Patents by Inventor Takahisa Kawaguchi
Takahisa Kawaguchi 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: 20230318387Abstract: The objective of the present disclosure is to realize downsizing of the bus-bar holder, and then to downsize an electric rotating machine apparatus and an electric power steering apparatus. In a first protruding portion of the bus-bar holder, there are provided a columnar portion, two or more first ribs that are provided on an outer circumferential surface of the columnar portion in such a way as to be parallel with a center axis of the columnar portion and in such a way as to be spaced apart from one another, and two or more second ribs; the first rib makes contact with an inner circumference surface of a first through hole of the control circuit board; the second rib makes contact with an inner circumference surface of a second through hole of the bus bar.Type: ApplicationFiled: August 17, 2020Publication date: October 5, 2023Applicant: Mitsubishi Electric CorporationInventors: Naohiro MOTOISHI, Takahisa KAWAGUCHI, Kentaro URIMOTO
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Publication number: 20230049080Abstract: In an electric rotating machine apparatus according to the present disclosure, noise-removal capability is secured by adopting a structure in which an external terminal is connected with a protruding portion, of a control circuit board in a control unit, that protrudes from a through hole of an electromagnetic shield and in which a filter unit is provided. Because a conventional dedicated wiring board for mounting the filter unit thereon is not required, the foregoing structure can contribute to downsizing and cost reduction. In addition, the foregoing structure can contribute to downsizing and cost reduction of an electric power steering apparatus equipped with the electric rotating machine apparatus according to the present disclosure.Type: ApplicationFiled: March 27, 2020Publication date: February 16, 2023Applicant: Mitsubishi Electric CorporationInventors: Naohiro MOTOISHI, Takahisa KAWAGUCHI, Kentaro URIMOTO, Akira KIMISHIMA, Satoshi IOHARA, Yoshikuni TOMIOKA
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Publication number: 20230032809Abstract: An electric rotating machine apparatus includes an electric rotating machine having a windings and an output axle, a power module having a switching device connected with the winding, a bus bar that is held by a bus-bar holder and is included in a power-supply path to the power module, two or more smoothing capacitors connected with the bus bar, and a capacitor holder in which at a more outer side in the radial direction of the electric rotating machine than the bus-bar holder is, the two or more smoothing capacitors are arranged in the axial direction of the electric rotating machine, and that holds the two or more smoothing capacitors from the outer circumferential side of the electric rotating machine.Type: ApplicationFiled: January 16, 2020Publication date: February 2, 2023Applicant: Mitsubishi Electric CorporationInventors: Junya SUZUKI, Akira KIMISHIMA, Takahisa KAWAGUCHI, Takanori ICHIKAWA
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Patent number: 11565741Abstract: In an electric power steering, a control unit includes a first power module configured to supply current to first motor windings, a first control board configured to output a control signal to the first power module, a second power module configured to supply current to second motor windings, a second control board configured to output a control signal to the second power module, and a heat sink. The heat sink includes a column portion having a plurality of mounting portions defined by flat surfaces parallel to the axial direction of the output shaft. The first control board and the second control board are each mounted along a corresponding one of one pair of opposing mounting portions, and the first power module and the second power module are each mounted along a corresponding one of another pair of opposing mounting portions.Type: GrantFiled: October 13, 2017Date of Patent: January 31, 2023Assignee: Mitsubishi Electric CorporationInventors: Takanori Ichikawa, Satoshi Iohara, Akira Kimishima, Takahisa Kawaguchi, Kentaro Urimoto
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Patent number: 11540401Abstract: An electronic control device includes first extended terminals extended from a multiple of terminals of opposing connectors respectively and second extended terminals extended from opposing control boards respectively. A hole is formed between the opposing connectors in a connector case, each of the first extended terminals and each of the second extended terminals oppose and approach each other toward the hole, in addition to which first extended terminals and second extended terminals are formed heading toward an exterior of the connector case from the hole, and the first extended terminal and the first extended terminal come into contact with differing side faces of the second extended terminal and the second extended terminal.Type: GrantFiled: August 2, 2018Date of Patent: December 27, 2022Assignee: Mitsubishi Electric CornorationInventors: Kentaro Urimoto, Akira Kimishima, Takahisa Kawaguchi, Takanori Ichikawa
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Patent number: 11465669Abstract: An electric power steering device includes a motor and a control unit that are arranged coaxially with each other in an axial direction of an output shaft and integrated with each other. The control unit includes power modules configured to supply current to the motor, a heat sink, a control board configured to output a control signal to the power modules, and a rotation sensor. The power modules, a column portion of the heat sink, and the control board are arranged in parallel to the axial direction of the output shaft. The rotation sensor is provided in a recess formed in a base portion of the heat sink at an opposite position to a sensor rotor mounted to an end portion of the output shaft on the control unit side.Type: GrantFiled: September 28, 2017Date of Patent: October 11, 2022Assignee: Mitsubishi Electric CornorationInventors: Takanori Ichikawa, Akira Kimishima, Satoshi Iohara, Takahisa Kawaguchi, Kentaro Urimoto
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Publication number: 20220209612Abstract: Provided is an electric driving device including a first protruding portion protruding from a holder surface. A plate-like portion has an opposed surface opposed to the holder surface. A first through hole in the plate-like portion is defined by a first through hole forming portion formed in a cylindrical shape so as to project from the plate-like portion to a side opposite to the opposed surface. The first through hole has an inner surface including a first hole inclined inner surface and a first hole cylindrical inner surface extending from the first hole inclined inner surface to the end portion of the first through hole forming portion. The first protruding portion is press-fitted into the first through hole under a state in which a plurality of first ribs are in contact with the first hole cylindrical inner surface.Type: ApplicationFiled: June 27, 2019Publication date: June 30, 2022Applicant: Mitsubishi Electric CorporationInventors: Junya SUZUKI, Akira KIMISHIMA, Takahisa KAWAGUCHI, Takanori ICHIKAWA, Kentaro URIMOTO
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Publication number: 20220185363Abstract: Each of a power-source bus bar and a grounding bus bar provided in a driving apparatus has a terminal portion to be connected with output terminals of a power module and a bending portion bent in a direction perpendicular to a first surface of a bus bar holder; the bending portion is disposed between a smoothing capacitor and the power module; the power-source bus bar and the grounding bus bar are arranged in such a way as to face each other.Type: ApplicationFiled: June 28, 2019Publication date: June 16, 2022Applicant: Mitsubishi Electric CorporationInventors: Junya SUZUKI, Akira KIMISHIMA, Takahisa KAWAGUCHI, Takanori ICHIKAWA, Kentaro URIMOTO
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Publication number: 20210371006Abstract: An electric power steering device includes a motor and a control unit that are arranged coaxially with each other in an axial direction of an output shaft and integrated with each other. The control unit includes power modules configured to supply current to the motor, a heat sink, a control board configured to output a control signal to the power modules, and a rotation sensor. The power modules, a column portion of the heat sink, and the control board are arranged in parallel to the axial direction of the output shaft. The rotation sensor is provided in a recess formed in a base portion of the heat sink at an opposite position to a sensor rotor mounted to an end portion of the output shaft on the control unit side.Type: ApplicationFiled: September 28, 2017Publication date: December 2, 2021Applicant: Mitsubishi Electric CorporationInventors: Takanori ICHIKAWA, Akira KIMISHIMA, Satoshi IOHARA, Takahisa KAWAGUCHI, Kentaro URIMOTO
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Publication number: 20210362771Abstract: In an electric power steering, a control unit includes a first power module configured to supply current to first motor windings, a first control board configured to output a control signal to the first power module, a second power module configured to supply current to second motor windings, a second control board configured to output a control signal to the second power module, and a heat sink. The heat sink includes a column portion having a plurality of mounting portions defined by flat surfaces parallel to the axial direction of the output shaft. The first control board and the second control board are each mounted along a corresponding one of one pair of opposing mounting portions, and the first power module and the second power module are each mounted along a corresponding one of another pair of opposing mounting portions.Type: ApplicationFiled: October 13, 2017Publication date: November 25, 2021Applicant: Mitsubishi Electric CorporationInventors: Takanori ICHIKAWA, Satoshi IOHARA, Akira KIMISHIMA, Takahisa KAWAGUCHI, Kentaro URIMOTO
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Publication number: 20210153367Abstract: An electronic control device includes first extended terminals extended from a multiple of terminals of opposing connectors respectively and second extended terminals extended from opposing control boards respectively. A hole is formed between the opposing connectors in a connector case, each of the first extended terminals and each of the second extended terminals oppose and approach each other toward the hole, in addition to which first extended terminals and second extended terminals are formed heading toward an exterior of the connector case from the hole, and the first extended terminal and the first extended terminal come into contact with differing side faces of the second extended terminal and the second extended terminal.Type: ApplicationFiled: August 2, 2018Publication date: May 20, 2021Applicant: Mitsubishi Electric CorporationInventors: Kentaro URIMOTO, Akira KIMISHIMA, Takahisa KAWAGUCHI, Takanori ICHIKAWA
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Patent number: 11005197Abstract: In a control unit having a press-fit structure, a substrate includes: a connected portion to which the press-fit terminal is connected; and a guide portion extending from the substrate around the connected portion. The press-fit terminal includes: a tip end portion; a contact portion adjacent to the tip end portion; and an enlarged portion. The guide portion includes: an opening portion; a guide hole extending from the opening portion to the substrate; a tapered surface formed on an inner side of the opening portion; and a reduced-hole portion formed continuous to the tapered surface. The tip end portion of the press-fit terminal is configured such that the contact portion is positioned with respect to the connected portion while the enlarged portion is guided by the tapered surface and an inner wall of the reduced-hole portion.Type: GrantFiled: March 6, 2017Date of Patent: May 11, 2021Assignee: Mitsubishi Electric CorporationInventors: Kentaro Urimoto, Takahisa Kawaguchi
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Publication number: 20210075301Abstract: There is provided an electric power steering apparatus in which constituent elements of a control unit for controlling one of 2 winding groups of a motor and constituent elements of a control unit for controlling the other one thereof are arranged in point symmetry with respect to a center axis of an output shaft or in line symmetry with respect to a virtual straight line perpendicular to a direction in which the output shaft extends.Type: ApplicationFiled: August 24, 2018Publication date: March 11, 2021Applicant: Mitsubishi Electric CorporationInventors: Takanori ICHIKAWA, Kengo FUJIMOTO, Takahisa KAWAGUCHI, Kentaro URIMOTO
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Patent number: 10734869Abstract: The present invention is concerning the control device equipped with a motor 2 and a control unit 1 which is coaxial to the motor 2. An upper frame 40 is arranged at a boundary between the motor 2 and the control unit 1. A semiconductor module 35, an intermediate member 50, and a control board 3 are provided in the control unit 1. For assembly of the semiconductor module 35 and the intermediate member 50, a latch portion 35f is provided on one of the semiconductor module 35 and the intermediate member 50, and an engaged portion into which the latch portion 35f locks is provided on the other of the semiconductor module 35 and the intermediate member 50, whereby positioning of the semiconductor module 35 and the intermediate member 50 is achieved.Type: GrantFiled: April 27, 2015Date of Patent: August 4, 2020Assignee: Mitsubishi Electric CorporationInventors: Takahisa Kawaguchi, Kazuhisa Takashima
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Patent number: 10727619Abstract: In a control unit including a press-fit terminal, a substrate includes: a connected portion into which the press-fit terminal is connected; and a guide member, which surrounds a periphery of the connected portion and extends from the substrate. The press-fit terminal includes: a connecting portion formed on a tip end side of the press-fit terminal; and an enlarged portion formed adjacent to the connecting portion. The guide member includes: an opening portion, which opens in a direction in which the press-fit terminal is positioned; a guide hole extending from the opening portion to the substrate; and a reduced-hole portion formed adjacent to the opening portion. The guide hole is configured such that, when the connecting portion of the press-fit terminal is connected to the connected portion of the substrate, the enlarged portion of the press-fit terminal closes the reduced-hole portion of the guide hole.Type: GrantFiled: March 6, 2017Date of Patent: July 28, 2020Assignee: Mitsubishi Electric CorporationInventors: Kentaro Urimoto, Takahisa Kawaguchi
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Publication number: 20200067214Abstract: In a control unit having a press-fit structure, a substrate includes: a connected portion to which the press-fit terminal is connected; and a guide portion extending from the substrate around the connected portion. The press-fit terminal includes: a tip end portion; a contact portion adjacent to the tip end portion; and an enlarged portion. The guide portion includes: an opening portion; a guide hole extending from the opening portion to the substrate; a tapered surface formed on an inner side of the opening portion; and a reduced-hole portion formed continuous to the tapered surface. The tip end portion of the press-fit terminal is configured such that the contact portion is positioned with respect to the connected portion while the enlarged portion is guided by the tapered surface and an inner wall of the reduced-hole portion.Type: ApplicationFiled: March 6, 2017Publication date: February 27, 2020Applicant: Mitsubishi Electric CorporationInventors: Kentaro URIMOTO, Takahisa KAWAGUCHI
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Publication number: 20190393629Abstract: In a control unit including a press-fit terminal, a substrate includes: a connected portion into which the press-fit terminal is connected; and a guide member, which surrounds a periphery of the connected portion and extends from the substrate. The press-fit terminal includes: a connecting portion formed on a tip end side of the press-fit terminal; and an enlarged portion formed adjacent to the connecting portion. The guide member includes: an opening portion, which opens in a direction in which the press-fit terminal is positioned; a guide hole extending from the opening portion to the substrate; and a reduced-hole portion formed adjacent to the opening portion. The guide hole is configured such that, when the connecting portion of the press-fit terminal is connected to the connected portion of the substrate, the enlarged portion of the press-fit terminal closes the reduced-hole portion of the guide hole.Type: ApplicationFiled: March 6, 2017Publication date: December 26, 2019Applicant: Mitsubishi Electric CorporationInventors: Kentaro URIMOTO, Takahisa KAWAGUCHI
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Publication number: 20180123431Abstract: The present invention is concerning the control device equipped with a motor 2 and a control unit 1 which is coaxial to the motor 2. An upper frame 40 is arranged at a boundary between the motor 2 and the control unit 1. A semiconductor module 35, an intermediate member 50, and a control board 3 are provided in the control unit 1. For assembly of the semiconductor module 35 and the intermediate member 50, a latch portion 35f is provided on one of the semiconductor module 35 and the intermediate member 50, and an engaged portion into which the latch portion 35f locks is provided on the other of the semiconductor module 35 and the intermediate member 50, whereby positioning of the semiconductor module 35 and the intermediate member 50 is achieved.Type: ApplicationFiled: April 27, 2015Publication date: May 3, 2018Applicant: Mitsubishi Electric CorporationInventors: Takahisa KAWAGUCHI, Kazuhisa TAKASHIMA
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Patent number: 5173829Abstract: A tape cassette of the present invention comprises an upper half and a lower half constituting a cassette body which rotatably contains a hub with a tape wound thereon, a slider disposed in such a manner as to cover the lower half for movement forward and backward, and a spring disposed to a front end portion of the lower half in order to urge the slider forward, a pair of retaining elements each having a projection formed on an outer side thereof being integrally connected to the lower half, the projections being engaged in a pair of first holes or a pair of second holes formed in front and rear portions of the slider to retain the slider urged by the spring, so that a pair of opening portions formed in the lower half can be opened and closed by a pair of opening portions formed in the slider, the height l.sub.1 of a perpendicular surface of each of the projections on the connecting side of the retaining elements being higher than the height l.sub.Type: GrantFiled: December 20, 1990Date of Patent: December 22, 1992Assignee: KAO CorporationInventors: Takahisa Kawaguchi, Haruomi Enomoto, Tatehiko Ikeda
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Patent number: 5156862Abstract: A bent pipe forming apparatus is provided for extruding and forming a fluid material into an annular member. The apparatus has a central mandrel and a die defining an annular gap between the mandrel and the die. One of the mandrel and the die is supported to move in a direction perpendicular to an axis of the mandrel. The movable mandrel or die is provided, on its outer periphery, with a guide circular surface integral therewith. An inner movable ring having inner and outer circular peripheries eccentric to each other is rotatably fitted on the guide surface. An outer movable ring having inner and outer circular peripheries eccentric to each other is rotatably fitted on the periphery of the inner movable ring. The outer movable ring is provided with an outer circular periphery which is rotatably fitted in a stationary circular guide surface. Driving motors are provided to independently move the inner and outer movable rings.Type: GrantFiled: April 9, 1991Date of Patent: October 20, 1992Assignee: Nemoto Project Industry Co., Ltd.Inventor: Takahisa Kawaguchi