Patents by Inventor Masato Gomyo

Masato Gomyo 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: 10996485
    Abstract: A laser pointer may include a laser light emitter that emits a laser beam, a housing accommodating the laser light emitter; a vibration detection sensor that detects a vibration produced in the housing, a shake correction mechanism that changes a direction of the laser beam emitted by the laser light emitter, and a controller that controls the direction of the laser beam, which is changed by the shake correction mechanism, into a direction so as to offset the vibration detected by the vibration detection sensor. The controller may be configured to calculate a frequency of the vibration; calculate a movement amount of the vibration; determine whether a vibration applied to the housing is caused by a hand-shake based on the frequency of the vibration and the movement amount of the vibration; and activate the shake correction mechanism in response to a determination that the vibration is caused by a hand-shake.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: May 4, 2021
    Assignee: NIDEC SANKYO CORPORATION
    Inventors: Takeshi Sue, Masato Gomyo, Ryoji Komatsu
  • Patent number: 10948736
    Abstract: To draw a flexible printed circuit board in a small space with high flexibility in an optical unit with shake correction function. In an optical unit with rolling correction function, a first flexible printed circuit board for an imaging element is drawn around an optical axis of the optical unit with rolling correction function such that the first flexible printed circuit board is wound by substantially a turn in a circumferential direction at an identical height in an optical axis direction. Furthermore, in a portion wound in the circumferential direction (i.e., a connection part), one end and the other end in the circumferential direction are at an identical height in the optical axis direction. Furthermore, a second flexible printed circuit board for a rolling magnetic driving mechanism and a third flexible printed circuit board for a swing magnetic driving mechanism are also drawn in a similar manner.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: March 16, 2021
    Assignee: NIDEC SANKYO CORPORATION
    Inventors: Shinji Minamisawa, Masato Gomyo, Takeshi Sue
  • Patent number: 10948737
    Abstract: An optical unit with shake correction function capable of reducing a weight of a rotation member to be rotated in rolling correction. An optical unit with shake correction function includes: a movable member; a swing supporting mechanism supporting the movable member such that the movable member is able to swing; and a fixation member supporting the movable member via the swing supporting mechanism. The movable member includes: an imaging module; a rotation seat supporting the imaging module; a rotation supporting mechanism supporting the rotation seat such that the rotation seat is able to rotate on an optical axis of the imaging module; a supporting member supporting the rotation seat via the rotation supporting mechanism; and a rolling magnetic driving mechanism causing the rotation seat to rotate. The imaging module and the rotation seat configure the rotation member to be rotated by the rolling magnetic driving mechanism.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: March 16, 2021
    Assignee: NIDEC SANKYO CORPORATION
    Inventors: Shinji Minamisawa, Takeshi Sue, Masato Gomyo
  • Patent number: 10809542
    Abstract: To provide a rolling magnetic driving unit that can be employed for both of an optical unit with shake correction function that causes an optical module to swing and rotate and an optical unit with shake correction function that causes the optical module to rotate, a second unit (i.e., a rolling magnetic driving unit) includes: a rotation seat; and a fixation member that supports the rotation seat via a bearing mechanism. The rotation seat and the bearing mechanism configure a rotation-supporting mechanism. The rotation-supporting mechanism supports a holder, which supports the optical module such that the optical module is able to swing, such the holder is able to rotate on the axis. Furthermore, the second unit includes a rolling magnetic driving mechanism, which includes a rolling driving coil that is held by the rotation seat and a rolling driving magnet that is held by the fixation member.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: October 20, 2020
    Assignee: NIDEC SANKYO CORPORATION
    Inventors: Shinji Minamisawa, Takeshi Sue, Masato Gomyo
  • Publication number: 20190265501
    Abstract: A laser pointer may include a laser light emitter that emits a laser beam, a housing accommodating the laser light emitter; a vibration detection sensor that detects a vibration produced in the housing, a shake correction mechanism that changes a direction of the laser beam emitted by the laser light emitter, and a controller that controls the direction of the laser beam, which is changed by the shake correction mechanism, into a direction so as to offset the vibration detected by the vibration detection sensor. The controller may be configured to calculate a frequency of the vibration; calculate a movement amount of the vibration; determine whether a vibration applied to the housing is caused by a hand-shake based on the frequency of the vibration and the movement amount of the vibration; and activate the shake correction mechanism in response to a determination that the vibration is caused by a hand-shake.
    Type: Application
    Filed: February 26, 2019
    Publication date: August 29, 2019
    Inventors: Takeshi SUE, Masato GOMYO, Ryoji KOMATSU
  • Patent number: 10356292
    Abstract: An optical unit with rolling correction function is provided and performs rolling correction by fixing a circuit board on which an imaging element is mounted and a heat dissipating member to a rotation member, transmitting heat from the circuit board to the heat dissipating member, and rotating the rotation member. A rotation shaft of a rotation supporting mechanism is fixed to the rotation member via the heat dissipating member. Accordingly, it is possible to dissipate heat by transmitting heat that is generated from the imaging element, from the circuit board to the heat dissipating member, and then transmitting the heat from the heat dissipating member to the rotation shaft. The imaging element and the heat dissipating member overlap with the rotation shaft at an identical position when the imaging element and the heat dissipating member are seen from an optical axis direction.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: July 16, 2019
    Assignee: NIDEC SANKYO CORPORATION
    Inventors: Shinji Minamisawa, Masato Gomyo, Takeshi Sue
  • Publication number: 20190018259
    Abstract: An optical unit with shake correction function capable of reducing a weight of a rotation member to be rotated in rolling correction. An optical unit with shake correction function includes: a movable member; a swing supporting mechanism supporting the movable member such that the movable member is able to swing; and a fixation member supporting the movable member via the swing supporting mechanism. The movable member includes: an imaging module; a rotation seat supporting the imaging module; a rotation supporting mechanism supporting the rotation seat such that the rotation seat is able to rotate on an optical axis of the imaging module; a supporting member supporting the rotation seat via the rotation supporting mechanism; and a rolling magnetic driving mechanism causing the rotation seat to rotate. The imaging module and the rotation seat configure the rotation member to be rotated by the rolling magnetic driving mechanism.
    Type: Application
    Filed: July 9, 2018
    Publication date: January 17, 2019
    Applicant: NIDEC SANKYO CORPORATION
    Inventors: Shinji MINAMISAWA, Takeshi SUE, Masato GOMYO
  • Publication number: 20190018258
    Abstract: To draw a flexible printed circuit board in a small space with high flexibility in an optical unit with shake correction function. In an optical unit with rolling correction function, a first flexible printed circuit board for an imaging element is drawn around an optical axis of the optical unit with rolling correction function such that the first flexible printed circuit board is wound by substantially a turn in a circumferential direction at an identical height in an optical axis direction. Furthermore, in a portion wound in the circumferential direction (i.e., a connection part), one end and the other end in the circumferential direction are at an identical height in the optical axis direction. Furthermore, a second flexible printed circuit board for a rolling magnetic driving mechanism and a third flexible printed circuit board for a swing magnetic driving mechanism are also drawn in a similar manner.
    Type: Application
    Filed: July 9, 2018
    Publication date: January 17, 2019
    Applicant: NIDEC SANKYO CORPORATION
    Inventors: Shinji MINAMISAWA, Masato GOMYO, Takeshi SUE
  • Publication number: 20190020799
    Abstract: An optical unit with rolling correction function is provided and performs rolling correction by fixing a circuit board on which an imaging element is mounted and a heat dissipating member to a rotation member, transmitting heat from the circuit board to the heat dissipating member, and rotating the rotation member. A rotation shaft of a rotation supporting mechanism is fixed to the rotation member via the heat dissipating member. Accordingly, it is possible to dissipate heat by transmitting heat that is generated from the imaging element, from the circuit board to the heat dissipating member, and then transmitting the heat from the heat dissipating member to the rotation shaft. The imaging element and the heat dissipating member overlap with the rotation shaft at an identical position when the imaging element and the heat dissipating member are seen from an optical axis direction.
    Type: Application
    Filed: July 3, 2018
    Publication date: January 17, 2019
    Applicant: NIDEC SANKYO CORPORATION
    Inventors: Shinji MINAMISAWA, Masato GOMYO, Takeshi SUE
  • Publication number: 20180321462
    Abstract: To provide a rolling magnetic driving unit that can be employed for both of an optical unit with shake correction function that causes an optical module to swing and rotate and an optical unit with shake correction function that causes the optical module to rotate, a second unit (i.e., a rolling magnetic driving unit) includes: a rotation seat; and a fixation member that supports the rotation seat via a bearing mechanism. The rotation seat and the bearing mechanism configure a rotation-supporting mechanism. The rotation-supporting mechanism supports a holder, which supports the optical module such that the optical module is able to swing, such the holder is able to rotate on the axis. Furthermore, the second unit includes a rolling magnetic driving mechanism, which includes a rolling driving coil that is held by the rotation seat and a rolling driving magnet that is held by the fixation member.
    Type: Application
    Filed: May 7, 2018
    Publication date: November 8, 2018
    Applicant: NIDEC SANKYO CORPORATION
    Inventors: Shinji MINAMISAWA, TAKESHI SUE, Masato GOMYO
  • Publication number: 20150137639
    Abstract: A motor may include a rotor having a magnet and a stator having a stator core and a coil. The stator core is provided with salient poles, including a predetermined salient pole, separately formed in the circumferential direction, the salient poles are protruded to an inner side and face the magnet through a gap space, and the predetermined salient pole is wound around with the coil through a coil bobbin. The stator core is provided with a connecting part which connects end parts of the salient poles. The coil bobbin is provided with a body part around which the coil is wound and an insertion hole formed in the body part and into which the predetermined salient pole is inserted. The coil bobbin and the stator core engage with the other to restrain displacement of the coil bobbin to the inner side.
    Type: Application
    Filed: November 13, 2014
    Publication date: May 21, 2015
    Inventors: Masato GOMYO, Zhan Wen CHEN
  • Publication number: 20140132103
    Abstract: A motor may include a rotor having a rotation shaft made of metal and a cylindrical permanent magnet fixed to the rotation shaft, and a stator facing a peripheral face of the permanent magnet and is electrically insulated from the rotation shaft. The peripheral face of the permanent magnet facing the stator and the rotation shaft are electrically connected with each other.
    Type: Application
    Filed: November 12, 2013
    Publication date: May 15, 2014
    Applicant: NIDEC SANKYO CORPORATION
    Inventors: Masato GOMYO, Yoshimi TAKASU
  • Publication number: 20130257204
    Abstract: A motor may include a rotor having a rotation shaft, a stator formed in a tube shape and disposed around the rotor, a bearing member rotatably supporting the rotor, and an end plate with a spring part urging the rotation shaft in the motor axial line direction and holding the bearing member between the stator and the end plate. The bearing member may include a plate-shaped part whose outer shape dimension is smaller than an inner shape dimension of the stator and at least a part of the plate-shaped part is located on an inner side of the stator and an engagement part protruded from the plate-shaped part to an outer side in a radial direction and is overlapped with an end face of the stator. The end plate may be overlapped with the plate-shaped part on an opposite side to the stator.
    Type: Application
    Filed: March 28, 2013
    Publication date: October 3, 2013
    Applicant: NIDEC SANKYO CORPORATION
    Inventors: Masato GOMYO, Ikuo AGEMATSU, Katsuhide YAJIMA
  • Patent number: 8164850
    Abstract: A fluid dynamic bearing device includes a sleeve having a bearing hole into which a shaft is inserted, the sleeve rotatably supporting the shaft to make relative rotation about a center axis and a bearing housing made of a cold-rolled steel plate or a galvanized steel plate, the sleeve being received within the bearing housing. The bearing housing is filled with lubricating oil mainly composed of ester. A radial dynamic pressure bearing portion is provided between an outer circumferential surface of the shaft and an inner circumferential surface of the sleeve, the radial dynamic pressure bearing portion having radial dynamic pressure grooves for holding the lubricating oil as working fluid and for inducing a fluid dynamic pressure in the lubricating oil during the relative rotation. At least a surface region of the bearing housing remaining in contact with the lubricating oil is coated with a layer mainly composed of nickel.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: April 24, 2012
    Assignee: Nidec Corporation
    Inventors: Masato Gomyo, Hisaya Nakagawa
  • Patent number: 8087156
    Abstract: In spindle motors journaled on fluid-dynamic-pressure bearings, especially in such spindle motors employed in recording-disk drives in implementations that subject the drives to vibration and shock, sealing performance of a capillary seal formed between motor rotor-side and stator-side bearing surfaces, cohesiveness of oil-repellant on rotor-side/stator-side dry-area surfaces adjoining the capillary seal section, and motor inter-component adhesive strength are improved. The capillary-seal-constituting rotor-side/stator-side surface(s) are exposed to a plasma or to ultraviolet rays under predetermined conditions to improve the wettability of the surface(s) for the bearing fluid. The dry-area surface(s) are similarly irradiated so as to improve their wettability for the oil-repellant. Adhesively bonded component surfaces are likewise irradiated so as to improve their wettability for the adhesive, enhancing adhesive strength.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: January 3, 2012
    Assignee: Nidec Corporation
    Inventors: Masato Gomyo, Takehito Tamaoka
  • Patent number: 8056210
    Abstract: A sleeve portion is inserted into a hole portion of a base bracket on which an adhesive of heat cure type is applied while a rotor portion and a stator portion are retained by a position determining jig. Then, the sleeve portion is initially affixed to the base bracket by a high frequency induction heating of an induction coil. Then, the initial affixation is cured completely in an oven. Since the adhesive of heat cure type is used, generation of outgass will be minimized and a manufacturing cost of the motor having such components will be reduced.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: November 15, 2011
    Assignee: Nidec Corporation
    Inventors: Masato Gomyo, Yoichi Sekii
  • Publication number: 20100085662
    Abstract: In spindle motors journaled on fluid-dynamic-pressure bearings, especially in such spindle motors employed in recording-disk drives in implementations that subject the drives to vibration and shock, sealing performance of a capillary seal formed between motor rotor-side and stator-side bearing surfaces, cohesiveness of oil-repellant on rotor-side/stator-side dry-area surfaces adjoining the capillary seal section, and motor inter-component adhesive strength are improved. The capillary-seal-constituting rotor-side/stator-side surface(s) are exposed to a plasma or to ultraviolet rays under predetermined conditions to improve the wettability of the surface(s) for the bearing fluid. The dry-area surface(s) are similarly irradiated so as to improve their wettability for the oil-repellant. Adhesively bonded component surfaces are likewise irradiated so as to improve their wettability for the adhesive, enhancing adhesive strength.
    Type: Application
    Filed: December 7, 2009
    Publication date: April 8, 2010
    Applicant: NIDEC CORPORATION
    Inventors: Masato Gomyo, Takehito Tamaoka
  • Patent number: 7650697
    Abstract: In spindle motors journaled on fluid-dynamic-pressure bearings, especially in such spindle motors employed in recording-disk drives in implementations that subject the drives to vibration and shock, sealing performance of a capillary seal formed between motor rotor-side and stator-side bearing surfaces, cohesiveness of oil-repellant on rotor-side/stator-side dry-area surfaces adjoining the capillary seal section, and motor inter-component adhesive strength are improved. The capillary-seal-constituting rotor-side/stator-side surface(s) are exposed to a plasma or to ultraviolet rays under predetermined conditions to improve the wettability of the surface(s) for the bearing fluid. The dry-area surface(s) are similarly irradiated so as to improve their wettability for the oil-repellant. Adhesively bonded component surfaces are likewise irradiated so as to improve their wettability for the adhesive, enhancing adhesive strength.
    Type: Grant
    Filed: May 2, 2005
    Date of Patent: January 26, 2010
    Assignee: Nidec Corporation
    Inventors: Masato Gomyo, Takehito Tamaoka
  • Publication number: 20090279816
    Abstract: In a fluid dynamic pressure bearing device using ionic liquid as lubricant, a shaft member and a sleeve member are not corroded by the ionic liquid and static electricity generated is not accumulated. Aluminum with an oxide film formed on its surface is used as the material of the shaft member 11 and the sleeve member 12 and aluminum exposure portions B1, B2 are provided on the surfaces making contact with the ionic liquid, other than dynamic pressure generating grooves, of the shaft member 11 and the sleeve member 12. Accordingly, the shaft member 11 and the sleeve member 12 are kept substantially in the same electric potential through the ionic liquid.
    Type: Application
    Filed: December 5, 2007
    Publication date: November 12, 2009
    Applicant: NIDEC CORPORATION
    Inventors: Masato Gomyo, Hironao Sasaki
  • Publication number: 20090196154
    Abstract: A method for manufacturing a bearing mechanism used in an electric motor includes (a) inserting an annular member into a substantially cylindrical closed-bottom cup member to bring a first end portion of a shaft fitted to the annular member into contact with a thermoplastic resin member arranged on an inner bottom surface of the cup member, bringing the annular member into contact with the shaft in a direction leading from an opening of the cup member to a bottom portion of the cup member, and fixing the annular member to the cup member; and (b) deforming the resin member by externally heating the bottom portion of the cup member and applying a load acting toward the bottom portion on a second end portion of the shaft. Further, an electric motor includes a rotor unit, a stator unit, and the bearing mechanism manufactured by this method.
    Type: Application
    Filed: January 27, 2009
    Publication date: August 6, 2009
    Applicant: NIDEC CORPORATION
    Inventor: Masato Gomyo