Patents by Inventor Asuka Koike

Asuka Koike 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: 20240019888
    Abstract: A push-type input device according to one embodiment includes: an operation knob configured to receive a pushing operation by an operator; a click sensation-imparting mechanism configured to impart a click sensation to the pushing operation; a slider configured to slide in a predetermined sliding direction in response to the pushing operation; a rotating body configured to rotate in response to sliding of the slider; a sensor configured to detect a rotation angle of the rotating body; and a determination section configured to perform a switch-on determination based on a detection result of the rotation angle by the sensor. The determination section performs the switch-on determination between the rotation angle of the rotating body corresponding to the maximum load in load characteristics of the pushing operation and the rotation angle of the rotating body corresponding to the minimum load in load characteristics of the pushing operation.
    Type: Application
    Filed: August 3, 2023
    Publication date: January 18, 2024
    Inventors: Asuka KOIKE, Shigeru FURUKI, Daisaku SUGAWARA, Masanori FUJITA, Masato FUMIWAKE, Hayate NATSUSAKA, Yu TAKEDA
  • Patent number: 11874684
    Abstract: An operation input device to be mounted on a vehicle includes a support part to be attached to the vehicle, an operating member supported by the support part and configured to be operated by a person, an operation sensing part configured to sense an operation on the operating member, a tactile feedback generating part provided inside the operating member and configured to give tactile feedback to the person, and a control part configured to control the tactile feedback generating part to produce the tactile feedback when the operation is sensed in the operation sensing part, the operating member is provided so as to extend from the support part in a first direction intersecting the traveling direction of the vehicle, and the operating member is restricted so as not to rotate in a swing operation in which a direction intersecting the first direction serves as the axis of rotation.
    Type: Grant
    Filed: March 7, 2022
    Date of Patent: January 16, 2024
    Assignee: ALPS ALPINE CO., LTD.
    Inventors: Asuka Koike, Takeaki Maehata
  • Patent number: 11604488
    Abstract: An input device includes a fixed unit, a rotary member rotatably supported by the fixed unit, a rotation-detecting unit that detects a rotation angle of the rotary member, a brake-applying unit that applies a braking force to the rotary member, a torque-applying unit that applies a driving torque to the rotary member, and a control unit that controls the brake-applying unit and the torque-applying unit. The brake-applying unit includes magnetorheological fluid, a brake-applying coil that applies a magnetic field to the magnetorheological fluid, a shaft to which braking torque that changes with viscosity of the magnetorheological fluid is applied, and a transmission gear provided on the shaft and that is in mesh with a gear provided on the rotary member. The shaft is positioned on an outer side with respect to the rotary member in a radial direction of the rotary member.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: March 14, 2023
    Inventors: Asuka Koike, Takeaki Maehata, Ryuichiro Yasuhara, Kazunari Takahashi, Atsushi Goto
  • Publication number: 20230068870
    Abstract: An electromagnetic brake device includes an armature rotatably supported about a rotational axis; a yoke including a groove, an inner cylinder portion, and an outer cylinder portion; and a coil arranged in the groove and configured to generate a magnetic force when energized and thereby attract the armature to the yoke. A first opposing surface of the armature facing the yoke includes a sliding surface configured to slide on the outer cylinder portion of the yoke, and a recessed portion disposed inward of the sliding surface in a radial direction and recessed in a direction away from the yoke. An inner perimeter area of a second opposing surface of the outer cylinder portion of the yoke and a third opposing surface of the inner cylinder portion of the yoke face the recessed portion of the armature and do not contact the first opposing surface of the armature.
    Type: Application
    Filed: October 18, 2022
    Publication date: March 2, 2023
    Inventors: Asuka KOIKE, Shigeru FURUKI
  • Patent number: 11536332
    Abstract: A torque generation apparatus includes a magnetic disc rotatable about a rotation axis, a first yoke, a second yoke, a magnetic viscous fluid placed between the magnetic disc and the first yoke and the second yoke, a coil, and a third yoke. The coil overlaps with the magnetic disc as viewed along the rotation axis. The third yoke constitutes a magnetic path of a magnetic field generated by the coil together with the first yoke and the second yoke. The magnetic disc includes a torque increasing portion at at least one of a surface facing the first yoke and a surface facing the second yoke. The torque increasing portion is provided in an outer circumferential area of the magnetic disc in a radial direction and causes a shearing force to a cluster of the magnetic viscous fluid to become larger than that in the inner circumferential area.
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: December 27, 2022
    Inventors: Asuka Koike, Misuzu Takahashi, Kazunari Takahashi, Tatsuhiro Tomiyama
  • Patent number: 11401984
    Abstract: A torque generating device includes a magnetic disk configured to rotate around a rotation axis, first and second yokes located on opposite sides across the magnetic disk, a coil disposed to overlap the magnetic disk along a direction of the rotation axis, a third yoke of which at least a region proximity to the magnetic disk is located outside the magnetic disk and the coil and that makes up a magnetic path of a magnetic field generated by the coil with the first and second yokes, and a magnetic viscous fluid filled between the magnetic disk and the first and second yokes. The third yoke has a magnetic gap between the third and first yokes. The magnetic gap is formed at a position outside an outer peripheral edge of the magnetic disk or overlapping the outer peripheral edge of the magnetic disk along the direction of the rotation axis.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: August 2, 2022
    Assignee: ALPS ALPINE CO., LTD.
    Inventors: Asuka Koike, Kazunari Takahashi, Misuzu Takahashi, Yoshihiro Kuge, Atsushi Goto
  • Publication number: 20220187865
    Abstract: An operation input device to be mounted on a vehicle includes a support part to be attached to the vehicle, an operating member supported by the support part and configured to be operated by a person, an operation sensing part configured to sense an operation on the operating member, a tactile feedback generating part provided inside the operating member and configured to give tactile feedback to the person, and a control part configured to control the tactile feedback generating part to produce the tactile feedback when the operation is sensed in the operation sensing part, the operating member is provided so as to extend from the support part in a first direction intersecting the traveling direction of the vehicle, and the operating member is restricted so as not to rotate in a swing operation in which a direction intersecting the first direction serves as the axis of rotation.
    Type: Application
    Filed: March 7, 2022
    Publication date: June 16, 2022
    Inventors: Asuka KOIKE, Takeaki MAEHATA
  • Patent number: 11287841
    Abstract: An operating device according to the present invention includes magnetic field generation means. The magnetic field generation means includes a coil generating a magnetic field when energized, and a yoke forming a magnetic path for the magnetic field passing through a rotor. A control unit includes magnetization means and rotational torque control means. The magnetization means supplies a current to energize the coil such that a residual magnetic field in the yoke is held at a predetermined magnitude. The rotational torque control means adjusts a current value applied to the coil in accordance with the magnitude of the residual magnetic field in the yoke. An absolute value of a maximum value of the current value applied to the coil by the rotational torque control means is smaller than an absolute value of a current value applied by the magnetization means.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: March 29, 2022
    Inventors: Asuka Koike, Kazunari Takahashi, Misuzu Takahashi, Atsushi Goto, Ryuichiro Yasuhara
  • Patent number: 11205944
    Abstract: An operating device includes a magnetic disk capable of rotational motion around a rotation axis, a first yoke located on one side and a second yoke located on an other side across the magnetic disk, a coil disposed to overlap the magnetic disk when viewed in a direction along a direction in which the rotation axis extends, a magnetic viscous fluid filled between the magnetic disk and each of the first yoke and the second yoke, a magnetic measurement portion for measuring magnetism caused by a magnetic field using the magnetic viscous fluid, the magnetic disk, the first yoke, and the second yoke as a magnetic path, and a control unit configured to acquire a measured value from the magnetic measurement portion and control a magnetic field that is generated by the coil based on the measured value to change a viscosity of the magnetic viscous fluid.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: December 21, 2021
    Assignee: ALPS ALPINE CO., LTD.
    Inventors: Asuka Koike, Kazunari Takahashi, Atsushi Goto, Yoshihiro Kuge, Misuzu Takahashi
  • Publication number: 20210181781
    Abstract: An operating device according to the present invention includes magnetic field generation means. The magnetic field generation means includes a coil generating a magnetic field when energized, and a yoke forming a magnetic path for the magnetic field passing through a rotor. A control unit includes magnetization means and rotational torque control means. The magnetization means supplies a current to energize the coil such that a residual magnetic field in the yoke is held at a predetermined magnitude. The rotational torque control means adjusts a current value applied to the coil in accordance with the magnitude of the residual magnetic field in the yoke. An absolute value of a maximum value of the current value applied to the coil by the rotational torque control means is smaller than an absolute value of a current value applied by the magnetization means.
    Type: Application
    Filed: February 25, 2021
    Publication date: June 17, 2021
    Inventors: Asuka KOIKE, Kazunari TAKAHASHI, Misuzu TAKAHASHI, Atsushi GOTO, Ryuichiro YASUHARA
  • Publication number: 20210079966
    Abstract: A torque generation apparatus includes a magnetic disc rotatable about a rotation axis, a first yoke, a second yoke, a magnetic viscous fluid placed between the magnetic disc and the first yoke and the second yoke, a coil, and a third yoke. The coil overlaps with the magnetic disc as viewed along the rotation axis. The third yoke constitutes a magnetic path of a magnetic field generated by the coil together with the first yoke and the second yoke. The magnetic disc includes a torque increasing portion at at least one of a surface facing the first yoke and a surface facing the second yoke. The torque increasing portion is provided in an outer circumferential area of the magnetic disc in a radial direction and causes a shearing force to a cluster of the magnetic viscous fluid to become larger than that in the inner circumferential area.
    Type: Application
    Filed: November 2, 2020
    Publication date: March 18, 2021
    Inventors: Asuka KOIKE, Misuzu TAKAHASHI, Kazunari TAKAHASHI, Tatsuhiro TOMIYAMA
  • Publication number: 20200332846
    Abstract: An input device includes a brake applying unit configured to apply a braking force to a rotating body and a torque applying unit configured to apply a driving torque to the rotating body. The brake applying unit includes a rotary plate rotatable together with the rotating body, magnetic viscous fluid disposed in a gap between a fixed portion and the rotary plate, and a brake applying coil configured to apply a magnetic field to the magnetic viscous fluid. The torque applying unit includes a stator and a rotor. One of the stator and the rotor includes a magnet and the other includes torque applying coils inducing magnetic fields for generating the driving torque. A controller is provided to control currents applied to the brake applying coil and the torque applying coils. The torque applying unit is disposed to surround an outer periphery of the brake applying unit.
    Type: Application
    Filed: June 30, 2020
    Publication date: October 22, 2020
    Inventors: Asuka KOIKE, Yoshihiro KUGE, Kazunari TAKAHASHI, Misuzu TAKAHASHI
  • Publication number: 20200326746
    Abstract: An input device includes a fixed unit, a rotary member rotatably supported by the fixed unit, a rotation-detecting unit that detects a rotation angle of the rotary member, a brake-applying unit that applies a braking force to the rotary member, a torque-applying unit that applies a driving torque to the rotary member, and a control unit that controls the brake-applying unit and the torque-applying unit. The brake-applying unit includes magnetorheological fluid, a brake-applying coil that applies a magnetic field to the magnetorheological fluid, a shaft to which braking torque that changes with viscosity of the magnetorheological fluid is applied, and a transmission gear provided on the shaft and that is in mesh with a gear provided on the rotary member. The shaft is positioned on an outer side with respect to the rotary member in a radial direction of the rotary member.
    Type: Application
    Filed: June 25, 2020
    Publication date: October 15, 2020
    Inventors: Asuka KOIKE, Takeaki MAEHATA, Ryuichiro YASUHARA, Kazunari TAKAHASHI, Atsushi GOTO
  • Publication number: 20200158191
    Abstract: A torque generating device includes a magnetic disk configured to rotate around a rotation axis, first and second yokes located on opposite sides across the magnetic disk, a coil disposed to overlap the magnetic disk along a direction of the rotation axis, a third yoke of which at least a region proximity to the magnetic disk is located outside the magnetic disk and the coil and that makes up a magnetic path of a magnetic field generated by the coil with the first and second yokes, and a magnetic viscous fluid filled between the magnetic disk and the first and second yokes. The third yoke has a magnetic gap between the third and first yokes. The magnetic gap is formed at a position outside an outer peripheral edge of the magnetic disk or overlapping the outer peripheral edge of the magnetic disk along the direction of the rotation axis.
    Type: Application
    Filed: January 21, 2020
    Publication date: May 21, 2020
    Inventors: Asuka Koike, Kazunari Takahashi, Misuzu Takahashi, Yoshihiro Kuge, Atsushi Goto
  • Publication number: 20200127550
    Abstract: An operating device includes a magnetic disk capable of rotational motion around a rotation axis, a first yoke located on one side and a second yoke located on an other side across the magnetic disk, a coil disposed to overlap the magnetic disk when viewed in a direction along a direction in which the rotation axis extends, a magnetic viscous fluid filled between the magnetic disk and each of the first yoke and the second yoke, a magnetic measurement portion for measuring magnetism caused by a magnetic field using the magnetic viscous fluid, the magnetic disk, the first yoke, and the second yoke as a magnetic path, and a control unit configured to acquire a measured value from the magnetic measurement portion and control a magnetic field that is generated by the coil based on the measured value to change a viscosity of the magnetic viscous fluid.
    Type: Application
    Filed: December 19, 2019
    Publication date: April 23, 2020
    Inventors: Asuka Koike, Kazunari Takahashi, Atsushi Goto, Yoshihiro Kuge, Misuzu Takahashi
  • Patent number: D879038
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: March 24, 2020
    Assignee: ALPS ALPINE CO., LTD.
    Inventors: Asuka Koike, Kazunari Takahashi
  • Patent number: D880421
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: April 7, 2020
    Assignee: ALPS ALPINE CO., LTD.
    Inventors: Asuka Koike, Kazunari Takahashi
  • Patent number: D906966
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: January 5, 2021
    Assignee: ALPS ALPINE CO., LTD.
    Inventors: Asuka Koike, Misuzu Takahashi, Kazunari Takahashi