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公开(公告)号：US20220285074A1
公开(公告)日：2022-09-08
申请号：US17641103
申请日：2020-09-03
IPC分类号： H01F27/26
摘要： A wound core equipped with a laminated body including plural electrical steel sheets stacked in a ring shape in side view. The laminated body includes plural bent portions, and plural block-shaped portions at positions between adjacent bent portions. At least one bent portion among the plural bent portions is a high stacking factor bent portion, wherein a stacking factor of the electrical steel sheets at the high stacking bent portion is higher than an average stacking factor of the steel sheets at the plural block-shaped portions.
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公开(公告)号：US20220209592A1
公开(公告)日：2022-06-30
申请号：US17606036
申请日：2020-06-22
发明人： Ryu HIRAYAMA , Kazutoshi TAKEDA
IPC分类号： H02K1/18 , H01F3/02 , H01F27/245 , H01F27/26
摘要： What is disclosed is a core block, a plurality thereof constituting a laminated core by being connected in an annular shape, the core block including: a plurality of electrical steel sheet pieces stacked to each other; and an adhesion part which is provided between the electrical steel sheet pieces adjacent in a stacking direction and adheres the electrical steel sheet pieces to each other, in which an adhesion area ratio of the electrical steel sheet piece by the adhesion part is 1% or more and 60% or less.
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公开(公告)号：US20220020521A1
公开(公告)日：2022-01-20
申请号：US17294519
申请日：2019-12-17
发明人： Kazutoshi TAKEDA , Ryu HIRAYAMA
IPC分类号： H01F27/245 , H01F41/02 , H02K15/02 , H02K1/18
摘要： Provided is an adhesively-laminated core for a stator including: a plurality of electrical steel sheets which have phosphate-based insulation coatings on surfaces thereof and are overlapped coaxially with each other; and adhesion parts provided between the respective electrical steel sheets, an average thickness of the insulation coatings is 0.3 μm to 1.2 μm, an average thickness of the adhesion parts is 1.0 μm to 3.0 μm, and in a case where the average thickness of the insulation coating is defined as t1 in a unit of μm, and the average thickness of the adhesion parts is defined as t2 in a unit of μm, the following Equation 1 is satisfied. −4.3×t1+3.6≤t2≤−4.3×t1+6.9 (Equation 1)
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公开(公告)号：US20220014053A1
公开(公告)日：2022-01-13
申请号：US17293961
申请日：2019-12-17
发明人： Kazutoshi TAKEDA , Ryu HIRAYAMA
IPC分类号： H02K1/18
摘要： In an adhesively-laminated core for a stator, a chemical component of each of electrical steel sheets includes 2.5% to 3.9% by mass of Si, an average tensile modulus of elasticity of each of adhesion parts is 2500 MPa to 5000 MPa, and when an average sheet thickness of the each of electrical steel sheets is t1 in units of mm, an average thickness of the each of adhesion parts is t2 in units of μm, and an average value of yield strengths of the each of electrical steel sheets is YP in units of MPa, a condition A of satisfying the following expressions 1, 2, and 3 or a condition B of satisfying the following expressions 3, 4, and 5 or combination thereof is satisfied. 50×t1−12≤t2≤50×t1−6 (expression 1) 0.15≤t1≤0.27 (expression 2) 0.5≤t2≤2.5 (expression 3) 0.025×YP−12≤t2≤0.025×YP−8 (expression 4) 380≤YP≤540 (expression 5)
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公开(公告)号：US20220014052A1
公开(公告)日：2022-01-13
申请号：US17293795
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, 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：US20240209482A1
公开(公告)日：2024-06-27
申请号：US18286681
申请日：2022-04-13
发明人： Kazutoshi TAKEDA , Shinsuke TAKATANI , Ryu HIRAYAMA , Minako FUKUCHI , Yoshiaki IWASE , Makoto NIWA , Makoto HIRAKAWA
CPC分类号： C22C38/02 , C22C38/04 , C22C38/06 , H01F1/14791 , H01F1/18 , H02K15/024 , H02K1/02
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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17.发明公开公开(公告)号：US20240190119A1
公开(公告)日：2024-06-13
申请号：US18286501
申请日：2022-04-13
发明人： Kazutoshi TAKEDA , Shinsuke TAKATANI , Ryu HIRAYAMA , Minako FUKUCHI , Yoshiaki IWASE , Makoto NIWA , Makoto HIRAKAWA
IPC分类号： B32B37/12 , B30B9/28 , B32B7/12 , B32B15/04 , B32B15/18 , B32B37/10 , C09J5/02 , C22C38/02 , C22C38/04 , C22C38/06 , H02K1/02 , H02K15/02
CPC分类号： B32B37/12 , B30B9/28 , B32B7/12 , B32B15/043 , B32B15/18 , B32B37/10 , C09J5/02 , C22C38/02 , C22C38/04 , C22C38/06 , H02K1/02 , H02K15/02 , B32B2309/12 , B32B2311/30 , C22C2202/02
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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18.发明公开公开(公告)号：US20230253140A1
公开(公告)日：2023-08-10
申请号：US18014352
申请日：2021-07-06
发明人： Kazutoshi TAKEDA , Shinsuke TAKATANI , Ryu HIRAYAMA , Yoshiaki IWASE , Makoto NIWA , Masashi YAMADA
IPC分类号： H01F27/26 , C09J133/20 , C09J11/04 , C09J11/06
CPC分类号： H01F27/263 , C09J133/20 , C09J11/04 , C09J11/06 , C09J2400/163
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：US20220028607A1
公开(公告)日：2022-01-27
申请号：US17311425
申请日：2019-12-17
发明人： Ryu HIRAYAMA , Kazutoshi TAKEDA
IPC分类号： H01F41/02 , H02K1/16 , H02K1/18 , H01F27/245
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：US20220020530A1
公开(公告)日：2022-01-20
申请号：US17294955
申请日：2019-12-17
发明人： Ryu HIRAYAMA , Kazutoshi TAKEDA
IPC分类号： H01F41/02 , H02K1/18 , H01F27/245
摘要： A laminated core includes a plurality of electrical steel sheets stacked on each other and coated with an insulation coating on both surfaces thereof, and an adhesion part provided between the electrical steel sheets adjacent to each other in a stacking direction and configured to adhere the electrical steel sheets to each other, wherein an adhesion area ratio of the electrical steel sheet by the adhesion part is 1% or more and 40% or less.
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