Patents by Inventor Keishi Otsubo

Keishi Otsubo 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: 11899355
    Abstract: An optical unit includes an optical element, a holder, a first support portion, a second support portion, a first swing mechanism, and a second swing mechanism. The holder holds the optical element. The first support portion supports the holder so as to be swingable about a first swing axis. The second support portion supports the first support portion so as to be swingable about the second swing axis. The second swing mechanism includes a second magnet and a second coil. The second magnet is arranged on the first support portion. The second coil is arranged on the second support portion.
    Type: Grant
    Filed: September 13, 2021
    Date of Patent: February 13, 2024
    Assignee: NIDEC CORPORATION
    Inventors: Takayuki Iwase, Tomohiro Egawa, Keishi Otsubo
  • Patent number: 11867926
    Abstract: An optical unit that corrects a shake of an optical module includes: a movable portion having a holder that holds the optical module; and a fixed portion that rotatably supports the movable portion. The movable portion is rotatable relative to the fixed portion in first-third rotation directions correspondingly centered on first-third axes which correspondingly extend in first-third directions. The first direction is parallel to an optical axis direction of the optical module in a state in which the movable portion is stationary. The first direction, the second direction, and the third direction are perpendicular to each other. The movable portion further includes a protrusion protruding toward the fixed portion from an end of the holder closer to the fixed portion in the optical axis direction. The fixed portion includes a support portion that rotatably supports the protrusion.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: January 9, 2024
    Assignee: NIDEC CORPORATION
    Inventors: Soichiro Kimura, Kazuhiro Sazai, Keishi Otsubo, Tomohiro Egawa, Genki Tanaka
  • Publication number: 20230359103
    Abstract: An optical assembly includes a fixed body and a movable body supported swingably with respect to the fixed body, and the movable body includes an optical element including an optical axis, a holder into which the optical element is insertable, a contact portion in the holder and in contact with the fixed body, and an elastic body to press the contact portion toward the fixed body.
    Type: Application
    Filed: December 22, 2020
    Publication date: November 9, 2023
    Inventors: Shogo TANAKA, Keishi OTSUBO, Tomohiro EGAWA
  • Patent number: 11747642
    Abstract: In an optical unit, a first swing mechanism swings a holder with reference to the y-axis direction, and a second swing mechanism swings the holder with reference to the z-axis direction. A case has a first recess that accommodates at least a part of a first protrusion of the holder and a second recess that accommodates at least a part of a second protrusion of the holder. The first recess has a first side surface located on one side in the y-axis direction of the first protrusion, a second side surface located on the other side in the y-axis direction of the first protrusion, and a bottom surface. The second recess has a first side surface located on one side in the y-axis direction of the second protrusion, a second side surface located on the other side in the y-axis direction of the second protrusion, and a bottom surface.
    Type: Grant
    Filed: February 15, 2021
    Date of Patent: September 5, 2023
    Assignee: NIDEC CORPORATION
    Inventors: Tomohiro Egawa, Keishi Otsubo, Kazuhiro Sazai, Genki Tanaka, Takayuki Iwase
  • Publication number: 20230102945
    Abstract: An optical assembly includes a movable body including an optical element, a fixed body that is located around the movable body and swingably supports the movable body, and a swing mechanism that causes the movable body to swing about a swing axis with respect to the fixed body. The swing mechanism is located in a first direction orthogonal to the swing axis, and the swing mechanism includes a magnet on the movable body and a coil on the fixed body. The fixed body includes a circuit board that is located on one side in the first direction of the fixed body and electrically connected to the coil, a reinforcing plate that is on the circuit board and includes a depression depressed toward another side in the first direction, and a magnetic body that is located in the depression and at least partially overlaps the magnet.
    Type: Application
    Filed: September 20, 2022
    Publication date: March 30, 2023
    Inventors: Kazuhiro SAZAI, Keishi OTSUBO
  • Patent number: 11550202
    Abstract: An optical unit includes a movable body, a fixed body, and a first swing mechanism. The fixed body supports the movable body so as to be swingable in a first swing direction about a first swing axis. One of the movable body and the fixed body has a first magnet. The other of the movable body and the fixed body has a first magnetic body. The first magnetic body has a first magnetic body portion, a second magnetic body portion, and a third magnetic body portion. The first magnetic body portion passes through an axis perpendicular to each of the first swing axis and the optical axis of an optical element. The second magnetic body portion is disposed on one side in the first swing direction of the first magnetic body portion. The third magnetic body portion is disposed on the other side in the first swing direction of the first magnetic body portion.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: January 10, 2023
    Assignee: NIDEC CORPORATION
    Inventors: Kazuhiro Sazai, Tomohiro Egawa, Keishi Otsubo, Genki Tanaka, Takayuki Iwase
  • Patent number: 11523040
    Abstract: An optical assembly includes an optical element including a reflection surface to reflect light in a first axis direction, a holder to hold the optical element, a case to support the holder, a first swing mechanism to swing the holder around a first swing axis, and a second swing mechanism to swing the holder around a second swing axis perpendicular to the first swing axis. The holder includes first and second protrusions. The case includes first and second recesses. Each of the recesses includes a first side surface located on one side in the axial direction of the second swing axis and a second side surface located on the other side with respect to the corresponding protrusion. At least one of the first and second side surfaces includes an inclined surface inclined with respect to the second swing axis.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: December 6, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Takayuki Iwase, Tomohiro Egawa, Keishi Otsubo, Kazuhiro Sazai, Genki Tanaka
  • Publication number: 20220269148
    Abstract: An optical unit includes a movable body having an optical module having an optical axis and having a protruding portion protruding in an optical axis direction in which the optical axis extends, a fixed body facing the protruding portion of the movable body and having a recess recessed in the optical axis direction, a plurality of support mechanisms each of which is located between the recess of the fixed body and the protruding portion of the movable body and supports the movable body with respect to the fixed body, and a swing mechanism that swings the movable body with respect to the fixed body. A plurality of the support mechanisms are arranged on the same circumference around the optical axis, and the swing mechanism is located radially outward with respect to the protruding portion of the movable body.
    Type: Application
    Filed: February 24, 2022
    Publication date: August 25, 2022
    Inventors: Keishi OTSUBO, Kazuhiro SAZAI, Shinji MINAMISAWA
  • Publication number: 20220269102
    Abstract: An optical unit includes a fixed body, a movable body having an optical module having an optical axis, a support portion arranged on the fixed body and supporting the movable body, and a swing mechanism that swings the movable body with respect to the fixed body. The support portion is located radially inside about the optical axis with respect to the swing mechanism. The optical unit further includes a protruding portion that is arranged on a first one of the movable body and the fixed body, and protrudes from the first one of the movable body and the fixed body toward a second one to interpose a gap between the movable body and the fixed body. A shortest distance between the protruding portion and the second one of the movable body and the fixed body is shorter than a shortest distance between the movable body and the fixed body.
    Type: Application
    Filed: February 24, 2022
    Publication date: August 25, 2022
    Inventors: Kazuhiro SAZAI, Keishi OTSUBO
  • Publication number: 20220100053
    Abstract: An optical unit includes a movable body, a fixed body, and a first swing mechanism. The fixed body supports the movable body so as to be swingable in a first swing direction about a first swing axis. One of the movable body and the fixed body has a first magnet. The other of the movable body and the fixed body has a first magnetic body. The first magnetic body has a first magnetic body portion, a second magnetic body portion, and a third magnetic body portion. The first magnetic body portion passes through an axis perpendicular to each of the first swing axis and the optical axis of an optical element. The second magnetic body portion is disposed on one side in the first swing direction of the first magnetic body portion. The third magnetic body portion is disposed on the other side in the first swing direction of the first magnetic body portion.
    Type: Application
    Filed: September 29, 2021
    Publication date: March 31, 2022
    Inventors: Kazuhiro SAZAI, Tomohiro EGAWA, Keishi OTSUBO, Genki TANAKA, Takayuki IWASE
  • Publication number: 20220099993
    Abstract: An optical unit that corrects a shake of an optical module includes a movable portion, a fixed portion, and a separation suppressing portion. The movable portion includes a holder and a protrusion. The holder holds the optical module. The protrusion protrudes toward the fixed portion from an end of the holder closer to the fixed portion in an optical axis direction in which an optical axis of the optical module extends. The fixed portion includes a support portion. The support portion rotatably supports the protrusion. The separation suppressing portion suppresses separation of the protrusion from the support portion.
    Type: Application
    Filed: September 29, 2021
    Publication date: March 31, 2022
    Inventors: Kazuhiro SAZAI, Keishi OTSUBO, Genki TANAKA
  • Publication number: 20220099994
    Abstract: An optical unit that corrects a shake of an optical module includes: a movable portion having a holder that holds the optical module; and a fixed portion that rotatably supports the movable portion. The movable portion is rotatable relative to the fixed portion in first-third rotation directions correspondingly centered on first-third axes which correspondingly extend in first-third directions. The first direction is parallel to an optical axis direction of the optical module in a state in which the movable portion is stationary. The first direction, the second direction, and the third direction are perpendicular to each other. The movable portion further includes a protrusion protruding toward the fixed portion from an end of the holder closer to the fixed portion in the optical axis direction. The fixed portion includes a support portion that rotatably supports the protrusion.
    Type: Application
    Filed: September 29, 2021
    Publication date: March 31, 2022
    Inventors: Soichiro KIMURA, Kazuhiro SAZAI, Keishi OTSUBO, Tomohiro EGAWA, Genki TANAKA
  • Publication number: 20220082851
    Abstract: An optical unit includes a movable body, a support, and a swing mechanism. The movable body includes an optical element that changes a traveling direction of light. The support supports the movable body in a manner that the movable body is swingable about a swing axis. One of the movable body and the support has at least three protrusions. The other of the movable body and the support has an axial center recess. The at least three protrusions are disposed on the same circumference about the swing axis. The recess constitutes at least a part of a circle around the swing axis.
    Type: Application
    Filed: September 13, 2021
    Publication date: March 17, 2022
    Inventors: Takayuki IWASE, Tomohiro EGAWA, Keishi OTSUBO, Kazuhiro SAZAI, Genki TANAKA
  • Publication number: 20220082902
    Abstract: An optical unit includes an optical element, a holder, a first support portion, a second support portion, a first swing mechanism, and a second swing mechanism. The holder holds the optical element. The first support portion supports the holder so as to be swingable about a first swing axis. The second support portion supports the first support portion so as to be swingable about the second swing axis. The second swing mechanism includes a second magnet and a second coil. The second magnet is arranged on the first support portion. The second coil is arranged on the second support portion.
    Type: Application
    Filed: September 13, 2021
    Publication date: March 17, 2022
    Inventors: Takayuki IWASE, Tomohiro EGAWA, Keishi OTSUBO
  • Publication number: 20210368078
    Abstract: An optical assembly includes an optical element including a reflection surface to reflect light in a first axis direction, a holder to hold the optical element, a case to support the holder, a first swing mechanism to swing the holder around a first swing axis, and a second swing mechanism to swing the holder around a second swing axis perpendicular to the first swing axis. The holder includes first and second protrusions. The case includes first and second recesses. Each of the recesses includes a first side surface located on one side in the axial direction of the second swing axis and a second side surface located on the other side with respect to the corresponding protrusion. At least one of the first and second side surfaces includes an inclined surface inclined with respect to the second swing axis.
    Type: Application
    Filed: May 10, 2021
    Publication date: November 25, 2021
    Inventors: Takayuki IWASE, Tomohiro EGAWA, Keishi OTSUBO, Kazuhiro SAZAI, Genki TANAKA
  • Publication number: 20210294111
    Abstract: In an optical unit, a first swing mechanism swings a holder with reference to the y-axis direction, and a second swing mechanism swings the holder with reference to the z-axis direction. A case has a first recess that accommodates at least a part of a first protrusion of the holder and a second recess that accommodates at least a part of a second protrusion of the holder. The first recess has a first side surface located on one side in the y-axis direction of the first protrusion, a second side surface located on the other side in the y-axis direction of the first protrusion, and a bottom surface. The second recess has a first side surface located on one side in the y-axis direction of the second protrusion, a second side surface located on the other side in the y-axis direction of the second protrusion, and a bottom surface.
    Type: Application
    Filed: February 15, 2021
    Publication date: September 23, 2021
    Inventors: Tomohiro EGAWA, Keishi OTSUBO, Kazuhiro SAZAI, Genki TANAKA, Takayuki IWASE
  • Patent number: 10848018
    Abstract: A stator is provided. In this stator, a stator core comprises: an outer peripheral ring part formed in a ring shape; and multiple salient pole parts protruded from the outer peripheral ring part to an inner side in a radial direction of the stator. The outer peripheral ring part comprises outer peripheral parts in a same number as multiple salient pole parts. When an outer side face of the outer peripheral part in the radial direction is an outer peripheral face, both end side portions in the circumferential direction of the outer peripheral face of one of the outer peripheral parts are respectively formed to be a curved face part in a convex curved face shape which is a circular arc shape, curvature radii of the circular arc shapes are equal to each other and their curvature centers are common when viewed in an axial direction of the stator.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: November 24, 2020
    Assignee: NIDEC SANKYO CORPORATION
    Inventors: Keishi Otsubo, Shinichi Utsumi, Yuji Maruyama, Hideo Shimodaira
  • Patent number: 10458413
    Abstract: In the pumping apparatus of the invention, a circuit board is secured to a portion of a partition wall member on a side of a first direction, and disposed closer to the side of the first direction than a stator core and an insulation member. A portion of a terminal pin on the side of the first direction is secured to the circuit board, and a portion of the terminal pin on a side of a second direction is secured to the insulation member. A first contact surface facing the side of the first direction is formed on the insulation member. A second contact surface is formed on the partition wall member. The second contact surface faces the side of the second direction. Also, the first contact surface is in contact with the second contact surface to restrict a movement of the stator in the first direction.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: October 29, 2019
    Assignee: NIDEC SANKYO CORPORATION
    Inventor: Keishi Otsubo
  • Publication number: 20190052130
    Abstract: A stator is provided. In this stator, a stator core comprises: an outer peripheral ring part formed in a ring shape; and multiple salient pole parts protruded from the outer peripheral ring part to an inner side in a radial direction of the stator. The outer peripheral ring part comprises outer peripheral parts in a same number as multiple salient pole parts. When an outer side face of the outer peripheral part in the radial direction is an outer peripheral face, both end side portions in the circumferential direction of the outer peripheral face of one of the outer peripheral parts are respectively formed to be a curved face part in a convex curved face shape which is a circular arc shape, curvature radii of the circular arc shapes are equal to each other and their curvature centers are common when viewed in an axial direction of the stator.
    Type: Application
    Filed: September 28, 2016
    Publication date: February 14, 2019
    Applicant: NIDEC SANKYO CORPORATION
    Inventors: Keishi OTSUBO, Shinichi UTSUMI, Yuji MARUYAMA, Hideo SHIMODAIRA
  • Patent number: 10148143
    Abstract: The motor of the invention includes the resin sealing member which covers a stator and a circuit board. The stator includes a stator core for winding a driving coil through an insulation member, and a terminal pin secured to the insulation member. The insulation member includes a press fitting portion for pressing and securing a portion of the terminal pin on a side of a second direction, whereas a portion of the terminal pin on a side of a first direction is soldered to the circuit board. A stopper portion is formed on a second direction end of the terminal pin. The stopper portion contacts a surface of the press fitting portion in the second direction to prevent the terminal pin from falling off in the first direction.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: December 4, 2018
    Assignee: NIDEC SANKYO CORPORATION
    Inventors: Keishi Otsubo, Shinichi Utsumi, Yuji Maruyama, Hideo Shimodaira