JP4983389B2 - Coil parts - Google Patents

Description

  The present invention relates to a coil component, and more particularly to a coiled coil component.

As a coil component, a coil component is known that includes a winding, a core around which the winding is wound, and a pair of terminal fittings attached to the core (see, for example, Patent Document 1).
JP-A-8-153633

  However, the conventional coil components described above have the following problems. That is, the coil parts are known to deteriorate in characteristics such as AC loss and inductance due to eddy currents generated in the terminal fittings, but the countermeasures against such characteristic deterioration are insufficient. Therefore, the inventors have newly found a technique capable of significantly improving the above characteristic deterioration after intensive studies.

  Accordingly, the present invention has been made to solve the above-described problems, and an object thereof is to provide a coil component with improved characteristics.

  A coil component according to the present invention includes a winding, a winding around which the winding is wound and a pair of end faces facing each other, and a pair of terminal fittings attached to each end face of the winding core, Each terminal fitting has a facing portion disposed so as to face the end surface of the winding core, and a terminal portion that is continuous with the facing portion and is to be connected to a connection terminal provided on the mounting board. Includes a base continuous to the terminal portion and at least two pieces extending from the base with a predetermined distance from each other, and a tip portion of one of the at least two pieces is wound. It is located outside the outline of the end face of the core, and the end of the winding is connected.

  In the coil component according to the present invention, since at least two pieces extending from the base portion have a predetermined distance from each other, a portion where eddy current is generated in the terminal fitting is reduced. In addition, a relatively large path eddy current that occurs when only one piece extends from the base does not occur because the path is divided by a predetermined interval between at least two pieces. . Since the generation of eddy currents is suppressed in this way, the characteristics of the coil component in the present invention are improved.

  Furthermore, in this invention, the front-end | tip part of one piece part is located outside the outline of the end surface of a winding core among at least two piece parts. Thereby, the structure which can perform the connection of the said front-end | tip part and a coil | winding easily is realizable.

  Preferably, the terminal portion and the base portion are located on one side across the center line in the direction in which each piece portion on the end surface extends as viewed from the direction orthogonal to the end surface, and the tip portions of at least two piece portions are It is located on the other side across the center line. In this case, the length of at least two pieces becomes relatively long, and the portion where eddy current is generated in the terminal fitting can be further reduced. As a result, characteristics such as AC loss and inductance can be further improved.

  Preferably, the facing portion further includes a positioning portion extending from a middle portion of each of the at least two pieces in a direction intersecting with a direction in which the piece extends. In this case, it is possible to easily position the coil intermediate body having a configuration in which the pair of terminal fittings are attached to the winding core.

  The coil component according to the present invention includes a winding, a winding around which the winding is wound, a core having a pair of end faces facing each other, and a pair of terminal fittings attached to each end face of the winding core. Each terminal fitting is arranged so as to face the end face of the core, and both end portions in a first direction parallel to the end face are located on the outer side of the contour of the end face of the core. A terminal portion to be connected to a connection terminal provided on the mounting substrate, and the other end portion of the opposite end portions is connected to the connection terminal provided on the mounting substrate. The ends of the windings are connected, and the facing portion is formed with a notch extending from the other end portion toward the one end portion of the opposite end portions of the facing portion. And

  In the coil component according to the present invention, since the notched portion is formed in the facing portion, the portion where the eddy current is generated in the terminal fitting is reduced. Further, the eddy current of a relatively large path that occurs when the notch is not alerted to the facing part does not occur because the path is divided by the notch. Since the generation of eddy currents is suppressed in this way, the characteristics of the coil component in the present invention are improved.

  Furthermore, in this invention, the front-end | tip part of one piece part is located outside the outline of the end surface of a winding core among at least two piece parts. Thereby, the structure which can perform the connection of the said front-end | tip part and a coil | winding easily is realizable.

  Preferably, the cutout portion extends to a position exceeding the center line in the first direction of the end face as seen from the direction orthogonal to the end face. In this case, the length of the notch is relatively long, and the portion where eddy current is generated in the terminal fitting can be further reduced. As a result, characteristics such as AC loss and inductance can be further improved.

  Preferably, the facing portion includes positioning portions respectively extending from both end portions in a second direction parallel to the end surface and orthogonal to the first direction. In this case, it is possible to easily position the coil intermediate body having a configuration in which the pair of terminal fittings are attached to the winding core.

  Preferably, it further includes an exterior part arranged so as to cover at least a part of each of the winding, the core, and the pair of terminal fittings, and the positioning part is a mold used when resin molding the exterior part Abut. In this case, the said coil intermediate body can be stably arrange | positioned to a shaping | molding die, and an exterior part can be shape | molded appropriately.

  Preferably, the exterior portion is provided with a recess that is recessed toward the positioning portion.

  According to the present invention, a coil component with improved characteristics can be provided.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description, the same reference numerals are used for the same elements or elements having the same function, and redundant description is omitted.

  First, with reference to FIGS. 1-3, the structure of the coil component C1 which concerns on this embodiment is demonstrated. The coil component C1 is a surface mount type coil component. 1 and 2 are perspective views showing a coil component C1 according to the present embodiment. FIG. 3 is a diagram showing a cross-sectional configuration along the line III-III in FIG.

  As shown in FIGS. 1 and 2, the coil component C <b> 1 includes a winding core 1, a winding 9, a pair of terminal fittings 10, and an exterior part 30.

  The winding core 1 has a long cylindrical winding part 3 and a pair of flange parts 5 and 7 located at both ends of the winding part 3. The pair of eaves portions 5 and 7 has a shape protruding from the winding portion 3 in the circumferential direction, and is disposed substantially parallel to each other. The flange portions 5 and 7 have a cylindrical shape coaxial with the winding portion 3, and include a pair of main surfaces 5a, 5b, 7a and 7b and peripheral side surfaces 5c and 7c. The main surface 5a of the collar part 5 and the main surface 7a of the collar part 7 are opposed to each other. The main surfaces 5 b and 7 b of the flange portions 5 and 7 constitute the end surface of the core 1.

  The core 1 can be made of, for example, a magnetic material such as ferrite. In this embodiment, the space | interval between a pair of collar parts 5 and 7 in the core 1 is 5.6 mm. The outer diameters of the flange portions 5 and 7 are set to 2.2 mm. The outer diameter of the winding part 3 is 1.1 mm. The core 1 may be made of a resin (for example, a liquid crystal polymer).

  The winding 9 is wound around the winding portion 3 so as to be in contact with the winding portion 3 of the winding core 1 and is accommodated in a region sandwiched between the pair of flange portions 5 and 7 in the winding core 1. . The winding 9 is made of an insulating coated metal conductor wire (for example, a urethane wire having heat resistance). Copper or the like is used as the metal conductor. The outer diameter of the winding 9 is, for example, about 30 μm. The number of windings of the winding 9 is about 1500, and the winding tension is about 3 grams.

  Hereinafter, for convenience of explanation, the axial direction of the core 1 (winding portion 3) (the direction perpendicular to the main surfaces 5b and 7b of the flange portions 5 and 7) is the X direction, and the height when the coil component C1 is mounted. The direction is the Z direction, and the width direction of the coil component C1 orthogonal to the X direction and the Z direction is the Y direction.

  As shown in FIGS. 4 and 5, the terminal fitting 10 has a facing portion 12 and a terminal portion 20. FIG. 4 is a perspective view showing the terminal fitting. FIG. 5 is a front view showing the terminal fitting. Each terminal fitting 10 is attached to the main surfaces 5b and 7b of the flange portions 5 and 7. In the present embodiment, each terminal fitting 10 is fixed to the flange portions 5 and 7 via the adhesive material 11. The terminal fitting 10 is a member obtained by forming a metal piece using a known forming technique, and the facing portion 12 and the terminal portion 20 are integrally formed. The terminal fitting 10 is made of, for example, a copper alloy, and is tin-plated except for the inner surface 10b on the winding core 1 side.

  The facing portion 12 is a portion that contacts (or is close to) the main surfaces 5 b and 7 b of the flange portions 5 and 7 when the terminal fitting 10 is attached to the core 1. That is, the facing portion 12 is disposed so as to face the main surfaces 5 b and 7 b of the flange portions 5 and 7.

  The facing portion 12 includes a base portion 14, three pieces 16 to 18, and a positioning portion 19. The base 14, the three pieces 16 to 18, and the positioning part 19 are integrally formed. The base portion 14 is continuous with the terminal portion 20. That is, the facing portion 12 is continuous with the terminal portion 20 at one end portion of both end portions in the Z direction (first direction) parallel to the main surfaces 5 b and 7 b of the flange portions 5 and 7.

  Each piece 16-18 extends in the Z direction from the base 14 at a predetermined interval. As a result, two notch portions 22 extending from the other end portion toward the one end portion of the both end portions of the facing portion 12 are formed in the facing portion 12.

  As shown in FIGS. 6 and 7, the facing portion 12 is configured such that the both end portions are the main surfaces 5 b and 7 b of the flange portions 5 and 7 when viewed from the direction orthogonal to the main surfaces 5 b and 7 b of the flange portions 5 and 7. It is located outside the outline. That is, the tip portions of the pieces 16 to 18 are positioned outside the contours of the main surfaces 5b and 7b of the flanges 5 and 7 when viewed from the direction orthogonal to the main surfaces 5b and 7b of the flanges 5 and 7. is doing. FIG. 6 is a side view showing the coil component according to the present embodiment. FIG. 7 is a front view showing the coil component according to the present embodiment. 6 and 7, the exterior portion 30 is not shown.

  The end of the winding 9 is connected to the tip of the piece 16. Thereby, the edge part of the coil | winding 9 will be connected to the other edge part among the said both ends of the facing part 12. FIG. Each end of the winding 9 is fixed by laser welding, arc welding, or the like in a state where it is entangled with the tip of the corresponding piece 16.

  The positioning part 19 is a direction (this embodiment) that intersects the direction (Z direction) in which the piece parts 16 and 18 extend from the middle part of the piece parts 16 and 18 located on both sides in the Y direction among the three piece parts 16 to 18. In the form, it extends in the Y direction perpendicular to the Z direction. That is, the positioning portion 19 extends from both end portions of the facing portion 12 in the Y direction parallel to the main surfaces 5b and 7b of the flange portions 5 and 7 and perpendicular to the Z direction. The distal end portion of the positioning portion 19 is also located outside the contours of the main surfaces 5b and 7b of the flange portions 5 and 7 when viewed from the direction orthogonal to the main surfaces 5b and 7b of the flange portions 5 and 7.

  The terminal portion 20 extends in the X direction from the one end portion of the facing portion 12. The terminal portion 20 is formed by being bent at a right angle from the facing portion 12. The terminal portion 20 is formed over the entire edge of the one end portion of the facing portion 12. The terminal portion 20 is a portion connected to the connection terminal T arranged on the mounting substrate MB when the coil component C1 is mounted on the mounting substrate MB from the Z direction.

  By the way, when the base 14 and the terminal part 20 are seen from the direction orthogonal to the main surfaces 5b and 7b of the collar parts 5 and 7, the direction in which each piece 16-18 in the main surfaces 5b and 7b of the collar parts 5 and 7 extends. It is located on one side across the center line CL in the (Z direction), and the tip portions of the pieces 16 to 18 are located on the other side across the center line CL. That is, each notch 22 is located at a position exceeding the center line CL in the Z direction of the main surfaces 5b, 7b of the flanges 5, 7 when viewed from the direction orthogonal to the main surfaces 5b, 7b of the flanges 5, 7. It extends to.

  Again referring to FIG. 1 and FIG. The exterior portion 30 is disposed so as to cover at least a part of each of the winding 9, the core 1, and the pair of terminal fittings 10. The exterior portion 30 also covers a portion 24 where the winding 9 and the piece portion 16 are connected, and protects the portion 24. The exterior part 30 consists of resin (for example, silicone resin etc.), and is formed by resin molding. The outer shape of the exterior part 30 is a substantially prismatic shape, and the top surface 30a of the exterior part 30 that functions as an adsorption surface during surface mounting is a substantially flat surface. The exterior portion 30 is provided with a recess 32 that is recessed toward the positioning portion 19.

  Next, a procedure for producing the coil component C1 described above will be described with reference to FIGS. 8 to 10 and FIGS. 13 to 17 are views showing one stage of manufacturing the coil component according to the present embodiment. 11 and 12 are diagrams showing a mold used for manufacturing the coil component according to the present embodiment.

  First, as shown in FIG. 8, the core 1 having the above-described shape is prepared. Then, as shown in FIG. 9, a pair of terminal fittings 10 are attached to the core 1. Here, an adhesive material is attached to at least one of the facing portion 12 or the main surfaces 5b and 7b of the flange portions 5 and 7, and the facing portion 12 of the terminal fitting 10 is connected to the main surfaces 5b and 7b of the flange portions 5 and 7; The terminal fitting 10 is bonded to the flange portions 5 and 7 from the inner surface 10b side so as to face each other. As a result, the facing portion 12 and the flange portions 5 and 7 are bonded together, and the pair of terminal fittings 10 are fixed to the core 1.

  Next, after attaching the terminal fitting 10 to the core 1, the winding 9 is wound around the winding portion 3 of the core 1 as shown in FIG. 10. And each end part of the coil | winding 9 is connected to the front-end | tip part of the one part 16 of the terminal metal fitting 10 by laser welding or arc welding. Thereby, the coil intermediate body 40 in which the terminal fitting 10 and the winding 9 are attached to the core 1 is obtained. In FIG. 10, for explanation, one end of the winding is in a state of being entangled with the tip of the piece 16 of the terminal fitting 10.

Next, as shown in FIG. 11 and FIG. 12, a mold 50 for forming an exterior part is prepared. The mold 50 is provided with a cavity 52 having a substantially square cross section corresponding to the shape of the exterior portion 30. The cavity 52 has a size that can accommodate the entire coil intermediate 40. Bottom 52a of the cavity 52 is a flat surface, each corner portion of the cavity 52, the pedestal portion 54 of a height h ₁ is formed along its entire length.

  Then, as shown in FIG. 13, after a predetermined amount of resin 60 to be the exterior portion 30 is injected into the cavity 52 of the mold 50 (an amount enough to fill the cavity 52 by about two thirds), The coil intermediate body 40 is put into the 52 from the front end side of the pieces 16 to 18, and the coil intermediate body 40 is immersed in the resin 60. At this time, as shown in FIGS. 14 and 15, each positioning portion 19 of the facing portion 12 of the terminal fitting 10 contacts the pedestal portion 54 provided at the four corners of the cavity 52. In FIGS. 14 and 15, the resin 60 is not shown for easy viewing of the drawings.

As shown in FIG. 15, the height h ₁ of the pedestal portion 54 is the length d ₁ from the portion 24 where the piece 16 of the facing portion 12 and the winding 9 are connected to the positioning portion 19. The portion 24 where the winding 9 and the piece 16 are connected is separated from the bottom surface 52a of the cavity 52 by a predetermined length. In this way, the coil intermediate body 40 is stably supported by the positioning portion 19 at four points (four corners). Further, the portion 24 where the winding 9 and the piece 16 are connected is covered with the resin 60.

  As shown in FIG. 11 and FIG. 12, a protrusion 56 extending in the depth direction of the cavity 52 is formed on the surface facing the longitudinal direction of the cavity 52 among the five surfaces defining the cavity 52. . The protrusion 56 defines the position of the coil intermediate body 40 in the longitudinal direction of the cavity 52 in the cavity 52. As a result, the outer surface 10 a of the terminal fitting 10 is reliably covered with the resin 60.

  Thereafter, a thermosetting process is performed on the resin 60 to fix the resin 60 to the coil intermediate body 40.

  Finally, the coil intermediate body 40 is taken out from the mold 50, and the coil component C1 in which the exterior portion 30 is formed on the coil intermediate body 40 is completed (see FIGS. 16 and 17). Thus, by forming the exterior part 30 using the mold 50, it is not necessary to prepare a molding machine that is necessary in the conventional molding, and simplification of molding equipment, simplification of molding work, and the like are achieved. be able to.

  Here, the eddy current generated in the coil component C1 will be described. When a current flows through the coil 9 wound around the winding portion 3, a magnetic field is generated in the coil component C <b> 1 in a direction substantially orthogonal to the facing portion 12 of the terminal fitting 10. And the eddy current arises in the surface 12 resulting from the change of the magnetic field in the facing part 12 of the terminal metal fitting 10. Since this eddy current deteriorates characteristics such as AC loss and inductance, it is necessary to reduce it as much as possible.

  In the coil component C1, the pieces 16 to 18 extending from the base portion 14 have a predetermined distance from each other, that is, the notched portion 22 is formed in the facing portion 12, so that the eddy current flows. The area of the portion is reduced, thereby effectively suppressing the influence of eddy currents.

  In the case of a coil component having a configuration in which the notch portion 22 is not formed in the facing portion 12, an eddy current EC (represented by a one-dot chain line in FIG. 7) of a relatively large path is generated in the facing portion 12, and the coil component. It greatly affects the characteristics of Therefore, in the coil component C1, the path of the eddy current EC as described above is divided by a predetermined interval between the respective pieces 16 to 18, that is, the notch 22, to avoid the occurrence thereof.

  From the above, the coil component C1 according to the present embodiment has improved characteristics such as AC loss and inductance, and can achieve high characteristics.

  In the present embodiment, the base portion 14 and the terminal portion 20 sandwich the center line CL of the main surfaces 5b, 7b of the flange portions 5, 7 when viewed from the direction orthogonal to the main surfaces 5b, 7b of the flange portions 5, 7. Located on one side, the tip portions of the pieces 16 to 18 are located on the other side across the center line CL. That is, each notch 22 extends to a position exceeding the center line CL of the main surfaces 5b, 7b of the flanges 5, 7 when viewed from the direction orthogonal to the main surfaces 5b, 7b of the flanges 5, 7. . Thereby, the length (notch part 22) of each piece parts 16-18 becomes comparatively long, and the part which an eddy current generate | occur | produces in the terminal metal fitting 10 can be reduced further. As a result, the coil component C1 further improves characteristics such as AC loss and inductance.

  In the present embodiment, the tip end portion of the piece portion 16 is located outside the contours of the main surfaces 5b and 7b of the flange portions 5 and 7. Thereby, when connecting the front-end | tip part of the piece part 16, and the coil | winding 9, the collar parts 5 and 7 of the core 1 do not become obstructive, and the front-end | tip part of the piece part 16 and the coil | winding 9 It is possible to realize a configuration that can be easily connected to.

  In the present embodiment, the facing portion 12 further includes a positioning portion 19. Thereby, positioning of the coil intermediate body 40 can be performed easily.

  The preferred embodiments of the present invention have been described above. However, the present invention is not necessarily limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

  For example, the mode of the terminal fitting 10 can be changed to the mode shown in FIGS. 18 and 19, for example. In the terminal fitting 10 shown in FIGS. 18 and 19, the facing portion 12 includes two pieces 16, 18, and one notch portion 22 is formed in the facing portion 12. Further, the facing portion 12 may include four or more pieces.

  In the present embodiment, the notch 22 extends to a position exceeding the center line CL of the main surfaces 5b, 7b of the flanges 5, 7 when viewed from the direction orthogonal to the main surfaces 5b, 7b of the flanges 5, 7. However, it is not limited to this. For example, the notch 22 does not have to exceed the center line CL of the main surfaces 5b, 7b of the flanges 5, 7 when viewed from the direction orthogonal to the main surfaces 5b, 7b of the flanges 5, 7. However, in this case, since the effect of suppressing the generation of eddy current is diminished, the notch 22 is in a direction orthogonal to the main surfaces 5b and 7b of the flanges 5 and 7, as in the present embodiment. When viewed from the top, it preferably extends to a position exceeding the center line CL of the main surfaces 5b, 7b of the flanges 5,7.

  In the present embodiment, the tip portions of the pieces 16 to 18 are outside the contours of the main surfaces 5b and 7b of the flanges 5 and 7 when viewed from the direction orthogonal to the main surfaces 5b and 7b of the flanges 5 and 7. However, it is not limited to this. For example, the tip portions of the pieces 17 and 18 are located inside the contours of the main surfaces 5b and 7b of the flanges 5 and 7 when viewed from the direction orthogonal to the main surfaces 5b and 7b of the flanges 5 and 7. May be.

  The cross-sectional shape of the winding part 3 and the flange parts 5 and 7 of the core 1 is not limited to a circle, but may be changed to a square or the like as necessary. Further, the extending direction of the cutout portion 22 of the terminal fitting 10 (the direction in which the pieces 16 to 18 extend) is not limited to the height direction (Z direction) of the coil component C1, and is a direction inclined by a predetermined angle from this direction. It may be.

It is a perspective view which shows the coil components which concern on this embodiment. It is a perspective view which shows the coil components which concern on this embodiment. It is a figure which shows the cross-sectional structure along the III-III line of FIG. It is a perspective view which shows a terminal metal fitting. It is a front view which shows a terminal metal fitting. It is a side view which shows the coil components which concern on this embodiment. It is a front view which shows the coil components which concern on this embodiment. It is a figure which shows one manufacture stage of the coil components which concern on this embodiment. It is a figure which shows one manufacture stage of the coil components which concern on this embodiment. It is a figure which shows one manufacture stage of the coil components which concern on this embodiment. It is a figure which shows the type | mold used for manufacture of the coil components which concern on this embodiment. It is a figure which shows the type | mold used for manufacture of the coil components which concern on this embodiment. It is a figure which shows one manufacture stage of the coil components which concern on this embodiment. It is a figure which shows one manufacture stage of the coil components which concern on this embodiment. It is a figure which shows one manufacture stage of the coil components which concern on this embodiment. It is a figure which shows one manufacture stage of the coil components which concern on this embodiment. It is a figure which shows one manufacture stage of the coil components which concern on this embodiment. It is a figure which shows the modification of a terminal metal fitting. It is a figure which shows the modification of a terminal metal fitting.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Winding core, 3 ... Winding part, 5,7 ... Gutter part, 9 ... Winding, 10 ... Terminal metal fitting, 12 ... Face part, 14 ... Base part, 16-18 ... Single part, 19 ... Positioning part, 20 ... Terminal part, 22 ... Notch part, 30 ... Exterior part, C1 ... Coil component.

Claims (8)

Windings,
A winding core having a pair of end faces facing each other and circular, the winding being wound;
A pair of terminal fittings attached to each end face of the core, and
Each terminal fitting is
A facing portion arranged to face the end surface of the core;
A terminal portion to be connected to the connection terminal provided on the mounting substrate, continuous to the facing portion;
The facing portion is
A base continuous with the terminal portion;
And at least two pieces extending from the base at a predetermined distance from each other,
The tip portion of one of the at least two pieces is located outside the outline of the end surface of the core and the direction in which each piece in the outline extends as seen from the axial direction of the core. A coil component, wherein the coil part is located at a position that is parallel to the end face and shifted in a direction perpendicular to a direction in which each piece extends, and the end of the winding is connected. The terminal portion and the base portion are located on one side across a center line in a direction in which each piece portion on the end surface extends, as viewed from a direction orthogonal to the end surface,
2. The coil component according to claim 1, wherein tip portions of the at least two pieces are located on the other side of the center line.   3. The coil component according to claim 1, wherein the facing portion further includes a positioning portion extending from a middle portion of each of the at least two pieces in a direction intersecting with a direction in which the piece extends. 4. . Windings,
A winding core having a pair of end faces facing each other and circular, the winding being wound;
A pair of terminal fittings attached to each end face of the core, and
Each terminal fitting is
The facing portion is disposed so as to face the end surface of the core, and both end portions in a first direction parallel to the end surface are positioned outside the contour of the end surface of the core;
A terminal portion to be connected to a connection terminal provided on the mounting substrate, continuous to one end portion of the both end portions of the facing portion;
The other end portion of the both end portions of the facing portion is connected to the end portion of the winding,
The facing portion is formed with a notch that extends from the other end portion of the facing portion toward the one end portion,
The portion where the end portion of the winding in the facing portion is connected is located outside the contour of the end surface of the core, and the notch portion in the contour is seen from the axial direction of the core. A coil component, wherein the coil component is positioned so as to be shifted from an outermost position in an extending direction in a direction parallel to the end face and perpendicular to a direction in which the notch extends .   5. The coil component according to claim 4, wherein the cutout portion extends to a position exceeding a center line in the first direction of the end surface when viewed from a direction orthogonal to the end surface.   6. The coil according to claim 4, wherein the facing portion includes positioning portions respectively extending from both end portions in a second direction parallel to the end surface and perpendicular to the first direction. parts. And further comprising an exterior part disposed to cover at least a part of each of the winding, the core and the pair of terminal fittings,
The coil component according to claim 3 or 6, wherein the positioning portion abuts on a mold used when the exterior portion is resin-molded.   The coil component according to claim 7, wherein the exterior portion is provided with a recess that is recessed toward the positioning portion.

Images