Patents by Inventor Fumio Kishida
Fumio Kishida 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: 11691667Abstract: A steering device includes two motors each configured to generate a drive force that steers a steerable wheel of a vehicle and two controllers respectively corresponding to the two motors, each of the two controllers being configured to individually control a corresponding one of the motors. One of the two controllers is a first controller, and the other one of the two controllers is a second controller. The first controller is configured to calculate a command value corresponding to a total torque that should be generated in the two motors. The command value is divided into individual command values using a changeable distribution ratio set for each of the motors, the individual command values respectively corresponding to the motors. The two controllers are configured to respectively supply the motors with current corresponding to the individual command values.Type: GrantFiled: August 19, 2020Date of Patent: July 4, 2023Assignee: JTEKT CORPORATIONInventors: Yoshio Kondo, Toshiaki Ogata, Fumio Kishida, Keishi Nakamura, Hirohide Suzuki
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Patent number: 11679801Abstract: A steering device includes a steering rod that includes two ball screw parts, the steering rod being configured to steer a steerable wheel by moving linearly, two ball nuts respectively fastened to the two ball screw parts, two motors each configured to generate a drive force, two transmission mechanisms each including a toothed belt, the two transmission mechanisms being configured to transmit the drive force of each one of the two motors to a corresponding one of the ball nuts, two detectors configured to respectively detect rotation angles of the two motors, and a controller configured to control each of the two motors. The controller is configured to detect tooth jumping of the belts using the rotation angles of the two motors that are detected by the two detectors.Type: GrantFiled: August 19, 2020Date of Patent: June 20, 2023Assignee: JTEKT CORPORATIONInventors: Yoshio Kondo, Toshiaki Ogata, Fumio Kishida, Keishi Nakamura, Hirohide Suzuki
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Patent number: 11639191Abstract: A turning apparatus includes tie rods, a wheel turning shaft, two motors, two ball screws, a transmission mechanism, and two controllers. The wheel turning shaft turns steered wheels of a vehicle. A first controller that is any one of the two controllers computes a current command value and allocates the current command value to the motors at a ratio that varies with a position of the wheel turning shaft in an axial direction. The two controllers each supply any one of the motors, which is an object to be controlled by a corresponding one of the controllers, with a current according to a corresponding of individual current command values.Type: GrantFiled: January 22, 2021Date of Patent: May 2, 2023Assignee: JTEKT CORPORATIONInventors: Toshiaki Ogata, Fumio Kishida, Yoshio Kondo, Keishi Nakamura
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Patent number: 11608106Abstract: A steering system includes a housing, a steering operation shaft that is housed in the housing and configured to move in an axial direction to steer right and left steered wheels, a first drive source that generates a first drive force, a second drive source that generates a second drive force, a first power transfer unit that applies an axial force to the steering operation shaft with the first drive source, a second power transfer unit that applies an axial force to the steering operation shaft with the second drive force, a position detection sensor that is provided in the housing and detects an axial position of the steering operation shaft, and a control device that controls the first drive source and the second drive source using a detection result of the position detection sensor.Type: GrantFiled: April 29, 2020Date of Patent: March 21, 2023Assignee: JTEKT CORPORATIONInventors: Keishi Nakamura, Yoshio Kondo, Toshiaki Ogata, Fumio Kishida
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Patent number: 11554807Abstract: A turning device includes a turning shaft having a first ball screw groove as one of a left screw and a right screw and a second ball screw groove as the other of the left screw and the right screw and turning wheels to be turned by moving in an axial direction, a first electric motor generating a first driving force, a second electric motor operating independently of the first electric motor and generating a second driving force, a first ball screw nut transmitting the first driving force generated by the first electric motor to the first ball screw groove, a second ball screw nut transmitting the second driving force generated by the second electric motor to the second ball screw groove, and a rotation regulating part regulating relative rotation of the turning shaft around an axis with respect to a housing.Type: GrantFiled: February 11, 2020Date of Patent: January 17, 2023Assignee: JTEKT CORPORATIONInventors: Yoshio Kondo, Fumio Kishida, Toshiaki Ogata, Keishi Nakamura, Hirohide Suzuki
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Publication number: 20210229736Abstract: A turning apparatus includes tie rods, a wheel turning shaft, two motors, two ball screws, a transmission mechanism, and two controllers. The wheel turning shaft turns steered wheels of a vehicle. A first controller that is any one of the two controllers computes a current command value and allocates the current command value to the motors at a ratio that varies with a position of the wheel turning shaft in an axial direction. The two controllers each supply any one of the motors, which is an object to be controlled by a corresponding one of the controllers, with a current according to a corresponding of individual current command values.Type: ApplicationFiled: January 22, 2021Publication date: July 29, 2021Applicant: JTEKT CORPORATIONInventors: Toshiaki OGATA, Fumio KISHIDA, Yoshio KONDO, Keishi NAKAMURA
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Publication number: 20210053615Abstract: A steering device includes two motors each configured to generate a drive force that steers a steerable wheel of a vehicle and two controllers respectively corresponding to the two motors, each of the two controllers being configured to individually control a corresponding one of the motors. One of the two controllers is a first controller, and the other one of the two controllers is a second controller. The first controller is configured to calculate a command value corresponding to a total torque that should be generated in the two motors. The command value is divided into individual command values using a changeable distribution ratio set for each of the motors, the individual command values respectively corresponding to the motors. The two controllers are configured to respectively supply the motors with current corresponding to the individual command values.Type: ApplicationFiled: August 19, 2020Publication date: February 25, 2021Applicant: JTEKT CORPORATIONInventors: Yoshio KONDO, Toshiaki OGATA, Fumio KISHIDA, Keishi NAKAMURA, Hirohide SUZUKI
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Publication number: 20210053612Abstract: A steering device includes a steering rod that includes two ball screw parts, the steering rod being configured to steer a steerable wheel by moving linearly, two ball nuts respectively fastened to the two ball screw parts, two motors each configured to generate a drive force, two transmission mechanisms each including a toothed belt, the two transmission mechanisms being configured to transmit the drive force of each one of the two motors to a corresponding one of the ball nuts, two detectors configured to respectively detect rotation angles of the two motors, and a controller configured to control each of the two motors. The controller is configured to detect tooth jumping of the belts using the rotation angles of the two motors that are detected by the two detectors.Type: ApplicationFiled: August 19, 2020Publication date: February 25, 2021Applicant: JTEKT CORPORATIONInventors: Yoshio KONDO, Toshiaki OGATA, Fumio KISHIDA, Keishi NAKAMURA, Hirohide SUZUKI
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Publication number: 20210043981Abstract: A battery module includes a cell stack in which a plurality of plate-shaped cells is stacked such that each main surface, which is a surface of each of the plate-shaped cells in a cell thickness direction, faces one another.Type: ApplicationFiled: March 30, 2018Publication date: February 11, 2021Applicant: Envision AESC Japan Ltd.Inventors: Manabu FUKUOKA, Masayuki NAKAI, Gen TAKAYAMA, Yuta MOTOHASHI, Fumio KISHIDA, Masahiro NAKAMOTO
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Publication number: 20200361523Abstract: A steering system includes a housing, a steering operation shaft that is housed in the housing and configured to move in an axial direction to steer right and left steered wheels, a first drive source that generates a first drive force, a second drive source that generates a second drive force, a first power transfer unit that applies an axial force to the steering operation shaft with the first drive source, a second power transfer unit that applies an axial force to the steering operation shaft with the second drive force, a position detection sensor that is provided in the housing and detects an axial position of the steering operation shaft, and a control device that controls the first drive source and the second drive source using a detection result of the position detection sensor.Type: ApplicationFiled: April 29, 2020Publication date: November 19, 2020Applicant: JTEKT CORPORATIONInventors: Keishi NAKAMURA, Yoshio KONDO, Toshiaki OGATA, Fumio KISHIDA
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Publication number: 20200324807Abstract: A steering device includes: a steered shaft; a first nut; a second nut; a first motor; a second motor; a first power transmission portion that transmits a first drive force generated by the first motor to the first nut, converts the first drive force into a force in an axial direction, and biases the steered shaft in the axial direction; a second power transmission portion that transmits a second drive force generated by the second motor to the second nut, converts the second drive force into a force in the axial direction, and biases the steered shaft in the axial direction; a signal detection device that detects a first detection signal and a second detection signal with different periods; and a computation device that computes an absolute position of the steered shaft in the axial direction.Type: ApplicationFiled: April 13, 2020Publication date: October 15, 2020Applicant: JTEKT CORPORATIONInventors: Yoshio KONDO, Fumio KISHIDA, Toshiaki OGATA, Keishi NAKAMURA, Hirohide SUZUKI
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Publication number: 20200262470Abstract: A turning device includes a turning shaft having a first ball screw groove as one of a left screw and a right screw and a second ball screw groove as the other of the left screw and the right screw and turning wheels to be turned by moving in an axial direction, a first electric motor generating a first driving force, a second electric motor operating independently of the first electric motor and generating a second driving force, a first ball screw nut transmitting the first driving force generated by the first electric motor to the first ball screw groove, a second ball screw nut transmitting the second driving force generated by the second electric motor to the second ball screw groove, and a rotation regulating part regulating relative rotation of the turning shaft around an axis with respect to a housing.Type: ApplicationFiled: February 11, 2020Publication date: August 20, 2020Applicant: JTEKT CORPORATIONInventors: Yoshio KONDO, Fumio KISHIDA, Toshiaki OGATA, Keishi NAKAMURA, Hirohide SUZUKI
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Patent number: 9656684Abstract: Elongated holes are formed in a first plate of a fixed bracket so as to extend parallel to a column moving direction. An elongated hole inserted portion of a suspending bolt of a suspending mechanism is disposed in an initial assembling position in one of the elongated holes. An inner circumference of the elongated hole includes a pair of flat surface portions which are parallel to the column moving direction, an arc-shaped surface portion and tapered surface portions which connect a pair of end portions of the arc-shaped surface portion to the corresponding flat surface portion. Tapered angles which the tapered surfaces form relative to the column moving direction are equal to or greater than a friction angle.Type: GrantFiled: June 25, 2014Date of Patent: May 23, 2017Assignees: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Eiji Tanaka, Fumio Kishida, Susumu Imagaki, Hiroshi Kawakami
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Publication number: 20160114828Abstract: Elongated holes are formed in a first plate of a fixed bracket so as to extend parallel to a column moving direction. An elongated hole inserted portion of a suspending bolt of a suspending mechanism is disposed in an initial assembling position in one of the elongated holes. An inner circumference of the elongated hole includes a pair of flat surface portions which are parallel to the column moving direction, an arc-shaped surface portion and tapered surface portions which connect a pair of end portions of the arc-shaped surface portion to the corresponding flat surface portion. Tapered angles which the tapered surfaces form relative to the column moving direction are equal to or greater than a friction angle.Type: ApplicationFiled: June 25, 2014Publication date: April 28, 2016Inventors: Eiji TANAKA, Fumio KISHIDA, Susumu IMAGAKI, Hiroshi KAWAKAMI
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Patent number: 5956465Abstract: For a combination of a first movable body adaptive for an automatic motion to provide an equivalent service to a required service, and a second movable body capable of exercising a voluntary motion and to cooperate with the first movable body to provide the voluntary motion as one of assistance and teaching to the first movable body to sophisticate the automatic motion, there are provided a first controller operative in a first mode for controlling the first moving body to exercise the automatic motion and in a second mode for adapting the first movable body to cooperate with the second movable body so that the automatic motion is sophisticated to be capable of achieving an equivalent service to the required service in a sophisticated manner, and a second controller for selecting one of the first and second modes.Type: GrantFiled: April 3, 1997Date of Patent: September 21, 1999Assignee: Nissan Motor Co., Ltd.Inventors: Yoshiyuki Takagi, Teruo Takeshita, Masayasu Ota, Fumio Kishida, Takamasa Nakamura, Hitoshi Sekiguchi
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Patent number: 5583750Abstract: In an electronic device comprising a first substrate having at least one first electronic circuit element thereon, a second substrate having at least one second electronic circuit element thereon, a substrate connector through which the first and second electronic circuit elements are connected electrically to each other, and an electrically grounded chassis receiving the first and second substrates, the first substrate has thereon a first electromagnetic shielding plate including an electrically conductive material, the second substrate has thereon a second electromagnetic shielding plate including the electrically conductive material, the first and second electromagnetic shielding plates are electrically connected to the chassis, and a wire length between a wire length limited electronic circuit element on the first substrate and another of the electronic circuit elements on the second substrate is limited for ensuring a high speed responsive operation therebetween.Type: GrantFiled: October 18, 1995Date of Patent: December 10, 1996Assignees: Hitachi, Ltd., Hitachi Microcomputer System, Ltd.Inventors: Kunihiro Nakata, Seiichi Kawashima, Fumio Kishida
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Patent number: D444148Type: GrantFiled: August 8, 2000Date of Patent: June 26, 2001Assignee: Hitachi, Ltd.Inventors: Sayuri Hashizume, Takashi Yamamoto, Takashi Ohwada, Toshiyuki Utsuki, Kenta Kumagai, Mitsuo Miyamoto, Fumio Kishida, Michihito Watarai
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Patent number: D361060Type: GrantFiled: July 26, 1994Date of Patent: August 8, 1995Assignee: Hitachi, Ltd.Inventors: Kennta Kumagaya, Yutaka Yonezawa, Jyun Furuya, Toshiyuki Utsuki, Takashi Yamamoto, Hiroshi Takahashi, Tamotsu Tsukaguchi, Shigeru Koizumi, Fumio Kishida
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Patent number: D371347Type: GrantFiled: July 18, 1995Date of Patent: July 2, 1996Assignee: Hitachi, Ltd.Inventors: Toshiyuki Utsuki, Takashi Yamamoto, Kenta Kumagai, Yutaka Yonezawa, Tadahiro Yamaguchi, Tamotsu Tsukaguchi, Shigeru Koizumi, Fumio Kishida
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Patent number: D389464Type: GrantFiled: December 13, 1996Date of Patent: January 20, 1998Assignee: Hitachi, Ltd.Inventors: Toshiyuki Utsuki, Takashi Yamamoto, Kenta Kumagai, Tohru Higashihara, Tamotsu Tsukaguchi, Mitsuharu Nagai, Fumio Kishida, Yoshito Hayashi