-
公开(公告)号：US12021412B2
公开(公告)日：2024-06-25
申请号：US18088941
申请日：2022-12-27
发明人： Tatsuya Saito , Tomoyuki Ueno
CPC分类号： H02K1/148 , H02K1/02 , H02K15/022 , H02K21/24
摘要： A core piece that is circularly arranged to construct a stator core of an axial gap type rotary electric machine includes: a first member in a column form extending in an axial direction of the stator core; a second member in a plate form disposed on a first end side of the axial direction in the first member; and a third member in a plate form disposed on a second end side of the axial direction in the first member, the first member has a peripheral surface connecting with the second member and the third member, the second member has a protruding portion projecting outwardly from the peripheral surface of the first member, the third member has a protruding portion projecting outwardly from the peripheral surface of the first member, and the first member, the second member, and the third member are configured by an integrally molded green compact.
-
公开(公告)号：US11167517B2
公开(公告)日：2021-11-09
申请号：US15754044
申请日：2016-08-22
摘要： A powder compaction mold includes a die and upper and lower punches configured to fit into the die and is configured to compress a powder between the upper and lower punches to manufacture a powder compact. Of the members forming the powder compaction mold, at least one of two members in sliding contact with each other has therein a vent passage through which gas is vented from a filling space for the powder surrounded by the die and the lower punch to an outside of the powder compaction mold. The vent passage has a gas intake port that is open to a clearance section formed between the two members and connecting to the filling space.
-
公开(公告)号：US10280488B2
公开(公告)日：2019-05-07
申请号：US15741916
申请日：2017-02-02
发明人： Tomoyuki Ueno , Koji Yamada , Kazuya Takizawa , Yuki Adachi , Tetsuya Hayashi
IPC分类号： B22F1/02 , C22C1/00 , C22C33/02 , B22F1/00 , C03C8/02 , B24D18/00 , C22C38/04 , C03C3/091 , C22C32/00 , C22C38/00 , B22F9/04
摘要： An iron-based powder for powder metallurgy includes an iron-based powder and a composite oxide powder, and the composite oxide contains, by mass, from 15% to 30% Si, from 9% to 18% Al, from 3% to 6% B, from 0.5% to 3% Mg, from 2% to 6% Ca, from 0.01% to 1% Sr, and from 45% to 55% O.
-
公开(公告)号：US11888351B2
公开(公告)日：2024-01-30
申请号：US17278333
申请日：2019-09-05
发明人： Tatsuya Saito , Yuichi Nakamura , Tomoyuki Ueno
摘要： A core that is used in an axial-gap rotary electric machine and that includes a body, and frame-shaped flange portions. The body includes an annular yoke and columnar teeth that are arranged in a circumferential direction of the yoke. The flange portions are fixed to end portions of the respective teeth. The yoke and the teeth are composed of a single powder compact. Each of the flange portions is composed of a powder compact that has a through-hole. The end portion of each of the teeth is inserted in the through-hole, and an end surface of each of the teeth is exposed from the through-hole. A ratio of an area of the end surface of each of the teeth to an area within an outer circumferential edge of each of the flange portions is 7.5% or more in a plan view in an axial direction of the yoke.
-
公开(公告)号：US11888347B2
公开(公告)日：2024-01-30
申请号：US17281992
申请日：2019-10-17
发明人： Tatsuya Saito , Tomoyuki Ueno
摘要： A core for use in an axial-gap rotary electric machine is annular and includes a plurality of core pieces into which the core is divided in a circumferential direction. Each core piece includes a yoke portion and a tooth portion that is formed integrally with the yoke portion and that projects from the yoke portion in an axial direction. Each yoke portion includes a plurality of protrusions provided on one side surface connected to the yoke portion of an adjacent one of the core pieces, and a plurality of recesses provided on other side surface connected to the yoke portion of another adjacent one of the core pieces, the recesses corresponding to the protrusions. An interval between the protrusions is 80% or less of a length of the one side surface of the yoke portion, the length being a direct distance between inner and outer peripheries of the yoke portion.
-
公开(公告)号：US11794244B2
公开(公告)日：2023-10-24
申请号：US16643666
申请日：2018-08-10
发明人： Tatsuya Saito , Asako Watanabe , Tomoyuki Ueno , Hijiri Tsuruta
CPC分类号： B22F1/105 , B22F1/16 , B22F3/02 , B22F3/24 , H01F1/24 , H01F27/255 , B22F2003/248 , B22F2201/03 , B22F2301/35 , C22C38/02 , C22C38/06 , B22F2998/10 , B22F1/16 , B22F3/02 , B22F3/10
摘要： A method for manufacturing a dust core, including: a step of preparing a raw material powder including a coated pure iron powder composed of a plurality of pure iron particles each having an insulating coating layer, a coated iron alloy powder composed of a plurality of iron alloy particles each having an insulating coating layer, and a metal soap;
a step of manufacturing a molded article by performing a compression molding of the raw material powder filled in a mold; and a step of performing a heat treatment of the molded article to eliminate distortions in the coated pure iron powder and the coated iron alloy powder, wherein a difference Tm−Td between a melting point Tm of the metal soap and a temperature Td of the mold in the step of manufacturing the molded article is greater than or equal to 90° C.-
公开(公告)号：US11591681B2
公开(公告)日：2023-02-28
申请号：US15534133
申请日：2016-08-30
发明人： Tomoyuki Ueno , Koji Yamada , Kazuya Takizawa , Yuki Adachi , Tetsuya Hayashi
摘要： An iron-based sintered body includes a metal matrix and complex oxide particles contained in the metal matrix. When a main viewing field having an area of 176 μm×226 μm is taken on a cross section of the iron-based sintered body and divided into a 5×5 array of 25 viewing fields each having an area of 35.2 μm×45.2 μm, the complex oxide particles have an average equivalent circle diameter of from 0.3 μm to 2.5 μm inclusive, and a value obtained by dividing the total area of the 25 viewing fields by the total number of complex oxide particles present in the 25 viewing fields is from 10 μm2/particle to 1,000 μm2/particle inclusive. The number of viewing fields in which no complex oxide particle is present is 4 or less out of the 25 viewing fields.
-
公开(公告)号：USD841703S1
公开(公告)日：2019-02-26
申请号：US29584908
申请日：2016-11-18
设计人： Naoto Igarashi , Shinichi Hirono , Tomoyuki Ueno , Asako Watanabe
-
9.发明申请公开(公告)号：US20180202029A1
公开(公告)日：2018-07-19
申请号：US15741916
申请日：2017-02-02
发明人： Tomoyuki Ueno , Koji Yamada , Kazuya Takizawa , Yuki Adachi , Tetsuya Hayashi
CPC分类号： C22C33/02 , B22F1/0011 , B22F9/04 , B22F2009/044 , B22F2301/35 , B22F2302/35 , B22F2304/10 , B22F2998/10 , B22F2999/00 , B24D18/0009 , C03C3/091 , C03C8/02 , C03C2214/08 , C22C32/0026 , C22C33/0228 , C22C38/00 , C22C38/04 , B22F3/02 , B22F3/10 , B22F7/06
摘要： An iron-based powder for powder metallurgy includes an iron-based powder and a composite oxide powder, and the composite oxide contains, by mass, from 15% to 30% Si, from 9% to 18% Al, from 3% to 6% B, from 0.5% to 3% Mg, from 2% to 6% Ca, from 0.01% to 1% Sr, and from 45% to 55% O.
-
公开(公告)号：US11996731B2
公开(公告)日：2024-05-28
申请号：US17285476
申请日：2019-09-05
发明人： Tatsuya Saito , Tomoyuki Ueno , Hijiri Tsuruta , Yuichi Nakamura , Yuka Fukunaga
摘要： A core used in an axial-gap rotating electric device includes an annular back yoke and a plurality of teeth protruding in an axial direction that is perpendicular to a first flat surface of the back yoke. The plurality of teeth are provided on the first flat surface at intervals in a circumferential direction. The back yoke and the teeth are constituted of an integrally-molded powder compact. A first curved section that connects a peripheral surface of each tooth and the first flat surface of the back yoke is provided at a corner between the tooth and the back yoke. The first curved section has a curvature radius ranging between 0.2 mm and 1.5 mm inclusive.
-
-
-
-
-
-
-
-
-
搜索结果
34 条记录 (耗时 0.028 秒)
