Patents by Inventor Yutaka Kamogi
Yutaka Kamogi 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).
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Patent number: 10432074Abstract: A vibrator unit capable of being attached to a housing of a vibration generator includes a vibrator including a magnet and a back yoke arranged on or above the magnet, and an elastic member. The elastic member includes a vibrator attachment part attached to the vibrator, a housing attachment part attached to the housing, and an arm part coupling the vibrator attachment part and the housing attachment part, said arm part displaceably supporting the vibrator attachment part at least in a horizontal direction with respect to the housing attachment part. The back yoke includes a planar part arranged on or above the magnet and a holding part bending the planar part toward the frame from the planar part. The vibrator attachment part is held and embraced by the holding part.Type: GrantFiled: October 4, 2016Date of Patent: October 1, 2019Assignee: MINEBEA CO., LTD.Inventors: Mikio Umehara, Yutaka Kamogi
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Patent number: 10396643Abstract: A motor includes a rotational shaft, a bearing supporting the rotational shaft, a magnet including plural magnetic poles in a circumferential direction, a rotor core disposed inside the magnet, and a magnetic sensor. The magnet includes a projection portion projecting toward a side of the bearing with respect to the rotor core in a direction of the rotational shaft. The magnetic sensor is positioned between the rotor core and the bearing in the direction of the rotational shaft and is positioned inside an inner peripheral surface of the projection portion.Type: GrantFiled: November 29, 2017Date of Patent: August 27, 2019Assignee: MINEBEA MITSUMI INC.Inventors: Tomohisa Suzuki, Yutaka Kamogi
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Patent number: 10396623Abstract: A motor includes: a motor shaft including a press-fitting surface; and a first annular projection group and a second annular projection group formed in the press-fitting surface of the motor shaft. The first annular projection group and the second annular projection group are separated from each other in an axial direction, a distance between an adjacent two of annular projections in the first annular projection group and a distance between an adjacent two of annular projections in the second annular projection group are smaller than a distance between the first annular projection group and the second annular projection group in the axial direction.Type: GrantFiled: October 24, 2018Date of Patent: August 27, 2019Assignee: Minebea Co., Ltd.Inventors: Makoto Otsuka, Yutaka Kamogi, Jun Ohmura
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Patent number: 10236749Abstract: A motor comprises a motor main body including a rotor and a stator around which a coil is wound, a drive circuit part including a circuit board to which a drive circuit including a power element is attached on mainly one face, a heat sink arranged on another face of the circuit board and to radiate heat of the drive circuit part, and a winding terminal to which at one side of the winding terminal an end portion of the coil of the motor main body is electrically connected. Another side of the winding terminal is partially electrically connected to the power element attached to the circuit board, and the winding terminal conducts heat generated by the power element from the one face to the other face of the circuit board.Type: GrantFiled: October 21, 2016Date of Patent: March 19, 2019Assignee: MINEBEA MITSUMI INC.Inventors: Yutaka Kamogi, Yasuhiro Ikehara
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Publication number: 20190058371Abstract: A motor includes: a motor shaft including a press-fitting surface; and a first annular projection group and a second annular projection group formed in the press-fitting surface of the motor shaft. The first annular projection group and the second annular projection group are separated from each other in an axial direction, a distance between an adjacent two of annular projections in the first annular projection group and a distance between an adjacent two of annular projections in the second annular projection group are smaller than a distance between the first annular projection group and the second annular projection group in the axial direction.Type: ApplicationFiled: October 24, 2018Publication date: February 21, 2019Inventors: Makoto OTSUKA, Yutaka KAMOGI, Jun OHMURA
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Patent number: 10141812Abstract: A motor shaft is configured to be press-fitted into a hole formed in a press-fitted component from a front end side in an axial direction. The motor shaft includes: a shaft body; a first annular projection portion that protrudes outwardly in a radial direction of the shaft body and is brought into contact with an inner circumferential surface of the hole the first annular projection portion being positioned at a first position; and a second annular projection portion that protrudes outwardly in the radial direction of the shaft body and is brought into contact with the inner circumferential surface of the hole, the second annular projection portion being positioned at a second position that is shifted from the first position toward a rear end side in the axial direction of the shaft body.Type: GrantFiled: January 12, 2016Date of Patent: November 27, 2018Assignee: Minebea Co., Ltd.Inventors: Makoto Otsuka, Yutaka Kamogi, Jun Ohmura
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Publication number: 20180152088Abstract: A motor includes a rotational shaft, a bearing supporting the rotational shaft, a magnet including plural magnetic poles in a circumferential direction, a rotor core disposed inside the magnet, and a magnetic sensor. The magnet includes a projection portion projecting toward a side of the bearing with respect to the rotor core in a direction of the rotational shaft. The magnetic sensor is positioned between the rotor core and the bearing in the direction of the rotational shaft and is positioned inside an inner peripheral surface of the projection portion.Type: ApplicationFiled: November 29, 2017Publication date: May 31, 2018Inventors: Tomohisa SUZUKI, Yutaka KAMOGI
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Publication number: 20180152090Abstract: In accordance with one aspect of the present disclosure, an electronic device includes a housing, a contact member attached to the housing, and a vibration generating device. The vibration generating device is fixed to the contact member or the housing. A gap is formed between a surface of the vibration generating device facing the housing and a surface of the housing facing the vibration generating device.Type: ApplicationFiled: November 27, 2017Publication date: May 31, 2018Inventors: Mikio UMEHARA, Yutaka KAMOGI
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Publication number: 20180152089Abstract: In accordance with one aspect of the present disclosure, a vibration generating device includes a protruding part; a base provided with the protruding part and formed of a magnetic body; an annular coil surrounding the protruding part; a plate facing the base and formed of a magnetic body; and an elastic member supporting the plate with respect to the base. The plate and the base constitute magnetic circuit.Type: ApplicationFiled: November 27, 2017Publication date: May 31, 2018Inventors: Mikio UMEHARA, Yutaka KAMOGI
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Publication number: 20180062478Abstract: A motor according to the present disclosure is a motor including a motor body part and a driving circuit part, the motor body part including: a rotor; a stator including a wound coil; a winding terminal electrically connected to the coil and extending toward the driving circuit part; and a frame housing the rotor and the stator, wherein the driving circuit part includes: a case including a first attaching portion and a frame portion with openings on both end sides of the frame portion; a first wiring board including a driving circuit and a power device mounted on the first wiring board, the first wiring board being fixed to the first attaching portion; and a first electric wiring member including a first stress absorbing portion formed into a shape absorbing stress, the first electric wiring member electrically connecting the winding terminal and the first wiring board.Type: ApplicationFiled: September 1, 2017Publication date: March 1, 2018Inventors: Yutaka KAMOGI, Yasuhiro IKEHARA
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Publication number: 20170117777Abstract: A motor comprises a motor main body including a rotor and a stator around which a coil is wound, a drive circuit part including a circuit board to which a drive circuit including a power element is attached on mainly one face, a heat sink arranged on another face of the circuit board and to radiate heat of the drive circuit part, and a winding terminal to which at one side of the winding terminal an end portion of the coil of the motor main body is electrically connected. Another side of the winding terminal is partially electrically connected to the power element attached to the circuit board, and the winding terminal conducts heat generated by the power element from the one face to the other face of the circuit board.Type: ApplicationFiled: October 21, 2016Publication date: April 27, 2017Applicant: MINEBEA CO., LTD.Inventors: Yutaka KAMOGI, Yasuhiro IKEHARA
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Publication number: 20170104401Abstract: A vibrator unit capable of being attached to a housing of a vibration generator includes a vibrator including a magnet and a back yoke arranged on or above the magnet, and an elastic member. The elastic member includes a vibrator attachment part attached to the vibrator, a housing attachment part attached to the housing, and an arm part coupling the vibrator attachment part and the housing attachment part, said arm part displaceably supporting the vibrator attachment part at least in a horizontal direction with respect to the housing attachment part. The back yoke includes a planar part arranged on or above the magnet and a holding part bending the planar part toward the frame from the planar part. The vibrator attachment part is held and embraced by the holding part.Type: ApplicationFiled: October 4, 2016Publication date: April 13, 2017Applicant: MINEBEA CO., LTD.Inventors: Mikio UMEHARA, Yutaka KAMOGI
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Patent number: 9525379Abstract: A control method for a vibration generator is provided. The vibration generator includes a fixed part around which a coil is wound, a movable part having a magnet, a bridge part movably supporting the movable part, and a power supply unit which applies an alternating current of a predetermined frequency to the coil. The power supply unit starts at the time of startup by the alternating current with a starting frequency which differs from a resonance frequency of the movable part, and the power supply unit changes the frequency of the applied alternating current to the resonance frequency of the movable part when the amount of vibration at the starting frequency reaches a predetermined ratio with respect to a saturation vibration amount of the resonance frequency.Type: GrantFiled: June 4, 2015Date of Patent: December 20, 2016Assignee: Minebea Co., Ltd.Inventors: Mikio Umehara, Yutaka Kamogi
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Publication number: 20160204671Abstract: A motor shaft is configured to be press-fitted into a hole formed in a press-fitted component from a front end side in an axial direction. The motor shaft includes: a shaft body; a first annular projection portion that protrudes outwardly in a radial direction of the shaft body and is brought into contact with an inner circumferential surface of the hole the first annular projection portion being positioned at a first position; and a second annular projection portion that protrudes outwardly in the radial direction of the shaft body and is brought into contact with the inner circumferential surface of the hole, the second annular projection portion being positioned at a second position that is shifted from the first position toward a rear end side in the axial direction of the shaft body.Type: ApplicationFiled: January 12, 2016Publication date: July 14, 2016Inventors: Makoto OTSUKA, Yutaka KAMOGI, Jun OHMURA
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Publication number: 20150357958Abstract: A control method for a vibration generator is provided. The vibration generator includes a fixed part around which a coil is wound, a movable part having a magnet, a bridge part movably supporting the movable part, and a power supply unit which applies an alternating current of a predetermined frequency to the coil. The power supply unit starts at the time of startup by the alternating current with a starting frequency which differs from a resonance frequency of the movable part, and the power supply unit changes the frequency of the applied alternating current to the resonance frequency of the movable part when the amount of vibration at the starting frequency reaches a predetermined ratio with respect to a saturation vibration amount of the resonance frequency.Type: ApplicationFiled: June 4, 2015Publication date: December 10, 2015Inventors: Mikio Umehara, Yutaka Kamogi
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Patent number: 8704417Abstract: A motor control unit includes two circuit boards accommodated in a board housing, and a connection holder placed on an outer face of the board housing. The connection holder includes external connection terminals and connection pins. Each one of the circuit boards is provided with multiple through-holes for receiving the connection pins, each of which is formed of an external connection pin and an internal connection pin. The connection holder and the circuit boards are placed such that the connection pins penetrate the through-holes of the circuit boards respectively.Type: GrantFiled: July 23, 2012Date of Patent: April 22, 2014Assignee: Panasonic CorporationInventor: Yutaka Kamogi
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Publication number: 20140028161Abstract: A motor control unit includes two circuit boards accommodated in a board housing, and a connection holder placed on an outer face of the board housing. The connection holder includes external connection terminals and connection pins. Each one of the circuit boards is provided with multiple through-holes for receiving the connection pins, each of which is formed of an external connection pin and an internal connection pin. The connection holder and the circuit boards are placed such that the connection pins penetrate the through-holes of the circuit boards respectively.Type: ApplicationFiled: July 23, 2012Publication date: January 30, 2014Applicant: PANASONIC CORPORATIONInventor: Yutaka Kamogi
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Patent number: 8411455Abstract: A mounting structure 1 in which an electronic component 5 is surface-mounted with solder 4 to a wiring substrate 2 is disclosed. The solder is Sn—Ag—Bi—In-based solder containing 0.1% by weight or more and 5% by weight or less of Bi, and more than 3% by weight and less than 9% by weight of In, with the balance being made up of Sn, Ag and unavoidable impurities. The wiring substrate has a coefficient of linear expansion of 13 ppm/K or less in all directions. Thus, it is possible to realize a mounting structure using lead-free solder and for which the occurrence of cracks in a solder joint portion due to a 1000-cycle thermal shock test from ?40 to 150° C. has been suppressed.Type: GrantFiled: February 22, 2010Date of Patent: April 2, 2013Assignee: Panasonic CorporationInventors: Kenji Kondo, Masahito Hidaka, Koji Kuyama, Yutaka Kamogi
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Patent number: 7944108Abstract: A motor for driving an actuator used such as for a throttle valve of an automobile engine and an optical axis controller of an automobile headlight. In two cup-shaped rotor yokes each provided with an internal diameter enlarged part at its opening, a ring-shaped joint material with an external diameter fitting into this internal diameter enlarged part is inserted into the internal diameter enlarged part to form a rotor yoke assembly. A motor is available with high durability against vibration and shock owing to high accuracy in dimensions, lightweight, and high rigidity of the rotor.Type: GrantFiled: July 10, 2007Date of Patent: May 17, 2011Assignee: Panasonic CorporationInventor: Yutaka Kamogi
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Publication number: 20110050051Abstract: A mounting structure 1 in which an electronic component 5 is surface-mounted with solder 4 to a wiring substrate 2 is disclosed. The solder is Sn—Ag—Bi—In-based solder containing 0.1% by weight or more and 5% by weight or less of Bi, and more than 3% by weight and less than 9% by weight of In, with the balance being made up of Sn, Ag and unavoidable impurities. The wiring substrate has a coefficient of linear expansion of 13 ppm/K or less in all directions. Thus, it is possible to realize a mounting structure using lead-free solder and for which the occurrence of cracks in a solder joint portion due to a 1000-cycle thermal shock test from ?40 to 150° C. has been suppressed.Type: ApplicationFiled: February 22, 2010Publication date: March 3, 2011Applicant: Panasonic CorporationInventors: Kenji Kondo, Masahito Hidaka, Koji Kuyama, Yutaka Kamogi