Patents by Inventor Masahide Nitano
Masahide Nitano 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: 11787465Abstract: A steering control apparatus is configured to control a steering system having a structure in which a power transmission path between a steering mechanism and a steering operation mechanism including a motor configured to generate a motor torque is separated. The steering control apparatus includes a controller configured to control driving of the motor. The controller detects an abnormality of the steering operation mechanism when a value indicating a variation in the motor torque is a value indicating a state in which a steering operation shaft is presumed to be immovable though the motor torque is applied.Type: GrantFiled: February 22, 2021Date of Patent: October 17, 2023Assignee: JTEKT CORPORATIONInventors: Koji Anraku, Isao Namikawa, Takuji Yoshida, Masahide Nitano
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Patent number: 11608110Abstract: A steering system to steer wheels by a movement of a steering shaft, including: the steering shaft; an electric motor; a converter configured to convert a rotational motion of the motor into the movement of the steering shaft; a motor rotation angle obtainer configured to obtain a motor rotation angle from a zero point position; a movement-amount-related-amount obtainer configured to obtain a movement-amount-related amount that is a movement amount of the steering shaft from a neutral position or a physical amount in a one-to-one correspondence with the movement amount; and a controller including a malfunction detector configured to detect a presence or absence of a malfunction of the converter in a mode that differs depending on a temperature state of the steering system, based on the motor rotation angle from the zero point position obtained by the motor rotation angle obtainer and the movement-amount-related amount obtained by the movement-amount-related-amount obtainer.Type: GrantFiled: September 8, 2021Date of Patent: March 21, 2023Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, JTEKT CorporationInventors: Takuji Yoshida, Masahide Nitano, Isao Namikawa, Koji Anraku
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Publication number: 20220081027Abstract: A steering system to steer wheels by a movement of a steering shaft, including: the steering shaft; an electric motor; a converter configured to convert a rotational motion of the motor into the movement of the steering shaft; a motor rotation angle obtainer configured to obtain a motor rotation angle from a zero point position; a movement-amount-related-amount obtainer configured to obtain a movement-amount-related amount that is a movement amount of the steering shaft from a neutral position or a physical amount in a one-to-one correspondence with the movement amount; and a controller including a malfunction detector configured to detect a presence or absence of a malfunction of the converter in a mode that differs depending on a temperature state of the steering system, based on the motor rotation angle from the zero point position obtained by the motor rotation angle obtainer and the movement-amount-related amount obtained by the movement-amount-related-amount obtainer.Type: ApplicationFiled: September 8, 2021Publication date: March 17, 2022Applicants: Toyota Jidosha Kabushiki Kaisha, Jtekt CorporationInventors: Takuji Yoshida, Masahide Nitano, Isao Namikawa, Koji Anraku
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Publication number: 20210269086Abstract: A steering control apparatus is configured to control a steering system having a structure in which a power transmission path between a steering mechanism and a steering operation mechanism including a motor configured to generate a motor torque is separated. The steering control apparatus includes a controller configured to control driving of the motor. The controller detects an abnormality of the steering operation mechanism when a value indicating a variation in the motor torque is a value indicating a state in which a steering operation shaft is presumed to be immovable though the motor torque is applied.Type: ApplicationFiled: February 22, 2021Publication date: September 2, 2021Applicant: JTEKT CORPORATIONInventors: Koji ANRAKU, Isao NAMIKAWA, Takuji YOSHIDA, Masahide NITANO
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Patent number: 9975574Abstract: In the damper device, when the large diameter portion does not apply an impact force on the flange portion, the elastic body is disposed in one of the housing and the cylindrical portion with a gap and when the large diameter portion applies the impact force on the flange portion, the elastic body is compressed by the restricting surface and the flange portion in an axial direction to be deformed into a state that the elastic body is brought into contact with all of the housing, the restricting surface, the cylindrical portion and the flange portion to be filled in the gap. The impact receiving member is restricted from a movement relative to the housing by the deformed elastic body when the end portion of the cylindrical portion is advanced into the relief portion and the impact receiving member keeps a non-contact state with the housing.Type: GrantFiled: October 21, 2016Date of Patent: May 22, 2018Assignees: JTEKT CORPORATION, NOK CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tatsuya Ohashi, Yuki Hanada, Masahide Nitano
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Patent number: 9744988Abstract: An electric power steering apparatus is configured to provide steering assistance as rotary torque of a driving toothed-pulley fixedly fitted to a rotary shaft of an electric motor is transmitted through a toothed belt to a driven toothed-pulley that rotates together with a ball screw nut in an integrated manner. The electric power steering apparatus is configured such that the amount of axial travel of a rack shaft is limited when a rack end and a housing come into contact with each other in the axial direction. The electric power steering apparatus includes a tilt allowing portion configured to cause the ball screw nut to tilt relative to a ball screw shaft such that the distance between the center of rotation of the driven toothed-pulley and that of the driving toothed-pulley increases when the rack end and the housing come into contact with each other in the axial direction.Type: GrantFiled: February 29, 2016Date of Patent: August 29, 2017Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, JTEKT CORPORATIONInventors: Masahide Nitano, Masafumi Takahashi, Kiyoshi Uchiyama, Masashi Yamaguchi
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Publication number: 20170113719Abstract: In the damper device, when the large diameter portion does not apply an impact force on the flange portion, the elastic body is disposed in one of the housing and the cylindrical portion with a gap and when the large diameter portion applies the impact force on the flange portion, the elastic body is compressed by the restricting surface and the flange portion in an axial direction to be deformed into a state that the elastic body is brought into contact with all of the housing, the restricting surface, the cylindrical portion and the flange portion to be filled in the gap. The impact receiving member is restricted from a movement relative to the housing by the deformed elastic body when the end portion of the cylindrical portion is advanced into the relief portion and the impact receiving member keeps a non-contact state with the housing.Type: ApplicationFiled: October 21, 2016Publication date: April 27, 2017Applicants: JTEKT CORPORATION, NOK CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tatsuya OHASHI, Yuki HANADA, Masahide NITANO
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Publication number: 20160257337Abstract: An electric power steering apparatus is configured to provide steering assistance as rotary torque of a driving toothed-pulley fixedly fitted to a rotary shaft of an electric motor is transmitted through a toothed belt to a driven toothed-pulley that rotates together with a ball screw nut in an integrated manner. The electric power steering apparatus is configured such that the amount of axial travel of a rack shaft is limited when a rack end and a housing come into contact with each other in the axial direction. The electric power steering apparatus includes a tilt allowing portion configured to cause the ball screw nut to tilt relative to a ball screw shaft such that the distance between the center of rotation of the driven toothed-pulley and that of the driving toothed-pulley increases when the rack end and the housing come into contact with each other in the axial direction.Type: ApplicationFiled: February 29, 2016Publication date: September 8, 2016Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, JTEKT CORPORATIONInventors: Masahide NITANO, Masafumi TAKAHASHI, Kiyoshi UCHIYAMA, Masashi YAMAGUCHI
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Patent number: 8216104Abstract: A first gear set includes an input member that serves as a first gear and an inner ring that serves as a second gear. A first end of the inner ring is inclined with respect to the input member and is in mesh with the input member. The input member has a plurality of retention grooves that are formed in an input member body and a plurality of pins that are retained in the respective retention grooves and that respectively constitute teeth of the input member. The first end has a plurality of tooth grooves that are engageable with the pins. A resultant force of forces applied to each pin from the retention groove and the tooth groove urges the pin toward the retention groove.Type: GrantFiled: January 6, 2010Date of Patent: July 10, 2012Assignees: JTEKT Corporation, Ogino Kogyo Co., Ltd.Inventors: Yoshikazu Kuroumaru, Masahide Nitano, Satoshi Motoyama, Makoto Yamasawa
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Publication number: 20100179012Abstract: A first gear set includes an input member that serves as a first gear and an inner ring that serves as a second gear. A first end of the inner ring is inclined with respect to the input member and is in mesh with the input member. The input member has a plurality of retention grooves that are formed in an input member body and a plurality of pins that are retained in the respective retention grooves and that respectively constitute teeth of the input member. The first end has a plurality of tooth grooves that are engageable with the pins. A resultant force of forces applied to each pin from the retention groove and the tooth groove urges the pin toward the retention groove.Type: ApplicationFiled: January 6, 2010Publication date: July 15, 2010Applicant: JTEKT CORPORATIONInventors: Yoshikazu KUROUMARU, Masahide NITANO, Satoshi MOTOYAMA