Patents by Inventor Masahide Hayashi

Masahide Hayashi 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: 20200391318
    Abstract: What is provided is an electric resistance welded steel pipe manufacturing device that is configured to perform welding while forming a strip-shaped steel sheet in a tubular shape and supplying a plasma flow to a pair of abutment end surfaces to perform shielding. The electric resistance welded steel pipe manufacturing device includes a mandrel; and a plasma flow feeder that is provided in the mandrel to supply the plasma flow.
    Type: Application
    Filed: January 22, 2018
    Publication date: December 17, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Kotaro WATANABE, Hideki HAMATANI, Fuminori WATANABE, Kimiharu TANAKA, Yusuke TAKEDA, Yuya TOMONAGA, Yoshihiro HASHIMOTO, Masahide HAYASHI
  • Patent number: 10845194
    Abstract: The present invention addresses the problem of providing an inertial force detection device with which it is possible to diagnose sensor output without hindrance even when a vehicle is traveling. In order to solve this problem, there is provided an inertial force detection device for measuring inertial force according to a displacement amount of an oscillating body, wherein a diagnosis voltage that is synchronous with an output command signal inputted from the outside is applied. Furthermore, the period over which the diagnosis voltage is applied is shorter, by a prescribed period, than a cycle of the output command signal. Furthermore, at least one of the period over which the diagnosis voltage is applied, the diagnosis voltage, a diagnosis threshold value, and a filter characteristic is varied according to the cycle of the output command signal.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: November 24, 2020
    Assignee: HITACHI AUTOMOTIVES SYSTEMS, LTD.
    Inventors: Toshiaki Nakamura, Masahide Hayashi, Yasutaka Tsuru, Kazuo Ono
  • Patent number: 10551192
    Abstract: An inertial sensor having a simple configuration by vacuum sealing a resonator which detects acceleration and exploits a resonance vibration using a high Q value MEMS device. The sensor includes: a detecting proof mass and beam which detects acceleration; a driving electrode which excites the detecting proof mass and beam; a resonant frequency tuning electrode which changes the resonant frequency of the detecting proof mass and beam; and a detecting circuit which applies voltage to the resonant frequency tuning electrode for changing the resonant frequency to cancel a change of the resonant frequency of the detecting proof mass and beam when the acceleration is applied to the detecting proof mass and beam during the vibration of the detecting proof mass and beam by the voltage applied to the detecting proof mass and beam, and outputs the acceleration based on a value of the voltage applied to resonant frequency tuning electrode.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: February 4, 2020
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Daisuke Maeda, Heewon Jeong, Masahide Hayashi
  • Publication number: 20190195529
    Abstract: An indoor unit of an air-conditioning apparatus includes a housing defining an outer shape of the indoor unit, and a pipe hole-opening groove section that is in a form of grid-like grooves on an inner surface of the housing. The housing has a box-like shape and includes a lower one surface panel forming a lower end of one side surface of the housing, a one end bottom panel forming one end of a bottom surface of the housing, a lower other surface panel forming a lower end of the other side surface of the housing, and the other end bottom panel forming the other end of the bottom surface of the housing. The pipe hole-opening groove section is formed in at least one of the lower one surface panel, the one end bottom panel, the lower other surface panel, and the other end bottom panel.
    Type: Application
    Filed: August 1, 2016
    Publication date: June 27, 2019
    Inventors: Tsuyoshi HAYASHI, Yuki WATANABE, Masahide KINAMI
  • Patent number: 10324107
    Abstract: Provided is a highly reliable acceleration sensor having little 0-point drift. For example, an acceleration sensor having a support substrate having a first direction and a second direction orthogonal thereto in a single surface, a device layer disposed on the support substrate with a space interposed therebetween and having a weight that deforms according to the application of acceleration, and a cap layer disposed on the device layer with a space interposed therebetween, wherein a fixed part fixed to the support substrate is provided in the center of the weight, a beam is provided that extends from the fixed part and makes the weight mobile by being connected thereto, a plurality of posts for coupling the support substrate and the cap layer are disposed on the fixed part, and electric signals are applied to and received from the weight via the posts.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: June 18, 2019
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Heewon Jeong, Masahide Hayashi, Kiyoko Yamanaka, Daisuke Maeda
  • Patent number: 10315511
    Abstract: A vehicle includes a seat, an engine, a fuel tank, a canister connected to the fuel tank via a gas pipe, a breather pipe, and a drainpipe. The fuel tank is located lower than a seat surface of the seat. The canister adsorbs evaporation gas generated by evaporation of fuel inside the fuel tank. The breather pipe includes an inlet connected to the canister, and an outlet located at a higher position than the seat surface of the seat and open to the atmosphere. The drainpipe includes a drain hole located lower than the outlet, and branches from the breather pipe.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: June 11, 2019
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Tomoyuki Hayashi, Masahide Shinbori, Keisuke Imura
  • Publication number: 20190041214
    Abstract: The present invention addresses the problem of providing an inertial force detection device with which it is possible to diagnose sensor output without hindrance even when a vehicle is traveling. In order to solve this problem, there is provided an inertial force detection device for measuring inertial force according to a displacement amount of an oscillating body, wherein a diagnosis voltage that is synchronous with an output command signal inputted from the outside is applied. Furthermore, the period over which the diagnosis voltage is applied is shorter, by a prescribed period, than a cycle of the output command signal. Furthermore, at least one of the period over which the diagnosis voltage is applied, the diagnosis voltage, a diagnosis threshold value, and a filter characteristic is varied according to the cycle of the output command signal.
    Type: Application
    Filed: January 13, 2017
    Publication date: February 7, 2019
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Toshiaki NAKAMURA, Masahide HAYASHI, Yasutaka TSURU, Kazuo ONO
  • Publication number: 20180275159
    Abstract: To provide a physical quantity sensor having excellent reliability by reducing the influence of a force applied from the outside. Disclosed is a physical quantity sensor, which has a weight or a movable electrode formed on a device substrate, and an outer peripheral section that is disposed to surround the weight or the movable electrode, said weight or movable electrode being displaceable in the rotation direction in a plane. When the weight or the movable electrode is displaced in the rotation direction in the plane, the physical quantity sensor is provided with a rotation space at the outer peripheral section of an end portion of the weight or the movable electrode, said end portion being in the direction viewed from the center position of the weight or the movable electrode.
    Type: Application
    Filed: August 3, 2016
    Publication date: September 27, 2018
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Masatoshi KANAMARU, Daisuke MAEDA, Masahide HAYASHI, Masashi YURA, Akihiro OKAMOTO
  • Patent number: 9995762
    Abstract: Provided is a highly reliable acceleration sensor that keeps production costs low and has low zero point drift initially and over time even when used in a poor installation environment. In this acceleration sensor, a weight that rotates when acceleration is applied in the z-direction is disposed in a cavity surrounded by a support substrate and a cap layer. The cap layer is formed such that both sides thereof across the axis of rotation of the weight have different masses per unit area.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: June 12, 2018
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Masahide Hayashi, Heewon Jeong
  • Publication number: 20180156615
    Abstract: In an inertial sensor that includes an angular rate detection circuit having a structure synchronized with a resonant frequency of an angular rate detection element, an object thereof is to realize an angle output having high accuracy with less integration error in an integration circuit for detecting an angle. The inertial sensor includes an angular rate detection element chip C1 that has a mechanical structure for angular rate detection; and a signal processing LSI chip C2 that is angular rate detection circuit for detecting an angular rate from the angular rate detection element chip C1. The signal processing LSI chip C2 calculates an angle by sampling a signal obtained from the angular rate detection element chip C1 at a discrete time synchronized with a drive frequency of the angular rate detection element chip C1.
    Type: Application
    Filed: April 26, 2016
    Publication date: June 7, 2018
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Daisuke MAEDA, Kazuo ONO, Masahide HAYASHI
  • Patent number: 9970956
    Abstract: A movable part rotates about a rotation axis, which passes through a support, when an inertial force in a detecting direction is applied to an inertial sensor. The movable part includes a first region and a second region displaced in a direction opposite to a direction of the first region when the inertial force is applied. A second substrate includes first and second detection electrodes opposed to the first and second regions, respectively. The first detection electrode and the second detection electrode are provided symmetrically with respect to the rotation axis. A cavity is provided symmetrically with respect to the rotation axis. In a direction perpendicular to the detecting direction and a direction in which the rotation axis extends, a length from the rotation axis to an end of the first region and a length from the rotation axis to an end of the second region are different.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: May 15, 2018
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Yuhua Zhang, Heewon Jeong, Kiyoko Yamanaka, Masahide Hayashi
  • Patent number: 9964560
    Abstract: To provide a high-reliable transfer mold type sensor device in which a combined sensor including a plurality of sensors having a function of detecting physical amounts, a substrate processing a signal from the combined sensor and controlling a signal input/output with an external device, a chip pad mounted with the combined sensor and the substrate, and a lead frame are sealed with a mold resin and a package is formed, the combined sensor is configured to be thicker than the substrate and the chip pad, a principal surface side of the combined sensor is covered with the mold resin and a back surface side thereof contacts the substrate by a joint material, and the combined sensor is arranged on a package neutral surface in a cross-section of a thickness direction of the package including the combined sensor, the substrate, and the chip pad.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: May 8, 2018
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Akihiro Yaguchi, Masahide Hayashi, Kazunori Ohta, Akihiro Okamoto
  • Patent number: 9939267
    Abstract: The purpose of the present invention is to provide an inertial force detection device that can more accurately detect faults in a temperature sensor. Provided is an inertial force detection device configured so that in a state where an oscillating body is made to oscillate in a first direction, the amount of displacement when the oscillating body is displaced in a second direction due to the generation of angular velocity is detected as angular velocity, wherein the inertial force detection device has a means for performing control so that the oscillating body enters a state of resonance in the first direction, a temperature detection means for detecting temperature, and a means for detecting faults in the temperature detection means, and outputs a plurality of signals, which indicate the fault detection results of the three means, continuously from a single signal wire.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: April 10, 2018
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Toshiaki Nakamura, Heewon Jeong, Masahide Hayashi
  • Patent number: 9890037
    Abstract: For a small sensor produced through a MEMS process, when an electrode pad, wiring, or a shield layer is formed in a final step, it is difficult to nondestructively investigate whether a structure for sensing a physical quantity has been processed satisfactorily. In the present invention, in a physical quantity sensor formed from an MEMS structure, in a structure in which a surface electrode having through wiring is formed on the surface of an electrode substrate and the periphery thereof is insulated, forming a shield layer comprising a metallic material on the surface of the electrode substrate in a planar view and providing a space for internal observation inside the shield layer makes it possible to check for internal defects.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: February 13, 2018
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Masatoshi Kanamaru, Masahide Hayashi, Masashi Yura, Heewon Jeong
  • Publication number: 20180002164
    Abstract: The purpose of the present invention is to improve the pressure resistance of a cavity in a semiconductor sensor device employing a resin package, and to do so without adversely affecting the embeddability of an electrically conductive member. The semiconductor sensor device has a gap 1a sealed in an airtight manner inside a laminate structure of a plurality of laminated substrates 1, 4, and 5, and has a structure in which the outside of the laminate structure is covered by a resin, wherein a platy component 2 having at least one side that is greater in length than the length of one side of the gap 1a along this side is arranged to the outside of an upper wall 1b of the gap 1, the upper wall 1b of the gap being mechanically suspended by the platy component 2.
    Type: Application
    Filed: January 8, 2016
    Publication date: January 4, 2018
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Munenori DEGAWA, Hiroshi KIKUCHI, Akihiro OKAMOTO, Masashi YURA, Masahide HAYASHI
  • Patent number: 9810734
    Abstract: A compound sensor capable of suppressing a fault which has occurred in a detection element from affecting other detection units in which no fault has occurred is provided. The compound sensor includes: a plurality of detection units including C/V conversion circuits 321a and 321b, amplifier circuits 322a and 322b, ADCs 323a and 323b, diagnosis voltage outputting DACs 327a and 327b, carrier signal generating DACs 328a and 328b and substrate voltage generating DACs 329a and 329b which are signal detection circuits provided for each of a plurality of detection elements; a power source voltage input unit 331 and a GND voltage input unit 332 shared among each of the plurality of detection units; and overcurrent switch circuits 101a and 101b which are fault detection circuits for detecting a fault of each detection element and stopping power supply to the detection unit in which the fault has occurred.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: November 7, 2017
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Daisuke Maeda, Ichiroh Ohsaka, Masahide Hayashi
  • Patent number: 9804188
    Abstract: An inertial sensor not susceptible to temperature change and vibration disturbance in an implementation environment of the inertial sensor is provided. In the present invention, for example, as illustrated in FIG. 9, an extending portion EXU is provided so as to connect to a fixing portion FU3, this extending portion EXU and a third region P3 which configures part of a mass body MS are connected via a support beam BM3 and a support beam BM4, and the support beam BM3 and the support beam BM4 are disposed oppositely with respect to a virtual line IL1. With this, natural frequency of an unwanted mode due to rotation and torsion of the mass body MS can be shifted to a high frequency band.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: October 31, 2017
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Heewon Jeong, Kiyoko Yamanaka, Masahide Hayashi
  • Publication number: 20170233246
    Abstract: For a small sensor produced through a MEMS process, when an electrode pad, wiring, or a shield layer is formed in a final step, it is difficult to nondestructively investigate whether a structure for sensing a physical quantity has been processed satisfactorily. In the present invention, in a physical quantity sensor formed from an MEMS structure, in a structure in which a surface electrode having through wiring is formed on the surface of an electrode substrate and the periphery thereof is insulated, forming a shield layer comprising a metallic material on the surface of the electrode substrate in a planar view and providing a space for internal observation inside the shield layer makes it possible to check for internal defects.
    Type: Application
    Filed: June 29, 2015
    Publication date: August 17, 2017
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Masatoshi KANAMARU, Masahide HAYASHI, Masashi YURA, Heewon JEONG
  • Publication number: 20170219620
    Abstract: Provided is a highly reliable acceleration sensor having little 0-point drift. For example, an acceleration sensor having a support substrate having a first direction and a second direction orthogonal thereto in a single surface, a device layer disposed on the support substrate with a space interposed therebetween and having a weight that deforms according to the application of acceleration, and a cap layer disposed on the device layer with a space interposed therebetween, wherein a fixed part fixed to the support substrate is provided in the center of the weight, a beam is provided that extends from the fixed part and makes the weight mobile by being connected thereto, a plurality of posts for coupling the support substrate and the cap layer are disposed on the fixed part, and electric signals are applied to and received from the weight via the posts.
    Type: Application
    Filed: April 8, 2015
    Publication date: August 3, 2017
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Heewon JEONG, Masahide HAYASHI, Kiyoko YAMANAKA, Daisuke MAEDA
  • Publication number: 20170191830
    Abstract: An inertial sensor having a simple configuration by vacuum sealing a resonator which detects acceleration and exploits a resonance vibration using a high Q value MEMS device. The sensor includes: a detecting proof mass and beam which detects acceleration; a driving electrode which excites the detecting proof mass and beam; a resonant frequency tuning electrode which changes the resonant frequency of the detecting proof mass and beam; and a detecting circuit which applies voltage to the resonant frequency tuning electrode for changing the resonant frequency to cancel a change of the resonant frequency of the detecting proof mass and beam when the acceleration is applied to the detecting proof mass and beam during the vibration of the detecting proof mass and beam by the voltage applied to the detecting proof mass and beam, and outputs the acceleration based on a value of the voltage applied to resonant frequency tuning electrode.
    Type: Application
    Filed: April 8, 2015
    Publication date: July 6, 2017
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Daisuke MAEDA, Heewon JEONG, Masahide HAYASHI