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公开(公告)号：US10804026B2
公开(公告)日：2020-10-13
申请号：US15848567
申请日：2017-12-20
Applicant: TDK CORPORATION
Inventor： Yasuhide Yamashita , Katsushi Yasuhara , Chiomi Sato
IPC: H01F27/02 , H01F27/255 , H01F41/04 , H01F3/08 , H01F17/04 , B29C43/14 , H01F41/02 , B29C43/18 , H01F1/36 , H01F3/14 , B29K101/10 , B29K705/00 , B29K505/00
Abstract: A method of manufacturing an inductor element includes preparing an insert member including a winding portion where a conductor is wound in a coil shape. A plurality of preliminary green compacts is obtained by conducting a preliminary compression molding of a granule containing a magnetic powder and a resin at a pressure of 2.5×102 to 1×103 MPa. The insert member and the plurality of preliminary green compacts are integrated so that a joint interface of the plurality of preliminary green compacts is formed intermittently.
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公开(公告)号：US11043320B2
公开(公告)日：2021-06-22
申请号：US15915901
申请日：2018-03-08
Applicant: TDK CORPORATION
Inventor： Masahiro Kamiya , Yasuhide Yamashita , Chiomi Sato , Yousuke Futamata , Ryoma Nakazawa , Takeshi Takahashi , Hiroyuki Ono
Abstract: A dust core includes a metal magnetic material, a resin, and an insulation film. The insulation film contacts with a surface of the metal magnetic material and covers the metal magnetic material. The insulation film includes a first film and a second film. The first film contacts with the surface of the metal magnetic material. The second film contacts with a surface of the first film. A density of the first film is higher than a density of the second film.
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公开(公告)号：US20140307341A1
公开(公告)日：2014-10-16
申请号：US14251307
申请日：2014-04-11
Applicant: TDK CORPORATION
Inventor： Masaru Uno , Kazutomo Imi , Noriyuki Kawano , Kazuhiko Inoue , Masashi Gotoh , Osamu Ohhata , Shintarou Koike , Yasuhide Yamashita
IPC: G02B7/10
CPC classification number: G02B7/08 , G02B13/001
Abstract: A lens holding device includes a movable part having a coil attached to a lens holder holding a lens and includes a magnet part arranged around an outer peripheral side of the movable part so as to face the coil. The lens holding device includes a support part which supports the movable part so as to move relatively and a spring which connects the movable part and the support part resiliently. The magnet part includes a resin and has an alignment part which positions the spring.
Abstract translation: 透镜保持装置包括具有附接到保持透镜的透镜保持器的线圈的可动部分，并且包括围绕可动部分的外周侧布置以面对线圈的磁体部分。 透镜保持装置包括支撑可移动部分以相对移动的支撑部分和弹性地弹性地连接可动部分和支撑部分。 磁体部分包括树脂，并具有定位弹簧的定位部分。
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公开(公告)号：US11651880B2
公开(公告)日：2023-05-16
申请号：US16827950
申请日：2020-03-24
Applicant: TDK CORPORATION
Inventor： Yasuhide Yamashita
IPC: H01F1/20 , H01F1/147 , H01F27/255 , H01F17/04 , H01F41/02
CPC classification number: H01F1/20 , H01F1/14733 , H01F1/14766 , H01F17/04 , H01F27/255 , H01F41/0246 , Y10T428/32
Abstract: A composite particle includes a large particle and binder particles. The large particle has a particle size of 10 μm to 50 μm. The binder particles are attached on the large particle and each have a particle size smaller than that of the large particle.
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公开(公告)号：US10886056B2
公开(公告)日：2021-01-05
申请号：US15967769
申请日：2018-05-01
Applicant: TDK CORPORATION
Inventor： Yasuhide Yamashita , Katsushi Yasuhara , Chiomi Sato
Abstract: An inductor element includes a wire-winding portion and a core portion. In the wire-winding portion, a conductor is wound in a coil shape. The core portion surrounds the wire-winding portion and contains a magnetic powder and a resin. The wire-winding portion includes an inner circumferential surface. A winding-wire inner circumferential neighboring region is a region of the core portion within a distance from the inner circumferential surface toward a winding axis of the wire-winding portion. An inner-core central region is a region of the core portion within a distance from the winding axis center toward an existing region of the wire-winding portion in an outward direction perpendicular to the winding axis center. Sα−Sβ1≥5.0% is satisfied, where Sα(%) and Sβ1(%) are respectively an area ratio of a magnetic powder in the inner-core central region and the winding-wire inner circumferential neighboring region.
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Patent Agency Ranking
公开(公告)号：US09465230B2
公开(公告)日：2016-10-11
申请号：US14251378
申请日：2014-04-11
Applicant: TDK Corporation
Inventor： Masaru Uno , Kazutomo Imi , Noriyuki Kawano , Kazuhiko Inoue , Masashi Gotoh , Osamu Ohhata , Shintarou Koike , Yasuhide Yamashita
CPC classification number: G02B27/646 , G02B7/08 , G03B3/10 , G03B2205/0069 , H04N5/2328
Abstract: A lens holding unit is held so that it can relatively move with respect to a base part to a direction vertical to an optical axis direction. The lens holding unit has a lens holder, a magnet part, and a spring. The lens holder has a first coil. The magnet part has a first magnet part which includes a first face facing to the first coil and a second magnet part which includes a second face vertical to the first face and constitutes a magnetic domain different from that of the first magnet part. These first magnet part and second magnet part are integrated.
Abstract translation: 保持透镜保持单元，使得其能够相对于基部相对于与光轴方向垂直的方向相对移动。 透镜保持单元具有透镜架，磁体部和弹簧。 透镜架具有第一线圈。 磁体部分具有第一磁体部分，其包括面向第一线圈的第一面和第二磁体部分，其包括垂直于第一面的第二面，并且构成与第一磁体部不同的磁畴。 这些第一磁体部分和第二磁体部分被集成。
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公开(公告)号：US09395510B2
公开(公告)日：2016-07-19
申请号：US14251307
申请日：2014-04-11
Applicant: TDK CORPORATION
Inventor： Masaru Uno , Kazutomo Imi , Noriyuki Kawano , Kazuhiko Inoue , Masashi Gotoh , Osamu Ohhata , Shintarou Koike , Yasuhide Yamashita
CPC classification number: G02B7/08 , G02B13/001
Abstract: A lens holding device includes a movable part having a coil attached to a lens holder holding a lens and includes a magnet part arranged around an outer peripheral side of the movable part so as to face the coil. The lens holding device includes a support part which supports the movable part so as to move relatively and a spring which connects the movable part and the support part resiliently. The magnet part includes a resin and has an alignment part which positions the spring.
Abstract translation: 透镜保持装置包括具有附接到保持透镜的透镜保持器的线圈的可动部分，并且包括围绕可动部分的外周侧布置以面对线圈的磁体部分。 透镜保持装置包括支撑可移动部分以相对移动的支撑部分和弹性地弹性地连接可动部分和支撑部分。 磁体部分包括树脂，并具有定位弹簧的定位部分。
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公开(公告)号：US11783988B2
公开(公告)日：2023-10-10
申请号：US17017987
申请日：2020-09-11
Applicant: TDK CORPORATION
Inventor： Yasuhide Yamashita , Katsushi Yasuhara , Chiomi Sato
IPC: H01F41/04 , H01F41/02 , H01F3/04 , H01L21/56 , H01F27/255 , H01F27/02 , H01F3/08 , H01F17/04 , B29C43/14 , B29C43/18 , H01F1/36 , H01F3/14 , B29K101/10 , B29K705/00 , B29K505/00
CPC classification number: H01F27/255 , B29C43/14 , H01F3/08 , H01F17/043 , H01F27/02 , H01F41/0246 , H01F41/04 , B29C43/18 , B29C2043/182 , B29K2101/10 , B29K2505/00 , B29K2705/00 , B29K2995/0008 , H01F1/36 , H01F3/14 , H01F2017/046 , H01F2017/048 , H01L21/56
Abstract: A method of manufacturing an inductor element includes preparing an insert member including a winding portion where a conductor is wound in a coil shape. A plurality of preliminary green compacts is obtained by conducting a preliminary compression molding of a granule containing a magnetic powder and a resin at a pressure of 2.5×102 to 1×103 MPa. The insert member and the plurality of preliminary green compacts are integrated so that a joint interface of the plurality of preliminary green compacts is formed intermittently.
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公开(公告)号：US11605490B2
公开(公告)日：2023-03-14
申请号：US16841951
申请日：2020-04-07
Applicant: TDK CORPORATION
Inventor： Yasuhide Yamashita , Chiomi Sato
Abstract: The present invention is an inductor element having a conductor wound in a coil form, and a core part surrounding the coil and including a magnetic powder and a resin. The core part includes a top board part and a bottom board part respectively covering both ends of the coil, and an outer circumference part positioned at an outer circumference side of the coil, and a resin content of the outer circumference part is larger than a resin content of the top board part and also larger than a resin content of the bottom board part.
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公开(公告)号：US10984941B2
公开(公告)日：2021-04-20
申请号：US15968036
申请日：2018-05-01
Applicant: TDK CORPORATION
Inventor： Yasuhide Yamashita , Katsushi Yasuhara , Chiomi Sato , Syota Goto
IPC: H01F27/255 , H01F17/00 , B29C43/18 , H01F27/02 , H01F41/04 , B29C43/14 , H01F17/04 , H01F1/36 , B29L31/34 , B29K705/00
Abstract: An inductor element includes a wire-winding portion and a core portion. In the wire-winding portion, a conductor is wound in a coil shape. The core portion surrounds the wire-winding portion and contains a magnetic powder and a resin. An inner-core central region is a region of the core portion within a distance from a winding axis center of the wire-winding portion toward an existing region of the wire-winding portion in an outward direction perpendicular to the winding axis center. A top-plate central region is a region of the core portion within a distance from the winding axis center toward a no-existing region of the wire-winding portion in the outward direction. Sα−Sβ≥−2% is satisfied, where Sα (%) and Sβ (%) are respectively an area ratio of the magnetic powder in the inner-core central region and the top-plate central region.
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