COIL COMPONENT

Abstract

Disconnection of a wire near a metal terminal is prevented. A coil component includes a drum core, a first metal terminal, and a first wire. The drum core includes a columnar winding core, a first flange provided at a first end in a direction along a center axis of the winding core, and a second flange provided at a second end opposite to the first end of the winding core. The first metal terminal 40 is provided on the first flange 21. The first metal terminal has a first joining part facing an upper surface of the first flange. The first joining part has a first inclined portion with an upper surface inclined downward toward the winding core in a direction along a left-right axis. A first end of the first wire is joined to an upper surface of the first joining part.In addition, the first wire overlaps the first inclined section when viewed from above.

Description

BACKGROUND OF THE INVENTION 1. FIELD OF THE INVENTION

[0001] The present invention relates to a coil component. 2. STATE OF THE ART

[0002] A coil component described in Japanese Patent Application No. 2019-050317 includes a winding core and two flanges. The winding core has a quadrangular prism shape. The two flanges are connected to both ends of the winding core. Each flange protrudes outward from the winding core in a direction orthogonal to the center axis of the winding core. The winding core and the flanges form a core of the coil component. Furthermore, the coil component described in Japanese Patent Application No. 2019-050317 includes an electrode and a wire. The electrode is attached to the flange. The wire is wound around the winding core. One end of the wire is attached to the electrode by thermocompression bonding. PRESENTATION OF THE INVENTION

[0003] In the coil component described in Japanese Patent Application No. 2019-050317, the wire thermocompression-bonded to the electrode is compressed on the electrode. Therefore, the wire can be deformed into a flat shape on the electrode before thermocompression bonding without maintaining its outer diameter. If such a flat portion of the wire extends to an edge of the electrode, the wire can be cut off at the edge.

[0004] To solve the above-mentioned problems, the present invention is a coil component comprising: a drum core having a columnar winding core, a first flange connected to a first end in a direction along a central axis of the winding core, and a second flange connected to a second end opposite to the first end of the winding core; a first metal terminal attached to the first flange; and a first wire wound around the winding core and having a first end and a second end opposite to the first end, wherein the first flange protrudes outward with respect to the winding core in a direction along an up-down axis orthogonal to the central axis when an axis orthogonal to both the up-down axis and the central axis is defined as a left-right axis.one of the directions along the up-down axis is defined as an upward direction and a direction opposite to the upward direction is defined as a downward direction, wherein the first metal terminal has a first joining part facing an upper surface of the first flange, wherein the first joining part has a first inclined portion with an upper surface inclined in the downward direction toward the winding core in a direction along the left-right axis, and wherein a first end of the first wire is attached to an upper surface of the first joining part and the first wire overlaps the first inclined portion when viewed in the downward direction.

[0005] According to the above configuration, disconnection of a wire near the metal terminal can be prevented. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a coil component; Fig. 2 is a plan view of the coil component; Fig. 3 is an enlarged view when the coil member is viewed in a first negative direction; Fig. 4 is a plan view of the coil component according to a modification; and Fig. 5 is a perspective view of the coil component according to the modification. DETAILED DESCRIPTION OF THE INVENTION

[0006] An embodiment of a coil component is described below with reference to the drawings. Please note that in the drawings, components may be enlarged for clarity. The dimensional relationships of the components may differ from the actual ones or those shown in another drawing. <gesamtkonfiguration>

[0007] As in Fig. 1, a coil component 10 has a drum core 10C and a plate core 10F.

[0008] The drum core 10C has a winding core 11, a first flange 21 and a second flange 31.

[0009] The winding core 11 has a quadrangular prism shape. Materials for the winding core 11 include aluminum oxide, Ni-Zn-based ferrite, synthetic resin, or a mixture thereof.

[0010] The first flange 21 is provided at a first end of the winding core 11 in a direction along a central axis X. In other words, the first flange 21 is connected to the first end of the winding core 11 in the direction along the central axis X. The second flange 31 is provided at a second end of the winding core 11 in the direction of the central axis X. In other words, the second flange 31 is connected to the second end of the winding core 11 in the direction of the central axis X. The material of the first flange 21 and the second flange 31 is the same as that of the winding core 11. In addition, the first flange 21 and the second flange 31 are integrally formed with the winding core 11.

[0011] Here, a specific axis orthogonal to the central axis X is defined as the up-down axis Y. In the present embodiment, the up-down axis Y, when viewed in the direction of the central axis X, is a direction orthogonal to a mounting surface when the coil component 10 is mounted on a substrate. Furthermore, an axis orthogonal to both the central axis X and the up-down axis Y is defined as the left-right axis Z. Then, one of the directions along the central axis X is defined as the first positive direction X1, and a direction opposite to the first positive direction X1 is defined as the first negative direction X2. In the present embodiment, the first positive direction X1 coincides with a direction from the winding core 11 to the first flange 21. The first negative direction X2 coincides with a direction from the winding core 11 to the second flange 31.Furthermore, one of the directions along the up-down axis Y is defined as the upward direction Y1, and a direction opposite to the upward direction Y1 is defined as the downward direction Y2. Furthermore, one of the directions along the left-right axis Z is defined as a rightward direction Z1, and a direction opposite to the rightward direction Z1 is defined as a leftward direction Z2. Note that the upward direction Y1 and the downward direction Y2 are used here for convenience and do not indicate a gravitational direction. In addition, the rightward direction Z1 and the leftward direction Z2 are also used for convenience and are not intended to limit the left and right directions from any particular point of view.

[0012] In the present disclosure, an "upper surface" refers to a surface facing the upward direction Y1 in a direction along the up-down axis Y, and a "lower surface" refers to a surface facing the downward direction Y2. It is noted that the "upper surface" is not necessarily strictly orthogonal to the upward direction Y1, and, for example, when the coil component 10 is viewed from the upward direction Y1 to the downward direction Y2 with respect to the coil component 10, a visible surface is referred to as an "upper surface of the coil component 10." The same applies to the lower surface.

[0013] The first flange 21 protrudes outward with respect to the winding core 11 in directions along the up-down axis Y and the left-right axis Z when viewed from the direction along the central axis X. The first flange 21 has a symmetrical shape in a direction along the left-right axis Z. The first flange 21 has an outer end surface 21A. The outer end surface 21A is a surface facing the first positive direction X1 of the outer surfaces of the first flange 21.

[0014] The first flange 21 includes a main body 22 and a protruding portion 23. The main body 22 has a substantially rectangular cuboid shape with a small thickness in the direction along the central axis X. When viewed in the first negative direction X2, both edges of the main body 22 in the upward direction Y1 and downward direction Y2 are parallel to the left-right axis Z. Furthermore, when viewed in the first negative direction X2, both edges of the main body 22 in the left direction Z2 and in the right direction Z1 are parallel to the up-down axis Y.

[0015] The protruding portion 23 protrudes from an upper surface 22A of the main body 22 in the upward direction Y1. The protruding portion 23 has a quadrangular truncated pyramid shape in which a dimension in the direction along the left-right axis Z decreases in the upward direction Y1. The protruding portion 23 is located substantially at the center of the main body 22 in the direction along the left-right axis Z. A dimension of the protruding portion 23 in the direction along the central axis X is the same as a dimension of the main body 22 in the direction along the central axis X.

[0016] It should be noted that the main body 22 and the protruding portion 23 are integrally formed. This means that there is no clear boundary between the main body 22 and the protruding portion 23 within the first flange 21.

[0017] The second flange 31 has a shape symmetrical to the first flange 21 with respect to the direction along the left-right axis Z. This means that the second flange 31 protrudes outward with respect to the winding core 11 in the up-down axis Y direction and in the left-right axis Z direction when viewed from the direction of the central axis X. Then, the second flange 31 has an outer end surface 31A facing the first negative direction X2. The second flange 31 includes a main body 32 and a protruding portion 33. The configurations of the main body 32 and the protruding portion 33 of the second flange 31 are similar to those of the main body 22 and the protruding portion 23 of the first flange 21. This means that the protruding portion 33 protrudes from an upper surface 32A of the main body 32 in the upward direction Y1.

[0018] The plate core 10F is shaped like a rectangular plate. A long side of the plate core 10F is parallel to the central axis X. A short side of the plate core 10F is parallel to the left-right axis Z. The plate core 10F is located on the downward direction Y2 side with respect to the drum core 10C. The plate core 10F is connected to both a lower surface of the first flange 21 and a lower surface of the second flange 31. This means that the plate core 10F is bridged between the first flange 21 and the second flange 31. A material of the plate core 10F is the same as a material of the drum core 10C.

[0019] The coil component 10 has a first metal terminal 40, a second metal terminal 50, a third metal terminal 60 and a fourth metal terminal 70.

[0020] The first metal terminal 40 is provided on the first flange 21. This means that the first metal terminal 40 is attached to the first flange 21. The first metal terminal 40 is located on the Z1 side in the right direction with respect to the central axis X in the first flange 21. The second metal terminal 50 is provided on the first flange 21. This means that the second metal terminal 50 is attached to the first flange 21. The second metal terminal 50 is located on the left side Z2 with respect to the central axis X in the first flange 21. This means that the second metal terminal 50 is attached to a portion of the first flange 21 opposite the first metal terminal 40 across the central axis X in the direction along the left-right axis Z. The third metal terminal 60 is provided on the second flange 31. This means that the third metal terminal 60 is attached to the second flange 31.The third metal terminal 60 is located on the rightward side Z1 with respect to the central axis X in the second flange 31. This means that the third metal terminal 60 faces the first metal terminal 40 in the direction of the central axis X. The fourth metal terminal 70 is provided on the second flange 31. This means that the fourth metal terminal 70 is attached to the second flange 31. The fourth metal terminal 70 is located on the leftward side Z2 with respect to the central axis X in the second flange 31. This means that the fourth metal terminal 70 faces the second metal terminal 50 in the direction along the central axis X. Details of the first metal terminal 40 to the fourth metal terminal 70 will be described later.

[0021] As in Fig. As shown in Figure 2, the coil component 10 includes a first wire 81 and a second wire 91. Although not shown, the first wire 81 includes a copper wire and an insulating film. The insulating film covers an outer surface of the copper wire. The first wire 81 has a substantially circular shape in a portion orthogonal to a direction in which the first wire 81 extends. The first wire 81 has a first end 81A and a second end 81B opposite the first end 81A.

[0022] As in the Fig. 1 and Fig. 2, the first end 81A of the first wire 81 is joined to the first metal terminal 40 by thermocompression bonding. The first wire 81 extends from the first metal terminal 40 toward a ridge line of the winding core 11 on the left side in the Z2 direction and the upward direction Y1 side. Then, the first wire 81 is wound around the winding core 11, viewed in the first negative direction X2, so that it moves clockwise as it goes in the first negative direction X2. The second end 81B of the first wire 81 extends from a ridge line of the winding core 11 on the right side of the Z1 direction and the downward direction Y2 side toward the third metal terminal 60. The second end 81B of the first wire 81 is joined to the third metal terminal 60 by thermocompression bonding.

[0023] It should be noted that thermocompression bonding is a process in which the wire is placed between the metal terminal and a heated jig, and the wire is fixed to the metal terminal while the wire is melted. As a result of this fixing process, the insulating film near a connection portion with the metal terminal in the wire is peeled off, and the copper wire is exposed.

[0024] The second wire 91 has the same configuration as the first wire 81. This means that the second wire 91 includes the copper wire and the insulating film. The second wire 91 has a first end 91A and a second end 91B opposite the first end 91A.

[0025] The first end 91A of the second wire 91 is joined to the second metal terminal 50 by thermocompression bonding. The second wire 91 extends from the second metal terminal 50 toward a ridge line of the winding core 11 on the left direction Z2 side and the downward direction Y2 side. Then, the second wire 91 is wound around the winding core 11, viewed in the first negative direction X2, so that it moves clockwise as it goes in the first negative direction X2. The second end 91B of the second wire 91 extends from a ridge line of the winding core 11 on the right direction Z1 side and the upward direction Y1 side of the fourth metal terminal 70. The second end 91B of the second wire 91 is joined to the fourth metal terminal 70 by thermocompression bonding. <Erster Metallanschluss>

[0026] As in Fig. As shown in Figure 1, the first metal terminal 40 includes a first connecting portion 41, a first coupling portion 42, a first mounting portion 43, a first extension portion 44, and a first joining portion 45. Note that the first connecting portion 41, the first coupling portion 42, the first mounting portion 43, the first extension portion 44, and the first joining portion 45 are integrally formed. This means that there is no clear boundary between these elements within the first metal terminal 40.

[0027] As in Fig. As shown in Figure 1, the first connecting portion 41 has a substantially plate-like shape. The first connecting portion 41 is attached to the outer end surface 21A of the first flange 21 via an adhesive. The first connecting portion 41 is a portion of the first metal terminal 40 that faces the outer end surface 21A of the first flange 21 in the direction along the central axis X.

[0028] The first coupling portion 42 is connected to one end of the first connecting portion 41 in the upward direction Y1. The first coupling portion 42 extends from the first connecting portion 41 in the upward direction Y1. This means that, as shown in Fig. 3, the first coupling portion 42 protrudes from the first flange 21 in the upward direction Y1 when viewed in the first negative direction X2. Specifically, the first coupling portion 42 protrudes in the upward direction Y1 with respect to the protruding part 23 of the first flange 21. As shown in Fig. As shown in Figure 1, the first coupling portion 42 is bent approximately 90 degrees along the path in the first negative direction X2. This means that one end of the first coupling portion 42, on a side opposite the first connecting portion 41, points in the first negative direction X2.

[0029] The first mounting part 43 is connected to one end of the first coupling portion 42 opposite to the first connecting portion 41. The first mounting part 43 has a flat plate shape. A main surface of the first mounting part 43 is orthogonal to the up-down axis Y. Further, the first mounting part 43 is a portion of the first metal terminal 40 located on an uppermost side in the upward direction Y1. The first mounting part 43 is separated from the protruding portion 23 of the first flange 21 in the upward direction Y1. This means that a gap exists between the first mounting part 43 and the first flange 21. Note that the first mounting part 43 is a portion facing the substrate when the coil component 10 is mounted on the substrate.

[0030] As in Fig. 3, a first end of the first extending portion 44 is connected to one end of the first mounting part 43 in the rightward direction Z1. The first extending portion 44 extends substantially obliquely from the first mounting part 43 in the rightward direction Z1 and the downward direction Y2. A second end of the first extending portion 44 faces the rightward direction Z1. A thickness dimension of the first extending portion 44 is reduced in the middle of the first extending portion 44 extending from the first end to the second end. That is, the thickness dimension at the second end of the first extending portion 44 is smaller than the thickness dimension at the first end of the first extending portion 44. Note that the thickness dimension of the first extending portion 44 is a dimension in a direction orthogonal to an extending direction of the first extending portion 44.

[0031] As in Fig. As shown in Figure 1, the first joining part 45 is connected to the second end of the first extension portion 44. The first joining part 45 has a substantially plate-like shape. The first joining part 45 has a substantially rectangular shape that is elongated in the direction along the central axis X when viewed in the downward direction Y2.

[0032] As in Fig. 3, the first joining part 45 faces the upper surface 22A of the main body 22 of the first flange 21 along the up-down axis Y. This means that a lower surface of the first joining part 45 faces an upper surface of the first flange 21. The lower surface of the first joining part 45 is in contact with the upper surface of the first flange 21. On the other hand, the lower surface of the first joining part 45 is not fixed to the first flange 21. This means that no adhesive or the like is disposed between the first joining part 45 and the first flange 21.

[0033] As in Fig. 2, the first joining part 45 includes a first flat surface part 45A and a first inclined portion 45B. The first flat surface part 45A occupies approximately half of the first joining part 45 on the rightward side Z1. Viewed in the downward direction Y2, the first flat surface part 45A has a substantially rectangular shape elongated in the direction along the central axis X. An upper surface of the first flat surface part 45A is orthogonal to the up-down axis Y. In addition, a lower surface of the first flat surface part 45A is also orthogonal to the up-down axis Y. Therefore, the first flat surface part 45A has a substantially constant thickness.

[0034] The first inclined portion 45B is adjacent to the first flat surface part 45A on the winding core 11 side in the direction along the left-right axis Z. The first inclined portion 45B reaches a first inclined end 45C, which is an end of the first joining part 45 on the winding core 11 side in the direction along the left-right axis Z. An upper surface of the first inclined portion 45B is inclined in the downward direction Y2 toward the winding core 11 in the direction along the left-right axis Z. That is, an upper surface of the first joining part 45 is located on a lowermost side in the downward direction Y2 at the first inclined end 45C.

[0035] The upper surface of the first inclined portion 45B is flat. This means that the first inclined portion 45B is inclined at a constant inclination in the direction along the left-right axis Z. Further, on the upper surface of the first inclined portion 45B, a dimension in the direction along the up-down axis Y from a position located on the uppermost side in the upward direction Y1 to a position located on the lowermost side in the downward direction Y2 is larger than an outer diameter of the first wire 81. A lower surface of the first inclined portion 45B is orthogonal to the up-down axis Y. The lower surface of the first inclined portion 45B is flush with the lower surface of the first flat surface part 45A. <Zweiter Metallanschluss>

[0036] As in Fig. 1, the second metal terminal 50 includes a second connecting portion 51, a second coupling portion 52, a second mounting portion 53, a second extension portion 54, and a second joining portion 55. Note that the second connecting portion 51, the second coupling portion 52, and the second mounting portion 53 each have shapes obtained by inverting the first connecting portion 41, the first coupling portion 42, and the first mounting portion 43 with respect to the direction along the central axis X.

[0037] The second connecting portion 51 has a substantially plate-like shape. The second connecting portion 51 is attached to the outer end surface 21A of the first flange 21 via the adhesive. The second connecting portion 51 is a portion of the second metal terminal 50 that faces the outer end surface 21A of the first flange 21 in the direction along the central axis X.

[0038] The second coupling portion 52 is connected to one end of the second connecting portion 51 in the upward direction Y1. The second coupling portion 52 extends from the second connecting portion 51 in the upward direction Y1. This means that, as shown in Fig. 3, the second coupling portion 52 protrudes from the first flange 21 in the upward direction Y1 when viewed in the first negative direction X2. Specifically, the second coupling portion 52 protrudes in the upward direction Y1 with respect to the protruding part 23 of the first flange 21. As shown in Fig. As shown in Figure 1, the second coupling portion 52 is bent approximately 90 degrees along the path in the first negative direction X2. This means that one end of the second coupling portion 52, on a side opposite the second joining part 51, points in the first negative direction X2.

[0039] The second mounting part 53 is connected to one end of the second coupling portion 52 opposite the second connecting portion 51. The second mounting part 53 has a flat plate shape. A main surface of the second mounting part 53 is orthogonal to the up-down axis Y. Further, the second mounting part 53 is a portion of the second metal terminal 50 located on the uppermost side in the upward direction Y1. The second mounting part 53 is separated from the protruding portion 23 of the first flange 21 in the upward direction Y1. This means that a gap exists between the second mounting part 53 and the first flange 21.

[0040] A first end of the second extension portion 54 is connected to one end of the second mounting part 53 in the left direction Z2. The second extension portion 54 extends substantially obliquely from the second mounting part 53 in the left direction Z2 and the downward direction Y2. A second end of the second extension portion 54 points in the left direction Z2. As shown in Fig. 3, a thickness dimension of the second extension portion 54 is constant from the first end to the second end of the second extension portion 54.

[0041] The second joining part 55 faces the upper surface 22A of the main body 22 of the first flange 21 along the up-down axis Y. This means that a lower surface of the second joining part 55 faces the upper surface of the first flange 21. The lower surface of the second joining part 55 is in contact with the upper surface of the first flange 21. On the other hand, the lower surface of the second joining part 55 is not fixed to the first flange 21. This means that no adhesive or the like is disposed between the second joining part 55 and the first flange 21.

[0042] As in Fig. 2, the second joining part 55 includes a second flat surface part 55A and a second inclined portion 55B. The second flat surface part 55A occupies approximately half of the second joining part 55 on the first positive direction X1 side. When viewed in the downward direction Y2, the second flat surface part 55A has a substantially rectangular shape elongated in the direction along the left-right axis Z. An upper surface of the second flat surface part 55A is orthogonal to the up-down axis Y. In addition, a lower surface of the second flat surface part 55A is also orthogonal to the up-down axis Y. Therefore, the second surface part 55A has a substantially constant thickness.

[0043] The second inclined portion 55B is adjacent to the second flat surface part 55A on the second flange 31 side in the direction along the central axis X. The second inclined portion 55B reaches a second inclined end 55C that is one end of the second joining part 55 on the second flange 31 side in the direction along the central axis X. An upper surface of the second inclined portion 55B is inclined in the downward direction Y2 toward the second flange 31 in the direction along the central axis X. That is, an upper surface of the second joining part 55 is located on the lowest side in the downward direction Y2 at the second inclined end 55C.

[0044] The upper surface of the second inclined portion 55B is planar. This means that the second inclined portion 55B is inclined at a constant inclination in the direction of the central axis X. Furthermore, on the upper surface of the second inclined portion 55B, a dimension in the direction of the up-down axis Y from a position located on the uppermost side in the upward direction Y1 to a position located on the lowermost side in the downward direction Y2 is larger than an outer diameter of the second wire 91. In other words, on the upper surface of the second inclined portion 55B, a dimension in the direction along the up-down axis Y from an end in the first positive direction X1 to an end in the first negative direction X2 is larger than the outer diameter of the second wire 91. A lower surface of the second inclined portion 55B is orthogonal to the up-down axis Y.The lower surface of the second inclined portion 55B is flush with the lower surface of the second flat surface part 55A. <Dritter Metallanschluss>

[0045] As in Fig. As shown in Figure 2, the third metal terminal 60 has the same shape as the second metal terminal 50. The third metal terminal 60 has a shape obtained by rotating the second metal terminal 50 180 degrees around an axis parallel to the up-down axis Y and passing through a center of the winding core 11. The third metal terminal 60 includes a third connecting portion 61, a third coupling portion 62, a third mounting part 63, a third extension portion 64, and a third joining part 65.

[0046] The third metal terminal 60 is attached to the outer end surface 31A of the second flange 31 at the third connecting portion 61. As shown in Fig. 1, the third joining part 65 faces the upper surface 32A of the main body 32 of the second flange 31 along the up-down axis Y. This means that a lower surface of the third joining part 65 faces the upper surface of the second flange 31. The lower surface of the third joining part 65 is in contact with the upper surface of the second flange 31. On the other hand, the lower surface of the third joining part 65 is not fixed to the second flange 31. This means that no adhesive is disposed between the third joining part 65 and the second flange 31.

[0047] As in Fig. 2, the third joining part 65 includes a third flat surface part 65A and a third inclined portion 65B. The third flat surface part 65A occupies approximately half of the third joining part 65 on the first negative direction X2. When viewed in the downward direction Y2, the third flat surface part 65A has a substantially rectangular shape elongated in the direction along the left-right axis Z. An upper surface of the third flat surface part 65A is orthogonal to the up-down axis Y. In addition, a lower surface of the third flat surface part 65A is also orthogonal to the up-down axis Y. Therefore, the third flat surface part 65A has a substantially constant thickness.

[0048] The third inclined portion 65B is adjacent to the third flat surface part 65A on the first flange 21 side in the direction along the central axis X. The third inclined portion 65B reaches a third inclined end 65C, which is one end of the third joining part 65 on the first flange 21 side in the direction along the central axis X. An upper surface of the third inclined portion 65B is inclined in the downward direction Y2 toward the first flange 21 in the direction along the central axis X. That is, an upper surface of the third joining part 65 is located on the lowest side in the downward direction Y2 at the third inclined end 65C.

[0049] The upper surface of the third inclined portion 65B is planar. This means that the third inclined portion 65B is inclined at a constant inclination in the direction of the central axis X. Furthermore, on the upper surface of the third inclined portion 65B, a dimension in the direction of the up-down axis Y from a position located on the uppermost side in the upward direction Y1 to a position located on the lowermost side in the downward direction Y2 is larger than the outer diameter of the first wire 81. In other words, on the upper surface of the third inclined portion 65B, a dimension in the direction along the up-down axis Y from an end in the first negative direction X2 to an end in the first positive direction X1 is larger than the outer diameter of the first wire 81. A lower surface of the third inclined portion 65B is orthogonal to the up-down axis Y.The lower surface of the third inclined portion 65B is flush with the lower surface of the third flat surface part 65A. <Vierter Metallanschluss>

[0050] As in Fig. As shown in Figure 2, the fourth metal terminal 70 has the same shape as the first metal terminal 40. The fourth metal terminal 70 has a shape obtained by rotating the first metal terminal 40 180 degrees around an axis parallel to the up-down axis Y and passing through the center of the winding core 11. The fourth metal terminal 70 includes a fourth connecting portion 71, a fourth coupling portion 72, a fourth mounting part 73, a fourth extension portion 74, and a fourth joining part 75.

[0051] The fourth metal terminal 70 is attached to the outer end surface 31A of the second flange 31 at the fourth connecting portion 71. As shown in Fig. 1, the fourth joining part 75 faces the upper surface 32A of the main body 32 of the second flange 31 along the up-down axis Y. This means that a lower surface of the fourth joining part 75 faces the upper surface of the second flange 31. The lower surface of the fourth joining part 75 is in contact with the upper surface of the second flange 31. On the other hand, the lower surface of the fourth joining part 75 is not fixed to the second flange 31. This means that no adhesive or the like is disposed between the fourth joining part 75 and the second flange 31.

[0052] As in Fig. 2, the fourth joining part 75 includes a fourth flat surface part 75A and a fourth inclined portion 75B. The fourth flat surface part 75A occupies approximately half of the fourth joining part 75 on the leftward side Z2. Viewed in the downward direction Y2, the fourth flat surface part 75A has a substantially rectangular shape elongated in the direction of the central axis X. An upper surface of the fourth flat surface part 75A is orthogonal to the up-down axis Y. In addition, a lower surface of the fourth flat surface part 75A is also orthogonal to the up-down axis Y. Therefore, the fourth flat surface part 75A has a substantially constant thickness.

[0053] The fourth inclined portion 75B is adjacent to the fourth flat surface part 75A on the winding core 11 side in the direction along the left-right axis Z. The fourth inclined portion 75B reaches a fourth inclined end 75C, which is an end of the fourth joining part 75 on the winding core 11 side in the direction along the left-right axis Z. An upper surface of the fourth inclined portion 75B is inclined in the downward direction Y2 toward the winding core 11 in the direction along the left-right axis Z. That is, the upper surface of the fourth joining part 75 is located at the fourth inclined end 75C on the lowest side in the downward direction Y2.

[0054] The upper surface of the fourth inclined portion 75B is planar. This means that the fourth inclined portion 75B is inclined at a constant inclination in the left-right direction Z. Further, on the upper surface of the fourth inclined portion 75B, a dimension in the direction along the up-down axis Y from a position located on the uppermost side in the upward direction Y1 to a position located on the lowermost side in the downward direction Y2 is larger than the outer diameter of the second wire 91. In other words, on the upper surface of the fourth inclined portion 75B, a dimension in the direction along the up-down axis Y from an end in the left direction Z2 to an end in the right direction Z1 is larger than the outer diameter of the second wire 91. A lower surface of the fourth inclined portion 75B is orthogonal to the up-down axis Y.The lower surface of the fourth inclined portion 75B is flush with the lower surface of the fourth flat surface part 75A. <Verhältnis zwischen den Dickenabmessungen der Metallanschlüsse>

[0055] As in Fig. 3, a thickness dimension T1 from the lower surface to the upper surface of the first flat surface part 45A in the direction along the up-down axis Y is equal to a thickness dimension T2 from the lower surface to the upper surface of the second flat surface part 45A in the direction along the up-down axis Y. In addition, as described above, the lower surface of the first flat surface part 45A contacts the upper surface 22A of the main body 22 of the first flange 21. In addition, the lower surface of the second flat surface part 55A is in contact with the upper surface 22A of the main body 22 of the first flange 21. Therefore, a shortest distance from the upper surface of the first flange 21 to the first flat surface part 45A in the direction along the up-down axis Y is equal to a shortest distance from the upper surface of the first flange 21 to the second flat surface part 55A in the direction along the up-down axis Y.

[0056] In the present embodiment, the shortest distance from the upper surface of the first flange 21 to the first flat surface part 45A is zero.

[0057] It is noted that the thickness dimensions of the flat surface parts are equal in the direction along the up-down axis Y. This means that the thickness dimension T1 of the first flat surface part 45A, the thickness dimension T2 of the second flat surface part 55A, a thickness dimension of the third flat surface part 65A, and a thickness dimension of the fourth flat surface part 75A are equal to each other in the direction along the up-down axis Y.

[0058] In addition, the shortest distance from the upper surface of the second flange 31 to the third flat surface part 65A in the direction along the up-down axis Y is equal to the shortest distance from the upper surface of the second flange 31 to the fourth flat surface part 75A in the direction along the up-down axis Y. In the present embodiment, the shortest distance from the upper surface of the second flange 31 to the third flat surface part 65A is zero.

[0059] As in Fig. As shown in Figure 2, an area of the upper surface of the first flat surface part 45A, an area of the upper surface of the second flat surface part 55A, an area of the upper surface of the third flat surface part 65A, and an area of the upper surface of the fourth flat surface part 75A are equal to each other. This means that the areas of the upper surfaces of the flat surface parts of the metal terminals are equal to each other. <Positionsbeziehung zwischen jedem Metallanschluss und jedem Draht>

[0060] The first end 81A of the first wire 81 is joined to the upper surface of the first flat surface part 45A and the upper surface of the first inclined portion 45B of the first connecting portion 45. Furthermore, the first wire 81 overlaps the first inclined portion 45B when viewed in the downward direction Y2. The first wire 81 also overlaps the first inclined end 45C, which is one end of the first joining part 45 on the winding core 11 side in the direction along the left-right axis Z.

[0061] The second end 81B of the first wire 81 is joined to the upper surface of the third flat surface part 65A of the third joining part 65. Furthermore, when viewed in the downward direction Y2, the first wire 81 overlaps the third inclined portion 65B. When viewed in the downward direction Y2, the first wire 81 also overlaps the third inclined end 65C, which is one end of the third joining part 65 on the first flange 21 side in the direction along the central axis X.

[0062] The first end 81A and the second end 81B of the first wire 81 are deformed into a flat shape by thermocompression bonding. The first wire 81 is less affected by thermocompression bonding at the first inclined end 45C and the third inclined end 65C. Therefore, the outer diameter of the first wire 81 is maintained at the first inclined end 45C and the third inclined end 65C compared to that at the first flat surface part 45A and the third flat surface part 65A.

[0063] The first end 91A of the second wire 91 is joined to the upper surface of the second flat surface part 55A and the upper surface of the second inclined portion 55B of the second joining part 55. Furthermore, when viewed in the downward direction Y2, the second wire 91 overlaps the second inclined portion 55B. When viewed in the downward direction Y2, the second wire 91 also overlaps the second inclined end 55C, which is an end of the second joining part 55 on the second flange 31 side in the direction of the central axis X.

[0064] The second end 91B of the second wire 91 is joined to the upper surface of the fourth flat surface portion 75A of the fourth joining part 75. Furthermore, when viewed in the downward direction Y2, the second wire 91 overlaps the fourth inclined portion 75B. When viewed in the downward direction Y2, the second wire 91 also overlaps the fourth inclined end 75C, which is one end of the fourth joining part 75 on the winding core 11 side in the direction along the left-right axis Z.

[0065] The first end 91A and the second end 91B of the second wire 91 are deformed into a flat shape by thermocompression bonding. On the other hand, the second wire 91 is less affected by thermocompression bonding at the second inclined end 55C and the fourth inclined end 75C. Therefore, the outer diameter of the second wire 91 is maintained at the second inclined end 55C and the fourth inclined end 75C compared to that at the second flat surface part 55A and the fourth flat surface part 75A. (Effects of the present embodiment) (1) In the above embodiment, the upper surface of the first inclined portion 45B of the first metal terminal 40 is inclined in the downward direction Y2 toward the winding core 11. Therefore, even if the first wire 81 is deformed by vertical crimping on the first joining part 45 by thermocompression bonding or the like, the shape of the first wire 81 in a portion of the first wire 81 on the winding core 11 side of the first inclined portion 45B is easily maintained in a state before thermocompression bonding. Therefore, it is possible to suppress separation of the first wire 81 at a portion at an edge of the first joining part 45 in the first wire 81. (2) In the above embodiment, the first joining part 45 has the first flat surface part 45A. Furthermore, the first end 81A of the first wire 81 is joined to the first flat surface part 45A. Since the upper surface of the first flat surface part 45A is a flat surface orthogonal to the up-down axis Y, the first wire 81 is press-connected with substantially equal force when a press-connecting tool is pressed along the up-down axis Y.

[0066] Therefore, it is easy to manage a compression bonding force against the first flat surface part 45A. In this respect, the same effect is also achieved in the flat surface part of each metal terminal.

[0067] (3) In the above embodiment, when viewed in the downward direction Y2, the first wire 81 overlaps the first inclined end 45C. According to this configuration, the first wire 81 passes over the first inclined end 45C located on the lowest side in the downward direction Y2 in the first inclined portion 45B. Therefore, even if the first wire 81 is deformed along the up-down axis Y on the first joining part 45 to be compressed, the shape of the first wire 81 is easily maintained on the first inclined end 45C. In this respect, the same effect is also achieved in the inclined end of each metal terminal.

[0068] (4) In the above embodiment, when viewed in the downward direction Y2, the second wire 91 overlaps the second inclined portion 55B. According to this configuration, the second inclined portion 55B is located along a direction in which the second wire 91 extends from a portion where the second wire 91 is wound around the winding core 11 toward the second metal terminal 50. Therefore, the effect described in (1) is also achieved in the vicinity of the first end 81A of the second wire 91.

[0069] (5) In the above embodiment, the shortest distance from the upper surface of the first flange 21 to the first flat surface part 45A is equal to the shortest distance from the upper surface of the first flange 21 to the second flat surface part 55A. According to this configuration, in this arrangement, since the positions of the connecting portions for the wires in the direction along the up-down axis Y are the same, a stress is less likely to be prestressed at the time of thermocompression bonding when the first wire 81 is thermocompression bonded to the first flat surface part 45A and the second wire 91 is thermocompression bonded to the second flat surface part 55A.

[0070] (6) In the above embodiment, the thickness dimension T1 from the lower surface to the upper surface of the first flat surface part 45A is equal to the thickness dimension T2 from the lower surface to the upper surface of the second flat surface part 55A. According to this configuration, even if the lower surface of each flat surface part comes into contact with the first flange 21 at the time of thermocompression bonding with each wire, the load at the time of thermocompression bonding is not distorted because the thickness dimensions of the flat surface parts are the same.

[0071] (7) In the above embodiment, when viewed in the downward direction Y2, the first wire 81 overlaps the third inclined portion 65B. When viewed in the downward direction Y2, the second wire 91 overlaps the fourth inclined portion 75B. Therefore, the third metal terminal 60 and the fourth metal terminal 70 attached to the second flange 31 also have the same effect as (1) in joining the wires.

[0072] (8) In the above embodiment, the surface areas of the upper surfaces of the flat surface portions are equal to each other. Therefore, thermocompression bonding can be performed for each metal terminal without changing the load setting when one end of each wire is thermocompression bonded to each flat surface portion. This makes it possible to suppress process complication at the time of manufacturing the coil component 10.

[0073] (9) In the above embodiment, the dimension in the direction along the up-down axis Y from the position located on the uppermost side in the upward direction Y1 to the position located on the lowermost side in the downward direction Y2 of the first inclined portion 45B is larger than the outer diameter of the first wire 81. According to this configuration, the outer diameter of the first wire 81 is maintained on the Y2 side in the downward direction of the first inclined portion 45B. Therefore, it is possible to more reliably suppress the loosening of the first wire 81 at a boundary between the first joining part 45 and an outer side of the first joining part 45. In this respect, the same effect is also achieved in each metal terminal. <modifizierungen>

[0074] The above embodiment and the following modifications can be implemented in combination with each other within a range that is not technically contradictory. • In the above embodiment, the configuration of the coil member 10 is not limited. For example, the plate core 10F may be omitted from the coil member 10. Furthermore, the shapes of the first flange 21 and the second flange 31 are not limited to those in the above embodiment. For example, the protruding portion 23 may be omitted from the first flange 21. • In the above embodiment, the shape of the winding core 11 is not limited to an example in the above embodiment. For example, the shape of the winding core 11 may be an elliptical columnar shape or a polygonal columnar shape other than the quadrangular prism shape.

[0075] In the above embodiment, the shape of each wire is not limited to the example in the above embodiment. When viewed in a section orthogonal to a direction in which each wire extends, the shape of the wire may be an elliptical shape other than a circle or polygonal shape.

[0076] In the above embodiment, the outer diameter of each wire is not specifically limited.

[0077] In the above embodiment, the materials of the drum core 10C and the plate core 10F are not limited to the examples in the above embodiment. For example, the materials of the drum core 10C and the plate core 10F are not limited to Ni-Zn-based ferrite and may be Mn-Zn-based ferrite. Furthermore, the materials of the drum core 10C and the plate core 10F may be ferrite, alumina, a synthetic resin, a mixture thereof, or the like. • In the above embodiment, the shape of the plate core 10F is not limited to the rectangular plate shape. For example, the plate core 10F may have the shape of an elliptical plate or the like. • In the above embodiment, the shape of the first metal terminal 40 is not limited to an example in the above embodiment. The first metal terminal 40 includes the first joining part 45 facing the upper surface of the first flange 21. This applies to any metal terminal in this respect. Specifically, for example, the first metal terminal 40 may not include the first connecting portion and the first coupling portion. In this case, the first metal terminal 40 is fixed to the first flange 21 by the first joining part 45, the first mounting part 43, the first extension portion 44, or any plurality thereof. • In the above embodiment, in the first metal terminal 40, the first mounting part 43 and the first joining part 45 may be located at the same height on the up-down axis Y. Furthermore, in this case, the first mounting part 43, the first extension portion 44, and the first joining part 45 may be flush with each other. • In the above embodiment, the first joining part 45 may be separated from the upper surface of the first flange 21. Furthermore, the first joining part 45 may be fixed to the first flange 21 with the adhesive or the like. In this regard, the same applies to the second joining part 55 through the fourth joining part 75. • In the above embodiment, a clear ridge line may not be formed between the first flat surface part 45A and the first inclined portion 45B. This means that the upper surface of the first joining part 45 may have a curved portion. Furthermore, the upper surface of the first inclined portion 45B is not limited to a flat surface and may be a curved surface. This also applies to the second joining part 55 to the fourth joining part 75. • In the above embodiment, the first joining part 45 may not have the first flat surface part 45A. For example, in a Fig. 5, the entire first joining part 45 is the first inclined portion 45B. In this case, the first end 81A of the first wire 81 is attached to the upper surface of the first inclined portion 45B. Furthermore, in the example shown in Fig. In the example shown in Figure 5, an entire second joining part 55 is the second inclined section 55B. An entire third joining part 65 is the third inclined section 65B. An entire fourth joining part 75 is the fourth inclined section 75B. • In the above embodiment, the first end 81A of the first wire 81 may not be joined to both the upper surface of the first flat surface part 45A and the upper surface of the first inclined portion 45B. That is, the first end 81A of the first wire 81 may be joined only to the upper surface of the first flat surface part 45A or the upper surface of the first inclined portion 45B. This also applies to the second joining part 55 to the fourth joining part 75. • In the above embodiment, in the first inclined portion 45B, as long as the upper surface is inclined in the downward direction Y2 toward the winding core 11 in the direction along the left-right axis Z, the inclination and curvature of the first inclined portion 45B may be changed along the way. This also applies to the second inclined portion 55B to the fourth inclined portion 75B, and the inclination and curvature may be changed at the center of the inclined portion. • In the above embodiment, the first wire 81 may not overlap the first inclined end 45C when viewed in the downward direction Y2. That is, the first wire 81 may pass through the end of the first inclined portion 45B on the second flange 31 side in the direction of the central axis X when viewed in the downward direction Y2. Also in this case, in a portion of the first wire 81 that overlaps the first inclined portion 45B, the first end 81A of the first wire 81 can be prevented from being excessively compressed. This also applies to other inclined ends, and each wire may not overlap each inclined end when viewed in the downward direction Y2. • In the above embodiment, the second joining part 55 may not have the second inclined portion 55B as long as the first joining part 45 has the first inclined portion 45B. The third joining part 65 may not have the third inclined portion 65B. Further, the fourth joining part 75 may not have the fourth inclined portion 75B. • In the above embodiment, the shortest distance from the upper surface of the first flange 21 to the first flat surface part 45A in the direction along the up-down axis Y is not equal to the shortest distance from the surface of the first flange 21 to the second flat surface part 55A in the direction along the up-down axis Y. It is noted that the shortest distances from the upper surfaces of the flanges to the flat surface parts may be different from each other. • In the above embodiment, the thickness dimension T1 from the lower surface to the upper surface of the first flat surface part 45A in the direction along the up-down axis Y may be different from the thickness dimension T2 from the lower surface to the upper surface of the second flat surface part 55A in the direction along the up-down axis Y. It is noted that the thickness dimensions of the flat surface parts may be different from each other. • In the above embodiment, the surface areas of the flat surface parts of the metal terminals may be different from each other. • In the above embodiment, on the upper surface of the first inclined portion 45B, the dimension in the direction along the up-down axis Y from the position located on the uppermost side in the upward direction Y1 to the position located on the lowermost side in the downward direction Y2 may be smaller than the outer diameter of the first wire 81. This also applies to other inclined portions. • In the above embodiment, the second inclined portion 55B of the second metal terminal 50 may be adjacent to the second flat surface part 55A in the direction along the left-right axis Z. In a Fig. 4, the second metal terminal 50 has the second joining part 55 facing the upper surface of the first flange 21. The second joining part 55 has the second flat surface part 55A and the second inclined portion 55B. The second inclined portion 55B is adjacent to the second flat surface part 55A on the winding core 11 side in the direction along the left-right axis Z. The upper surface of the second inclined portion 55B is inclined in the downward direction Y2 along the left-right axis Z toward the winding core 11. In the example shown in Fig. 4, the first end 91A of the second wire 91 is joined to the upper surface of the second flat surface part 55A of the second joining part 55, and the second wire 91 overlaps the second inclined portion 55B when viewed toward the downward direction Y2.

[0078] In the Fig. 4, the third metal terminal 60 has the third joining part 65 facing the upper surface of the second flange 31. The third joining part 65 has the third flat surface part 65A and the third inclined portion 65B. The third inclined portion 65B is located on the winding core 11 side with respect to the third flat surface part 65A in the direction along the left-right axis Z. The upper surface of the third inclined portion 65B is inclined downward in the downward direction Y2 in the direction along the left-right axis Z toward the winding core 11. In the example shown in Fig. 4, the second end 81B of the first wire 81 is joined to the upper surface of the third flat surface part 65A of the third joining part 65, and the first wire 81 overlaps the third inclined portion 65B when viewed toward the downward direction Y2.

[0079] In the Fig. 4, the second inclined portion 55B is positioned according to a direction of the second wire 91 extending from the winding core 11 to the second metal terminal 50. This means that also in the example shown in Fig. 4, the effect described in (1) of the above embodiment can be achieved in each metal terminal, including the second metal terminal 50. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] JP 2019-050317 [0002, 0003]< / modifizierungen> < / gesamtkonfiguration>

Claims

[1] A coil component comprising: a drum core having a columnar winding core, a first flange provided at a first end in a direction along a central axis of the winding core, and a second flange provided at a second end opposite to the first end of the winding core; a first metal terminal provided at the first flange; and a first wire wound around the winding core and having a first end and a second end opposite to the first end, wherein the first flange protrudes outward with respect to the winding core in a direction along an up-down axis orthogonal to the central axis when viewed from a direction along the central axis, wherein an axis orthogonal to both the up-down axis and the central axis is defined as a left-right axis,one of the directions along the up-down axis is defined as an upward direction, and a direction opposite to the upward direction is defined as a downward direction, the first metal terminal has a first joining part, and a lower surface of the first joining part faces an upper surface of the first flange, wherein the first joining part has a first inclined portion and an upper surface of the first inclined portion is inclined downwardly toward the winding core in a direction along the left-right axis, and a first end of the first wire is attached to an upper surface of the first joining part, and the first wire overlaps the first inclined portion in the downward direction. [2] The coil component according to claim 1, wherein the first joining part further comprises a first flat surface part, and an upper surface of the first flat surface part is orthogonal to the up-down axis, and the first inclined portion is adjacent to the first flat surface part on one side of the winding core in the direction along the left-right axis. [3] The coil component according to claim 2, wherein the first end of the first wire is attached only to the first flat surface part. [4] The coil component according to claim 2, wherein the first end of the first wire is attached only to the first inclined portion. [5] The coil component according to claim 2, wherein the first end of the first wire is joined to the first inclined portion and the first flat surface part. [6] The coil component according to any one of claims 2 to 5, further comprising: a second metal terminal provided at a portion of the first flange on a side opposite to the first metal terminal across the center axis in the direction along the left-right axis;and a second wire wound around the winding core and having a first end and a second end opposite the first end, wherein the second metal terminal has a second joining part facing the upper surface of the first flange, the second joining part having a second flat surface part and a second inclined portion adjacent to the second flat surface part on one side of the second flange in the direction along the central axis, wherein an upper surface of the second flat surface part is orthogonal to the up-down axis, an upper surface of the second inclined portion is inclined downwardly toward the second flange in the direction of the central axis, and a first end of the second wire is joined to an upper surface of the second joining part, and the second wire overlaps the second inclined portion in the downward direction. [7] The coil component according to any one of claims 2 to 5, further comprising: a second metal terminal provided at a portion of the first flange on a side opposite to the first metal terminal across the center axis in the direction along the left-right axis;and a second wire wound around the winding core and having a first end and a second end opposite the first end, wherein the second metal terminal has a second joining part facing the upper surface of the first flange, the second joining part having a second flat surface part and a second inclined portion adjacent to the second flat surface part on the winding core side in the direction along the left-right axis, wherein an upper surface of the second flat surface part is orthogonal to the up-down axis, an upper surface of the second inclined portion is inclined downwardly toward the winding core in the direction of the left-right axis, and a first end of the second wire is joined to an upper surface of the second joining part, and the second wire overlaps the second inclined portion in the downward direction. [8] The coil component according to claim 6 or 7, wherein an area of the upper surface of the first flat surface part is equal to an area of the upper surface of the second flat surface part. [9] The coil component according to any one of claims 6 to 8, wherein a shortest distance from the upper surface of the first flange to the first flat surface part in the direction along the up-down axis is equal to a shortest distance from the upper surface of the first flange to the second flat surface part in the direction along the up-down axis. [10] The coil component according to claim 9, wherein a thickness dimension from a lower surface to an upper surface of the first flat surface part in the direction along the up-down axis is equal to a thickness dimension from a lower surface to an upper surface of the second flat surface part in the direction along the up-down axis. [11] The coil component according to any one of claims 6 to 10, further comprising: a third metal terminal provided on the second flange and facing the first metal terminal in the direction along the central axis; and a fourth metal terminal provided on the second flange and facing the second metal terminal in the direction along the central axis, wherein the second flange protrudes outward with respect to the winding core in the direction along the up-down axis when viewed from the direction along the central axis, the third metal terminal has a third joining part facing an upper surface of the second flange, the third joining part has a third flat surface part and a third inclined portion adjacent to the third flat surface part on the winding core side in the direction along the left-right axis,an upper surface of the third flat surface part is orthogonal to the up-down axis, an upper surface of the third inclined portion is inclined downwardly along the central axis toward the first flange, the fourth metal terminal has a fourth joining part facing the upper surface of the second flange, the fourth joining part has a fourth flat surface part and a fourth inclined portion adjacent to the fourth flat surface part on one side of the first flange in the direction along the central axis, an upper surface of the fourth flat surface part is orthogonal to the up-down axis, an upper surface of the fourth inclined portion is inclined downwardly toward the winding core in the direction along the left-right axis,a second end of the first wire is attached to an upper surface of the third joining part and the first wire overlaps the third inclined section when viewed in the downward direction, and a second end of the second wire is attached to an upper surface of the fourth joining part and the second wire overlaps the fourth inclined section when viewed in the downward direction. [12] The coil component according to claim 11, wherein an area of the upper surface of the first flat surface part, an area of the upper surface of the second flat surface part, an area of the upper surface of the third flat surface part, and an area of the upper surface of the fourth flat surface part are equal to each other. [13] The coil component according to claim 11 or 12, wherein a thickness dimension from a lower surface to an upper surface of the first flat surface part in the direction along the up-down axis, a thickness dimension from a lower surface to an upper surface of the second flat surface part in the direction along the up-down axis, a thickness dimension from a lower surface to an upper surface of the third flat surface part in the direction along the up-down axis, and a thickness dimension from a lower surface to an upper surface of the fourth flat surface part in the direction along the up-down axis are equal to each other. [14] The coil component according to any one of claims 1 to 13, wherein the first inclined portion reaches a first inclined end which is an end of the first joining part on a side of the winding core in the left-right axis direction, and the first wire overlaps the first inclined end when viewed in the downward direction. [15] The coil component according to any one of claims 1 to 14, wherein a dimension in a direction along the up-down axis from a position located on an uppermost side in the upward direction to a position located on a lowermost side in the downward direction on the upper surface of the first inclined portion is larger than an outer diameter of the first wire.

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