Coil component

Abstract

Provided is a coil component that suppresses the approach of a wire and a terminal electrode. A coil component (10) includes a winding core portion (11). A first flange portion (12) is provided at a first end in the axial direction of the winding core portion, and a second flange portion (14) is provided at a second end. A second terminal electrode is provided on the second end side in a first direction orthogonal to the axial direction of the first flange portion. A fourth terminal electrode is provided on the second end side in the first direction of the second flange portion. A first wire (30) and a second wire (40) are wound around the winding core portion. One end of the second wire is connected to the second terminal electrode, and the other end is connected to the fourth terminal electrode. When the amount of one turn of the second wire closest to the end connected to the fourth terminal electrode in the portion of the second wire wound around the winding core portion is referred to as the Nth turn, there is an amount of wire of at least two turns on the second flange portion side in the axial direction from the Nth turn of the second wire.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a coil component. BACKGROUND

[0002] The coil component described in Patent Document 1 has a winding core portion in a quadrangular prism shape. A first flange portion is provided at one end in an axial direction of the winding core portion, and a second flange portion is provided at the other end.

[0003] A first terminal electrode is provided at one end in a first direction orthogonal to the axial direction of the winding core portion in the first flange portion, and a second terminal electrode is provided at the other end in the first direction of the first flange portion. In addition, a third terminal electrode is provided at one end in the first direction of the second flange portion, and a fourth terminal electrode is provided at the other end in the first direction of the second flange portion.

[0004] A first wire and a second wire are wound around the winding core portion. One end of the first wire is connected to the first terminal electrode. The other end of the first wire is connected to the third terminal electrode. One end of the second wire is connected to the second terminal electrode. The other end of the second wire is connected to the fourth terminal electrode. In addition, the second wire extends from a corner line of the four corner lines of the winding core portion near the third terminal electrode toward the fourth terminal electrode in the vicinity of the second flange portion.

[0005] Patent Document 1: Japanese Patent No. 6578630

[0006] In the coil component described in Patent Document 1, the second wire is connected to the fourth terminal electrode in such a manner as to pass near the third terminal electrode. Therefore, when the coil component is mounted to a substrate or the like, solder attached to the third terminal electrode can possibly come into contact with the second wire. SUMMARY

[0007] To solve the above problems, the present application is a coil component, comprising: a winding core portion which is columnar; a first flange portion provided at a first end in an axial direction of the winding core portion; a second flange portion provided at a second end in the axial direction of the winding core portion; a first terminal electrode provided at an end portion on a first end side of the first flange portion in a first direction orthogonal to the axial direction; a second terminal electrode provided at an end portion on a second end side of the first flange portion in the first direction; a third terminal electrode provided at an end portion on a first end side of the second flange portion in the first direction; a fourth terminal electrode provided at an end portion on a second end side of the second flange portion in the first direction; a first wire wound around the winding core portion, with one end connected to the first terminal electrode and the other end connected to the third terminal electrode; and a second wire wound around the winding core portion, with one end connected to the second terminal electrode and the other end connected to the fourth terminal electrode, wherein when a direction orthogonal to both the axial direction and the first direction is referred to as a second direction, the first flange portion protrudes outward of the winding core portion in the second direction, the second flange portion protrudes outward of the winding core portion in the second direction, and a portion of the second wire including the end connected to the fourth terminal electrode extends from the third terminal electrode side to the fourth terminal electrode side with respect to a center of the winding core portion in the first direction, and in a portion of the first wire wound around the winding core portion, an amount of a turn closest to the end connected to the first terminal electrode side in a wire route of the first wire is referred to as a first turn, and an amount of a final turn closest to the end connected to the third terminal electrode side in the wire route of the first wire is referred to as an Mth turn, and in a portion of the second wire wound around the winding core portion, an amount of a turn closest to the end connected to the second terminal electrode side in a wire route of the second wire is referred to as a first turn, and an amount of a final turn closest to the end connected to the fourth terminal electrode side in the wire route of the second wire is referred to as an Nth turn, and at this time, there is a wire in an amount of at least two turns on the second flange portion side with respect to the Nth turn of the second wire in the axial direction.

[0008] According to the above structure, in the winding core portion of the coil component, there is a wire in an amount of two turns on the second flange portion side with respect to the Nth turn as a final turn of the second wire. In other words, there is a distance of at least two turns of a wire between the Nth turn of the second wire and the second flange portion. Thus, according to the above structure, when the coil component is mounted to a substrate or the like, contact of solder attached to the third terminal electrode with the second wire can be prevented.

[0009] According to one aspect of the present disclosure, short circuit of a coil component is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1is an elevational view of the coil member.

[0011] Figure 2 is a plan view of the coil member.

[0012] Figure 3 is a view showing a cross section along the 3-3 line in Figure 2 is a view showing the second end side in the second direction of the cross section.

[0013] Figure 4 is an explanatory view showing the wire of the coil member of the comparative example.

[0014] Figure 5 is an explanatory view showing the wire wound around the winding core portion of the modified example of the coil member.

[0015] Figure 6 is an explanatory view showing the wire wound around the winding core portion of the modified example of the coil member.

[0016] BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 10... coil member; 10C... core; 11... winding core portion; 12... first flange portion; 13... recessed portion; 14... second flange portion; 15... recessed portion; 16... top plate; 20... first terminal electrode; 21... second terminal electrode; 22... third terminal electrode; 23... fourth terminal electrode; 30... first wire; 40... second wire. DETAILED DESCRIPTION

[0018] Hereinafter, the coil member will be described with reference to the drawings.

[0019] As shown in Figure 1 , the coil member 10 is provided with a winding core portion 11 of a rectangular columnar shape. In the following description, a direction orthogonal to the axial direction of the winding core portion 11 and along the longer side of the rectangular cross section of the winding core portion 11 is referred to as the first direction. Also, a direction orthogonal to both the axial direction and the first direction is referred to as the second direction.

[0020] A first flange portion 12 is provided at the first end of the winding core portion 11 in the axial direction. The first flange portion 12 protrudes outward in the first direction and in the second direction from the winding core portion 11. A recessed portion 13 is recessed from the end surface on the first end side of the first flange portion 12 in the second direction. The recessed portion 13 is located at the central portion of the first flange portion 12 in the first direction. In the axial direction, the recessed portion 13 is open on both sides of the first flange portion 12. As a result, the portion of the first flange portion 12 on the first end side in the second direction becomes a shape divided into two prongs with the recessed portion 13 in between.

[0021] A second flange portion 14 is provided at the second end in the axial direction of the winding core portion 11. The second flange portion 14 has a shape that is symmetrical to the first flange portion 12 in the axial direction. That is, a recess portion 15 that is symmetrical to the recess portion 13 of the first flange portion 12 is also recessed on the end face of the second flange portion 14 in the second direction at the first end.

[0022] The winding core 11, the first flange 12, and the second flange 14 constitute the core 10C of the coil component 10. The core 10C is made of a non-conductive material. Specifically, the core 10C can be made of materials such as alumina, Ni-Zn ferrite, resin, and mixtures thereof.

[0023] A top plate 16 is installed on the second end side of the core 10C in the second direction. The top plate 16 is rectangular. The top plate 16 is installed on the core 10C and is positioned between the end face of the first flange portion 12 in the second direction and the end face of the second flange portion 14 in the second direction. The top plate 16 is made of the same material as the core 10C and together with the core 10C, forms a closed magnetic circuit.

[0024] A first terminal electrode 20 is stacked on the end face of the first flange portion 12 in the second direction, closer to the first end face than the recessed portion 13. A second terminal electrode 21 is stacked on the end face of the first flange portion 12 in the second direction, closer to the second end face than the recessed portion 13.

[0025] Similarly, a third terminal electrode 22 is stacked on the end face of the second flange portion 14 on the first end side in the second direction, closer to the first end side in the first direction than the recessed portion 15. A fourth terminal electrode 23 is stacked on the end face of the second flange portion 14 on the second end side in the second direction, closer to the second end side in the first direction than the recessed portion 15. Wherein, Figure 1 In the diagram, the first terminal electrode 20, the second terminal electrode 21, the third terminal electrode 22, and the fourth terminal electrode 23 are shown with double-dotted lines.

[0026] The first terminal electrode 20 to the fourth terminal electrode 23 are composed of a silver metal layer and copper, nickel, and tin plating layers applied to the surface of the metal layer. In this embodiment, the side of the coil component 10 that has the first terminal electrode 20 to the fourth terminal electrode 23 is the side facing the substrate when the coil component 10 is mounted to the substrate.

[0027] like Figure 2 As shown, a first wire 30 is wound around the winding core 11. Viewed from a cross-sectional angle orthogonal to the extending direction of the first wire 30, the first wire 30 is circular in shape. The first wire 30 is configured such that a 10-micrometer insulating film is wrapped around a 30-micrometer diameter copper wire. That is, the cross-sectional diameter of the first wire 30 is 50 micrometers.

[0028] One end of the first wire 30 is connected to the first terminal electrode 20. A portion of the first wire 30 including the end connected to the first terminal electrode 20 extends from the first terminal electrode 20 toward the second terminal electrode 21 side from the center of the winding core portion 11 in the first direction. In this embodiment, the first wire 30 extends from the first terminal electrode 20 toward the edge line of the four edge lines of the winding core portion 11 closest to the second terminal electrode 21.

[0029] When viewed from the first end side in the axis direction, the first wire 30 is wound clockwise on the winding core portion 11. The other end portion of the first wire 30 extends from the edge line of the four edge lines of the winding core portion 11 farthest from the fourth terminal electrode 23 toward the third terminal electrode 22 in the vicinity of the second flange portion 14 of the winding core portion 11. The other end of the first wire 30 is connected to the third terminal electrode 22.

[0030] The winding core portion 11 has the second wire 40 wound thereon. The second wire 40 is a wire having the same cross-sectional shape and size as the first wire 30.

[0031] One end of the second wire 40 is connected to the second terminal electrode 21. The second wire 40 extends from the second terminal electrode 21 toward the edge line of the four edge lines of the winding core portion 11 farthest from the first terminal electrode 20.

[0032] When viewed from the first end side in the axis direction, the second wire 40 is wound clockwise on the winding core portion 11, like the first wire 30. The other end portion of the second wire 40 extends from the position on the winding core portion 11 closer to the third terminal electrode 22 side from the center of the winding core portion 11 in the first direction toward the fourth terminal electrode 23 in the vicinity of the second flange portion 14 of the winding core portion 11. In this embodiment, the second wire 40 extends from the edge line of the four edge lines of the winding core portion 11 closest to the third terminal electrode 22 toward the fourth terminal electrode 23. The other end of the second wire 40 is connected to the fourth terminal electrode 23. That is, a portion of the second wire 40 including the end connected to the fourth terminal electrode 23 extends from the position on the winding core portion 11 closer to the third terminal electrode 22 side from the center of the winding core portion 11 in the first direction toward the fourth terminal electrode 23.

[0033] As Figure 3In the portion of the first wire 30 wound around the winding core 11, the amount of one turn closest to the end on the side connected to the first terminal electrode 20 on the route of the first wire 30 is referred to as the first turn. Specifically, the amount of one turn of the wire wound along the outer periphery of the winding core 11 from the portion where the wire contacts the winding core 11 is referred to as one turn. The turns of the first wire 30 wound around the winding core 11 are referred to as the second turn, the third turn, and so on as they go toward the side of the third terminal electrode 22. The final turn closest to the end on the side connected to the third terminal electrode 22 on the route of the first wire 30 is referred to as the Mth turn. That is, in the present embodiment, the first wire 30 is wound around the winding core 11 a total of M turns. In the present embodiment, the final turn of the first wire 30 refers to the turn wound last in the process of winding the first wire 30 around the winding core 11. In the present embodiment, the route of the first wire 30 refers to the path along the first wire 30. In the present embodiment, the first wire 30 is illustrated as being coated with dots and the turns are numbered. Figure 3 In the present embodiment, the second wire 40 is illustrated as being hollow and the turns are numbered.

[0034] The first turn of the first wire 30 is wound around the outer peripheral surface of the winding core 11 in the vicinity of the first flange portion 12. The second turn of the first wire 30 is adjacent to the first turn of the first wire 30 and is wound on the side of the second flange portion 14 in the axial direction. Similarly, the third turn to the M-2th turn of the first wire are wound around the outer peripheral surface of the winding core 11 in such a manner that the first wire 30 wound on the previous turn is adjacent and the number of turns is larger on the side of the second flange portion 14 in the axial direction.

[0035] In the portion of the second wire 40 wound around the winding core 11, the amount of one turn closest to the end on the side connected to the second terminal electrode 21 on the route of the second wire 40 is referred to as the first turn. The turns of the second wire 40 wound around the winding core 11 are referred to as the second turn, the third turn, and so on as they go toward the side of the fourth terminal electrode 23. The amount of one turn as the final turn closest to the end on the side connected to the fourth terminal electrode 23 on the route of the second wire 40 is referred to as the Nth turn. That is, the second wire 40 is wound around the winding core 11 a total of N turns. In the present embodiment, the number of turns M of the second wire 40 is the same as the number of turns N of the first wire 30. In the present embodiment, the final turn of the second wire 40 refers to the turn wound last in the process of winding the second wire 40 around the winding core 11. In the present embodiment, the route of the second wire 40 refers to the path along the second wire 40. In the present embodiment, the second wire 40 is illustrated as being hollow and the turns are numbered. Figure 3 In the present embodiment, the second wire 40 is illustrated as being hollow and the turns are numbered.

[0036] The first turn of the second wire 40 is wound around the outer peripheral surface of the winding core portion 11 in the vicinity of the first flange portion 12. Among them, the first turn of the second wire 40 is wound further to the first flange portion 12 side in the axial direction than the first turn of the first wire 30. In other words, the first turn of the first wire 30 is located further to the second flange portion 14 side in the axial direction than the first turn of the second wire 40.

[0037] In addition, in the axial direction, the first turn of the first wire 30 is wound apart from the first turn of the second wire 40. The distance L of the gap between the first turn of the first wire 30 and the first turn of the second wire 40 is ensured to be 50 micrometers or more. That is, the distance L of the gap between the first turn of the first wire 30 and the first turn of the second wire 40 is the diameter of the first wire 30 or more.

[0038] The second turn of the second wire 40 is located between the first turn of the first wire 30 and the second turn of the first wire 30, and is wound further to the radial outside of the winding core portion 11 than the first wire 30. That is, the second turn of the second wire 40 is wound in a state of contacting a concave-shaped portion formed by the outer surface of the first turn of the first wire 30 and the outer surface of the second turn of the first wire 30.

[0039] The third to (N-2)th turns of the second wire 40 are wound further to the second flange portion 14 side in the axial direction than the second wire 40 wound by the previous turn, on the radial outside of the first wire 30. As with the second turn of the second wire 40, the third to (N-2)th turns of the second wire 40 are wound in a state of contacting the first wire 30.

[0040] The (N-1)th turn of the second wire 40 is wound on the outer peripheral surface of the winding core portion 11 in abutment with the (M-2)th turn of the first wire 30. The (N-1)th turn of the second wire 40 is wound further to the second flange portion 14 side in the axial direction than the (M-2)th turn of the first wire 30.

[0041] The (M-1)th turn of the first wire 30 is wound on the outer peripheral surface of the winding core portion 11 in abutment with the (N-1)th turn of the second wire 40. The (M-1)th turn of the first wire 30 is wound further to the second flange portion 14 side in the axial direction than the (N-1)th turn of the second wire 40.

[0042] The Mth turn of the first wire 30, which is the final turn, is located between the (N-1)th turn of the second wire 40 and the (M-1)th turn of the first wire 30, and is wound further to the radial outside of the winding core portion 11 than these two wires. That is, the Mth turn of the first wire 30 is wound in a state of contacting a concave-shaped portion formed by the outer surface of the (N-1)th turn of the second wire 40 and the outer surface of the (M-1)th turn of the first wire 30.

[0043] The Nth turn of the 2nd wire 40 as the final turn is located between the M-2nd turn of the 1st wire 30 and the N-1st turn of the 2nd wire 40, and is wound further radially outward than these two wires from the winding core 11. That is, the Nth turn of the 2nd wire 40 is wound in a state of contacting a concave portion formed by the outer surface of the M-2nd turn of the 1st wire 30 and the outer surface of the N-1st turn of the 2nd wire 40.

[0044] With the above structure, when the Nth turn of the 2nd wire 40 is focused on, the Nth turn of the 2nd wire 40 is located on the 1st flange 12 side in the axial direction more than the Mth turn of the 1st wire 30 and the M-1st turn of the 1st wire 30. Also, on the 2nd flange 14 side in the axial direction from the Nth turn of the 2nd wire 40, there are the M-1st turn of the 1st wire 30, the Mth turn of the 1st wire 30, and the N-1st turn of the 2nd wire in an amount of three turns. In this embodiment, on the 2nd flange 14 side in the axial direction from the Nth turn of the 2nd wire 40, there are wires in a range of three radii of the wire.

[0045] Next, the effects of the present embodiment will be described.

[0046] In the vicinity of the 2nd flange 14, on the 2nd flange 14 side in the axial direction from the Nth turn of the 2nd wire 40, there are wires wound to the winding core 11 in an amount of three turns. Thus, as shown in FIG. 6, the other end portion of the 2nd wire 40 drawn out from the winding core 11 and connected to the 4th terminal electrode 23 is spaced apart from the 3rd terminal electrode 22 provided at the 2nd flange 14 by at least an amount of three diameters of the wire. Specifically, the distance from the 2nd flange 14 to the portion of the Nth turn of the 2nd wire 40 drawn out from the winding core 11 is greater than an amount of 1.5 times the diameter of the wire, and is 75 micrometers or more. Figure 2

[0047] Also, in the vicinity of the 1st flange 12, the 1st turn of the 2nd wire 40 is wound on the 1st flange 12 side in the axial direction from the 1st turn of the 1st wire 30. Also, the distance L of the gap between the 1st turn of the 1st wire 30 and the 1st turn of the 2nd wire 40 is 50 micrometers, which is an amount of one diameter of the wire. Thus, the one end portion of the 1st wire 30 drawn out from the winding core 11 and connected to the 1st terminal electrode 20 is spaced apart from the 2nd terminal electrode 21 provided at the 1st flange 12 by at least an amount of two diameters of the wire. Specifically, the distance from the 1st flange 12 to the portion of the 1st turn of the 1st wire 30 drawn out from the winding core 11 is greater than an amount of two times the diameter of the wire, and is 100 micrometers or more.

[0048] Next, the effects of the present embodiment will be described.

[0049] ​(1) An explanation will be given regarding the case where the first and second wires of the assumed coil component are wound differently from the coil component 10 of this embodiment. For example, such as Figure 4 As shown, in the coil component 10X, the Nth turn of the second wire 40X, which is the final turn, contacts the Mth turn of the first wire 30X, which is also the final turn, and wraps around to the vicinity of the second flange portion 14X. Figure 4 In the example shown, the Mth turn of the first wire 30X is wound around the outer peripheral surface of the winding core 11X on the side of the second flange 14X in the axial direction. Furthermore, only the Mth turn of the first wire 30X is positioned on the side of the second flange 14X closer to the Nth turn of the second wire 40X in the axial direction. In this case, the distance from the point where the Nth turn of the second wire 40X is drawn from the winding core 11X to the second flange 14X is the shortest, at 50 micrometers.

[0050] In this embodiment, as described above, three turns of wire are wound around the second flange 14 side, which is closer to the second flange 14 in the axial direction than the Nth turn of the second wire 40. In other words, a distance of three turns of wire is ensured between the Nth turn of the second wire 40 and the second flange 14. Figure 4 Compared to the example of coil component 10X shown, in the coil component 10 of this embodiment, the distance from the second wire 40 to the second flange portion 14 is longer. Therefore, it can be said that the position where the second wire 40 is drawn from the ridge of the winding core portion 11 is farther away from the third terminal electrode 22 in the axial direction. Therefore, when the coil component 10 is mounted to a substrate or the like, contact between the solder attached to the third terminal electrode 22 and the second wire 40 can be suppressed.

[0051] (2) In this embodiment, in the axial direction, the Nth turn of the second wire 40 is located closer to the first flange 12 than the (N-1)th turn of the second wire 40. That is, the Nth turn of the second wire 40 is wound back to the side closer to the first flange 12 in the axial direction than the (N-1)th turn of the previous turn. Therefore, it is easy to ensure the distance from the Nth turn of the second wire 40 to the second flange 14.

[0052] (3) In this embodiment, the Nth turn of the second wire 40 is wound in contact with the recessed portion formed by the outer side of the M-2th turn of the first wire 30 and the outer side of the N-1th turn of the second wire 40. In other words, in this embodiment, no other turns of the first wire 30 and the second wire 40 are wound radially outside the Nth turn of the second wire 40. That is, the portion of the Nth turn of the second wire 40 leading out from the winding core 11 is less susceptible to interference from other wires. Therefore, when the Nth turn of the second wire 40 is connected to the fourth terminal electrode 23, it is possible to suppress the stress on the second wire 40 caused by interference from other wires, and to suppress wire breakage caused by stress in the second wire 40.

[0053] (4) Assuming that, as in the example shown in FIG. 10, in the coil member 10X, the first turn of the first wire 30X is wound in contact with the first turn of the second wire 40X in the vicinity of the bobbin core portion 11X of the first flange portion 12X, in the example shown in FIG. 11, the first turn of the second wire 40X is wound on the first flange portion 12X side in the axis direction. Figure 4 Figure 4

[0054] In this example, only the first turn of the second wire 40X is wound on the first flange portion 12X side in the axis direction from the first turn of the first wire 30X. In this case, the distance from the first turn of the first wire 30X to the first flange portion 12X is also 50 micrometers, which is an amount of one diameter of the wire.

[0055] In the present embodiment, only the first turn of the second wire 40 is wound at an interval of an amount of one diameter of the wire on the first flange portion 12 side in the axis direction from the first turn of the first wire 30. That is, the distance from the first turn of the first wire 30 to the first flange portion 12 is also 100 micrometers, which is the shortest.

[0056] Thus, in the coil member 10 of the present embodiment, the distance from the first wire 30 to the first flange portion 12 is relatively large, compared with the example of the coil member 10X described above. In other words, it can be said that the position from which the first turn of the first wire 30 is drawn out of the edge line of the bobbin core portion 11 is farther away from the second terminal electrode 21 in the axis direction. Therefore, when the coil member 10 is mounted to a substrate or the like, contact of solder adhering to the second terminal electrode 21 with the first wire 30 can be suppressed.

[0057] The present embodiment can be implemented as follows. The present embodiment and the following modified examples can be implemented in combination with each other within a range in which there is no technical contradiction.

[0058] • In the above-described embodiment, the shape of the bobbin core portion 11 is not limited to the example of the above-described embodiment. For example, it can also be cylindrical, and can also be a polygonal shape other than quadrangular.

[0059] • In the above-described embodiment, the materials and shapes of the first terminal electrode 20 to the fourth terminal electrode 23 are not limited to the examples of the above-described embodiment. For example, the material of the plating layer of the first terminal electrode 20 to the fourth terminal electrode 23 can also be tin, nickel alloy, or the like. In addition, the first terminal electrode 20 to the fourth terminal electrode 23 can also not have a plating layer, and a metal layer having conductivity can be exposed to the outside.

[0060] ​​• In the above embodiment, the cross-sectional shape and size of the first wire 30 and the second wire 40 are not limited to the examples of the above embodiment. For example, the diameter of the copper wire can be larger, and a thicker insulating film can be applied.

[0061] • In the above structure, the wire present on the side of the second flange portion 14 than the Nth turn of the second wire 40 is not limited to the example of the above structure. For example, the Nth turn of the second wire 40 can also be present on the side of the second flange portion 14 than the N-1th turn. In this case, the distance between the second flange portion 14 and the second wire 40 is ensured from the diameter of the wire to about twice the diameter. Figure 5 In the example shown, the N-1th turn of the second wire 40 is wound on the outer peripheral surface of the winding core portion 11 in abutment with the M-2th turn of the first wire 30. In addition, the M-1th turn of the first wire 30 is wound on the outer peripheral surface of the winding core portion 11 in abutment with the N-1th turn of the second wire 40, and the Mth turn of the first wire 30 is wound on the outer peripheral surface of the winding core portion 11 in abutment with the M-1th turn of the first wire 30. Furthermore, the Nth turn of the second wire 40 is present between the N-1th turn of the second wire 40 and the M-1th turn of the first wire 30, and is wound on the outer peripheral surface of the winding core portion 11 on the radially outer side than these two wires. In the case of this example, there is an amount of wire of 2 turns present on the side of the second flange portion 14 than the Nth turn of the second wire 40. If there is an amount of wire of 2 turns or more present on the side of the second flange portion 14 than the Nth turn of the second wire 40, a distance of from the diameter of the wire to about twice the diameter is ensured between the second flange portion 14 and the second wire 40. Therefore, when the coil member 10 is mounted to a substrate or the like, contact of solder adhering to the third terminal electrode 22 with the second wire 40 can be suppressed.

[0062] • In the above structure, the wire present on the side of the second flange portion 14 than the Nth turn of the second wire 40 is not limited to the example of the above structure. For example, the Nth turn of the second wire 40 can also be present on the side of the second flange portion 14 than the N-1th turn. In this case, the distance between the second flange portion 14 and the second wire 40 is ensured from the diameter of the wire to about twice the diameter. Figure 6 In the example shown, the N-1th turn of the second wire 40 is wound on the outer peripheral surface of the winding core portion 11 in abutment with the M-2th turn of the first wire 30. In addition, the M-1th turn of the first wire 30 is wound on the outer peripheral surface of the winding core portion 11 in abutment with the N-1th turn of the second wire 40, and the Mth turn of the first wire 30 is wound on the outer peripheral surface of the winding core portion 11 in abutment with the M-1th turn of the first wire 30. Furthermore, the Nth turn of the second wire 40 is present between the M-2th turn of the first wire 30 and the N-1th turn of the second wire 40, and is wound on the outer peripheral surface of the winding core portion 11 on the radially outer side than these two wires. In the case of this example, there is an amount of wire of 3 turns present on the side of the second flange portion 14 than the Nth turn of the second wire 40. As in this example or the above embodiment, when the Nth turn of the second wire 40 is present on the side of the first flange portion 12 than the N-1th turn, it is easy to ensure a distance between the Nth turn of the second wire 40 and the second flange portion 14.

[0063] • In the above-described embodiment, it is also possible that the M-1th turn of the first wire 30 and the Mth turn are wound at the first flange portion 12 side in the axial direction than the Nth turn of the second wire 40. In this case, for example, the N-2th turn and the N-1th turn of the second wire 40 are disposed at the second flange portion 14 side than the Nth turn of the second wire 40.

[0064] • In the above-described embodiment, the Nth turn of the second wire 40 and the 2nd to N-2th turns of the second wire 40 are wound radially outside the first wire 30, but there are also cases where partial turns among these turns are wound to the outer peripheral surface of the winding core portion 11. For example, there are also cases where the 2nd turn of the second wire 40 is wound to the outer peripheral surface of the winding core portion 11 by falling between the 1st and 2nd turns of the first wire 30. Similarly, there are also cases where partial turns of the first wire 30 are wound radially outside other wires by being placed on the other turns of the first wire 30 and the second wire 40.

[0065] • In the above-described embodiment, it is also possible that the 1st turn of the first wire 30 and the 1st turn of the second wire 40 are wound to the winding core portion 11 in a state of contacting each other. In this case, the wires are wound to the winding core portion 11 while contacting each other, and thus an increase in the inductance value of the coil member 10 can be expected.

[0066] • In the above-described embodiment, it is also possible that the distance L of the gap between the 1st turn of the first wire 30 and the 1st turn of the second wire 40 is smaller than the diameter of the first wire 30.

[0067] • The total number of turns M of the first wire 30 and the total number of turns N of the second wire 40 can also be different. For example, in a case where the first wire 30 and the second wire 40 are simultaneously wound to the core 10C, it is easy to make the total number of turns of both the same. In a case where the first wire 30 is wound to the core 10C and then the second wire 40 is wound, it is easy to make the total number of turns of both different.

Claims

1. A coil component, wherein the coil component comprises: a winding core portion that is columnar; a first flange portion provided at a first end in an axial direction of the winding core portion; a second flange portion provided at a second end in the axial direction of the winding core portion; a first terminal electrode provided at an end portion on a first end side of the first flange portion in a first direction that is orthogonal to the axial direction; a second terminal electrode provided at an end portion on a second end side of the first flange portion in the first direction; a third terminal electrode provided at an end portion on a first end side of the second flange portion in the first direction; a fourth terminal electrode provided at an end portion on a second end side of the second flange portion in the first direction; a first wire wound around the winding core portion, and having one end connected to the first terminal electrode and the other end connected to the third terminal electrode; and a second wire wound around the winding core portion, and having one end connected to the second terminal electrode and the other end connected to the fourth terminal electrode, when a direction orthogonal to both the axial direction and the first direction is referred to as a second direction, the first flange portion protrudes outward of the winding core portion in the second direction, the second flange portion protrudes outward of the winding core portion in the second direction, a portion of the second wire including the end connected to the fourth terminal electrode extends from the third terminal electrode side toward the fourth terminal electrode than a center of the winding core portion in the first direction, in the portion of the first wire wound around the winding core portion, an amount of a turn closest to the end of the first wire on the side connected to the first terminal electrode is referred to as a first turn, and an amount of a final turn closest to the end of the first wire on the side connected to the third terminal electrode is referred to as an Mth turn, and in the portion of the second wire wound around the winding core portion, an amount of a turn closest to the end of the second wire on the side connected to the second terminal electrode is referred to as a first turn, and an amount of a final turn closest to the end of the second wire on the side connected to the fourth terminal electrode is referred to as an Nth turn, and at this time, there is a wire in an amount of at least two turns on the second flange portion side in the axial direction than the Nth turn of the second wire.

2. The coil component according to claim 1, wherein the Nth turn of the second wire is located on the first flange portion side in the axial direction than the Mth turn of the first wire and the M-1th turn of the first wire.

3. The coil component according to claim 1 or 2, wherein the Nth turn of the second wire is located on the first flange portion side in the axial direction than the N-1th turn of the second wire.

4. The coil component according to claim 1 or 2, wherein a portion of the first wire including the end connected to the first terminal electrode extends from the first terminal electrode side toward the second terminal electrode than a center of the winding core portion in the first direction, ​ The first turn of the first wire is located closer to the second flange portion side than the first turn of the second wire in the axial direction.

5. The coil member according to claim 4, wherein The first turn of the first wire is separated from the first turn of the second wire in the axial direction.

6. The coil member according to claim 5, wherein The first wire has a circular shape in a cross-sectional view taken orthogonal to a direction in which the first wire extends, A distance of a gap between the first turn of the first wire and the first turn of the second wire in the axial direction is equal to or greater than a diameter of the first wire.

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