Patents by Inventor Ryoichi MITSUHATA

Ryoichi MITSUHATA 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: 11894745
    Abstract: A vibrating motor includes a stationary portion, and a movable portion capable of vibrating with respect to the stationary portion along a center axis extending in a vertical direction. The stationary portion includes a bearing portion which extends along the center axis and supports the movable portion to be able to vibrate along the center axis, and a coil including a conductive wire wound around the center axis. The bearing portion includes a first region including a coil inner region on a radially inner side of the coil.
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: February 6, 2024
    Assignee: NIDEC CORPORATION
    Inventors: Atsunori Hirata, Hiroaki Hirano, Ryoichi Mitsuhata
  • Publication number: 20240030794
    Abstract: A vibrating motor includes a stationary portion, a movable portion to vibrate with respect to the stationary portion along a center axis extending in a vertical direction, and an elastic portion. The stationary portion includes a bearing portion supporting the movable portion to enable vibration along the center axis and having a tubular shape extending along the center axis, a coil directly or indirectly opposing at least a portion of the movable portion in a radial direction, and a housing having a tubular shape extending along the center axis. The housing houses the bearing portion, the coil, and the movable portion. The elastic portion is between the movable portion and the housing.
    Type: Application
    Filed: October 5, 2023
    Publication date: January 25, 2024
    Inventors: Atsunori HIRATA, Ryoichi MITSUHATA
  • Patent number: 11876426
    Abstract: A vibrating motor includes a stationary portion, and a movable portion able to vibrate with respect to the stationary portion along a center axis extending in a vertical direction. The stationary portion includes a bearing portion which supports the movable portion to be able to vibrate along the center axis and has a tubular shape extending along the center axis, and a coil which directly or indirectly opposes at least a portion of the movable portion in a radial direction. A lower end portion of the bearing portion has a tubular shape extending along the center axis. A communication hole which penetrates in the vertical direction and allows an outside of the bearing portion and an inside of a portion above the lower end portion of the bearing portion to communicate with each other is provided on a radially inner side of the lower end portion.
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: January 16, 2024
    Assignee: NIDEC CORPORATION
    Inventors: Atsunori Hirata, Hiroaki Hirano, Ryoichi Mitsuhata
  • Patent number: 11804765
    Abstract: A vibrating motor includes a stationary portion, and a movable portion able to vibrate with respect to the stationary portion along a center axis extending in a vertical direction. The stationary portion includes a bearing portion which supports the movable portion to be able to vibrate along the center axis and has a tubular shape extending along the center axis, a coil which directly opposes at least a portion of the movable portion in a radial direction, and a top surface portion which is above the movable portion and connected to the movable portion with an elastic portion therebetween. The bearing portion includes a first region which opposes the movable portion in the radial direction with a first gap therebetween, and a second region which is above the first region and opposes the movable portion in the radial direction with a second gap wider than the first gap therebetween.
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: October 31, 2023
    Assignee: NIDEC CORPORATION
    Inventors: Atsunori Hirata, Ryoichi Mitsuhata
  • Publication number: 20230283155
    Abstract: A vibration motor and a tactile device are provided. The vibration motor has: a stationary portion; a movable portion having a magnet and capable of vibrating with respect to the stationary portion along a central axis extending in an up-down direction; and an elastic member. The stationary portion has: a housing, disposed radially outside from the movable portion and having a cylindrical shape extending along the central axis; a top surface portion, disposed above the movable portion, fixed to the housing, and extended in a direction intersecting with the central axis; and a coil, capable of applying a driving force to the movable portion. The elastic member is disposed below the top surface portion and above the movable portion. The elastic member is fixed to the top surface portion and the movable portion and supports the movable portion so that the movable portion can vibrate along the central axis.
    Type: Application
    Filed: May 14, 2023
    Publication date: September 7, 2023
    Applicant: NIDEC CORPORATION
    Inventors: Atsunori HIRATA, Ryoichi MITSUHATA
  • Patent number: 11699943
    Abstract: A vibration motor and a tactile device are provided. The vibration motor has: a stationary portion; a movable portion having a magnet and capable of vibrating with respect to the stationary portion along a central axis extending in an up-down direction; and an elastic member. The stationary portion has: a housing, disposed radially outside from the movable portion and having a cylindrical shape extending along the central axis; a top surface portion, disposed above the movable portion, fixed to the housing, and extended in a direction intersecting with the central axis; and a coil, capable of applying a driving force to the movable portion. The elastic member is disposed below the top surface portion and above the movable portion. The elastic member is fixed to both the top surface portion and the movable portion, and supports the movable portion so that the movable portion can vibrate along the central axis.
    Type: Grant
    Filed: July 8, 2021
    Date of Patent: July 11, 2023
    Assignee: NIDEC CORPORATION
    Inventors: Atsunori Hirata, Ryoichi Mitsuhata
  • Patent number: 11673164
    Abstract: A vibration motor and a tactile device are provided. The vibration motor has: a stationary portion; a movable portion, capable of vibrating with respect to the stationary portion along a central axis extending in an up-down direction; and an elastic member. The stationary portion has: a case including a housing disposed radially outside from the movable portion and having a cylindrical shape extending along the central axis; and a coil, capable of applying a driving force to the movable portion. The movable portion has: a magnet, extending along the central axis; and a holder, disposed above the magnet. The holder has: an upper portion, extending in a direction intersecting with the central axis and disposed above an upper surface of the magnet; and a side surface portion, extending downward from a radial outer edge part of the upper portion and fixed to a radial outer side surface of the magnet.
    Type: Grant
    Filed: July 8, 2021
    Date of Patent: June 13, 2023
    Assignee: NIDEC CORPORATION
    Inventors: Atsunori Hirata, Ryoichi Mitsuhata
  • Publication number: 20220209637
    Abstract: A vibrating motor includes a stationary portion, and a movable portion capable of vibrating with respect to the stationary portion along a center axis extending in a vertical direction. The stationary portion includes a bearing portion which extends along the center axis and supports the movable portion to be able to vibrate along the center axis, and a coil including a conductive wire wound around the center axis. The bearing portion includes a first region including a coil inner region on a radially inner side of the coil.
    Type: Application
    Filed: December 10, 2021
    Publication date: June 30, 2022
    Inventors: Atsunori HIRATA, Hiroaki HIRANO, Ryoichi MITSUHATA
  • Publication number: 20220209638
    Abstract: A vibrating motor includes a stationary portion, and a movable portion able to vibrate with respect to the stationary portion along a center axis extending in a vertical direction. The stationary portion includes a bearing portion which supports the movable portion to be able to vibrate along the center axis and has a tubular shape extending along the center axis, and a coil which directly or indirectly opposes at least a portion of the movable portion in a radial direction. A lower end portion of the bearing portion has a tubular shape extending along the center axis. A communication hole which penetrates in the vertical direction and allows an outside of the bearing portion and an inside of a portion above the lower end portion of the bearing portion to communicate with each other is provided on a radially inner side of the lower end portion.
    Type: Application
    Filed: December 10, 2021
    Publication date: June 30, 2022
    Inventors: Atsunori HIRATA, Hiroaki HIRANO, Ryoichi MITSUHATA
  • Publication number: 20220209639
    Abstract: A vibrating motor includes a stationary portion, and a movable portion able to vibrate with respect to the stationary portion along a center axis extending in a vertical direction. The stationary portion includes a bearing portion which supports the movable portion to be able to vibrate along the center axis and has a tubular shape extending along the center axis, a coil which directly opposes at least a portion of the movable portion in a radial direction, and a top surface portion which is above the movable portion and connected to the movable portion with an elastic portion therebetween. The bearing portion includes a first region which opposes the movable portion in the radial direction with a first gap therebetween, and a second region which is above the first region and opposes the movable portion in the radial direction with a second gap wider than the first gap therebetween.
    Type: Application
    Filed: December 10, 2021
    Publication date: June 30, 2022
    Inventors: Atsunori HIRATA, Ryoichi MITSUHATA
  • Publication number: 20220014081
    Abstract: A vibration motor and a tactile device are provided. The vibration motor has: a stationary portion; a movable portion having a magnet and capable of vibrating with respect to the stationary portion along a central axis extending in an up-down direction; and an elastic member. The stationary portion has: a housing, disposed radially outside from the movable portion and having a cylindrical shape extending along the central axis; a top surface portion, disposed above the movable portion, fixed to the housing, and extended in a direction intersecting with the central axis; and a coil, capable of applying a driving force to the movable portion. The elastic member is disposed below the top surface portion and above the movable portion. The elastic member is fixed to both the top surface portion and the movable portion, and supports the movable portion so that the movable portion can vibrate along the central axis.
    Type: Application
    Filed: July 8, 2021
    Publication date: January 13, 2022
    Applicant: NIDEC CORPORATION
    Inventors: Atsunori HIRATA, Ryoichi MITSUHATA
  • Publication number: 20220008955
    Abstract: A vibration motor and a tactile device are provided. The vibration motor has: a stationary portion; a movable portion, capable of vibrating with respect to the stationary portion along a central axis extending in an up-down direction; and an elastic member. The stationary portion has: a case including a housing disposed radially outside from the movable portion and having a cylindrical shape extending along the central axis; and a coil, capable of applying a driving force to the movable portion. The movable portion has: a magnet, extending along the central axis; and a holder, disposed above the magnet. The holder has: an upper portion, extending in a direction intersecting with the central axis and disposed above an upper surface of the magnet; and a side surface portion, extending downward from a radial outer edge part of the upper portion and fixed to a radial outer side surface of the magnet.
    Type: Application
    Filed: July 8, 2021
    Publication date: January 13, 2022
    Applicant: NIDEC CORPORATION
    Inventors: Atsunori HIRATA, Ryoichi MITSUHATA