Patents Assigned to Keihin Corporation
  • Patent number: 11331975
    Abstract: An air conditioning case configuring a vehicular air conditioning device is configured from first through third case sections capable of being divided in a width direction, the third case section in a center in the width direction and the first case section being connected via a first dividing section, and the third case section and the second case section being connected via a second dividing section. Moreover, the first and second dividing sections are formed in such a manner that their lower section sides facing a lower passage divided in a space between an evaporator and a heating unit are positioned on outer sides in the width direction with respect to an upper section of the air conditioning case provided with a vent blast port blasting air into a vehicle interior.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: May 17, 2022
    Assignee: KEIHIN CORPORATION
    Inventors: Hiroto Suzuki, Kenji Tanaka, Yasunori Takahashi
  • Patent number: 11267311
    Abstract: Provided is a vehicular air conditioner including: an air-conditioning case that has an upper passage and a lower passage which are partitioned by an upper and lower partition plate therebetween; a heating unit that is disposed over the upper passage and the lower passage; an upper passage partition plate that is disposed downstream of the heating unit of the upper passage and forms a guide passage that guides a portion of air, which has passed the heating unit, toward an upper and lower connection opening that connects the upper passage and the lower passage; and a guide passage opening/closing unit that closes the guide passage in a state where the upper and lower connection opening is closed.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: March 8, 2022
    Assignee: KEIHIN CORPORATION
    Inventors: Hiroto Suzuki, Takehito Hashimoto
  • Patent number: 11207994
    Abstract: A mechano-electrical integrated power conversion device includes power drive unit and voltage converter that are housed within a single housing box and formed as a module. The box includes box body, upper lid member, and side lid member. The box body includes: a box body main portion disposed above a casing of an electric motor; and a box body remainder portion connected integrally to a side wall of the box body main portion and extending downwardly to a side of the casing. The upper lid member is mounted on the box body main portion, a first housing chamber being defined therebetween and housing the power drive unit. The side lid member is mounted on a side open end part of the box body remainder portion, a second housing chamber being defined between the box body remainder portion and the side lid member and housing the voltage converter.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: December 28, 2021
    Assignee: Keihin Corporation
    Inventor: Masashi Ueda
  • Patent number: 11204390
    Abstract: Provided is a battery monitoring circuit board on which a plurality of battery monitoring ICs that are electrically connected to a plurality of battery cells and monitor a state of each of the battery cells are mounted. The battery monitoring circuit board includes a first mounting region on which a current consumption element that is electrically connectable to the battery monitoring IC is mounted. The first mounting region is provided for each of the battery monitoring ICs.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: December 21, 2021
    Assignee: KEIHIN CORPORATION
    Inventors: Shingo Tsuchiya, Katsuhiro Takahashi
  • Patent number: 11187597
    Abstract: A temperature detection device includes: first and second temperature sensors that output temperature signals that are signals corresponding to measured temperatures; a signal conversion circuit that respectively converts the temperature signals, which are output from the first and second temperature sensors, into pulse signals having duty ratios or frequencies corresponding thereto; a multiplexer that selectively outputs one of a plurality of the pulse signals converted by the signal conversion circuit; and an offset unit that offsets the temperature signal, which is output from the first temperature sensor of the first and second temperature sensors, to the signal conversion circuit.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: November 30, 2021
    Assignee: KEIHIN CORPORATION
    Inventors: Kazunari Kurokawa, Tao Trong Bui, Kyo Kyo, Takuma Kodato
  • Patent number: 11171505
    Abstract: An electric power control device includes: an ECU; a DC power supply; a backup power supply which has a control power supply as an operation source, supplies electric power to the ECU when an electric power supply from a battery to the ECU is stopped, and supplies electric power to the DC power supply when an electric power supply from the battery to the DC power supply is stopped; a first ground line connected to a ground terminal of the DC power supply; a second ground line connected to a ground terminal of the backup power supply; a current path formation unit which electrically connects the first ground line to the second ground line and forms a path in which a current flows from the first ground line to the second ground line in one direction; and a noise minimizing component connected to the current path formation unit in series.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: November 9, 2021
    Assignees: KEIHIN CORPORATION, HONDA MOTOR CO., LTD.
    Inventors: Kazuya Sugano, Kazutaka Senoo, Koji Suzuki, Yasuhiko Kondo, Yasushi Hori
  • Patent number: 11146203
    Abstract: A motor control apparatus drives an inverter which supplies and receives electric power with respect to a motor by pulse width modulation. The motor control apparatus sets a frequency of a carrier such that a frequency of a sideband wave component of the carrier which is used for the pulse width modulation and a frequency of a predetermined rotation order of the motor become different from each other.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: October 12, 2021
    Assignees: HONDA MOTOR CO., LTD., KEIHIN CORPORATION
    Inventors: Kazuyuki Ohta, Shinichi Yataka, Daisuke Hoshino, Yusaku Suzuki, Yoshihiro Ito, Takashi Sugawara, Hirohito Ide
  • Patent number: 11117438
    Abstract: A door actuating device includes a plurality of doors disposed in a flow channel for adjusting a degree of opening of the flow channel defined in an air conditioner case, the doors having respective door drive shafts, and a link unit actuating at least two of the doors. The link unit includes an actuator, a plate-like base member having two surfaces, a link mechanism having a plurality of levers mounted on at least either one of the two surfaces of the base member, and a rack member movably disposed on the base member and movable by a drive force transmitted from the actuator.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: September 14, 2021
    Assignee: KEIHIN CORPORATION
    Inventor: Shingo Akiyama
  • Patent number: 11072523
    Abstract: A pressure reducing valve for gas is provided in which a connecting passage providing a connection between a passage and a pressure action chamber is formed within a valve body, a guide hole guiding movement of the valve body between a spring chamber and a high pressure chamber is formed within a body, a spring linked to a piston and urging the valve body in an opening direction is provided within the spring chamber, and a seal member providing a seal between the high pressure chamber and the spring chamber is disposed between the guide hole and the valve body. This provides a pressure reducing valve for gas that can suppress problems based on a decrease in the temperature of a pressure reducing valve.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: July 27, 2021
    Assignee: Keihin Corporation
    Inventors: Masayuki Suzuki, Shigeto Ryuen
  • Patent number: 11047328
    Abstract: An electromagnetic valve drive device includes: a state detection unit configured to detect an on-state or an off-state of a first switch and a second switch forming a boosting circuit; a boosting control unit configured to control a boosting operation, by performing a synchronous rectification control on switching of the first switch and the second switch, depending on the state of the first switch or the second switch detected by the state detection unit; and a drive circuit configured to drive an electromagnetic valve by supplying a voltage boosted by the boosting operation to the electromagnetic valve.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: June 29, 2021
    Assignee: KEIHIN CORPORATION
    Inventors: Atsushi Ogawa, Motoaki Kato, Kengo Nomura
  • Patent number: 11015546
    Abstract: An electromagnetic valve drive device includes: a state detection unit configured to detect an on-state or an off-state of a first switch and a second switch forming a boosting circuit; a boosting control unit configured to control a boosting operation, by performing a synchronous rectification control on switching of the first switch and the second switch, depending on the state of the first switch or the second switch detected by the state detection unit; and a drive circuit configured to drive an electromagnetic valve by supplying a voltage boosted by the boosting operation to the electromagnetic valve.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: May 25, 2021
    Assignee: KEIHIN CORPORATION
    Inventors: Atsushi Ogawa, Motoaki Kato, Kengo Nomura
  • Patent number: 10995680
    Abstract: A sealing member and an air intake controller are disclosed herein. The sealing member includes an inner cylindrical section having a gradually-decreasing-diameter portion which has a diameter that gradually decreases in one direction, an outer cylindrical section having a gradually-increasing-diameter portion which has a diameter that gradually increases in the one direction, and an annular connecting section which connects the inner cylindrical section and the outer cylindrical section at an end portion on the side in the opposite direction from the one direction. The outer cylindrical section has an extended cylindrical portion, the outer diameter of which gradually decreases in the one direction. An air intake controller can incorporate the sealing member that is disclosed herein between a shaft hole 1 and a valve shaft.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: May 4, 2021
    Assignee: Keihin Corporation
    Inventors: Satoshi Tanaka, Soichiro Nao, Kazusa Sato
  • Patent number: 10987995
    Abstract: A driving force transmission mechanism configuring a vehicular air conditioning device includes: a driving lever coupled to a driving source; a following lever engaged with this driving lever and following this driving lever; and a rack rod engaged with the following lever and moving linearly. A first shaft and a link gear of the following lever are engaged with this rack rod. Moreover, by the driving lever and the following lever revolving under driving action of the driving source, a second shaft engaged with the link gear rotates, and the first shaft rotates via the rack rod. As a result, a first and a second air-mix door engaged with the first and the second shaft slide to undergo an opening/closing operation, and their opening extent characteristics are configured nonlinear under engaging action of a link pin and a link groove of the following lever.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: April 27, 2021
    Assignee: KEIHIN CORPORATION
    Inventor: Shingo Akiyama
  • Patent number: 10967708
    Abstract: A door drive mechanism used for a vehicle air conditioning device includes a link mechanism connected to first and second shafts. The link mechanism includes a base member secured to an air conditioner case. The base member includes first and second shaft holes in which first and second shafts are inserted, guide grooves formed around the first and second shaft holes and configured to allow positioning portions to be inserted into the respective guide grooves, and guide portions including inclined surfaces configured to guide the positioning portions to the guide grooves. Moreover, the first and second shafts include the positioning portions protruding radially outward at positions closer to distal ends thereof than first gear portions.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: April 6, 2021
    Assignee: KEIHIN CORPORATION
    Inventor: Shingo Akiyama
  • Patent number: 10958141
    Abstract: Three substrate side terminal members are provided on a circuit substrate on which electronic components for controlling a brushless motor are disposed. Two of the substrate side terminal members protrude on a side in close proximity to bearing retaining members, and the remaining one substrate side terminal member protrudes on a side separated from the bearing retaining members. Ends of flexible wire members, the other ends of which are held in engagement with stator side terminal members, are held in engagement with the three substrate side terminal members.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: March 23, 2021
    Assignee: KEIHIN CORPORATION
    Inventor: Masaaki Ishizaki
  • Patent number: 10935576
    Abstract: In a voltage detection apparatus for detecting voltage of battery modules, it is possible to detect that a shut-off element performed operation in a certain one of a plurality of battery modules connected in parallel. The voltage detection apparatus detects voltage of the plurality of battery modules each including a shut-off element and connected in parallel with respect to a load, and decides whether the shut-off elements are operating based on the cell voltage in a state that the plurality of battery modules are disconnected from a power supply line by switching wares.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: March 2, 2021
    Assignee: KEIHIN CORPORATION
    Inventors: Shingo Tsuchiya, Seiji Kamata
  • Patent number: 10907597
    Abstract: This plunger pump includes a pressurization chamber that has a tubular inner circumferential wall and a plunger that has a substantially cylindrical outer circumferential surface. The inner circumferential wall has, in a part thereof in a circumferential direction about an axis of the plunger, a suction opening, which communicates with the pressurization chamber and is for introducing a fuel into the pressurization chamber. The inner circumferential wall is formed with an enlarged gap portion having a larger dimension than a dimension, at a position of the suction opening, from the outer circumferential surface of the plunger to an inner circumferential surface of the inner circumferential wall along a radial direction of the plunger, in at least a part of the inner circumferential wall at a position away from the position of the suction opening in the circumferential direction.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: February 2, 2021
    Assignee: KEIHIN CORPORATION
    Inventor: Yuya Ogane
  • Patent number: 10877078
    Abstract: A voltage determination device includes: a printed wiring board on which first to third substrate terminals are arranged in substantially one line; first and second voltage determination circuits mounted on the printed wiring board and disposed on a first side of the printed wiring board divided by a line passing through the first to third substrate terminals; a first printed wiring connecting the first substrate terminal and the first voltage determination circuit; a second printed wiring connecting the second substrate terminal and the first voltage determination circuit; a third printed wiring connecting the third substrate terminal and the second voltage determination circuit; and a fourth printed wiring connecting the second substrate terminal and the second voltage determination circuit, in which the first to fourth printed wirings are provided without intersecting each other and without bypassing a second side of the printed wiring board divided by the first arrangement line.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: December 29, 2020
    Assignee: KEIHIN CORPORATION
    Inventor: Yuzuru Takashima
  • Patent number: 10877102
    Abstract: A voltage detection device is provided which includes: a plurality of wires that are connected to a plurality of battery cells of a battery; a voltage detection circuit that operates with supply of electric power from the battery and detects voltages of the plurality of battery cells via the plurality of wires; an overvoltage protection circuit that electrically connects one or more wires of the plurality of wires to a minus terminal of the battery when the voltage of the one or more wires is higher than a predetermined threshold value; and a breaker circuit that irreversibly breaks electrical connection between the minus terminal and the voltage detection circuit using a current flowing from the one or more wires to the minus terminal.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: December 29, 2020
    Assignee: KEIHIN CORPORATION
    Inventors: Shingo Tsuchiya, Seiji Kamata, Atsushi Hirokawa, Seigo Imai
  • Patent number: 10865900
    Abstract: The present invention provides an inexpensive valve unit fixing structure that enables a valve unit to be easily fixed without the need for unitization in advance, and a fluid pump that enables a discharge valve and a relief valve to be incorporated in a compact manner. The valve unit fixing structure includes a main body (3), a discharge communication passage (9) provided inside the main body (3), a discharge valve unit (10) which is provided in the main body (3) and which opens/closes the discharge communication passage (9), and deformed fixing parts (35) which are formed by plastically deforming the main body (3) and which fix the discharge valve unit (10) to the main body (3).
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: December 15, 2020
    Assignee: Keihin Corporation
    Inventors: Yohei Kaneko, Yuya Ogane