Patents by Inventor Yoshiyuki Yasui

Yoshiyuki Yasui 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: 11485338
    Abstract: This electric braking device is provided with: an electric motor MTR that, in accordance with an operation amount Bpa of a braking operation member BP, generates a pressing force Fba, being a force pressing a friction member MSB against a rotary member KTB that rotates integrally with a wheel WHL of the vehicle; and a circuit board KBN to which a processor MPR and a bridge circuit BRG are mounted. The device is further provided with a rotation angle sensor MKA for detecting the rotation angle Mka of the electric motor, and drives the electric motor MTR on the basis of the rotation angle Mka. An end face Mmk of the rotation angle sensor MKA is fixed so as to be in contact with the circuit board KBN. The device is further provided with a pressing force sensor FBA for detecting the pressing force Fba, and drives the electric motor MTR on the basis of the pressing force Fba. An end face Mfb of the pressing force sensor FBA is fixed so as to be in contact with the circuit board KBN.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: November 1, 2022
    Assignee: ADVICS CO., LTD.
    Inventors: Yoshiyuki Yasui, Tomonori Katsuyama
  • Patent number: 11001242
    Abstract: A braking control device drives an electric motor based on a command pressing force corresponding to the required wheel braking force, and presses a friction member against a rotation member fixed to the wheel to generate a wheel braking force. The braking control device includes: a sensor for detecting wheel speed; a sensor for detecting the actual pressing force applied by the friction member; and a controller for calculating the target pressing force based on the command pressing force, and controlling the motor so that the target and actual pressing forces match. The controller calculates wheel slip state quantity based on the wheel speed, and executes, based on the slip state quantity, slip suppression control for reducing the degree of wheel slippage. Based on the actual pressing force at the start of the slip suppression control, the controller reduces the command pressing force and calculates the target pressing force.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: May 11, 2021
    Assignee: ADVICS CO., LTD.
    Inventor: Yoshiyuki Yasui
  • Patent number: 10899324
    Abstract: A braking control device generates a force for pressing a friction member against a rotating member fixed to a wheel of the vehicle via an electric motor controlled by a controller in accordance with an operation amount of an operation member. A pressing force sensor detects a pressing force actual value, and a rotation angle sensor detects a rotation angle actual value of the motor. The controller determines whether an operating state of the pressing force sensor is appropriate. When the operating state is appropriate, the motor output is adjusted based on the pressing force actual value, a correlation between the pressing force actual value and the rotation angle actual value is stored, and a conversion calculation map is created based on the correlation. When the operating state is not appropriate, the motor output is adjusted based on the rotation angle actual value and the conversion calculation map.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: January 26, 2021
    Assignee: ADVICS CO., LTD.
    Inventor: Yoshiyuki Yasui
  • Publication number: 20200353911
    Abstract: This electric braking device is provided with: an electric motor MTR that, in accordance with an operation amount Bpa of a braking operation member BP, generates a pressing force Fba, being a force pressing a friction member MSB against a rotary member KTB that rotates integrally with a wheel WHL of the vehicle; and a circuit board KBN to which a processor MPR and a bridge circuit BRG are mounted. The device is further provided with a rotation angle sensor MKA for detecting the rotation angle Mka of the electric motor, and drives the electric motor MTR on the basis of the rotation angle Mka. An end face Mmk of the rotation angle sensor MKA is fixed so as to be in contact with the circuit board KBN. The device is further provided with a pressing force sensor FBA for detecting the pressing force Fba, and drives the electric motor MTR on the basis of the pressing force Fba. An end face Mfb of the pressing force sensor FBA is fixed so as to be in contact with the circuit board KBN.
    Type: Application
    Filed: July 23, 2020
    Publication date: November 12, 2020
    Applicant: ADVICS CO., LTD.
    Inventors: Yoshiyuki YASUI, Tomonori KATSUYAMA
  • Patent number: 10759408
    Abstract: This electric braking device is provided with: an electric motor MTR that, in accordance with an operation amount Bpa of a braking operation member BP, generates a pressing force Fba, being a force pressing a friction member MSB against a rotary member KTB that rotates integrally with a wheel WHL of the vehicle; and a circuit board KBN to which a processor MPR and a bridge circuit BRG are mounted. The device is further provided with a rotation angle sensor MKA for detecting the rotation angle Mka of the electric motor, and drives the electric motor MTR on the basis of the rotation angle Mka. An end face Mmk of the rotation angle sensor MKA is fixed so as to be in contact with the circuit board KBN. The device is further provided with a pressing force sensor FBA for detecting the pressing force Fba, and drives the electric motor MTR on the basis of the pressing force Fba. An end face Mfb of the pressing force sensor FBA is fixed so as to be in contact with the circuit board KBN.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: September 1, 2020
    Assignee: ADVICS CO., LTD.
    Inventors: Yoshiyuki Yasui, Tomonori Katsuyama
  • Patent number: 10752229
    Abstract: An electric braking device includes: an electric motor for pressing a friction member against a rotary member that rotates integrally with a vehicle wheel; a lock mechanism for locking rotation of the electric motor and applying a parking brake in accordance with operation on a parking switch; and a control for driving the electric motor and the lock mechanism. The control increases the electricity amount sent to the electric motor when a pressing force is less than a preset lower value at the time the parking switch is switched from off to on, starts actuating the lock mechanism when the pressing force equals or exceeds the lower value, and, when the pressing force is greater than a preset upper value greater than or equal to the lower value, starts actuating the lock mechanism when the pressing force equals or exceeds the upper value.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: August 25, 2020
    Assignee: ADVICS CO., LTD.
    Inventor: Yoshiyuki Yasui
  • Patent number: 10696285
    Abstract: This electric braking device for a vehicle imparts to the wheels of the vehicle a braking torque in accordance with the output of an electric motor. A vehicle body-side electronic control unit calculates a command value for the output of the electric motor on the basis of the amount of operation performed on a braking operation member. A wheel-side electronic control unit adjusts the output of the electric motor on the basis of the command value. The vehicle body-side electronic control unit calculates the vehicle body speed on the basis of the wheel speed. The wheel-side electronic control unit adjusts the output of the electric motor so as to prevent an increase in slippage of the wheels on the basis of the vehicle body speed and the wheel speed.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: June 30, 2020
    Assignees: ADVICS CO., LTD, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshiyuki Yasui, Naoki Yabusaki
  • Publication number: 20200172064
    Abstract: A braking control device drives an electric motor based on a command pressing force corresponding to the required wheel braking force, and presses a friction member against a rotation member fixed to the wheel to generate a wheel braking force. The braking control device includes: a sensor for detecting wheel speed; a sensor for detecting the actual pressing force applied by the friction member; and a controller for calculating the target pressing force based on the command pressing force, and controlling the motor so that the target and actual pressing forces match. The controller calculates wheel slip state quantity based on the wheel speed, and executes, based on the slip state quantity, slip suppression control for reducing the degree of wheel slippage. Based on the actual pressing force at the start of the slip suppression control, the controller reduces the command pressing force and calculates the target pressing force.
    Type: Application
    Filed: April 18, 2017
    Publication date: June 4, 2020
    Applicant: ADVICS CO., LTD.
    Inventor: Yoshiyuki YASUI
  • Patent number: 10661772
    Abstract: This electric braking device is provided with: an electric motor MTR that, in accordance with an operation amount Bpa of a braking operation member BP caused by the driver of the vehicle, generates a pressing force Fba, being a force pressing a friction member MSB against a rotary member KTB that rotates integrally with a wheel WHL of the vehicle; a caliper CRP fixed to the electric motor MTR; a circuit board KBN to which a microprocessor MPR and a bridge circuit BRG are mounted, such that the electric motor MTR is driven; and a motor pin PMT that feeds power from the circuit board KBN to the electric motor MTR. The motor pin PMT penetrates a holding member HJB and is pressed into the circuit board KBN, which is fixed to the caliper CRP by the holding member HJB and the motor pin PMT.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: May 26, 2020
    Assignee: ADVICS CO., LTD.
    Inventor: Yoshiyuki Yasui
  • Patent number: 10520051
    Abstract: A vehicular electrical braking device equipped with a control means for driving an electric motor and a lock mechanism, the electric motor pressing a friction member against a rotary member, and the lock mechanism applying parking brake. The control means comprises steps of: calculating an instruction pressure force on the basis of the amount of brake operation; calculating a parking pressure force on the basis of a parking signal; determining as a target pressure force the greater one of the instruction pressure force and the parking pressure force; adjusting the amount of power to be applied to the electrical motor such that an actual pressure force matches the target pressure force on the basis of the target pressure force and the actual pressure force; and controlling the operation of the lock mechanism on the basis of the actual pressure force.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: December 31, 2019
    Assignee: ADVICS CO., LTD.
    Inventor: Yoshiyuki Yasui
  • Publication number: 20190118784
    Abstract: A braking control device generates a force for pressing a friction member against a rotating member fixed to a wheel of the vehicle via an electric motor controlled by a controller in accordance with an operation amount of an operation member. A pressing force sensor detects a pressing force actual value, and a rotation angle sensor detects a rotation angle actual value of the motor. The controller determines whether an operating state of the pressing force sensor is appropriate. When the operating state is appropriate, the motor output is adjusted based on the pressing force actual value, a correlation between the pressing force actual value and the rotation angle actual value is stored, and a conversion calculation map is created based on the correlation. When the operating state is not appropriate, the motor output is adjusted based on the rotation angle actual value and the conversion calculation map.
    Type: Application
    Filed: April 7, 2017
    Publication date: April 25, 2019
    Applicant: ADVICS CO., LTD.
    Inventor: Yoshiyuki Yasui
  • Publication number: 20190023248
    Abstract: This electric braking device is provided with: an electric motor MTR that, in accordance with an operation amount Bpa of a braking operation member BP caused by the driver of the vehicle, generates a pressing force Fba, being a force pressing a friction member MSB against a rotary member KTB that rotates integrally with a wheel WHL of the vehicle; a caliper CRP fixed to the electric motor MTR; a circuit board KBN to which a microprocessor MPR and a bridge circuit BRG are mounted, such that the electric motor MTR is driven; and a motor pin PMT that feeds power from the circuit board KBN to the electric motor MTR. The motor pin PMT penetrates a holding member HJB and is pressed into the circuit board KBN, which is fixed to the caliper CRP by the holding member HJB and the motor pin PMT.
    Type: Application
    Filed: January 18, 2017
    Publication date: January 24, 2019
    Applicant: ADVICS CO., LTD.
    Inventor: Yoshiyuki Yasui
  • Publication number: 20190016325
    Abstract: This electric braking device is provided with: an electric motor MTR that, in accordance with an operation amount Bpa of a braking operation member BP, generates a pressing force Fba, being a force pressing a friction member MSB against a rotary member KTB that rotates integrally with a wheel WHL of the vehicle; and a circuit board KBN to which a processor MPR and a bridge circuit BRG are mounted. The device is further provided with a rotation angle sensor MKA for detecting the rotation angle Mka of the electric motor, and drives the electric motor MTR on the basis of the rotation angle Mka. An end face Mmk of the rotation angle sensor MKA is fixed so as to be in contact with the circuit board KBN. The device is further provided with a pressing force sensor FBA for detecting the pressing force Fba, and drives the electric motor MTR on the basis of the pressing force Fba. An end face Mfb of the pressing force sensor FBA is fixed so as to be in contact with the circuit board KBN.
    Type: Application
    Filed: January 19, 2017
    Publication date: January 17, 2019
    Applicant: ADVICS CO., LTD.
    Inventors: Yoshiyuki Yasui, Tomonori Katsuyama
  • Publication number: 20190003536
    Abstract: A vehicular electrical braking device equipped with a control means for driving an electric motor and a lock mechanism, the electric motor pressing a friction member against a rotary member, and the lock mechanism applying parking brake. The control means comprises steps of: calculating an instruction pressure force on the basis of the amount of brake operation; calculating a parking pressure force on the basis of a parking signal; determining as a target pressure force the greater one of the instruction pressure force and the parking pressure force; adjusting the amount of power to be applied to the electrical motor such that an actual pressure force matches the target pressure force on the basis of the target pressure force and the actual pressure force; and controlling the operation of the lock mechanism on the basis of the actual pressure force.
    Type: Application
    Filed: December 21, 2016
    Publication date: January 3, 2019
    Applicant: ADVICS CO., LTD.
    Inventor: Yoshiyuki YASUI
  • Publication number: 20180345935
    Abstract: An electric braking device includes: an electric motor for pressing a friction member against a rotary member that rotates integrally with a vehicle wheel; a lock mechanism for locking rotation of the electric motor and applying a parking brake in accordance with operation on a parking switch; and a control for driving the electric motor and the lock mechanism. The control increases the electricity amount sent to the electric motor when a pressing force is less than a preset lower value at the time the parking switch is switched from off to on, starts actuating the lock mechanism when the pressing force equals or exceeds the lower value, and, when the pressing force is greater than a preset upper value greater than or equal to the lower value, starts actuating the lock mechanism when the pressing force equals or exceeds the upper value.
    Type: Application
    Filed: December 5, 2016
    Publication date: December 6, 2018
    Applicant: ADVICS CO., LTD.
    Inventor: Yoshiyuki YASUI
  • Patent number: 10138960
    Abstract: The present invention is provided with a power transmission member rotatably supported by a caliper, and a ratchet wheel fixed by the member. A first linear direction movement of a pawl member that engages with a mobile member of a solenoid is guided by a guide member fixed by the caliper. The pawl member is continuously pressed in a release direction by an elastic member. The interlocking force in an interlocking direction, imparted by mobile member of the solenoid mobile member to the pawl member, and the release force in the release direction, which is imparted by the elastic member to the pawl member oppose each other, and the interlocking force is larger than the release force. The pawl member and the mobile member move linearly together in one of the interlocking direction and the release direction.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: November 27, 2018
    Assignee: ADVICS CO., LTD.
    Inventors: Yoshiyuki Yasui, Shinichiro Yukoku, Naomi Emura
  • Publication number: 20180319384
    Abstract: This electric braking device for a vehicle imparts to the wheels of the vehicle a braking torque in accordance with the output of an electric motor. A vehicle body-side electronic control unit calculates a command value for the output of the electric motor on the basis of the amount of operation performed on a braking operation member. A wheel-side electronic control unit adjusts the output of the electric motor on the basis of the command value. The vehicle body-side electronic control unit calculates the vehicle body speed on the basis of the wheel speed. The wheel-side electronic control unit adjusts the output of the electric motor so as to prevent an increase in slippage of the wheels on the basis of the vehicle body speed and the wheel speed.
    Type: Application
    Filed: November 25, 2016
    Publication date: November 8, 2018
    Applicants: ADVICS CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshiyuki YASUI, Naoki YABUSAKI
  • Patent number: 10023167
    Abstract: This electric braking device uses drive torque of an electric motor to push a friction member against a rotating member secured to a vehicle wheel and produce braking torque in the vehicle wheel. This device comprises a body power source for electric motor power supply secured to a body of the vehicle, and a vehicle wheel power source for electric motor power supply secured to the vehicle wheel. The body power source supplies power to the vehicle wheel power source via a first electric path, and the vehicle wheel power source supplies power to the electric motor via a second electric path. When braking torque is produced in the vehicle wheel, the electric motor is normally driven using the vehicle wheel power source. An electric braking device is thereby provided in which a power line electrically connecting the body side and the vehicle wheel side bends readily.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: July 17, 2018
    Assignee: ADVICS CO., LTD.
    Inventors: Yoshiyuki Yasui, Hiroyuki Kodama, Motoshi Suzuki
  • Patent number: 9975531
    Abstract: A vehicle brake control device includes an electric motor controlled based on a target energization amount calculated based on an operation amount (Bpa) of a braking operation member. Based on the operation amount (Bpa), it is determined whether or not an inertia compensation control for compensating for the influence of the inertia of a brake actuator is necessary. When the inertia compensation control is determined to be necessary, an inertia compensation energization amount for compensating for the influence of the inertia of the brake actuator is calculated based on a time-series pattern set in advance based on the maximum response of the brake actuator. Based on the inertia compensation energization amount, the target energization amount is calculated. The vehicle brake control device is thus able to generate a braking torque that appropriately compensates for the influence of the inertia of the entire device including the inertia of the electric motor.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: May 22, 2018
    Assignee: ADVICS CO., LTD.
    Inventors: Yoshiyuki Yasui, Hiroyuki Kodama, Naotoshi Satake
  • Patent number: 9889831
    Abstract: A vehicle brake control device generates rear wheel braking torque by an electric motor by pressing a friction member against a rotating member rotating together with the rear wheel, reduces rear wheel braking torque by controlling the electric motor based on a target energization amount calculated from a slip state quantity of the rear wheel, and rapidly stops electric motor rotation motion based on an adjusted target energization amount calculated from the target energization amount and a slip state quantity of a front wheel.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: February 13, 2018
    Assignees: ADVICS CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshiyuki Yasui, Hiroyuki Kodama, Takuya Hirano, Naoki Yabusaki, Takayuki Yamamoto