Patents by Inventor Kai MASAMOTO

Kai MASAMOTO 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: 20240019686
    Abstract: The present invention includes: a movable body including a magnet fixed to an other end portion side of a shaft part to which a movable object is connected at one end portion side; a core assembly including a core body including a plurality of magnetic poles facing an outer circumference of the magnet, a coil body wound around the core body, a magnet position holding portion energized to generate a magnetic attraction force between the magnet position holding portion and the magnet to define a reference position of the reciprocating rotation; and a circuit board disposed to cover the core assembly at the other end side, in which the coil body includes a terminal part to which an end portion of a coil is connected and that is disposed to protrude to the circuit board side so as to be connected to a circuit of the circuit board.
    Type: Application
    Filed: July 12, 2023
    Publication date: January 18, 2024
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Masaharu KAGAMI, Yasutaka KITAMURA, Yuki TAKAHASHI, Yuki OTSUKA, Kai MASAMOTO
  • Publication number: 20240019685
    Abstract: A rotary reciprocating drive actuator includes: a main body unit including: a movable body including a shaft part to which a movable object is connected and to which a magnet is fixed, and a base portion including a pair of wall portions disposed to sandwich the movable object, the base portion supporting the shaft part by the pair of wall portions; a core assembly including: a core body including a plurality of magnetic poles facing an outer circumference of the magnet, a coil body, and a magnet position holding portion; and a connecting surface portion that is integrally disposed on the one end portion side of the core assembly, and that is attached to the one wall portion in a state where the shaft part is inserted into an opening portion and the magnet is disposed in the core assembly.
    Type: Application
    Filed: July 12, 2023
    Publication date: January 18, 2024
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Masaharu KAGAMI, Yasutaka KITAMURA, Yuki TAKAHASHI, Yuki OTSUKA, Kai MASAMOTO
  • Publication number: 20240022153
    Abstract: A rotary reciprocating drive actuator includes: a movable body including a shaft part to which a movable object is connected at one end portion side of the shaft part, and a magnet fixed to an other end portion side of the shaft part, the movable body being supported to be capable of performing a reciprocating rotation about an axis; a core assembly including a magnet position holding portion defining a reference position of the reciprocating rotation; and a sensor board on which a sensor for detecting a rotational angle of the shaft part is mounted, the sensor board being disposed to cover the core assembly from the other end portion side, with the sensor facing the magnet side.
    Type: Application
    Filed: June 29, 2023
    Publication date: January 18, 2024
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Yuki TAKAHASHI, Yasutaka KITAMURA, Masaharu KAGAMI, Yuki OTSUKA, Kai MASAMOTO
  • Publication number: 20240022154
    Abstract: A rotary reciprocating drive actuator includes: a movable body including a shaft part to which a movable object is connected, and a magnet; a base portion including a pair of wall portions disposed to sandwich the movable object and support the shaft part; a core assembly including a core body including a plurality of magnetic poles, a coil body, and a magnet position holding portion to define a reference position of the reciprocating rotation, the core assembly being attached to one wall portion; and a sensor board that is attached to an other wall portion and on which a sensor configured to detect a rotational angle of the one end portion of the shaft part is mounted, in which the sensor board is disposed such that the sensor faces the other wall portion from an outer surface side of the other wall portion and detects the rotational angle.
    Type: Application
    Filed: July 13, 2023
    Publication date: January 18, 2024
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Yuki TAKAHASHI, Yasutaka KITAMURA, Masaharu KAGAMI, Yuki OTSUKA, Kai MASAMOTO
  • Publication number: 20240019683
    Abstract: A rotary reciprocating drive actuator includes: a movable body including a shaft part to which a magnet is fixed and being capable of performing a reciprocating rotation around an axis; a base portion including a pair of wall portions for supporting the shaft part via a bearing such that the shaft part is rotatable; a core assembly including: a core body having a plurality of magnetic poles facing an outer circumference of the magnet to sandwich the magnet, a coil body wound around the core body and energized to cause a reciprocating rotation of the movable body, and a magnet position holding portion generating a magnetic attraction force between the magnet position holding portion and the magnet to define a reference position of the reciprocating rotation; and a preload applying part externally fitted to the shaft part and configured to apply a preload to the bearing.
    Type: Application
    Filed: June 29, 2023
    Publication date: January 18, 2024
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Yuki OTSUKA, Yasutaka KITAMURA, Masaharu KAGAMI, Yuki TAKAHASHI, Kai MASAMOTO
  • Publication number: 20240019684
    Abstract: A rotary reciprocating drive actuator includes: a movable body including a shaft part to which a magnet is fixed, the movable body being configured to perform a reciprocating rotation about an axis; a base portion including a pair of wall portions for supporting the shaft part via a bearing; and a core assembly including: a core body including a plurality of magnetic poles facing the magnet, a coil body, and a magnet position holding portion to define a reference position of the reciprocating rotation, the core assembly being fixed to one wall portion, in which at least one of the base portion, the core body, or the core assembly includes a positioning fixation part for positioning and fixing the at least one of the base portion, the core body, or the core assembly to a fixation target object in a direction parallel to the shaft part.
    Type: Application
    Filed: July 12, 2023
    Publication date: January 18, 2024
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Kai MASAMOTO, Yuki TAKAHASHI, Yasutaka KITAMURA, Masaharu KAGAMI, Yuki OTSUKA
  • Publication number: 20230096114
    Abstract: A rotary reciprocating drive actuator includes: a movable body including a magnet fixed to a shaft portion; a fixing body including a plurality of magnetic poles, a first magnetic attraction member, and a second magnetic attraction member that are disposed to face an outer circumference of the magnet;, the plurality of magnetic poles including a plurality of coils, the first magnetic attraction member being configured to generate a first magnetic attraction force, the second magnetic attraction member being configured to generate a second magnetic attraction force, in which a magnetic flux passing through the plurality of magnetic poles is generated by energization of the plurality of coils, causing the reciprocating rotation of the movable body about an axis of the shaft portion with reference to the rotational center position by electromagnetic interaction between the magnetic flux and the magnet.
    Type: Application
    Filed: September 13, 2022
    Publication date: March 30, 2023
    Applicant: Mitsumi Electric Co., Ltd.
    Inventors: Yasutaka KITAMURA, Yuki TAKAHASHI, Masaharu KAGAMI, Kai MASAMOTO
  • Publication number: 20230025894
    Abstract: A rotary reciprocating drive actuator includes: a movable body including a shaft portion and a magnet fixed to the shaft portion; a fixing body including a core assembly, the core assembly including a core body and coils, the core body having magnetic poles, the core assembly being disposed such that the magnetic poles face an outer periphery of the magnet; and a pair of shaft supports configured to sandwich the core assembly in an extending direction of extension of the shaft portion and support the shaft portion at opposite sides of the core assembly such that the shaft portion is rotatable, in which a magnetic flux passing through the core body is generated by energization of the coils, causing reciprocating rotation of the movable body about an axis of the shaft portion by electromagnetic interaction between the magnetic flux and the magnet.
    Type: Application
    Filed: July 19, 2022
    Publication date: January 26, 2023
    Applicant: Mitsumi Electric Co., Ltd.
    Inventors: Yuki TAKAHASHI, Yasutaka KITAMURA, Masaharu KAGAMI, Kai MASAMOTO
  • Patent number: 11402951
    Abstract: An input device includes: an inputter to which an operation is input by a user; a frame that holds the inputter and moves in a first direction in response to the operation input by the user; a substrate disposed on a side to which the frame moves in the first direction; a first elastic body disposed between the frame and the substrate; a load sensor that detects a load applied to the inputter, based on the movement of the frame in the first direction; a restrictor that restricts the movement of the frame in a second direction that is opposite to the first direction; and a second elastic body disposed between the restrictor and the movable portion. The second elastic body has a repulsion elasticity lower than a repulsion elasticity of the first elastic body.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: August 2, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hideaki Eto, Takeshi Masutani, Kai Masamoto
  • Publication number: 20210157425
    Abstract: An input device includes: an inputter to which an operation is input by a user; a frame that holds the inputter and moves in a first direction in response to the operation input by the user; a substrate disposed on a side to which the frame moves in the first direction; a first elastic body disposed between the frame and the substrate; a load sensor that detects a load applied to the inputter, based on the movement of the frame in the first direction; a restrictor that restricts the movement of the frame in a second direction that is opposite to the first direction; and a second elastic body disposed between the restrictor and the movable portion. The second elastic body has a repulsion elasticity lower than a repulsion elasticity of the first elastic body.
    Type: Application
    Filed: November 18, 2020
    Publication date: May 27, 2021
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hideaki ETO, Takeshi MASUTANI, Kai MASAMOTO
  • Patent number: 11016570
    Abstract: An input device includes a movable section having a touch sensor, and an actuator that is mechanically fixed to the touch sensor and vibrates in a lateral direction; a support that supports the movable section via an elastic component; and a pressure sensor that (i) is disposed on a side opposite to a side on which the support supports the movable section and (ii) detects a pressing operation to the touch sensor. At least one of the movable section and the support transmits a force from the pressing operation to the pressure sensor due to the movable section and the support moving integrally and as a whole in a direction of the pressing operation when the pressing operation is performed.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: May 25, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hiroyuki Togawa, Sho Sonoda, Kai Masamoto
  • Patent number: 10768705
    Abstract: A main body includes an input component that receives a load. A pressure-sensitive sensor detects the load received by the input component. A drive unit performs a predetermined operation. A drive controller activates the drive unit when the load detected by the pressure-sensitive sensor reaches a predetermined load threshold. A detection controller changes the predetermined load threshold in accordance with the rate of change in the load detected by the pressure-sensitive sensor.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: September 8, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kai Masamoto, Hiroyuki Togawa, Sho Sonoda, Shogo Maenaka, Masaki Kitahashi
  • Publication number: 20190391656
    Abstract: An input device includes a movable section having a touch sensor, and an actuator that is mechanically fixed to the touch sensor and vibrates in a lateral direction; a support that supports the movable section via an elastic component; and a pressure sensor that (i) is disposed on a side opposite to a side on which the support supports the movable section and (ii) detects a pressing operation to the touch sensor. At least one of the movable section and the support transmits a force from the pressing operation to the pressure sensor due to the movable section and the support moving integrally and as a whole in a direction of the pressing operation when the pressing operation is performed.
    Type: Application
    Filed: September 5, 2019
    Publication date: December 26, 2019
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hiroyuki TOGAWA, Sho SONODA, Kai MASAMOTO
  • Publication number: 20190227630
    Abstract: A main body includes an input component that receives a load. A pressure-sensitive sensor detects the load received by the input component. A drive unit performs a predetermined operation. A drive controller activates the drive unit when the load detected by the pressure-sensitive sensor reaches a predetermined load threshold. A detection controller changes the predetermined load threshold in accordance with the rate of change in the load detected by the pressure-sensitive sensor.
    Type: Application
    Filed: January 16, 2019
    Publication date: July 25, 2019
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LT D.
    Inventors: Kai MASAMOTO, Hiroyuki TOGAWA, Sho SONODA, Shogo MAENAKA, Masaki KITAHASHI