Patents by Inventor Takafumi KAJIYA
Takafumi KAJIYA 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: 11233430Abstract: A rotor of a synchronous motor is provided with a plurality of magnets fixed to an outer circumferential surface of a rotor core, and a reinforcement member having a cylindrical shape. An interposition member is disposed between the magnet and the reinforcement member. The magnet includes an outer circumferential surface whose center portion in the circumferential direction bulges outward. The interposition member is formed so as to cover the entire outer circumferential surface of the magnet. An outer circumferential surface of the interposition member has a circular shape when cutting along a plane perpendicular to a rotation axis, and is in close contact with an inner circumferential surface of the reinforcement member.Type: GrantFiled: December 4, 2019Date of Patent: January 25, 2022Assignee: Fanuc CorporationInventors: Katsuhiro Saigusa, Takafumi Kajiya, Kenji Kawai
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Patent number: 10903703Abstract: A rotor includes: a rotary member; a plurality of permanent magnets arranged on an outer circumferential side of the rotary member; and a cover tube provided on an outer circumferential surface side of the plurality of the permanent magnets, and formed by a tape-like fiber bundle in which a plurality of thread-like fibers aligned in one direction is bundled smoothly by resin, in which the cover tube is formed so that the tape-like fiber bundle circles in a spiral pattern along the circumferential direction, and the tape-like fiber bundle arranges along the axial direction, and a circling-start end face and a circling-end end face of the tape-like fiber bundle face the axial direction of the cover tube.Type: GrantFiled: September 29, 2018Date of Patent: January 26, 2021Assignee: FANUC CORPORATIONInventors: Shinobu Takano, Takafumi Kajiya, Hisashi Maeda, Kaname Matsumoto
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Patent number: 10790084Abstract: A multi-phase iron-core reactor has an iron core and windings. The iron core includes an outer iron core and an inner iron core. The outer iron core has teeth on which the N-phase windings are wound. The inner iron core faces the teeth through gaps, and has a shape so as to be able to provide at least two gap sizes in a selective manner.Type: GrantFiled: January 25, 2018Date of Patent: September 29, 2020Assignee: Fanuc CorporationInventors: Takafumi Kajiya, Hisashi Maeda
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Patent number: 10749393Abstract: A rotor includes a rotary member, a plurality of permanent magnets disposed on an outer circumference of the rotary member, and a cover tube that is mounted to outer circumference of the permanent magnets to cover the permanent magnets, and is formed of a fiber reinforced plastic. At least one of the rotary member and the permanent magnets has a diameter enlarged portion having a diameter enlarged circumferential surface. The diameter enlarged portion has a diameter that enlarges from a first diameter region to a second diameter region. The first diameter region has a diameter equal to or less than an inner diameter of the cover tube. The second diameter region has a diameter equal to or more than an outer diameter of the permanent magnets.Type: GrantFiled: May 31, 2018Date of Patent: August 18, 2020Assignee: FANUC CORPORATIONInventors: Shinobu Takano, Takafumi Kajiya, Kaname Matsumoto
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Patent number: 10707711Abstract: A rotor includes: a rotating member; a permanent magnet arranged in a plurality of rows along a circumferential direction of the rotating member and divided into a plurality of parts in a rotational axis direction X of the rotating member; and a cover tube divided into a plurality of parts in the rotational axis direction of the rotating member and covering an outer circumferential surface of the permanent magnet, the cover tube being formed of a fiber-reinforced plastic, wherein the plurality of permanent magnets in each row are arranged in an oblique direction with respect to the rotational axis direction of the rotating member, and the permanent magnets adjacent to the arrangement direction are disposed to be skewed in the circumferential direction, and at least one of the divided cover tubes covers an outer circumferential surface of one of the divided permanent magnets in the circumferential direction of the rotating member.Type: GrantFiled: August 10, 2018Date of Patent: July 7, 2020Assignee: FANUC CORPORATIONInventors: Shinobu Takano, Hisashi Maeda, Takafumi Kajiya
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Publication number: 20200185989Abstract: A rotor of a synchronous motor is provided with a plurality of magnets fixed to an outer circumferential surface of a rotor core, and a reinforcement member having a cylindrical shape. An interposition member is disposed between the magnet and the reinforcement member. The magnet includes an outer circumferential surface whose center portion in the circumferential direction bulges outward. The interposition member is formed so as to cover the entire outer circumferential surface of the magnet. An outer circumferential surface of the interposition member has a circular shape when cutting along a plane perpendicular to a rotation axis, and is in close contact with an inner circumferential surface of the reinforcement member.Type: ApplicationFiled: December 4, 2019Publication date: June 11, 2020Applicant: Fanuc CorporationInventors: Katsuhiro Saigusa, Takafumi Kajiya, Kenji Kawai
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Patent number: 10630126Abstract: A rotor is configured such that the rotor includes: a rotary tube whose inner circumferential surface is tapered and which is fitted to a rotary shaft whose outer circumferential surface is tapered; a permanent magnet which is arranged on the outer circumferential side of the rotary tube; and a sheath tube which is fitted to the outer circumferential side of the permanent magnet so as to cover the permanent magnet, and that as the outside diameter of a multilayer member formed with the rotary tube and the permanent magnet is reduced so as to be tapered along an axial direction, the interference of the sheath tube for the multilayer member is increased so as to be tapered along the axial direction.Type: GrantFiled: December 1, 2018Date of Patent: April 21, 2020Assignee: FANUC CORPORATIONInventors: Shinobu Takano, Takafumi Kajiya, Kenji Kawai, Hisashi Maeda
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Patent number: 10622854Abstract: A rotor includes: a rotary member; a plurality of permanent magnets that are arranged on the outer circumferential side of the rotary member; and a cover tube that is provided on the side of an outer circumferential surface of the plurality of the permanent magnets and that is formed with a fiber bundle in which a plurality of fiber reinforced plastic filaments are arranged along a longitudinal direction, and the fiber bundle of the cover tube is spirally stacked in layers along a circumferential direction of the rotary member such that a part of the fiber bundle in a width direction is slackened.Type: GrantFiled: August 28, 2018Date of Patent: April 14, 2020Assignee: FANUC CORPORATIONInventors: Shinobu Takano, Takafumi Kajiya, Yohei Arimatsu
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Patent number: 10594194Abstract: A rotor includes a rotary member; a plurality of permanent magnets disposed in an outer circumference of the rotary member; a holding member that is provided on an outer circumferential surface of the permanent magnets to hold the permanent magnets, the holding member having a cylindrical shape formed of a fiber reinforced plastic; and cover members that cover at least both end portions of a longitudinal direction D1 of the holding member.Type: GrantFiled: May 31, 2018Date of Patent: March 17, 2020Assignee: FANUC CORPORATIONInventors: Shinobu Takano, Takafumi Kajiya, Hisashi Maeda
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Patent number: 10580565Abstract: A reactor includes a core body; a first end plate and a second end plate which sandwich and fasten the core body; and a plurality of axis portions disposed in the vicinity of an outer edge portion of the core body or outward of the core body and supported by the first end plate and the second end plate.Type: GrantFiled: September 6, 2017Date of Patent: March 3, 2020Assignee: FANUC CORPORATIONInventors: Takuya Maeda, Masatomo Shirouzu, Takafumi Kajiya
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Patent number: 10581288Abstract: A rotor includes: a rotary member; permanent magnets in a plurality of columns which are arranged along the circumferential direction of the rotary member and each of which is divided into a plurality of permanent magnets in a rotary axis direction X of the rotary member; and a sheath tube which is fitted to the outer circumferential side of the permanent magnets, which covers the permanent magnets and which is formed of a fiber-reinforced plastic, and the sheath tube is divided, in the rotary axis direction X of the rotary member, by a division number which exceeds the division number of the permanent magnets.Type: GrantFiled: June 15, 2018Date of Patent: March 3, 2020Assignee: FANUC CORPORATIONInventors: Shinobu Takano, Takafumi Kajiya, Kenji Kawai
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Publication number: 20190181707Abstract: A rotor is configured such that the rotor includes: a rotary tube whose inner circumferential surface is tapered and which is fitted to a rotary shaft whose outer circumferential surface is tapered; a permanent magnet which is arranged on the outer circumferential side of the rotary tube; and a sheath tube which is fitted to the outer circumferential side of the permanent magnet so as to cover the permanent magnet, and that as the outside diameter of a multilayer member formed with the rotary tube and the permanent magnet is reduced so as to be tapered along an axial direction, the interference of the sheath tube for the multilayer member is increased so as to be tapered along the axial direction.Type: ApplicationFiled: December 1, 2018Publication date: June 13, 2019Applicant: FANUC CORPORATIONInventors: Shinobu TAKANO, Takafumi KAJIYA, Kenji KAWAI, Hisashi MAEDA
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Publication number: 20190109502Abstract: A rotor includes: a rotary member; a plurality of permanent magnets arranged on an outer circumferential side of the rotary member; and a cover tube provided on an outer circumferential surface side of the plurality of the permanent magnets, and formed by a tape-like fiber bundle in which a plurality of thread-like fibers aligned in one direction is bundled smoothly by resin, in which the cover tube is formed so that the tape-like fiber bundle circles in a spiral pattern along the circumferential direction, and the tape-like fiber bundle arranges along the axial direction, and a circling-start end face and a circling-end end face of the tape-like fiber bundle face the axial direction of the cover tube.Type: ApplicationFiled: September 29, 2018Publication date: April 11, 2019Applicant: Fanuc CorporationInventors: Shinobu Takano, Takafumi Kajiya, Hisashi Maeda, Kaname Matsumoto
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Publication number: 20190081524Abstract: A rotor includes: a rotary member; a plurality of permanent magnets that are arranged on the outer circumferential side of the rotary member; and a cover tube that is provided on the side of an outer circumferential surface of the plurality of the permanent magnets and that is formed with a fiber bundle in which a plurality of fiber reinforced plastic filaments are arranged along a longitudinal direction, and the fiber bundle of the cover tube is spirally stacked in layers along a circumferential direction of the rotary member such that a part of the fiber bundle in a width direction is slackened.Type: ApplicationFiled: August 28, 2018Publication date: March 14, 2019Applicant: FANUC CORPORATIONInventors: Shinobu TAKANO, Takafumi KAJIYA, Yohei ARIMATSU
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Publication number: 20190068014Abstract: A rotor includes: a rotating member; a permanent magnet arranged in a plurality of rows along a circumferential direction of the rotating member and divided into a plurality of parts in a rotational axis direction X of the rotating member; and a cover tube divided into a plurality of parts in the rotational axis direction of the rotating member and covering an outer circumferential surface of the permanent magnet, the cover tube being formed of a fiber-reinforced plastic, wherein the plurality of permanent magnets in each row are arranged in an oblique direction with respect to the rotational axis direction of the rotating member, and the permanent magnets adjacent to the arrangement direction are disposed to be skewed in the circumferential direction, and at least one of the divided cover tubes covers an outer circumferential surface of one of the divided permanent magnets in the circumferential direction of the rotating member.Type: ApplicationFiled: August 10, 2018Publication date: February 28, 2019Applicant: FANUC CORPORATIONInventors: Shinobu TAKANO, Hisashi MAEDA, Takafumi KAJIYA
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Publication number: 20190036404Abstract: A rotor includes: a rotary member; permanent magnets in a plurality of columns which are arranged along the circumferential direction of the rotary member and each of which is divided into a plurality of permanent magnets in a rotary axis direction X of the rotary member; and a sheath tube which is fitted to the outer circumferential side of the permanent magnets, which covers the permanent magnets and which is formed of a fiber-reinforced plastic, and the sheath tube is divided, in the rotary axis direction X of the rotary member, by a division number which exceeds the division number of the permanent magnets.Type: ApplicationFiled: June 15, 2018Publication date: January 31, 2019Applicant: FANUC CORPORATIONInventors: Shinobu TAKANO, Takafumi KAJIYA, Kenji KAWAI
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Patent number: D864867Type: GrantFiled: September 20, 2017Date of Patent: October 29, 2019Assignee: FANUC CORPORATIONInventors: Masatomo Shirouzu, Takafumi Kajiya, Takuya Maeda, Kenichi Tsukada
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Patent number: D865670Type: GrantFiled: September 20, 2017Date of Patent: November 5, 2019Assignee: FANUC CORPORATIONInventors: Masatomo Shirouzu, Takafumi Kajiya, Takuya Maeda
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Patent number: D875663Type: GrantFiled: September 20, 2017Date of Patent: February 18, 2020Assignee: FANUC CORPORATIONInventors: Masatomo Shirouzu, Takafumi Kajiya, Takuya Maeda
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Patent number: D876338Type: GrantFiled: September 20, 2017Date of Patent: February 25, 2020Assignee: FANUC CORPORATIONInventors: Masatomo Shirouzu, Takafumi Kajiya, Takuya Maeda, Kenichi Tsukada