Patents by Inventor Norihisa Imaizumi
Norihisa Imaizumi 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).
-
Patent number: 11824475Abstract: A motor control device controls a motor. The motor control device is provided separate from the motor. The motor control device includes a switch provided in an electrical conduction path for the motor. The motor control device detects a temperature of the switch. The motor control device controls the switch between an on state and an off state.Type: GrantFiled: June 30, 2021Date of Patent: November 21, 2023Assignee: DENSO CORPORATIONInventors: Kenji Matsuda, Norihisa Imaizumi, Tatsuya Kakehi
-
Patent number: 11368057Abstract: A motor includes a rotor rotatable about a central axis, and a stator opposing the rotor in a radial direction. The stator includes an annular core back and a stator core including teeth extending from the core back to one side in the radial direction. The stator core includes a laminated steel sheet in which electromagnetic steel sheets are laminated in a direction of the central axis. Each of the electromagnetic steel sheets includes a caulking dowel portion to which the adjacent electromagnetic steel sheets are connected by press-fitting. The caulking dowel portion includes a protrusion protruding from the core back to another side in the radial direction.Type: GrantFiled: September 20, 2019Date of Patent: June 21, 2022Assignee: NIDEC SERVO CORPORATIONInventors: Norihisa Imaizumi, Tsuyoshi Nakagawa
-
Publication number: 20220115283Abstract: A semiconductor package includes a semiconductor chip, a heat radiating member on which the semiconductor chip is mounted, and a sealing member sealing the semiconductor chip. The sealing member is made of a liquid crystal polymer.Type: ApplicationFiled: December 22, 2021Publication date: April 14, 2022Inventors: Akihiro YAMAGUCHI, Norihisa IMAIZUMI, Ryuma KAMIKOMAKI, Kouji KONDOH, Hirotaka MIYANO, Tomohiro YOKOCHI, Gentarou MASUDA
-
Patent number: 11177714Abstract: A motor includes a rotor rotatable about a central axis, and a stator opposing the rotor in a radial direction. The stator includes a stator core including an annular core back and teeth extending in the radial direction from the core back, bobbins attachable to the teeth, respectively, in the radial direction, a coil wire wound around the bobbin, the bobbin including a cylindrical tube portion extending in the radial direction and a protruding piece that protrudes in the radial direction from an upper end, close to the core back, of the tube portion and is fixed to the core back, and an annular fixing member covering the core back and the protruding piece from an upper side.Type: GrantFiled: September 20, 2019Date of Patent: November 16, 2021Assignee: NIDEC SERVO CORPORATIONInventors: Norihisa Imaizumi, Tsuyoshi Nakagawa
-
Publication number: 20210328539Abstract: A motor control device controls a motor. The motor control device is provided separate from the motor. The motor control device includes a switch provided in an electrical conduction path for the motor. The motor control device detects a temperature of the switch. The motor control device controls the switch between an on state and an off state.Type: ApplicationFiled: June 30, 2021Publication date: October 21, 2021Inventors: Kenji MATSUDA, Norihisa Imaizumi, Tatsuya Kakehi
-
Publication number: 20200106310Abstract: A motor includes a rotor rotatable about a central axis, and a stator opposing the rotor in a radial direction. The stator includes an annular core back and a stator core including teeth extending from the core back to one side in the radial direction. The stator core includes a laminated steel sheet in which electromagnetic steel sheets are laminated in a direction of the central axis. Each of the electromagnetic steel sheets includes a caulking dowel portion to which the adjacent electromagnetic steel sheets are connected by press-fitting. The caulking dowel portion includes a protrusion protruding from the core back to another side in the radial direction.Type: ApplicationFiled: September 20, 2019Publication date: April 2, 2020Inventors: Norihisa IMAIZUMI, Tsuyoshi NAKAGAWA
-
Publication number: 20200106309Abstract: A motor includes a rotor rotatable about a central axis, and a stator opposing the rotor in a radial direction. The stator includes an annular core back and a stator core including teeth extending from the core back in the radial direction. The stator core includes a laminated steel sheet in which electromagnetic steel sheets are laminated in a direction of the central axis, a first anti-rust layer covering a surface of the laminated steel sheet, and a second anti-rust layer covering a surface of the first anti-rust layer. The first anti-rust layer includes an impregnated adhesive, and the second anti-rust layer includes a solid lubricant.Type: ApplicationFiled: September 20, 2019Publication date: April 2, 2020Inventors: Norihisa IMAIZUMI, Tsuyoshi NAKAGAWA
-
Publication number: 20200106349Abstract: A motor includes a rotor rotatable about a central axis, and a stator opposing the rotor in a radial direction. The stator includes a stator core including an annular core back and teeth extending in the radial direction from the core back, bobbins attachable to the teeth, respectively, in the radial direction, a coil wire wound around the bobbin, the bobbin including a cylindrical tube portion extending in the radial direction and a protruding piece that protrudes in the radial direction from an upper end, close to the core back, of the tube portion and is fixed to the core back, and an annular fixing member covering the core back and the protruding piece from an upper side.Type: ApplicationFiled: September 20, 2019Publication date: April 2, 2020Inventors: Norihisa IMAIZUMI, Tsuyoshi NAKAGAWA
-
Publication number: 20190103782Abstract: A stator includes a core back that has an annular shape and that extends in a circumferential direction about a central axis that extends in a vertical direction, teeth that extend in a radial direction from the core back, bobbins attachable in the radial direction to the teeth, and coil wires wound around the bobbins. The bobbins each include a cylindrical portion that extends in the radial direction and a protrusion that protrudes in the radial direction from an upper end portion of the cylindrical portion on a core back side and that is fixed to the core back.Type: ApplicationFiled: September 26, 2018Publication date: April 4, 2019Inventor: Norihisa IMAIZUMI
-
Publication number: 20190103781Abstract: A motor includes a rotor that rotates about a central axis and a stator that opposes the rotor in a radial direction. The stator includes a stator core with a core back, which has an annular shape, and teeth extending in the radial direction from the core back, bobbins each attached to a corresponding one of the teeth, and coil wires wound around the bobbins. The stator includes winding groups in which one coil wire is wound around the bobbins, and a number of poles of the rotor and a number of slots of the stator are 10 poles and 12 slots, 28 poles and 24 slots, 42 poles and 36 slots, or 44 poles and 33 slots.Type: ApplicationFiled: September 18, 2018Publication date: April 4, 2019Inventor: Norihisa IMAIZUMI
-
Publication number: 20190016449Abstract: As one aspect of this multicopter, the multicopter flies on the basis of information from a flight controller and is provided with the following: a main body section; a plurality of propulsion units having rotating rotary wing, the propulsion units being attached to the main body section; motors installed in the main body section or the propulsion units; at least one first detection unit that detects motor information; and a wireless transmission unit that wirelessly transmits, to the outside, the motor information detected by the first detection unit.Type: ApplicationFiled: June 29, 2018Publication date: January 17, 2019Applicant: NIDEC CORPORATIONInventors: Norihisa IMAIZUMI, Hiroshi ITO
-
Publication number: 20180370642Abstract: As one embodiment of this motor, the motor is mounted in a multicopter and is provided with: a rotating section that rotates around a rotation axis that extends in one direction; a stationary section that is attached to a main body section of the multicopter; at least one first detection unit that detects motor information; and an output unit that outputs, to the outside, the motor information detected by the first detection unit.Type: ApplicationFiled: June 29, 2018Publication date: December 27, 2018Applicant: NIDEC CORPORATIONInventors: Norihisa IMAIZUMI, Hiroshi ITO
-
Patent number: 9941182Abstract: In a substrate, at least one lateral surface between one surface and another surface is a cut surface that is cut together with mold resin. The mold resin, which is cut together with the substrate, is provided with a surface that is flush with the cut surface. A portion of the mold resin constituting the surface flush with the cut surface has a surface that is joined to the surface flush with the cut surface and parallel to the one surface of the substrate; this portion is thinner than a portion that seals electronic parts. Consequently, the mold resin is cut with a dicing blade brought into contact with a surface parallel to the one surface of the substrate.Type: GrantFiled: June 3, 2014Date of Patent: April 10, 2018Assignee: DENSO CORPORATIONInventors: Norihisa Imaizumi, Yuuki Sanada, Masayuki Takenaka, Shinya Uchibori, Kengo Oka, Tasuke Fukuda, Keitarou Nakama
-
Patent number: 9686854Abstract: In an electronic device, a heat generating element is connected directly to an electrically-conductive joining material that is the start point of the heat dissipation path on the one surface of the substrate, and the other surface of the substrate is provided by an other surface side insulating layer. An electrically-conductive other surface side electrode connected to an external heat dissipation member is disposed on the surface of the other surface side insulating layer right under the heat generating element. On the other surface side of the substrate, an other surface side inner layer wire that is the end point of the heat dissipation path extends to the other surface side insulating layer and is insulated electrically from the other surface side electrode through the other surface side insulating layer.Type: GrantFiled: September 24, 2013Date of Patent: June 20, 2017Assignee: DENSO CORPORATIONInventors: Yuuki Sanada, Norihisa Imaizumi, Shinya Uchibori, Masaji Imada, Toshihiro Nakamura, Eiji Yabuta, Masayuki Takenaka
-
Patent number: 9473007Abstract: A rotary solenoid includes a swing yoke to which two magnets are fixed and a fixed yoke including projection portions at opposite sides thereof. An electromagnetic coil including a major magnetic pole is arranged at a center of the fixed yoke. The rotary solenoid is arranged to define a magnetic circuit extending through one of the magnets, the major magnetic pole, the fixed yoke, the projection portion, and the other magnet at a shortest distance.Type: GrantFiled: February 14, 2012Date of Patent: October 18, 2016Assignee: NIDEC SERVO CORPORATIONInventors: Takeshi Kirihara, Takaya Kato, Osamu Sekiguchi, Norihisa Imaizumi, Shoji Oiwa
-
Publication number: 20160163613Abstract: An electronic apparatus includes a board, a first electronic component, a mold resin and a second electronic component. The board has a first surface and a second surface opposite to the first surface. The first electronic component is mounted on the first surface of the board. The mold resin seals the first electronic component and the first surface of the board. The second electronic component is arranged on the mold resin.Type: ApplicationFiled: June 24, 2014Publication date: June 9, 2016Inventors: Shinya UCHIBORI, Norihisa IMAIZUMI, Masayuki TAKENAKA
-
Publication number: 20160150655Abstract: An electronic apparatus includes a board, an electronic component, a mold resin a rod-like connection terminal and a case. The board includes: a first surface; a second surface, which is opposite to the first surface; a wire pattern; and a through-hole having a metal member connected to the wire pattern. The electronic component mounted on the first surface of the board. The mold resin seals the electronic component on the first surface of the board. The rod-like connection terminal inserted into the through-hole from a distal end of the through-hole and electrically connected to the metal member. The case having a surface on which the connection terminal stands and accommodating the board on which the electronic component is mounted. The board is arranged such that the first surface on which the electronic component and the mold resin are arranged faces the surface of the case on which the connection terminal stands.Type: ApplicationFiled: June 17, 2014Publication date: May 26, 2016Inventors: Masayuki TAKENAKA, Norihisa IMAIZUMI, Toshihiro NAKAMURA
-
Publication number: 20160104653Abstract: In a substrate, at least one lateral surface between one surface and another surface is a cut surface that is cut together with mold resin. The mold resin, which is cut together with the substrate, is provided with a surface that is flush with the cut surface. A portion of the mold resin constituting the surface flush with the cut surface has a surface that is joined to the surface flush with the cut surface and parallel to the one surface of the substrate; this portion is thinner than a portion that seals electronic parts. Consequently, the mold resin is cut with a dicing blade brought into contact with a surface parallel to the one surface of the substrate.Type: ApplicationFiled: June 3, 2014Publication date: April 14, 2016Inventors: Norihisa IMAIZUMI, Yuuki SANADA, Masayuki TAKENAKA, Shinya UCHIBORI, Kengo OKA, Tasuke FUKUDA, Keitarou NAKAMA
-
Publication number: 20150319840Abstract: In an electronic device, a heat generating element is connected directly to an electrically-conductive joining material that is the start point of the heat dissipation path on the one surface of the substrate, and the other surface of the substrate is provided by an other surface side insulating layer. An electrically-conductive other surface side electrode connected to an external heat dissipation member is disposed on the surface of the other surface side insulating layer right under the heat generating element. On the other surface side of the substrate, an other surface side inner layer wire that is the end point of the heat dissipation path extends to the other surface side insulating layer and is insulated electrically from the other surface side electrode through the other surface side insulating layer.Type: ApplicationFiled: September 24, 2013Publication date: November 5, 2015Inventors: Yuuki SANADA, Norihisa IMAIZUMI, Shinya UCHIBORI, Masaji IMADA, Toshihiro NAKAMURA, Eiji YABUTA, Masayuki TAKENAKA
-
Patent number: 9087924Abstract: An electronic device includes: a substrate having first and second surfaces, wherein the first surface is opposite to the second surface; a first electronic element mounted on the first surface of the substrate; a second electronic element mounted on the second surface of the substrate; and a resin mold sealing the first electronic element and the first surface of the substrate. The resin mold further seals the second electronic element on the second surface of the substrate. The second surface of the substrate has a portion, which is exposed from the resin mold. The second electronic element is not disposed on the portion of the second surface.Type: GrantFiled: April 9, 2014Date of Patent: July 21, 2015Assignee: DENSO CORPORATIONInventors: Tetsuto Yamagishi, Tohru Nomura, Norihisa Imaizumi, Yasutomi Asai