number: 9444312Abstract: A metal plate is insert-molded into a case so as to be exposed inside a B terminal mounting aperture so as to overlap with a busbar, a B terminal bolt is press-fitted from an opposite side from the busbar into a press-fitting aperture that is formed on the portion of the metal plate that is exposed inside the B terminal mounting aperture, a spacer and a nut are mounted onto a shaft portion of the B terminal bolt, and the nut is electrically connected to the busbar by the busbar being pressed and held between the spacer and the nut by a fastening force from the nut.Type: GrantFiled: June 25, 2014Date of Patent: September 13, 2016Assignee: Mitsubishi Electric CorporationInventors: Masahiko Fujita, Yoshinobu Utsumi
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Patent number: 9413209Abstract: A rotating electric machine including: a bracket holding a rotor and a stator of a motor; a heat sink provided fixedly to the bracket on an outside of the bracket; a resolver disposed between the heat sink and the motor; a stator circuit portion and a field circuit portion disposed to the heat sink on a side opposite to the resolver; and a control board supported on an insert case attached to the heat sink and electrically connected to the stator circuit portion and the field circuit portion. A resolver input-output terminal is electrically connected to the control board by passing through an insertion hole provided to the heat sink. The rotating electric machine configured in this manner is compact and inexpensive with an excellent heat-releasing performance and a capability of reducing man-hours required for assembly and components required for connection.Type: GrantFiled: February 8, 2013Date of Patent: August 9, 2016Assignee: Mitsubishi Electric CorporationInventors: Naohiro Motoishi, Masahiko Fujita, Yoshinobu Utsumi
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Publication number: 20150229172Abstract: A controller-integrated rotary electric machine with electrolytic corrosion resistance improved can be obtained. The controller-integrated rotary electric machine includes: a power circuit unit provided between an external power supply and a stator winding of a rotary electric machine main body; a power input/output terminal bolt provided in the power circuit unit and electrically connected to the external power supply; a plate pressed into the power input/output terminal bolt and abutting a power input/output conductor; a bus bar connected to the power input/output conductor; and a power module connected to the bus bar and the stator winding, wherein the power input/output terminal bolt and the bus bar are separated from each other.Type: ApplicationFiled: June 12, 2014Publication date: August 13, 2015Applicant: Mitsubishi Electric CorporationInventors: Toshiaki KASHIHARA, Yoshinobu UTSUMI
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Publication number: 20150188395Abstract: A metal plate is insert-molded into a case so as to be exposed inside a B terminal mounting aperture so as to overlap with a busbar, a B terminal bolt is press-fitted from an opposite side from the busbar into a press-fitting aperture that is formed on the portion of the metal plate that is exposed inside the B terminal mounting aperture, a spacer and a nut are mounted onto a shaft portion of the B terminal bolt, and the nut is electrically connected to the busbar by the busbar being pressed and held between the spacer and the nut by a fastening force from the nut.Type: ApplicationFiled: June 25, 2014Publication date: July 2, 2015Applicant: Mitsubishi Electric CorporationInventors: Masahiko FUJITA, Yoshinobu UTSUMI
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Patent number: 8970076Abstract: A first cooling air passage is formed to let first cooling air generated by a cooling fan in from a radially outside of an inverter apparatus to cool a heat sink and out through exhaust holes provided on an outer peripheral side of a rear bracket by passing an inner periphery of the rear bracket. Also, a second cooling air passage is formed to let second cooling air generated by the cooling fan into a hollow portion of the inverter apparatus from an axially rear of a rotation shaft to cool a brush holder and a magnetic pole position detection sensor and out through the exhaust holes by passing the inner periphery of the rear bracket. Hence, cooling performance for the magnetic pole position detection sensor and the brush holder may be enhanced and an axial dimension may be reduced.Type: GrantFiled: November 5, 2012Date of Patent: March 3, 2015Assignee: Mitsubishi Electric CorporationInventors: Hitoshi Isoda, Yoshinobu Utsumi, Masahiko Fujita
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Publication number: 20140354093Abstract: A control device-integrated rotating electric machine includes: a rotor integrally supported by a rotary shaft; a stator; a front case and a rear case; a pulley provided on a part of the rotary shaft, the part being protruded from the front case; a control circuit portion provided outside the rear case; a cover for covering the control circuit portion; and a rotating electric machine-side connector provided for the control circuit portion, the rotating electric machine-side connector being provided outside the cover. The rotating electric machine-side connector has a connection side that is oriented so as to be inclined on a side separating from the pulley with respect to a direction orthogonal to a width direction of the pulley, in which a belt is looped.Type: ApplicationFiled: December 4, 2013Publication date: December 4, 2014Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Toshiaki KASHIHARA, Yoshinobu UTSUMI
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Patent number: 8698363Abstract: An electric rotating machine for a vehicle capable of reducing influence of leakage flux on a turning angle detector as much as possible and detecting a turning angle more accurately is provided. The electric rotating machine for a vehicle includes: a rotor core 12 that is fitted to a rotary shaft 7; a stator core 24 that is concentric with the rotor core 12 and disposed on the outside of the rotor core 12; and a resolver 31 acting as a turning angle detector that is disposed on one shaft end of the rotary shaft 7; in which the rotary shaft 7 itself is constituted to be magnetic flux interrupting means made of a non-magnetic material.Type: GrantFiled: May 8, 2008Date of Patent: April 15, 2014Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Yoshinobu Utsumi, Hideki Morikaku, Yoshihito Asao