Patents by Inventor Yoshiki OKADA
Yoshiki OKADA 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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Publication number: 20240092133Abstract: The present invention provides a mobile robot that can simultaneously absorb an impact received from an uneven road surface while moving and estimate the position or orientation of the mobile robot while functioning. The mobile robot according to the present invention has an operation mechanism having a multi-jointed arm, and a movement mechanism that causes the operation mechanism to move, the mobile robot being characterized in that: the movement mechanism has a first support part and a second support part, which support the weight of the movement mechanism; and the second support part is installed at a position that is nearer to an outer peripheral section, in terms of the movement direction of the movement mechanism, than is the installation position of the first support part.Type: ApplicationFiled: February 18, 2021Publication date: March 21, 2024Inventors: Toshifumi MITSUYAMA, Yoshiki KANAI, Toru SHIBATA, Yuuko OKADA, Hiroki TAKAHASHI, Tomohiro INOUE
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Patent number: 11489385Abstract: A rotor includes: a plurality of permanent magnets divided at regular intervals in a circumferential direction around a shaft, and provided in an axial direction; a first protection ring for positioning and holding ends in the axial direction of the permanent magnets; a second protection ring for positioning and holding other ends in the axial direction of the permanent magnets; and a protection cover covering outer circumferential surfaces of the permanent magnets, the first protection ring, and the second protection ring, and having a uniform thickness in a radial direction.Type: GrantFiled: April 6, 2018Date of Patent: November 1, 2022Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Hiroki Murakami, Yoshiki Okada, Yoshiharu Takashima
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Patent number: 10734856Abstract: In a rotary electric machine, a conductive member surrounds a shaft and a plurality of permanent magnets provided on an outer peripheral portion of the shaft as a whole, and a holding member surrounds the shaft, the plurality of permanent magnets, and the conductive member as a whole. A conductivity of the conductive member is higher than a conductivity of the permanent magnet. The conductive member includes first and second opposing portions that oppose each other via a gap in a circumferential direction. An inter-opposing portion region existing between the first and second opposing portions is positioned within a circumferential direction range of an inter-magnet region existing between permanent magnets that are adjacent to each other in the circumferential direction.Type: GrantFiled: July 29, 2016Date of Patent: August 4, 2020Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Takahiro Mizuta, Moriyuki Hazeyama, Kazumasa Ito, Shinichi Yamaguchi, Masatsugu Nakano, Yoshiharu Takashima, Yoshiki Okada, Masafumi Ogawa
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Patent number: 10651698Abstract: A rotor includes a tubular sleeve member, a plurality of permanent magnets aligned in a peripheral direction on an outer peripheral surface of the sleeve member, and a tubular reinforcing member covering an outer peripheral surface of the permanent magnets. The sleeve member includes first and second end portions, which are spaced apart from each other in an axial direction, and an inner peripheral surface forming a through hole that is parallel to the axial direction and through which a shaft passes. The first end portion is a flange portion. The inner peripheral surface includes a first tapered surface, an inner diameter of which is continuously reduced toward the second end portion from the first end portion, and a tapered surface, an inner diameter of which is continuously reduced toward the end portion from the second end portion.Type: GrantFiled: January 26, 2016Date of Patent: May 12, 2020Assignee: Mitsubishi Electric CorporationInventors: Yoshiharu Takashima, Yoshiki Okada, Masafumi Ogawa
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Publication number: 20200119606Abstract: A rotor includes: a plurality of permanent magnets divided at regular intervals in a circumferential direction around a shaft, and provided in an axial direction; a first protection ring for positioning and holding ends in the axial direction of the permanent magnets; a second protection ring for positioning and holding other ends in the axial direction of the permanent magnets; and a protection cover covering outer circumferential surfaces of the permanent magnets, the first protection ring, and the second protection ring, and having a uniform thickness in a radial direction.Type: ApplicationFiled: April 6, 2018Publication date: April 16, 2020Applicant: Mitsubishi Electric CorporationInventors: Hiroki MURAKAMI, Yoshiki OKADA, Yoshiharu TAKASHIMA
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Publication number: 20180278106Abstract: A rotor for an induction motor 300 including end rings having an annular shape, which is provided at an end of a rotor core and is connected to a conductor bar projecting from the end of the rotor core, and first reinforcing members having an annular shape, each of which is provided between the rotor core and the corresponding one of the end rings and is in contact with the corresponding one of the end rings. The first reinforcing members each have an insertion hole formed therein to which the conductor bar projecting from the end of the rotor core is to be inserted.Type: ApplicationFiled: September 21, 2016Publication date: September 27, 2018Applicant: Mitsubishi Electric CorporationInventors: Hiroaki MORIYA, Yoshiharu TAKASHIMA, Shinjiro YAMANE, Yoshiki OKADA
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Patent number: 9935533Abstract: This squirrel-cage motor rotor includes a plurality of conductor bars provided at regular intervals along the circumferential direction of a rotor core, short-circuit rings connected to ends of the conductor bars, and reinforcement covers having axial-direction surfaces being in contact with axial-direction-end surfaces of the short-circuit rings. The reinforcement covers are enclosed by casting in the short-circuit rings. Holding rings are attached to the outer circumferential surfaces of the flange portions of the reinforcement covers and the outer circumferential surfaces of the short-circuit rings by interference fit.Type: GrantFiled: December 25, 2014Date of Patent: April 3, 2018Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Hiroshi Ishikawa, Yoshiharu Takashima, Yoshiki Okada
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Publication number: 20180062466Abstract: In a rotary electric machine, a conductive member surrounds a shaft and a plurality of permanent magnets provided on an outer peripheral portion of the shaft as a whole, and a holding member surrounds the shaft, the plurality of permanent magnets, and the conductive member as a whole. A conductivity of the conductive member is higher than a conductivity of the permanent magnet. The conductive member includes first and second opposing portions that oppose each other via a gap in a circumferential direction. An inter-opposing portion region existing between the first and second opposing portions is positioned within a circumferential direction range of an inter-magnet region existing between permanent magnets that are adjacent to each other in the circumferential direction.Type: ApplicationFiled: July 29, 2016Publication date: March 1, 2018Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Takahiro MIZUTA, Moriyuki HAZEYAMA, Kazumasa ITO, Shinichi YAMAGUCHI, Masatsugu NAKANO, Yoshiharu TAKASHIMA, Yoshiki OKADA, Masafumi OGAWA
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Publication number: 20180054100Abstract: A rotor includes a tubular sleeve member, a plurality of permanent magnets aligned in a peripheral direction on an outer peripheral surface of the sleeve member, and a tubular reinforcing member covering an outer peripheral surface of the permanent magnets. The sleeve member includes first and second end portions, which are spaced apart from each other in an axial direction, and an inner peripheral surface forming a through hole that is parallel to the axial direction and through which a shaft passes. The first end portion is a flange portion. The inner peripheral surface includes a first tapered surface, an inner diameter of which is continuously reduced toward the second end portion from the first end portion, and a tapered surface, an inner diameter of which is continuously reduced toward the end portion from the second end portion.Type: ApplicationFiled: January 26, 2016Publication date: February 22, 2018Applicant: Mitsubishi Electric CorporationInventors: Yoshiharu TAKASHIMA, Yoshiki OKADA, Masafumi OGAWA
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Publication number: 20170054351Abstract: This squirrel-cage motor rotor includes a plurality of conductor bars provided at regular intervals along the circumferential direction of a rotor core, short-circuit rings connected to ends of the conductor bars, and reinforcement covers having axial-direction surfaces being in contact with axial-direction-end surfaces of the short-circuit rings. The reinforcement covers are enclosed by casting in the short-circuit rings. Holding rings are attached to the outer circumferential surfaces of the flange portions of the reinforcement covers and the outer circumferential surfaces of the short-circuit rings by interference fit.Type: ApplicationFiled: December 25, 2014Publication date: February 23, 2017Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Hiroshi ISHIKAWA, Yoshiharu TAKASHIMA, Yoshiki OKADA