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WO2025083930A1 - Composant de bobine - Google Patents

Composant de bobine Download PDF

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Publication number
WO2025083930A1
WO2025083930A1 PCT/JP2024/017023 JP2024017023W WO2025083930A1 WO 2025083930 A1 WO2025083930 A1 WO 2025083930A1 JP 2024017023 W JP2024017023 W JP 2024017023W WO 2025083930 A1 WO2025083930 A1 WO 2025083930A1
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WO
WIPO (PCT)
Prior art keywords
wall surface
flange
core
wire
coil component
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2024/017023
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English (en)
Japanese (ja)
Inventor
昌史 宮本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Publication of WO2025083930A1 publication Critical patent/WO2025083930A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • H01F27/29—Terminals; Tapping arrangements for signal inductances

Definitions

  • This invention relates to a coil component that includes a core having a winding core portion around which wire is wound, a first flange portion and a second flange portion provided at each end of the winding core portion, and a top plate portion arranged to connect between the first flange portion and the second flange portion, and in particular, to the structure of the core.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2003-163119
  • Patent Document 1 describes a coil component having a core in which a winding core section around which wire is wound, first and second flange sections that extend in one direction from each end of the winding core section, and bridge sections that extend from each of the first and second flange sections are integrated.
  • the bridge sections are disposed at a predetermined distance from the winding core section.
  • the bridge sections also have a gap in the center of their length that forms a predetermined distance.
  • Patent Document 1 With the core described in Patent Document 1, there is a concern that when winding the wire around the winding core, the presence of the bridge portion, which is disposed at a predetermined distance from the winding core, may impede winding of the wire.
  • paragraph 0020 of Patent Document 1 states, "In this way, by forming the tip faces of the bridge portions 1c to face each other at a predetermined distance L, a gap 7 is formed between the tip faces of the opposing bridge portions 1c, and by utilizing this gap 7, it is possible to easily wind the conductor wire 3 around the body portion 1b.”
  • Patent Document 1 states that winding the conductor (wire) can be performed easily. However, in reality, winding the wire is not that easy.
  • the object of this invention is to provide a coil component that allows wire to be easily wound around the winding core, even if there is a component in an integrated core that is positioned at a predetermined distance from the winding core and that is arranged along the axial direction of the winding core.
  • the coil component according to the present invention comprises a core made of a magnetic material, which is integrated with a winding core, a first flange and a second flange provided at a first end and a second end, respectively, that are opposite to each other in the axial direction of the winding core, and a top plate located at a predetermined distance from the winding core and extending in a direction connecting the first flange and the second flange, a wire wound around the winding core, and a first terminal electrode and a second terminal electrode provided at the first flange and the second flange, respectively, to which the opposite first terminal and second terminal of the wire are connected, respectively.
  • the top plate corresponds to a member located at a predetermined distance from the winding core and arranged along the axial direction of the winding core.
  • the directions perpendicular to the axial direction are referred to as the width direction and the height direction, and the width direction and the height direction are referred to as directions perpendicular to each other.
  • the core has a gap that cuts off part of the loop of magnetic flux that passes through the winding core, first flange, second flange, and top plate, and is defined by the opposing first and second wall surfaces and penetrates the core in the width direction.
  • this invention is characterized in that, when viewed from the outside of the core in the direction in which the first wall surface and the second wall surface face each other, a portion of the first wall surface forms a protruding portion that protrudes beyond the periphery of the second wall surface.
  • a portion of the first wall, of the first and second walls that define the gap forms a protruding portion that protrudes beyond the periphery of the second wall, so that the protruding portion of the first wall can be used to smoothly guide the wire around the winding core. Therefore, even if there is a top plate portion that is arranged at a predetermined distance from the winding core, the wire can be easily wound around the winding core.
  • FIG. 1 is a front view showing the appearance of a coil component 1 according to a first embodiment of the present invention
  • 2 is a perspective view showing a core 2 included in the coil component 1 shown in FIG. 1
  • FIG. 3 is a right side view of the core 2 shown in FIG. 2
  • 3 is a perspective view for explaining a procedure for winding a wire 8 around a winding core portion provided in the core 2 shown in FIG. 2.
  • FIG. 4 is a perspective view showing a first modified example of the core 2 shown in FIGS. 2 and 3 .
  • FIG. 6 is a right side view of the core 2 shown in FIG. 5 .
  • FIG. 4 is a perspective view showing a second modified example of the core 2 shown in FIGS. 2 and 3 .
  • FIG. 4 is a perspective view showing a third modified example of the core 2 shown in FIGS. 2 and 3 .
  • FIG. 11 is a perspective view showing a core 2a provided in a coil component according to a second embodiment of the present invention.
  • FIG. 10 is a front view of the core 2a shown in FIG. 9.
  • FIG. 10 is a top view of the core 2a shown in FIG. 9.
  • 12 is a front view showing a first modified example of the core 2a shown in FIGS. 9 to 11.
  • FIG. 12 is a front view showing a second modified example of the core 2a shown in FIGS. 9 to 11.
  • FIG. FIG. 12 is a front view showing a third modified example of the core 2a shown in FIGS. 9 to 11.
  • FIG. 12 is a perspective view showing a fourth modified example of the core 2a shown in FIGS. 9 to 11.
  • FIG. 16 is a top view of the core 2a shown in FIG. 15.
  • FIG. 12 is a perspective view showing a fifth modified example of the core 2a shown in FIGS. 9 to 11.
  • FIG. 18 is a front view of the core 2a shown in FIG. 17.
  • FIG. 11 is a perspective view showing a core 2b included in a coil component according to a third embodiment of the present invention.
  • FIG. 20 is a right side view of the core 2b shown in FIG. 19.
  • FIG. 11 is a perspective view showing a core 2c provided in a coil component according to a fourth embodiment of the present invention.
  • FIG. 22 is a right side view of the core 2c shown in FIG. 21.
  • FIG. 13 is a perspective view showing a core 2d provided in a coil component according to a fifth embodiment of the present invention.
  • the coil component 1 includes a core 2 made of a magnetic material.
  • the core 2 is integrated with a winding core portion 3, a first flange portion 5 and a second flange portion 6 provided at first and second ends, respectively, that are opposite each other in the axial direction A of the winding core portion 3, and a top plate portion 7 that is positioned at a predetermined distance from the winding core portion 3 and extends in a direction connecting the first flange portion 5 and the second flange portion 6.
  • the coil component 1 also includes a wire 8 wound around the winding core 3.
  • the wire 8 is shown by a thick line.
  • the coil component 1 includes a first terminal electrode 9 and a second terminal electrode 10 provided on the first flange portion 5 and the second flange portion 6, respectively, to which the first terminal and the second terminal of the wire 8, which are opposite to each other, are connected, respectively.
  • the directions perpendicular to the axial direction A are the width direction W and the height direction H, and the width direction W and the height direction H are perpendicular to each other.
  • the core 2 is preferably made of ferrite or a resin containing metal magnetic powder.
  • the dimension of the core 2 in the axial direction A is 2.0 mm or more and 4.5 mm or less
  • the dimension of the core 2 in the width direction W is 1.2 mm or more and 3.2 mm or less.
  • the dimension in the axial direction A is longer than the dimension in the width direction W.
  • the dimension in the height direction H is not particularly limited, but is generally 1.6 mm or more and 4.0 mm or less.
  • the first flange 5 and the second flange 6 are preferably provided so as to protrude in all directions, including the width direction W and the height direction H, from the first end and the second end of the winding core 3, respectively.
  • the top plate 7 is disposed along the axial direction A at a predetermined distance in the height direction H from the winding core 3, and the dimension in the width direction W is made larger than the dimension in the width direction W defined by the outer periphery of the wire 8 wound around the winding core 3.
  • the first terminal electrode 9 and the second terminal electrode 10 are provided on the opposite side in the height direction H from the side where the top plate portion 7 is located in the first flange portion 5 and the second flange portion 6, respectively.
  • the terminal electrodes 9 and 10 are formed, for example, by baking a conductive paste containing silver and then plating it with nickel and tin.
  • terminal members made of metal plates may be attached to the first flange portion 5 and the second flange portion 6 by adhesive or crimping to form the first terminal electrode 9 and the second terminal electrode 10.
  • the first and second terminals of the wire 8 are connected to the first terminal electrode 9 and the second terminal electrode 10, respectively, by, for example, thermocompression or laser welding. In the state shown in FIG. 1, the first and second terminals of the wire 8 are connected to the downward facing surfaces of the first terminal electrode 9 and the second terminal electrode 10, respectively, as shown in FIG. 1. However, the first and second terminals of the wire 8 may be connected to any location on the first terminal electrode 9 and the second terminal electrode 10.
  • the wire 8 is wound so as to proceed in the axial direction A while spirally going around the winding core 3.
  • a coil component 1 having the wire 8 wound in this manner is sometimes called a horizontally wound inductor.
  • the wire 8 is composed of a single wire, but it may be composed of two or more parallel wires in order to reduce electrical resistance without making each wire thicker.
  • the turns of the wire 8 wound around the winding core 3 may be in close contact or separated from each other. Generally, in coil components with high inductance values, the turns of the wire 8 are in close contact with each other, and in coil components with low inductance values, the turns of the wire 8 are separated from each other.
  • a magnetic flux loop is formed in the core 2, passing through the winding core portion 3, the first flange portion 5, the second flange portion 6, and the top plate portion 7, but a portion of this magnetic flux loop is interrupted.
  • a gap 11 is provided at the connection position of the top plate portion 7 with the second flange portion 6, thereby interrupting the magnetic flux loop.
  • the gap 11 is defined by a first wall surface 13 and a second wall surface 14 facing each other, and is provided in a state in which it penetrates in the width direction W and the height direction H.
  • the first wall surface 13 is located closer to the first flange portion 5 than the second wall surface 14.
  • the width of the gap 11 i.e., the distance between the first wall surface 13 and the second wall surface 14, it is possible to balance the inductance and DC superposition characteristics of the coil component 1, thereby obtaining an inductor with an optimal balance.
  • the gap 11 has a width of, for example, 100 ⁇ m or more and 600 ⁇ m or less.
  • the gap 11 also has the function of providing a passage for guiding the wire 8 from the outside of the core 2 to around the winding core 3.
  • a part of the first wall 13 forms a protruding portion 13p that protrudes from the periphery of the second wall 14.
  • the protruding portion 13p is clearly shown in FIG. 3. In this embodiment, the protruding portion 13p protrudes in the width direction W from the periphery of the second wall 14.
  • a recess 15 is provided in order to form the protruding portion 13p in which a part of the first wall 13 protrudes from the periphery of the second wall 14.
  • the recess 15 is provided so as to extend from the connection portion with the second flange 6 of the top plate portion 7, which is the portion that forms the second wall 14, to a part of the second flange 6.
  • the first end of the wire 8 is connected to the first terminal electrode 9.
  • the wire 8 is pulled toward the second flange 6, and then moved so as to hit the protruding portion 13p of the first wall surface 13 that defines the gap 11, as shown by the arrow 16 in FIG. 4(1). This makes it possible to easily introduce the wire 8 into the gap 11.
  • the wire 8 is guided into the gap 11 and then guided along the first wall surface 13 of the gap 11 in the direction indicated by the arrow 17.
  • the wire 8 is smoothly guided into the gap 11.
  • the wire 8 is moved in the direction indicated by the arrow 18 within the gap 11, and begins to be wound around the winding core 3.
  • the wire 8 is wound around the winding core 3, and in this state, tension is applied in the direction of the arrow 19, causing it to move in the direction of the arrow 20 and be pulled toward the first flange 5.
  • the same procedure is repeated to continue winding the wire 8 around the winding core 3.
  • the second end of the wire 8 is connected to the second terminal electrode 10.
  • the wire 8 is usually maintained in a taut state.
  • the protruding portion 13p of the first wall surface 13 protrudes from the periphery of the second wall surface 14 in a second direction opposite to the first direction.
  • the wire 8 is wound clockwise around the winding core 3 when viewed in the direction from the second flange 6 to the first flange 5.
  • the wire 8 winds in the right direction when viewed in the direction from the second flange 6 to the first flange 5 with the top plate 7 facing up. Therefore, when viewed from the same direction, the protruding portion 13p of the first wall surface 13 protrudes from the periphery of the second wall surface 14 in the left direction, opposite to the right direction.
  • the wire 8 when the wire 8 is wound counterclockwise around the winding core 3 as viewed in the direction from the second flange 6 to the first flange 5 after its first terminal is connected to the first terminal electrode 9, the wire 8 winds in the leftward direction on the surface of the winding core 3 facing the top plate 7 as viewed in the direction from the second flange 6 to the first flange 5 with the top plate 7 facing up. Therefore, the protruding portion 13p of the first wall surface 13 protrudes in the rightward direction, opposite to the leftward direction, from the periphery of the second wall surface 14 as viewed from the same direction.
  • the gap 11 may be provided at the connection position of the top plate portion 7 with the first flange portion 5, on the opposite side to the position shown in Figures 1 and 2.
  • FIG. 5 is a perspective view showing a first modified example of the core 2 shown in FIGS. 2 and 3, and FIG. 6 is a right side view of the core 2 shown in FIG. 5.
  • elements corresponding to those shown in FIGS. 2 and 3 are given the same reference numerals, and duplicated explanations will be omitted.
  • the recess 15, which forms a part of the first wall surface 13 as a protruding portion 13p, may be provided at both ends in the width direction W of the top plate portion 7 at the connection portion with the second flange portion 6 of the top plate portion 7.
  • the protruding portion 13p of the first wall surface 13 protrudes both left and right from the periphery of the second wall surface 14 when viewed in the direction from the second flange portion 6 toward the first flange portion 5 with the top plate portion 7 facing up.
  • the wire can be smoothly guided around the winding core 3 by utilizing the protruding portion 13p of the first wall surface 13 regardless of whether the wire is wound around the winding core 3 in the clockwise or counterclockwise direction, so the winding direction of the wire around the winding core 3 is not selectable.
  • FIG. 7 is a perspective view showing a second modified example of the core 2 shown in FIG. 2.
  • elements corresponding to those shown in FIG. 2 are given the same reference numerals, and duplicated explanations are omitted.
  • a part of the inner wall surface that defines the recess 15 and faces to the side forms an inclined surface 21 that extends in a direction that guides the wire 8 toward the winding core portion 3.
  • the wire can be guided more smoothly around the winding core portion 3 along the inclined surface 21.
  • the presence of such an inclined surface 21 can reduce the volume of the recess 15, so that a larger inductance value can be obtained in the coil component.
  • FIG. 8 is a perspective view showing a third modified example of the core 2 shown in FIG. 2.
  • elements corresponding to those shown in FIG. 2 are given the same reference numerals, and duplicated explanations are omitted.
  • the upwardly facing surface that is part of the inner wall surface that defines the recess 15 forms an inclined surface 22 that extends in a direction that guides the wire 8 toward the winding core portion 3.
  • the wire can be guided more smoothly around the winding core portion 3 along the inclined surface 22.
  • the presence of such an inclined surface 21 can reduce the volume of the recess 15, making it possible to obtain a larger inductance value in the coil component.
  • FIG. 9 is a perspective view showing a core 2a provided in a coil component according to a second embodiment of the present invention.
  • FIG. 10 is a front view of the core 2a shown in FIG. 9.
  • FIG. 11 is a top view of the core 2a shown in FIG. 9.
  • gap 11a is provided at a position sandwiched between the connection position of second flange 6 with top plate portion 7 and the connection position of second flange 6 with winding core portion 3, while penetrating in axial direction A and width direction W.
  • Gap 11a is defined by first wall surface 13a and second wall surface 14a that face each other.
  • first wall surface 13a is located closer to winding core portion 3 than second wall surface 14a.
  • a portion of the first wall surface 13a forms a protruding portion 13p that protrudes in the width direction W beyond the periphery of the second wall surface 14a.
  • a recess 15a is provided at the connection portion with the second flange portion 6 of the top plate portion 7, which is the portion that forms the second wall surface 14a.
  • the first end of the wire is connected to the first terminal electrode 9, and then the wire is guided into the gap 11a.
  • the wire is moved so that it hits the protruding portion 13p of the first wall surface 13a that defines the gap 11a, and is guided into the gap 11a.
  • the wire is then wound around the winding core 3 while being guided along the first wall surface 13a of the gap 11a.
  • the first wall surface 13a that defines the gap 11a is flush with the upper surface of the winding core portion 3, and the second wall surface 14a is flush with the lower surface of the top plate portion 7.
  • the second wall surface 14a is flush with the bottom surface of the top plate portion 7, but the first wall surface 13a is positioned higher than the top surface of the core portion 3 with a step.
  • the first wall surface 13a is positioned higher than the upper surface of the winding core portion 3, and the second wall surface 14a is also positioned higher than the lower surface of the top plate portion 7, with a step therebetween.
  • the second wall surface 14a being positioned higher than the lower surface of the top plate portion 7 means that the second wall surface 14a is positioned higher than the lower surface of the top plate portion 7, and does not necessarily mean that it is positioned higher in the height direction H.
  • the first wall surface 13a is flush with the upper surface of the winding core portion 3, but the second wall surface 14a is positioned higher than the lower surface of the top plate portion 7 with a step.
  • FIGS. 15 and 16 show a perspective view and a top view of a fourth modified example of the core 2a shown in FIGS. 9 to 11.
  • the modified example shown in FIGS. 15 and 16 corresponds to the modified example shown in FIGS. 5 and 6 described above.
  • recesses 15a which form part of the first wall surface 13a as protruding portions 13p, are provided at both ends in the width direction W of the top plate portion 7 at the connection portion with the second flange portion 6 of the top plate portion 7.
  • the protruding portions 13p of the first wall surface 13a protrude both left and right from the periphery of the second wall surface 14a when viewed in the direction from the second wall surface 14a toward the first wall surface 13a with the first flange portion 5 facing up.
  • the wire can be smoothly guided around the winding core 3 by utilizing the protruding portion 13p of the first wall surface 13a regardless of whether the wire is wound around the winding core 3 in the clockwise or counterclockwise direction, so the winding direction of the wire around the winding core 3 is not selectable.
  • FIGS. 17 and 18 show a perspective view and a front view of a fifth modified example of the core 2a shown in FIGS. 9 to 11.
  • the modified example shown in FIGS. 17 and 18 corresponds to the modified example shown in FIG. 7 or the modified example shown in FIG. 8.
  • a portion of the inner wall surface defining the recess 15a forms an inclined surface 22 that extends in a direction that guides the wire toward the winding core 3.
  • the wire can be guided more smoothly around the winding core 3 along the inclined surface 22.
  • the presence of such an inclined surface 22 can reduce the volume of the recess 15a, thereby making it possible to obtain a larger inductance value.
  • FIGS. 19 and 20 show a perspective view and a right side view of a core 2b provided in a coil component according to a third embodiment of the present invention.
  • the embodiment shown in Figs. 19 and 20 is a modified version of the multiple embodiments described with reference to Figs. 1 to 8.
  • a recess 15 was provided in the area forming the second wall surface 14 facing the first wall surface 13 in order to form the protruding portion 13p on the first wall surface 13, but in the embodiment shown in Figures 19 and 20, a protrusion 25 is provided in the area forming the first wall surface 13, more specifically in the top plate portion 7, in order to form the protruding portion 13p.
  • the function of the protruding portion 13p is similar to that of the protruding portion 13p in the embodiment described with reference to Figures 1 to 4 above.
  • FIG. 21 and 22 show a core 2c provided in a coil component according to a fourth embodiment of the present invention in a perspective view and a right side view.
  • the embodiment shown in Figs. 21 and 22 is a modified example of the embodiment described with reference to Figs. 9 to 11.
  • the embodiment shown in Figs. 21 and 22 corresponds to the embodiment shown in Figs. 19 and 20 described above.
  • a recess 15a was provided in the portion forming the second wall surface 14a facing the first wall surface 13a in order to form the protruding portion 13p on the first wall surface 13a, but in the embodiment shown in Figures 21 and 22, a protrusion 25a is provided in the portion forming the first wall surface 13a, more specifically, in the second flange portion 6 in order to form the protruding portion 13p.
  • the function of the protruding portion 13p is similar to that of the protruding portion 13p in the embodiment described with reference to Figures 9 to 11.
  • FIG. 23 is a perspective view showing a core 2d provided in a coil component according to a fifth embodiment of the present invention.
  • the features of this embodiment will become clear by explaining the differences from the embodiment shown in FIG. 2 described above. Therefore, in FIG. 23, elements corresponding to those shown in FIG. 2 are given the same reference numerals, and duplicate explanations will be omitted.
  • the gap 11 is filled with a filler 27.
  • the filler 27 is made of a resin or a resin containing magnetic powder.
  • the structure of the top plate portion 7 in the core 2 shown in Figure 2 resembles a so-called cantilever beam structure when used alone, and the part at the base of the beam is subjected to greater stress than usual when an external force is applied.
  • the gap 11 is filled with filler material 27 as shown in Figure 23, the cantilever beam structure can be eliminated. Therefore, even if an external force is applied to the top plate portion 7, the stress can be reduced, meaning it can be made less likely to break.
  • the filler 27 is made of resin containing magnetic powder, the effect of eliminating the cantilever structure can be obtained, similar to the above-mentioned case where the filler 27 is made of resin.
  • the core 2d is usually made by die molding. Therefore, the gap 11 is formed by die molding. However, sometimes it is necessary to make the gap 11 wider due to the manufacturing process of the die.
  • the gap 11 is filled with a filler 27 made of resin containing magnetic powder, the magnetic resistance can be reduced and the electrical characteristics can be improved.
  • the characteristic configuration of the embodiment shown in FIG. 23, such as having the filler 27, is not limited to the embodiment shown in FIG. 2, but can also be applied to the other embodiments disclosed herein.
  • the protruding portion 13p may protrude in a direction other than the width direction W.
  • a core made of a magnetic material the core being integrated with a winding core portion, a first flange portion and a second flange portion provided at a first end and a second end opposite to each other in an axial direction of the winding core portion, and a top plate portion positioned at a predetermined interval from the winding core portion and extending in a direction connecting the first flange portion and the second flange portion;
  • ⁇ 3> The coil component described in ⁇ 1> or ⁇ 2>, wherein the gap is provided at a connection position of the top plate portion with the second flange portion, penetrating the top plate portion in the width direction and the height direction, and the first wall surface is located closer to the first flange portion than the second wall surface.
  • ⁇ 7> The coil component described in ⁇ 1> or ⁇ 2>, wherein the gap is provided at a position between a connection position of the second flange with the top plate portion and a connection position of the second flange with the winding core portion, with the gap penetrating in the axial direction and the width direction, and the first wall surface is located closer to the winding core portion than the second wall surface.
  • ⁇ 9> The coil component according to any one of ⁇ 1> to ⁇ 8>, wherein a recess is provided in a portion that forms the second wall surface in order to form the protruding portion of the first wall surface.
  • ⁇ 12> The coil component according to any one of ⁇ 1> to ⁇ 11>, wherein the first flange portion and the second flange portion are provided in a state of protruding from the first end and the second end of the winding core portion in all directions including the width direction and the height direction.
  • ⁇ 13> The coil component according to any one of ⁇ 1> to ⁇ 12>, wherein a dimension in the width direction of the top plate portion is larger than a dimension in the width direction defined by an outer circumferential edge of the wire wound around the winding core portion.
  • ⁇ 14> The coil component according to any one of ⁇ 1> to ⁇ 13>, wherein the gap is filled with a filler made of either a resin or a resin containing magnetic powder.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

L'invention concerne un composant de bobine dans lequel un fil peut être facilement enroulé autour d'une partie de noyau d'enroulement d'un noyau intégré même s'il existe un élément disposé à une distance prédéterminée de la partie de noyau d'enroulement　Un noyau (2) comporte un espace (11) pour interrompre une partie d'une boucle de flux magnétique traversant une partie noyau d'enroulement (3), une première partie bride (5), une seconde partie bride (6), et une partie plaque supérieure (7), l'espace (11) pénétrant dans le sens de la largeur (W) tout en étant défini par une première surface de paroi (13) et une seconde surface de paroi (14) se faisant face. Vu depuis l'extérieur du noyau (2) dans un sens dans lequel la première surface de paroi (13) et la seconde surface de paroi (14) se font face, une partie de la première surface de paroi (13) forme une partie d'extension (13p) qui s'étend dans le sens de la largeur (W) au-delà de la périphérie de la seconde surface de paroi (14). Afin de former la partie d'extension (13p) de la première surface de paroi (13), par exemple, un évidement (15) est disposé au niveau d'une partie où la seconde surface de paroi (14) est formée, ou une saillie est disposée au niveau d'une partie où la première surface de paroi (13) est formée.
PCT/JP2024/017023 2023-10-17 2024-05-08 Composant de bobine Pending WO2025083930A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2023-178572 2023-10-17
JP2023178572 2023-10-17

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WO2025083930A1 true WO2025083930A1 (fr) 2025-04-24

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000311816A (ja) * 1999-04-27 2000-11-07 Toko Inc コモンモードチョークコイル
WO2009044514A1 (fr) * 2007-10-03 2009-04-09 Hitachi Metals, Ltd. Composant bobine
US20100214050A1 (en) * 2006-07-14 2010-08-26 Opina Jr Gil Self-leaded surface mount inductors and methods
JP2018133354A (ja) * 2017-02-13 2018-08-23 Tdk株式会社 コイル部品

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000311816A (ja) * 1999-04-27 2000-11-07 Toko Inc コモンモードチョークコイル
US20100214050A1 (en) * 2006-07-14 2010-08-26 Opina Jr Gil Self-leaded surface mount inductors and methods
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