Patents by Inventor Shozo Kanzaki

Shozo Kanzaki 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: 11088649
    Abstract: Provided is a power conversion unit, in which a power smoothing capacitor is configured such that a plurality of unit capacitors as conductive polymer hybrid aluminum electrolytic capacitors are arrayed in a grid pattern and connected in parallel on a circuit board, and also connected to a plurality of unit modules of different phases via positive and negative bus bars arranged on both sides of the circuit board so that each group of several unit capacitors and each unit module are arranged close to each other, to thereby reduce wiring impedance of a power supply circuit and suppress noise generation.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: August 10, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yasuhiko Kitamura, Ryuichi Ishii, Shozo Kanzaki, Toshiyuki Yasutomi
  • Publication number: 20200324664
    Abstract: A standby current of an arithmetic control unit configured to execute a control operation based on an activation signal generated by an uncertain manual operation is suppressed. A power supply relay configured to supply power to an arithmetic control unit is driven so as to be closed by a power supply switch, to thereby apply drive control to a main electric apparatus, and apply drive control to an auxiliary electric apparatus in accordance with a composite activation signal generated by an activation signal processing unit responding to closing operations of activation command elements even when the power supply switch is opened. As a result, a standby current generated in the activation signal processing unit is greatly suppressed compared with a case in which the arithmetic control unit is intermittently activated.
    Type: Application
    Filed: February 24, 2020
    Publication date: October 15, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Shozo Kanzaki, Yoshikazu Ishida
  • Publication number: 20200195189
    Abstract: Provided is a power conversion unit, in which a power smoothing capacitor is configured such that a plurality of unit capacitors as conductive polymer hybrid aluminum electrolytic capacitors are arrayed in a grid pattern and connected in parallel on a circuit board, and also connected to a plurality of unit modules of different phases via positive and negative bus bars arranged on both sides of the circuit board so that each group of several unit capacitors and each unit module are arranged close to each other, to thereby reduce wiring impedance of a power supply circuit and suppress noise generation.
    Type: Application
    Filed: April 27, 2017
    Publication date: June 18, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yasuhiko KITAMURA, Ryuichi ISHII, Shozo KANZAKI, Toshiyuki YASUTOMI
  • Publication number: 20190210481
    Abstract: An electric charging control device is obtained which detects welding abnormality of an electric contactor(s) along charging passages from an electric charging plug reaching a main battery; electric charging contactors and main electric contactors are connected in series; a first voltage monitoring circuit connected between power-supply points P1 and N1, a second voltage monitoring circuit connected therebetween, and a voltage-level detection circuit connected between the midpoints P2 and N2 are provided for producing a first voltage detection signal DET1, a second voltage detection signal DET2, and a main voltage detection signal DET0, each of which is a respective determination logic signal responding to the presence or absence of a monitored voltage; and a test voltage is received from either one of the main battery and a ground-based electric charging power-source apparatus, so that the presence or absence of welding abnormality in any one of the contactors is determined.
    Type: Application
    Filed: December 26, 2018
    Publication date: July 11, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yoshikazu ISHIDA, Shozo KANZAKI
  • Patent number: 10305389
    Abstract: To downsize a power smoothing capacitor substrate unit for opening/closing modules configured to convert a low-voltage DC power to AC power to drive a three-phase AC motor. A plurality of unit capacitors (101) being a conductive polymer aluminum electrolytic capacitor are connected between a positive-side first conductive plate (10P0) connected to a positive-side power supply terminal (125P) and a negative-side second conductive plate (10N) connected to a negative-side power supply terminal (124N), and three or more capacitor rows are arranged for each of three pairs of divided power supply terminal blocks (130B) connected to the opening/closing modules (90B) and one or more capacitor rows are arranged between the terminal blocks. Accordingly, ripple currents in a large number of capacitors connected in parallel to each other are equalized to prevent a temperature increase in each capacitor.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: May 28, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yasuhiko Kitamura, Hiroaki Takahashi, Shozo Kanzaki, Toshiyuki Yasutomi
  • Publication number: 20180367055
    Abstract: To downsize a power smoothing capacitor substrate unit for opening/closing modules configured to convert a low-voltage DC power to AC power to drive a three-phase AC motor. A plurality of unit capacitors (101) being a conductive polymer aluminum electrolytic capacitor are connected between a positive-side first conductive plate (10P0) connected to a positive-side power supply terminal (125P) and a negative-side second conductive plate (10N) connected to a negative-side power supply terminal (124N), and three or more capacitor rows are arranged for each of three pairs of divided power supply terminal blocks (130B) connected to the opening/closing modules (90B) and one or more capacitor rows are arranged between the terminal blocks. Accordingly, ripple currents in a large number of capacitors connected in parallel to each other are equalized to prevent a temperature increase in each capacitor.
    Type: Application
    Filed: April 26, 2018
    Publication date: December 20, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yasuhiko KITAMURA, Hiroaki TAKAHASHI, Shozo KANZAKI, Toshiyuki YASUTOMI
  • Patent number: 9972928
    Abstract: A plurality of pairs of contact terminals accommodated in a card edge connector include back surface members having one ends to which lead wires are connected and another ends being folded to form movable members. Until a circuit board of a control unit is inserted, end portions of the movable members are held in conductive contact with each other. When the circuit board is inserted, the movable members are separated and brought into contact with copper foil terminals. When the circuit board is removed, the movable members plastically deform and are opposed to each other with an initial gap smaller than a thickness dimension of the circuit board. With this arrangement, wiring inspection may be performed with opposed movable members shorted to one another, but for subsequent circuit board insertion at the second or subsequent insertion and removal of the circuit board, the movable members will be slightly separated by a gap to suppress slide abrasion during insertion.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: May 15, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shozo Kanzaki, Fumiaki Arimai, Hiroyoshi Nishizaki, Masato Nakanishi, Shingo Iguchi
  • Patent number: 9926880
    Abstract: An in-vehicle engine control apparatus allowing split injection frequency or split injection of fuel while preventing a driving switch element for fuel injecting electromagnetic coils and a boosting switch element for generating a boosted high voltage from being overheated. An operation control circuit portion has reference data of measured environmental temperature vs allowable engine rotational speed with a selected value of the split injection frequency being a parameter, and determines the selected value having, as an upper limit, a split injection frequency which makes the internal temperature of the boosting switch element or a rapidly exciting switch element a predetermined allowable limit value in association with the present environmental temperature detected by an average environmental temperature detection element in a case and the present engine rotational speed detected by an engine rotation sensor.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: March 27, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Mitsunori Nishida, Osamu Nishizawa, Shozo Kanzaki
  • Patent number: 9735496
    Abstract: A circuit board with circuit components mounted thereon is integrally molded with a sealing resin having a sealed end face part that is a thermosetting resin. A cylindrical intermediate adapter is bonded and fixed to the sealed end face part with an opening into which a receptacle body of a connector housing is inserted. A resilient contact connected to a lead wire is caused to be in electrical contact with a copper foil trace terminal of the circuit board. The connector housing and the intermediate adapter are made of a thermoplastic resin resistant to crack failure, which improves handling capability for inserting and withdrawing a connector.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: August 15, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Fumiaki Arimai, Shozo Kanzaki, Hiroyoshi Nishizaki
  • Patent number: 9699890
    Abstract: Second display means front parts, each including an immersion liquid surface level display for a coating liquid for moisture prevention and a lead-free display mark, are formed respectively in upper portions on a left side and a right side that are opposite sides having the one side interposed therebetween. A first display means front part including a board management document number, which defines a material for solder, is formed in a lower portion of the printed circuit board. A lead-free display mark (PBF) is not buried in or mixed with a large number of circuit information displays in the board, and a detailed management number is described in a reduced size to conserve space. Thus, the important lead-free display mark can be displayed with large character marks that also serve to manage a liquid surface.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: July 4, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Koji Hashimoto, Keiichi Arita, Shozo Kanzaki
  • Publication number: 20170089292
    Abstract: An in-vehicle engine control apparatus allowing split injection frequency or split injection of fuel while preventing a driving switch element for fuel injecting electromagnetic coils and a boosting switch element for generating a boosted high voltage from being overheated. An operation control circuit portion has reference data of measured environmental temperature vs allowable engine rotational speed with a selected value of the split injection frequency being a parameter, and determines the selected value having, as an upper limit, a split injection frequency which makes the internal temperature of the boosting switch element or a rapidly exciting switch element a predetermined allowable limit value in association with the present environmental temperature detected by an average environmental temperature detection element in a case and the present engine rotational speed detected by an engine rotation sensor.
    Type: Application
    Filed: February 16, 2016
    Publication date: March 30, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Mitsunori NISHIDA, Osamu NISHIZAWA, Shozo KANZAKI
  • Patent number: 9608350
    Abstract: An electronic equipment unit includes a multi-layer circuit board. A part arrangement region on which circuit parts are mounted and a terminal region are provided on the multi-layer circuit board. The part arrangement region is encapsulated with resin. An outline region is formed from a solder resist film surrounding the part arrangement region to prevent the resin from flowing into the terminal region. A non-solder resist region is provided so as to surround the outline region and formation of the solder resist film is inhibited in the non-solder resist region. A clamp abutting surface which is pressed by a mold and surrounds the terminal region and thereby prevents the resin from flowing into the terminal region is a partial region of the multi-layer circuit board where a surface layer circuit pattern is absent.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: March 28, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shozo Kanzaki, Fumiaki Arimai, Hiroyoshi Nishizaki, Masato Nakanishi
  • Patent number: 9573540
    Abstract: On-vehicle electrical loads (121,122) are connected to an on-vehicle battery (101) via a series circuit including a load switching element (221,222) and a reverse current interrupting element (200a) for a load circuit, and a feeding switching element (120A) that is closed in response to closure of a power supply switch (110). The element (FET) (200a) is closed when the switch (110) is closed and a power supply voltage is applied to a load power supply terminal (Vba) connected to the element (120A), to thereby be energized in an energization direction of an internal parasitic diode thereof. The element (200a) is de-energized when the switch (110) is opened. Thus, malfunction is prevented, which occurs when the element (120A) is opened, a short-to-power flows backward via the element (200a) into the terminal (Vba) so as to feed power to another device connected to the element (200a).
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: February 21, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shozo Kanzaki, Koji Hashimoto, Kazunari Masudome, Yoshitake Nishiuma, Yusuke Matsuda, Tomohiro Kimura, Shinji Higashibata
  • Patent number: 9545020
    Abstract: A control unit is stored in an airtight housing constituted by a base, an annular peripheral wall member, a cover, and first and second interior packings, second wiring conductors connected to input/output equipment and first wiring conductors connected to a host controller through a control signal connector are brought into press-contact with input/output control terminals of the control unit by first and second pressing elastic mats, the relative positions of associated components are regulated by positioning pins passing through from the cover to the base, and the cover is opened by loosening blockade screws without causing an assembly dimension error or sliding wear of conductive contact portions due to thermal deformation, whereby the control unit is detached.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: January 10, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shozo Kanzaki, Fumiaki Arimai, Hiroyoshi Nishizaki, Masato Nakanishi
  • Publication number: 20160261059
    Abstract: An electronic equipment unit includes a multi-layer circuit board. A part arrangement region on which circuit parts are mounted and a terminal region are provided on the multi-layer circuit board. The part arrangement region is encapsulated with resin. An outline region is formed from a solder resist film surrounding the part arrangement region to prevent the resin from flowing into the terminal region. A non-solder resist region is provided so as to surround the outline region and formation of the solder resist film is inhibited in the non-solder resist region. A clamp abutting surface which is pressed by a mold and surrounds the terminal region and thereby prevents the resin from flowing into the terminal region is a partial region of the multi-layer circuit board where a surface layer circuit pattern is absent.
    Type: Application
    Filed: July 21, 2015
    Publication date: September 8, 2016
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shozo KANZAKI, Fumiaki ARIMAI, Hiroyoshi NISHIZAKI, Masato NAKANISHI
  • Patent number: 9413238
    Abstract: In a feed control apparatus that controls a feed state for an inductive load by controlling the opening and closing of a load opening and closing element connected in series to the inductive load, a free-wheeling circuit element employing a field effect transistor is connected in parallel to the inductive load so that a capacitor is charged by opening the free-wheeling circuit element when the load opening and closing element is closed and the free-wheeling circuit element is closed by charges charged to the capacitor when the load opening and closing element is opened. A connection is made in polarity in which a closed-circuit conduction direction in the free-wheeling circuit element is the same as a conduction direction in an internal parasitic diode of the free-wheeling circuit element, and the free-wheeling circuit element conducts backward by a small-capacity capacitor. Consequently, a voltage drop and a temperature rise are reduced.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: August 9, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shozo Kanzaki, Koji Hashimoto
  • Patent number: 9407035
    Abstract: In an electronic device unit, each of the contact terminals includes a first member coupled to a press-fitting and fixing portion through intermediation of an elastically deformable portion, and a second member being coupled to the first member through intermediation of a folding portion and including a pressure bending portion formed at a terminal end of the second member. An end surface covering resin formed on the circuit board presses a pressure bending portion so that a conductive contact portion formed at the folding portion of the first member is pressed against the board-side terminal substantially in a right-angle direction. Thus, sliding contact between the conductive contact portion and the board-side terminal is diminished.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: August 2, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Fumiaki Arimai, Shozo Kanzaki, Hiroyoshi Nishizaki
  • Publication number: 20160205771
    Abstract: Second display means front parts, each including an immersion liquid surface level display for a coating liquid for moisture prevention and a lead-free display mark, are formed respectively in upper portions on a left side and a right side that are opposite sides having the one side interposed therebetween. A first display means front part including a board management document number, which defines a material for solder, is formed in a lower portion of the printed circuit board. A lead-free display mark (PBF) is not buried in or mixed with a large number of circuit information displays in the board, and a detailed management number is described in a reduced size to conserve space. Thus, the important lead-free display mark can be displayed with large character marks that also serve to manage a liquid surface.
    Type: Application
    Filed: August 11, 2015
    Publication date: July 14, 2016
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Koji HASHIMOTO, Keiichi ARITA, Shozo KANZAKI
  • Patent number: 9385529
    Abstract: Power supply current is supplied to a plurality of electric loads, the power supply current being generated by a DC power supply, flowing in and branching from a shared power supply switching device and then flowing in reverse connection protection devices that are a field-effect transistor and connected in series to the electric loads, respectively. The reverse connection protection devices are connected in a polarity such that the power supply current flows in the forward direction of parasitic diodes generated between the source terminal S and the drain terminal D of the field-effect transistor. When the current in the field-effect transistor is less than a predetermined value, a gate control circuit interrupts the gate voltage of the reverse connection protection device to cause the reverse connection protection device to open.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: July 5, 2016
    Assignee: Mitsubishi Electric Coporation
    Inventors: Shozo Kanzaki, Koji Hashimoto, Tomohiro Kimura
  • Patent number: 9350156
    Abstract: Disclosed is a power supply control apparatus of an electric load that includes an upstream side switching element and a downstream side switching element and detects various abnormality states of a load wiring by a small number of detection signals. The power supply control apparatus includes a control circuit unit that gives a power supply command signal to the upstream switching element connected in series with the electric load and gives a conduction command signal to the downstream switching element, open-circuits the upstream and downstream switching elements by a synthetic overcurrent determination storage circuit that is operated in response to an overcurrent detecting circuit, monitors a value of one variable divided voltage generated by the voltage monitoring circuit for the electric load, and identifies and stores a wiring abnormality such as a negative line supply fault, a positive line ground fault, and a load short circuit abnormality.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: May 24, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shozo Kanzaki, Koji Hashimoto, Kazunari Masudome, Tomohiro Kimura