TWI660382B - Coupled inductor structure and a method for manufacturing the sam - Google Patents
Coupled inductor structure and a method for manufacturing the sam Download PDFInfo
- Publication number
- TWI660382B TWI660382B TW107123927A TW107123927A TWI660382B TW I660382 B TWI660382 B TW I660382B TW 107123927 A TW107123927 A TW 107123927A TW 107123927 A TW107123927 A TW 107123927A TW I660382 B TWI660382 B TW I660382B
- Authority
- TW
- Taiwan
- Prior art keywords
- coil
- electrode portion
- upper electrode
- lower electrode
- turns
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 title claims description 5
- 239000000696 magnetic material Substances 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 238000004804 winding Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims 1
- 238000009826 distribution Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 9
- 238000000465 moulding Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
Landscapes
- Coils Or Transformers For Communication (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
本發明係有關於一種耦合電感結構及製造方法，其主要係令第一線圈及第二線圈皆為捲繞為螺旋狀之扁平狀金屬線材，且第二線圈與第一線圈直徑相同、匝數亦相同，令第一線圈與第二線圈之軸線重疊且轉向相同予以旋轉螺旋結合，使得第一線圈與第二線圈各匝呈交錯重疊狀態，將磁性材封裝包覆固化於相結合之第一線圈與第二線圈外，並令第一線圈之第一線圈上端電極部、第一線圈下端電極部及第二線圈兩端之第二線圈上端電極部、第二線圈下端電極部彎折貼靠於該磁性材外；藉此，使得第一、二線圈結合後，重疊密合度高，能使其磁場分佈均勻、達到極佳的使用效率，且不需另行焊設連接電極，能降低整體之阻抗、避免工作溫度增加，連帶即可延長其使用壽命，而在其整體施行使用上更增實用功效特性者。 The invention relates to a coupled inductor structure and a manufacturing method, which mainly make the first coil and the second coil both are flat metal wires wound in a spiral shape, and the second coil has the same diameter and the number of turns as the first coil. It is also the same, so that the axes of the first coil and the second coil overlap and turn in the same direction and are rotated and spirally combined, so that the turns of the first coil and the second coil are staggered and overlapped. Outside the coil and the second coil, the first coil upper electrode portion, the first coil lower electrode portion, and the second coil upper electrode portion and the second coil lower electrode portion of the first coil are bent and abutted against each other. Outside the magnetic material; by this means, after the first and second coils are combined, the overlap tightness is high, which can make the magnetic field distribution uniform and achieve excellent use efficiency, and it is not necessary to separately install a connection electrode, which can reduce the overall Impedance, avoiding the increase in operating temperature, which can extend its service life, and add practical features to its overall implementation and use.
Description
本發明係有關於一種耦合電感結構及製造方法，尤其是指一種令第一、二線圈結合後，重疊密合度高，能使其磁場分佈均勻、達到極佳的使用效率，且不需另行焊設連接電極，能降低整體之阻抗、避免工作溫度增加，連帶即可延長其使用壽命，而在其整體施行使用上更增實用功效特性者。 The invention relates to a coupled inductor structure and a manufacturing method, in particular to a method for making the first and second coils combined with a high degree of overlap and closeness, which can make the magnetic field distribution uniform and achieve excellent use efficiency without the need for additional welding. The connection electrode can reduce the overall impedance and avoid the increase of operating temperature, which can prolong its service life, and increase the practical performance characteristics in its overall implementation and use.
按，於許多電路板、電子產品上，常可見到設置有各種電感元件、變壓器，該電感元件也稱為自感元件，如果兩個或兩個以上的線圈中每個線圈所產生的磁通都與另一個線圈相交鏈，則稱這些線圈有磁耦合〔magnetic coupling〕或者說具有互感〔mutual induction)，若假定這些線圈是靜止的，並且忽略了線圈中的電阻和匝間的分布電容，具有磁耦合的諸線圈就可表示為理想化的耦合電感元件〔coupled inductor〕，簡稱耦合電感。 According to many circuit boards and electronic products, various inductance components and transformers are often found. The inductance components are also called self-inductance components. If two or more coils generate magnetic flux from each coil, Both are interlinked with another coil, it is said that these coils have magnetic coupling or mutual induction. If these coils are assumed to be stationary, and the resistance in the coil and the distributed capacitance between turns are ignored, The coils with magnetic coupling can be expressed as idealized coupled inductive elements [coupled inductor], referred to as coupled inductor.
而一般常見之耦合電感，其主要係包含磁性材料，且在磁性材料上繞以銅線以做為線圈；於使用過程中，當該線圈中之電流增加時，磁性材料內部之磁場即會隨之增加。 The common coupling inductors generally include magnetic materials, and copper wires are wound on the magnetic materials as coils. During use, when the current in the coils increases, the magnetic field inside the magnetic materials will follow. Increase.
然而，上述耦合電感雖可達到既定之預期功效，但也在其實際操作使用上發現，其具有下列缺點： However, although the above-mentioned coupled inductor can achieve the intended effect, it is also found in its practical use that it has the following disadvantages:
1.該耦合電感之線圈係為圓形線材所繞設成型，使得各線圈間的密合度不佳，相對即會令其使用上磁場分佈不均勻，造成所能達到之使用效率不佳。 1. The coil of the coupled inductor is formed by winding a round wire, which makes the closeness between the coils poor, which will make the use of the magnetic field unevenly distributed, resulting in poor use efficiency.
2.該耦合電感之線圈係為圓形線材所繞設成型，使得該線圈於與磁性材料封裝時，於線圈兩端需另行焊設連接扁平狀之電極，造成其在焊接處之阻抗相對應會增加，導致該耦合電感在使用上容易發熱，連帶令整體電路的工作溫度提高，降低電路之使用壽命。 2. The coil of the coupled inductor is formed by winding a round wire, so that when the coil is packaged with a magnetic material, a flat electrode needs to be additionally welded at both ends of the coil, resulting in an impedance phase at the welding place. Correspondence will increase, which will cause the coupled inductor to easily generate heat during use, which will increase the operating temperature of the overall circuit and reduce the service life of the circuit.
緣是，發明人有鑑於此，秉持多年該相關行業之豐富設計開發及實際製作經驗，針對現有之結構及缺失再予以研究改良，提供一種耦合電感結構及製造方法，以期達到更佳實用價值性之目的者。 The reason is that the inventors have taken this into consideration, and based on many years of rich design, development, and actual production experience in the relevant industry, research and improve the existing structure and defects, and provide a coupled inductor structure and manufacturing method to achieve better practical value For the purpose.
本發明之主要目的在於提供一種耦合電感結構及製造方法，其主要係令第一、二線圈結合後，重疊密合度高，能使其磁場分佈 均勻、達到極佳的使用效率，且不需另行焊設連接電極，能降低整體之阻抗、避免工作溫度增加，連帶即可延長其使用壽命，而在其整體施行使用上更增實用功效特性者。 The main object of the present invention is to provide a coupled inductor structure and a manufacturing method, which mainly make the first and second coils combined to have a high degree of overlap and closeness, so that the magnetic field can be distributed. Uniform, achieve excellent use efficiency, and no additional welding electrode is needed, which can reduce the overall impedance and avoid the increase of operating temperature, which can extend its service life, and increase its practical performance characteristics in its overall use .
本發明耦合電感結構之主要目的與功效，係由以下具體技術手段所達成：其主要係包括有第一線圈、第二線圈及磁性材；其中：該第一線圈，其係為捲繞為螺旋狀之扁平狀金屬線材，且於該第一線圈兩端分別設第一線圈上端電極部及第一線圈下端電極部；該第二線圈，其係為捲繞為螺旋狀之扁平狀金屬線材，且該第二線圈與該第一線圈直徑相同、匝數亦相同，並於該第二線圈兩端分別設有第二線圈上端電極部及第二線圈下端電極部，令該第一線圈與該第二線圈之軸線重疊且轉向相同予以螺旋結合，使得該第一線圈與該第二線圈各匝呈交錯重疊狀態，令該第一線圈與該第二線圈各匝之間具良好重疊性，避免該第一線圈與該第二線圈各匝之線材錯位；該磁性材，其封裝包覆固化於相結合之該第一線圈與該第二線圈外，並令該第一線圈之該第一線圈上端電極部、該第一線圈下端電極部及該第二線圈兩端之該第二線圈上端電極部、該第二線圈下端電極部彎折貼靠於該磁性材外，讓該第一線圈上端電極部、該第一線圈下端電極部、該第二線圈上端電極部、該第二線圈下端電 極部直接做為接腳使用。 The main purpose and effect of the coupled inductor structure of the present invention are achieved by the following specific technical means: it mainly includes a first coil, a second coil, and a magnetic material; wherein: the first coil is wound in a spiral The flat coiled metal wire is provided with a first coil upper end electrode portion and a first coil lower end electrode portion at both ends of the first coil; the second coil is a flat metal wire wound in a spiral shape, In addition, the second coil has the same diameter and the same number of turns as the first coil, and a second coil upper electrode portion and a second coil lower electrode portion are provided at both ends of the second coil, so that the first coil and the The axis of the second coil overlaps with the same direction and is spirally combined, so that the turns of the first coil and the second coil are staggered and overlapped, so that the first coil and the second coil have a good overlap between the turns, avoiding The wires of the first coil and the second coil are misaligned; the magnetic material is packaged and cured outside the first coil and the second coil combined, and the first coil of the first coil Upper end The pole portion, the first coil lower electrode portion, the second coil upper electrode portion and the second coil lower electrode portion at both ends of the second coil are bent and abutted against the magnetic material, so that the first coil upper electrode Portion, the first coil lower electrode portion, the second coil upper electrode portion, and the second coil lower portion The poles are used directly as pins.
本發明耦合電感製造方法之主要目的與功效，係由以下具體技術手段所達成：其主要係包括下列步驟：A.以扁平狀金屬線材利用繞線機予以捲繞形成螺旋狀之第一線圈，且於該第一線圈兩端分別預留有一定長度之第一線圈上端電極部及第一線圈下端電極部；B.以扁平狀金屬線材利用繞線機予以捲繞形成螺旋狀之第二線圈，且該第二線圈與該第一線圈直徑相同、匝數亦相同，並於該第二線圈兩端分別預留有一定長度之第二線圈上端電極部及第二線圈下端電極部；C.將該第一線圈與該第二線圈以軸線重疊且轉向相同之方式予以旋轉螺旋結合，讓該第一線圈與該第二線圈於結合後各匝呈交錯重疊狀態，令該第一線圈與該第二線圈各匝之間具良好重疊性，避免該第一線圈與該第二線圈各匝之線材錯位；D.將結合後之該第一線圈與該第二線圈於模具內利用磁性材予以封裝包覆固化成型，且將該第一線圈兩端所預留之該第一線圈上端電極部、該第一線圈下端電極部及該第二線圈兩端所預留之該第二線圈上端電極部、該第二線圈下端電極部予以彎折貼靠在該磁性材外，讓該第一線圈上端電極部、該第一線圈下端電極部、該 第二線圈上端電極部、該第二線圈下端電極部直接做為接腳使用。 The main purpose and effect of the method for manufacturing a coupled inductor of the present invention are achieved by the following specific technical means: It mainly includes the following steps: A. A flat metal wire is wound by a winding machine to form a spiral first coil, And the first coil upper electrode portion and the first coil lower electrode portion of a certain length are respectively reserved at the two ends of the first coil; B. a flat metal wire is wound by a winding machine to form a spiral second coil And the second coil has the same diameter and the same number of turns as the first coil, and the second coil upper electrode portion and the second coil lower electrode portion of a certain length are reserved at both ends of the second coil; C. The first coil and the second coil are rotated and spirally combined in such a manner that the axis overlaps with the same direction of rotation, so that the turns of the first coil and the second coil are staggered and overlapped after the combination, so that the first coil and the second coil are overlapped with each other. There is good overlap between the turns of the second coil, to avoid misalignment of the wires of the first coil and the turns of the second coil; D. The magnetic properties of the first coil and the second coil after being combined are used in the mold. Encapsulating, curing and molding, and the first coil upper electrode portion reserved at both ends of the first coil, the first coil lower electrode portion, and the second coil upper end reserved at both ends of the first coil. The electrode portion and the second coil lower end electrode portion are bent and abutted against the magnetic material, so that the first coil upper end electrode portion, the first coil lower end electrode portion, the The upper end electrode portion of the second coil and the lower end electrode portion of the second coil are directly used as pins.
(1)‧‧‧第一線圈 (1) ‧‧‧First coil
(11)‧‧‧第一線圈上端電極部 (11) ‧‧‧The upper electrode part of the first coil
(12)‧‧‧第一線圈下端電極部 (12) ‧‧‧The lower electrode part of the first coil
(2)‧‧‧第二線圈 (2) ‧‧‧Second Coil
(21)‧‧‧第二線圈上端電極部 (21) ‧‧‧The upper electrode part of the second coil
(22)‧‧‧第二線圈下端電極部 (22) ‧‧‧The lower electrode part of the second coil
(3)‧‧‧磁性材 (3) ‧‧‧Magnetic material
第一圖：本發明之立體分解結構示意圖 First figure: Schematic diagram of the three-dimensional exploded structure of the present invention
第二圖：本發明之立體組合結構示意圖 Second figure: Schematic diagram of the three-dimensional combination structure of the present invention
第三圖：本發明之側視組合剖視結構示意圖 Third figure: Schematic diagram of the side sectional view of the present invention
第四圖：本發明之立體成型外觀結構示意圖 Figure 4: Schematic diagram of the three-dimensional molding appearance of the present invention
第五圖：本發明之立體成型結構示意圖 Figure 5: Schematic diagram of the three-dimensional molding structure of the present invention
為令本發明所運用之技術內容、發明目的及其達成之功效有更完整且清楚的揭露，茲於下詳細說明之，並請一併參閱所揭之圖式及圖號：首先，請參閱第一圖本發明之立體分解結構示意圖所示，本發明主要係包括有第一線圈(1)及第二線圈(2)；其中：該第一線圈(1)，其係以扁平狀金屬線材利用繞線機予以捲繞形成螺旋狀，且於該第一線圈(1)兩端分別預留有一定長度之第一線圈上端電極部(11)及第一線圈下端電極部(12)。 In order to provide a more complete and clear disclosure of the technical content, the purpose of the invention and the effect achieved by the present invention, it is described in detail below, and please also refer to the disclosed drawings and numbers: First, please refer to The first figure shows a three-dimensional exploded structure of the present invention. The present invention mainly includes a first coil (1) and a second coil (2). Among them: the first coil (1) is made of flat metal wires. It is wound by a winding machine to form a spiral shape, and a first coil upper end electrode portion (11) and a first coil lower end electrode portion (12) of a certain length are respectively reserved at both ends of the first coil (1).
該第二線圈(2)，其係以扁平狀金屬線材利用繞線機予以捲繞形成螺旋狀，且該第二線圈(2)與該第一線圈(1)直徑相同、匝數亦相同，並於該第二線圈(2)兩端分別預留有一定長度 之第二線圈上端電極部(21)及第二線圈下端電極部(22)。 The second coil (2) is wound into a spiral shape by a flat metal wire using a winding machine, and the second coil (2) and the first coil (1) have the same diameter and the same number of turns. And a certain length is reserved at each end of the second coil (2) The second coil upper end electrode portion (21) and the second coil lower end electrode portion (22).
請再一併參閱第二圖本發明之立體組合結構示意圖及第三圖本發明之側視組合剖視結構示意圖所示，將該第一線圈(1)與該第二線圈(2)以軸線重疊且轉向相同之方式予以旋轉螺旋結合，讓該第一線圈(1)與該第二線圈(2)於結合後各匝呈交錯重疊狀態，令該第一線圈(1)與該第二線圈(2)各匝之間具良好重疊性，避免該第一線圈(1)與該第二線圈(2)各匝之線材錯位。 Please refer to the second diagram of the three-dimensional assembly structure of the present invention and the third diagram of the side-view assembly sectional structure of the present invention. The first coil (1) and the second coil (2) are aligned along the axis. Overlap and turn in the same way to rotate and spirally combine, so that the turns of the first coil (1) and the second coil (2) are staggered and overlapped after the combination, so that the first coil (1) and the second coil (2) There is a good overlap between the turns to avoid misalignment of the wires of the turns of the first coil (1) and the second coil (2).
請再一併參閱第四圖本發明之立體成型外觀結構示意圖及第五圖本發明之立體成型結構示意圖所示，再將結合後之該第一線圈(1)與該第二線圈(2)於模具內利用磁性材(3)予以封裝包覆固化成型，且將該第一線圈(1)兩端所預留之該第一線圈上端電極部(11)、該第一線圈下端電極部(12)及該第二線圈(2)兩端所預留之該第二線圈上端電極部(21)、該第二線圈下端電極部(22)予以彎折貼靠在該磁性材(3)外，讓該第一線圈上端電極部(11)、該第一線圈下端電極部(12)、該第二線圈上端電極部(21)、該第二線圈下端電極部(22)直接做為接腳使用，即完成耦合電感之製作。 Please refer to the fourth diagram of the three-dimensional molding structure of the present invention and the fifth diagram of the three-dimensional molding structure of the present invention, and then combine the first coil (1) and the second coil (2). A magnetic material (3) is used for encapsulating, curing and molding in a mold, and the first coil upper electrode portion (11) and the first coil lower electrode portion (1) reserved at both ends of the first coil (1) are 12) and the second coil upper electrode portion (21) and the second coil lower electrode portion (22) reserved at both ends of the second coil (2) are bent and abutted against the magnetic material (3) Let the upper coil electrode portion (11) of the first coil, the lower coil electrode portion (12), the upper coil electrode portion (21), and the lower coil electrode portion (22) of the first coil directly serve as pins. Use it to complete the production of coupled inductors.
藉由以上所述，本發明之使用實施說明可知，本發明與現有技術手段相較之下，本發明主要係具有下列優點： From the above description of the use and implementation of the present invention, it can be known that compared with the prior art, the present invention mainly has the following advantages:
1.本發明之第一線圈與第二線圈皆係為扁平狀金屬線材捲繞形成螺旋狀，使得第一線圈與第二線圈於結合後，其重疊密合度 高，令該第一線圈與該第二線圈各匝之間具良好重疊性，避免該第一線圈與該第二線圈各匝之線材錯位，相對即能使其磁場分佈均勻，令其可達到極佳的使用效率。 1. The first coil and the second coil of the present invention are both flat metal wires wound into a spiral shape, so that after the first coil and the second coil are combined, their overlapping tightness High, so that the first coil and the second coil have a good overlap between the turns, avoiding the misalignment of the wires of the first coil and the second coil, which can relatively make the magnetic field uniform, so that it can reach Excellent use efficiency.
2.本發明之第一線圈與第二線圈皆係為扁平狀金屬線材捲繞形成螺旋狀，於利用磁性材封裝包覆時，能直接以第一、二線圈所預留之電極部彎折貼靠在該磁性材外，讓該第一線圈上端電極部、該第一線圈下端電極部、該第二線圈上端電極部、該第二線圈下端電極部直接做為接腳使用，不需另行焊設連接電極，使得能降低整體之阻抗，避免因阻抗增加造成工作溫度增加，連帶即可延長其使用壽命。 2. The first coil and the second coil of the present invention are both flat metal wires wound into a spiral shape. When the magnetic material is used for encapsulation, it can be directly bent by the electrode portions reserved by the first and second coils. Abutting on the magnetic material, the first coil upper end electrode portion, the first coil lower end electrode portion, the second coil upper end electrode portion, and the second coil lower end electrode portion can be directly used as pins, without the need for additional Welding connection electrodes can reduce the overall impedance and avoid the increase in operating temperature due to the increase in impedance, which can extend its service life.
然而前述之實施例或圖式並非限定本發明之產品結構或使用方式，任何所屬技術領域中具有通常知識者之適當變化或修飾，皆應視為不脫離本發明之專利範疇。 However, the foregoing embodiments or drawings do not limit the product structure or usage of the present invention, and any appropriate changes or modifications by those with ordinary knowledge in the technical field should be regarded as not departing from the patent scope of the present invention.
綜上所述，本發明實施例確能達到所預期之使用功效，又其所揭露之具體構造，不僅未曾見諸於同類產品中，亦未曾公開於申請前，誠已完全符合專利法之規定與要求，爰依法提出發明專利之申請，懇請惠予審查，並賜准專利，則實感德便。 In summary, the embodiments of the present invention can indeed achieve the expected use effect, and the specific structure disclosed has not only been seen in similar products, nor has it been disclosed before the application. It has fully complied with the provisions of the Patent Law. In accordance with the law, the application for an invention patent was submitted in accordance with the law, and we are kindly requested to review it and grant the patent.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW107123927A TWI660382B (en) | 2018-07-11 | 2018-07-11 | Coupled inductor structure and a method for manufacturing the sam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW107123927A TWI660382B (en) | 2018-07-11 | 2018-07-11 | Coupled inductor structure and a method for manufacturing the sam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TWI660382B true TWI660382B (en) | 2019-05-21 |
| TW202006758A TW202006758A (en) | 2020-02-01 |
Family
ID=67348230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW107123927A TWI660382B (en) | 2018-07-11 | 2018-07-11 | Coupled inductor structure and a method for manufacturing the sam |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI660382B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102460608A (en) * | 2009-05-04 | 2012-05-16 | 库柏技术公司 | Magnetic components and methods of manufacturing same |
| TW201222579A (en) * | 2010-11-25 | 2012-06-01 | Cyntec Co Ltd | Inductor and method of producing an inductor |
| CN102810394A (en) * | 2011-05-31 | 2012-12-05 | 美桀电子科技(深圳)有限公司 | Coil winding method |
-
2018
- 2018-07-11 TW TW107123927A patent/TWI660382B/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102460608A (en) * | 2009-05-04 | 2012-05-16 | 库柏技术公司 | Magnetic components and methods of manufacturing same |
| TW201222579A (en) * | 2010-11-25 | 2012-06-01 | Cyntec Co Ltd | Inductor and method of producing an inductor |
| CN102810394A (en) * | 2011-05-31 | 2012-12-05 | 美桀电子科技(深圳)有限公司 | Coil winding method |
Also Published As
| Publication number | Publication date |
|---|---|
| TW202006758A (en) | 2020-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1627457B (en) | Magnetic component and its making method | |
| TWI405225B (en) | Choke coil | |
| WO2016009899A1 (en) | Surface-mounted inductor and manufacturing method therefor | |
| WO2010057350A1 (en) | Iductor device and manfacturing method thereof | |
| JP2018041955A (en) | Magnetic powder and inductor containing the same | |
| US10096421B2 (en) | Coil device and method for manufacturing the same | |
| WO2020164645A2 (en) | Inductive component and manufacturing method | |
| US11929201B2 (en) | Surface mount inductor and method for manufacturing the same | |
| CN103714945A (en) | Electronic component and manufacturing method thereof | |
| JPH04165605A (en) | Inductor and manufacture thereof | |
| TWI685860B (en) | Inductor device and method of fabricating the same | |
| TWI660382B (en) | Coupled inductor structure and a method for manufacturing the sam | |
| JP2011199098A (en) | Winding method of molded coil integrated with winding | |
| CN102867624B (en) | A kind of encapsulating structure of inductance | |
| CN204375522U (en) | High frequency transformer | |
| JP2008210978A (en) | Wire-wound electronic component | |
| CN103426574B (en) | Dry-type hollow inductance resistor | |
| US20210035730A1 (en) | Inductor | |
| US11848145B2 (en) | Coil and inductor including the same | |
| TWI849619B (en) | Method for forming magnetic element winding | |
| CN216119793U (en) | Double-coil molded inductor with surface-mounted rectangular packaging structure | |
| TWM571575U (en) | Coupled inductor structure | |
| CN218957506U (en) | EQ type magnetic powder core inductor | |
| CN103489610A (en) | Processing and manufacturing method of common-mode inductor | |
| CN219202923U (en) | Self-adhesive runway type flat coil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Annulment or lapse of patent due to non-payment of fees |