Patents by Inventor Keiichiro Oka
Keiichiro Oka 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: 11387720Abstract: A wave winding coil (9) has a first linear part (11a), second linear part (11b), arm part (12) and turn part (13). A retaining apparatus (1) retains the first linear part (11a) along the axis line direction between middle pins (3b, 3b) of a middle body part (3), and retains the second linear part (11b) between upper pins (2b, 2b), middle pins (3b, 3b), and lower pins (4b, 4b), in a state where sections of both ends of the second linear part (11b) in the axis line direction deviate to each other in circumferential opposite sides of the wave winding coil (9) to the axis line direction of the wave winding coil (9) and in a state where a bent angle ?b? between the second linear part (11b) and the connecting part is smaller than a bent angle ?a? between the first linear part (11a) and the connecting part.Type: GrantFiled: January 7, 2019Date of Patent: July 12, 2022Assignee: HONDA MOTOR CO., LTD.Inventor: Keiichiro Oka
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Patent number: 11108307Abstract: A coil (1) for a rotary electric machine is annularly formed by twelve coil members (10), each coil member (10) is configured of four coil elements (10A) to (10D), the coil elements (10A) to (10D) integrally include a plurality of sets of coil element structures each set of coil element structures including a pair of base portions (11), and four arm portions (12) and two curl portions (13), and the plurality of sets of coil element structures are annularly configured.Type: GrantFiled: September 25, 2018Date of Patent: August 31, 2021Assignee: HONDA MOTOR CO., LTD.Inventor: Keiichiro Oka
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Patent number: 11018482Abstract: The present invention relates to a method of coating-peeling and a coating-peeling apparatus. The method of coating-peeling includes a gripping step and a peeling step, and peels by a pair of peeling blades peeling target portions of an insulating coating covering peeling target side surfaces of a rectangular conductor wire. In the gripping step, abutting sections of a pair of gripping members abut on gripping target portions of the insulating coating, whereby the rectangular conductor wire is gripped between the abutting sections. In the peeling step, in a state where the rectangular conductor wire has been gripped by the gripping members, the peeling blades are moved relatively following a surface direction of the peeling target side surfaces while opposing each other sandwiching the peeling target side surfaces, whereby the peeling target portions are peeled.Type: GrantFiled: September 25, 2018Date of Patent: May 25, 2021Assignee: HONDA MOTOR CO., LTD.Inventors: Keiichiro Oka, Yosuke Komatsu, Kenji Masai, Tomotsugu Takahashi, Junya Shigeno
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Patent number: 10951079Abstract: A coil for a rotary electric machine is mounted in a plurality of slots of a stator core having the slots in a circumferential direction. An overlapping coil-type wave winding coil constituted by a coil wire having a plurality of slot accommodating portions accommodated in the slots and a plurality of coil end portions interconnecting, in a chevron shape, the slot accommodating portions next to each other outside the slots in an axial direction of the stator core constitutes the coil. At least two layers of the coil wire are connected by a continuous wire-based connecting portion, folded back in the connecting portion, and stacked.Type: GrantFiled: January 31, 2019Date of Patent: March 16, 2021Assignee: HONDA MOTOR CO., LTD.Inventors: Keiichiro Oka, Kenichi Omagari, Takahiro Ide
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Patent number: 10910900Abstract: A coil (3) for a rotary electric machine (3) is constituted by eight layers, and includes an inner coil member (10B) constituting one layer, three layers, five layers, and seven layers, and an outer coil member (10A) constituting two layers, four layers, six layers, and eight layers. An outer upper right arm bending part (31), an outer upper left arm bending part (32), an outer lower right arm bending part (33), and an outer lower left arm bending part (34) of the outer coil member (10A) are formed, at a position where some portions are not overlaid on each other, when six inner coil members (10B) constituting seven layers are arranged to be overlaid on six outer coil members (10A) constituting eight layers.Type: GrantFiled: March 25, 2019Date of Patent: February 2, 2021Assignee: HONDA MOTOR CO., LTD.Inventor: Keiichiro Oka
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Patent number: 10843249Abstract: A machining apparatus includes a movement direction converting mechanism that converts lowering movement of a first punch into raising movement of a second punch and converts lowering movement of the second punch into raising movement of the first punch. The first punch and the second punch are raised and lowered in an alternating manner by this movement direction converting mechanism. Accordingly, machining by the first punch and machining by the second punch are performed individually.Type: GrantFiled: September 26, 2018Date of Patent: November 24, 2020Assignee: HONDA MOTOR CO., LTD.Inventors: Keiichiro Oka, Takayuki Motojima, Yosuke Komatsu, Yasuhiro Kinoshita
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Patent number: 10749417Abstract: A stator core constituting a stator at least includes first core members and a second core member. Each first core member includes a first annular portion in which slots are formed and first tab portions. On the other hand, the second core member includes a second annular portion in which the slots are formed and that is superposed on the first annular portions, and has a shape obtained by removing the first tab portions from the first core member. Electrical conductors are partially fitted in the overlapping slots.Type: GrantFiled: September 17, 2018Date of Patent: August 18, 2020Assignee: HONDA MOTOR CO., LTD.Inventors: Keiichiro Oka, Kenji Masai
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Patent number: 10556767Abstract: A first leading end plate and a first rear end plate are provided at an upper part of a rotary table. When a conductor piece contacts the first leading end plate, a first contact detection sensor detects a contact of the conductor piece, and transmits a contact detection signal to a storage control unit. Upon receiving the contact detection signal, the storage control unit drives an air supply device for a predetermined period to spray air toward the conductor piece from a first air nozzle. The air spray brings the conductor piece into a tilted state with the rear end thereof moved downward. Even when the conductor piece contacts the first leading end plate and rebounds, the rear end thereof contacts an inner wall surface of the first rear end plate, thereby preventing the rear end of the conductor piece from getting over the first rear end plate.Type: GrantFiled: July 5, 2017Date of Patent: February 11, 2020Assignee: HONDA MOTOR CO., LTD.Inventors: Keiichiro Oka, Daisuke Ueno, Tsutomu Ogasawara, Hideki Shigematsu
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Publication number: 20190305622Abstract: A coil (3) for a rotary electric machine (3) is constituted by eight layers, and includes an inner coil member (10B) constituting one layer, three layers, five layers, and seven layers, and an outer coil member (10A) constituting two layers, four layers, six layers, and eight layers. An outer upper right arm bending part (31), an outer upper left arm bending part (32), an outer lower right arm bending part (33), and an outer lower left arm bending part (34) of the outer coil member (10A) are formed, at a position where some portions are not overlaid on each other, when six inner coil members (10B) constituting seven layers are arranged to be overlaid on six outer coil members (10A) constituting eight layers.Type: ApplicationFiled: March 25, 2019Publication date: October 3, 2019Inventor: Keiichiro Oka
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Publication number: 20190305621Abstract: The wound coil (7) includes first to fourth inner bases (11a) to (11d), first to fourth outer bases (12a) to (12d). The wound coil (7) includes first to fourth upper connection portions (16a) to (16d), first to third lower connection portions (17a) to (17c), and first to fourth winding portions (18a) to (18d). In the first to fourth winding portions (18a) to (18d), the third and fourth upper connection portions (16c) and (16d) are stacked on the first and second upper connection portions (16a) and (16b) in the circumferential direction D1 and the first and third lower connection portions (17a) and (17c) are continuously stacked on the second lower connection portion (17b) in the circumferential direction D1.Type: ApplicationFiled: March 25, 2019Publication date: October 3, 2019Inventors: Keiichiro Oka, Kazuhito Hiraga, Kenichi Omagari
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Publication number: 20190260249Abstract: A coil for a rotary electric machine is mounted in a plurality of slots of a stator core having the slots in a circumferential direction. An overlapping coil-type wave winding coil constituted by a coil wire having a plurality of slot accommodating portions accommodated in the slots and a plurality of coil end portions interconnecting, in a chevron shape, the slot accommodating portions next to each other outside the slots in an axial direction of the stator core constitutes the coil. At least two layers of the coil wire are connected by a continuous wire-based connecting portion, folded back in the connecting portion, and stacked.Type: ApplicationFiled: January 31, 2019Publication date: August 22, 2019Inventors: Keiichiro Oka, Kenichi Omagari, Takahiro Ide
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Publication number: 20190222104Abstract: A wave winding coil (9) has a first linear part (11a), second linear part (11b), arm part (12) and turn part (13). A retaining apparatus (1) retains the first linear part (11a) along the axis line direction between middle pins (3b, 3b) of a middle body part (3), and retains the second linear part (11b) between upper pins (2b, 2b), middle pins (3b, 3b), and lower pins (4b, 4b), in a state where sections of both ends of the second linear part (11b) in the axis line direction deviate to each other in circumferential opposite sides of the wave winding coil (9) to the axis line direction of the wave winding coil (9) and in a state where a bent angle ?b? between the second linear part (11b) and the connecting part is smaller than a bent angle ?a? between the first linear part (11a) and the connecting part.Type: ApplicationFiled: January 7, 2019Publication date: July 18, 2019Inventor: Keiichiro Oka
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Publication number: 20190103734Abstract: The present invention relates to a method of coating-peeling and a coating-peeling apparatus. The method of coating-peeling includes a gripping step and a peeling step, and peels by a pair of peeling blades peeling target portions of an insulating coating covering peeling target side surfaces of a rectangular conductor wire. In the gripping step, abutting sections of a pair of gripping members abut on gripping target portions of the insulating coating, whereby the rectangular conductor wire is gripped between the abutting sections. In the peeling step, in a state where the rectangular conductor wire has been gripped by the gripping members, the peeling blades are moved relatively following a surface direction of the peeling target side surfaces while opposing each other sandwiching the peeling target side surfaces, whereby the peeling target portions are peeled.Type: ApplicationFiled: September 25, 2018Publication date: April 4, 2019Inventors: Keiichiro Oka, Yosuke Komatsu, Kenji Masai, Tomotsugu Takahashi, Junya Shigeno
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Publication number: 20190103790Abstract: A coil (1) for a rotary electric machine is annularly formed by twelve coil members (10), each coil member (10) is configured of four coil elements (10A) to (10D), the coil elements (10A) to (10D) integrally include a plurality of sets of coil element structures each set of coil element structures including a pair of base portions (11), and four arm portions (12) and two curl portions (13), and the plurality of sets of coil element structures are annularly configured.Type: ApplicationFiled: September 25, 2018Publication date: April 4, 2019Inventor: Keiichiro Oka
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Publication number: 20190099798Abstract: A machining apparatus includes a movement direction converting mechanism that converts lowering movement of a first punch into raising movement of a second punch and converts lowering movement of the second punch into raising movement of the first punch. The first punch and the second punch are raised and lowered in an alternating manner by this movement direction converting mechanism. Accordingly, machining by the first punch and machining by the second punch are performed individually.Type: ApplicationFiled: September 26, 2018Publication date: April 4, 2019Inventors: Keiichiro Oka, Takayuki Motojima, Yosuke Komatsu, Yasuhiro Kinoshita
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Publication number: 20190089230Abstract: A stator core constituting a stator at least includes first core members and a second core member. Each first core member includes a first annular portion in which slots are formed and first tab portions. On the other hand, the second core member includes a second annular portion in which the slots are formed and that is superposed on the first annular portions, and has a shape obtained by removing the first tab portions from the first core member. Electrical conductors are partially fitted in the overlapping slots.Type: ApplicationFiled: September 17, 2018Publication date: March 21, 2019Inventors: Keiichiro Oka, Kenji Masai
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Publication number: 20190081540Abstract: An electric conductor insertion device and insertion method with which the impact of variations in axial direction length of a stator core can be suppressed. An insertion device includes: a guide part that guides a leg part into a slot; a pair of expanding plates that extend in an insertion direction and are capable of expanding at the distal end side; a relative movement part that relatively moves the guide part or a stator core in the axial direction so that distal ends of the expanding plates are disposed on the inside of a protruding part of the insulation paper; a pressing part that presses a top surface of the stator core downwards in the axial direction; and an insertion movement part that inserts the leg part and presses the leg part in the insertion direction to insert the leg part into the slot.Type: ApplicationFiled: March 17, 2017Publication date: March 14, 2019Inventors: Keiichiro Oka, Yutaka Matsumoto
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Publication number: 20180009621Abstract: A first leading end plate and a first rear end plate are provided at an upper part of a rotary table. When a conductor piece contacts the first leading end plate, a first contact detection sensor detects a contact of the conductor piece, and transmits a contact detection signal to a storage control unit. Upon receiving the contact detection signal, the storage control unit drives an air supply device for a predetermined period to spray air toward the conductor piece from a first air nozzle. The air spray brings the conductor piece into a tilted state with the rear end thereof moved downward. Even when the conductor piece contacts the first leading end plate and rebounds, the rear end thereof contacts an inner wall surface of the first rear end plate, thereby preventing the rear end of the conductor piece from getting over the first rear end plate.Type: ApplicationFiled: July 5, 2017Publication date: January 11, 2018Inventors: Keiichiro Oka, Daisuke Ueno, Tsutomu Ogasawara, Hideki Shigematsu
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Patent number: 9608489Abstract: Provided are an armature for rotary electric machine, an insulator therefor, and a coil winding device for winding a conductive wire on a tooth to which the insulator has been attached, wherein in each of all forward-wound coils and reversely-wound coils, a part wound on a first side surface of two side surfaces of each tooth that are opposed to the respective adjacent teeth forms a straight portion in which conductive wires in respective layers of the coil are parallel, a part wound on a second side surface forms a cross portion in which the conductive wire in an upper layer is wound in a crossed manner on the conductive wire in an adjacent lower layer, and an insulator has a guide for guiding the conductive wire along a base of an inner flange of the insulator at a first turn of each coil.Type: GrantFiled: February 15, 2013Date of Patent: March 28, 2017Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Keiichiro Oka, Hiroyuki Akita, Kunihiro Yamaoka
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Publication number: 20160380500Abstract: A cold-welded conductor wire has a connection portion formed by a first conductor wire and a second conductor wire being connected by cold welding, and has: a bent portion bent at a location different from the connection portion; and an insulating case formed by an insulating sheet wrapping the connection portion and being bonded.Type: ApplicationFiled: January 27, 2014Publication date: December 29, 2016Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Keiichiro OKA, Kazuyuki YAMAMOTO, Hiroyuki AKITA