Patents by Inventor Daisuke HOKUTO

Daisuke HOKUTO 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: 20260299634
    Abstract: A pedal device includes: a pedal configured to rotate about a rotational axis; and a reaction force generator configured to generate a reaction force corresponding to an urging force generated by pressing operation of the pedal. The pedal includes an urging portion configured to transmit the urging force to the reaction force generator when the urging portion is rotated integrally with the pedal. The reaction force generator includes a linearly moving portion configured to move linearly in an extending direction of a central axis of the reaction force generator when the pressing operation is performed. The urging portion has an urging surface configured to urge a contact surface of the linearly moving portion. The urging portion is placed at a position where a virtual urging center passes through a virtual axis perpendicular line when the pedal is rotated within a predetermined rotational range.
    Type: Application
    Filed: June 10, 2026
    Publication date: October 1, 2026
    Inventors: Daisuke HOKUTO, Etsugo YANAGIDA, Yuki MATSUNAGA, Masashi ARAO, Ryo SANO, Kengo ITO
  • Patent number: 12746897
    Abstract: In a pedal device, a first elastic member is deformed in accordance with a sliding operation of a first guide of a first holder in a vehicle longitudinal direction with a second guide of a second holder by a force from a pedal when the pedal rotates. Further, due to the force from the pedal when the pedal rotates, a second elastic member is deformed in accordance with a sliding operation of the second guide in the vehicle longitudinal direction with a third guide of a guide member. Further, the first guide and the second guide are made to restrict movement in a vehicle vertical direction. In addition, the second holder and the third guide are made to mutually restrict movement in the vehicle vertical direction.
    Type: Grant
    Filed: October 8, 2024
    Date of Patent: September 29, 2026
    Assignee: DENSO CORPORATION
    Inventors: Makoto Shigematsu, Daisuke Hokuto
  • Patent number: 12728822
    Abstract: A brake system includes a brake device, a brake circuit that generates a braking force for braking a vehicle, ECU that controls the braking force generated by the brake circuit according to a stroke amount of the brake pedal, and a user interface. When the first mode is selected, the ECU executes normal control for controlling the braking force generated by the brake circuit based on a basic characteristics which is a basic relationship between the stroke amount of the brake pedal and the braking force. When the second mode is selected, the ECU executes an automatic braking force control when the stroke amount is between a first threshold value and the second threshold value after the stroke amount of the brake pedal increases and reaches a predetermined set value. The ECU executes normal control when the stroke amount of the brake pedal becomes larger than the second threshold value.
    Type: Grant
    Filed: August 17, 2023
    Date of Patent: September 8, 2026
    Assignee: DENSO CORPORATION
    Inventors: Shinji Komatsu, Etsugo Yanagida, Daisuke Hokuto
  • Patent number: 12693699
    Abstract: A brake device for a brake-by-wire system includes a brake pedal, a sensor, a reaction force generator, and a reaction force changing mechanism. The brake pedal is rotatably mounted on a housing and not mechanically connected to a hydraulic pressure generator. The sensor outputs a signal corresponding to a stroke amount of the brake pedal to an electronic control unit. The reaction force generator has one end connected to the brake pedal and the other end connected to the housing so as to generate a reaction force against a depression force applied to the brake pedal by a driver. The reaction force changing mechanism generates a reaction force against a depression force applied to the brake pedal by the driver, and is able to change a magnitude of the reaction force in advance according to the driver.
    Type: Grant
    Filed: February 23, 2023
    Date of Patent: July 28, 2026
    Assignee: DENSO CORPORATION
    Inventors: Daisuke Hokuto, Etsugo Yanagida, Takuto Kita, Yuusuke Yoshida, Soichi Kinouchi, Tetsuo Hariu
  • Patent number: 12656808
    Abstract: A pedal device includes: a pedal configured to rotate about a rotational axis; and a reaction force generator configured to generate a reaction force corresponding to an urging force generated by pressing operation of the pedal. The pedal includes an urging portion configured to transmit the urging force to the reaction force generator when the urging portion is rotated integrally with the pedal. The reaction force generator includes a linearly moving portion configured to move linearly in an extending direction of a central axis of the reaction force generator when the pressing operation is performed. The urging portion has an urging surface configured to urge a contact surface of the linearly moving portion. The urging portion is placed at a position where a virtual urging center passes through a virtual axis perpendicular line when the pedal is rotated within a predetermined rotational range.
    Type: Grant
    Filed: October 8, 2024
    Date of Patent: June 16, 2026
    Assignee: DENSO CORPORATION
    Inventors: Daisuke Hokuto, Etsugo Yanagida, Yuki Matsunaga, Masashi Arao, Ryo Sano, Kengo Ito
  • Publication number: 20260138570
    Abstract: In a brake pedal device, a brake pedal is connected to a casing with a posture changeable by a brake operation of a driver, and includes an operation unit that is pressed by a driver. A reaction force generating unit is provided inside the casing, and the reaction force generating unit is configured to generate a reaction force with respect to the brake pedal in accordance with an amount of change in the posture of the brake pedal during the brake operation, and to cause the brake pedal to return to a reference position when the brake operation is released. A sensor unit is provided outside the casing, to detect an amount of change in the posture of the brake pedal, and a sensor protector is provided at the casing in a position away from the brake pedal, to cover at least a part of the sensor unit.
    Type: Application
    Filed: January 16, 2026
    Publication date: May 21, 2026
    Inventors: Kengo ITO, Etsugo YANAGIDA, Daisuke HOKUTO, Masashi ARAO, Yasuhisa FUKUDA
  • Publication number: 20260125033
    Abstract: A pedal device includes a pedal and a reaction force generation mechanism. The reaction force generation mechanism includes a resilient device and a first holder. The first holder contacts the resilient device from one side, which is a side where the pedal is placed. The first holder has a primary disengagement stopper. The reaction force generation mechanism includes a second holder that contacts the resilient device from another side, which is opposite to the one side. The second holder has a secondary disengagement stopper. In a non-depressed state of the pedal, the pedal limits movement of the first holder toward the one side. When the pedal no longer limits and thus releases the movement of the first holder, the secondary disengagement stopper limits the movement of the first holder relative to the second holder beyond a predetermined limit toward the one side.
    Type: Application
    Filed: January 2, 2026
    Publication date: May 7, 2026
    Inventors: Yasuhisa FUKUDA, Masashi ARAO, Daisuke HOKUTO
  • Publication number: 20260084664
    Abstract: An organ-type pedal device includes a housing, a shaft, a pedal pad, and a sensor unit. The housing is attached to a vehicle body. The shaft is rotatably supported around a center of a shaft receiving portion provided in the housing as a rotation axis. The pedal pad is fixed to the shaft and rotates about a same rotation axis as the shaft. The pedal pad has a structure in which a portion to be stepped on by a driver is arranged above the rotation axis in a vertical direction when being mounted on the vehicle. The sensor unit has a rotating portion provided at the shaft and a signal output portion provided at the housing for outputting a signal corresponding to a phase of the rotating portion, and detects a rotation angle of the pedal pad and the shaft.
    Type: Application
    Filed: December 2, 2025
    Publication date: March 26, 2026
    Inventors: Daisuke HOKUTO, Etsugo YANAGIDA, Yasuhisa FUKUDA
  • Publication number: 20260070523
    Abstract: A brake pedal device includes a pedal pad rotatable about an axis when stepped on by a driver, and a reaction force generation mechanism generating a reaction force to the pedal pad according to a stepping amount of the pedal pad. The pedal pad includes a pedal base portion extending away from an axis side end to another end, and a pedal operation portion attached to the pedal base portion and stepped on by the driver. The pedal operation portion protrudes toward a pedal return side in a rotation direction about the axis with respect to the pedal base portion, and a surface of the pedal operation portion has a plane portion that is configured as a flat surface and is stepped on by the driver, so that the reaction force generated by the reaction force generation mechanism acts on the pedal pad in a direction piercing the plane portion.
    Type: Application
    Filed: November 13, 2025
    Publication date: March 12, 2026
    Inventors: Kengo ITO, Etsugo YANAGIDA, Masashi ARAO, Daisuke HOKUTO, Yasuhisa FUKUDA
  • Patent number: 12552349
    Abstract: In a brake pedal device, a brake pedal is connected to a casing with a posture changeable by a brake operation of a driver, and includes an operation unit that is pressed by a driver. A reaction force generating unit is provided inside the casing, and the reaction force generating unit is configured to generate a reaction force with respect to the brake pedal in accordance with an amount of change in the posture of the brake pedal during the brake operation, and to cause the brake pedal to return to a reference position when the brake operation is released. A sensor unit is provided outside the casing, to detect an amount of change in the posture of the brake pedal, and a sensor protector is provided at the casing in a position away from the brake pedal, to cover at least a part of the sensor unit.
    Type: Grant
    Filed: July 22, 2024
    Date of Patent: February 17, 2026
    Assignee: DENSO CORPORATION
    Inventors: Kengo Ito, Etsugo Yanagida, Daisuke Hokuto, Masashi Arao, Yasuhisa Fukuda
  • Patent number: 12552355
    Abstract: A brake device for a vehicle includes: a brake pedal having a pedal part and a lever part that rotates about a rotation shaft when the pedal part is operated; a housing that rotatably supports the lever part; a reaction force generator connected to the housing and the lever part to generate a reaction force against the lever part according to a stroke amount of the brake pedal; and a stopper configured to stop the lever part by being in contact with the lever part such that the lever part is restricted from rotating in a direction opposite to a rotation direction when the pedal part is operated.
    Type: Grant
    Filed: January 16, 2024
    Date of Patent: February 17, 2026
    Assignee: DENSO CORPORATION
    Inventors: Daisuke Hokuto, Etsugou Yanagida, Kunio Nanba
  • Patent number: 12539832
    Abstract: A pedal device includes a pedal and a reaction force generation mechanism. The reaction force generation mechanism includes a resilient device and a first holder. The first holder contacts the resilient device from one side, which is a side where the pedal is placed. The first holder has a primary disengagement stopper. The reaction force generation mechanism includes a second holder that contacts the resilient device from another side, which is opposite to the one side. The second holder has a secondary disengagement stopper. In a non-depressed state of the pedal, the pedal limits movement of the first holder toward the one side. When the pedal no longer limits and thus releases the movement of the first holder, the secondary disengagement stopper limits the movement of the first holder relative to the second holder beyond a predetermined limit toward the one side.
    Type: Grant
    Filed: November 21, 2024
    Date of Patent: February 3, 2026
    Assignee: DENSO CORPORATION
    Inventors: Yasuhisa Fukuda, Masashi Arao, Daisuke Hokuto
  • Patent number: 12509029
    Abstract: An organ-type pedal device includes a housing, a shaft, a pedal pad, and a sensor unit. The housing is attached to a vehicle body. The shaft is rotatably supported around a center of a shaft receiving portion provided in the housing as a rotation axis. The pedal pad is fixed to the shaft and rotates about a same rotation axis as the shaft. The pedal pad has a structure in which a portion to be stepped on by a driver is arranged above the rotation axis in a vertical direction when being mounted on the vehicle. The sensor unit has a rotating portion provided at the shaft and a signal output portion provided at the housing for outputting a signal corresponding to a phase of the rotating portion, and detects a rotation angle of the pedal pad and the shaft.
    Type: Grant
    Filed: August 23, 2023
    Date of Patent: December 30, 2025
    Assignee: DENSO CORPORATION
    Inventors: Daisuke Hokuto, Etsugo Yanagida, Yasuhisa Fukuda
  • Patent number: 12497004
    Abstract: A brake pedal device includes a pedal pad rotatable about an axis when stepped on by a driver, and a reaction force generation mechanism generating a reaction force to the pedal pad according to a stepping amount of the pedal pad. The pedal pad includes a pedal base portion extending away from an axis side end to another end, and a pedal operation portion attached to the pedal base portion and stepped on by the driver. The pedal operation portion protrudes toward a pedal return side in a rotation direction about the axis with respect to the pedal base portion, and a surface of the pedal operation portion has a plane portion that is configured as a flat surface and is stepped on by the driver, so that the reaction force generated by the reaction force generation mechanism acts on the pedal pad in a direction piercing the plane portion.
    Type: Grant
    Filed: November 2, 2023
    Date of Patent: December 16, 2025
    Assignee: DENSO CORPORATION
    Inventors: Kengo Ito, Etsugo Yanagida, Masashi Arao, Daisuke Hokuto, Yasuhisa Fukuda
  • Patent number: 12459467
    Abstract: At a pedal device, a force applied from a pedal at a time of rotating the pedal moves a first guide portion of a first holder to slide relative to a second guide portion of a second holder in a vehicle front-rear direction, resulting in deformation of a first resilient member. Furthermore, the force applied from the pedal at the time of rotating the pedal moves the second guide portion to slide relative to a third guide portion of a guide member in the vehicle front-rear direction, resulting in deformation of a second resilient member.
    Type: Grant
    Filed: October 10, 2024
    Date of Patent: November 4, 2025
    Assignee: DENSO CORPORATION
    Inventors: Daisuke Hokuto, Etsugo Yanagida, Yuki Matsunaga, Masashi Arao, Atsushi Nishimura
  • Patent number: 12403876
    Abstract: A vehicle brake system includes a vehicle brake device and a hydraulic pressure generation unit. The vehicle brake device includes: a brake pedal that has a pedal portion, and a lever portion rotating about a rotation axis in response to the pedal portion being operated; a stroke sensor that outputs a signal based on a stroke amount of the brake pedal; a housing that rotatably supports the lever portion; and a reaction force generation portion that generates a reaction force applied on the lever portion based on the stroke amount. The hydraulic pressure generation unit generates a hydraulic pressure for braking a vehicle.
    Type: Grant
    Filed: June 8, 2022
    Date of Patent: September 2, 2025
    Assignee: DENSO CORPORATION
    Inventors: Etsugou Yanagida, Daisuke Hokuto, Kunio Nanba
  • Patent number: 12397755
    Abstract: A pedal pad in an organ-type pedal device swings about a predetermined axis when stepped on by a driver's foot. A sensor unit outputs a signal corresponding to a swing angle of the pedal pad. A reaction force generation mechanism generates a reaction force against a driver's stepping force applied to the pedal pad. A first housing holds or covers at least one of a rotation shaft provided at the axis of the swinging of the pedal pad, the sensor unit, and the reaction force generation mechanism. A second housing is made of a rigid portion having a Young's modulus greater than that of the first housing or has the rigid portion at least in part. The second housing is configured to support a portion of the reaction force generation mechanism on one side opposite to the pedal pad by the rigid portion.
    Type: Grant
    Filed: November 3, 2023
    Date of Patent: August 26, 2025
    Assignee: DENSO CORPORATION
    Inventors: Daisuke Hokuto, Etsugo Yanagida, Masashi Arao, Kengo Ito, Yasuhisa Fukuda
  • Patent number: 12397753
    Abstract: A brake device includes: a brake pedal including a pedal and a lever that rotates about a rotation axis when the pedal is operated; a housing that rotatably supports the lever; a reaction force generator that generates a reaction force to the lever in accordance with a stroke amount of the brake pedal by receiving a force from the lever when the brake pedal is operated; a deformation member including a deformation portion that is deformed by a force received from the lever when the brake pedal is operated in a state where the reaction force generated by the reaction force generator is generated; and a stroke sensor that outputs a signal corresponding to the stroke amount and outputs a value indicating that operation of the brake pedal is abnormal and instructing execution of control for stopping a vehicle when the deformation portion is deformed.
    Type: Grant
    Filed: June 20, 2024
    Date of Patent: August 26, 2025
    Assignee: DENSO CORPORATION
    Inventors: Etsugou Yanagida, Kunio Nanba, Daisuke Hokuto
  • Patent number: 12384332
    Abstract: An arm includes an arm one end and an arm body extended from the arm one end. The arm is coupled with a pedal pad at the arm one end and is coupled with a reaction force generation mechanism on an counter-operation side. A stopper part is a component separate from the pedal pad and fixed to the pedal pad. One part, which is one of the pedal pad and the stopper part, includes a first arrangement section, and the other part, which is the other of the pedal pad and the stopper part, includes a second arrangement section. The first arrangement section and the second arrangement section interpose the arm one end therebetween and hold the arm one end against the pedal pad.
    Type: Grant
    Filed: August 17, 2023
    Date of Patent: August 12, 2025
    Assignee: DENSO CORPORATION
    Inventors: Yasuhisa Fukuda, Etsugo Yanagida, Daisuke Hokuto, Takao Yamamoto
  • Patent number: 12366879
    Abstract: A pedal device includes a shaft, a pedal, a housing, a reaction force generating mechanism, and a connecting rod. The connecting rod includes an arm portion and a push portion. The arm portion is connected to a back surface of the pedal. The push portion is connected to the arm portion. The push portion is configured to transmit force from the pedal to the reaction force generating mechanism by contacting the reaction force generating mechanism when the pedal is stepped on by an operator. Further, the connecting rod is connected to the back surface of the pedal, to rotate with the pedal about the axis of the shaft when the operator steps on the pedal, while an angle defined between the back surface of the pedal and an axis of the connecting rod is maintained.
    Type: Grant
    Filed: November 3, 2023
    Date of Patent: July 22, 2025
    Assignee: DENSO CORPORATION
    Inventors: Yasuhisa Fukuda, Etsugo Yanagida, Daisuke Hokuto, Masashi Arao