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1.发明公开
公开(公告)号：EP4181365A1
公开(公告)日：2023-05-17
申请号：EP21837998.0
申请日：2021-07-06
发明人： TAKEDA, Kazutoshi , TAKATANI, Shinsuke , HIRAYAMA, Ryu , IWASE, Yoshiaki , NIWA, Makoto , YAMADA, Masashi
IPC分类号： H02K15/02
摘要： This adhesively-laminated core manufacturing method is a method for manufacturing an adhesively-laminated core by punching a plurality of steel sheet parts while a strip-shaped steel sheet is fed and laminating the steel sheet parts via an adhesive, and includes a step of forming a curing acceleration portion by applying and drying a curing accelerator on one or both surfaces of the strip-shaped steel sheet before a pressing oil is applied, and a step of applying the pressing oil to a surface of the curing acceleration portion.
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公开(公告)号：EP4325701A1
公开(公告)日：2024-02-21
申请号：EP22788185.1
申请日：2022-04-13
发明人： TAKEDA, Kazutoshi , TAKATANI, Shinsuke , HIRAYAMA, Ryu , FUKUCHI, Minako , IWASE, Yoshiaki , NIWA, Makoto , HIRAKAWA, Makoto
摘要： This electrical steel sheet contains: as a chemical composition, in a unit of mass%, 2.5% to 3.9% of Si; 0.001% to 3.0% of Al; and 0.05% to 5.0% of Mn, the remainder being Fe and impurities, and, on one surface or both surfaces thereof, an insulating coating containing a curing accelerator is formed.
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3.发明公开
公开(公告)号：EP4325535A1
公开(公告)日：2024-02-21
申请号：EP22788187.7
申请日：2022-04-13
发明人： TAKEDA, Kazutoshi , TAKATANI, Shinsuke , HIRAYAMA, Ryu , FUKUCHI, Minako , IWASE, Yoshiaki , NIWA, Makoto , HIRAKAWA, Makoto
摘要： This bonded and stacked core manufacturing method is for manufacturing a bonded and stacked core by performing press working on a strip-shaped steel sheet with a press working oil applied to one surface or both surfaces thereof, applying an adhesive to one surface of the strip-shaped steel sheet to obtain a plurality of steel sheet components, and stacking and bonding the steel sheet components, in which a curing accelerator having an average viscosity of 0.01 Pa·s to 100 Pa·s is applied to one surface or both surfaces of the strip-shaped steel sheet before the press working oil is applied.
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公开(公告)号：EP4060068A1
公开(公告)日：2022-09-21
申请号：EP20886906.5
申请日：2020-11-13
发明人： HIRAYAMA, Ryu , MURAKAWA Tesshu , TOMITA Miho
摘要： A laminated core (100) has a plurality of legs having an extension direction in a direction perpendicular to a lamination direction of electrical steel sheets and a plurality of yokes having an extension direction in a direction orthogonal to the lamination direction of the electrical steel sheets and the extension direction of the legs, and, in the same position of the electrical steel sheet in the lamination direction, at least a partial region of the legs and at least a partial region of the yokes are configured by the same electrical steel sheet. The electrical steel sheet is disposed such that a first direction of directions of easy magnetization of the electrical steel sheet is along the extension direction of the legs and a second direction of the directions of easy magnetization of the electrical steel sheet is along the extension direction of the yokes.
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公开(公告)号：EP3902122A1
公开(公告)日：2021-10-27
申请号：EP19899774.4
申请日：2019-12-17
发明人： HIRAYAMA, Ryu , TAKEDA, Kazutoshi
摘要： A laminated core includes a plurality of electrical steel sheets stacked on each other, and an adhesion part which is provided between the electrical steel sheets adjacent to each other in a stacking direction and adheres the electrical steel sheets to each other, in which the electrical steel sheet include an annular core back part, and a plurality of tooth parts which extend from the core back part in a radial direction of the core back part and are disposed at intervals in a circumferential direction of the core back part, an adhesion region in which the adhesion part is provided is formed in the core back part of the electrical steel sheet, and the adhesion region extends in a direction along a magnetic flux passing through a region of the electrical steel sheet in contact with the adhesion region.
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公开(公告)号：EP3902110A1
公开(公告)日：2021-10-27
申请号：EP19899180.4
申请日：2019-12-17
IPC分类号： H02K1/18
摘要： A laminated core includes a plurality of electrical steel sheets stacked on each other, wherein, among the plurality of electrical steel sheets, both of the electrical steel sheets located on a first side in a stacking direction and the electrical steel sheets located on a second side in the stacking direction are fastened to each other but are not adhered to each other, and the electrical steel sheets located in a center in the stacking direction are adhered to each other but are not fastened to each other.
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公开(公告)号：EP3902109A1
公开(公告)日：2021-10-27
申请号：EP19899146.5
申请日：2019-12-17
发明人： OHSUGI, Yasuo , HIRAYAMA, Ryu , TAKEDA, Kazutoshi
IPC分类号： H02K1/18
摘要： A laminated core includes a plurality of electrical steel sheets stacked in a thickness direction, each of the electrical steel sheets includes an annular core back part; a plurality of fastening parts are provided in the core back part at intervals in a circumferential direction; an adhesion region is formed on an outer circumferential side from the fastening parts in the core back part; and a non-adhesion region is formed on an inner circumferential side from the fastening parts in the core back part.
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公开(公告)号：EP3902104A1
公开(公告)日：2021-10-27
申请号：EP19898200.1
申请日：2019-12-17
IPC分类号： H02K1/18 , H01F27/24 , H01F27/245
摘要： A laminated core includes a plurality of electrical steel sheets stacked on each other, and an adhesion part provided between electrical steel sheets adjacent to each other in a stacking direction and configured to adhere the electrical steel sheets to each other, wherein the adhesion part partially adheres the electrical steel sheets adjacent to each other in the stacking direction, and the adhesion parts adjacent to each other in the stacking direction have different arrangement regions in a plan view seen in the stacking direction.
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公开(公告)号：EP4439928A1
公开(公告)日：2024-10-02
申请号：EP22898280.7
申请日：2022-10-19
IPC分类号： H02K1/18
CPC分类号： H02K1/18
摘要： An electrical steel sheet includes an annular body. At least one of a plurality of adhesion layers (41) is a first adhesion layer. In one of two electrical steel sheets sandwiching the first adhesion layer in a stacking direction, when an imaginary axis intersecting with a central axis of the annular body and extending in an easy-magnetization direction is defined as an L-axis, an imaginary axis intersecting with the central axis and intersecting with the L-axis is defined as a C-axis, and the electrical steel sheet is partitioned into a plurality of sections (S) in a circumferential direction of the annular body by the L-axis and the C-axis, at least one of the plurality of sections (S) is a first section. In the first section, an area of the first adhesion layer in a first portion (P1) of the electrical steel sheet where a main magnetic flux is generated in the L-axis direction is smaller than an area of the first adhesion layer in a second portion (P2) of the electrical steel sheet where the main magnetic flux is generated in the C-axis direction.
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10.发明公开
公开(公告)号：EP4325534A1
公开(公告)日：2024-02-21
申请号：EP22788183.6
申请日：2022-04-13
发明人： TAKEDA, Kazutoshi , TAKATANI, Shinsuke , HIRAYAMA, Ryu , FUKUCHI, Minako , IWASE, Yoshiaki , NIWA, Makoto , HIRAKAWA, Makoto
摘要： This bonded and stacked core manufacturing method is a method for manufacturing a bonded and stacked core by performing press working on a strip-shaped steel sheet with a press working oil applied to one surface or both surfaces thereof, applying an anaerobic adhesive and an instantaneous adhesive to one surface of the strip-shaped steel sheet to obtain a plurality of steel sheet components, and stacking and bonding the steel sheet components, in which a curing accelerating layer is formed by applying an anaerobic adhesive curing accelerator and an instantaneous adhesive curing accelerator to one surface or both surfaces of the strip-shaped steel sheet before the press working oil is applied, and drying the adhesive curing accelerator and the instantaneous adhesive curing accelerator.
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