Coil parts

Abstract

To provide a coil component having such a structure that a shape of a terminal member and performance of a coil component 100 can be more surely maintained.SOLUTION: A coil component 100 includes a resin-made base member 20 having a bobbin part 30 and a terminal holding part 50, a coil 70 wound around the bobbin part 30, and a plurality of metal-made terminal members 60 which are held on the terminal holding part 50 by being partially embedded in the terminal holding part 50, and to each of which the coil 70 is electrically connected. In the terminal member 60, a part projecting from the terminal holding part 50 includes a mounting terminal part 65 and a standoff part 67 arranged at a position different from the mounting terminal part 65 in bottom view and exposed to a lower surface side of the coil component 100.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a coil component. [Background technology]

[0002] An example of a coil component is described in Patent Document 1. The coil component of Patent Document 1 is configured to include a bobbin portion (referred to as a bobbin in the document), a coil wound around the bobbin portion, a magnetic core (referred to as a core member in the document) inserted into the bobbin portion, and a plurality of metallic terminal members (referred to as terminal pins in the document) to which the coil is electrically connected. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-188595 A Summary of the Invention [Problem to be solved by the invention]

[0004] According to the investigations of the present inventors, there is still room for improvement in the coil component of Patent Document 1 from the viewpoint of maintaining the shape of the terminal members and the performance of the coil component.

[0005] The present invention has been made in consideration of the above problems, and provides a coil component having a structure that can more reliably maintain the shape of the terminal members and the performance of the coil component. [Means for solving the problem]

[0006] According to the present invention, there is provided a connector comprising: a resin base member having a bobbin portion and a terminal holding portion; A coil wound around the bobbin portion; a plurality of metal terminal members each of which is held by the terminal holding portion as a result of a portion of the terminal members being embedded in the terminal holding portion, and each of which is electrically connected to the coil; A coil component comprising: In the terminal member, a portion protruding from the terminal holding portion is A mounting terminal portion; a stand-off portion that is disposed at a position different from the mounting terminal portion when viewed from the bottom and is exposed on a lower surface side of the coil component; Including fruit, The lower surface of the stand-off portion is formed to be elongated in one horizontal direction, The terminal member is a rising plate portion rising from the mounting surface, the upright plate portion is wider than the mounting terminal portion in the one direction, When viewed from the bottom, at least a part of a portion of the upright plate portion that is disposed at a position different from the mounting terminal portion in the one direction constitutes the stand-off portion, At least a part of the lower end surface of the upright plate portion constitutes the lower surface of the standoff portion. Parts are provided. Effect of the Invention

[0007] According to the present invention, the shape of the terminal member and the performance of the coil component can be more reliably maintained. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a perspective view of a coil component according to an embodiment. [Diagram 2] FIG. 2 is an exploded perspective view of the coil component according to the embodiment. [Diagram 3] FIG. 2 is a front view of the coil component according to the embodiment. [Figure 4] FIG. 2 is a side view of the coil component according to the embodiment. [Diagram 5] FIG. 2 is a plan view of the coil component according to the embodiment. [Figure 6] 6(a) is a cross-sectional view taken along line AA in FIG. 5, and FIG. 6(b) is a partially enlarged view of part A shown in FIG. 6(a). [Figure 7] Figures 7(a), 7(b), 7(c) and 7(d) show a terminal member (first terminal member) in an embodiment, where Figure 7(a) is an oblique view, Figure 7(b) is a front view, Figure 7(c) is a plan view and Figure 7(d) is a bottom view. [Figure 8] 1 is a front view showing a terminal member and its surrounding structure in an embodiment, showing a state in which a contact probe is abutted against a stand-off portion. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In addition, in all drawings, similar components are given the same symbols and descriptions are omitted as appropriate.

[0010] As shown in any one of Figures 1 to 7(d), the coil component 100 of this embodiment comprises a resin base member 20 having a bobbin portion 30 and a terminal holding portion 50, a coil 70 wound around the bobbin portion 30, and a plurality of metal terminal members 60 that are partially embedded in the terminal holding portion 50 and thereby held by the terminal holding portion 50, and to which the coil 70 is electrically connected. As shown in FIG. 7(d), the portion of the terminal member 60 protruding from the terminal holding portion 50 includes a mounting terminal portion 65 and a stand-off portion 67 that is positioned at a different position from the mounting terminal portion 65 when viewed from the bottom and is exposed on the underside of the coil component 100.

[0011] When inspecting the electrical characteristics of the coil component 100, as an example, the tip of a contact probe 310 is abutted against a terminal member 60, as shown in FIG. 8, to apply a current to the coil component 100 via the terminal member 60.

[0012] According to this embodiment, the terminal member 60 includes a mounting terminal portion 65 and a stand-off portion 67 that is arranged at a position different from the mounting terminal portion 65 when viewed from the bottom and is exposed on the underside of the coil component 100. As a result, when inspecting electrical characteristics, a current can be applied to the coil component 100 by bringing the contact probe 310 into contact with the standoff portion 67. This makes it possible to prevent the mounting terminal portion 65 from being deformed due to the contact probe 310 being strongly pressed against the mounting terminal portion 65. Furthermore, a plating layer (not shown) made of, for example, tin is formed on the outer surface of the mounting terminal portion 65, but since a current can be applied to the coil component 100 without contacting the contact probe 310 with the mounting terminal portion 65, the plating layer can be maintained in a good condition. Therefore, the occurrence of corrosion or verdigris due to dew copper or the like in the mounting terminal portion 65 can be suppressed, and the performance of the coil component 100 can be maintained in a good condition. In this manner, according to the present embodiment, the shape of the mounting terminal portion 65, and therefore the shape of the terminal member 60, and the performance of the coil component can be more reliably maintained.

[0013] In the following description, the up-down direction is referred to as the Z direction. The bottom (lower side) is the side on which the mounting terminal portion 65 (FIG. 1, etc.) is arranged, that is, the mounting surface side on which the coil component 100 is mounted. However, the positional relationship of each portion (particularly the up-down positional relationship) during manufacture and use of the coil component 100 is not limited to the positional relationship described in this specification. The axial direction of the insertion hole 36 extends in a direction perpendicular to the Z direction. The axial direction of the insertion hole 36 is referred to as the Y direction, one side in the Y direction is referred to as the front (front) and the other side is referred to as the rear (rear). Moreover, the direction perpendicular to both the Y direction and the Z direction is referred to as the X direction, and one side in the X direction is referred to as the right (rightward), and the other is referred to as the left (leftward). These directions are indicated in each figure. Furthermore, in the Y direction, the side where the center position of the coil 70 in the axial direction is located is referred to as the inner side (inner side), and the side opposite the inner side is referred to as the outer side (outer side). Similarly, in the X direction, the side where the center position of the coil 70 in the left-right direction is located is referred to as the inner side (inner side), and the side opposite the inner side is referred to as the outer side (outer side). Moreover, the direction perpendicular to the Z direction is referred to as the horizontal direction, and the direction along the Z direction is referred to as the vertical direction.

[0014] The coil device 100 includes, for example, a magnetic core 10 inserted into a bobbin portion 30 . In this embodiment, the magnetic core 10 includes, for example, a pair of front and rear core members, that is, a first magnetic core 11a disposed on the front side and a second magnetic core 11b disposed on the rear side. More specifically, each of the first magnetic core 11a and the second magnetic core 11b is, for example, a so-called E core, and has an E-shaped planar shape (see FIG. 2). The first magnetic core 11a includes a base 12 extending in the left-right direction, a pair of outer legs 13 protruding rearward from both ends of the base 12, and an insertion portion 15 protruding rearward from a middle portion of the base 12. The protruding direction of the outer legs 13 and the insertion portion 15 from the base 12 is the same as the axial direction of the coil 70. The base 12 is, for example, elongated in the left-right direction and formed in a prismatic shape with a rectangular cross section perpendicular to the axial direction. In the base 12, two of the four faces arranged around the axis are horizontal upper and lower faces, respectively, and one of the remaining two faces (hereinafter, the inner face) faces the bobbin part 30 side, and the other (hereinafter, the outer face) faces the opposite side of the bobbin part 30. In the case of this embodiment, the inner face of the base 12 constitutes the inner face of the first magnetic core 11a, and the outer face 12d of the base 12 constitutes the outer face of the first magnetic core 11a. Each of the outer legs 13 and the insertion section 15 is long in the front-rear direction, and is formed into a prism shape having a rectangular cross section perpendicular to the axial direction. In the base 12, two of the four faces arranged around the axis are horizontal upper and lower faces, and one of the remaining two faces faces to the right and the other faces to the left. The base 12, the outer legs 13, and the insertion portion 15 are set to have the same vertical dimensions, for example. In the first magnetic core 11a, the upper surface of the base 12, the upper surfaces of the outer legs 13, and the upper surfaces of the insertion portions 15 are arranged flush with each other. That is, the entire upper surface of the first magnetic core 11a is formed flat and arranged horizontally. Similarly, in the first magnetic core 11a, the lower surface of the base 12, the lower surfaces of the outer legs 13, and the lower surfaces of the insertion portions 15 are arranged flush with each other. That is, the entire lower surface of the first magnetic core 11a is formed flat and arranged horizontally.

[0015] 2, in this embodiment, the second magnetic core 11b is formed, for example, in the same shape as the first magnetic core 11a. That is, the second magnetic core 11b includes a base portion 12, a pair of outer legs 13, and an insertion portion 15. The base portion 12 has an upper surface, a lower surface, an inner surface, and an outer surface. The second magnetic core 11b is disposed symmetrically with respect to the front and rear of the first magnetic core 11a.

[0016] The tip surface in the protruding direction of each of the outer legs 13 of the first magnetic core 11a and the second magnetic core 11b is formed flat and forms a vertical surface perpendicular to the axial direction of the coil . Similarly, the tip surface of each of the first magnetic core 11a and the second magnetic core 11b in the protruding direction of the insertion portion 15 is formed flat and forms a vertical surface perpendicular to the axial direction of the coil . The inner and outer surfaces of the base 12 are also formed flat and are vertical surfaces perpendicular to the axial direction of the coil 70. The inner surface of the first magnetic core 11a and the inner surface of the second magnetic core 11b face each other, and the outer surface of the first magnetic core 11a and the outer surface of the second magnetic core 11b face in opposite directions.

[0017] As shown in FIG. 2, the bobbin portion 30 includes, for example, a cylindrical portion 31 and a pair of flange portions 40 provided on both ends of the cylindrical portion 31 in the axial direction, respectively. The cylindrical portion 31 is formed in a square cylindrical shape having an insertion hole 36 passing through in the axial direction. As shown in FIG. 2, the cylindrical portion 31 is configured to include upper and lower wall portions that are horizontally disposed, and right and left wall portions that are vertically disposed. For example, the internal space of the insertion hole 36 is shaped like a rectangular column. The bottom surface (inner peripheral bottom surface) and the top surface of the inner circumferential surface of the insertion hole 36 are horizontal surfaces, and the left side surface and the right side surface of the inner circumferential surface of the insertion hole 36 are vertical surfaces.

[0018] As shown in Figures 2, 3 and 4, the bobbin portion 30 has, for example, a pair of front and rear flange portions 40, i.e., a first flange portion 41 arranged on the front side and a second flange portion 42 arranged on the rear side. The first flange portion 41 and the second flange portion 42 each protrude from both ends of the tubular portion 31 toward the left and right of the tubular portion 31, for example. More specifically, each of the first flange portion 41 and the second flange portion 42 is formed, for example, in a flat plate shape perpendicular to the axial direction of the tubular portion 31 . The front-to-rear dimension (thickness dimension) of the first flange portion 41 is equal to the front-to-rear dimension (thickness dimension) of the second flange portion 42. The left-to-right dimension of the first flange portion 41 is equal to the left-to-right dimension of the second flange portion 42, and the top-to-bottom dimension of the first flange portion 41 is equal to the top-to-bottom dimension of the second flange portion 42. In addition, the right end face of the first flange portion 41 and the right end face of the second flange portion 42 are arranged flush with each other, and the left end face of the first flange portion 41 and the left end face of the second flange portion 42 are arranged flush with each other.

[0019] As shown in FIG. 2, the bobbin portion 30 further has a first protruding portion 46 that protrudes forward and in the left-right direction from the upper edge of the first flange portion 41. The first protruding portion 46 includes, for example, a pair of left and right angular portions 46a and a connecting portion 46b connecting the angular portions 46a to each other. Each of the pair of left and right angular portions 46a is formed in a substantially rectangular parallelepiped shape. As shown in Fig. 5, the right angular portion 46a protrudes rightward from the right end face of the first flange portion 41, and the left angular portion 46a protrudes leftward from the left end face of the first flange portion 41. The front surface of each of the pair of left and right angular portions 46a is disposed forward of the front surface of the first flange portion 41. The rear surface of each of the pair of left and right angular portions 46a is disposed flush with the rear surface of the first flange portion 41. The connecting portion 46b is formed, for example, in a generally rectangular parallelepiped shape that is elongated in the left-right direction. The right end of the connecting portion 46b is connected to the right angular portion 46a, and the left end of the connecting portion 46b is connected to the left angular portion 46a. The front surface of the connecting portion 46b is disposed forward of the front surface of the first flange portion 41 and rearward of the front surfaces of the pair of left and right angular portions 46a. The rear surface of the connecting portion 46b is disposed flush with the rear surface of the first flange portion 41. The upper surface of the connecting portion 46b is disposed slightly lower than the upper surfaces of the pair of left and right angular portions 46a.

[0020] 2 and 5, the bobbin portion 30 has a second protruding portion 47 that protrudes forward and in the left-right direction from the upper edge of the second flange portion 42. Similarly to the first protruding portion 46, the second protruding portion 47 includes, for example, a pair of left and right angular portions 46a and a connecting portion 46b connecting the angular portions 46a to each other. 5, the dimension of the connecting portion 46b of the second overhanging portion 47 in the left-right direction is set to be larger than the dimension of the connecting portion 46b of the first overhanging portion 46. In addition, the dimension of each angular portion 46a of the second overhanging portion 47 in the left-right direction is set to be smaller than the dimension of each angular portion 46a of the first overhanging portion 46. In addition, the upper surface of each angular portion 46a of the second overhanging portion 47 is disposed flush with the upper surface of the connecting portion 46b of the second overhanging portion 47. The right end face of the right angular portion 46a of the second overhanging portion 47 is disposed flush with the right end face of the right angular portion 46a of the first overhanging portion 46. Similarly, the left end face of the left angular portion 46a of the second overhanging portion 47 is disposed flush with the left end face of the left angular portion 46a of the first overhanging portion 46.

[0021] As shown in Figures 2, 3 and 4, the base member 20 has, as a terminal holding portion 50, a first terminal holding portion 52 arranged on the front side and a second terminal holding portion 55 arranged on the rear side. Each of the first terminal holding portion 52 and the second terminal holding portion 55 is formed, for example, in a generally rectangular column shape that is long in the left-right direction and has a flattened shape with a front-to-back dimension smaller than its top-to-bottom dimension. The first terminal holding portion 52 protrudes forward and in the left-right direction from the lower edge of the first flange portion 41. The second terminal holding portion 55 protrudes backward and in the left-right direction from the lower edge of the second flange portion . A downwardly recessed recess 57 is formed on the upper surface of each of the first terminal holding portion 52 and the second terminal holding portion 55. The recess 57 of the first terminal holding portion 52 is open toward the front, and the recess 57 of the second terminal holding portion 55 is open toward the rear. In this embodiment, the front-to-rear dimension of the first terminal holding portion 52 is equal to the front-to-rear dimension of the second terminal holding portion 55. The top-to-bottom dimension of the first terminal holding portion 52 is equal to the second terminal holding portion 55. The left-to-right dimension of the first terminal holding portion 52 is equal to the left-to-right dimension of the second terminal holding portion 55. However, the dimensional relationship between first terminal holding portion 52 and second terminal holding portion 55 is not particularly limited, and first terminal holding portion 52 and second terminal holding portion 55 may have different dimensions.

[0022] Furthermore, in this embodiment, the terminal holding portion 50 has a first extension portion 53 extending downward from the center of the first terminal holding portion 52 in the left-right direction, and a second extension portion 56 extending downward from the center of the second terminal holding portion 55 in the left-right direction. More specifically, a notch 54 that is open downward and in the front-rear direction is formed in the center of the first terminal holding portion 52 in the left-right direction. The first extending portion 53 is formed in the first terminal holding portion 52 in a region where the notch 54 is formed. Similarly, a notch 54 that is open downward and in the front-rear direction is formed in the center of the second terminal holding portion 55 in the left-right direction. The second extending portion 56 is formed in the area where the notch 54 is formed in the second terminal holding portion 55. The lower surface of each of the first extending portion 53 and the second extending portion 56 is formed flat and disposed horizontally. The lower surfaces of the first extending portion 53 and the second extending portion 56 are disposed at the same height as each other in the up-down direction. The lower surfaces of the first extending portion 53 and the second extending portion 56 are disposed lower than the lower surfaces of the first terminal holding portion 52 and the second terminal holding portion 55. More specifically, in this embodiment, the lower surface of the terminal holding portion 50 is constituted by the lower surfaces of the first extending portion 53 and the second extending portion 56.

[0023] As described above, the coil device 100 includes a plurality of (for example, four) metallic terminal members 60 that are electrically connected to the coil 70. Each of the terminal members 60 is formed, for example, by bending a plate-like metal member. Each of the terminal members 60 is formed, for example, in the same shape as each other. More specifically, the terminal member 60 includes, for example, an upright plate portion 68 that stands upright relative to the mounting surface. In the present embodiment, at least a part of the portion of the standing plate portion 68 that is disposed at a position different from the mounting terminal portion 65 when viewed from the bottom constitutes the stand-off portion 67. At least a part of the lower end surface of the standing plate portion 68 constitutes the lower surface 67a of the stand-off portion 67. Therefore, when applying a current to coil 70, contact probe 310 can be selectively brought into contact with stand-off portion 67 out of mounting terminal portion 65 and stand-off portion 67. This makes it possible to maintain the shape of mounting terminal portion 65 and the performance of coil component 100 in a good condition.

[0024] Furthermore, the terminal member 60 has an L-shaped portion including, for example, a downward extension portion 68a extending downward from the upright plate portion 68 and a horizontal extension portion 68b extending approximately horizontally from the lower end portion of the downward extension portion 68a, and the horizontal extension portion 68b constitutes the mounting terminal portion 65. This makes it possible to more reliably bring contact probe 310 into selective contact with stand-off portion 67 out of mounting terminal portion 65 and stand-off portion 67 when applying a current to coil 70 .

[0025] Here, it is preferable that the lower surface 67 a of the standoff portion 67 be located at a higher position than the lower surface 65 a of the mounting terminal portion 65 . By doing so, when a current is applied to coil 70, contact probe 310 can be selectively brought into contact with stand-off portion 67 out of mounting terminal portion 65 and stand-off portion 67 more reliably.

[0026] Moreover, it is preferable that the lower surface 67a of the standoff portion 67 is disposed horizontally. More specifically, as shown in Fig. 8, contact probe 310 extends vertically. Therefore, with this configuration, when applying a current to coil 70, the tip of contact probe 310 can be brought into even contact with lower surface 67a of standoff portion 67. Therefore, even if the tip of contact probe 310 is strongly pressed against lower surface 67a of standoff portion 67, the shape of standoff portion 67 can be favorably maintained. Therefore, for example, inspection of electrical characteristics can be repeatedly performed with good reproducibility.

[0027] Furthermore, the lower surface 67a of the standoff portion 67 is formed to be elongated in one horizontal direction. By doing so, the dimension of lower surface 67a of standoff portion 67 in the horizontal direction can be sufficiently ensured, so that the tip end of contact probe 310 can be brought into good contact with lower surface 67a of standoff portion 67. Furthermore, since contact probe 310 having a larger outer diameter at the tip can be used, a larger current can be applied to coil component 100 for a long period of time. This makes it possible to perform actual operation tests using a current transformer, aging tests, and detection of poor joints in terminal member 60 by measuring drop voltage.

[0028] As shown in FIG. 4, in the terminal member 60, the portion protruding from the terminal holding portion 50 includes a winding terminal portion 66 to which an end of the coil 70 is wound and electrically connected. The binding terminal portion 66 and the mounting terminal portion 65 are disposed at different positions from each other in a plan view. This makes it possible to prevent flux used in soldering or soot generated by laser welding from adhering to the mounting terminal portion 65 when the end of the coil 70 is fixed to the winding terminal portion 66. This makes it possible to more reliably maintain good performance of the coil component 100. As shown in Figures 1, 4 and 5, the terminal member 60 has an L-shaped portion including, for example, an upward extension portion extending upward from the upright plate portion 68 and a second horizontal extension portion extending approximately horizontally from the upper end of the upward extension portion, and the second horizontal extension portion constitutes the interlocking terminal portion 66. 4 and 5, in this embodiment, the protruding direction of the interlocking terminal portion 66 and the protruding direction of the mounting terminal portion 65 are the same as each other. Also, as shown in FIG. 7(b), when viewed from the tip side in the protruding direction of the interlocking terminal portion 66 and the mounting terminal portion 65, the interlocking terminal portion 66 and the mounting terminal portion 65 are disposed at positions offset from each other in the horizontal direction.

[0029] More specifically, as shown in Figures 7(b) and 7(c), the standing plate portion 68 is formed, for example, in a substantially rectangular flat plate shape. The standing plate portion 68 is disposed, for example, vertically. Each of the upper end surface and the lower end surface of the standing plate portion 68 is disposed, for example, horizontally. The plate surface of the standing plate portion 68 faces, for example, in the front-rear direction. The downward extending portion 68a is formed, for example, at one end of the lower end surface of the standing plate portion 68 in the left-right direction. The mounting terminal portion 65 (horizontal extending portion 68b) protrudes, for example, to one side in a direction perpendicular to the plate surface of the standing plate portion 68. The lower surface 65a of the mounting terminal portion 65 is disposed below the lower end surface of the standing plate portion 68. However, the downward extension 68a may be formed, for example, in the center of the lower end surface of the standing plate portion 68 in the left-right direction. The upward extending portion is formed, for example, at the end portion opposite to the side where the downward extending portion 68a is formed in the left-right direction on the upper end surface of the standing plate portion 68. The binding terminal portion 66 (second horizontal extending portion) protrudes, for example, in the same direction as the protruding direction of the mounting terminal portion 65. The upper surface of the binding terminal portion 66 is disposed above the upper end surface of the standing plate portion 68. As shown in Figures 7(c) and 7(d), the tip surface (the tip in the protruding direction) of the mounting terminal portion 65 and the tip surface (the tip in the protruding direction) of the interlocking terminal portion 66 are, for example, arranged flush with each other.

[0030] Each terminal member 60 includes, for example, a portion embedded in the terminal holding portion 50 and a portion not embedded, and the embedded portions are the upper portion of the standing plate portion 68, an upward extending portion extending upward from the standing plate portion 68, and a base end portion (the end portion opposite to the protruding direction) of the interlocking terminal portion 66. The lower portion of the standing plate portion 68 of each terminal member 60 is exposed downward from the lower surface of the terminal holding portion 50. In the present embodiment, the stand-off portion 67 is, for example, a portion (lower portion) of the standing plate portion 68 exposed downward from the terminal holding portion 50. Also, the lower surface (lower end surface) 67a of the stand-off portion 67 is, for example, a region where the downward extending portion 68a is not formed on the lower end surface of the standing plate portion 68. In this manner, the standing plate portion 68 is embedded in the terminal holding portion 50, and a portion of the standing plate portion 68 serves as the stand-off portion 67, so that the stand-off portion 67 has a structure in which deformation due to a force from below is suppressed. Therefore, even if the contact probe 310 is strongly pressed against the lower surface 67a of the stand-off portion 67, the shape of the stand-off portion 67 can be well maintained.

[0031] 7(c), the length dimension (dimension in the protruding direction) of the mounting terminal portion 65 is set to, for example, approximately the same as the length dimension (dimension in the protruding direction) of the binding terminal portion 66. In addition, the width dimension (dimension in the left-right direction) of the mounting terminal portion 65 is set to, for example, larger than the width dimension (dimension in the left-right direction) of the binding terminal portion 66. Also, as shown in Figures 7(b), 7(c) and 7(d), the dimension of the upright plate portion 68 in the left-right direction is set to be, for example, larger than the width dimension (dimension in the left-right direction) of the mounting terminal portion 65. This ensures sufficient structural strength for the standing plate portion 68, so that even if the contact probe 310 is strongly butted against the standoff portion 67, the shape of the standoff portion 67 can be well maintained. In addition, even if the coil component 100 is subjected to impact or vibration, it is possible to prevent stress from concentrating on the boundary portion (the downward extension portion 68a) between the standoff portion 67 and the mounting terminal portion 65. Therefore, the shape of the terminal member 60 can be more reliably maintained. Furthermore, the height difference between the lower surface 67a of the standoff portion 67 and the lower surface 65a of the mounting terminal portion 65 is shorter than the protruding length of the mounting terminal portion 65, for example. This allows the mounting terminal portion 65 to stably support the portion of the coil component 100 above the mounting terminal portion 65, thereby improving the durability of the coil component 100 against vibration.

[0032] As an example, of the four terminal members 60, two terminal members 60 (hereinafter, a pair of first terminal members 61) are held by the first terminal holding portion 52, and the remaining two terminal members 60 (hereinafter, a pair of second terminal members 62) are held by the second terminal holding portion 55. More specifically, the coil device 100 has a pair of first terminal members 61, the first terminal member 61 being arranged on the right side and the first terminal member 61 being arranged on the left side with respect to the axial center of the coil 70. Similarly, the coil device 100 has a pair of second terminal members 62, the second terminal member 62 being arranged on the right side and the second terminal member 62 being arranged on the left side with respect to the axial center of the coil 70.

[0033] Here, as shown in FIG. 5, it is preferable that the standoff portion 67 is disposed farther from the corner portion 80a of the coil device 100 than the mounting terminal portion 65 is in a plan view. By doing so, the mounting terminal portion 65 is positioned outboard of the standoff portion 67, so that the mounting terminal portion 65 can stably support the portion of the coil component 100 above the mounting terminal portion 65. More specifically, in this embodiment, each terminal member 60 is held by the terminal holding portion 50 (first terminal holding portion 52 and second terminal holding portion 55) with at least a portion of the stand-off portion 67 positioned closer to the axis of the coil 70 than the mounting terminal portion 65 in the left-right direction. As shown in FIG. 5, in this embodiment, the coil component 100 has four corners 80a arranged at the right front, left front, right rear, and left rear. Each standoff portion 67 is arranged farther from the nearest corner 80a among the four corners 80a than the corresponding mounting terminal portion 65. That is, the standoff portion 67 of the first terminal member 61 on the right side is arranged farther from the right front corner 80a than the corresponding mounting terminal portion 65. Similarly, the standoff portion 67 of the first terminal member 61 on the left side is arranged farther from the left front corner 80a than the corresponding mounting terminal portion 65, the standoff portion 67 of the second terminal member 62 on the right side is arranged farther from the right rear corner 80a than the corresponding mounting terminal portion 65, and the standoff portion 67 of the second terminal member 62 on the left side is arranged farther from the left rear corner 80a than the corresponding mounting terminal portion 65.

[0034] 5, the mounting terminal portion 65 and the binding terminal portion 66 of the right-side first terminal member 61 each protrude forward, for example. Also, a downward extension portion 68a is formed at the right end portion of the lower end surface of the standing plate portion 68. Therefore, the mounting terminal portion 65 is disposed on the right side of the standing plate portion 68. An upward extension portion is formed at the left end portion of the upper end surface of the standing plate portion 68. Therefore, the binding terminal portion 66 is disposed on the left side of the standing plate portion 68.

[0035] 7(a) and 7(b), the left first terminal member 61 is disposed in a position symmetrical to the right first terminal member 61. Thus, the mounting terminal portion 65 of the left first terminal member 61 is disposed on the left side of the standing plate portion 68, and the binding terminal portion 66 is disposed on the right side of the standing plate portion 68.

[0036] For example, the pair of second terminal members 62 are disposed in positions symmetrical in the front-rear direction to the pair of first terminal members 61. Therefore, the mounting terminal portion 65 and the binding terminal portion 66 of each of the second terminal members 62 protrude, for example, rearward.

[0037] Furthermore, the protruding length (dimension L1 shown in FIG. 3) of the standing plate portion 68 (standoff portion 67) from the terminal holding portion 50 in the vertical direction is not particularly limited, but is preferably 0.3 mm or more and 0.9 mm or less, and more preferably 0.6 mm or more and 0.8 mm or less. This can improve the durability of the coil device 100 against vibration. Furthermore, the dimension (dimension L2 shown in FIG. 3) of the portion of the standing plate portion 68 embedded in the terminal holding portion 50 in the vertical direction is not particularly limited, but is preferably, for example, 0.5 mm to 1.1 mm, and more preferably 0.6 mm to 0.8 mm. In this manner, the standing plate portion 68 and, in turn, the stand-off portion 67 can be stably held by the terminal holding portion 50. Therefore, deformation of the stand-off portion 67 can be suppressed, and, for example, inspection of electrical characteristics can be repeatedly performed with good reproducibility.

[0038] As shown in Figures 3, 6(a) and 6(b), in this embodiment, the coil 70 is, for example, composed of a coated wire 71 having a resin coating 72, and the coil 70 has a plurality of winding portions 75 wound around the bobbin portion 30. In this embodiment, the position of the front end of the winding portion 75 is determined by the rear surfaces of the first flange portion 41 and the first protrusion portion 46, and the rear end of the winding portion 75 is determined by the front surfaces of the second flange portion 42 and the second protrusion portion 47. More specifically, in the case of the present embodiment, the coil device 100 has, as the coil 70, a first coil and a second coil, for example. The first coil and the second coil are each formed of a coated wire 71. The coated wire 71 of the coil 70 is wound around the tubular portion 31 of the bobbin portion 30. A plurality of winding portions 75 (see FIG. 2) are formed by the coated wire 71 wound around the tubular portion 31. As shown in FIG. 3, at both ends of each coated wire 71, the metal wire 73 is exposed to the outside from the resin coating 72. Then, the metal wire 73 at both ends of each coated wire 71 is pulled out from the winding portion 75 and wound around the corresponding winding terminal portion 66, and is electrically connected to the terminal member 60. In this embodiment, both ends of each coated wire 71 are fixed to the mounting terminal portion 65 by solder 66a. For example, in the coated wire 71, the resin coating 72 of the portion drawn from the winding portion 75 toward the winding terminal portion 66 may be fused to the base member 20. This can improve the strength of the coil device 100 against vibration. 6(b), the coated wire 71 includes, for example, a metal wire 73. The resin coating 72 is applied to the outer surface of the metal wire 73.

[0039] Here, as shown in FIG. 6(b), in this embodiment, the plurality of winding portions 75 are fused to each other via the resin coating 72. This makes it possible to maintain the shape of the winding portion 75, that is, the state in which the covered wire 71 is wound, in a good condition. 6(b), the resin coatings 72 of adjacent winding portions 75 are fused together. In each winding portion 75, the metal wire 73 is preferably entirely covered with the resin coating 72. In other words, in the winding portion 75, the metal wire 73 is preferably not exposed to the outside of the resin coating 72.

[0040] Furthermore, as shown in FIG. 6(b), in this embodiment, the plurality of winding portions 75 and the bobbin portion 30 are fused to each other via a resin coating 72. This makes it possible to regulate the relative displacement of each of the wound portions 75 with respect to the bobbin portion 30 . More specifically, the resin coating 72 of the wound portion 75 wound around the outer circumferential surface of the tube portion 31 is fused to the outer circumferential surface.

[0041] 1, 2, 6, etc., the cover member 80 includes, for example, a top surface portion 81 that covers the upper side of the bobbin portion 30. More specifically, the cover member 80 includes a first side wall portion 82a and a second side wall portion 82b that respectively extend downward from the peripheral portion of the top surface portion 81, and a downward extension portion 84 that extends downward from the peripheral portion of the top surface portion 81. The top surface portion 81 is formed, for example, in a flat plate shape and is disposed horizontally. As shown in Fig. 5, the planar shape of the top surface portion 81 is, for example, substantially rectangular. The front left portion of the top surface portion 81 is a notched portion with a corner part cut away. This notched portion makes it easy to determine the orientation of the cover member 80. By providing the cover member 80 with the top surface portion 81, when mounting the coil component 100 on a substrate, the top surface portion 81 can be attracted by a mounter, facilitating the task of mounting the coil component 100 on a substrate. Note that the top surface portion 81 does not have to be formed flat, for example. Each of the first side wall portion 82a and the second side wall portion 82b is formed in a flat plate shape and is disposed vertically. The first side wall portion 82a extends downward, for example, from the lower surface of the right end portion of the top surface portion 81, and the second side wall portion 82b extends downward, for example, from the lower surface of the left end portion of the top surface portion 81. As shown in Fig. 5, for example, the first side wall portion 82a and the second side wall portion 82b face each other in the left-right direction. The right side surface of the first side wall portion 82a is disposed flush with the right side surface of the top surface portion 81, and the left side surface of the second side wall portion 82b is disposed flush with the left side surface of the top surface portion 81. The downward extension portion 84 is formed, for example, in a flat plate shape and is disposed vertically. The downward extension portion 84 extends downward from the center of the rear end portion of the top surface portion 81 in the front-rear direction, for example. The rear surface of the downward extension portion 84 is disposed flush with the rear end surface of the top surface portion 81.

[0042] Each of the first magnetic core 11a and the second magnetic core 11b is entirely formed integrally from a magnetic material. The base member 20 (the bobbin portion 30 and the terminal holding portion 50) is, for example, entirely integrally molded from an insulating material such as resin. The cover member 80 is, for example, entirely formed as a single unit from an insulating material such as resin.

[0043] In the case of this embodiment, the cover member 80 is attached to the bobbin part 30 so as to cover, for example, the upper end part of the bobbin part 30. More specifically, as shown in Figures 2, 3, 6(a), etc., the top surface part 81 covers the upper side of the bobbin part 30, the first side wall part 82a covers the right side of the upper end part of the bobbin part 30, and the second side wall part 82b covers the left side of the upper end part of the bobbin part 30.

[0044] 6(a), for example, the inner surface (lower surface) of the top surface portion 81 and the upper end surface of the first overhanging portion 46 and the upper end surface of the second overhanging portion 47 are in surface contact with each other. However, the inner surface of the top surface portion 81 and the upper end surface of the first overhanging portion 46 and the upper end surface of the second overhanging portion 47 may face each other in close proximity to each other. 3, the inner surface of the first side wall portion 82a is preferably disposed in parallel to and facing each of the right side surface of the first flange portion 41 and the right side surface of the second flange portion 42. The inner surface of the second side wall portion 82b is preferably disposed in parallel to and facing each of the left side surface of the first flange portion 41 and the left side surface of the second flange portion 42.

[0045] The insertion portion 15 of the first magnetic core 11a is inserted into the insertion hole 36 of the bobbin part 30 through a front opening of the insertion hole 36 (see FIG. 6(a)). Similarly, the insertion portion 15 of the second magnetic core 11b is inserted into the insertion hole 36 of the bobbin part 30 through a rear opening of the insertion hole 36. The tip surface of the insertion portion 15 of the first magnetic core 11a and the tip surface of the insertion portion 15 of the second magnetic core 11b are butted against each other inside the insertion hole 36. That is, the tip surface of the insertion portion 15 of the first magnetic core 11a and the tip surface of the insertion portion 15 of the second magnetic core 11b are in surface contact with each other. The first magnetic core 11a and the second magnetic core 11b form a closed magnetic circuit. As shown in FIG. 6, a coil 70 is wound around the bobbin portion 30, and the insertion portion 15 is inserted into the bobbin portion 30, so that the coil 70 is wound around the magnetic core 10.

[0046] 3 and 4, the left and right outer legs 13 of the first magnetic core 11a are disposed outside the bobbin portion 30. The inner surface of the right outer leg 13 faces each of the right side surface of the first flange 41 and the right side surface of the second flange 42, and the inner surface of the left outer leg 13 faces each of the left side surface of the first flange 41 and the left side surface of the second flange 42. The base 12 of the first magnetic core 11a is disposed in front of the bobbin portion 30, and the inner surface of the base 12 faces the front surface of the first flange 41. More specifically, the left and right outer legs 13 of the second magnetic core 11b are disposed outside the bobbin portion 30. The inner surface of the right outer leg 13 faces each of the right side surface of the first flange 41 and the right side surface of the second flange 42, and the inner surface of the left outer leg 13 faces each of the left side surface of the first flange 41 and the left side surface of the second flange 42. The base 12 of the second magnetic core 11b is disposed on the rear side of the bobbin portion 30, and the inner surface of the base 12 faces the rear surface of the second flange 42. The tip surface of the right outer leg 13 of the first magnetic core 11a and the tip surface of the right outer leg 13 of the second magnetic core 11b are butted against each other. That is, the tip surface of the right outer leg 13 of the first magnetic core 11a and the tip surface of the right outer leg 13 of the second magnetic core 11b are in surface contact with each other. Similarly, the tip surface of the left outer leg 13 of the first magnetic core 11a and the tip surface of the left outer leg 13 of the second magnetic core 11b are butted against each other. The lower surface of the insertion portion 15 is disposed along the bottom surface of the inner periphery of the insertion hole 36 .

[0047] As shown in FIG. 6(a), the lower surfaces of the first magnetic core 11a and the second magnetic core 11b are disposed on the same plane. The base portion 12 of the first magnetic core 11a is disposed above the first terminal holding portion 52 and is disposed along the upper surface of the first terminal holding portion 52. The base 12 of the second magnetic core 11b is disposed above the second terminal holding portion 55, and is disposed along the upper surface of the second terminal holding portion 55. The lower surfaces of the first magnetic core 11a and the second magnetic core 11b and the upper surface of the terminal holding portion 50 (the first terminal holding portion 52 and the second terminal holding portion 55) may be in surface contact with each other or may face each other in close proximity to each other.

[0048] Here, in the case of this embodiment, the cover member 80 has a second downward extending portion 87 extending downward from the peripheral edge portion of the top surface portion 81, and the second downward extending portion 87 has an engagement claw 88. As shown in FIG. 7, the engagement claw 88 engages with the bobbin portion 30. This makes it possible to maintain the state in which the cover member 80 is attached to the bobbin portion 30 in a good condition. More specifically, the cover member 80 has a pair of left and right second downward extension portions 87a (see Figure 2) located on the front side with respect to the bobbin portion 30, and a pair of left and right second downward extension portions 87b (see Figure 2) located on the rear side with respect to the bobbin portion 30. 6(a), the pair of second downward extending portions 87a on the front side extend downward from the front edge portion of the lower surface of the top surface portion 81. The pair of second downward extending portions 87a on the front side engage with the first protruding portion 46 of the bobbin portion 30, for example. The pair of rear second downward extending portions 87b extend downward from the rear edge portion of the lower surface of the top surface portion 81. The pair of rear second downward extending portions 87a engage with the second protruding portions 47 of the bobbin portion 30, for example. With this configuration, both the front second downward extension portion 87a and the rear second downward extension portion 87b are engaged with the bobbin portion 30 by an engagement structure, thereby regulating the relative displacement of the cover member 80 with respect to the bobbin portion 30 in the front-to-rear direction. Furthermore, since the two second downward extension portions 87 (the second downward extension portion 87a and the second downward extension portion 87b) are formed next to each other in the left-right direction, the relative displacement of the cover member 80 with respect to the bobbin portion 30 around the Z axis can be regulated.

[0049] Each of the pair of second downward extending portions 87a has, for example, a flat plate portion formed in a flat plate shape, and the plate surface of the flat plate portion faces the front-rear direction. The front end surface of each of the pair of second downward extending portions 87a is, for example, flush with the front end surface of the top surface portion 81. As shown in Figures 5 and 6(a), each engagement claw 88 of the pair of second downward extensions 87a protrudes, for example, from the rear end surface of the flat plate portion toward the bobbin portion 30 (rearward). The upper surface of the engagement claw 88 is formed flat and disposed horizontally. Meanwhile, a portion of the lower end of the engagement claw 88 is chamfered. Furthermore, the tip surface 88a (the tip in the protruding direction) of the engagement claw 88 is formed flat and disposed vertically. 5, the top surface 81 is formed with a first slit 89a penetrating the top surface 81 in the up-down direction. The first slit 89a extends in a substantially straight line in the left-right direction. The first slit 89a is adjacent to the flat plate portions of the pair of second downward extending portions 87a in the front-rear direction and is disposed forward of the flat plate portions.

[0050] 1 and 2, each of the pair of left and right second downward extending portions 87b is formed, for example, in a shape symmetrical in the front-rear direction with the pair of left and right second downward extending portions 87a. That is, each of the pair of second downward extending portions 87b has a flat plate portion and an engagement claw 88 protruding forward from a front end surface of the flat plate portion. The rear end surface of the flat plate portion of each of the pair of second downward extending portions 87b is disposed flush with the rear end surface of the top surface portion 81. 2, the rear second downward extension portion 87b is formed on each of the right and left sides of the front edge portion of the top surface portion 81, for example, in the left-right direction, with the downward extension portion 84 sandwiched therebetween. In other words, the downward extension portion 84 is disposed between the second downward extension portion 87b on the right side and the second downward extension portion 87b on the left side. 1, 2, and 5, the top surface portion 81 is formed with a pair of left and right second slit portions 89b penetrating the top surface portion 81 in the up-down direction. Each of the pair of second slit portions 89b extends in a substantially straight line in the left-right direction. The right second slit portion 89b is adjacent to the flat plate portion of the right second downward extension portion 87b in the front-rear direction and is disposed rearward of the flat plate portion. Similarly, the left second slit portion 89b is adjacent to the flat plate portion of the left second downward extension portion 87b in the front-rear direction and is disposed rearward of the flat plate portion.

[0051] Here, as shown in Figures 2, 5, and 6(a), a pair of left and right engaged portions 48 are formed on the connecting portion 46b of the first protrusion portion 46, with which the front pair of second downward extension portions 87a respectively engage. The right engaged portion 48 is formed at the right end of the front surface of the connecting portion 46b, and the left engaged portion 48 is formed at the left end of the front surface of the connecting portion 46b. Each engaged portion 48 protrudes forward from the front surface of the connecting portion 46b, for example. More specifically, the upper portion of each engaged portion 48 protrudes from the front surface of the connecting portion 46b in a tapered manner downward, and the lower portion of each engaged portion 48 protrudes from the front surface of the connecting portion 46b in a constant amount. The lower surface of the lower portion of each engaged portion 48 is, for example, formed flat and disposed horizontally.

[0052] 3, the engaging claws 88 of the second downward extending portions 87a engage with the respective engaged portions 48. When the cover member 80 is fitted onto the bobbin portion 30, the pair of second downward extending portions 87a are guided along the upper portions of the corresponding engaged portions 48 toward the lower portions of the engaged portions 48. The protruding length (front-to-back dimension) of the lower part of engaged part 48 is set, for example, to a dimension slightly smaller than the protruding length (front-to-back dimension) of engaging claw 88. In the up-down direction, the height position of the lower surface of the lower part of engaged part 48 is set to a height position approximately equal to the height position of the upper surface of engaging claw 88. In addition, in the front-to-back direction, the front end surface of the lower part of engaged part 48 faces a part of the rear end surface of the flat plate part of second downward extending part 87a. As shown in FIG. 5, the left side surface of the right angular portion 46a and the right side surface of the right second downward extension portion 87a face each other in the left-right direction. This prevents the right second downward extension portion 87a from moving to the right of the corresponding angular portion 46a in the left-right direction. Similarly, the right side surface of the left angular portion 46a and the left side surface of the left second downward extension portion 87a face each other in the left-right direction. This prevents the left second downward extension portion 87a from moving to the left of the corresponding angular portion 46a in the left-right direction. That is, the engagement of the engagement claw 88 with the engaged portion 48 can be well maintained.

[0053] Similarly, as shown in Figures 2, 5, 6 and 7, a pair of left and right engaged portions 48 are formed on the front surface of the connecting portion 46b of the second protrusion portion 47, with which the pair of left and right second downward extension portions 87b respectively engage. Each engaged portion 48 on the second overhanging portion 47 side is formed, for example, in a shape that is approximately symmetrical in the front-rear direction with each engaged portion 48 on the first overhanging portion 46 side. Therefore, each engaged portion 48 on the second overhanging portion 47 side protrudes rearward from the rear surface of the connecting portion 46b of the second overhanging portion 47. The engaging claws 88 of the second downward extending portions 87b engage with each of the engaged portions 48. When the cover member 80 is fitted onto the bobbin portion 30, the pair of second downward extending portions 87b are guided along the upper portions of the corresponding engaged portions 48 toward the lower portions of the engaged portions 48. The lower surfaces of the lower portions of the engaged portions 48 are in surface contact with the upper surfaces of the engaging claws 88. The tip surfaces 88a of the engaging claws 88 are in surface contact with the second side surface 42a. As shown in FIG. 4, the left side surface of the right angular portion 46a and the right side surface of the right second downward extension portion 87b face each other in the left-right direction. This prevents the right second downward extension portion 87b from moving to the right of the corresponding angular portion 46a in the left-right direction. Similarly, the right side surface of the left angular portion 46a and the left side surface of the left second downward extension portion 87b face each other in the left-right direction. This prevents the left second downward extension portion 87b from moving to the left of the corresponding angular portion 46a in the left-right direction. That is, the engagement state of the engagement claw 88 with the engaged portion 48 can be well maintained.

[0054] Here, in the case of this embodiment, the coil device 100 includes a first fixing tape 94 (see Figs. 1 and 5) wound around the magnetic core 10. The first fixing tape 94 maintains the state in which the insertion portions 15 of the first magnetic core 11a and the second magnetic core 11b are inserted into the insertion holes 36 of the bobbin part 30. Note that the first fixing tape 94 is omitted from illustration in Figs. 2, 3, and 4. More specifically, as shown in FIG. 4, the first fixing tape 94 is wound, for example, along the outer surface of the base 12 of the second magnetic core 11b, the outer surface of the front outer leg 13 of the second magnetic core 11b, the outer surface of the front outer leg 13 of the first magnetic core 11a, the outer surface of the base 12 of the first magnetic core 11a, the outer surface of the rear outer leg 13 of the first magnetic core 11a, the outer surface of the rear outer leg 13 of the second magnetic core 11b, and again along the outer surface of the base 12 of the second magnetic core 11b. In the present embodiment, the first fixing tape 94 is formed in a strip shape that is long in one direction. The first fixing tape 94 may be, for example, an adhesive tape on which an adhesive layer is formed in advance, or may be a strip-shaped member that is bonded with an adhesive when assembling the coil component 100.

[0055] Furthermore, in this embodiment, the coil device 100 includes a second fixing tape 92 (see Figs. 1 and 5) wound around each of the magnetic core 10 and the cover member 80. The second fixing tape 92 satisfactorily fixes the magnetic core 10 to each of the bobbin part 30 and the cover member 80. Note that the second fixing tape 92 is omitted from illustration in Figs. 2, 3, and 4. More specifically, as shown in Figures 4 and 6, the second fixing tape 92 is wrapped, for example, around the entire outer surface of the first fixing tape 94, and along the outer surface of the first protrusion 46, the outer surface of the second protrusion 47, the outer surface of the first side wall portion 82a, and the outer surface of the second side wall portion 82b. In this embodiment, the second fixing tape 92 is formed in a strip shape that is long in one direction. The second fixing tape 92 may be, for example, an adhesive tape on which an adhesive layer is formed in advance, or a strip-shaped member that is bonded using an adhesive when assembling the coil component 100. As shown in Fig. 6, a lower portion of the second fixing tape 92 is wrapped around the periphery of the first fixing tape 94.

[0056] The vertical dimension of the first fixing tape 94 is set, for example, to be approximately equal to the vertical dimension of the magnetic core 10. The vertical dimension of the second fixing tape 92 is, for example, larger than the vertical dimension of the magnetic core 10 and smaller than the vertical dimension of the cover member 80.

[0057] The coil component 100 according to this embodiment is configured as described above. As an example, the coil component 100 can be used as a high-voltage pulse transformer. However, the use of the coil component 100 is not limited to this example.

[0058] The coil device 100 can be assembled, for example, as follows. First, the coated wire 71 of the coil 70 (first coil and second coil) is wound around the tubular portion 31 of the bobbin portion 30. Each end of the coated wire 71 is wrapped around the corresponding wrapping terminal portion 66 of the terminal member 60, and fixed by welding or soldering. Next, the insertion portion 15 of the first magnetic core 11a is inserted into the insertion hole 36 from the front opening of the insertion hole 36, while the insertion portion 15 of the second magnetic core 11b is inserted into the insertion hole 36 from the rear opening of the insertion hole 36. Next, the cover member 80 is placed over the bobbin portion 30 from above. At this time, for example, the engaging claws 88 of the second downward extensions 87 are first positioned along the upper portions of the corresponding engaged portions 48. Then, the cover member 80 is pushed downwardly against the base member 20 until the engaging claws 88 of the second downward extensions 87 are engaged with the corresponding engaged portions 48. At this time, the engaging claws 88 of the second downward extensions 87 slide downwardly along the inclined surface of the upper portion of the corresponding engaged portion 48, and reach the underside of the lower portion of the engaged portion 48. In this manner, the cover member 80 is fitted onto the bobbin portion 30 . Next, the first fixing tape 94 is wound around the magnetic core 10 at least one turn. This makes it possible to fix the magnetic core 10 to the bobbin part 30. Furthermore, the second fixing tape 92 is wound around both the first fixing tape 94 and the cover member 80 at least one turn. This makes it possible to more reliably fix the magnetic core 10 to the cover member 80 and the bobbin part 30. Next, a current is passed through the coil component 100 to heat the coil 70. This causes the resin coating 72 of the coated wire 71 to melt due to the heat from the coil 70, and the resin coatings 72 of the adjacent winding portions 75 can be fused to each other. Furthermore, the resin coating 72 of the winding portion 75 wound around the outer circumferential surface of the tubular portion 31 can be fused to the outer circumferential surface. That is, the coil 70 and the bobbin portion 30 can be fused to each other. As described above, in the present embodiment, the coil component 100 is disposed at a position different from the mounting terminal portion 65 when viewed from the bottom, and includes a stand-off portion 67 exposed on the bottom surface side of the coil component 100. Therefore, as shown in Fig. 8, a current can be applied to the coil component 100 by bringing the tip of a contact probe 310 into contact with the bottom surface 67a of the corresponding stand-off portion 67. As a result, compared to applying a current to the coil component 100 via the mounting terminal portion 65, there is no risk of impairing the shape of the mounting terminal portion 65 or the performance of the coil component 100, and so a current can be applied to the coil component 100 for a longer period of time. Also, a larger current can be applied to the coil component 100. Therefore, the coil 70 can be caused to generate sufficient heat, and the coil 70 and the bobbin portion 30 can be fused to each other more reliably. The timing for heating the coil 70 is not particularly limited as long as it is at least after the coated wire 71 is wound around the bobbin portion 30. Furthermore, the coil 70 may be heated to melt the resin coating 72 when inspecting the electrical characteristics. In this manner, the coil component 100 is obtained.

[0059] Although the embodiments have been described above with reference to the drawings, these are merely examples of the present invention, and various configurations other than those described above can also be adopted.

[0060] For example, in the above, an example has been described in which the magnetic core 10 is configured to include two E cores, but the present invention is not limited to this example, and the magnetic core 10 may be configured to include an E core and an I core. Furthermore, the magnetic core 10 may be configured to include two T cores, or to include a T core and an I core. In this case, the overall shape of the magnetic core 10 is H-shaped in plan view.

[0061] In addition, in the above, an example has been described in which the magnetic core 10 has two components (first magnetic core 11a and second magnetic core 11b), but the magnetic core 10 may be an integrated whole, or may be configured with three or more components.

[0062] In the above, an example has been described in which the coil device 100 includes the stand-off portion 67. However, the present invention is not limited to this example, and the coil device 100 does not have to include the stand-off portion 67. Even in this case, the multiple winding portions 75 are fused to each other via the resin coating 72, so that the shape of the winding portion 75, i.e., the state in which the coated wire 71 is wound, can be well maintained. That is, the present invention is a coil component comprising a resin base member 20 having a bobbin portion 30 and a terminal holding portion 50, a coil 70 wound around the bobbin portion 30, and a plurality of metal terminal members 60 that are held in the terminal holding portion 50 by being partially embedded in the terminal holding portion 50 and to which the coil 70 is electrically connected, wherein the portion of the terminal member 60 protruding from the terminal holding portion 50 includes a mounting terminal portion 65, the coil 70 is composed of a coated wire 71 having a resin coating 72, and the coil 70 may be a coil component having a plurality of winding portions 75 wound around the bobbin portion 30, and the plurality of winding portions 75 are fused to each other via the resin coating 72. Also in this case, the coil device 100 may have the plurality of winding portions 75 and the bobbin portion 30 fused to each other via the resin coating 72 .

[0063] The present embodiment encompasses the following technical ideas. (1) a resin base member having a bobbin portion and a terminal holding portion; A coil wound around the bobbin portion; a plurality of metal terminal members each of which is held by the terminal holding portion as a result of a portion of the terminal members being embedded in the terminal holding portion, and each of which is electrically connected to the coil; A coil component comprising: In the terminal member, a portion protruding from the terminal holding portion is A mounting terminal portion; a stand-off portion that is disposed at a position different from the mounting terminal portion when viewed from the bottom and is exposed on a lower surface side of the coil component; Including coil components. (2) The coil component according to (1), wherein a lower surface of the standoff portion is positioned higher than a lower surface of the mounting terminal portion. (3) The coil component according to (1) or (2), wherein the lower surface of the standoff portion is arranged horizontally. (4) The coil component according to any one of (1) to (3), wherein the lower surface of the standoff portion is formed to be elongated in one horizontal direction. (5) The terminal member is a rising plate portion rising from the mounting surface, At least a part of a portion of the upright plate portion that is disposed at a position different from the mounting terminal portion in a bottom view constitutes the stand-off portion, The coil component according to (4), wherein at least a portion of a lower end surface of the upright plate portion constitutes a lower surface of the standoff portion. (6) The terminal member is The vertical plate portion has an L-shaped portion including a downward extension portion extending downward from the vertical plate portion and a horizontal extension portion extending substantially horizontally from a lower end of the downward extension portion, The coil component according to (5), wherein the horizontal extension portion constitutes the mounting terminal portion. (7) In the terminal member, a portion protruding from the terminal holding portion includes a winding terminal portion to which an end of the coil is wound and electrically connected, The coil component according to any one of (1) to (6), wherein the binding terminal portion and the mounting terminal portion are disposed at different positions from each other in a plan view. (8) The coil is made of a coated wire having a resin coating, the coil has a plurality of winding portions wound around the bobbin portion, The coil component according to any one of (1) to (7), wherein the plurality of winding portions are fused to each other via the resin coating. (9) The coil is made of a coated wire having a resin coating, the coil has a plurality of winding portions wound around the bobbin portion, The coil component according to any one of (1) to (8), wherein the plurality of winding portions and the bobbin portion are fused to each other via the resin coating. (10) A coil component according to any one of (1) to (9), wherein, in a plan view, the standoff portion is disposed farther from a corner of the coil component than the mounting terminal portion. (11) a resin base member having a bobbin portion and a terminal holding portion; A coil wound around the bobbin portion; a plurality of metal terminal members each of which is held by the terminal holding portion as a result of a portion of the terminal members being embedded in the terminal holding portion, and each of which is electrically connected to the coil; A coil component comprising: In the terminal member, a portion protruding from the terminal holding portion includes a mounting terminal portion, The coil is made of a coated wire having a resin coating, the coil has a plurality of winding portions wound around the bobbin portion, A coil component in which the plurality of winding portions are fused to each other via the resin coating. (12) The coil component according to (11), wherein the plurality of winding portions and the bobbin portion are fused to each other via the resin coating. [Explanation of symbols]

[0064] 10 Magnetic core 11a First magnetic core 11b Second magnetic core 12 base 13 External legs 15 Insertion section 20 Base material 30 Bobbin section 31 Cylinder part 36 Insertion hole 40 Flange 41 First flange 41a 1st side 42 Second flange 42a 1st side 46 1st overhang 46a Corner 46b Connection part 47 Second overhang 48 Engaged part 50 Terminal holding part 52 1st terminal holding part 53 1st extension part 54 Notch shape 55 2nd terminal holding part 56 Second extension part 57 Recess 60 Terminal section 61 1st terminal section 62 2nd terminal section 65 Mounting terminal part 66 Tie-up terminal 66a Soldering section 67 Standoff section 68 Standing plate part 68a Downward extension 68b Horizontal extension 70 Coil 71 Covered Wire 72 Resin coating 73 Metal wire 75 Winding section 80 Cover member 81 Top section 82a First side wall part 82b Second side wall part 84 Downward extension 87 Second downward extension part 88 Engagement claw 89a First slit section 89b Second slit section 92 Second Fixing Tape 94 First Fixing Tape 100 Coil parts 310 Contact Probe

Claims

1. a resin base member having a bobbin portion and a terminal holding portion; A coil wound around the bobbin portion; a plurality of metal terminal members each of which is held by the terminal holding portion as a result of a portion of the terminal members being embedded in the terminal holding portion, and each of which is electrically connected to the coil; A coil component comprising: In the terminal member, a portion protruding from the terminal holding portion is A mounting terminal portion; a stand-off portion that is disposed at a position different from the mounting terminal portion when viewed from the bottom and is exposed on a lower surface side of the coil component; Including, The lower surface of the stand-off portion is formed to be elongated in one horizontal direction, The terminal member is a rising plate portion rising from the mounting surface, the upright plate portion is wider than the mounting terminal portion in the one direction, When viewed from the bottom, at least a part of a portion of the upright plate portion that is disposed at a position different from the mounting terminal portion in the one direction constitutes the stand-off portion, A coil component in which at least a portion of a lower end surface of the upright plate portion forms a lower surface of the standoff portion.

2. The coil component according to claim 1 , wherein a lower surface of the standoff portion is located higher than a lower surface of the mounting terminal portion.

3. The coil component according to claim 1 , wherein a lower surface of the standoff portion is disposed horizontally.

4. The terminal member is The vertical plate portion has an L-shaped portion including a downward extension portion extending downward from the vertical plate portion and a horizontal extension portion extending substantially horizontally from a lower end of the downward extension portion, The coil component according to claim 1 , wherein the horizontal extension portion constitutes the mounting terminal portion.

5. In the terminal member, a portion protruding from the terminal holding portion includes a winding terminal portion to which an end of the coil is wound and electrically connected, The coil component according to claim 1 , wherein the winding terminal portion and the mounting terminal portion are disposed at different positions from each other in a plan view.

6. The coil is made of a coated wire having a resin coating, the coil has a plurality of winding portions wound around the bobbin portion, The coil component according to claim 1 , wherein the plurality of winding portions are fused to one another via the resin coating.

7. The coil is made of a coated wire having a resin coating, the coil has a plurality of winding portions wound around the bobbin portion, The coil component according to claim 1 , wherein the plurality of winding portions and the bobbin portion are fused to each other via the resin coating.

8. The coil component according to claim 1 , wherein, in a plan view, the standoff portion is disposed farther from a corner of the coil component than the mounting terminal portion.

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