Coil component and method for manufacturing coil component

Abstract

A coil component (100) is provided with a magnetic core (10), a coil (90), a main body member (20) having a base portion (30) in which a fitting recess (50) is formed, and a terminal member (80) fitted to the fitting recess (50) by a fitting structure, the fitting recess (50) including a pair of first planar portions facing each other, the first planar portions (50) including a pair of second planar portions facing each other, and the second planar portions (50) including a pair of second planar portions facing each other. At least a portion of the terminal member (80) is disposed between the pair of first surface-shaped portions, and the fitting structure is one or more protrusions (55) formed in the fitting recess (50), the protrusions (55) being flattened between the terminal member (80) and one of the first surface-shaped portions, and the protrusions (55) being flattened between the terminal member (80) and the other of the first surface-shaped portions. The terminal member (80) is fitted to the fitting recess (50) in a state in which the terminal member (80) is pressed by the protrusion (55) toward at least the other of the pair of first planar portions.

Description

TECHNICAL FIELD

[0001] The present application relates to a coil component and a manufacturing method of a coil component. BACKGROUND

[0002] As a coil component, for example, there is a coil component described in Patent Literature 1.

[0003] The coil component of Patent Literature 1 has a magnetic core, a coil wound around the magnetic core, and a plurality of terminal members made of metal that are electrically connected to the coil, and a recess is formed in the magnetic core, and the terminal members are directly fixed to the recess by an adhesive.

[0004] PRIOR ART DOCUMENTS

[0005] PATENT LITERATURE

[0006] Patent Literature 1: Japanese Patent Application Publication No. 2016-4874 SUMMARY

[0007] PROBLEMS TO BE SOLVED BY THE INVENTION

[0008] According to the research of the present inventor, in the configuration of the coil component of Patent Literature 1, there is still room for improvement in terms of ease of manufacturing of the coil component.

[0009] The present application has been achieved in view of the above-described problems, and provides a coil component of a configuration excellent in ease of manufacturing and a manufacturing method of a coil component.

[0010] MEANS FOR SOLVING THE PROBLEMS

[0011] According to the present application, there is provided a coil component having: a magnetic core; a coil wound around the magnetic core; a main body member having a base portion; and a plurality of terminal members made of metal that are electrically connected to the coil, an engagement recess is formed in the base portion, the terminal members are engaged with the engagement recess by an engagement configuration, wherein the engagement recess includes a pair of first flat portions facing each other, at least a part of the terminal members is disposed between the pair of first flat portions, the engagement configuration is one or a plurality of protrusions formed in the engagement recess, the protrusion is formed in the first flat portion of at least one of the pair of first flat portions, the protrusion protrudes toward the terminal member and is flattened between the terminal member and the first flat portion, and the terminal member is engaged with the engagement recess in a state pressed by the protrusion toward the first flat portion of the other of the pair of first flat portions.

[0012] Further, according to the present application, there is provided a manufacturing method of a coil component, which is a method of manufacturing a coil component by fitting a plurality of terminal components to a base portion, wherein the manufacturing method has the following steps: preparing a main body component having the base portion, a fitting recess portion formed in the base portion, and one or a plurality of protrusions formed in the fitting recess portion; and while flattening the one or a plurality of protrusions with the terminal component, pressing the terminal component into the fitting recess portion.

[0013] Effects of Invention

[0014] According to the present application, it is possible to realize a coil component of a configuration excellent in manufacturing easiness. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a perspective view of a coil component of an embodiment.

[0016] Figure 2 is an exploded perspective view of a coil component of an embodiment.

[0017] Figure 3 is a plan view of a coil component of an embodiment.

[0018] Figure 4 is a bottom view of a coil component of an embodiment.

[0019] Figure 5 is a sectional view along the line A-A shown in Figure 3 .

[0020] Figure 6 is a front view of a coil component of an embodiment.

[0021] Figure 7 is a perspective view of a main body component in an embodiment.

[0022] Figure 8 is a side view of a main body component in an embodiment.

[0023] Figure 9 is a partial enlarged view showing a first core fitting portion and its surrounding configuration in an embodiment, and is a sectional view along the line A-A shown in Figure 6 .

[0024] Figure 10 (a) of is a partial enlarged view of a first fitting recess portion, Figure 10 (b) of shows a state in which a terminal component is fitted to the fitting recess portion from the state shown in (a) of Figure 10 .

[0025] Figure 11 (a) of is a sectional view along the line A-A shown in (a) of Figure 10 .Figure 11 (b) shows a state in which the terminal member is fitted to the fitting recess from the state shown in Figure 11 (a) of FIG. 1.

[0026] Figure 12 (a) of FIG. 1 is Figure 10 (a) of FIG. 1 is a partial enlarged view of A portion shown in Figure 12 (b) of FIG. 1 is Figure 11 (b) of FIG. 1 is a partial enlarged view of B portion shown in Figure 12 (c) of FIG. 1 is a sectional view along A-A line shown in Figure 12 (b) of FIG. 1.

[0027] Figure 13 (a) and Figure 13 (b) of FIG. 2 are views for explaining a manufacturing method of the coil member of the embodiment, in which, Figure 13 (a) of FIG. 2 shows a state in which the terminal member jumps over the front end portion of the first protrusion, Figure 13 (b) of FIG. 2 shows a state in which the terminal member is fitted to the fitting recess from the state shown in Figure 13 (a) of FIG. 2.

[0028] Figure 14 is a perspective view of the coil member of Modification 1 of the embodiment.

[0029] Figure 15 (a) and Figure 15 (b) of FIG. 3 are views showing the coil member of Modification 1 of the embodiment, in which, Figure 15 (a) of FIG. 3 is a sectional view, Figure 15 (b) of FIG. 3 is a partial enlarged view of the fitting recess.

[0030] Figure 16 is a perspective view of the coil member of Modification 2 of the embodiment.

[0031] Figure 17 (a) and Figure 17 (b) of FIG. 4 are views showing the coil member of Modification 2 of the embodiment, in which, Figure 17 (a) of FIG. 4 is a sectional view, Figure 17 (b) of FIG. 4 is a partial enlarged view of the fitting recess. DETAILED DESCRIPTION

[0032] Hereinafter, the embodiment of the present application will be described using Figures 1 to 13 (b) of FIG. 4. Also, in Figure 13 (a) and Figure 13 (b) of FIG. 4, the terminal member 80 is illustrated with a double-dot chain line.

[0033] Also, in all the drawings, the same reference numerals are attached to the same constituent elements, and the description is omitted as appropriate.

[0034] As shown in Figures 1 to 5 The coil component 100 of the present embodiment has a magnetic core 10, a coil 90 wound around the magnetic core 10, a main body component 20 having a base portion 30, and a plurality of terminal components 80 made of metal, which are electrically connected to the coil 90, respectively.

[0035] The base portion 30 is formed with a fitting recess 50, and the terminal components 80 are fitted to the fitting recess 50 by a fitting configuration.

[0036] The fitting recess 50 includes a pair of first planar portions (a pair of first side surface portions 53 described later in the case of the present embodiment) facing each other, and at least a part of the terminal components 80 is disposed between the pair of first planar portions.

[0037] The fitting configuration is one or a plurality of protrusions 55 formed in the fitting recess 50. The protrusion 55 is formed in the first planar portion of at least one of the pair of first planar portions, protrudes toward the terminal component 80, and is flattened between the terminal component 80 and the first planar portion.

[0038] The terminal component 80 is fitted to the fitting recess 50 in a state of being pressed by the protrusion 55 toward the first planar portion of the other of the pair of first planar portions.

[0039] In addition, in the present embodiment, the first planar portion (and the second planar portion described later) is not limited to a flat planar portion, and for example, can be a planar portion formed in a stepped shape having a plurality of steps (described in detail later), a curved surface shape.

[0040] According to the present embodiment, the terminal components 80 are fitted to the fitting recess 50 by the fitting configuration (one or a plurality of protrusions 55). More specifically, the terminal components 80 are sandwiched by the protrusions 55 and the first planar portions, and further, the protrusions 55 are flattened in a state of pressing the terminal components 80 toward the first planar portions.

[0041] Thus, it is possible to easily and stably fix the terminal components 80 to the base portion 30 without using an adhesive or the like. Therefore, it is possible to realize the coil component 100 of a configuration excellent in manufacturing easiness.

[0042] Hereinafter, the coil component 100 of the present embodiment will be described in more detail.

[0043] In addition, in the following description, the upward and downward directions will be referred to as the Z direction. The lower (lower side) is a direction in which the terminal components 80 (described later) are disposed. Figure 1The side of the coil member 100 on which the mounting surface is provided, i.e., the side of the mounting surface of the coil member 100. However, the positional relationship of each part at the time of manufacture and use of the coil member 100 (particularly, the positional relationship in the up-down direction) is not limited to the positional relationship described in this specification.

[0044] The axial direction of the coil 90 extends in a direction perpendicular to the Z direction. The axial direction of the coil 90 is referred to as the Y direction, one side in the Y direction is referred to as the front (front direction), and the other side is referred to as the rear (rear direction).

[0045] In addition, the direction perpendicular to both the Y direction and the Z direction is referred to as the X direction, one side in the X direction is referred to as the right (right direction), and the other side is referred to as the left (left direction).

[0046] The directions are indicated in each drawing.

[0047] In addition, in the Y direction, the side on which the central position in the axial direction of the coil 90 is located is referred to as the inner side (inner direction), and the side opposite the inner side is referred to as the outer side (outer direction). In addition, in the X direction, the side on which the connection portion 70 is located is referred to as the inner side (inner direction), and the side opposite the inner side is referred to as the outer side (outer direction).

[0048] In addition, 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.

[0049] As shown in FIG. 1, for example, the magnetic core 10 is formed in a ring shape, and is configured to be divided into a plurality of divided cores 11 in the circumferential direction. Figure 1 Figure 2 As shown in FIG. 1, for example, the magnetic core 10 is formed in a ring shape, and is configured to be divided into a plurality of divided cores 11 in the circumferential direction.

[0050] As shown in FIG. 1, for example, the magnetic core 10 is formed in a ring shape, and is configured to be divided into a plurality of divided cores 11 in the circumferential direction. Figure 2 As shown in FIG. 1, for example, the magnetic core 10 is formed in a ring shape, and is configured to be divided into a plurality of divided cores 11 in the circumferential direction. Figure 3 Figure 4 As shown in FIG. 1, for example, the magnetic core 10 is formed in a ring shape, and is configured to be divided into a plurality of divided cores 11 in the circumferential direction.

[0051] As shown in FIG. 1, for example, the magnetic core 10 is formed in a ring shape, and is configured to be divided into a plurality of divided cores 11 in the circumferential direction.

[0052] As shown in FIG. 1, for example, the magnetic core 10 is formed in a ring shape, and is configured to be divided into a plurality of divided cores 11 in the circumferential direction.

[0053] ​​The first magnetic core 11a has a base 12 extending in the front-rear direction and a pair of legs 13 protruding to the right from both ends of the base 12.

[0054] The base 12 is formed, for example, into a generally prismatic shape with elongated front and rear sides. Similarly, each outer leg 13 is formed, for example, into a generally prismatic shape with elongated left and right sides. In the base 12 and each outer leg 13, two of the four surfaces arranged around the axis are the upper and lower surfaces arranged generally horizontally, and one of the remaining two surfaces (hereinafter, the inner surface) faces the side of the second magnetic core 11b, and the other surface (hereinafter, the outer surface) faces the opposite side of the second magnetic core 11b.

[0055] The second magnetic core 11b has the same base 12 and a pair of legs 13 as the first magnetic core 11a. However, in the case of the second magnetic core 11b, the pair of legs 13 protrude to the left from both ends of the base 12.

[0056] Here, in the magnetic core 10, the surface on the base portion 30 side (the lower surface in this embodiment) is substantially entirely a first convex curved surface 14 protruding toward the base portion 30, and the surface on the cover portion 60 side (the upper surface in this embodiment) is substantially entirely a second convex curved surface 15 protruding toward the cover portion 60. That is, the lower and upper surfaces of the magnetic core 10 are each rounded.

[0057] Based on this structure, compared to the case where the upper and lower surfaces of the magnetic core 10 are flat surfaces, the winding 93 of the coil 90 can be arranged in a shape closer to a cylinder along the first convex surface 14 and the second convex surface 15 (see reference). Figure 2 The winding 93 (etc.) is wound around the magnetic core 10. Therefore, it is possible to wind the winding 93 around the magnetic core 10 while suppressing the stress applied to the winding 90.

[0058] More specifically, in this embodiment, the first convex surface 14 of the magnetic core 10 is formed by the lower surface of the base 12 and the lower surface of each outer leg 13. Furthermore, the second convex surface 15 of the magnetic core 10 is formed by the upper surface of the base 12 and the upper surface of each outer leg 13.

[0059] In addition, such as Figure 10 As shown in (a), in this embodiment, the lower surface of the base 12 and the lower surface of each outer leg 13 are formed continuously to each other, and the assembly of the lower surface of the base 12 and the lower surface of each outer leg 13 constitutes a convex curved surface (first convex curved surface 14) that is smoothly convex downward.

[0060] Similarly, the upper surface of the base 12 and the upper surface of each outer leg 13 are formed continuously to each other, and the assembly of the upper surface of the base 12 and the upper surface of each outer leg 13 constitutes a convex curved surface (second convex curved surface 15) that is smoothly convex upward.

[0061] Furthermore, the front end faces of the outer legs 13 of the first magnetic core 11a and the second magnetic core 11b are formed in a flat direction and become vertical surfaces perpendicular to the axis of the coil 90.

[0062] like Figure 3 As shown, the inner and outer surfaces of the base 12 are also formed flat and become vertical planes perpendicular to the axis of the coil 90. The inner surface of the base 12 of the first magnetic core 11a is opposite to the inner surface of the base 12 of the second magnetic core 11b, and the outer surface of the base 12 of the first magnetic core 11a is opposite to the outer surface of the base 12 of the second magnetic core 11b.

[0063] In this embodiment, a coil 90 is wound around the middle portion (middle portion in the extending direction) of the base 12 of each of the first magnetic core 11a and the second magnetic core 11b. On the other hand, the front end of the base 12 protrudes forward from the coil 90, and the rear end of the base 12 protrudes rearward from the coil 90. Moreover, the coil 90 is not wound around the outer leg portion 13 of each of the first magnetic core 11a and the second magnetic core 11b.

[0064] However, in this embodiment, as described above, in the magnetic core 10, the entire lower surface becomes a first convex curved surface 14 protruding downwards, and the entire upper surface becomes a second convex curved surface 15 protruding upwards.

[0065] Therefore, in the magnetic core 10, the portion constituting the first part with the coil 90 wound around it is not limited to this example; for example, it may also be wound around the outer leg 13.

[0066] More specifically, such as Figure 1 and Figure 2 As shown, in this embodiment, the coil 90 includes a first coil 91 wound on the first magnetic core 11a and a second coil 92 wound on the second magnetic core 11b.

[0067] The first coil 91 and the second coil 92 are each composed of windings 93. The windings 93 of the first coil 91 and the second coil 92 are wound around the base 12 of the corresponding segmented iron core 11 (the first magnetic iron core 11a and the second magnetic iron core 11b). The windings 93 wound around the base 12 constitute a winding portion 94 (see reference). Figure 2). The both ends of each winding 93 are electrically connected to the corresponding terminal member 80, respectively. As an example, the both ends of each winding 93 are drawn from the winding portion 94 and fixed to the corresponding terminal member 80, respectively, thereby being electrically connected to the terminal member 80 (see FIG. 2). Figure 1 ). In addition, in Figures 2 to 5 , the portions of the winding 93 drawn from the winding portion 94 (drawn wires 95), the end portions of the winding 93 are omitted from the illustration.

[0068] As shown in Figure 1 , in the case of the present embodiment, the main body member 20 integrally has, in addition to the base portion 30, a cover portion 60 covering the magnetic core 10 and a connecting portion 70 connecting the base portion 30 and the cover portion 60 to each other.

[0069] As shown in Figure 1 , Figure 5 , and Figure 6 , in the case of the present embodiment, the base portion 30 and the cover portion 60 each have mutually opposed opposing surfaces 31, 61.

[0070] The connecting portion 70 is interposed between the opposing surfaces 31, 61 of the base portion 30 and the cover portion 60, respectively, and connects the opposing surfaces 31, 61 to each other.

[0071] Further, the first magnetic core 11a and the second magnetic core 11b are arranged on the opposing surface 31 of the base portion 30.

[0072] According to such a structure, it is possible to stably hold the plurality of divided cores 11 (magnetic core 10) between the base portion 30 and the cover portion 60.

[0073] In the case of the present embodiment, the opposing direction of the base portion 30 and the cover portion 60 is the vertical direction, and with the magnetic core 10 as a reference, the base portion 30 is arranged on the lower side and the cover portion 60 is arranged on the upper side. Therefore, the opposing surface 31 of the base portion 30 is the upper surface of the base portion 30, and the opposing surface 61 of the cover portion 60 is the lower surface of the cover portion 60.

[0074] However, in the present application, the opposing direction of the base portion 30 and the cover portion 60 is not limited to the above-described example, and can be appropriately set according to the configuration of each member constituting the coil member 100, the positional relationship of each member to be achieved, and the like.

[0075] As shown in Figure 2 , Figure 3 , and Figure 5As shown, the cover portion 60 is formed, for example, in a flat plate shape, and has a main body portion 62 arranged horizontally. Also, a positioning protrusion portion 66 to be described later is formed in the main body portion 62. In the case of the present embodiment, an opposing surface 61 (lower surface of the cover portion 60) opposing the opposing surface 31 of the base portion 30 is constituted by a lower surface of the main body portion 62 and a lower surface 67 of the positioning protrusion portion 66. Also, the opposing surface 61 is arranged horizontally.

[0076] As shown, the main body portion 62 has, for example, a substantially rectangular shape in plan view. A notched portion 63 is formed in a portion of the right rear side of the main body portion 62. By the notched portion 63, the orientation of the cover portion 60, and further the orientation of the main body member 20, can be easily determined. Figure 3

[0077] By the main body member 20 having the cover portion 60, when the coil member 100 is mounted to the substrate, the cover portion 60 can be sucked by a mounter, and the work of mounting the coil member 100 to the substrate can be easily performed. Note that the cover portion 60 may, for example, not be formed flat.

[0078] As shown in Figs. 1, 2, and 3, the base portion 30 has, for example, a core arrangement portion 40 in which the magnetic core 10 is arranged. Figure 2 Figure 6 Figure 8 More specifically, the base portion 30 has, for example, a pair of core arrangement portions 40, namely a first core arrangement portion 42 arranged on the front side and a second core arrangement portion 44 arranged on the rear side, as the core arrangement portion 40. As shown in Figs. 1, 2, and 3, by the first core arrangement portion 42 and the second core arrangement portion 44, the first magnetic core 11a and the first magnetic core 11a are held in a state arranged in a substantially rectangular ring shape in plan view. Figure 1

[0079] Also, the base portion 30 has a plate-shaped portion 35 connecting the first core arrangement portion 42 and the second core arrangement portion 44 to each other.

[0080] In the case of the present embodiment, an upper surface of the opposing surface 31 (the base portion 30) opposing the opposing surface 61 of the cover portion 60 is constituted by an upper surface of each of the first core arrangement portion 42 and the second core arrangement portion 44 and an upper surface of the plate-shaped portion 35.

[0081] The plate-shaped portion 35 is formed in a flat plate shape, and is arranged horizontally. The plate-shaped portion 35 has, for example, a substantially rectangular shape in plan view.

[0082] The front edge portion of the plate-shaped portion 35 is connected to the first core arrangement portion 42, and the rear edge portion of the plate-shaped portion 35 is connected to the second core arrangement portion 44. Also, the lower surface of the plate-shaped portion 35 is arranged so as to be flush with the lower surface of each of the first core arrangement portion 42 and the second core arrangement portion 44.​​​​

[0083] The first core configuration section 42 and the second core configuration section 44 are formed to have approximately the same shape and size as each other, and are arranged symmetrically front to back.

[0084] More specifically, such as Figure 5 , Figure 7 as well as Figure 8 As shown, the first core arrangement section 42 and the second core arrangement section 44 are respectively formed into a generally prismatic shape, for example, a left-right elongated strip. However, as... Figure 1 and Figure 3 As shown, in this embodiment, protrusions 45 extending outward are formed at both ends of the second core arrangement portion 44. Figure 1 As shown, the lead wire 95 that is drawn from the coil 90 can be locked to the protrusion 45.

[0085] Multiple terminal components 80 are provided in the first core configuration section 42 and the second core configuration section 44 (details to be described later).

[0086] like Figure 3 As shown in the figure, in this embodiment, the outer leg 13 on the front side of the first magnetic core 11a and the outer leg 13 on the front side of the second magnetic core 11b are respectively disposed on the middle part (middle part in the extending direction) of the first core arrangement part 42.

[0087] Similarly, the rear outer leg portion 13 of the first magnetic core 11a and the rear outer leg portion 13 of the second magnetic core 11b are respectively disposed on the middle part (as above) of the second core arrangement portion 44.

[0088] In addition, such as Figure 3 As shown, the bases 12 of the first magnetic core 11a and the second magnetic core 11b are arranged across the space between the first core arrangement portion 42 and the second core arrangement portion 44.

[0089] More specifically, in the base 12 of the first magnetic core 11a, the front end protruding forward from the coil 90 is disposed on the left end of the first core mounting portion 42, and the rear end protruding backward from the coil 90 is disposed on the left end of the second core mounting portion 44.

[0090] Similarly, in the base 12 of the second magnetic core 11b, the front end protruding forward from the coil 90 is disposed on the right end of the first core configuration portion 42, and the rear end protruding backward from the coil 90 is disposed on the right end of the second core configuration portion 44.

[0091] like Figure 3 , Figure 7 as well as Figure 8As shown in FIG. 1, the connecting portion 70 connects the central portion of the base portion 30 and the central portion of the cover portion 60 to each other, for example.

[0092] More specifically, in the present embodiment, the connecting portion 70 is formed in a flat plate shape and is arranged with its plate surface facing in the left-right direction. The upper end surface of the connecting portion 70 is connected to the central portion of the lower surface of the main body portion 62 of the cover portion 60, and the lower end surface of the connecting portion 70 is connected to the central portion of the upper surface of the plate-shaped portion 35 of the base portion 30. In this way, the connecting portion 70 connects the base portion 30 and the cover portion 60 to each other in a state in which the base portion 30 and the cover portion 60 face each other in the up-down direction. Also, the upper surface of the plate-shaped portion 35 and the lower surface of the main body portion 62 of the cover portion 60 are arranged in parallel to each other in the up-down direction.

[0093] In the present embodiment, the entire body of each of the first magnetic core 11a and the second magnetic core 11b is integrally formed of a magnetic material.

[0094] The main body member 20 (the base portion 30, the cover portion 60, and the connecting portion 70) is integrally formed of an insulating material such as resin, for example, as a whole.

[0095] As shown in FIG. 1, in the present embodiment, the front end surface of the front outer leg portion 13 of the first magnetic core 11a and the front end surface of the front outer leg portion 13 of the second magnetic core 11b are in surface contact with each other in abutment. Similarly, the front end surface of the rear outer leg portion 13 of the first magnetic core 11a and the front end surface of the rear outer leg portion 13 of the second magnetic core 11b are in surface contact with each other in abutment. Figure 3

[0096] In the present embodiment, the front end surface of the front outer leg portion 13 of the first magnetic core 11a and the front end surface of the front outer leg portion 13 of the second magnetic core 11b are fixed to each other by an adhesive, for example. Similarly, the front end surface of the rear outer leg portion 13 of the first magnetic core 11a and the front end surface of the rear outer leg portion 13 of the second magnetic core 11b are fixed to each other by an adhesive.

[0097] In this way, the first magnetic core 11a and the second magnetic core 11b are integrally connected to each other, and constitute the annular magnetic core 10 in plan view. Also, the annular magnetic core 10 is held by the main body member 20 in a state in which it is inserted into the connecting portion 70.

[0098] As shown in FIG. 1, in the present embodiment, the entire body of the magnetic core 10 is housed inside the outline of the base portion 30 when viewed in the direction in which the base portion 30 and the cover portion 60 face each other. Figure 4

[0099] ​​Furthermore, the phrase "the entire magnetic core 10 is housed inside the outline of the base portion 30" means that, when viewed from above, the outline of the magnetic core 10 does not extend outward beyond the outline of the base portion 30, and the outline of the magnetic core 10 may, for example, overlap with the outline of the base portion 30.

[0100] With this structure, when mounting the coil component 100 onto the substrate, it can be ensured that the coil component 100 can be easily mounted onto the substrate via the adsorption cover 60 of the mounting machine.

[0101] like Figure 3 As shown, when viewed along the opposing direction of the base portion 30 and the cover portion 60, the entire magnetic core 10 is housed inside the outer contour of the cover portion 60.

[0102] Furthermore, the phrase "the entire magnetic core 10 is housed inside the outer contour of the cover 60" means that, when viewed from above, the outer contour of the magnetic core 10 does not extend outward beyond the outer contour of the cover 60, and the outer contour of the magnetic core 10 may, for example, overlap with the outer contour of the cover 60.

[0103] With this structure, the base portion 30 can provide good support from below for each of the multiple segmented iron cores 11, that is, the entire magnetic iron core 10.

[0104] like Figure 1 , Figure 5 as well as Figure 6 As shown, the cover 60 also has a positioning protrusion 66 for positioning the magnetic core 10.

[0105] The positioning protrusion 66 extends from the opposite surface 61 of the cover 60 toward the magnetic core 10, restricting the magnetic core 10 from approaching the cover 60 in the opposite direction between the base 30 and the cover 60.

[0106] Therefore, the height position of the magnetic core 10 relative to the main body component 20 can be easily positioned in the vertical direction. In addition, the swaying of the magnetic core 10 in the vertical direction can be effectively suppressed.

[0107] Furthermore, in this embodiment, such as Figure 6 and Figure 11 As shown in (b), a recess 46 is formed on a portion of the opposing surface 31 of the base portion 30 (in this embodiment, the upper surface of the core arrangement portion 40), which is recessed toward the side opposite to the magnetic core 10 side, and the first convex curved surface 14 of the magnetic core 10 is disposed in the recess 46.

[0108] Therefore, the magnetic core 10 can be structured with a first convex curved surface 14, and the magnetic core 10 can be well held by the base portion 30.

[0109] Furthermore, the recess 46 includes a concave curved surface 47 recessed toward the side opposite to the magnetic core 10, and the concave curved surface 47 contacts the first convex curved surface 14 of the magnetic core 10. That is, the first convex curved surface 14 engages with the concave curved surface 47.

[0110] Therefore, the magnetic core 10 can be easily positioned relative to the base portion 30. Furthermore, it is possible to suppress any relative displacement of the magnetic core 10 relative to the base portion 30.

[0111] Furthermore, in this invention, it is sufficient that at least a portion of the first convex curved surface 14 contacts the concave curved surface 47. That is, it is sufficient that at least a portion of the first convex curved surface 14 engages with the concave curved surface 47.

[0112] like Figure 1 , Figure 3 , Figure 5 as well as Figure 6 As shown, in this embodiment, the upper surface of the core configuration section 40 (the first core configuration section 42 and the second core configuration section 44) becomes a recess 46 or even a concave curved surface 47.

[0113] More specifically, such as Figure 7 and Figure 8 As shown, in the core configuration section 40, the upper surfaces of the left end and the right end are respectively concave surfaces corresponding to the first convex surface 14 of the base 12 of the magnetic core 10, and the upper surface of the middle part (the part between the left end and the right end) is a concave surface corresponding to the first convex surface 14 of the outer leg 13.

[0114] More specifically, the upper surfaces of the left and right ends of the core configuration section 40 (the first core configuration section 42 and the second core configuration section 44) Figure 9 Based on the imaginary line 201 shown, the outer portion 49a forms part of the concave curved surface 47. Furthermore, the imaginary line 201 referred to here is a straight line that bisects the core configuration portion 40 in the extending direction (left-right direction) when viewed from above.

[0115] When viewed along the extending direction (left-right direction) of the core configuration section 40, as Figure 10 (a) and Figure 10As shown in (b), the outer portion 49a is a concave curved surface that is inclined downward toward the middle position of the upper surface of the core arrangement portion 40 (the position of the imaginary line 201) from a position slightly inward of the outer edge of the outer portion 49a. In addition, the outer edge portion of the outer portion 49a is formed slightly flat.

[0116] On the other hand, in the upper surface of each of the left end portion and the right end portion of the core arrangement portion 40, the inner portion 49b is formed substantially flat with reference to the imaginary line 201, and is arranged horizontally.

[0117] On the other hand, the upper surface of the middle portion of the core arrangement portion 40 (the first core arrangement portion 42 and the second core arrangement portion 44) constitutes a part of the concave curved surface 47 as a whole.

[0118] More specifically, in the upper surface of the middle portion of the core arrangement portion 40, both the outer portion 49a and the inner portion 49b with reference to the above imaginary line 201 are concave curved surfaces.

[0119] More specifically, in the middle portion of the core arrangement portion 40, the inner portion with reference to the imaginary line 201 constitutes a raised portion 48 (see Figure 10 (a) and Figure 10 (b)) that is gradually raised toward the inner side and the upper side. When viewed in the extension direction (the left-right direction) of the core arrangement portion 40, the upper surface of the raised portion 48 is a concave curved surface that is inclined upward toward the inner direction from the middle position of the upper surface of the core arrangement portion 40 (the position of the imaginary line 201). Furthermore, the upper surface of the raised portion 48 (the inner portion 49b) and the outer portion 49a of the upper surface of the core arrangement portion 40 constitute a concave curved surface 47 that is recessed toward the lower side.

[0120] In the case of the present embodiment, the first convex curved surface 14 of the outer leg portion 13 of the front side of each of the first magnetic core 11a and the second magnetic core 11b is in surface contact with the upper surface of the middle portion of such a first core arrangement portion 42. Similarly, the first convex curved surface 14 of the outer leg portion 13 of the rear side of each of the first magnetic core 11a and the second magnetic core 11b is in surface contact with the upper surface of the middle portion of such a second core arrangement portion 44.

[0121] According to such a structure, it is possible to arrange the magnetic core 10 in the core arrangement portion 40 in such a manner that both the first convex curved surface 14 of the base portion 12 and the first convex curved surface 14 of the outer leg portion 13 are in surface contact with the upper surface (the concave curved surface 47) of the core arrangement portion 40.

[0122] In addition, as described above, the cover portion 60 also has the positioning protrusion portion 66 that positions the magnetic core 10. In the case of the present embodiment, as Figure 5 andFigure 8 As shown, the cover 60 has a pair of front and rear positioning protrusions 66 as positioning protrusions 66.

[0123] The front and rear positioning protrusions 66 are, for example, set to have the same shape and size as each other, and are arranged symmetrically to each other.

[0124] The front positioning protrusion 66 extends downward from the lower surface of the front end of the main body 62 of the cover 60, for example. Similarly, the rear positioning protrusion 66 extends downward from the lower surface of the rear end of the main body 62 of the cover 60, for example.

[0125] like Figure 6 As shown, the front positioning protrusion 66 is disposed above the boundary between the front outer leg 13 of the first magnetic core 11a and the front outer leg 13 of the second magnetic core 11b. Furthermore, a small gap is formed between the lower surface 67 of the front positioning protrusion 66 and the upper surfaces of the front outer leg 13 of both the first and second magnetic cores 11b.

[0126] Similarly, the rear positioning protrusion 66 is disposed above the boundary between the rear outer leg 13 of the first magnetic core 11a and the rear outer leg 13 of the second magnetic core 11b. Moreover, a small gap is formed between the lower surface 67 of the rear positioning protrusion 66 and the upper surfaces of the rear outer leg 13 of the first magnetic core 11a and the rear outer leg 13 of the second magnetic core 11b, respectively.

[0127] With this structure, the first magnetic core 11a and the second magnetic core 11b can be easily positioned relative to the main body component 20 in the vertical direction. Furthermore, it can suppress the wobbling of both the first magnetic core 11a and the second magnetic core 11b in the vertical direction.

[0128] As described above, the coil component 100 has a plurality of (e.g., four) terminal components 80 that are electrically connected to the coil 90.

[0129] In this embodiment, the multiple terminal components 80 are formed to have the same shape and the same size as each other.

[0130] like Figure 6 and Figure 11 As shown in (b), each terminal component 80 is constructed, for example, by bending a long strip of plate-shaped metal component into a generally Z-shape. More specifically, the terminal components 80 (first terminal component 81 and second terminal component 82) have L-shaped portions, which include an upright plate portion 87 that rises relative to the mounting surface that engages with the terminal component 80 and a horizontal plate portion that extends generally horizontally from the upright plate portion 87.

[0131] The terminal member 80 is bent in two stages in its length direction, for example, and one end portion and the other end portion thereof are arranged horizontally opposite to each other in the up-down direction, and on the other hand, the intermediate portion (the intermediate portion in the length direction) between the one end portion and the other end portion is arranged vertically to constitute the standing plate portion 87 described above. In addition, in the terminal member 80, the one end portion projects inward and is arranged on the lower side with the standing plate portion 87 as a reference, and the other end portion projects outward and is arranged on the upper side. Also, in the terminal member 80, one of the one end portion and the other end portion is the external terminal 85 that is externally connected when the coil member 100 is mounted, and is the horizontal plate portion described above, and the other end portion is the internal terminal 86 that is connected to the winding 93 of the coil 90.

[0132] As shown in Figure 4 , the external terminal 85 is formed in a substantially rectangular shape long in the left-right direction in plan view. Similarly, as shown in Figure 10 (b), the shape of the standing plate portion 87 viewed in the left-right direction is formed in a substantially rectangular shape long in the up-down direction. In addition, the plate surfaces of the standing plate portion 87 are arranged respectively facing the left-right direction, and the plate surfaces of the horizontal plate portion are arranged respectively facing the up-down direction. That is, the terminal member 80 includes two main surfaces (the standing plate portion 87 and the horizontal plate portion (the external terminal 85)) perpendicular to each other in the surface normal direction and a pair of side end surfaces 80a perpendicular to the surface normal direction of each of the two main surfaces. Also, the pair of side end surfaces 80a are formed flat, and the plate surfaces thereof are arranged parallel to each other facing the front-rear direction.

[0133] On the other hand, the internal terminal 86 is formed in a bifurcated shape open toward the front end side (the outer side). As an example, the end portion of the lead-out wire 95 (the winding 93 of the winding 93) led out from the winding portion 94 of the coil 90 is fixed to the internal terminal 86 by resistance welding in a state of being sandwiched by the bifurcated shape portion of the internal terminal 86. However, in the present application, the method of fixing the winding 93 to the internal terminal 86 is not limited to this example, and for example, it can be fixed by lacing or welding.

[0134] As described above, the fitting recess portion 50 is formed in the base portion 30. The fitting recess portion 50 includes a pair of first surface portions (a pair of front and rear first side surface portions 53) opposite to each other. One or a plurality of protrusions 55 are formed in at least one of the pair of first surface portions, and the terminal member 80 is fitted with the fitting recess portion 50 by the protrusion 55.

[0135] According to such a structure, the terminal member 80 can be easily and stably fixed to the base portion 30 without using an adhesive or the like. In addition, the structure in which the terminal member 80 is indirectly fixed to the magnetic core 10 via the base portion 30 is adopted, and thus the structural strength of the magnetic core 10 can be favorably ensured as compared with the case in which the terminal member 80 is directly fixed to the magnetic core 10.

[0136] In the case of the present embodiment, as described later, each of the pair of first flat portions (the pair of front and rear first side portions 53) is formed entirely flat. In addition, the plate surfaces of the pair of first flat portions face the front and rear directions and are arranged in parallel to each other.

[0137] In addition, the one or more protrusions 55 protrude, for example, in the direction in which the pair of first flat portions face each other, that is, the front and rear directions.

[0138] Furthermore, the protrusion 55, for example, abuts against one of the pair of side end surfaces 80a of the terminal member 80 described above and is flattened between the one side end surface 80a and the one first flat portion. In more detail, the protrusion 55 does not press the two major surfaces (the standing plate portion 87 and the horizontal plate portion (the outer terminal 85)) of the terminal member 80 described above, but presses the one of the pair of side end surfaces 80a toward the other first flat portion and further presses the other side end surface 80a.

[0139] According to such a structure, the protrusion 55 presses the one side end surface 80a toward the inner side (the terminal member 80 side), and thus the load from the protrusion 55 is applied to the terminal member 80 in the in-plane direction of the major surface of the terminal member 80. Therefore, the deformation of the terminal member 80 due to the load from the protrusion 55 can be suppressed. Thus, as compared with the case in which the protrusion 55 presses the major surface (the standing plate portion 87 or the horizontal plate portion) of the terminal member 80 in the direction perpendicular to the surface, the terminal member 80 can be more firmly fitted into the fitting recess 50.

[0140] In addition, as described above, the plate surfaces of the pair of side end surfaces 80a are arranged in parallel to each other in the front and rear directions, and the protrusion 55 protrudes in the front and rear directions, that is, in the direction perpendicular to the surface of the side end surface 80a.

[0141] According to such a structure, the terminal member 80 can be favorably pressed by the protrusion 55 in the direction in which the pair of side end surfaces 80a face each other (the front and rear directions), and thus the lateral force in the direction intersecting the direction (for example, the up and down directions) can be suppressed, so that the terminal member 80 can be stably fixed to the fitting recess 50.

[0142] Also, in the case of the present embodiment, the protrusion 55 is tapered toward the protruding direction of the protrusion 55 in the state before the terminal member 80 is fitted into the fitting recess 50. More specifically, the protrusion 55 is formed in a substantially triangular shape tapered toward the protruding direction in a cross section (refer to Fig. 9(a)) perpendicular to the extending direction of the protrusion 55. Figure 12

[0143] According to such a structure, the tip end of the protrusion 55 (tip end in the protruding direction) can be easily crushed, and the amount of crushing of the protrusion 55 can reach the limit as the fitting force of the terminal member 80 with respect to the fitting recess 50 becomes large. Therefore, the desired amount of crushing of the protrusion 55 can be obtained according to the play of the fitting of the terminal member 80 with respect to the fitting recess 50.

[0144] In addition, in the present embodiment, the pair of first flat portions (and the pair of second flat portions described later) are not limited to the flat portions formed flat as described above, and for example, can be flat portions formed in a stepped shape having a plurality of steps, or a curved shape.

[0145] More specifically, the first flat portion (the second flat portion) can also be formed in a stepped shape including a plurality of faces arranged toward different directions from each other. However, in this case, it is preferable that the pair of flat portions (the second flat portion) include at least one pair of opposing faces facing each other, on which the protrusion 55 is formed.

[0146] In addition, the first flat portion (the second flat portion) can be a curved surface curved convexly toward the terminal member 80 side, can be a curved surface curved concavely toward the side opposite to the terminal member 80 side, or can include both of the curved surface curved convexly toward the terminal member 80 side and the curved surface curved concavely toward the side opposite to the terminal member 80 side.

[0147] In the case of the present embodiment, as shown in Fig. 9, the base portion 30 has a pair of left and right first fitting recesses 51 formed in the first core arrangement portion 42 and a pair of left and right second fitting recesses 52 formed in the second core arrangement portion 44 as the fitting recesses 50. Figure 8

[0148] In the case of the present embodiment, the pair of left and right first fitting recesses 51 are formed in the same shape and the same size as each other, and are arranged left and right symmetrically. Similarly, the pair of left and right second fitting recesses 52 are formed in the same shape and the same size as each other, and are arranged left and right symmetrically. In addition, the first fitting recess 51 and the second fitting recess 52 are formed in the same shape and the same size as each other.

[0149] ​​Moreover, two of the four terminal members 80 of the coil member 100 (hereinafter, referred to as first terminal members 81) are respectively fitted with the first fitting recesses 51, and the remaining two terminal members 80 (hereinafter, referred to as second terminal members 82) are respectively fitted with the second fitting recesses 52.

[0150] Each of the first terminal members 81 is arranged in the first core arrangement portion 42 so as to be left-right symmetrical to each other. Likewise, each of the second terminal members 82 is arranged in the second core arrangement portion 44 so as to be left-right symmetrical to each other.

[0151] As shown in (a) of FIG. 1 and (a) of FIG. 2, in the case of the present embodiment, the fitting recess 50 (each of the first fitting recess 51 and the second fitting recess 52) is formed in a shape that is recessed in two stages in the depth direction of the fitting recess 50. Figure 10 Figure 11 As shown in (a) of FIG. 1 and (a) of FIG. 2, in the case of the present embodiment, the fitting recess 50 (each of the first fitting recess 51 and the second fitting recess 52) is formed in a shape that is recessed in two stages in the depth direction of the fitting recess 50.

[0152] The fitting recess 50 includes a pair of first side surface portions 53 that constitute a part of the recess of the front end side (the side opposite to the depth direction of the fitting recess 50) of the fitting recess 50, and a pair of second side surface portions 54 that constitute a part of the recess of the base end side (the depth direction side of the fitting recess 50) of the fitting recess 50.

[0153] In the case of the present embodiment, the pair of first side surface portions 53 constitutes a pair of first planar portions in which the protrusions 55 (more specifically, the first protrusions 56 described later) are formed, and the pair of second side surface portions 54 constitutes a pair of second planar portions in which the second protrusions 57 described later are formed. Moreover, as shown in (b) of FIG. 1 and (b) of FIG. 2, the standing plate portion 87 of the terminal member 80 is arranged between the pair of first side surface portions 53, is pressed by the first protrusions 56, and is sandwiched by the pair of first side surface portions 53. In addition, the external terminal 85 of the terminal member 80 is arranged between the pair of second side surface portions 54, and is sandwiched by the pair of second side surface portions 54. Figure 10 Figure 11 In the case of the present embodiment, the pair of first side surface portions 53 constitutes a pair of first planar portions in which the protrusions 55 (more specifically, the first protrusions 56 described later) are formed, and the pair of second side surface portions 54 constitutes a pair of second planar portions in which the second protrusions 57 described later are formed. Moreover, as shown in (b) of FIG. 1 and (b) of FIG. 2, the standing plate portion 87 of the terminal member 80 is arranged between the pair of first side surface portions 53, is pressed by the first protrusions 56, and is sandwiched by the pair of first side surface portions 53. In addition, the external terminal 85 of the terminal member 80 is arranged between the pair of second side surface portions 54, and is sandwiched by the pair of second side surface portions 54.

[0154] The pair of first side surface portions 53 is opposed to each other in the front-rear direction in parallel with each other. Likewise, the pair of second side surface portions 54 is opposed to each other in the front-rear direction in parallel with each other. Therefore, in the case of the present embodiment, the facing direction of each of the pair of first planar portions and the pair of second planar portions is the front-rear direction, the terminal member 80 is pressed by the protrusions 55 in the front-rear direction, and is sandwiched by the pair of first planar portions and the pair of second planar portions, respectively.

[0155] ​​In the case of the present embodiment, the entire body of each of the front and rear pair of first side surface portions 53 (pair of first surface portions) is formed flat, and the plate surface thereof is disposed facing the front and rear direction. In addition, when viewed in the front and rear direction, the front and rear pair of first side surface portions 53 are each formed in a substantially rectangular shape elongated in the up and down direction.

[0156] In addition, the front and rear pair of second side surface portions 54 (pair of second surface portions) are each, for example, formed flat, and the plate surface thereof is disposed facing the front and rear direction. In addition, when viewed in the front and rear direction, the front and rear pair of second side surface portions 54 are each formed in a substantially rectangular shape elongated in the left and right direction.

[0157] The front side first side surface portion 53 and the front side second side surface portion 54 are disposed so as to be flush with each other. Likewise, the rear side first side surface portion 53 and the rear side second side surface portion 54 are disposed so as to be flush with each other.

[0158] More specifically, as shown in (a) and the like of FIG. 6, the left side first fitting recess portion 51 is recessed in two stages from the left end surface of the first core disposing portion 42 toward the inner side (right side). Also, the left side first fitting recess portion 51 is open toward both the left side and the lower side. Figure 4 Figure 11 As shown in (a) of FIG. 6 and (a) of FIG. 7, the left side first fitting recess portion 51 has, in addition to the pair of first side surface portions 53 and the pair of second side surface portions 54, respectively, a first top surface portion 59a and a second top surface portion 59b that are disposed horizontally, and a first bottom surface portion 58a and a second bottom surface portion 58b that are disposed vertically, respectively.

[0159] As shown in (a) of FIG. 6 and (a) of FIG. 7, the left side first fitting recess portion 51 has, in addition to the pair of first side surface portions 53 and the pair of second side surface portions 54, respectively, a first top surface portion 59a and a second top surface portion 59b that are disposed horizontally, and a first bottom surface portion 58a and a second bottom surface portion 58b that are disposed vertically, respectively. Figure 10 Figure 11 The first top surface portion 59a and the second top surface portion 59b are each formed flat, and the plate surface thereof is disposed facing the up and down direction.

[0160] The second top surface portion 59b is disposed at a position that is more inward (rightward) and lower than the first top surface portion 59a. The first bottom surface portion 58a is disposed between the first top surface portion 59a and the second top surface portion 59b in the up and down direction. The second bottom surface portion 58b extends downward from the inner end (right end) of the second top surface portion 59b.

[0161] In this way, in the left side first fitting recess portion 51, the first top surface portion 59a, the first bottom surface portion 58a, the second top surface portion 59b, and the second bottom surface portion 58b are disposed in this order from the left side, forming a stepped portion having a plurality of steps.

[0162] The first top surface portion 59a and the second top surface portion 59b are each formed flat, and the plate surface thereof is disposed facing the up and down direction.

[0163] The first bottom surface portion 58a and the second bottom surface portion 58b are each formed flat, and the plate surface thereof is disposed facing the left and right direction (the depth direction of the fitting recess portion 50). ​​

[0164] The front and rear pair of first side surface portions 53 sandwich the first top surface portion 59a and the first bottom surface portion 58a therebetween and oppose each other.

[0165] Likewise, the front and rear pair of second side surface portions 54 sandwich the second top surface portion 59b and the second bottom surface portion 58b therebetween and oppose each other.

[0166] As shown in (a) of FIG. 10, the assembly of the front first side surface portion 53 and the front second side surface portion 54, when viewed in the front-rear direction, for example, becomes a substantially L-letter shape corresponding to the terminal member 80. Figure 11

[0167] More specifically, the lower end portion of the front first side surface portion 53 is connected to the left end portion of the front second side surface portion 54.

[0168] Likewise, the assembly of the rear first side surface portion 53 and the rear second side surface portion 54, when viewed in the front-rear direction, for example, becomes a substantially L-letter shape corresponding to the terminal member 80.

[0169] More specifically, the lower end portion of the rear first side surface portion 53 is connected to the left end portion of the rear second side surface portion 54.

[0170] The right first fitting recess 51 is formed in left-right symmetry with the left first fitting recess 51. Therefore, the right first fitting recess 51 is recessed in two stages toward the inner side (left side) from the right end surface of the first core arrangement portion 42. Further, the right first fitting recess 51 has, for example, the first top surface portion 59a and the second top surface portion 59b arranged horizontally respectively and the first bottom surface portion 58a and the second bottom surface portion 58b arranged vertically respectively in addition to the pair of first side surface portions 53 and the pair of second side surface portions 54 respectively.

[0171] Likewise with the left first fitting recess 51, the left second fitting recess 52 is also recessed in two stages toward the inner side (right side) from the left end surface of the second core arrangement portion 44. Further, the left second fitting recess 52 has, for example, the first top surface portion 59a and the second top surface portion 59b arranged horizontally respectively and the first bottom surface portion 58a and the second bottom surface portion 58b arranged vertically respectively in addition to the pair of first side surface portions 53 and the pair of second side surface portions 54 respectively.

[0172] ​Further, the right second fitting recess 52 is formed in left-right symmetry with the left second fitting recess 52. Therefore, the right second fitting recess 52 is recessed in two stages toward the inner side (left side) from the right end surface of the second core arrangement portion 44. Further, the right second fitting recess 52 has, for example, a first top surface portion 59a and a second top surface portion 59b arranged horizontally respectively, and a first bottom surface portion 58a and a second bottom surface portion 58b arranged vertically respectively, in addition to a pair of first side surface portions 53 and a pair of second side surface portions 54 respectively.

[0173] In the case of the present embodiment, a plurality of protrusions 55 (six protrusions 55 in the case of the present embodiment) are formed in the fitting recess 50.

[0174] When the terminal member 80 is fitted into the fitting recess 50, the terminal member 80 is pressed into the fitting recess 50 while flattening the plurality of protrusions 55. Further, in the case of the present embodiment, the terminal member 80 is pressed into the fitting recess 50 while flattening the plurality of protrusions 55 and the pair of first side surface portions 53. Figure 7 、 Figure 8 、 Figure 10 In (a) of FIG. 6 and (a) of FIG. 7, the main body member 20 is illustrated in a state before the terminal member 80 is pressed into the fitting recess 50. Figure 11

[0175] More specifically, the protrusions 55 include, for example, four first protrusions 56 formed in the front and rear pair of first side surface portions 53 and two second protrusions 57 formed in the front and rear pair of second side surface portions 54.

[0176] However, in the present application, the number of the first protrusions 56 and the number of the second protrusions 57 formed in the fitting recess 50 are not limited to this example.

[0177] More specifically, two first protrusions 56 are formed in each of the front and rear pair of first side surface portions 53 respectively. Further, the first protrusions 56 formed in the first side surface portion 53 on the front side protrude toward the standing plate portion 87 (rear side) of the terminal member 80, and are flattened between the standing plate portion 87 and the first side surface portion 53 on the one side. Similarly, the first protrusions 56 formed in the first side surface portion 53 on the rear side protrude toward the standing plate portion 87 (front side) of the terminal member 80, and are flattened between the standing plate portion 87 and the first side surface portion 53 on the other side. Further, the standing plate portion 87 is fitted into the fitting recess 50 in a state in which the first protrusions 56 formed in the first side surface portion 53 on the front side press the first side surface portion 53 on the rear side, and the first protrusions 56 formed in the first side surface portion 53 on the rear side press the first side surface portion 53 on the front side.

[0178] ​In addition, two second protrusions 57 are formed in each of the front and rear pair of second side surface portions 54. Moreover, the second protrusion 57 formed in the front side surface portion 54 protrudes toward the outside terminal 85 (rear side) of the terminal member 80, and is crushed between the outside terminal 85 and the front side surface portion 54. Likewise, the second protrusion 57 formed in the rear side surface portion 54 protrudes toward the outside terminal 85 (front side) of the terminal member 80, and is crushed between the outside terminal 85 and the rear side surface portion 54. Moreover, the outside terminal 85 is pressed toward the rear side surface portion 54 by the second protrusion 57 formed in the front side surface portion 54, and is pressed toward the front side surface portion 54 by the second protrusion 57 formed in the rear side surface portion 54, and is fitted into the fitting recess 50.

[0179] As shown in Figs. 1 and 2, the outside terminal 85 and the standing plate portion 87 of each terminal member 80 are accommodated in the fitting recess 50 in plan view, and further accommodated inside the outline of the base portion 30. On the other hand, the inside terminal 86 of each terminal member 80 protrudes outward of the fitting recess 50 in plan view, and further protrudes outward of the outline of the base portion 30. Figure 3 Figure 4 As shown in Figs. 1 and 2, the outside terminal 85 and the standing plate portion 87 of each terminal member 80 are accommodated in the fitting recess 50 in plan view, and further accommodated inside the outline of the base portion 30. On the other hand, the inside terminal 86 of each terminal member 80 protrudes outward of the fitting recess 50 in plan view, and further protrudes outward of the outline of the base portion 30.

[0180] In addition, as shown in Figs. 1 and 2, the lower surface of the outside terminal 85 (second portion) of each terminal member 80 is positioned lower than the lower surface of the core arrangement portion 40 in side view or front view. The lower surfaces of the outside terminals 85 (second portions) of the terminal members 80 are arranged so as to be flush with each other, and constitute the lowermost surface of the coil member 100. Figure 6 Figure 10 In addition, as shown in Figs. 1 and 2, the lower surface of the outside terminal 85 (second portion) of each terminal member 80 is positioned lower than the lower surface of the core arrangement portion 40 in side view or front view. The lower surfaces of the outside terminals 85 (second portions) of the terminal members 80 are arranged so as to be flush with each other, and constitute the lowermost surface of the coil member 100.

[0181] Thus, each terminal member 80 is fitted into the corresponding fitting recess 50.

[0182] In the present embodiment, the four first protrusions 56 formed in the front and rear pair of first side surface portions 53 are set to the same shape and the same size as each other.

[0183] More specifically, as shown in Figs. 1 and 2, two first protrusions 56 are formed in each of the front and rear pair of first side surface portions 53. In other words, in the front and rear pair of first side surface portions 53, the front and rear pair of first protrusions 56 are formed on the upper side and the lower side, respectively. Figure 10 Figure 11 Each first protrusion 56 extends linearly from the first bottom surface portion 58a in the left-right direction. Moreover, the front end portion 56a (end portion on the side opposite to the depth direction of the fitting recess 50) of each first protrusion 56 terminates at the intermediate portion (intermediate portion in the left-right direction) of the first side surface portion 53.

[0184] Each first protrusion 56 extends linearly from the first bottom surface portion 58a in the left-right direction. Moreover, the front end portion 56a (end portion on the side opposite to the depth direction of the fitting recess 50) of each first protrusion 56 terminates at the intermediate portion (intermediate portion in the left-right direction) of the first side surface portion 53.​​​

[0185] In addition, in the up-down direction, the height positions of the front and rear pair of first protrusions 56 arranged on the upper side are equal to each other.

[0186] Similarly, in the up-down direction, the height positions of the front and rear pair of first protrusions 56 arranged on the lower side are equal to each other.

[0187] Furthermore, as shown in (b) of FIG. 6, the upper portion of the standing plate portion 87 of the terminal member 80 is sandwiched by the front and rear pair of first protrusions 56 on the upper side, and the lower portion of the standing plate portion 87 of the terminal member 80 is sandwiched by the front and rear pair of first protrusions 56 on the lower side. Figure 10

[0188] More specifically, the two first protrusions 56 formed on the front side of the first side surface portion 53 respectively abut against the front side end surface of the standing plate portion 87, and are flattened between the front side end surface and the first side surface portion 53 on the front side.

[0189] Similarly, the two first protrusions 56 formed on the rear side of the first side surface portion 53 respectively abut against the rear side end surface of the standing plate portion 87, and are flattened between the rear side end surface and the first side surface portion 53 on the rear side.

[0190] In addition, the two second protrusions 57 formed on the front and rear pair of second side surface portions 54 are, for example, set to the same shape and the same size as each other.

[0191] More specifically, as shown in (a) of FIG. 7 and (a) of FIG. 8, one second protrusion 57 is respectively formed on each of the front and rear pair of first side surface portions 53. In other words, the front and rear pair of second protrusions 57 are formed on the front and rear pair of first side surface portions 53. Figure 10 Figure 11 More specifically, as shown in (a) of FIG. 7 and (a) of FIG. 8, one second protrusion 57 is respectively formed on each of the front and rear pair of first side surface portions 53. In other words, the front and rear pair of second protrusions 57 are formed on the front and rear pair of first side surface portions 53.

[0192] Each second protrusion 57 extends linearly from the second bottom surface portion 58b in the left-right direction. Furthermore, the front end portion 57a (the end portion on the side opposite to the depth direction of the fitting recess 50) of each second protrusion 57 terminates at the rear end portion of the second side surface portion 54 (the end portion in the depth direction of the fitting recess 50). More specifically, in the depth direction of the fitting recess 50, the first protrusion 56 is located at a position on the side opposite to the depth direction than the second protrusion 57.

[0193] In addition, in the up-down direction, the height position of the second protrusion 57 formed on the front side of the second side surface portion 54 is the same as the height position of the second protrusion 57 formed on the rear side of the second side surface portion 54.

[0194] Furthermore, as shown in (b) of FIG. 7 and (b) of FIG. 8, the horizontal plate portion (the outer terminal 85) of the terminal member 80 is sandwiched by the front and rear pair of second protrusions 57. Figure 10 Furthermore, as shown in (b) of FIG. 7 and (b) of FIG. 8, the horizontal plate portion (the outer terminal 85) of the terminal member 80 is sandwiched by the front and rear pair of second protrusions 57.​​

[0195] More specifically, the second protrusion 57 formed on the front side of the second side surface portion 54 abuts against the front side end surface of the external terminal 85, and is crushed between the front side end surface and the front side of the second side surface portion 54.

[0196] Likewise, the second protrusion 57 formed on the rear side of the second side surface portion 54 abuts against the rear side end surface of the external terminal 85, and is crushed between the rear side end surface and the rear side of the second side surface portion 54.

[0197] In this way, in the case of the present embodiment, the protrusions 55 are formed in the pair of first surface portions (in the case of the present embodiment, the aforementioned front and rear pair of first side surface portions 53) of the fitting recess 50, respectively.

[0198] Furthermore, the protrusion 55 formed on one of the pair of first surface portions protrudes toward the terminal member 80, and is crushed between the terminal member 80 and the other of the first surface portions. Moreover, the terminal member 80 is pressed by the protrusion 55 formed on the other of the surface portions toward the one of the first surface portions.

[0199] On the other hand, the protrusion 55 formed on the other of the pair of first surface portions protrudes toward the terminal member 80, and is crushed between the terminal member 80 and the other of the first surface portions. Moreover, the terminal member 80 is pressed by the protrusion 55 formed on the other of the surface portions toward the one of the first surface portions.

[0200] In this way, the terminal member 80 is sandwiched between the pair of first surface portions by the protrusion 55 formed on one of the first surface portions and the protrusion 55 formed on the other of the first surface portions.

[0201] According to such a structure, it is possible to suppress positional displacement of the terminal member 80 with respect to each of the pair of first surface portions.

[0202] In addition, as shown in (a) to (c) of FIG. 6, the fitting recess 50 includes a pair of first surface portions (in the case of the present embodiment, the aforementioned front and rear pair of first side surface portions 53) and a pair of second surface portions (in the case of the present embodiment, the aforementioned front and rear pair of second side surface portions 54). Figure 10 Figure 11 As shown in (a) to (c) of FIG. 6, the fitting recess 50 includes a pair of first surface portions (in the case of the present embodiment, the aforementioned front and rear pair of first side surface portions 53) and a pair of second surface portions (in the case of the present embodiment, the aforementioned front and rear pair of second side surface portions 54).

[0203] The terminal member 80 includes a first portion (in the case of the present embodiment, the aforementioned standing plate portion 87) disposed between the pair of first surface portions and a second portion (in the case of the present embodiment, the aforementioned external terminal 85) disposed between the pair of second surface portions and formed as one member with the first portion.

[0204] ​The protrusions 55 include, for example, first protrusions 56 formed in the first flat portion of at least one of the pair of first flat portions and second protrusions 57 formed in the second flat portion of at least one of the pair of second flat portions.

[0205] The first protrusions 56 protrude toward the first portion (the standing plate portion 87) of the terminal member 80 and are flattened between the first portion and the first flat portion (the first side portion 53) of one side.

[0206] The first portion (the standing plate portion 87) of the terminal member 80 is fitted into the fitting recess 50 in a state of being pressed by the first protrusions 56 toward the first flat portion side of at least the other of the pair of first flat portions (the first side portion 53).

[0207] The second protrusions 57 protrude toward the second portion (the external terminal 85) of the terminal member 80 and are flattened between the second portion and the second flat portion (the second side portion 54) of one side.

[0208] The second portion (the external terminal 85) of the terminal member 80 is fitted into the fitting recess 50 in a state of being pressed by the second protrusions 57 toward the second flat portion side of at least the other of the pair of second flat portions (the second side portion 54).

[0209] Thus, different portions in the terminal member 80 are sandwiched by the first flat portions and the second flat portions, respectively. Therefore, the different portions in the terminal member 80 can be stably fixed to the fitting recess 50, respectively.

[0210] In addition, each of the pair of first flat portions and each of the pair of second flat portions extend, for example, in directions crossing each other.

[0211] Thus, in the two directions crossing each other, the terminal member 80 can be more stably fixed to the base portion 30.

[0212] More specifically, as described above, each of the pair of first flat portions and each of the pair of second flat portions extend, for example, in directions perpendicular to each other (the up-down direction and the left-right direction).

[0213] Therefore, in the two directions perpendicular to each other, the positional deviation of the terminal member 80 with respect to the fitting recess 50 can be more reliably suppressed.

[0214] In addition, in the case of the present embodiment, the facing directions of the pair of first flat portions and the facing directions of the pair of second flat portions are the same directions (in the case of the present embodiment, the front-rear direction as described above).

[0215] Thus, different portions of the terminal component 80 are respectively held by the first surface portion and the second surface portion in the same direction. Therefore, the terminal component 80 can be more stably fixed to the base portion 30.

[0216] Furthermore, as described above, the terminal component 80 has an L-shaped portion, which includes an upright plate portion 87 that stands upright relative to the mounting surface that engages with the terminal component 80 and a horizontal plate portion (in this embodiment, as described above, an external terminal 85) that extends substantially horizontally from the upright plate portion 87.

[0217] The first part of the terminal component 80 is the upright plate part 87, and the second part of the terminal component 80 is the horizontal plate part (external terminal 85). That is, the upright plate part 87 of the terminal component 80 is disposed between a pair of first surface parts, and the horizontal plate part (external terminal 85) is disposed between a pair of second surface parts.

[0218] With this structure, the mutually perpendicular portions (elevated plate portion 87 and horizontal plate portion) of the terminal component 80 are respectively clamped by the first surface portion and the second surface portion. Therefore, the terminal component 80 can be more stably fixed to the base portion 30 in two mutually perpendicular directions (vertical direction and horizontal direction).

[0219] In addition, here, "the mounting surface that engages with the terminal component 80" refers to the pattern-forming surface on the circuit board on which the surface-mount type coil component 100 of this embodiment is mounted, which is the surface on which the external terminals 85 (part 2) of each terminal component 80 described later are placed. The coil component 100 has a plane (terminal lower surface) that is common to the lower surfaces (lowest surfaces of coil component 100) of the external terminals 85 of each terminal component 80. When the surface of the coil component 100 is mounted on the circuit board, this terminal lower surface engages with the mounting surface.

[0220] In addition, in this embodiment, the first part and the second part of the terminal component 80 are formed continuously to each other, but the present invention is not limited to this example. For example, in the terminal component 80, other parts that do not engage with the fitting recess 50 may also be arranged between the first part and the second part.

[0221] In addition, such as Figure 11 (a) and Figure 12 As shown in (b), at least one of the protrusions 55 is, for example, a protrusion extending along the depth direction of the fitting recess 50.

[0222] Therefore, the terminal component 80 can be more stably fixed to the fitting recess 50 in the depth direction of the fitting recess 50.

[0223] More specifically, the first protrusions 56 and the second protrusions 57 are, for example, protrusions extending in the depth direction of the fitting recess 50, respectively.

[0224] Thus, the standing plate portion 87 and the horizontal plate portion (external terminal 85) of the terminal member 80 can be more stably fixed to the fitting recess 50 in the depth direction of the fitting recess 50, respectively.

[0225] Further, the width dimension (W1) of the first protrusions 56 is, for example, larger than the width dimension (W2) of the second protrusions 57. Figure 12 Figure 12

[0226] Thus, the standing plate portion 87 of the terminal member 80 can be more firmly fixed to the fitting recess 50 by the first protrusions 56, and the position of the horizontal plate portion (external terminal 85) of the terminal member 80 relative to the terminal member 80 can be suppressed from being shifted by the second protrusions 57.

[0227] Further, the width dimension of the first protrusions 56 and the second protrusions 57 herein refers to the dimension in the direction perpendicular to both the extending direction and the protruding direction of the first protrusions 56 and the second protrusions 57, respectively.

[0228] The coil member 100 of the present embodiment is configured as described above. As an example, such a coil member 100 can be used as a common mode choke coil. However, the use of the coil member 100 is not limited to this example.

[0229] Hereinafter, the manufacturing method (hereinafter, sometimes referred to as the present method) of the coil member 100 of the present embodiment will be described in more detail.

[0230] In the present method, the process of preparing the main body member 20, the process of pressing the terminal member 80 into the fitting recess 50, the process of winding the coil 90 around the magnetic core 10, the process of arranging the magnetic core 10 on the main body member 20, and the process of fixing the winding 93 of the coil 90 to the internal terminal 86 of the terminal member 80 are performed in this order. However, in the present method, the process of preparing the main body member 20 and the process of pressing the terminal member 80 into the fitting recess 50 can also be performed after the process of winding the coil 90 around the magnetic core 10.

[0231] First, in the process of preparing the main body member 20, the main body member 20 (the base portion 30, the cover portion 60, and the connecting portion 70) is integrally molded using an insulating material such as resin, for example.

[0232] Next, in the process of pressing the terminal member 80 into the fitting recess 50, the terminal member 80 is pressed into the fitting recess 50 while flattening the plurality of protrusions 55 with the terminal member 80. ​​

[0233] Here, in the case of the present embodiment, at least a portion of the terminal member 80 is pressed into between the pair of first flat portions while flattening one or more protrusions 55 with the terminal member 80.

[0234] Thus, the terminal member 80 can be fixed to the fitting recess 50 well without using an adhesive or the like. Also, for example, even if there is a deviation in the size of the terminal member 80 with respect to the fitting recess 50, the protrusions 55 can be flattened with a flattened amount corresponding to the size of the terminal member 80, so the deviation in the size of the terminal member 80 can be absorbed.

[0235] More specifically, in the case of the present embodiment, the first protrusion 56 is located on the side opposite the depth direction further than the second protrusion 57 in the depth direction of the fitting recess 50. Also, as shown in (a) of FIG. 6 and (b) of FIG. 7, after the first portion of the terminal member 80 is pressed into between the pair of first flat portions while flattening the first protrusion 56 with the first portion, the second portion of the terminal member 80 is pressed into between the pair of second flat portions while flattening the second protrusion 57 with the second portion. Figure 13 Figure 13 Thus, the terminal member 80 can be fixed to the fitting recess 50 well without using an adhesive or the like. Also, for example, even if there is a deviation in the size of the terminal member 80 with respect to the fitting recess 50, the protrusions 55 can be flattened with a flattened amount corresponding to the size of the terminal member 80, so the deviation in the size of the terminal member 80 can be absorbed.

[0236] Thus, the terminal member 80 can be fixed to the fitting recess 50 well without using an adhesive or the like. Also, for example, even if there is a deviation in the size of the terminal member 80 with respect to the fitting recess 50, the protrusions 55 can be flattened with a flattened amount corresponding to the size of the terminal member 80, so the deviation in the size of the terminal member 80 can be absorbed.

[0237] Also, here, "after the first portion is pressed into between the pair of first flat portions" means after the pressing of the first portion with respect to the pair of first flat portions has started, and does not necessarily mean after the pressing of the first portion has been completed. Thus, for example, the pressing of the second portion can be started before the pressing of the first portion has been completed, as long as at least a portion of the first portion of the terminal member 80 is pressed in first compared to the second portion.

[0238] Also, here, "in the depth direction of the fitting recess 50, the first protrusion 56 is located on the side opposite the depth direction further than the second protrusion 57" means that at least the tip portion 56a (the end portion on the side opposite the depth direction) of the first protrusion 56 is located on the side opposite the depth direction further than the tip portion 57a (same above) of the second protrusion 57. Thus, for example, a portion of the formation region of the first protrusion 56 and a portion of the formation region of the second protrusion 57 can overlap each other in the depth direction of the fitting recess 50.

[0239] ​Here, in the state before the terminal component 80 is pressed into the fitting recess 50, the protrusion amount of the first protrusion 56 ( Figure 12 The dimension H1 shown in (a) is more protruding than the second protrusion 57 by ( Figure 12 The dimension H2 shown in (a) is large.

[0240] According to this structure, when the terminal component 80 is pressed into the fitting recess 50, the first part of the terminal component 80 can be more effectively fixed to the pair of first surface portions by the first protrusion 56.

[0241] Furthermore, the "protrusion amount of the first protrusion 56" mentioned here refers to the height dimension of the first protrusion 56 in the direction opposite to each other of the pair of first planar portions. Similarly, the "protrusion amount of the second protrusion 57" mentioned here refers to the height dimension of the second protrusion 57 in the direction opposite to each other of the pair of second planar portions.

[0242] More specifically, in this embodiment, before the terminal component 80 is pressed into the fitting recess 50, such as Figure 10 (a) and Figure 10 As shown in (b), in the front-rear direction, the separation distance D1 between the front and rear pairs of first protrusions 56 and the separation distance D2 between the front and rear pairs of second protrusions 57 are respectively set to be smaller than the width dimension W3 of the terminal component 80 (the width dimension of the upright plate portion 87 and the width dimension of the horizontal plate portion).

[0243] Therefore, the first protrusion 56 can be flattened using the upright plate portion 87 while the upright plate portion 87 is pressed between the pair of first surface portions. Similarly, the second protrusion 57 can be flattened using the horizontal plate portion (external terminal 85) while the horizontal plate portion is pressed between the pair of second surface portions.

[0244] On the other hand, in the front-rear direction, the separation distance D1 between the front and rear pairs of first protrusions 56 is set to be smaller than the separation distance D2 between the front and rear pairs of second protrusions 57.

[0245] Therefore, the flattening amount of the first protrusion 56 when pressing the upright plate portion 87 between the pair of first surface portions is greater than the flattening amount of the second protrusion 57 when pressing the horizontal plate portion between the pair of second surface portions. That is, the force with which the first protrusion 56 presses the terminal member 80 toward the first surface portion is greater than the force with which the second protrusion 57 presses the terminal member 80 toward the second surface portion. Therefore, the first part of the terminal member 80 can be more effectively fixed to the pair of first surface portions by the first protrusion 56.

[0246] Furthermore, as described above, in the state before the terminal component 80 is pressed into the fitting recess 50, such as Figure 12As shown in (a), the protrusion 55 is tapered toward the protruding direction of the protrusion 55.

[0247] According to such a structure, when the terminal member 80 is pressed into the fitting recess 50, the tip end of the protrusion 55 (the tip end in the protruding direction) can be easily flattened, and as the fitting force of the terminal member 80 with respect to the fitting recess 50 becomes larger, the amount of flattening of the protrusion 55 can reach the limit. Therefore, the desired amount of flattening of the protrusion 55 can be obtained according to the play of the fitting of the terminal member 80 with respect to the fitting recess 50.

[0248] More specifically, in the case of the present embodiment, in a cross section perpendicular to the extending direction of the protrusion 55 (refer to (a) of FIG. 6), the first protrusion 56 and the second protrusion 57 are each formed in a substantially triangular shape tapered toward the protruding direction. However, in the present application, the cross-sectional shape of the protrusion 55 is not limited to this example, and can be, for example, a semicircular shape, a trapezoidal shape, or the like. Figure 12

[0249] Also, in the case of the present embodiment, as shown in (c) of FIG. 6, in a state before the terminal member 80 is pressed into the fitting recess 50, the tip end portion of the protrusion 55 in the extending direction of the protrusion 55 is formed in a chamfered shape in which the protruding amount decreases toward the direction opposite to the depth direction. Figure 12

[0250] Furthermore, in the process of pressing the terminal member 80 into the fitting recess 50, after the terminal member 80 jumps over the protrusion 55 along the tip end portion of the protrusion 55, the terminal member 80 is guided along the protrusion 55 toward the depth direction of the fitting recess 50.

[0251] According to such a structure, when the terminal member 80 is pressed into the fitting recess 50, the terminal member 80 can be smoothly pressed into the depth direction of the fitting recess 50 along the protrusion 55.

[0252] In the case of the present embodiment, as an example, as shown in (b) of FIG. 5 and (c) of FIG. 6, the tip end portion 56a of each first protrusion 56 is formed in a chamfered shape in which the protruding amount gradually decreases toward the direction opposite to the depth direction. Figure 12 Figure 12 Accordingly, even in the case where the protruding amount H1 (the maximum protruding amount) of the first protrusion 56 is large as described above, the standing plate portion 87 can be smoothly pressed into the depth direction of the fitting recess 50 along the first protrusion 56.

[0253] Accordingly, even in the case where the protruding amount H1 (the maximum protruding amount) of the first protrusion 56 is large as described above, the standing plate portion 87 can be smoothly pressed into the depth direction of the fitting recess 50 along the first protrusion 56.

[0254] ​​​Furthermore, in this embodiment, the protrusion amount H1 of each first protrusion 56, excluding the front end 56a, is approximately constant regardless of its position in the extending direction of the first protrusion 56. Similarly, the protrusion amount H2 of each second protrusion 57 is approximately constant regardless of its position in the extending direction of the second protrusion 57.

[0255] More specifically, each terminal component 80 is inserted into the corresponding fitting recess 50 from the side (left-right direction in this embodiment). At this time, as... Figure 13 As shown in (a), the terminal component 80 is inserted along the depth direction of the fitting recess 50 while maintaining surface contact with the upper surface of the horizontal plate portion (the upper surface of the outer terminal 85) along the second top portion 59b. This facilitates alignment of the terminal component 80 relative to the fitting recess 50 in the vertical direction. Then, as the terminal component 80 is further inserted relative to the fitting recess 50, the upright plate portion 87 of the terminal component 80 flattens each of the first protrusions 56 and presses them between the front and rear pairs of first side portions 53. Next, the outer terminal 85 of the terminal component 80 flattens each of the second protrusions 57 and presses them between the front and rear pairs of second side portions 54. Then, as... Figure 13 As shown in (b), the pressing of the erecting plate portion 87 relative to the pair of first side portions 53 is completed by pressing the erecting plate portion 87 along each of the first protrusions 56 until it abuts (face contact) with the first bottom portion 58a, and the pressing of the external terminal 85 relative to the pair of second side portions 54 is completed.

[0256] Thus, with the upright plate portion 87 of the terminal component 80 in contact with the first bottom surface 58a of the fitting recess 50, and the horizontal plate portion (outer terminal 85) of the terminal component 80 in contact with the second top surface 59b of the fitting recess 50, the terminal component 80 engages with the fitting recess 50. Therefore, positional displacement of the terminal component 80 relative to the fitting recess 50 can be more reliably suppressed in both the vertical and horizontal directions.

[0257] Next, in the process of winding the coil 90 onto the magnetic core 10, each winding 93 of the coil 90 (first coil 91 and second coil 92) is wound around the base 12 of the first magnetic core 11a and the second magnetic core 11b.

[0258] Next, in a process of arranging the magnetic core 10 to the main body member 20, the first magnetic core 11a and the second magnetic core 11b are arranged on the core arrangement portion 40, respectively. In more detail, the outer leg portions 13 of the front side of the first magnetic core 11a are inserted from the left onto the upper surfaces of the left end portions of the first core arrangement portion 42, and the outer leg portions 13 of the rear side of the first magnetic core 11a are inserted from the left onto the upper surfaces of the left end portions of the second core arrangement portion 44. Similarly, the outer leg portions 13 of the front side of the second magnetic core 11b are inserted from the right onto the upper surfaces of the right end portions of the first core arrangement portion 42, and the outer leg portions 13 of the rear side of the second magnetic core 11b are inserted from the right onto the upper surfaces of the right end portions of the second core arrangement portion 44. In this way, the magnetic core 10 is arranged between the opposing surface 61 of the cover portion 60 and the opposing surface 31 of the base portion 30. Also, the first convex curved surface 14 of the magnetic core 10 is engaged with the recessed portion 46 (concave curved surface 47) of the core arrangement portion 40. Next, the first magnetic core 11a and the second magnetic core 11b are fixed to each other by an adhesive not shown. Thus, the magnetic core 10 having a planar ring shape is constituted.

[0259] Next, in a process of fixing the windings 93 of the coil 90 to the internal terminals 86 of the terminal member 80, the end portions of the windings 93 of the coil 90 are fixed to the internal terminals 86 of the corresponding terminal members 80. In the case of the present embodiment, as an example, the end portions of the windings 93 are fixed to the internal terminals 86 by resistance welding.

[0260] In this way, the coil member 100 is obtained.

[0261] In this way, the present method is a method of manufacturing the coil member 100 by fitting the plurality of terminal members 80 to the base portion 30, and has the following processes: preparing the main body member 20 having the base portion 30, the fitting recessed portion 50 formed in the base portion 30, and the one or more protrusions 55 formed in the fitting recessed portion 50; and fitting the terminal member 80 to the fitting recessed portion 50 while flattening the one or more protrusions 55 with the terminal member 80.

[0262] According to such a method, the terminal member 80 can be easily and stably fixed to the base portion 30 without using an adhesive or the like. Also, for example, even if there is a deviation in the dimensions of the terminal member 80 with respect to the fitting recessed portion 50, the protrusions 55 can be flattened in an amount corresponding to the dimensions of the terminal member 80, so the deviation in the dimensions of the terminal member 80 can be absorbed. That is, the manufacturing of the coil member 100 becomes easier.

[0263] <Variant of Embodiment 1>

[0264] Next, (a) of the present application and Figure 14 , Figure 15 are used.Figure 15 (b) describes a modification of Embodiment 1.

[0265] In the case of the present modification, as Figure 14 and Figure 15 (a) described above, unlike Embodiment, the base portion 30 and the cover portion 60 are respectively composed of different members.

[0266] Even in this case, as in the above-described Embodiment, the fitting recess 50 is formed in the base portion 30, and the terminal member 80 is fitted with the fitting recess 50 by the fitting configuration (the plurality of protrusions 55).

[0267] Therefore, it is possible to easily and stably fix the terminal member 80 to the base portion 30 without using an adhesive or the like.

[0268] More specifically, in the case of the present modification, the base portion 30 has a bobbin portion 310 in which the winding 93 constituting the coil 90 is wound, and a terminal holding portion 320 that holds a plurality of terminal members 80, instead of the plate-shaped portion 35 and the core arrangement portion 40.

[0269] In addition, the coil member 100 has the cover portion 60 (cover member) that covers the periphery of the bobbin portion 310 as a member different from the base portion 30.

[0270] Furthermore, the coil member 100 also has a fixing band 330 that fixes the two or more members constituting the coil member 100 to each other.

[0271] In the case of the present modification, the base portion 30 has a pair of left and right terminal holding portions 320, a first fitting recess 51 is formed in the left terminal holding portion 320, and the first terminal member 81 is fitted with the first fitting recess 51. Similarly, a second fitting recess 52 is formed in the right terminal holding portion 320, and the second terminal member 82 is fitted with the second fitting recess 52.

[0272] More specifically, the pair of left and right terminal holding portions 320 are each formed in a substantially cuboid shape of a long strip in front and back. A plurality of first fitting recesses 51 are formed in the left terminal holding portion 320, and the plurality of first fitting recesses 51 are arranged in the front and back direction. Similarly, a plurality of second fitting recesses 52 are formed in the right terminal holding portion 320, and the plurality of second fitting recesses 52 are arranged in the front and back direction.

[0273] In addition, in the case of the present modification, as Figure 15As shown in (b) of FIG. 12, the shape of each first fitting recess 51 is also configured similarly to the first fitting recess 51 of the above embodiment. Similarly, the shape of each first fitting recess 51 is configured similarly to the second fitting recess 52 of the above embodiment. Also, each terminal member 80 is formed similarly to the terminal member 80 of the above embodiment.

[0274] Therefore, in the case of the present modification example, the first protrusion 56 also protrudes toward the first portion (the standing plate portion 87) of the terminal member 80, and is flattened between the first portion and the one first flat portion (the first side portion 53).

[0275] The first portion (the standing plate portion 87) of the terminal member 80 is fitted to the fitting recess 50 in a state of being pressed by the first protrusion 56 toward the first flat portion side of at least the other one of the pair of first flat portions (the first side portion 53).

[0276] The second protrusion 57 protrudes toward the second portion (the external terminal 85) of the terminal member 80, and is flattened between the second portion and the one second flat portion (the second side portion 54).

[0277] The second portion (the external terminal 85) of the terminal member 80 is fitted to the fitting recess 50 in a state of being pressed by the second protrusion 57 toward the second flat portion side of at least the other one of the pair of second flat portions (the second side portion 54).

[0278] In addition, in the case of the present modification example, the coil 90 is indirectly wound on the magnetic core 10 via the bobbin portion 310.

[0279] More specifically, the first magnetic core 11a and the second magnetic core 11b are each an E-core. A portion of the first magnetic core 11a is inserted into the bobbin portion 310 via the cover portion 60 (see (a) of FIG. 12). Similarly, a portion of the second magnetic core 11b is inserted into the bobbin portion 310 via the cover portion 60. Figure 15

[0280] <Modification Example 2 of the Embodiment>

[0281] Next, the modification example 2 of the embodiment will be described using (a) of FIG. 13 and (b) of FIG. 14. Figure 16 Figure 17 Figure 17

[0282] In the case of the present modification example, as with the above modification example 1, as shown in (a) of FIG. 13 and (b) of FIG. 14, the base portion 30 and the cover portion 60 are each configured by different members. Figure 16 Figure 17 Figure 17

[0283] ​​​​​​​Even in such a case, the terminal member 80 can be fixed to the base portion 30 by the same fitting configuration as in Embodiment and Modified Example 1. Thus, the terminal member 80 can be easily and stably fixed to the base portion 30 without using an adhesive or the like.

[0284] Here, in the case of the present modified example, the base portion 30 has a pair of front and rear terminal holding portions 320, and the first fitting recesses 51 are formed in the front terminal holding portion 320 with which the first terminal member 81 is fitted. Similarly, the second fitting recesses 52 are formed in the rear terminal holding portion 320 with which the second terminal member 82 is fitted.

[0285] More specifically, the pair of front and rear terminal holding portions 320 are each formed in a left-right long rectangular parallelepiped shape. The pair of first fitting recesses 51 are formed in the front terminal holding portion 320, and the pair of first fitting recesses 51 are arranged in the left-right direction. Similarly, the pair of second fitting recesses 52 are formed in the rear terminal holding portion 320, and the pair of second fitting recesses 52 are arranged in the left-right direction.

[0286] In addition, in the case of the present modified example, as shown in (b) of FIG. 6, the shape of each first fitting recess 51 is also configured similarly to the first fitting recess 51 of the above-described embodiment. However, in the case of the present modified example, the first fitting recess 51 is open toward the front and the lower side, respectively. Thus, the opposing direction of the pair of first flat portions is the left-right direction, and the terminal member 80 is inserted from the front when being pressed into the first fitting recess 51. Figure 17 Similarly, the shape of each first fitting recess 51 is configured similarly to the second fitting recess 52 of the above-described embodiment. However, in the case of the present modified example, the second fitting recess 52 is open toward the rear and the lower side, respectively. Thus, the opposing direction of the pair of second flat portions is the left-right direction, and the terminal member 80 is inserted from the rear when being pressed into the second fitting recess 52.

[0287] Furthermore, each terminal member 80 is also formed similarly to the terminal member 80 of the above-described embodiment.

[0288] Thus, in the case of the present modified example, the first protrusion 56 also protrudes toward the first portion (the standing plate portion 87) of the terminal member 80, and is crushed between the first portion and the one first flat portion (the first side portion 53).

[0289] The first portion (the standing plate portion 87) of the terminal member 80 is fitted to the fitting recess 50 in a state of being pressed by the first protrusion 56 toward the side of the at least one other first flat portion (the first side portion 53) of the pair of first flat portions.

[0290]

[0291] ​The second protrusions 57 protrude toward the second portion (external terminal 85) of the terminal member 80, and are crushed between the second portion and the second flat portion (second side surface portion 54) on one side.

[0292] The second portion (external terminal 85) of the terminal member 80 is fitted into the fitting recess 50 in a state of being pressed by the second protrusions 57 toward the second flat portion side of at least the other of the pair of second flat portions (second side surface portions 54).

[0293] The above describes the embodiments and their modifications with reference to the drawings, but these are examples of the present application, and various structures other than the above can also be employed.

[0294] For example, in the above, an example in which the magnetic core 10 is configured with two U-shaped cores or two E-shaped cores as the divided cores 11 is described, but the present application is not limited to this example, and the magnetic core 10 can be configured with a U-shaped core and an I-shaped core as the divided cores 11, or an E-shaped core and an I-shaped core as the divided cores 11.

[0295] In addition, in the above, an example in which the magnetic core 10 is divided into two divided cores 11 is described, but the magnetic core 10 can also be divided into three or more divided cores 11, for example.

[0296] In addition, in the above, an example in which each of the first protrusions 56 is set to the same shape and the same size as each other is described, but the present application is not limited to this example, and each of the first protrusions 56 can be formed into different shapes from each other, or can be set to different sizes from each other.

[0297] Similarly, in the above, an example in which each of the second protrusions 57 is set to the same shape and the same size as each other is described, but the present application is not limited to this example, and each of the second protrusions 57 can be formed into different shapes from each other, or can be set to different sizes from each other.

[0298] More specifically, the plurality of protrusions 55 can include protrusions 55 formed as ridges and protrusions 55 formed as dots (hemispheres), for example.

[0299] In addition, in the above, an example in which the facing directions of each of the pair of first flat portions and the pair of second flat portions are the front-back direction or the left-right direction is described, but the present application is not limited to this example, and the facing directions of each of the pair of first flat portions and the pair of second flat portions can also be the up-down direction.

[0300] In addition, in the above, an example in which the facing directions of each of the pair of first flat portions and the pair of second flat portions are the same direction as each other is described, but the present application is not limited to this example, and the facing directions of each of the pair of first flat portions and the pair of second flat portions can also be different directions from each other.

[0301] Further, in the above, an example in which the first protrusions 56 of the respective first flat portions of the pair are flattened between the terminal member 80 and the first flat portions is described, but the present application is not limited to this example, and for example, it can be a state in which the first protrusions 56 of one of the first flat portions of the pair are flattened and the first protrusions 56 of the other of the first flat portions are substantially not flattened.

[0302] Similarly, in the above, an example in which the second protrusions 57 of the respective second flat portions of the pair are flattened between the terminal member 80 and the second flat portions is described, but the present application is not limited to this example, and for example, it can be a state in which the second protrusions 57 of one of the second flat portions of the pair are flattened and the second protrusions 57 of the other of the second flat portions are substantially not flattened.

[0303] The present embodiment includes the following technical ideas.

[0304] (1) A coil member including: a magnetic core; a coil wound around the magnetic core; a main body member including a base portion; and a plurality of terminal members made of metal and electrically connected to the coil, a fitting recess portion being formed in the base portion, the terminal members being fitted to the fitting recess portion by a fitting structure, wherein the fitting recess portion includes a pair of first flat portions facing each other, at least a portion of the terminal members is disposed between the pair of first flat portions, the fitting structure is one or more protrusions formed in the fitting recess portion, the protrusions are formed in the first flat portion of at least one of the pair of first flat portions, the protrusions protrude toward the terminal members and are flattened between the terminal members and the first flat portion of the at least one, and the terminal members are fitted to the fitting recess portion in a state of being pressed by the protrusions toward the first flat portion of the other of the pair of first flat portions.

[0305] (2) The coil member according to (1), wherein the protrusions are formed in the respective first flat portions of the pair of first flat portions, the protrusion formed in the first flat portion of the other of the pair of first flat portions protrudes toward the terminal members and is flattened between the terminal members and the first flat portion of the other, the terminal members are pressed by the protrusion formed in the first flat portion of the other toward the first flat portion of the one, and the terminal members are sandwiched by the protrusion formed in the first flat portion of the one and the protrusion formed in the first flat portion of the other between the pair of first flat portions.

[0306] (3) The coil member according to (1) or (2), wherein the fitting recess further includes a pair of second flat portions facing each other, the terminal member includes a first portion disposed between the pair of first flat portions and a second portion disposed between the pair of second flat portions and formed as one piece with the first portion, the protrusion includes a first protrusion formed on the first flat portion of at least one of the pair of first flat portions and a second protrusion formed on the second flat portion of at least one of the pair of second flat portions, the first protrusion protrudes toward the first portion of the terminal member and is flattened between the first portion and the first flat portion, the first portion of the terminal member is fitted to the fitting recess in a state pressed by the first protrusion toward the first flat portion of at least the other of the pair of first flat portions, and the second protrusion protrudes toward the second portion of the terminal member and is flattened between the second portion and the second flat portion, the second portion of the terminal member is fitted to the fitting recess in a state pressed by the second protrusion toward the second flat portion of at least the other of the pair of second flat portions.

[0307] (4) The coil member according to (3), wherein each of the pair of first flat portions and each of the pair of second flat portions extends in a direction crossing each other.

[0308] (5) The coil member according to (3) or (4), wherein the facing directions of the pair of first flat portions and the pair of second flat portions are the same direction.

[0309] (6) The coil member according to any one of (3) to (5), wherein the terminal member has an L-shaped portion including a standing plate portion standing with respect to a mounting surface to which the terminal member is joined and a horizontal plate portion extending substantially horizontally from the standing plate portion, the first portion of the terminal member is the standing plate portion, and the second portion of the terminal member is the horizontal plate portion.

[0310] (7) The coil member according to any one of (1) to (6), wherein at least one of the one or more protrusions extends in a depth direction of the fitting recess.

[0311] (8) The coil member according to any one of (3) to (7), wherein the first protrusion and the second protrusion are each a protrusion strip extending in a depth direction of the fitting recess.

[0312] (9) The coil component according to (8), wherein a width dimension of the first protrusion is larger than a width dimension of the second protrusion.

[0313] (10) A manufacturing method of a coil component, the manufacturing method being a method of manufacturing a coil component by fitting a plurality of terminal components to a base portion, the manufacturing method comprising: a step of preparing a main body component having the base portion, a fitting recess formed in the base portion, and one or more protrusions formed in the fitting recess; and a step of pressing the terminal component into the fitting recess while flattening the one or more protrusions with the terminal component.

[0314] (11) The manufacturing method of a coil component according to (10), wherein the fitting recess includes a pair of first flat surfaces facing each other, the protrusion is formed in the first flat surface of at least one of the pair of first flat surfaces, the protrusion protrudes toward the terminal component, and in the step of pressing the terminal component into the fitting recess, at least a portion of the terminal component is pressed between the pair of first flat surfaces while flattening the one or more protrusions with the first portion of the terminal component.

[0315] (12) The manufacturing method of a coil component according to (11), wherein the fitting recess further includes a pair of second flat surfaces facing each other, the terminal component includes a first portion disposed between the pair of first flat surfaces and a second portion disposed between the pair of second flat surfaces, the second portion extends from the first portion toward a depth direction of the fitting recess, the protrusion includes a first protrusion formed in the first flat surface of at least one of the pair of first flat surfaces and a second protrusion formed in the second flat surface of at least one of the pair of second flat surfaces, the first protrusion is located on a side opposite to the second protrusion in the depth direction of the fitting recess, in the step of pressing the terminal component into the fitting recess, the first portion of the terminal component is pressed between the pair of first flat surfaces while flattening the first protrusion, and thereafter, the second portion of the terminal component is pressed between the pair of second flat surfaces while flattening the second protrusion.

[0316] (13) The manufacturing method of a coil component according to (12), wherein a protruding amount of the first protrusion is larger than a protruding amount of the second protrusion in a state before the terminal component is pressed into the fitting recess.

[0317] (14) The manufacturing method of the coil member according to any one of (10) to (13), wherein the protrusion is tapered toward a protruding direction of the protrusion in a state before the terminal member is pressed into the fitting recess.

[0318] (15) The manufacturing method of the coil member according to any one of (10) to (14), wherein at least one of the one or more protrusions is a ridge extending in a depth direction of the fitting recess, a leading end portion in an extending direction of the ridge is formed in a chamfered shape in which a protruding amount decreases toward a direction opposite to the depth direction in a state before the terminal member is pressed into the fitting recess, and the terminal member is guided in the depth direction of the fitting recess along the ridge after jumping over the ridge in a process of pressing the terminal member into the fitting recess.

[0319] Reference Signs Description

[0320] 10: magnetic core; 11: divided core; 11a: first magnetic core (divided core); 11b: second magnetic core (divided core); 12: base; 13: outer leg portion; 14: first convex curved surface; 15: second convex curved surface; 20: main body member; 30: base portion; 31: opposing surface; 35: plate-shaped portion; 40: core arrangement portion; 42: first core arrangement portion; 44: second core arrangement portion; 45: protruding portion; 46: recessed portion; 47: concave curved surface; 48: raised portion; 49a: outer portion; 49b: inner portion; 50: fitting recess; 51: left and right pair of first fitting recesses; 52: left and right pair of second fitting recesses; 53: pair of first side surface portions (pair of first planar portions); 54: pair of second side surface portions (pair of second planar portions); 55: protrusion; 56: first protrusion; 56a: leading end portion; 57: second protrusion; 57a: leading end portion; 58a: first bottom surface portion; 58b: second bottom surface portion; 59a: first top surface portion; 59b: second top surface portion; 60: cover portion; 61: opposing surface; 62: main body; 63: notch-shaped portion; 66: positioning protrusion portion; 67: lower surface; 70: connecting portion; 80: terminal member; 80a: pair of side end surfaces; 81: first terminal member; 82: second terminal member; 85: external terminal (horizontal plate portion, one end portion); 86: internal terminal (other end portion); 87: standing plate portion; 90: coil; 91: first coil; 92: second coil; 93: winding; 94: winding portion; 95: lead wire; 100: coil member; 201: imaginary line; 310: bobbin portion; 320: terminal holding portion; 330: fixing band.

Claims

1. A coil component, comprising: a magnetic core; a coil wound around the magnetic core; a main body component having a base portion; and a plurality of terminal components made of metal, which are respectively electrically connected to the coil, a fitting recess is formed in the base portion, the terminal components are fitted to the fitting recess by a fitting configuration, wherein the fitting recess includes a pair of first flat portions facing each other, at least a portion of the terminal components is disposed between the pair of first flat portions, the fitting configuration is one or a plurality of protrusions formed in the fitting recess, the protrusions are formed in the first flat portion of at least one of the pair of first flat portions, the protrusions protrude toward the terminal components and are flattened between the terminal components and the first flat portion of the one, the terminal components are fitted to the fitting recess with being pressed by the protrusions toward the first flat portion of the other of the pair of first flat portions.

2. The coil component according to claim 1, wherein the protrusions are formed in each of the pair of first flat portions, the protrusion formed in the first flat portion of the other of the pair of first flat portions protrudes toward the terminal components and is flattened between the terminal components and the first flat portion of the other, the terminal components are pressed by the protrusion formed in the first flat portion of the one toward the first flat portion of the other, the terminal components are clamped between the protrusion formed in the first flat portion of the one and the protrusion formed in the first flat portion of the other of the pair of first flat portions.

3. The coil component according to claim 1 or 2, wherein the fitting recess further includes a pair of second flat portions facing each other, the terminal components include: a first portion disposed between the pair of first flat portions; and a second portion disposed between the pair of second flat portions and formed by one component with the first portion, the protrusions include: a first protrusion formed in the first flat portion of at least the one of the pair of first flat portions; and a second protrusion formed in the second flat portion of at least one of the pair of second flat portions, the first protrusion protrudes toward the first portion of the terminal components and is flattened between the first portion and the first flat portion of the one, the first portion of the terminal components is fitted to the fitting recess with being pressed by the first protrusion toward the first flat portion of at least the other of the pair of first flat portions, the second protrusion protrudes toward the second portion of the terminal components and is flattened between the second portion and the second flat portion of the one, the second portion of the terminal components is fitted to the fitting recess with being pressed by the second protrusion toward the second flat portion of at least the other of the pair of second flat portions.

4. The coil component according to claim 3, wherein ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Each of the pair of first flat portions and each of the pair of second flat portions extend in directions crossing each other.

5. The coil component according to claim 3 or 4, wherein The directions in which the pair of first flat portions oppose each other and the pair of second flat portions oppose each other are the same directions.

6. The coil component according to any one of claims 3 to 5, wherein The terminal component has a portion in the shape of an L letter, the portion in the shape of an L letter including a standing plate portion that stands with respect to a mounting surface to which the terminal component is joined and a horizontal plate portion that extends substantially horizontally from the standing plate portion, The first portion of the terminal component is the standing plate portion, The second portion of the terminal component is the horizontal plate portion.

7. The coil component according to any one of claims 1 to 6, wherein At least one of the one or more protrusions extends in a depth direction of the fitting recess.

8. The coil component according to any one of claims 3 to 7, wherein The first protrusion and the second protrusion are each a ridge that extends in the depth direction of the fitting recess.

9. The coil component according to claim 8, wherein The width dimension of the first protrusion is larger than the width dimension of the second protrusion.

10. A method of manufacturing a coil component that is a method of manufacturing a coil component by fitting a plurality of terminal components to a base portion, wherein The method of manufacturing has the following steps: preparing a main body component that has the base portion, a fitting recess formed in the base portion, and one or more protrusions formed in the fitting recess; and pressing the terminal component into the fitting recess while flattening the one or more protrusions with the terminal component.

11. The method of manufacturing a coil component according to claim 10, wherein The fitting recess includes a pair of first flat portions that oppose each other, The protrusion is formed in the first flat portion of at least one of the pair of first flat portions and protrudes toward the terminal component, and in the step of pressing the terminal component into the fitting recess, at least a portion of the terminal component is pressed between the pair of first flat portions while flattening the one or more protrusions with the terminal component.

12. The method of manufacturing a coil component according to claim 11, wherein The fitting recess also includes a pair of second flat portions that oppose each other, The terminal component includes: a first portion that is disposed between the pair of first flat portions; and a second portion that is disposed between the pair of second flat portions, The second portion extends from the first portion toward a depth direction of the fitting recess, The protrusion includes: a first protrusion that is formed in the first flat portion of at least one of the pair of first flat portions; and a second protrusion that is formed in the second flat portion of at least one of the pair of second flat portions, the first protrusion is located at a position on the side opposite to the second protrusion in the depth direction of the fitting recess, in the process of pressing the terminal member into the fitting recess, the first protrusion is flattened by the first portion of the terminal member while the first portion is pressed into the pair of first flat portions, and then the second protrusion is flattened by the second portion of the terminal member while the second portion is pressed into the pair of second flat portions.

13. The method of manufacturing a coil member according to claim 12, wherein in a state before the terminal member is pressed into the fitting recess, the protruding amount of the first protrusion is larger than the protruding amount of the second protrusion.

14. The method of manufacturing a coil member according to any one of claims 10 to 13, wherein in a state before the terminal member is pressed into the fitting recess, the protrusion is tapered toward the protruding direction of the protrusion.

15. The method of manufacturing a coil member according to any one of claims 10 to 14, wherein at least one of the one or more protrusions is a ridge extending in the depth direction of the fitting recess, in a state before the terminal member is pressed into the fitting recess, a leading end portion in the extending direction of the ridge is formed in a chamfered shape in which the protruding amount decreases toward the side opposite to the depth direction, in the process of pressing the terminal member into the fitting recess, the terminal member is guided in the depth direction of the fitting recess along the ridge after jumping over the ridge along the leading end portion of the ridge.

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