Patents by Inventor Takuma Ono
Takuma Ono 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: 11524881Abstract: An industrial vehicle remote operation system includes a forklift truck that includes a vehicle communication unit, a remote operation device that includes a remote communication unit performing wireless communication with the vehicle communication unit and is used for remotely operating the industrial vehicle, and a forced stop control unit configured to decelerate and forcibly stop traveling of the industrial vehicle while maintaining a steering angle of the industrial vehicle formed when a forced stop condition is met, in a case where the forced stop condition is met during a remote operation of traveling of the industrial vehicle using the remote operation device.Type: GrantFiled: October 12, 2018Date of Patent: December 13, 2022Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Hironobu Okamoto, Takuma Ono, Koji Hika
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Publication number: 20220359112Abstract: There is provided a solenoid device in which a fixed wall and a supporting wall having a protruding portion are provided in a flange portion of a bobbin, in which a surge absorption device is held in a space between the supporting wall and the fixed wall, and in which the protruding portion presses the surge absorption device; furthermore, a starter having the solenoid device is provided.Type: ApplicationFiled: October 30, 2019Publication date: November 10, 2022Applicant: Mitsubishi Electric CorporationInventors: Takuma ONO, Koichiro KAMEI
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Patent number: 11450497Abstract: Provide an electromagnetic switch device for a starter, by which a winding fluctuation of a plurality of coils, of which wire diameters are different from each other, is prevented, which can be downsized and can be produced with a low cost. A bobbin, at which winding portions are separated by using a first flange portion which includes a first notch portion, second notch portions, and third notch portions, by which coils are led out, and a first separation wall and a second separation wall, which include the second notch portions and the third notch portions, by which coils are led out, is included, and a main aspiration holding coil, a sub-aspiration holding coil, and a resistance coil, of which wire diameters are different from each other, which are respectively wound around a first winding portion, a second winding portion, and a third winding portion, which are separated, are provided.Type: GrantFiled: November 21, 2017Date of Patent: September 20, 2022Assignee: Mitsubishi Electric CorporationInventors: Takuma Ono, Mitsuyasu Okamoto
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Patent number: 11309794Abstract: There is provided a switching power supply device which has a high voltage control resolution. A switching power supply device according to the present invention includes: a power conversion circuit which includes a switching element; and a control circuit unit which outputs a driving pulse to the switching element based on an output voltage command value and an output voltage value of the power conversion circuit, and the control circuit unit changes a switching cycle and outputs a driving pulse based on a difference between a calculation value of an operation amount based on the output voltage command value and the output voltage value, and a setting value of the operation amount.Type: GrantFiled: April 12, 2018Date of Patent: April 19, 2022Assignee: Hitachi Astemo, Ltd.Inventors: Naoya Takahashi, Kenji Kubo, Takuma Ono
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Publication number: 20210407753Abstract: An electromagnetic switch device includes: a fixed iron core; a plunger configured to move between a contact position and a separation position; a suction coil configured to generate, with a current supplied thereto, a magnetic field configured to move the plunger from the separation position toward the contact position; and a holding coil configured to generating, with a current supplied, a magnetic field configured to move the plunger from the separation position toward the contact position and a magnetic field configured to keep the plunger in the contact position. The holding coil is arranged in such a manner as to deviate, in a moving direction of the plunger, with respect to a contact surface of the fixed iron core.Type: ApplicationFiled: November 9, 2018Publication date: December 30, 2021Applicant: Mitsubishi Electric CorporationInventors: Takuma ONO, Koichiro KAMEI
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Patent number: 11174828Abstract: This bobbin includes: a cylindrical winding portion, a first partition portion and a second partition portion, wherein the first partition portion has lead-in cutout portions through which the coil wire to be wound on the upper side and the coil wire to be wound on the lower side are to be respectively introduced, and lead-out cutout portions through which the coil wire to be wound on the upper side and the coil wire to be wound on the lower side are to be respectively led out, and the first partition portion has, on a winding portion side thereof, a step formed in a zone including a range between the lead-out cutout portion for the coil wire to be wound on the lower side and the lead-in cutout portion for the coil wire to be wound on the upper side.Type: GrantFiled: April 29, 2019Date of Patent: November 16, 2021Assignee: Mitsubishi Electric CorporationInventors: Takuma Ono, Mitsuyasu Okamoto
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Patent number: 11050353Abstract: A power conversion device capable of suppressing current backflow while also improving current responsiveness and power conversion efficiency is achieved. A snubber capacitor capable of absorbing switching surge is connected to a low-voltage side switching circuit that includes switching elements. Until a predetermined time elapses from when a request to start switching is received, a controller determines that the snubber capacitor has not reached full charge or near-full charge, and asynchronously controls the low-voltage side switching circuit and a high-voltage side switching circuit that includes switching elements.Type: GrantFiled: April 11, 2018Date of Patent: June 29, 2021Assignee: Hitachi Automotive Systems, Ltd.Inventors: Sho Yaegaki, Kenji Kubo, Takuma Ono, Yuki Yamabe
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Patent number: 10954909Abstract: A movable iron core, a primary attracting and holding coil, a resistor electrically connected to an upstream start-up electric contact, and an auxiliary attracting and holding coil electrically connected to the upstream start-up electric contact are included. The movable iron core displaces a pinion from a separated position to a contact position. After the pinion is displaced from the separated position to the contact position, the upstream start-up electric contact is electrically disconnected from another start-up electric contact to cut off a current to the motor, and the movable iron core displaces the pinion from the contact position to an engaged position with the magnetomotive force of the primary attracting and holding coil and a magnetomotive force of the auxiliary attracting and holding coil. After the pinion is displaced from the contact position to the engaged position, main electric contacts are electrically connected to resume electric connection to the motor.Type: GrantFiled: October 5, 2016Date of Patent: March 23, 2021Assignee: Mitsubishi Electric CorporationInventors: Takuma Ono, Yoshihiro Morimoto, Tasuku Ito
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Publication number: 20210083588Abstract: A power conversion device capable of suppressing current backflow while also improving current responsiveness and power conversion efficiency is achieved. A snubber capacitor capable of absorbing switching surge is connected to a low-voltage side switching circuit that includes switching elements. Until a predetermined time elapses from when a request to start switching is received, a controller determines that the snubber capacitor has not reached full charge or near-full charge, and asynchronously controls the low-voltage side switching circuit and a high-voltage side switching circuit that includes switching elements.Type: ApplicationFiled: April 11, 2018Publication date: March 18, 2021Inventors: Sho YAEGAKI, Kenji KUBO, Takuma ONO, Yuki YAMABE
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Patent number: 10890154Abstract: The electromagnetic switch device for a starter includes: an A connector which forms a starting circuit, which is connected to a starting resistor, and which has an end at which one of a pair of starting circuit contacts is located; a B connector which forms the starting circuit, which is connected to one of a pair of main fixed contacts, and which has an end at which the other of the pair of starting circuit contacts is located; an insulating member electrically insulating the A connector and the B connector from a main fixed core; and an elastic member sealing a contact chamber, wherein the A connector and the B connector are held between a terminal block and the main fixed core with the insulating member and the elastic member interposed therebetween.Type: GrantFiled: April 26, 2016Date of Patent: January 12, 2021Assignee: Mitsubishi Electric CorporationInventors: Yoshihiro Morimoto, Takuma Ono
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Publication number: 20200312596Abstract: Provide an electromagnetic switch device for a starter, by which a winding fluctuation of a plurality of coils, of which wire diameters are different from each other, is prevented, which can be downsized and can be produced with a low cost. A bobbin, at which winding portions are separated by using a first flange portion which includes a first notch portion, second notch portions, and third notch portions, by which coils are led out, and a first separation wall and a second separation wall, which include the second notch portions and the third notch portions, by which coils are led out, is included, and a main aspiration holding coil, a sub-aspiration holding coil, and a resistance coil, of which wire diameters are different from each other, which are respectively wound around a first winding portion, a second winding portion, and a third winding portion, which are separated, are provided.Type: ApplicationFiled: November 21, 2017Publication date: October 1, 2020Applicant: Mitsubishi Electric CorporationInventors: Takuma ONO, Mitsuyasu OKAMOTO
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Publication number: 20200247652Abstract: An industrial vehicle remote operation system includes a forklift truck that includes a vehicle communication unit, a remote operation device that includes a remote communication unit performing wireless communication with the vehicle communication unit and is used for remotely operating the industrial vehicle, and a forced stop control unit configured to decelerate and forcibly stop traveling of the industrial vehicle while maintaining a steering angle of the industrial vehicle formed when a forced stop condition is met, in a case where the forced stop condition is met during a remote operation of traveling of the industrial vehicle using the remote operation device.Type: ApplicationFiled: October 12, 2018Publication date: August 6, 2020Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Hironobu OKAMOTO, Takuma ONO, Koji HIKA
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Publication number: 20200186032Abstract: There is provided a switching power supply device which has a high voltage control resolution. A switching power supply device according to the present invention includes: a power conversion circuit which includes a switching element; and a control circuit unit which outputs a driving pulse to the switching element based on an output voltage command value and an output voltage value of the power conversion circuit, and the control circuit unit changes a switching cycle and outputs a driving pulse based on a difference between a calculation value of an operation amount based on the output voltage command value and the output voltage value, and a setting value of the operation amount.Type: ApplicationFiled: April 12, 2018Publication date: June 11, 2020Inventors: Naoya TAKAHASHI, Kenji KUBO, Takuma ONO
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Publication number: 20200182214Abstract: This bobbin includes: a cylindrical winding portion, a first partition portion and a second partition portion, wherein the first partition portion has lead-in cutout portions through which the coil wire to be wound on the upper side and the coil wire to be wound on the lower side are to be respectively introduced, and lead-out cutout portions through which the coil wire to be wound on the upper side and the coil wire to be wound on the lower side are to be respectively led out, and the first partition portion has, on a winding portion side thereof, a step formed in a zone including a range between the lead-out cutout portion for the coil wire to be wound on the lower side and the lead-in cutout portion for the coil wire to be wound on the upper side.Type: ApplicationFiled: April 29, 2019Publication date: June 11, 2020Applicant: Mitsubishi Electric CorporationInventors: Takuma ONO, Mitsuyasu OKAMOTO
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Patent number: 10641229Abstract: An electromagnetic switch device for a starter includes: a terminal block in which a main contact chamber that is open at an attraction coil side in an axial direction and in which a pair of main fixed contacts and a main movable contact are located, and an auxiliary relay that is open at a side opposite to the attraction coil side in the axial direction, are located; a cover provided at an opening side of the terminal block at which the auxiliary relay is located, the cover having through holes through which main fixed contacts penetrate in a state where the auxiliary relay is sealed; and an elastic member which is located between the auxiliary relay and the cover and which fixes the auxiliary relay in the axial direction together with the terminal block and the cover.Type: GrantFiled: April 27, 2016Date of Patent: May 5, 2020Assignee: Mitsubishi Electric CorporationInventor: Takuma Ono
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Publication number: 20190219017Abstract: A movable iron core, a primary attracting and holding coil, a resistor electrically connected to an upstream start-up electric contact, and an auxiliary attracting and holding coil electrically connected to the upstream start-up electric contact are included. The movable iron core displaces a pinion from a separated position to a contact position. After the pinion is displaced from the separated position to the contact position, the upstream start-up electric contact is electrically disconnected from another start-up electric contact to cut off a current to the motor, and the movable iron core displaces the pinion from the contact position to an engaged position with the magnetomotive force of the primary attracting and holding coil and a magnetomotive force of the auxiliary attracting and holding coil. After the pinion is displaced from the contact position to the engaged position, main electric contacts are electrically connected to resume electric connection to the motor.Type: ApplicationFiled: October 5, 2016Publication date: July 18, 2019Applicant: Mitsubishi Electric CorporationInventors: Takuma ONO, Yoshihiro MORIMOTO, Tasuku ITO
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Publication number: 20190048840Abstract: An electromagnetic switch device for a starter includes: a terminal block in which a main contact chamber that is open at an attraction coil side in an axial direction and in which a pair of main fixed contacts and a main movable contact are located, and an auxiliary relay that is open at a side opposite to the attraction coil side in the axial direction, are located; a cover provided at an opening side of the terminal block at which the auxiliary relay is located, the cover having through holes through which main fixed contacts penetrate in a state where the auxiliary relay is sealed; and an elastic member which is located between the auxiliary relay and the cover and which fixes the auxiliary relay in the axial direction together with the terminal block and the cover.Type: ApplicationFiled: April 27, 2016Publication date: February 14, 2019Applicant: Mitsubishi Electric CorporationInventor: Takuma ONO
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Publication number: 20190017485Abstract: The electromagnetic switch device for a starter includes: an A connector which forms a starting circuit, which is connected to a starting resistor, and which has an end at which one of a pair of starting circuit contacts is located; a B connector which forms the starting circuit, which is connected to one of a pair of main fixed contacts, and which has an end at which the other of the pair of starting circuit contacts is located; an insulating member electrically insulating the A connector and the B connector from a main fixed core; and an elastic member sealing a contact chamber, wherein the A connector and the B connector are held between a terminal block and the main fixed core with the insulating member and the elastic member interposed therebetween.Type: ApplicationFiled: April 26, 2016Publication date: January 17, 2019Applicant: Mitsubishi Electric CorporationInventors: Yoshihiro MORIMOTO, Takuma ONO
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Patent number: 9806535Abstract: A power-receiving device includes a secondary-side coil which can receive a first alternating current power without contact from a power-sending device having a primary side coil into which first alternating current power is input. The power-receiving device comprises a first power transmission path, a second power transmission path, a common path positioned in common with the first and second power transmission paths, and a voltage regulator arranged on the common path. The voltage regulator rectifies the first alternating current power received by the secondary coil or the second alternating current power from a connecting portion, converts the rectified power to a predetermined specific voltage value, and outputs the power.Type: GrantFiled: July 4, 2013Date of Patent: October 31, 2017Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Yutaka Nakashima, Tsuyoshi Koike, Yuichi Taguchi, Hiroki Togano, Keisuke Matsukura, Takuma Ono
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Patent number: 9634636Abstract: A non-contact power transmission device equipped with a ground-side device and a vehicle-side device. The ground-side device has a primary-side coil to which alternating-current power is input. The vehicle-side device includes a secondary-side coil, a battery, a secondary-side matching device, and a charging device. The secondary-side coil receives alternating-current power from the primary-side coil in a non-contact manner. The secondary-side matching device is provided between the secondary-side coil and the battery, and has a predetermined fixed inductance and fixed capacitance. The charging device has a switching element that performs a switching operation with a prescribed cycle. The charging device adjusts the duty ratio of the switching operation in accordance with the impedance of a load.Type: GrantFiled: June 24, 2013Date of Patent: April 25, 2017Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Tsuyoshi Koike, Tadashi Kondo, Hiroshi Katsunaga, Yuichi Taguchi, Hiroki Togano, Keisuke Matsukura, Keisuke Inoue, Yuki Tsunekawa, Takuma Ono