WO2022250426A1 - 코어 구조체 및 이를 포함하는 코일 조립체 - Google Patents
코어 구조체 및 이를 포함하는 코일 조립체 Download PDFInfo
- Publication number
- WO2022250426A1 WO2022250426A1 PCT/KR2022/007370 KR2022007370W WO2022250426A1 WO 2022250426 A1 WO2022250426 A1 WO 2022250426A1 KR 2022007370 W KR2022007370 W KR 2022007370W WO 2022250426 A1 WO2022250426 A1 WO 2022250426A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- guide
- magnetic body
- core structure
- insulating layer
- height
- Prior art date
Links
- 239000000696 magnetic material Substances 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims description 13
- 239000011810 insulating material Substances 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 239000000843 powder Substances 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000011354 acetal resin Substances 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/06—Fixed inductances of the signal type with magnetic core with core substantially closed in itself, e.g. toroid
- H01F17/062—Toroidal core with turns of coil around it
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/25—Magnetic cores made from strips or ribbons
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2895—Windings disposed upon ring cores
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
Definitions
- the present invention relates to a core structure and a coil assembly including the same.
- home appliances such as TVs have been developed in a wall mount method in order to minimize the degree of protrusion from the wall. Accordingly, electronic components constituting a part of the TV have been continuously miniaturized and reduced in profile, and in particular, demand for components having a thickness of 1 cm or less is increasing to meet related standards.
- the case member for sealing the core has a thickness of approximately 1 mm or more, it has been pointed out as an impediment to thinning of electronic parts, such as exceeding 20% of the total thickness of coil parts.
- the present invention has been devised in view of the above points, and an object thereof is to provide a core structure capable of thinning a coil part.
- another object of the present invention is to provide a core structure capable of enhancing withstand voltage characteristics of a coil component.
- the present invention provides a core structure in which a coil is wound, a magnetic body formed in a ring shape and made of a magnetic material; a first guide formed in a ring shape to come into contact with an inner circumferential surface of the magnetic body and made of an insulating material; and an insulating layer coating at least a portion of the magnetic body and the first guide to insulate the magnetic body.
- the magnetic material may be formed to have a first height
- the first guide may be formed to have a second height greater than or equal to the first height
- the first height and the second height may be the same.
- a height at which the first guide protrudes in a height direction from the magnetic body may be smaller than a thickness of the first guide in a width direction.
- the magnetic material may be completely covered so that the inner circumferential surface is not exposed to the outside by the first guide.
- the magnetic body may further include a second guide formed in a ring shape to come into contact with an outer circumferential surface of the magnetic body and made of an insulating material, and the insulating layer may coat at least a portion of the second guide.
- each of the first guide and the second guide may be formed to have a height higher than that of the magnetic body, and at least a portion of the insulating layer may be disposed in a ring-shaped space formed between the first guide and the second guide.
- the magnetic material may be formed by winding an amorphous ribbon sheet in the shape of a plate material.
- the present invention is a core structure in which a coil is wound, formed in a ring shape, a magnetic body made of a magnetic material; a second guide formed in a ring shape to come into contact with an outer circumferential surface of the magnetic body and made of an insulating material; and an insulating layer coating at least a portion of the magnetic body and the second guide to insulate the magnetic body.
- the present invention the above-described core structure; and a coil wound around the core structure.
- the present invention it is possible to minimize the vertical height of the core structure by disposing the insulating layer instead of the case member on the top and bottom of the magnetic body.
- the present invention can enhance the withstand voltage characteristics of the core structure by arranging guides inside and outside the magnetic body while achieving a thin core structure.
- FIG. 1 is a view showing a coil assembly according to an embodiment of the present invention
- FIG. 2 is a view showing the core structure in the coil assembly of FIG. 1 by being separated;
- Figure 3 is a cross-sectional view of Figure 1;
- FIG. 4 is a view showing a core structure included in a coil assembly according to another embodiment of the present invention.
- FIG. 5 is a cross-sectional view of a coil assembly according to another embodiment of the present invention.
- FIG. 6 is an explanatory diagram for explaining a case in which an insulating layer is formed without a guide
- FIG. 8 is an enlarged view of a portion corresponding to portion A of FIG. 3 in FIG. 5 .
- the core structure 100 is, for example, in a coil assembly 200 in which a coil is wound, such as a choke coil, a transformer, a motor, or an inductor, a toroid Alternatively, it may be a structure formed in a ring shape to support the winding of the coil.
- a ring shape is defined as including the torus shape.
- the core structure 100 according to an embodiment of the present invention can be thinned in overall size while insulating the magnetic body 110 by coating the outer surface through the insulating layer 140 .
- the core structure 100 according to an embodiment of the present invention can strengthen the withstand voltage despite the introduction of the insulating layer 140 through the guides 120 and 130 disposed inside and outside the magnetic body 110 there are advantages.
- the core structure 100 may include a magnetic body 110, guides 120 and 130 and an insulating layer 140 as shown in FIGS. 2 to 5 .
- the core structure 100 may include both the first guide 120 and the second guide 130, including only some of them. make it clear that you can This will be described in detail through the following description.
- the magnetic body 110 may be formed of a magnetic material.
- the coil assembly 200 may remove noise or excite an induced current when applied to an EMI filter, for example, by having magnetic properties.
- the magnetic body 110 may be formed of at least one magnetic material selected from the group consisting of an amorphous alloy, an alloy containing nanocrystalline grains, ferrite, a silicon steel plate, sanddust, and permalloy.
- the magnetic body 110 is manufactured in the form of a powder core, thin strip, or plate in the form of forming a desired shape after mixing a master alloy formed of powder or a master alloy made of a ribbon with a binder and mixing the powder obtained by ball milling. It may be a wound core manufactured by winding an alloy, or a laminated magnetic core manufactured by laminating an alloy manufactured in a thin strip or plate shape.
- the magnetic body 110 may be formed in a ring shape having a hollow so that a coil may pass therethrough and be wound.
- the ring-shaped magnetic material 110 may have an inner circumferential surface 111 and an outer circumferential surface 112 extending in the circumferential direction on the inside and outside, respectively.
- the magnetic material 110 is a part where the inner circumferential surface 111 and the outer circumferential surface 112 are bent or bent at the upper and lower ends of the inner circumferential surface 111 and the outer circumferential surface 112, respectively, and the inner corner portion 113 and the outer corner portion ( 114) may be provided.
- the inner corner portion 113 and the outer corner portion 114 may be bent while forming a predetermined angle (right angle in the case of FIG. 3), as shown in FIG. 3, respectively, although not shown in the drawing, a predetermined curvature
- the branch may be formed in a curved surface.
- the magnetic body 110 is formed by winding the amorphous alloy ribbon a plurality of times, as shown in FIG. ) is formed, it is possible to weaken the withstand voltage of the coil assembly, which will be described later through a description related to the guides 120 and 130.
- the core structure 100 may include a first guide 120 disposed inside the magnetic body 110 described above.
- the first guide 120 may be formed of an insulating material to insulate the magnetic body 110 adjacent thereto from the outside. That is, the first guide 120 may cover and insulate the magnetic material 110 together with the insulating layer 140 to be described later.
- the first guide 120 may be formed of a mixture of an organic material and an inorganic material, or an organic material, and may be formed of one or more kinds selected from a thermoplastic resin, a thermosetting resin, and rubber. can be formed
- the material of the first guide 120 of the core structure 100 according to an embodiment of the present invention is not limited thereto, and any material may be applied as long as it has insulating properties.
- the first guide 120 may be formed in a ring shape to contact the inner circumferential surface 111 of the magnetic body 110, as shown in FIGS. 2 and 3 .
- the first guide 120 may be formed to have a second height H2 equal to or greater than the first height H1 of the magnetic body 110 . Through this, the first guide 120 may entirely cover the inner circumferential surface 111 of the magnetic body 110 .
- the first guide 120 may have a height H2 higher than the height H1 of the magnetic body 110, as shown in FIGS. 4 and 5. have.
- the inner corner portion 113 which may be relatively vulnerable to external force, can be more stably protected. This will be described through a description related to the function of the first guide 120 .
- the first guide 120 is disposed in a form in close contact with the inner circumferential surface 111 of the magnetic material 110 so that the inner circumferential surface 111 is not exposed to the outside.
- the thickness L of the first guide 120 in the horizontal direction may be thinner than the thickness of the magnetic body 110 and thicker than the thickness of the insulating layer 140 to be described later.
- the first guide 120 may have a thickness of about 1 mm, but the present invention is not limited thereto, and may be formed thicker or thinner than this according to design.
- the core structure 100 may include a second guide 130 disposed outside the magnetic body 110 in addition to the first guide 120 described above. .
- the second guide 130 may be formed of an insulating material to insulate the magnetic body 110, and may be formed in a ring shape to contact the outer circumferential surface 112 of the magnetic body 110.
- the second guide 130 is also formed to have a second height H2 equal to or greater than the first height H1 of the magnetic body 110 as in the first guide 120, thereby covering the outer circumferential surface of the magnetic body 110 as a whole. can do.
- the second guide 130 differs from the first guide 120 only in terms of the position in which it is disposed, and generally has the same or similar structure and function as the first guide 120. It will be replaced with the description of (120).
- the first guide 120 and the second guide 130 when the coil 150 is wound around the core structure 100, stress is concentrated on the corner portions 113 and 114 of the coil assembly 200. A weakening of withstand voltage can be prevented, and a related description will be provided after the description of the insulating layer 140 is completed.
- the core structure 100 may include an insulating layer 140 coating the magnetic body 110 , the first guide 120 and the second guide 130 .
- the insulating layer 140 serves to insulate the magnetic body 110 together with the guides 120 and 130, and may be formed of an insulating material.
- the insulating layer 140 is formed by forming a thin film on the outer surfaces of the magnetic body 110, the first guide 120 and the second guide 130, as shown in 3 in the drawing, so that the magnetic body 110 ) can be blocked from being energized with the coil 150 side.
- the insulating layer 140 is preferably formed of an insulating material having hardness or abrasion resistance sufficient to withstand an external force during the winding process of the coil 150 .
- the insulating layer 140 may be an insulating rubber material such as silicone rubber, fluororubber, or butadiene rubber, silicone, polyethylene, polypropylene, polyester, polyamide, fluororesin, or polyamide.
- insulating resin material such as an acetal resin type, etc. can be used.
- the insulating layer 140 may include a liquid material such as enamel, varnish, or epoxy, and in this case, the magnetic body 110, the first guide 120 or the second guide 130 by a spray coating method can be applied to the outer surface of
- the thickness of the insulating layer 140 may be smaller than the thickness of the first guide 120 and the second guide 130.
- the core structure 100 according to an embodiment of the present invention, the top and bottom of the magnetic body 110, respectively guides (120, 130) and the cover portion (not shown) and the bottom portion (not shown) formed of the same material This is because, instead of covering, the thickness of the entire core structure 100 is reduced by forming an insulating layer 140 having a relatively thin thickness.
- the core structure 100 according to an embodiment of the present invention can achieve thinning of the coil assembly 200 .
- the insulating layer 140 may be formed within 0.2 mm as an illustrative example.
- the thickness of the insulating layer 140 is not limited thereto, and may have a greater thickness than this, if necessary.
- the insulating layer 140 entirely covers the outer surfaces of the first guide 120 and the second guide 130 in a state in which they are disposed on the magnetic body 110 . It can be cured after being applied. Through this, the magnetic material 110 may maintain an electrically insulated state from the coil 150 wound on the outside of the insulating layer 140 .
- the ring-shaped space S may be formed as described above.
- the insulating layer 140 may fill the ring-shaped space (S).
- the insulating layer 140 is filled only in the ring-shaped space S to minimize the height of the core structure 100 in the vertical direction, or the ring-shaped space (S) as shown in FIG. 5 to form a more stable insulation state ( S) may be disposed so as to entirely surround the first guide 120 and/or the second guide 130, including.
- the first guide 120 and the second guide 130 can prevent stress from being concentrated on the corner portions 113 and 114 when the coil is wound around the core structure 100 .
- the bent or curved portion may have a relatively thin insulating layer 140 due to their structural characteristics.
- the coil assembly 200 when the coil assembly 200 is formed using the core structure in which the guides 120 and 130 are absent, as the stress is concentrated on the corner portions 113 and 114 that are already weak due to the relatively thin formation, the There is a high possibility that the insulating layer 140 covering the corners 113 and 114 is easily worn or peeled off. As a result, withstand voltage characteristics of the coil assembly 200 may be greatly weakened.
- the insulating layer 140 of sufficient thickness may be formed even in the region adjacent to the corner portions 113 and 114 of the magnetic body 110.
- the stress (F) generated when winding the coil 150 is the guide 120 instead of the corner portions 113 and 114 of the magnetic body 110 130), it is possible to solve the problem of peeling of the insulating layer 140 formed on the corner portions 113 and 114 of the magnetic body 110 as described above.
- the protection effect of the magnetic body 110 by the guides 120 and 130 is amorphous compared to the case where the magnetic body 110 can be formed by including curved corner portions 113 and 114, such as a ferrite magnetic body. It may be more effective in a magnetic body formed by winding an alloy ribbon many times.
- the coil assembly 200 when the height H2 of the first guide 120 is formed higher than the height H1 of the magnetic body 110, the coil assembly 200 The withstand voltage characteristic can be further strengthened.
- the first guide 120 since the first guide 120 functions as a wall, the corners 113 and 114 of the magnetic body 110 can be completely protected.
- a thicker insulating layer 140 may be formed in the upper or lower region of the magnetic body 110 due to the height H3 of which the first guide 120 protrudes from the magnetic body 110, thereby The withstand voltage characteristic can be further strengthened.
- the core structure 100 It has the advantage of being able to protect the corners 113 and 114 of the magnetic body 110 thickly while being able to reduce the thickness in the height direction.
- the core structure 100 according to an embodiment of the present invention has been described as an example that is formed including both the first guide 120 and the second guide 130, but the present invention is not limited thereto not.
- the core structure 100 may protect the magnetic body 110 by providing only one of the first guide 120 and the second guide 130 as needed.
- stress may be more concentrated on either the outer corner portion 114 or the inner corner portion 113.
- the process can be simplified and materials can be saved by arranging the guides only on one side of the insulating layer 140 that is likely to be peeled off.
- the core structure 100 has a thin insulating layer on the top and bottom of the magnetic body 110 instead of a box-shaped case member covering all the vertical and horizontal directions of the magnetic body 110. It is possible to minimize the height of the core structure by forming. At this time, the core structure 100 according to an embodiment of the present invention complements some of the weak parts that may occur when the magnetic body 110 is insulated only with the insulating layer 140 by arranging the unique guides 120 and 130. By doing so, thinning and durability improvement can be achieved at the same time.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coils Or Transformers For Communication (AREA)
- Insulating Of Coils (AREA)
Abstract
Description
Claims (10)
- 코일이 권선되는 코어 구조체에 있어서,링 형상으로 형성되며, 자성 재질로 이루어진 자성체;상기 자성체의 내주면에 접하도록 링 형상으로 형성되며, 절연성 재질로 이루어진 제1 가이드; 및상기 자성체를 절연시키도록 상기 자성체 및 상기 제1 가이드의 적어도 일부를 코팅하는 절연층;을 포함하는 코어 구조체.
- 제1 항에 있어서,상기 자성체는 제1 높이를 갖도록 형성되며, 상기 제1 가이드는 상기 제1 높이 이상인 제2 높이를 갖도록 형성되는 코어 구조체.
- 제2 항에 있어서,상기 제1 높이와 상기 제2 높이는 동일한 코어 구조체.
- 제2 항에 있어서,상기 제1 가이드가 상기 자성체로부터 높이 방향으로 돌출되는 높이는 상기 제1 가이드의 폭 방향 두께 보다 작은 코어 구조체.
- 제1 항에 있어서,상기 자성체는 상기 제1 가이드에 의해 상기 내주면이 외부로 노출되지 않도록 완전히 커버되는 코어 구조체.
- 제1 항에 있어서,상기 자성체의 외주면에 접하도록 링 형상으로 형성되며, 절연성 재질로 이루어진 제2 가이드를 더 포함하고,상기 절연층은 상기 제2 가이드의 적어도 일부를 코팅하는 코어 구조체.
- 제6 항에 있어서,상기 제1 가이드와 상기 제2 가이드는 각각 상기 자성체 보다 높은 높이를 갖도록 형성되고,상기 제1 가이드와 상기 제2 가이드 사이에 형성되는 링형 공간에 상기 절연층의 적어도 일부가 배치되는 코어 구조체.
- 제1 항에 있어서,상기 자성체는 판재 형상의 비정질 리본 시트를 권취하여 형성되는 코어 구조체.
- 코일이 권선되는 코어 구조체에 있어서,링 형상으로 형성되며, 자성 재질로 이루어진 자성체;상기 자성체의 외주면에 접하도록 링 형상으로 형성되며, 절연성 재질로 이루어진 제2 가이드; 및상기 자성체를 절연시키도록 상기 자성체 및 상기 제2 가이드의 적어도 일부를 코팅하는 절연층;을 포함하는 코어 구조체.
- 제1 항 내지 제9 항 중 어느 한 항에 따른 코어 구조체; 및 상기 코어 구조체에 권선되는 코일;을 포함하는 코일 조립체.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2023572842A JP2024520438A (ja) | 2021-05-25 | 2022-05-24 | コア構造体およびこれを含むコイル組立体 |
US18/563,201 US20240274348A1 (en) | 2021-05-25 | 2022-05-24 | Core structure and coil assembly comprising the same |
CN202280036664.6A CN117355912A (zh) | 2021-05-25 | 2022-05-24 | 芯结构体及包括其的线圈组件 |
Applications Claiming Priority (2)
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KR10-2021-0066771 | 2021-05-25 | ||
KR1020210066771A KR102673199B1 (ko) | 2021-05-25 | 2021-05-25 | 코어 구조체 및 이를 포함하는 코일 조립체 |
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WO2022250426A1 true WO2022250426A1 (ko) | 2022-12-01 |
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PCT/KR2022/007370 WO2022250426A1 (ko) | 2021-05-25 | 2022-05-24 | 코어 구조체 및 이를 포함하는 코일 조립체 |
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US (1) | US20240274348A1 (ko) |
JP (1) | JP2024520438A (ko) |
KR (1) | KR102673199B1 (ko) |
CN (1) | CN117355912A (ko) |
WO (1) | WO2022250426A1 (ko) |
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JP2002057040A (ja) * | 2000-08-09 | 2002-02-22 | Ushio Inc | 巻線機器および巻線機器を用いた高電圧パルス発生回路 |
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KR101870149B1 (ko) * | 2017-08-22 | 2018-06-25 | 박종원 | 일체형 구조를 갖는 보빈용 코어 커버 |
KR20200145816A (ko) * | 2017-12-29 | 2020-12-30 | 엘지이노텍 주식회사 | 자성코어, 인덕터 및 이를 포함하는 emi 필터 |
Family Cites Families (1)
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KR102569683B1 (ko) * | 2016-12-20 | 2023-08-24 | 엘지이노텍 주식회사 | 자성코어, 인덕터 및 이를 포함하는 emi 필터 |
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2021
- 2021-05-25 KR KR1020210066771A patent/KR102673199B1/ko active IP Right Grant
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2022
- 2022-05-24 US US18/563,201 patent/US20240274348A1/en active Pending
- 2022-05-24 JP JP2023572842A patent/JP2024520438A/ja active Pending
- 2022-05-24 CN CN202280036664.6A patent/CN117355912A/zh active Pending
- 2022-05-24 WO PCT/KR2022/007370 patent/WO2022250426A1/ko active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2002057040A (ja) * | 2000-08-09 | 2002-02-22 | Ushio Inc | 巻線機器および巻線機器を用いた高電圧パルス発生回路 |
JP2008124433A (ja) * | 2006-10-20 | 2008-05-29 | Meidensha Corp | パルス電源用巻線機器及びパルス電源 |
JP2008243985A (ja) * | 2007-03-26 | 2008-10-09 | Nitta Ind Corp | 電力伝達装置のコア体 |
KR101870149B1 (ko) * | 2017-08-22 | 2018-06-25 | 박종원 | 일체형 구조를 갖는 보빈용 코어 커버 |
KR20200145816A (ko) * | 2017-12-29 | 2020-12-30 | 엘지이노텍 주식회사 | 자성코어, 인덕터 및 이를 포함하는 emi 필터 |
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KR102673199B1 (ko) | 2024-06-07 |
JP2024520438A (ja) | 2024-05-24 |
CN117355912A (zh) | 2024-01-05 |
KR20220159012A (ko) | 2022-12-02 |
US20240274348A1 (en) | 2024-08-15 |
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