Patents by Inventor Keiichiro Kashiwabara
Keiichiro Kashiwabara 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: 20230009899Abstract: A stator, of a rotating electrical machine, includes a core including a plurality of teeth and a slot formed between the teeth, and a plurality of coils inserted into the slot and fixed with varnish, in which the plurality of coils is disposed side by side in a radial direction in the slot, and the varnish is most applied to at least an innermost diameter side coil among the plurality of coils in the slot.Type: ApplicationFiled: July 11, 2022Publication date: January 12, 2023Applicants: Hitachi Astemo, Ltd., Honda Motor Co., Ltd.Inventors: Hideaki NOTO, Hiroshi AOKI, Shunsuke ISOGAI, Keiichiro KASHIWABARA, Norifumi YASUDA, Tsutomu YOSHINARI
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Patent number: 11502581Abstract: Disclosed is a motor unit that includes: a rotary electrical machine that has a cylindrical stator, a rotor disposed coaxially with the stator, a shaft disposed coaxially with the rotor, and a cylindrical case that houses the stator and the rotor; and a drive unit that has a swell swelling toward the case and is fixed to a circumferential surface that is located in a radial direction of the rotor and is the case. The case has a recess that corresponds to the swell.Type: GrantFiled: March 10, 2020Date of Patent: November 15, 2022Assignees: HONDA MOTOR CO., LTD., Hitachi Automotive Systems, Ltd.Inventors: Manabu Yazaki, Keiichiro Kashiwabara, Tomoyuki Suzuki, Heisuke Kobayashi, Takeshi Hoshinoya, Sachio Kawada, Akira Fujiwara, Yasuyuki Saito, Hiroshi Hamano, Tsuyoshi Harada
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Patent number: 11437876Abstract: The present invention provides a rotating electrical machine capable of fixing a permanent magnet at a defined position of a magnet insertion hole without providing a filling groove for injection of a filler in a rotor core and, of course, without lowering performance as the rotating electric machine. A rotating electrical machine of the present invention includes: a rotor; and a stator, the rotor including: a rotor core provided with a plurality of magnet insertion holes; a permanent magnet inserted into the magnet insertion hole; and a filler configured to fix the permanent magnet to the magnet insertion hole.Type: GrantFiled: June 27, 2018Date of Patent: September 6, 2022Assignees: HONDA MOTOR CO., LTD., HITACHI ASTEMO, LTD.Inventors: Takayuki Nitta, Yasuyuki Saito, Yuji Kobayashi, Manabu Yazaki, Keiichiro Kashiwabara, Atsushi Nishida
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Publication number: 20220263389Abstract: A driving unit includes a rotary electric machine which has a rotation axis extending in a horizontal direction, a rotary electric machine case, and an electric power conversion device. The electric power conversion device is disposed on one side of the rotary electric machine in an orthogonal direction. A first coolant is stored in a rotary electric machine accommodating portion of the rotary electric machine case. The driving unit has a first connecting portion electrically connecting the rotary electric machine and the electric power conversion device and a second connecting portion electrically connecting a sensor provided to the rotary electric machine and the electric power conversion device. The first connecting portion and the second connecting portion are disposed between the rotary electric machine and the electric power conversion device in the orthogonal direction.Type: ApplicationFiled: June 29, 2020Publication date: August 18, 2022Applicants: HONDA MOTOR CO., LTD., HITACHI ASTEMO, LTD.Inventors: Heisuke KOBAYASHI, Takeshi HOSHINOYA, Keiichiro KASHIWABARA, Norifumi YASUDA, Manabu YAZAKI, Tomoyuki SUZUKI, Akira FUJIWARA, Hideaki NOTO, Shunsuke ISOGAI, Yu ASAKURA
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Publication number: 20220247253Abstract: A rotating electrical machine case includes a case body having a cylindrical shape surrounding a rotating electrical machine and a side wall portion provided on at least one end side of the case body in a rotation axis direction. The side wall portion is provided with a plurality of ribs extending in a radial direction when viewed from the rotation axis direction of a rotating electrical machine and the plurality of ribs include ribs having different circumferential widths.Type: ApplicationFiled: June 29, 2020Publication date: August 4, 2022Applicants: HONDA MOTOR CO., LTD., HITACHI ASTEMO, LTD.Inventors: Atsushi NISHIDA, Keiichiro KASHIWABARA, Akira FUJIWARA, Sachio KAWADA, Hideaki NOTO, Shunsuke ISOGAI
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Patent number: 11370152Abstract: A rotor manufacturing method, which is method for manufacturing a rotor that includes a rotor core and a magnet inserted into a slot formed in the rotor core, includes a magnet-insertion step of inserting the magnet into the slot; and a fixing-material-injection step of injecting a fixing material into a space between an inner surface of the slot and the magnet from a plurality of fixing-material-injection portions of the slot. In the fixing-material-injection step, a time for starting injection of the fixing material into the slot is made to differ among the plurality of fixing-material-injection portions.Type: GrantFiled: August 7, 2018Date of Patent: June 28, 2022Assignee: HONDA MOTOR CO., LTD.Inventors: Atsushi Nishida, Manabu Yazaki, Keiichiro Kashiwabara
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Publication number: 20210006123Abstract: An electric rotary machine case, which has a cylindrical shape and accommodates an electric rotary machine, includes a passage extending along a rotation axis direction of the electric rotary machine on an outer periphery of the electric rotary machine, and a protrusion portion protruding radially outward from an outer peripheral surface of the electric rotary machine case, the protrusion portion having the passage formed inside the protrusion portion. The protrusion portion has a flat surface in a cross-section orthogonal to a rotation axis of the electric rotary machine.Type: ApplicationFiled: July 2, 2020Publication date: January 7, 2021Applicant: HONDA MOTOR CO., LTD.Inventors: Keiichiro KASHIWABARA, Rintaro ENDO, Atsushi NISHIDA
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Patent number: 10868450Abstract: A rotor of a rotary electric machine includes a rotor core having a slot in an outer circumferential portion thereof, a permanent magnet inserted in the slot, and a resin injected into the slot to fix the permanent magnet in the slot, wherein an injection fixing space into which the resin is injected to fix the permanent magnet in the slot, and a non-injection space into which the resin is not injected are provided in a space within the slot, the non-injection space is disposed at a position adjacent to an outer side of the rotor core in a radial direction with respect to the injection fixing space, and an edge of the non-injection space includes a surface of the resin injected into the injection fixing space, and a first region on an inner surface of the slot which continues to the surface of the resin.Type: GrantFiled: September 25, 2018Date of Patent: December 15, 2020Assignee: HONDA MOTOR CO., LTD.Inventors: Keiichiro Kashiwabara, Atsushi Nishida, Manabu Yazaki
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Patent number: 10787194Abstract: A power system includes an electric motor for driving a left wheel and a right wheel of a vehicle, an electric motor control device for controlling the electric motor, a transmission disposed on a power transmission path between the electric motor, the left and right wheels, a differential device for distributing output decelerated by the transmission to the left and right wheels, a case which accommodates the electric motor, the transmission, and the differential device, a left axle of which one end is connected to the differential device and the other end extends from the case to be connected to the left wheel, and a right axle of which one end is connected to the differential device and the other end extends from the case to be connected to the right wheel. A conductive rotation allowing member having conductivity is provided between the differential device and the case.Type: GrantFiled: March 1, 2019Date of Patent: September 29, 2020Assignee: HONDA MOTOR CO., LTD.Inventors: Rintaro Endo, Taku Ueda, Keiichiro Kashiwabara
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Publication number: 20200295629Abstract: Disclosed is a motor unit that includes: a rotary electrical machine that has a cylindrical stator, a rotor disposed coaxially with the stator, a shaft disposed coaxially with the rotor, and a cylindrical case that houses the stator and the rotor; and a drive unit that has a swell swelling toward the case and is fixed to a circumferential surface that is located in a radial direction of the rotor and is the case. The case has a recess that corresponds to the swell.Type: ApplicationFiled: March 10, 2020Publication date: September 17, 2020Inventors: Manabu Yazaki, Keiichiro Kashiwabara, Tomoyuki Suzuki, Heisuke Kobayashi, Takeshi Hoshinoya, Sachio Kawada, Akira Fujiwara, Yasuyuki Saito, Hiroshi Hamano, Tsuyoshi Harada
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Publication number: 20190270477Abstract: A power system includes an electric motor for driving a left wheel and a right wheel of a vehicle, an electric motor control device for controlling the electric motor, a transmission disposed on a power transmission path between the electric motor, the left and right wheels, a differential device for distributing output decelerated by the transmission to the left and right wheels, a case which accommodates the electric motor, the transmission, and the differential device, a left axle of which one end is connected to the differential device and the other end extends from the case to be connected to the left wheel, and a right axle of which one end is connected to the differential device and the other end extends from the case to be connected to the right wheel. A conductive rotation allowing member having conductivity is provided between the differential device and the case.Type: ApplicationFiled: March 1, 2019Publication date: September 5, 2019Applicant: HONDA MOTOR CO., LTD.Inventors: Rintaro ENDO, Taku UEDA, Keiichiro KASHIWABARA
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Publication number: 20190103775Abstract: A rotor of a rotary electric machine includes a rotor core having a slot in an outer circumferential portion thereof, a permanent magnet inserted in the slot, and a resin injected into the slot to fix the permanent magnet in the slot, wherein an injection fixing space into which the resin is injected to fix the permanent magnet in the slot, and a non-injection space into which the resin is not injected are provided in a space within the slot, the non-injection space is disposed at a position adjacent to an outer side of the rotor core in a radial direction with respect to the injection fixing space, and an edge of the non-injection space includes a surface of the resin injected into the injection fixing space, and a first region on an inner surface of the slot which continues to the surface of the resin.Type: ApplicationFiled: September 25, 2018Publication date: April 4, 2019Inventors: Keiichiro Kashiwabara, Atsushi Nishida, Manabu Yazaki
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Publication number: 20190047189Abstract: A rotor manufacturing method, which is method for manufacturing a rotor that includes a rotor core and a magnet inserted into a slot formed in the rotor core, includes a magnet-insertion step of inserting the magnet into the slot; and a fixing-material-injection step of injecting a fixing material into a space between an inner surface of the slot and the magnet from a plurality of fixing-material-injection portions of the slot. In the fixing-material-injection step, a time for starting injection of the fixing material into the slot is made to differ among the plurality of fixing-material-injection portions.Type: ApplicationFiled: August 7, 2018Publication date: February 14, 2019Applicant: HONDA MOTOR CO., LTD.Inventors: Atsushi Nishida, Manabu Yazaki, Keiichiro Kashiwabara