Patents by Inventor Ryosuke Ishida

Ryosuke Ishida 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).

  • Publication number: 20210195728
    Abstract: An electronic control unit includes: a wiring substrate having a first surface on which a conductor wire is formed; a first electronic component that is implemented on the first surface of the wiring substrate, and has a large heat generation amount; a second electronic component that is implemented on the first surface of the wiring substrate, and has a heat generation amount smaller than the first electronic component; and a resin that covers the first electronic component, the second electronic component, and the first surface of the wiring substrate, and a second surface of the wiring substrate that is opposite to the first surface. A distance between an outer surface of the resin immediately below the first electronic component, and the second surface of the wiring substrate is longer than a distance between an outer surface of the resin immediately above the second electronic component, and the first surface of the wiring substrate.
    Type: Application
    Filed: June 27, 2019
    Publication date: June 24, 2021
    Inventors: Miki HIRAOKA, Ryosuke ISHIDA, Yoshio KAWAI
  • Patent number: 10781826
    Abstract: An axial fan includes an impeller, a motor, and a housing. The impeller is configured to rotate about a rotation axis extending in a vertical direction; a motor configured to rotationally drive the impeller. The housing is disposed radially outside the impeller and the motor. An inner wall surface of the housing includes a groove recessed radially outward and extending in the vertical direction. At least a first end of the groove in the vertical direction extends to one end of the housing in the vertical direction.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: September 22, 2020
    Assignee: NIDEC CORPORATION
    Inventors: Ryosuke Ishida, Jun Nagasawa
  • Patent number: 10767658
    Abstract: An axial fan according to an exemplary embodiment of the present disclosure includes an impeller, a motor, and a housing. The impeller is configured to rotate about a rotation axis extending in a vertical direction. The motor is configured to rotationally drive the impeller. The housing is disposed radially outside the impeller and the motor. In a region overlapping in the vertical direction with the impeller, an inner wall surface of the housing includes at least one first wall having a narrow gap with a radially outer edge of the impeller and at least one second wall having a wide gap with the radially outer edge of the impeller.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: September 8, 2020
    Assignee: NIDEC CORPORATION
    Inventor: Ryosuke Ishida
  • Patent number: 10700741
    Abstract: A correct commutation is realized even if a communication error occurs due to a change in an actuator drive current. An electronic control unit that includes a communication section outputting a control signal and that can transmit the control signal to an actuator connected to the electronic control unit via a power line, includes an actuator operation detection section. When the actuator operation detection section detects an actuator operation, the communication section retransmits the control signal at timing of detecting the actuator operation.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: June 30, 2020
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Hiroki Yamashita, Taizo Yamawaki, Hidehiro Toyoda, Teppei Hirotsu, Ryosuke Ishida, Hirofumi Kurimoto, Kenichi Hoshino
  • Publication number: 20200059264
    Abstract: A correct commutation is realized even if a communication error occurs due to a change in an actuator drive current. An electronic control unit that includes a communication section outputting a control signal and that can transmit the control signal to an actuator connected to the electronic control unit via a power line, includes an actuator operation detection section. When the actuator operation detection section detects an actuator operation, the communication section retransmits the control signal at timing of detecting the actuator operation.
    Type: Application
    Filed: July 6, 2017
    Publication date: February 20, 2020
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Hiroki YAMASHITA, Taizo YAMAWAKI, Hidehiro TOYODA, Teppei HIROTSU, Ryosuke ISHIDA, Hirofumi KURIMOTO, Kenichi HOSHINO
  • Patent number: 10498395
    Abstract: A power line communication apparatus includes a drive block including an actuator control circuit and a drive circuit and a communication block. The actuator control circuit generates a control pulse for controlling an actuator, and controls a transition timing of the control pulse during an operation period set within a communication cycle by a communication clock. The drive circuit controls a driving current of the actuator supplied from a DC power source through a power line based on the control pulse in which the transition timing is controlled. The communication block generates the communication clock, and modulates a current flowing through the power line in response to data to be transmitted during a signal transmission period different from the operation period, set within the communication cycle.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: December 3, 2019
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Hiroki Yamashita, Taizo Yamawaki, Ming Liu, Teppei Hirotsu, Ryosuke Ishida, Hirofumi Kurimoto
  • Patent number: 10340799
    Abstract: A step-up/down power supply, in which a circuit area is small, includes a step-down unit that generates an output voltage lower than an input voltage by turning on or off a step-down switch in which the input voltage of the step-up/down power supply is applied, and a step-up unit that generates an output voltage higher than the input voltage by turning on or off a step-up switch in which a ground is applied. A step-down gate voltage control circuit controls a gate voltage of the step-down switch and includes a gate voltage generating circuit that generates a first voltage and a second voltage for turning on the step-down switch. A gate voltage switching circuit switches between the first voltage and the second voltage, and the gate voltage generating circuit includes a first voltage source that generates the first voltage and a second voltage source that generates the second voltage.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: July 2, 2019
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Ming Liu, Shinya Kajiyama, Taizo Yamawaki, Ryosuke Ishida, Hirofumi Kurimoto, Yasushi Sugiyama
  • Patent number: 10340833
    Abstract: To achieve, in a load drive device including an H-bridge circuit, miniaturization of a capacitor or/and the constituent elements of the H-bridge circuit (e.g., reduction in volume) with circuit elements, for example, switching elements included in the H-bridge circuit, being inhibited from breaking down or destroying even in a case where a load is overloaded. The invention is disclosed in which, as a solution to the achievement, first and second modes are provided as a switching mode for the switching elements 11, 12, 13, and 14 and switching is appropriately performed between the first and second modes.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: July 2, 2019
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Ming Liu, Taizo Yamawaki, Takuya Mayuzumi, Ryosuke Ishida, Yasushi Sugiyama, Goichi Ono
  • Publication number: 20190145429
    Abstract: An axial fan includes an impeller rotatable about a central axis extending in a vertical direction, a motor, and a housing. The motor includes a stator and a rotor. The impeller includes blades on a radially outer surface of an impeller cup fixed to the rotor. The housing includes a motor base portion below the motor to support the stator, a tubular portion radially outside of the impeller, a first rib below the blades to join the motor base portion to the tubular portion, and a second rib being annular, centered on the central axis, and joined to the first rib. A lower edge of each blade includes a first blade region that is convex downward. A radially inner end of the second rib is radially outward of a lower end of the first blade region.
    Type: Application
    Filed: October 22, 2018
    Publication date: May 16, 2019
    Inventor: Ryosuke ISHIDA
  • Patent number: 10221945
    Abstract: The present invention addresses the problem of obtaining an electronic control device for a vehicular automatic transmission that suppresses sudden acceleration, sudden deceleration, and gear shift shock that occur when the transmission moves into a fail-safe mode due to the electronic control device stopping during a main CPU abnormality. An electronic control device 100 for a vehicular automatic transmission has: a main CPU 3 that performs gear shift control for the vehicular automatic transmission; and a sub-CPU 4 that detects abnormalities in the main CPU 3. When the sub-CPU 4 detects an abnormality in the main CPU 3 while the vehicle is traveling, the sub-CPU 4 stops the gear shift control executed by the main CPU 3.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: March 5, 2019
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Kenichi Hoshino, Ryosuke Ishida, Hideki Sekiguchi
  • Publication number: 20190036408
    Abstract: A motor includes a rotor that is rotatable around a center axis, a stator that opposes the rotor, and a bracket. The bracket includes a cylindrical portion that accommodates the stator and that extends in an axial direction. The stator includes a stator core, an insulator that covers the stator core, a coil portion, and a terminal portion. The coil portion is formed from a conducting wire wound around the stator core via the insulator. The terminal portion is connected to a substrate, an end portion of the coil portion being bound on the terminal portion. The insulator includes a first protruding portion, at least a part of the first protruding portion protruding towards a radial-direction outer side than the cylindrical portion. Outside the cylindrical portion, the terminal portion is provided at the first protruding portion.
    Type: Application
    Filed: June 13, 2018
    Publication date: January 31, 2019
    Inventors: Yusuke IWAI, Ryosuke ISHIDA, Masakazu TANIKAWA
  • Publication number: 20190007100
    Abstract: A power line communication apparatus includes a drive block including an actuator control circuit and a drive circuit and a communication block. The actuator control circuit generates a control pulse for controlling an actuator, and controls a transition timing of the control pulse during an operation period set within a communication cycle by a communication clock. The drive circuit controls a driving current of the actuator supplied from a DC power source through a power line based on the control pulse in which the transition timing is controlled. The communication block generates the communication clock, and modulates a current flowing through the power line in response to data to be transmitted during a signal transmission period different from the operation period, set within the communication cycle.
    Type: Application
    Filed: January 4, 2016
    Publication date: January 3, 2019
    Inventors: Hiroki YAMASHITA, Taizo YAMAWAKI, Ming LIU, Teppei HIROTSU, Ryosuke ISHIDA, Hirofumi KURIMOTO
  • Publication number: 20180316268
    Abstract: A step-up/down power supply, in which a circuit area is small, includes a step-down unit that generates an output voltage lower than an input voltage by turning on or off a step-down switch in which the input voltage of the step-up/down power supply is applied, and a step-up unit that generates an output voltage higher than the input voltage by turning on or off a step-up switch in which a ground is applied. A step-down gate voltage control circuit controls a gate voltage of the step-down switch and includes a gate voltage generating circuit that generates a first voltage and a second voltage for turning on the step-down switch. A gate voltage switching circuit switches between the first voltage and the second voltage, and the gate voltage generating circuit includes a first voltage source that generates the first voltage and a second voltage source that generates the second voltage.
    Type: Application
    Filed: September 28, 2016
    Publication date: November 1, 2018
    Inventors: Ming LIU, Shinya KAJIYAMA, Taizo YAMAWAKI, Ryosuke ISHIDA, Hirofumi KURIMOTO, Yasushi SUGIYAMA
  • Publication number: 20180233988
    Abstract: A motor includes a bearing holder for holding a bearing that rotatably supports a rotary shaft extending in the vertical direction, a bracket for holding the bearing holder, a circuit board having electronic components mounted thereon, and board fixing portions for fixing the circuit board to the bracket. The circuit board has a first region representing part of a mounting surface having the electronic components mounted thereon in the circumferential direction and a second region representing a region of the mounting surface other than the first region. The total weight of the electronic components mounted in the first region is greater than that in the second region. The number of the board fixing portions that fix the circuit board in the first region is greater than the number of the board fixing portions that fix the circuit board in the second region.
    Type: Application
    Filed: February 7, 2018
    Publication date: August 16, 2018
    Inventors: Ryosuke ISHIDA, Kenta MOMEN
  • Publication number: 20180233989
    Abstract: A motor includes a rotor including a rotary shaft that extends in the vertical direction, a stator that faces the rotor, a bearing for supporting the rotary shaft for rotation, a bearing holder for holding the bearing, a bracket for holding the bearing holder, and a circuit board having electronic components mounted thereon. The electronic components include a converter, an inverter, and a detection unit. The detection unit detects the rotation angle of the rotor on the basis of an induced voltage generated in the stator due to rotation of the rotor. The bracket includes a holding member that holds the lower end of the bearing holder. The circuit board is disposed under the holding member in the axial direction. The electronic components are disposed on the lower surface of the circuit board.
    Type: Application
    Filed: February 7, 2018
    Publication date: August 16, 2018
    Inventor: Ryosuke ISHIDA
  • Patent number: 10044494
    Abstract: The present invention achieves, using simple circuits, timing synchronization among ECUs of an electronic control device which is configured from a driver ECU, a sensor ECU, and an integrated ECU which are connected over a network. This electronic control device is provided with a driver ECU for driving various loads for vehicular control, a sensor ECU for sampling various sensor signals, and an integrated ECU which is connected to the driver ECU and sensor ECU over a network and calculates command values to the various loads in accordance with various sensor data, the electronic control device being characterized in that the driver ECU has timer D for generating internal timing, the sensor ECU has timer S for generating internal timing, and the integrated ECU has timer M serving as a reference for timer D and timer S.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: August 7, 2018
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Teppei Hirotsu, Ryosuke Ishida
  • Publication number: 20180209429
    Abstract: A motor includes a body portion, a circuit board, and a guide portion. The body portion includes a rotor rotating around a center axis extending in a top-bottom direction and having a magnet, and a stator facing the magnet in a radial direction. The circuit board is disposed below the body portion and has an electronic component mounted thereon. The guide portion guides an airflow circulating downward in the top-bottom direction toward inside in the radial direction below the body portion. At least a part of the guide portion faces the electronic component in the radial direction.
    Type: Application
    Filed: January 11, 2018
    Publication date: July 26, 2018
    Inventor: Ryosuke ISHIDA
  • Publication number: 20180183375
    Abstract: To achieve, in a load drive device including an H-bridge circuit, miniaturization of a capacitor or/and the constituent elements of the H-bridge circuit (e.g., reduction in volume) with circuit elements, for example, switching elements included in the H-bridge circuit, being inhibited from breaking down or destroying even in a case where a load is overloaded. The invention is disclosed in which, as a solution to the achievement, first and second modes are provided as a switching mode for the switching elements 11, 12, 13, and 14 and switching is appropriately performed between the first and second modes.
    Type: Application
    Filed: April 12, 2016
    Publication date: June 28, 2018
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Ming LIU, Taizo YAMAWAKI, Takuya MAYUZUMI, Ryosuke ISHIDA, Yasushi SUGIYAMA, Goichi ONO
  • Patent number: 10002699
    Abstract: The present invention is to provide a magnet coil drive control device that can efficiently suppress conduction noise while reducing the capacitance of a capacitor. A capacitor and an impedance element are arranged in series on the connecting line connecting the positive electrode line and the negative electrode line of a DC power supply, the connecting line between the capacitor and the impedance element is connected to one end of a magnet coil via a freewheeling diode, and the portion between the freewheeling diode and the one end of the magnet coil is connected to the positive electrode line or the negative electrode line by a switching element. Conduction noise caused by the driving current of the magnet coil can be suppressed by the impedance element, and the capacitance of the capacitor can be further reduced. Accordingly, the magnet coil drive control device can be made smaller in size.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: June 19, 2018
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Kiyoshi Aiki, Ayumu Hatanaka, Takuya Mayuzumi, Katsuya Oyama, Ryosuke Ishida, Yasushi Sugiyama
  • Publication number: 20180135648
    Abstract: An axial fan according to an exemplary embodiment of the present disclosure includes an impeller, a motor, and a housing. The impeller is configured to rotate about a rotation axis extending in a vertical direction. The motor is configured to rotationally drive the impeller. The housing is disposed radially outside the impeller and the motor. In a region overlapping in the vertical direction with the impeller, an inner wall surface of the housing includes at least one first wall having a narrow gap with a radially outer edge of the impeller and at least one second wall having a wide gap with the radially outer edge of the impeller.
    Type: Application
    Filed: October 24, 2017
    Publication date: May 17, 2018
    Inventor: Ryosuke ISHIDA