JP2020191324A - Coil component - Google Patents

Abstract

To provide a coil component capable of obtaining a high inductance while mounting a wire wound around a winding core portion without directly facing the wire and the winding core portion each other.SOLUTION: A coil component 1 includes a magnetic core 10 in which a wire W1 is wound around a wiring core portion 13, a plate-shaped member 20 that covers the magnetic core 10 from a z direction, and terminal fittings 41 and 42 that are fixed to the plate-shaped member 20 and to which one end and the other end of the wire W1 are connected. A width D2 of the plate-shaped member 20 in a y direction in a region A2 where the terminal fittings 41 and 42 are fixed is narrower than a width D1 of flange portions 11 and 12 in a y direction. According to this, since it is not necessary to provide openings in the flange portions 11 and 12 of the magnetic core 10, it is possible to obtain a high inductance. Further, since the width D2 of the plate-shaped member 20 at a portion where the terminal electrodes of the terminal fittings 41 and 42 are fixed is reduced, the amount of protrusion of the wire or the terminal fitting in the y direction can be reduced.SELECTED DRAWING: Figure 4

Description

The present invention relates to a coil component, and more particularly to a coil component having a structure in which a plate-shaped member is provided below a winding core portion around which a wire is wound and a terminal electrode is provided on the plate-shaped member.

The coil component described in Patent Document 1 has a plate-shaped magnetic core in which two wires are wound and an E-shaped magnetic core adhered to the plate-shaped magnetic core, and is provided at an end of the wire. By removing the insulating coating, the end of the wire itself is used as a terminal electrode.

The coil component described in Patent Document 2 includes a drum-shaped magnetic core having a winding core portion around which two wires are wound and a pair of flange portions, and a C-shaped magnetic core that covers the winding core portion from three directions. One end of the two wires is connected to a terminal electrode provided on the first flange, and the other end of the two wires is provided on the second flange. Has a configuration connected to.

However, since the coil component described in Patent Document 1 has a configuration in which most of the wires are exposed, it is difficult to ensure high reliability. Further, in the coil component described in Patent Document 2, since the wire wound around the winding core portion and the mounting substrate directly face each other, a decrease in reliability in this portion becomes a problem.

On the other hand, in the coil component described in Patent Document 3, since the plate-shaped magnetic core is arranged below the drum-shaped magnetic core, the wire wound around the winding core and the mounting substrate are directly connected. I never face each other.

JP-A-2007-165407 Japanese Unexamined Patent Publication No. 2008-10578 Japanese Unexamined Patent Publication No. 2010-10354

However, in the coil component described in Patent Document 3, a plurality of openings are formed in the flange portion of the drum-shaped magnetic core, and the wire and the terminal electrode are connected by passing the wire through the openings. Here, since the opening provided in the flange of the magnetic core has a wide direction orthogonal to the direction in which the magnetic flux flows, a large amount of magnetic flux is divided to increase the magnetic resistance, and as a result, the inductance decreases. There was a problem.

Therefore, an object of the present invention is to provide a coil component that can be mounted without the wire wound around the winding core and the mounting substrate directly facing each other and can obtain a high inductance.

The coil component according to the present invention includes a winding core portion whose axial direction is the first direction, a first flange portion located on one end side of the winding core portion in the first direction, and the other in the first direction of the winding core portion. Covers the magnetic core with a second flange located on the end side, the first wire wound around the core, and the magnetic core from one side in a second direction orthogonal to the first direction. As described above, the first plate-shaped member fixed to the first and second flange portions and the first plate-shaped member fixed to the first plate-shaped member at a position not overlapping with the first and second flange portions, of the first wire. The width in the third direction orthogonal to the first and second directions of the first and second collar portions is provided with the first and second terminal electrodes having one end and the other end connected to each other. It is the width of 1, and the width of the first plate-shaped member in the third direction in the portion where the first and second terminal electrodes are fixed is a second width narrower than the first width. It is a feature.

According to the present invention, reliability can be improved by mounting the first plate-shaped member so as to be interposed between the mounting substrate and the winding core portion. Moreover, since the first and second terminal electrodes are provided at positions that do not overlap with the first and second flanges, it is not necessary to provide an opening in the flange of the magnetic core, thereby providing high inductance. It becomes possible to obtain. Further, since the width of the first plate-shaped member in the portion where the first and second terminal electrodes are fixed is reduced, the first and second wires and the first and second terminal electrodes are used. The amount of protrusion in the third direction can be reduced.

In the present invention, the width of the first plate-shaped member in the portion where the first and second flange portions are fixed may be wider than the second width. According to this, it becomes possible to more firmly fix the first plate-shaped member and the first and second flange portions.

The coil component according to the present invention is fixed to the first plate-shaped member at a position where it does not overlap with the second wire wound around the winding core portion and the first and second flange portions, and one end of the second wire. The width of the first plate-like member in the third direction at the portion where the third and fourth terminal electrodes are fixed is further provided with the third and fourth terminal electrodes to which the other ends are connected, respectively. , The second width may be used. According to this, the amount of protrusion of the third and fourth wires and the third and fourth terminal electrodes in the third direction can be reduced.

In the present invention, the third direction of the first plate-shaped member in the central region located between the portion where the first and second flange portions are fixed and the portion where the third and fourth flange portions are fixed. The width in may be a third width wider than the second width. According to this, the positioning of the first to fourth terminal electrodes becomes easy.

In the present invention, the third width may be narrower than the first width. According to this, interference between the central region of the first plate-shaped member and the first to fourth terminal electrodes is less likely to occur.

In the present invention, the first plate-shaped member extends in the first and second directions, the upper surface facing the magnetic core, the lower surface located on the opposite side of the upper surface, and the first and opposite sides. It has a second side surface, and the first and third terminal electrodes are composed of terminal fittings arranged in a first direction along the first side surface so as to sandwich the upper surface and the lower surface, and the second and third terminal electrodes are arranged. The terminal electrode 4 may consist of terminal fittings arranged in the first direction along the second side surface so as to sandwich the upper surface and the lower surface. According to this, it is possible to further improve the connection reliability between the wire and the terminal electrode.

In the present invention, the terminal fitting may have a fixing portion fixed to the first plate-shaped member and a leaf spring portion connected to the fixing portion without contacting the first plate-shaped member. Absent. According to this, even when the coil component is mounted on the mounting board and then the mounting board is deformed such as bending, the stress applied to the first plate-shaped member by the leaf spring portion is relaxed. This makes it possible to prevent damage to the first plate-shaped member due to deformation of the mounting substrate.

In the present invention, the first plate-shaped member may be made of a magnetic material. According to this, it is possible to increase the inductance of the coil component.

The coil component according to the present invention may further include a second plate-shaped member fixed to the first and second flange portions so as to cover the magnetic core from the other side in the second direction. According to this, since the winding core portion is covered from the upper and lower two directions, it is possible to further improve the reliability. Further, in the mounting process, since the second plate-shaped member can be sucked by using the picking tool, the handling of the coil component becomes easy.

In the present invention, the second plate-shaped member may be made of a magnetic material. According to this, it is possible to further increase the inductance of the coil component.

As described above, according to the present invention, a high inductance is obtained in a coil component having a structure in which a plate-shaped member is provided below the winding core portion around which the wire is wound and a terminal electrode is provided on the plate-shaped member. At the same time, it is possible to reduce the amount of protrusion of wires and terminal electrodes.

FIG. 1 is a schematic perspective view showing the appearance of the coil component 1 according to a preferred embodiment of the present invention. FIG. 2 is a substantially disassembled perspective view of the coil component 1. 3A and 3B are schematic perspective views for explaining the shape of the first plate-shaped member 20, FIG. 3A is a view seen from the upper surface 21 side, and FIG. 3B is a view seen from the lower surface 22 side. FIG. 4 is a plan view of the first plate-shaped member 20 in a state where the terminal fittings 41 to 44 are attached. FIG. 5 is a schematic diagram for explaining an example of the winding pattern of the wires W1 and W2. FIG. 6 is a schematic plan view showing a state in which the coil component 1 is mounted on the mounting board 8. FIG. 7 is a schematic perspective view for explaining the shapes of the terminal fittings 41 to 44. FIG. 8 is a schematic cross-sectional view for explaining a state in which the terminal fitting 41 is fixed to the first plate-shaped member 20. FIG. 9 is a plan view of the plate-shaped member 20A according to the first modification. FIG. 10 is a plan view of the plate-shaped member 20B according to the second modification. FIG. 11 is a plan view of the plate-shaped member 20C according to the third modification.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic perspective view showing the appearance of the coil component 1 according to a preferred embodiment of the present invention. Further, FIG. 2 is a substantially disassembled perspective view of the coil component 1.

The coil component 1 according to the present embodiment is a coil component suitable to be used as a common mode filter or a coupling inductor for a power supply, and as shown in FIGS. 1 and 2, a drum-shaped magnetic core 10 and magnetism It has a first plate-shaped member 20 that covers the core 10 from below, a second plate-shaped member 30 that covers the magnetic core 10 from above, and a pair of wires W1 and W2.

The drum-shaped magnetic core 10 includes a first flange portion 11, a second flange portion 12, and a winding core portion 13 located between them. A pair of wires W1 and W2 are wound around the winding core portion 13 so that the coil axis direction is the x direction. One end W1a and the other end W1b of the wire W1 are connected to the terminal fittings 41 and 42, respectively, and one end W2a and the other end W2b of the wire W2 are connected to the terminal fittings 43 and 44, respectively. Further, the first plate-shaped member 20 is a magnetic member that covers the magnetic core 10 from one side in the z direction, and constitutes a mounting surface facing the mounting substrate at the time of mounting. The second plate-shaped member 30 is a magnetic member that covers the magnetic core 10 from the other side in the z direction, and also functions as a suction surface that is attracted by the pickup tool at the time of mounting. As a result, the magnetic core 10 is sandwiched from above and below by the first plate-shaped member 20 and the second plate-shaped member 30. As the material of the magnetic core 10, the first plate-shaped member 20, and the second plate-shaped member 30, a magnetic material having a high magnetic permeability such as ferrite, a metal magnetic material, and a resin containing a magnetic material is used. However, for the first and second plate-shaped members 20 and 30, non-magnetic materials such as resin may be used instead of magnetic materials.

The first plate-shaped member 20 has an upper surface 21 that covers the magnetic core 10, a lower surface 22 that is located on the opposite side of the upper surface 21, and first and second side surfaces 23 and 24 that are located on opposite sides of the upper surface 21. There is. The upper surface 21 and the lower surface 22 form an xy surface, and the side surfaces 23 and 24 form an xz surface. The second plate-shaped member 30 has a lower surface 31 that covers the magnetic core 10 and an upper surface 32 that is located on the opposite side of the lower surface 31. The lower surface 31 and the upper surface 32 form an xy surface.

The magnetic core 10 and the first plate-shaped member 20 are fixed to each other by the adhesives 51 and 52. The adhesive 51 adheres the first flange portion 11 of the magnetic core 10 and the upper surface 21 of the first plate-shaped member 20. The adhesive 52 adheres the second flange portion 12 of the magnetic core 10 to the upper surface 21 of the first plate-shaped member 20. The magnetic core 10 and the second plate-shaped member 30 are fixed to each other by the adhesives 53 and 54. The adhesive 53 adheres the first flange portion 11 of the magnetic core 10 and the lower surface 31 of the second plate-shaped member 30. The adhesive 54 adheres the second flange portion 12 of the magnetic core 10 to the lower surface 31 of the second plate-shaped member 30. Here, if the adhesives 51 to 54 containing a magnetic material are used, the magnetic resistance between the magnetic core 10 and the first and second plate-shaped members 20 and 30 is reduced, so that the inductance of the coil component 1 can be reduced. It becomes possible to increase.

3A and 3B are schematic perspective views for explaining the shape of the first plate-shaped member 20, FIG. 3A is a view seen from the upper surface 21 side, and FIG. 3B is a view seen from the lower surface 22 side. Further, FIG. 4 is a plan view of the first plate-shaped member 20 in a state where the terminal fittings 41 to 44 are attached.

As shown in FIGS. 3 and 4, the first plate-shaped member 20 has two groove portions 25 and 26 extending in the y direction. Grooves 25 and 26 are provided over the upper surface 21 and the side surfaces 23 and 24. On the other hand, the lower surface 22 is flat. The terminal fitting 41 is fixed to the portion of the groove 25 corresponding to the side surface 23, the terminal fitting 42 is fixed to the portion of the groove 25 corresponding to the side surface 24, and the terminal fitting 43 corresponds to the side surface 23 of the groove 26. The terminal fitting 44 is fixed to the portion of the groove 26 corresponding to the side surface 24. In this way, the terminal fittings 41 and 43 are arranged in the x direction along the side surface 23, and the terminal fittings 42 and 44 are arranged in the x direction along the side surface 24.

As shown in FIG. 4, the width of the first plate-shaped member 20 in the y direction is the width D0 in the region A0 where the first and second flange portions 11 and 12 are fixed, and the groove portions 25 and 26 are provided. It has a width D2 in the formed region A2 and a width D3 in the central region A3 located between the groove 25 and the groove 26. Then, when the width of the first and second flange portions 11 and 12 in the y direction is D1, in the present embodiment,
D0 = D1>D3> D2
Is satisfied. As described above, the first plate-shaped member 20 has the smallest width D2 in the region A2 provided with the groove portions 25 and 26, and the terminal fittings 41 to 44 are fixed to this portion. The setback amount D4 of the region A2 with respect to the region A0 is preferably set to an amount so that the wires W1 and W2 and the terminal fittings 41 to 44 do not protrude when viewed from the z direction. That is, it is preferable to set the setback amount D4 so that the width of the region A2 including the wires W1 and W2 and the terminal fittings 41 to 44 is equal to or less than the maximum width D0 of the first plate-shaped member 20. Since FIG. 4 shows the state before the terminal fittings 41 to 44 are bent, a part of the terminal fittings 41 to 44 protrudes in the y direction from the area A0, but the terminal fitting 41 When the ends of the wires W1 and W2 are fixed by bending a part of the wires W1 and W2, the wires W1 and W2 and the terminal fittings 41 to 44 do not protrude in the y direction.

In the present embodiment, the width D3 of the region A3 is slightly larger than the width D2 of the region A2. As a result, on the side surfaces 23 and 24 of the first plate-shaped member 20, a step in the y direction is formed at the boundary portion between the regions A2 and the region A3, so that the terminal fittings 41 to 44 can be easily positioned in the x direction. It becomes. Further, since the width D3 of the region A3 is smaller than the width D0 of the region A0, interference between the wires W1 and W2 and the region A3 is unlikely to occur.

On the other hand, the depths of the grooves 25 and 26 on the upper surface 21 in the z direction may be about the same as the thickness of the terminal fittings 41 to 44.

FIG. 5 is a schematic diagram for explaining an example of the winding pattern of the wires W1 and W2.

In the example shown in FIG. 5, the winding direction from one end W1a of the wire W1 to the other end W1b is the same as the winding direction from one end W2a of the wire W2 to the other end W2b, and therefore, from one end W1a of the wire W1. The direction of the magnetic flux generated when a current is passed toward the other end W1b is the same as the direction of the magnetic flux generated when a current is passed from one end W2a of the wire W2 toward the other end W2b. Here, one end W1a and the other end W1b of the wire W1 are connected to the terminal fittings 41 and 42, respectively, and one end W2a and the other end W2b of the wire W2 are connected to the terminal fittings 43 and 44, respectively. As a result, the coil component 1 according to the present embodiment functions as a common mode filter having the terminal fittings 41 and 43 as a pair of input side terminals and the terminal fittings 42 and 44 as a pair of output side terminals.

FIG. 6 is a schematic plan view showing a state in which the coil component 1 according to the present embodiment is mounted on the mounting board 8.

As shown in FIG. 6, a pair of power supply lines L1 and L3 and a pair of power supply lines L2 and L4 are formed on the mounting board 8. The pair of power supply lines is a power supply line to which one is given a reference potential (for example, a ground potential) and the other is a power supply line to which a power supply potential is given. Then, the coil component 1 according to the present embodiment is mounted on the mounting board 8 so that the terminal fittings 41 to 44 and the power supply lines L1 to L4 are connected to each other. As a result, load currents in opposite directions flow between the terminal fittings 41 and 42 and between the terminal fittings 43 and 44. Then, for example, the common mode noise superimposed on the pair of power supply lines L1 and L3 is removed by the coil component 1, and the power supply voltage from which the common mode noise is removed is output from the pair of power supply lines L2 and L4. As is clear from FIG. 6, in the coil component 1 according to the present embodiment, the coil axis (x direction) is perpendicular to the extending direction (y direction) of the power supply lines L1 to L4.

As described above, the coil component 1 according to the present embodiment can obtain high reliability because the magnetic core 10 is sandwiched between the first and second plate-shaped members 20 and 30 from the vertical direction. In particular, if one or both of the first and second plate-shaped members 20 and 30 are made of a magnetic material, a closed magnetic path having a small magnetic resistance is formed. This makes it possible to obtain a high impedance for the common mode component. Moreover, since the terminal fittings 41 to 44 are fixed at positions that do not overlap with the flange portions 11 and 12 when viewed from the z direction, it is not necessary to form an opening for passing the wires W1 and W2 in the magnetic core 10. .. This makes it possible to prevent an increase in magnetic resistance due to the formation of an opening in the magnetic core 10.

Further, in the present embodiment, since the width of the first plate-shaped member 20 in the y direction is reduced in the region A2 where the terminal fittings 41 to 44 are fixed, the terminal fittings 41 to 44 are mounted on the side surfaces 23 and 24. Although it is fixed to, the amount of protrusion of the terminal fittings 41 to 44 and the wires W1 and W2 in the y direction can be reduced, and preferably the terminal fittings 41 to 44 and the wires W1 and W2 in the y direction. It is possible to eliminate the protrusion.

FIG. 7 is a schematic perspective view for explaining the shapes of the terminal fittings 41 to 44.

As shown in FIG. 7, the terminal fittings 41 to 44 include a fixing portion 60 including flat plate portions 61 to 63, a leaf spring portion 70 connected to the fixing portion 60, and a connecting wire portion 80 including tabs 81 and 82. It can be produced by punching a metal plate made of copper (Cu) or the like and then bending it. The flat plate portions 61 and 62 and the leaf spring portion 70 have the xy surface as the main surface, and the flat plate portion 63 has the xz surface as the main surface.

The flat plate portion 61 and the flat plate portion 62 constituting the fixed portion 60 are parallel to each other, and the distance between the flat plate portion 61 and the flat plate portion 62 is the thickness of the first plate-shaped member 20 in the portion where the groove portions 25 and 26 are provided. It's almost the same. The flat plate portion 63 is a portion connecting the flat plate portion 61 and the flat plate portion 62, and extends perpendicularly to the flat plate portions 61 and 62. The leaf spring portion 70 is connected to the flat plate portion 62 of the fixed portion 60 and extends in parallel with the flat plate portion 61. The distance between the leaf spring portion 70 and the flat plate portion 61 is larger than the thickness of the first plate-shaped member 20 in the portions where the groove portions 25 and 26 are provided.

With this configuration, for example, when the terminal fitting 41 is attached to the first plate-shaped member 20, the flat plate portion 61 comes into contact with the upper surface 21 of the first plate-shaped member 20, as shown in FIG. 8, which is a partial yz cross section. , The flat plate portion 62 is in contact with the lower surface 22 of the first plate-shaped member 20. As a result, the terminal fitting 41 is fitted to the first plate-shaped member 20 so as to sandwich the first plate-shaped member 20. In order to fix the terminal fitting 41 and the first plate-shaped member 20 more firmly, an adhesive may be interposed between the terminal fitting 41 and the first plate-shaped member 20. In this case, it is preferable that the flat plate portion 61 and the upper surface 21 of the first plate-shaped member 20 are adhered with an adhesive, and the flat plate portion 63 and the side surface 23 of the first plate-shaped member 20 are adhered with an adhesive. According to this, since the adhesive is provided in a portion having a large facing area, sufficient adhesive strength can be ensured. Although only the terminal fitting 41 is shown in FIG. 8, the same applies to the other terminal fittings 42 to 44.

Further, as shown in FIG. 8, the leaf spring portion 70 is a flat plate in a state where the leaf spring portion 70 is separated from the lower surface 22 of the first plate-shaped member 20 by a predetermined distance in the z direction without being in contact with the first plate-shaped member 20. It is held by the part 62. The leaf spring portion 70 is a portion connected to the land pattern provided on the mounting substrate 8 shown in FIG. 6 via solder. As described above, in the present embodiment, the leaf spring portion 70 is connected to the land pattern, which imparts springiness to the mechanical connection between the mounting board 8 and the coil component 1, so that the mounting board 8 has a spring property. Even when deformation such as bending occurs, the stress due to this is not directly transmitted to the first plate-shaped member 20, but is transmitted through the terminal fittings 41 to 44 having spring properties. The stress applied to the plate-shaped member 20 is significantly reduced.

The tabs 81 and 82 constituting the connecting wire portion 80 can be bent inward, and the ends of the wires W1 and W2 are arranged in the area surrounded by the flat plate portion 63 and the tabs 81 and 82 before being completely bent. Then, by bending the tabs 81 and 82 inward in this state, the ends of the wires W1 and W2 can be fixed to the terminal fittings 41 to 44 so as to be sandwiched between the flat plate portion 63 and the tabs 81 and 82. .. After sandwiching the ends of the wires W1 and W2 between the flat plate portions 63 and the tabs 81 and 82, the ends of the wires W1 and W2 and the tabs 81 and 82 may be welded.

As described above, in the coil component 1 according to the present embodiment, since the width of the first plate-shaped member 20 in the y direction is reduced in the region A2 where the terminal fittings 41 to 44 are fixed, the terminal fitting 41 Although ~ 44 is fixed to the side surfaces 23 and 24, the amount of protrusion of the terminal fittings 41 to 44 and the wires W1 and W2 in the y direction can be reduced, preferably the terminal fittings 41 to 44 and the wires. It is possible to eliminate the protrusion of W1 and W2 in the y direction.

Moreover, although the first plate-shaped member 20 constitutes the mounting surface, the terminal fittings 41 to 44 fixed to the first plate-shaped member 20 have a spring property, so that the first plate Even when a fragile material such as ferrite is used as the material of the shaped member 20, it is possible to prevent the first plate-shaped member 20 from being damaged due to the deformation of the mounting substrate 8.

FIG. 9 is a plan view of the plate-shaped member 20A according to the first modification. The plate-shaped member 20A shown in FIG. 9 is different from the plate-shaped member 20 described above in that the width D3 in the central region A3 is equal to the width D0 in the region A0. As illustrated by the plate-shaped member 20A shown in FIG. 9, in the present invention, it is not essential that the width D3 in the central region A3 is narrower than the width D0 in the region A0.

FIG. 10 is a plan view of the plate-shaped member 20B according to the second modification. The plate-shaped member 20B shown in FIG. 10 is different from the plate-shaped member 20 described above in that the width D3 in the central region A3 is equal to the width D2 in the region A2. As illustrated by the plate-shaped member 20B shown in FIG. 10, in the present invention, it is not essential that the width D3 in the central region A3 is wider than the width D2 in the region A2.

FIG. 11 is a plan view of the plate-shaped member 20C according to the third modification. The plate-shaped member 20C shown in FIG. 11 is different from the plate-shaped member 20 described above in that the width D0 in the region A0 is equal to the width D3 in the region A3. That is, the width D0 in the region A0 is smaller than the width D1 of the collar portions 11 and 12 in the y direction. As illustrated by the plate-shaped member 20C shown in FIG. 11, in the present invention, it is not essential that the width D0 in the region A0 is the same as the width D1 in the y direction of the collar portions 11 and 12.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the gist of the present invention, and these are also the present invention. It goes without saying that it is included in the range.

For example, in the above embodiment, the terminal electrodes on which the ends of the wires W1 and W2 are formed are composed of terminal fittings, but it is not essential to use the terminal fittings in the present invention. However, by using the terminal metal fitting as the terminal electrode, it is possible to further improve the connection reliability between the wire and the terminal electrode.

Further, in the above embodiment, the second plate-shaped member 30 that covers the magnetic core 10 from above is used, but it is not essential to use such a plate-shaped member 30 in the present invention. However, by using such a plate-shaped member 30, not only the reliability can be further improved, but also the second plate-shaped member 30 can be adsorbed by using a picking tool in the mounting process, so that the coil. Easy handling of parts.

1 Coil component 8 Mounting board 10 Magnetic core 11 1st wire 12 2nd wire 13 Core part 20, 20A to 20C 1st plate-like member 21 Top surface 22 Top surface 22 Bottom surface 23, 24 Side surface 25, 26 Groove 30 Plate-shaped member 31 Lower surface 32 Upper surface 41-44 Terminal metal fittings 51-54 Adhesive 60 Fixing part 61-63 Flat plate part 70 Leaf spring part 80 Joint wire part 81, 82 Tab L1 to L4 Power supply line W1, W2 Wire W1a, One end of W2a wire W1b, the other end of W2b wire

Claims (10)

A winding core portion whose axial direction is the first direction, a first flange portion located on one end side of the winding core portion in the first direction, and the other end of the winding core portion in the first direction. A magnetic core with a second collar located on the side,
The first wire wound around the core portion and
A first plate-shaped member fixed to the first and second flanges so as to cover the magnetic core from one side in a second direction orthogonal to the first direction.
With the first and second terminal electrodes fixed to the first plate-shaped member at positions not overlapping with the first and second flange portions, and one end and the other end of the first wire are connected, respectively. With,
The width of the first and second collar portions in the third direction orthogonal to the first and second directions is the first width.
The width of the first plate-shaped member in the third direction at the portion where the first and second terminal electrodes are fixed is a second width narrower than the first width. Coil parts to do. The first aspect of claim 1, wherein the width of the first plate-shaped member in the portion where the first and second flange portions are fixed is wider than the second width. Coil parts. The second wire wound around the core portion and
With the third and fourth terminal electrodes fixed to the first plate-shaped member at positions not overlapping with the first and second flange portions, and one end and the other end of the second wire are connected, respectively. , With more
According to claim 1 or 2, the width of the first plate-shaped member in the portion where the third and fourth terminal electrodes are fixed in the third direction is the second width. Described coil parts. The third direction of the first plate-like member in the central region located between the portion where the first and second flange portions are fixed and the portion where the third and fourth flange portions are fixed. The coil component according to claim 3, wherein the width of the coil component is a third width wider than the second width. The coil component according to claim 4, wherein the third width is narrower than the first width. The first plate-shaped member extends in the first and second directions, the upper surface facing the magnetic core, the lower surface located on the opposite side of the upper surface, and the first and opposite sides. Has a second aspect and
The first and third terminal electrodes are composed of terminal fittings arranged in the first direction along the first side surface so as to sandwich the upper surface and the lower surface.
A third to third aspect of the present invention, wherein the second and fourth terminal electrodes are composed of terminal fittings arranged in the first direction along the second side surface so as to sandwich the upper surface and the lower surface. The coil component according to any one of 5. A claim characterized in that the terminal fitting has a fixing portion fixed to the first plate-shaped member and a leaf spring portion connected to the fixing portion without contacting the first plate-shaped member. Item 6. The coil component according to item 6. The coil component according to any one of claims 1 to 7, wherein the first plate-shaped member is made of a magnetic material. Any of claims 1 to 8, further comprising a second plate-shaped member fixed to the first and second flange portions so as to cover the magnetic core from the other side in the second direction. The coil component described in item 1. The coil component according to claim 9, wherein the second plate-shaped member is made of a magnetic material.

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