Patents by Inventor Tomohiko NAGASHIMA
Tomohiko NAGASHIMA 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: 11124226Abstract: There are provided two sets of control units for driving an electric motor having two sets of independent windings; a power source is supplied through a single power-source connector; a conductive member connected with a terminal of the power-source connector branches into at least two portions in the vicinity of the power-source connector; two sets of power source relays, filters, and inverter circuits are arranged symmetrically with respect to the power-source connector.Type: GrantFiled: October 13, 2016Date of Patent: September 21, 2021Assignee: Mitsubishi Electric CorporationInventors: Tomohiko Nagashima, Akihiko Mori
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Patent number: 11046356Abstract: [Problem] In an electric power steering device that includes a filter section, the electric power steering device in which a motor and a control unit are integrated with each other, a device that aims to improve the noise suppression function of the filter section and improve workability is provided. [Solution] In an electric power steering device that includes a filter section, the electric power steering device in which a motor and a control unit are integrated with each other, the control unit includes a filter module forming the filter section connected near a connector for power supply placed in an outermost portion, and this filter module is configured with wiring for electric conduction, coils and, and a filter substrate on which capacitors are mounted.Type: GrantFiled: March 14, 2016Date of Patent: June 29, 2021Assignee: Mitsubishi Electric CorporationInventors: Kentaro Urimoto, Tomohiko Nagashima, Yoshihito Asao
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Patent number: 10752283Abstract: Two sets of independent armature windings and two sets of control units are provided; a single power-source connector branches into at least four lines in the vicinity of a power-source terminal; a power source relay, a filter, and an inverter circuit are connected, in that order, with a line where a large current flows; a control circuit unit is connected with a line where a small current flows and a detection circuit for detecting an abnormality in the control circuit unit is provided in that line.Type: GrantFiled: September 5, 2016Date of Patent: August 25, 2020Assignee: Mitsubishi Electric CorporationInventors: Tomohiko Nagashima, Akihiko Mori
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Patent number: 10548213Abstract: An electronic controlling apparatus includes a circuit board in which conductor layers and insulating layers are disposed alternately. In some embodiments, thicknesses of an upper portion outer conductor layer that is disposed on a first surface of the circuit board and a lower portion outer conductor layer that is disposed on a second surface of the circuit board are identical and have greatest thickness among the conductor layers, or thicknesses of a first outermost position inner conductor layer and a second outermost position inner conductor layer that are positioned at two end portions inside the circuit board are identical and have greatest thickness among the conductor layers, and the conductor layers are disposed symmetrically so as to have a central plane in a thickness direction of the circuit board as a plane of symmetry. In some embodiments, thicknesses and arrangements of conductor layers are not symmetrical in the thickness direction of the circuit board.Type: GrantFiled: March 7, 2016Date of Patent: January 28, 2020Assignee: Mitsubishi Electric CorporationInventors: Tomohiko Nagashima, Yoshihito Asao
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Publication number: 20190291778Abstract: Two sets of independent armature windings and two sets of control units are provided; a single power-source connector branches into at least four lines in the vicinity of a power-source terminal; a power source relay, a filter, and an inverter circuit are connected, in that order, with a line where a large current flows; a control circuit unit is connected with a line where a small current flows and a detection circuit for detecting an abnormality in the control circuit unit is provided in that line.Type: ApplicationFiled: September 5, 2016Publication date: September 26, 2019Applicant: Mitsubishi Electric CorporationInventors: Tomohiko NAGASHIMA, Akihiko MORI
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Publication number: 20190276071Abstract: There are provided two sets of control units for driving an electric motor having two sets of independent windings; a power source is supplied through a single power-source connector; a conductive member connected with a terminal of the power-source connector branches into at least two portions in the vicinity of the power-source connector; two sets of power source relays, filters, and inverter circuits are arranged symmetrically with respect to the power-source connector.Type: ApplicationFiled: October 13, 2016Publication date: September 12, 2019Applicant: Mitsubishi Electric CorporationInventors: Tomohiko NAGASHIMA, Akihiko MORI
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Publication number: 20190029107Abstract: An electronic controlling apparatus includes a circuit board in which conductor layers and insulating layers are disposed alternately, thicknesses of an upper portion outer conductor layer that is disposed on a first surface of the circuit board and a lower portion outer conductor layer that is disposed on a second surface of the circuit board are identical and have greatest thickness among the conductor layers, or thicknesses of a first outermost position inner conductor layer and a second outermost position inner conductor layer that are positioned at two end portions inside the circuit board are identical and have greatest thickness among the conductor layers, and the conductor layers are disposed symmetrically so as to have a central plane in a thickness direction of the circuit board as a plane of symmetry.Type: ApplicationFiled: March 7, 2016Publication date: January 24, 2019Applicant: Mitsubishi Electric CorporationInventors: Tomohiko NAGASHIMA, Yoshihito ASAO
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Publication number: 20190016373Abstract: Problem In an electric power steering device that includes a filter section, the electric power steering device in which a motor and a control unit are integrated with each other, a device that aims to improve the noise suppression function of the filter section and improve workability is provided. Solution In an electric power steering device that includes a filter section, the electric power steering device in which a motor and a control unit are integrated with each other, the control unit includes a filter module forming the filter section connected near a connector for power supply placed in an outermost portion, and this filter module is configured with wiring for electric conduction, coils and, and a filter substrate on which capacitors are mounted.Type: ApplicationFiled: March 14, 2016Publication date: January 17, 2019Applicant: Mitsubishi Electric CorporationInventors: Kentaro URIMOTO, Tomohiko NAGASHIMA, Yoshihito ASAO