Coil component

Abstract

The coil component of the present application has a structure that can easily achieve a desired positional relationship between a cover member and a coil former; the coil component (100) includes a coil former (30), a magnetic core (10), a coil (70), and a cover member (80); at least one of the cover member (80) and the coil former (30) has a spring piece (83) that elastically exerts force on the other, at least one of the cover member (80) and the coil former (30) elastically exerts force on the other by the force of the spring piece (83), at least the other of the cover member (80) and the coil former (30) has a protrusion (46) and a recess (47), and a front end portion (83c) of the spring piece (83) has a contact portion (84a) that exerts force on the protrusion (46) and an entry portion (84b) that enters the recess (47).

Description

Technical Field

[0001] This invention relates to coil components. Background Technology

[0002] As a coil component, there are, for example, coil components disclosed in Patent Document 1.

[0003] The coil component in Patent Document 1 comprises: a coil frame (described as a coil frame in this document), a coil wound on the coil frame, a magnetic core inserted into the coil frame, and a cover member (described as a shell in this document) covering the coil frame.

[0004] [Existing Technical Documents]

[0005] [Patent Documents]

[0006] Patent Document 1: Japanese Patent Publication No. 2014-236128 Summary of the Invention

[0007] (The problem that the invention aims to solve)

[0008] However, based on the research of the inventors of this application, there is room for improvement in the structure of the coil component in Patent Document 1, from the perspective of forming the positional relationship between the cover component and the coil skeleton part into the desired positional relationship.

[0009] The present invention was made in view of the above-mentioned problems, and its object is to provide a coil component having a structure that can easily realize the desired positional relationship between the cover component and the coil frame.

[0010] (Technical solution used to solve the problem)

[0011] According to the present invention, a coil component is provided as follows.

[0012] The coil component of the present invention comprises: a coil frame portion, a magnetic core inserted into the coil frame portion, a coil wound on the coil frame portion, and a cover member that covers the coil frame portion by being sleeved on the outside of the coil frame portion.

[0013] At least one of the aforementioned cover member and the aforementioned coil frame portion has a spring sheet that elastically applies force to the other;

[0014] The aforementioned spring sheet has the following characteristics: one end of the spring sheet in the outward insertion direction is supported when the aforementioned cover member is sleeved on the outside of the aforementioned coil skeleton portion, and a single-support structure extends from that one end toward the front end of the spring sheet.

[0015] Through the force of the aforementioned spring sheet, in a first direction parallel to the mounting surface, at least one of the aforementioned cover member and the aforementioned coil frame portion elastically applies force to the other.

[0016] At least one of the above-mentioned cover member and the above-mentioned coil frame portion has: a protrusion and a recess that is recessed towards the first direction side compared to the above-mentioned protrusion;

[0017] The recess is adjacent to the protrusion on the extending direction side of the spring sheet;

[0018] The front end of the spring sheet has: a contact portion that contacts the protrusion and applies force to the protrusion, and an entry portion that is located on the front end side and enters the recess compared to the contact portion;

[0019] The spring sheet is bent such that the inlet portion is located on the first direction side relative to the contact portion, and at the contact portion and the protrusion, a force is generated that pushes the coil skeleton portion upward by the cover member.

[0020] (Invention Effects)

[0021] According to the present invention, the desired positional relationship between the cover component and the coil frame can be easily achieved. Attached Figure Description

[0022] Figure 1 This is a perspective view of the coil component involved in the implementation method.

[0023] Figure 2 This is an exploded perspective view of the coil component involved in the implementation method.

[0024] Figure 3 This is a front view of the coil component involved in the implementation method.

[0025] Figure 4 This is a top view of the coil component involved in the embodiment.

[0026] Figure 5 This is a bottom view of the coil component involved in the implementation method.

[0027] Figure 6 It is along Figure 4 A cross-sectional view of line AA in the diagram.

[0028] Figure 7 The cover member shown in the embodiment is along Figure 4 A cross-sectional view of line AA in the diagram.

[0029] Figure 8 This is a perspective view showing the state after the cover component and the coil frame of the embodiment are assembled together.

[0030] Figure 9 Images (a), (b), and (c) show the coil frame portion of the embodiment, wherein... Figure 9 In the diagram, (a) is a 3D view, (b) is a front view, and (c) is a top view.

[0031] (Symbol Explanation)

[0032] 10 magnetic cores

[0033] 11a First magnetic core component

[0034] 11b Second magnetic core component

[0035] 12 Base

[0036] 12c inner surface

[0037] 12d outer surface

[0038] 13 Outer foot

[0039] 15 cores

[0040] 30 Coil frame section

[0041] 31. Cylinder section

[0042] 32 Upper wall

[0043] 33 Lower wall portion

[0044] 34 Anterior wall portion

[0045] 35 Rear wall portion

[0046] 36 Through holes

[0047] 40 Flange portion

[0048] 41 First flange portion

[0049] 42 Second flange portion

[0050] 45 First side view

[0051] 45a Notch-shaped part

[0052] 45b Guiding section

[0053] 46 convex part

[0054] 46a Stepped surface

[0055] 46b end

[0056] 47 recess

[0057] 48 Second side view

[0058] 49. Reference Surface

[0059] 50 Terminal holding section

[0060] 52 First terminal holding part

[0061] 55 Second terminal holding part

[0062] 59. Protruding part

[0063] 60 terminal section

[0064] 61 First terminal section

[0065] 62 Second terminal section

[0066] 62b Foot

[0067] 63 Third terminal section

[0068] 64 Fourth terminal section

[0069] 64a Connecting part

[0070] 64b Foot

[0071] 65 external terminals

[0072] 70 coil

[0073] 71 windings

[0074] 72 Winding section

[0075] 80 Cover Components

[0076] 81 Top face

[0077] 81a Protrusion

[0078] 82. Lateral peripheral wall portion (first lateral peripheral wall portion)

[0079] 82a First wall section

[0080] 821a Main Department

[0081] 82b Second wall section

[0082] 82c Third wall section

[0083] 82d Fourth wall section

[0084] 83 Spring sheet

[0085] 83a One end

[0086] Part of 83b

[0087] 831b inner surface

[0088] 83c front end

[0089] 831c inner surface

[0090] 832 Middle Section

[0091] 833 Foremost part

[0092] 84a Contact Section

[0093] 84b Entry Section

[0094] 85 Second lateral peripheral wall portion

[0095] 85a First wall section

[0096] 85b Second wall section

[0097] 85c Third wall section

[0098] 85d Fourth wall section

[0099] 86 Flange portion

[0100] 86a upper surface

[0101] 88a Through Hole

[0102] 88b Through Hole

[0103] 90 First fixing belt

[0104] 95 Second fixing belt

[0105] 100 Coil Components Detailed Implementation

[0106] The following is based on Figures 1-9 Section (c) describes the embodiments of the present invention.

[0107] It should be noted that, in Figure 1 and Figure 3 The illustrations of the first fixing belt 90 and the second fixing belt 95 are omitted in the text. Figure 8 The image shows the state after the cover component 80 and the coil frame part 30 are assembled together.

[0108] In addition, in all the accompanying drawings, the same symbols are used to label the same structural elements, and their descriptions are omitted as appropriate.

[0109] like Figures 1-9 As shown in any of the figures in (c), the coil component 100 of this embodiment includes: a coil frame portion 30, a magnetic core 10 inserted into the coil frame portion 30, a coil 70 wound on the coil frame portion 30, and a cover member 80 that covers the coil frame portion 30 by being sleeved on the outside of the coil frame portion 30.

[0110] like Figure 3 and Figure 6 As shown, at least one of the cover member 80 and the coil frame portion 30 has a spring sheet 83 that elastically applies force to the other. The spring sheet 83 has a single-support structure, that is, one end 83a of the spring sheet 83 in the outward insertion direction is supported when the cover member 80 is sleeved on the outside of the coil frame portion 30, and extends from the one end 83a toward the front end 83c of the spring sheet 83.

[0111] Under the influence of the force of the spring sheet 83, in a first direction parallel to the mounting surface, at least one of the cover member 80 and the coil frame portion 30 elastically applies force to the other (the other of the cover member 80 and the coil frame portion 30), and at least one of the cover member 80 and the coil frame portion 30 has: a protrusion 46 and a recess 47 that is recessed towards the first direction side compared to the protrusion 46.

[0112] The recess 47 is adjacent to the protrusion 46 on the extending direction side of the spring sheet 83. The front end portion 83c of the spring sheet 83 has: a contact portion 84a that contacts the protrusion 46 and applies force to the protrusion 46, and an entry portion 84b that is located on the front end side and enters the recess 47 compared to the contact portion 84a.

[0113] The spring sheet 83 is bent such that the inlet 84b is located on the first direction side relative to the contact portion 84a, and at the contact portion 84a and the protrusion 46, a force is generated by the cover member 80 pushing the coil skeleton portion 30 upward.

[0114] In this embodiment, as an example, Figure 6 The left direction is set as the first direction, and the opposite direction (the right direction) is set as the second direction.

[0115] However, in this invention, the first direction and the second direction are not limited to the examples described above, and can be appropriately set according to the structure of each component constituting the coil component 100, or the desired positional relationship between the components.

[0116] In addition, applying force in the first direction means that when the force is decomposed into vectors in the three directions of the first direction, the direction parallel to the mounting surface and perpendicular to the first direction, and the direction perpendicular to the mounting surface, the component of the first direction is the largest among these three directions.

[0117] Furthermore, the convex portion 46 is the portion that protrudes in a second direction relative to the concave portion 47. In other words, the concave portion 47 is the portion that is recessed in a first direction relative to the convex portion 46.

[0118] According to this embodiment, in the first direction, at least one of the cover member 80 and the coil frame portion 30 elastically applies force to the other. Therefore, even if there is a manufacturing deviation in the dimensions of either or both of the cover member 80 and the coil frame portion 30 in the first and second directions (left-right directions), since the cover member 80 and the coil frame portion 30 can be positioned relative to each other in the first and second directions, positional misalignment between the cover member 80 and the coil frame portion 30 in the first and second directions can be suppressed. Furthermore, by elastically deforming at least one of the cover member 80 or the coil frame portion 30 according to the aforementioned manufacturing deviation, the manufacturing deviation can be absorbed.

[0119] Furthermore, according to this embodiment, the spring sheet 83 is bent such that the inlet 84b is located further to the first direction side than the contact portion 84a, and at the contact point between the contact portion 84a and the protrusion 46, a force is generated that pushes the coil frame portion 30 upward by the cover member 80. As a result, the displacement of the cover member 80 relative to the coil frame portion 30 is restricted. In other words, the downward displacement of the coil frame portion 30 relative to the cover member 80 can be restricted. Therefore, the coil frame portion 30 can be prevented from detaching from the cover member 80. Additionally, wobbling of the cover member 80 relative to the coil frame portion 30 in the vertical direction can be suppressed.

[0120] Thus, according to this embodiment, the desired positional relationship between the cover member 80 and the coil frame portion 30 can be easily achieved.

[0121] Furthermore, according to this embodiment, by fitting the cover member 80 onto the outside of the coil frame portion 30, the cover member 80 and the coil frame portion 30 can be positioned relative to each other in the first and second directions without using a dedicated jig, and the coil frame portion 30 can be prevented from detaching from the cover member 80. Therefore, the ease of manufacturing the coil component 100 can be improved.

[0122] Furthermore, according to this embodiment, the spring sheet 83 has a single-support structure in which one end of the spring sheet 83 is supported in the outward insertion direction when the cover member 80 is fitted outside the coil frame portion 30. Therefore, the spring sheet 83 can elastically deform with a sufficient amount of displacement. Thus, even if there are manufacturing deviations in the dimensions of either or both of the coil frame portion 30 and the cover member 80 in the first and second directions, these deviations can be absorbed more effectively by elastically deforming the spring sheet 83 according to these deviations. Therefore, the cover member 80 can apply appropriate force to the coil frame portion 30 regardless of these manufacturing deviations.

[0123] Furthermore, according to this embodiment, the spring sheet 83, the protrusion 46, and the recess 47 can not only restrict the positional offset between the cover member 80 and the coil frame portion 30 in the left-right direction (first direction and second direction), but also restrict the positional offset between the cover member 80 and the coil frame portion 30 in the up-down direction. Therefore, it is not necessary to provide other position offset limiting structures for restricting positional offset in the up-down direction. Correspondingly, the design freedom of the coil component 100 can be ensured.

[0124] In the following description, the vertical direction will be referred to as the Z-direction. The lower side (below) refers to the area where the terminal portion 60 (described later) is located (see reference). Figure 1 The side of the coil component 100 is the mounting surface side. However, the positional relationship (especially the vertical positional relationship) of the various parts of the coil component 100 during manufacturing or use is not limited to the positional relationship described in this specification.

[0125] The axial direction of coil 70 extends in a direction perpendicular to the Z direction. The axial direction of coil 70 is referred to as the X direction, one side in the X direction is called the right side (right side), and the other side is called the left side (left side).

[0126] In addition, the direction perpendicular to both the X and Z directions is called the Y direction, one side of the Y direction is called the front side (front edge), and the other side is called the back side (back edge).

[0127] These directions are already illustrated in the various diagrams.

[0128] Furthermore, in the X direction, the side where the center of coil 70 is located axially along the axis is called the inner side (internal side), and the side opposite to the inner side is called the outer side (external side). Similarly, in the Y direction, the side where the center of coil 70 is located in the front-back direction is called the inner side (internal side), and the side opposite to the inner side is called the outer side (external side).

[0129] In addition, the direction perpendicular to the Z-direction is called the horizontal direction, and the direction parallel to the Z-direction is called the vertical direction.

[0130] like Figure 2 As shown, in this embodiment, for example, the magnetic core 10 has a pair of magnetic core members, namely a first magnetic core member 11a disposed on the right and a second magnetic core member 11b disposed on the left.

[0131] For example, the first magnetic core component 11a and the second magnetic core component 11b are respectively so-called E-type magnetic cores, whose shape when viewed from above is E-shaped (see reference). Figure 4 ).

[0132] More specifically, the first magnetic core member 11a includes: a base 12 extending in a front-rear direction, a pair of outer legs 13 protruding to the left from both ends of the base 12, and a core 15 protruding to the left from the middle of the base 12. It should be noted that the protrusion directions of the outer legs 13 from the base 12 and the protrusion directions of the core 15 from the base 12 are the same as the axial direction of the coil 70.

[0133] For example, the base 12 is formed as a rectangular prism with a longer front-to-back direction and a rectangular cross-sectional shape perpendicular to the axial direction. In the base 12, two of the four surfaces arranged around the axis are a horizontal upper surface and a lower surface, respectively. One of the remaining two surfaces (hereinafter referred to as the inner surface 12c) faces the coil frame portion 30, and the other surface (hereinafter referred to as the outer surface 12d) faces the side opposite to the coil frame portion 30. In this embodiment, the inner surface 12c of the base 12 constitutes the inner surface of the first magnetic core member 11a, and the outer surface 12d of the base 12 constitutes the outer surface of the first magnetic core member 11a.

[0134] For example, each of the outer legs 13 and the core 15 is formed as a rectangular prism with a longer length in the left-right direction and a rectangular cross-sectional shape perpendicular to the axial direction. More specifically, for example, in the outer legs 13 and the core 15, two of the four surfaces arranged around the axis are a horizontal upper surface and a lower surface, and one of the remaining two surfaces faces the front side and the other faces the rear side.

[0135] For example, the base 12, each of the outer legs 13, and the core 15 are set to have the same vertical dimensions. In the first magnetic core member 11a, the upper surface of the base 12, the upper surface of the outer legs 13, and the upper surface of the core 15 are arranged on the same plane. That is, the entire upper surface of the first magnetic core member 11a is formed flat and horizontally arranged. Similarly, in the first magnetic core member 11a, the lower surface of the base 12, the lower surface of the outer legs 13, and the lower surface of the core 15 are arranged on the same plane. That is, the entire lower surface of the first magnetic core member 11a is formed flat and horizontally arranged.

[0136] For example, the second magnetic core member 11b is formed with the same shape as the first magnetic core member 11a. That is, the second magnetic core member 11b has a base 12, a pair of pairs of legs 13, and a core 15. The base 12 has an upper surface, a lower surface, an inner surface 12c, and an outer surface 12d.

[0137] The second magnetic core component 11b is arranged symmetrically with the first magnetic core component 11a.

[0138] The front end faces of the outer legs 13 of the first magnetic core member 11a and the second magnetic core member 11b are formed in a flat direction and become vertical surfaces perpendicular to the axis of the coil 70.

[0139] Similarly, the front end face of each core portion 15 of the first magnetic core member 11a and the second magnetic core member 11b is formed in a flat direction and becomes a vertical surface perpendicular to the axis of the coil 70.

[0140] like Figure 4 As shown, the inner surface 12c and outer surface 12d of the base 12 are also formed flat and become vertical planes perpendicular to the axis of the coil 70. The inner surface of the first magnetic core member 11a and the inner surface of the second magnetic core member 11b are opposite to each other, and the outer surface of the first magnetic core member 11a and the outer surface of the second magnetic core member 11b face opposite directions.

[0141] For example, the coil frame portion 30 includes a cylindrical portion 31 and a pair of flange portions 40 respectively disposed at both ends of the cylindrical portion 31 in the axial direction.

[0142] The cylindrical portion 31 is formed into a square cylindrical shape with a through hole 36 extending through the cylindrical portion 31 along the axial direction. The axial direction of the cylindrical portion 31 (the axial direction of the through hole 36) is in the left-right direction, which is consistent with the axial direction of the coil 70.

[0143] For example, such as Figure 9 As shown in (b) and (c), the cylindrical portion 31 is configured to include: an upper wall portion 32 and a lower wall portion 33 arranged horizontally, and a front wall portion 34 and a rear wall portion 35 arranged vertically.

[0144] For example, the internal space of the through hole 36 is formed into a square column shape. The bottom surface (inner circumferential bottom surface) and the top surface of the inner circumferential surface of the through hole 36 are horizontal surfaces, and the front and rear surfaces of the inner circumferential surface of the through hole 36 are vertical surfaces.

[0145] like Figure 9 As shown in (a), (b) and (c), for example, the coil frame portion 30 has a pair of flange portions 40, namely a first flange portion 41 disposed on the right side and a second flange portion 42 disposed on the left side.

[0146] For example, the first flange portion 41 and the second flange portion 42 extend from both ends of the cylindrical portion 31 toward the outer periphery of the cylindrical portion 31.

[0147] More specifically, for example, the first flange portion 41 is formed as a flat plate perpendicular to the axial direction of the cylindrical portion 31. For example, the second flange portion 42 is formed as a flat cuboid shape with left and right dimensions smaller than its top and bottom dimensions and front and back dimensions, and the right and left faces are perpendicular to the first direction.

[0148] The left-right dimension (thickness dimension) of the first flange portion 41 is smaller than the left-right dimension (thickness dimension) of the second flange portion 42. The front-back dimension of the first flange portion 41 is equal to the front-back dimension of the second flange portion 42, and the vertical dimension of the first flange portion 41 is equal to the vertical dimension of the second flange portion 42.

[0149] In addition, the front end face of the first flange portion 41 and the front surface of the second flange portion 42 are arranged on the same plane, and the rear end face of the first flange portion 41 and the rear surface of the second flange portion 42 are arranged on the same plane.

[0150] Furthermore, such as Figure 2 As shown, the coil frame portion 30 has a terminal holding portion 50 and a plurality of terminal portions 60 held on the terminal holding portion 50. The winding 71 constituting the coil 70 is wound on the coil frame portion 30.

[0151] In more detail, such as Figure 9 As shown in (a), (b) and (c), the coil frame portion 30, as a terminal holding portion 50, includes a first terminal holding portion 52 disposed on the right side and a second terminal holding portion 55 disposed on the left side.

[0152] For example, the first terminal holding portion 52 is formed as a flat, rectangular column that is longer in the front-to-back direction and has a left-to-right dimension smaller than its top-to-bottom dimension.

[0153] For example, the second terminal holding portion 55 is formed as a flat plate shape that is longer in the front-to-back direction and has a vertical dimension smaller than its horizontal dimension.

[0154] Here, for example, on the bottom surface of the second terminal holding portion 55, a protrusion 59 hanging down from its right edge is formed (see reference). Figure 1 and Figure 3 The protrusion 59 is formed into a flat plate with its surface facing left and right. The right side of the protrusion 59 and the right side of the second terminal holding part 55 are disposed on the same plane.

[0155] The first terminal holding portion 52 extends from the lower edge of the first flange portion 41 toward the right and in the front-back direction. The second terminal holding portion 55 extends from the lower edge of the second flange portion 42 toward the left and in the front-back direction.

[0156] In this embodiment, the left-right dimension of the first terminal holding portion 52 is smaller than the left-right dimension of the second terminal holding portion 55. The vertical dimension of the first terminal holding portion 52 is larger than the vertical dimension of the second terminal holding portion 55 (excluding the portion after the protrusion 59). The front-back dimension of the first terminal holding portion 52 is equal to the front-back dimension of the second terminal holding portion 55. In addition, the height position of the lower end face of the protrusion 59 is the same as the height position of the lower end face of the first terminal holding portion 52.

[0157] There is no particular limitation on the dimensional relationship between the first terminal holding part 52 and the second terminal holding part 55, and the first terminal holding part 52 and the second terminal holding part 55 may also be formed to have the same size.

[0158] The upper surfaces of the first terminal holding portion 52 and the second terminal holding portion 55 are respectively formed flat and arranged horizontally.

[0159] For example, the first terminal holding portion 52 holds the first terminal portion 61, the second terminal portion 62, and the third terminal portion 63, which will be described later. For example, the second terminal holding portion 55 holds the fourth terminal portion 64, which will be described later.

[0160] like Figure 4 and Figure 5 As shown, in this embodiment, for example, the coil component 100 has a first terminal portion 61, a second terminal portion 62, a third terminal portion 63, and a fourth terminal portion 64 as a terminal portion 60.

[0161] The first terminal portion 61 to the third terminal portion 63 are arranged in the first terminal holding portion 52 in the following order: from the front, the first terminal portion 61, the second terminal portion 62, and the third terminal portion 63 are arranged sequentially in the front-to-back direction. The fourth terminal portion 64 is disposed in the second terminal holding portion 55.

[0162] For example, the first terminal portion 61 is constructed by bending a long plate-shaped metal member.

[0163] like Figure 2 and Figure 3 As shown, the first terminal portion 61 has a lower end portion that protrudes outward from the first terminal holding portion 52, and an upper end portion and a middle portion (not shown) embedded (inlaid) in the first terminal holding portion 52. Furthermore, the lower end portion of the first terminal portion 61 is an external terminal 65 that is connected to the outside when the coil component 100 is installed.

[0164] More specifically, the first terminal portion 61 is folded back inside the first terminal holding portion 52, and when viewed from the front, the shape of the first terminal portion 61 is formed such that the U-shape is laid sideways.

[0165] The outer terminal 65 of the first terminal portion 61 protrudes downward from the bottom surface of the first terminal holding portion 52 and extends further to the right. That is, the extending direction of the front end of the outer terminal 65 of the first terminal portion 61 is consistent with the second direction.

[0166] For example, the third terminal portion 63 is formed with the same shape as the first terminal portion 61. Therefore, the third terminal portion 63 has an external terminal 65 exposed from the first terminal holding portion 52 toward the outside, and an upper end portion and a middle portion (not shown) embedded in the first terminal holding portion 52.

[0167] For example, the second terminal portion 62 is constructed by bending a long, downward-forked plate-shaped metal member.

[0168] like Figure 2 and Figure 6 As shown, the second terminal portion 62 has: a pair of front and rear legs 62b that are exposed to the outside from the bottom surface of the first terminal holding portion 52, and a connecting portion (not shown) that is embedded in the first terminal holding portion 52 and connects the pair of legs 62b and the extension portion 62c.

[0169] The pair of feet 62b are external terminals 65 that connect to the outside when the coil component 100 is installed.

[0170] The second terminal portion 62 is folded back inside the first terminal holding portion 52. When viewed from the side and top, the shape of the second terminal portion 62 is formed such that the U-shape is upside down and it opens downwards.

[0171] Each external terminal 65 of the second terminal portion 62 protrudes downward from the bottom surface of the first terminal holding portion 52 and then extends further to the right. That is, the extending direction of the front end of the external terminal 65 of the second terminal portion 62 is consistent with the second direction.

[0172] For example, the length of each external terminal 65 of the first terminal portion 61 to the third terminal portion 63 in the left-right direction is set to be equal to each other.

[0173] In addition, the thickness of the plate-shaped metal members constituting the first terminal portion 61 to the third terminal portion 63 is set to be equal to each other.

[0174] For example, the fourth terminal portion 64 is constructed by bending a long, downward-forked plate-shaped metal member.

[0175] like Figure 3 and Figure 6 As shown, the fourth terminal portion 64 has: a pair of front and rear legs 64b that are exposed to the outside from the bottom surface of the second terminal holding portion 55, and a connecting portion 64a that is embedded in the second terminal holding portion 55 and the second flange portion 42 and connects the pair of legs 64b to each other.

[0176] The pair of feet 64b are external terminals 65 that connect to the outside when the coil component 100 is installed.

[0177] The fourth terminal portion 64 is folded back inside the second terminal holding portion 55 and the second flange portion 42. When viewed from the side and above, the shape of the fourth terminal portion 64 is formed such that the U-shape is upside down and it opens downward.

[0178] like Figure 9 As shown in (a) and (c), for example, each external terminal 65 protrudes downward from the bottom surface of the second terminal holding portion 55 and then extends further to the left. That is, the extending direction of the front end of the external terminal 65 of the fourth terminal portion 64 is consistent with the first direction.

[0179] For example, the length dimensions of each external terminal 65 of the fourth terminal section 64 in the left-right direction are set to be equal to each other.

[0180] In addition, for example, the thickness of the plate-shaped metal member constituting the fourth terminal portion 64 is greater than the thickness of the plate-shaped metal members constituting the first terminal portion 61 to the third terminal portion 63.

[0181] like Figure 2 and Figure 4 As shown, for example, coil component 100 has a first coil and a second coil as coil 70.

[0182] The first coil and the second coil are each composed of windings 71. Each winding 71 of the coil 70 is wound around the cylindrical portion 31 of the coil frame portion 30. The windings 71 wound around the cylindrical portion 31 constitute the winding portion 72 (see reference). Figure 2 Each winding 71 has its two ends electrically connected to a corresponding terminal portion 60. As an example, each winding 71 has its two ends pulled out from the winding portion 72 and secured to the corresponding terminal portion 60, thereby becoming electrically connected to that terminal portion 60. It should be noted that illustrations of the portions of the windings 71 pulled out from the winding portion 72 and the securing portions of the windings 71 secured to the terminal portion 60 are omitted. The securing portions for each winding 71 can be the portion of the terminal portion 60 protruding from the terminal holding portion 50 (for example, a portion protruding from the terminal holding portion 50 other than the L-shaped portion including the external terminal 65, or the portion of the terminal portion 60 embedded between the coil frame portion 30 and the external terminal 65), or the portion of the terminal portion 60 embedded within the coil frame portion 30.

[0183] It should be noted that the end of the winding 71 bundled on the terminal portion 60 and the portion extending from the winding portion 72 toward the terminal portion 60 are omitted from the figures.

[0184] like Figure 2 , Figure 4 , Figure 6 as well as Figure 8 As shown, the cover member 80 has a side peripheral wall portion 82 comprising a first wall portion 82a and a second wall portion 82b that are opposed to each other. More specifically, for example, the cover member 80 has a rectangular cylindrical side peripheral wall portion 82 (first side peripheral wall portion 82) comprising a first wall portion 82a, a second wall portion 82b, a third wall portion 82c and a fourth wall portion 82d.

[0185] Additionally, the cover member 80 has a top portion 81 that blocks the upper end of the side peripheral wall portion 82 (see reference). Figure 2 (etc.). Furthermore, such as Figure 2 , Figure 6 as well as Figure 7 As shown, for example, the cover member 80 faces the lower opening.

[0186] The first wall portion 82a to the fourth wall portion 82d are each formed into a flat plate and arranged vertically.

[0187] like Figure 4 and Figure 6 As shown, for example, the first wall portion 82a and the second wall portion 82b are opposite each other in the left-right direction (first direction and second direction), and the third wall portion 82c and the fourth wall portion 82d are opposite each other in the front-back direction. More specifically, for example, each panel (wall surface) of the first wall portion 82a and the second wall portion 82b faces the left-right direction. For example, each panel (wall surface) of the third wall portion 82c and the fourth wall portion 82d faces the front-back direction.

[0188] For example, the top surface 81 is formed as a flat plate and is horizontally arranged. Because the cover member 80 has the top surface 81, when the coil member 100 is mounted on the substrate, the top surface 81 can be adsorbed by a mounter, thereby making it easy to mount the coil member 100 on the substrate.

[0189] However, the top surface 81 may also be formed unevenly. Alternatively, the cover member 80 may be formed without the top surface 81 (for example, formed with openings facing upwards and downwards respectively).

[0190] For example, the cover member 80 has a protrusion 81a that protrudes from the rear of the left side of the top part 81 toward the left (see reference). Figure 1 and Figure 3 The orientation of the cover member 80 can be easily determined based on the protrusion 81a.

[0191] As described above, for example, the cover member 80 is configured to cover the coil skeleton portion 30. More specifically, as... Figure 4As shown, for example, the first wall portion 82a covers the right side of the coil frame portion 30, the second wall portion 82b covers the left side of the coil frame portion 30, the third wall portion 82c covers the front side of the coil frame portion 30, and the fourth wall portion 82d covers the rear side of the coil frame portion 30. Additionally, as... Figure 3 As shown, the top surface 81 covers the top of the coil frame portion 30.

[0192] Thus, since the cover member 80 covers the coil skeleton part 30, sufficient pressure resistance of the coil part 100 can be ensured.

[0193] In addition, such as Figure 2 and Figure 3 As shown, for example, a through hole 88a is formed in the first wall portion 82a, extending through the first wall portion 82a in the left-right direction. Similarly, for example, a through hole 88b is formed in the second wall portion 82b, extending through the second wall portion 82b in the left-right direction. The through holes 88a and 88b are arranged at positions opposite to each other.

[0194] For example, the through hole 88b of the second wall portion 82b is formed into a rectangular shape that is approximately the same as the through hole 36 of the coil frame portion 30 when viewed from the axial direction. On the other hand, for example, the through hole 88a of the first wall portion 82a is formed into a generally rectangular shape that is longer in the front-back direction (see reference). Figure 8 The upper and lower edges of the through hole 88a are arranged horizontally. Similarly, the upper and lower edges of the through hole 88b are arranged horizontally.

[0195] Furthermore, in this embodiment, the cover member 80 has a flange portion 86 extending outward from the lower end of the side peripheral wall portion 82. More specifically, as Figure 6 As shown, the cover member 80 has: a flange portion 86 extending from the lower end of the side peripheral wall portion 82 toward its periphery (in the horizontal direction), and a second side peripheral wall portion 85 hanging down from the periphery of the flange portion 86 and surrounding the terminal holding portion 50.

[0196] For example, the flange portion 86 is formed as a flat plate and is horizontally arranged. The upper surface 86a and the lower surface of the flange portion 86 are both formed as substantially flat horizontal surfaces. However, for example, a downwardly projecting protrusion may be formed on the lower surface of the flange portion 86.

[0197] like Figure 4 As shown, for example, the second side peripheral wall portion 85 is formed into a rectangular shape when viewed from above, and the internal space of the second side peripheral wall portion 85 is formed into a cuboid shape. The lower end of the second side peripheral wall portion 85 opens downwards. In this embodiment, the opening at the lower end of the second side peripheral wall portion 85 constitutes the opening of the cover member 80.

[0198] The second peripheral wall portion 85 has: a first wall portion 85a surrounding the right side of the terminal holding portion 50, a second wall portion 85b surrounding the left side of the terminal holding portion 50, a third wall portion 85c surrounding the front side of the terminal holding portion 50, and a fourth wall portion 85d surrounding the rear side of the terminal holding portion 50 (see reference). Figure 4 and Figure 5 ).

[0199] For example, the first wall portion 85a to the fourth wall portion 85d are each formed into a flat plate and arranged vertically.

[0200] like Figure 4 As shown, the surfaces (walls) of the first wall portion 85a and the second wall portion 85b face left and right directions, respectively. The surfaces (walls) of the third wall portion 85c and the fourth wall portion 85d face front and back directions, respectively.

[0201] In addition, such as Figure 6 As shown, in the flange portion 86, the left-right dimension of the portion extending to the right is greater than the left-right dimension of the portion extending to the left. More specifically, in the flange portion 86, the left-right dimension of the portion extending to the right is greater than the left-right dimension of the base 12 of the first magnetic core member 11a, while the left-right dimension of the portion extending to the left is set to be approximately equal to or slightly larger than the left-right dimension of the base 12 of the second magnetic core member 11b.

[0202] As described above, for example, the cover member 80 opens downwards. Furthermore, by placing the cover member 80 over the coil frame portion 30 from above and pressing the cover member 80 downwards relative to the coil frame portion 30, the cover member 80 is thus fitted over the outside of the coil frame portion 30. Therefore, in this embodiment, the direction in which the cover member 80 is fitted over the outside of the coil frame portion 30 (hereinafter, sometimes simply referred to as the "external insertion direction") is the vertical direction.

[0203] In addition, the through holes 88a and 88b of the cover component 80 and the through hole 36 of the coil frame portion 30 are arranged coaxially with each other.

[0204] like Figure 4 and Figure 5 As shown, preferably, the inner surface (left side) of the first wall portion 82a is configured to be parallel to the right side of the first flange portion 41. Preferably, the inner surface (right side) of the second wall portion 82b is configured to be parallel to the left side of the second flange portion 42. Preferably, the inner surface of the third wall portion 82c is configured to be parallel to the front end face of the first flange portion 41 and the front end face of the second flange portion 42. Preferably, the inner surface of the fourth wall portion 82d is configured to be parallel to the rear end face of the first flange portion 41 and the rear end face of the second flange portion 42.

[0205] In addition, such as Figure 6 As shown, for example, the inner surface (lower surface) of the top surface 81 is positioned close to the upper end surface of the first flange 41 and the upper end surface of the second flange 42. However, it is also possible to configure the inner surface of the top surface 81 to be in surface contact with the upper end surface of the first flange 41 and the upper end surface of the second flange 42.

[0206] like Figure 4 and Figure 6 As shown, preferably, the inner surface of the first wall portion 85a is configured to be parallel to the right side of the first terminal holding portion 52. Preferably, the inner surface of the second wall portion 85b is configured to be parallel to the left side of the second terminal holding portion 55. Preferably, the inner surface of the third wall portion 85c is configured to be parallel to the front surface of the first terminal holding portion 52 and the front surface of the second terminal holding portion 55, respectively. Preferably, the inner surface of the fourth wall portion 85d is configured to be parallel to the rear surface of the first terminal holding portion 52 and the rear surface of the second terminal holding portion 55, respectively.

[0207] Alternatively, preferably, the lower surface of the flange portion 86 is in surface contact with the coil bobbin portion 30 (e.g., by crimping).

[0208] In more detail, such as Figure 6 As shown, for example, preferably, the lower surface of the flange portion 86 of the cover member 80 extending to the right from the first wall portion 82a is pressed against the upper surface of the first terminal holding portion 52 of the coil frame portion 30. For example, preferably, the lower surface of the flange portion 86 extending to the left from the second wall portion 82b is pressed against the upper surface of the second terminal holding portion 55 of the coil frame portion 30. In this way, the wobbling of the cover member 80 relative to the coil frame portion 30 in the vertical direction can be more reliably suppressed.

[0209] In addition, such as Figure 6 As shown, preferably, the protrusion 46 is positioned above the upper surface of the first terminal holding portion 52.

[0210] The core 15 of the first magnetic core member 11a is inserted into the through hole 36 of the coil frame part 30 through the through hole 88a of the first wall part 82a (right side of the cover member 80) (see reference). Figure 1 Similarly, the core 15 of the second core member 11b is inserted into the through hole 36 of the coil frame part 30 through the through hole 88b of the second wall part 82b (left side of the cover member 80).

[0211] The front end faces of the core portion 15 of the first magnetic core component 11a and the core portion 15 of the second magnetic core component 11b are either abutted or close to each other inside the through hole 36. That is, the front end faces of the core portion 15 of the first magnetic core component 11a and the core portion 15 of the second magnetic core component 11b can be in surface contact with each other or can be positioned opposite each other in a close manner.

[0212] A closed magnetic circuit is formed by the first magnetic core component 11a and the second magnetic core component 11b.

[0213] It should be noted that, as Figure 4 As shown, the coil 70 is wound on the coil frame portion 30, and the core portion 15 is inserted into the coil frame portion 30. Therefore, the coil 70 is wound around the magnetic core 10.

[0214] like Figure 4 As shown, the front and rear outer feet 13 of the first magnetic core member 11a are disposed on the outer side of the side peripheral wall portion 82, and are disposed along the outer surfaces of the third wall portion 82c and the fourth wall portion 82d, respectively. The base portion 12 of the first magnetic core member 11a is disposed on the outer side of the side peripheral wall portion 82, and the inner side surface 12c of the base portion 12 is disposed facing the outer surface of the first wall portion 82a.

[0215] Similarly, the front and rear outer feet 13 of the second magnetic core member 11b are disposed on the outer side of the side peripheral wall portion 82, and are disposed along the outer surfaces of the third wall portion 82c and the fourth wall portion 82d, respectively. The base portion 12 of the second magnetic core member 11b is disposed on the outer side of the side peripheral wall portion 82, and the inner surface 12c of the base portion 12 is disposed facing or in contact with the outer surface of the second wall portion 82b.

[0216] In more detail, such as Figure 4 As shown, a gap is formed between the inner surface 12c of the base 12 of the first magnetic core member 11a and the outer surface of the first wall portion 82a. On the other hand, a gap may or may not be formed between the inner surface 12c of the base 12 of the second magnetic core member 11b and the outer surface of the second wall portion 82b.

[0217] The front end faces of the outer legs 13 on the front side of the first magnetic core member 11a and the outer legs 13 on the front side of the second magnetic core member 11b are either abutting or close to each other. That is, the front end faces of the outer legs 13 on the front side of the first magnetic core member 11a and the outer legs 13 on the front side of the second magnetic core member 11b can be in face-to-face contact or face-to-face. Similarly, the front end faces of the outer legs 13 on the rear side of the first magnetic core member 11a and the outer legs 13 on the rear side of the second magnetic core member 11b are either abutting or close to each other.

[0218] The base 12 and outer foot 13 of the first magnetic core member 11a and the second magnetic core member 11b are disposed on the upper side of the flange portion 86, and are disposed along the upper surface 86a of the flange portion 86 (see reference). Figure 3 and Figure 6 ).

[0219] The lower surface of the core 15 is arranged along the inner peripheral bottom surface of the through hole 36 .

[0220] like Figure 3 As shown, the lower surfaces of the first magnetic core member 11a and the second magnetic core member 11b are arranged on the same plane relative to each other. Each lower surface of the first magnetic core member 11a and the second magnetic core member 11b is arranged along the upper surface 86a of the flange portion 86. The lower surfaces of the first magnetic core member 11a and the second magnetic core member 11b and the upper surface 86a of the flange portion 86 can be in surface contact with each other, or they can be positioned close to each other.

[0221] like Figure 4 and Figure 5 As shown, preferably, the outer surface 12d of the base 12 of the first magnetic core member 11a is disposed at a position further inward than the outer surface of the first wall portion 85a of the second peripheral wall portion 85, or disposed on the same plane as that outer surface. Preferably, the outer surface 12d of the base 12 of the second magnetic core member 11b is disposed at a position further inward than the outer surface of the second wall portion 85b of the second peripheral wall portion 85, or disposed on the same plane as that outer surface. Preferably, the outer surface of the outer foot portion 13 on the front side of the first magnetic core member 11a and the outer surface of the outer foot portion 13 on the front side of the second magnetic core member 11b are disposed at a position further inward than the outer surface of the third wall portion 85c of the second peripheral wall portion 85, or disposed on the same plane as that outer surface. Preferably, the outer surface of the rear outer leg portion 13 of the first magnetic core member 11a and the outer surface of the rear outer leg portion 13 of the second magnetic core member 11b are disposed at a position further inward than the outer surface of the fourth wall portion 85d of the second side peripheral wall portion 85, or disposed on the same plane as the outer surface.

[0222] Thus, in this embodiment, the magnetic core 10 is inserted into the coil frame portion 30 via the cover member 80. Therefore, by maintaining a good positional relationship between the coil frame portion 30 and the cover member 80, the positional relationship between the magnetic core 10 and the coil 70 can be maintained well, thereby achieving a more stable characteristic of the coil component 100.

[0223] In this embodiment, the coil component 100 includes a first retaining band 90 wound around the magnetic core 10 (see reference). Figure 4 and Figure 6The first fixing band 90 can effectively maintain the state in which the cores 15 of the first magnetic core component 11a and the second magnetic core component 11b are inserted into the through holes 36 of the coil frame portion 30.

[0224] In more detail, such as Figure 4 As shown, for example, the first fixing band 90 is wound along the outer surface 12d of the base 12 of the second magnetic core member 11b, the outer surface of the outer foot portion 13 on the front side of the second magnetic core member 11b, the outer surface of the outer foot portion 13 on the front side of the first magnetic core member 11a, the outer surface 12d of the base 12 of the first magnetic core member 11a, the outer surface of the outer foot portion 13 on the rear side of the first magnetic core member 11a, and the outer surface of the outer foot portion 13 on the rear side of the second magnetic core member 11b, and then wound again around the outer surface 12d of the base 12 of the second magnetic core member 11b.

[0225] In this embodiment, the first fixing strip 90 is formed into a strip that extends in one direction. For example, the first fixing strip 90 may be an adhesive strip with an adhesive layer pre-formed on, or it may be a strip-shaped member that is bonded with adhesive when assembling the coil component 100.

[0226] Furthermore, in this embodiment, the coil component 100 includes a second fixing band 95 (see reference) that is respectively wound around the magnetic core 10 and the cover component 80. Figure 4 and Figure 6 The magnetic core 10 can be securely fixed to the coil frame portion 30 and the cover member 80 by means of the second fixing band 95.

[0227] In more detail, such as Figure 4 and Figure 6 As shown, for example, the second fixing band 95 is wound around the entire circumference of the outer surface of the first fixing band 90, and the outer surface of the first wall portion 85a, the fourth wall portion 85d, the second wall portion 85b, and the third wall portion 85c of the second side peripheral wall portion 85.

[0228] In this embodiment, the second fixing strip 95 is formed into a strip that extends in one direction. For example, the second fixing strip 95 may be an adhesive strip with a pre-formed adhesive layer, or it may be a strip-shaped component that is bonded with adhesive when assembling the coil component 100. Figure 6 As shown, the upper part of the second fixing strap 95 is wrapped around the first fixing strap 90.

[0229] For example, the vertical dimensions of the first fixing band 90 are set to be approximately equal to the vertical dimensions of the magnetic core 10. For example, the vertical dimensions of the second fixing band 95 are greater than the vertical dimensions of the magnetic core 10 and less than the vertical dimensions of the cover member 80.

[0230] Here, as Figure 4 and Figure 5 As shown, preferably, when viewed from above, each external terminal 65 protrudes further outward than the outline of the portion of the coil component 100 excluding the external terminal 65. Furthermore, more preferably, the protrusion length of each external terminal 65 from the outline of the first terminal portion 61 to the third terminal portion 63 is greater than that of the coil component 100. Figure 4 The dimensions W1, W2, W3, and W4 shown are actually equal to each other, and the protrusion length of each external terminal 65 of the fourth terminal portion 64 from the outline is ( Figure 4 The dimensions W5 and W6 shown are actually equal to each other.

[0231] In this embodiment, as described above, at least one of the cover member 80 and the coil frame portion 30 elastically applies force to the other in the left-right direction, which is the extension direction of the front end of each external terminal 65. Therefore, the relative displacement of the cover member 80 relative to the coil frame portion 30 in the left-right direction is restricted. Thus, it is easy to achieve and maintain a state in which each external terminal 65 protrudes outward in a substantially equal manner relative to the outline.

[0232] Furthermore, when setting the left and right dimensions of each external terminal 65, it is not necessary to consider the relative displacement of the cover member 80 relative to the coil frame portion 30 in the left and right directions. Therefore, the overall external dimensions of the coil component 100, including the external terminals 65, can be set to be smaller.

[0233] In this embodiment, as an example, each dimension W1 to W4 is the length dimension in the left-right direction from the right side of the second fixing band 95 to the front end of each external terminal 65 of the first terminal portion 61 to the third terminal portion 63, and each dimension W4 and W5 is the length dimension in the left-right direction from the left side of the second fixing band 95 to the front end of each external terminal 65 of the fourth terminal portion 64.

[0234] The first magnetic core component 11a and the second magnetic core component 11b are integrally formed by magnetic materials.

[0235] For example, the entire coil frame 30 is integrally formed using an insulating material such as resin.

[0236] For example, the entire cover component 80 is integrally formed using an insulating material such as resin.

[0237] Here, as Figure 3 and Figure 8As shown, for example, one of the cover member 80 and the coil frame portion 30 has a spring sheet 83, and the other of the cover member 80 and the coil frame portion 30 has a protrusion 46 and a recess 47. In this embodiment, as an example, the cover member 80 has a spring sheet 83, and the coil frame portion 30 has a protrusion 46 and a recess 47.

[0238] More specifically, in this embodiment, the spring sheet 83 is pressed by the protrusion 46, thereby causing the spring sheet 83 to elastically deform in the second direction, and the spring sheet 83 elastically applies force to the coil frame portion 30 in the first direction.

[0239] In addition, such as Figure 3 As shown, for example, the coil frame portion 30 has a first side surface 45 disposed along the first wall portion 82a and a second side surface 48 disposed along the second wall portion 82b. Furthermore, at least one of the first wall portion 82a and the first side surface 45 has a spring sheet 83, and at least the other of the first wall portion 82a and the first side surface 45 has a protrusion 46 and a recess 47. Further, the second side surface 48 and the second wall portion 82b are respectively formed flat and in surface contact with each other.

[0240] More specifically, in this embodiment, the coil component 100 is configured such that when the cover component 80 is fitted over the outside of the coil frame portion 30, under the influence of the force of the spring sheet 83, at least one of the cover component 80 and the coil frame portion 30 elastically applies force to the other in a first direction (left side), and the second side surface 48 and the second wall portion 82b are in surface contact with each other. Therefore, the cover component 80 can be easily positioned relative to the coil frame portion 30 without using a special fixture. Furthermore, since the surface contact between the second side surface 48 and the second wall portion 82b can be well maintained, the relative displacement of the cover component 80 relative to the coil frame portion 30 about the Z-axis and about the Y-axis can also be limited. Therefore, it is easier to achieve and maintain the state where the dimensions W1 to W4 are equal and the dimensions W5 and W6 are equal.

[0241] Furthermore, when setting the dimensions of each external terminal 65 in the left-right direction, the above structure can be easily realized by taking into account the dimensions from the second side 48 to the front end face of each external terminal 65 from the first terminal portion 61 to the third terminal portion 63, and the dimensions from the second side 48 to the front end face of each external terminal 65 from the fourth terminal portion 64. Therefore, the overall external dimensions of the coil component 100, including the external terminals 65, can be set to be smaller.

[0242] More specifically, in this embodiment, the first wall portion 82a of the cover member 80 has a spring sheet 83, and the first side portion 45 of the coil frame portion 30 has a protrusion 46 and a recess 47.

[0243] like Figure 3 As shown, in this embodiment, the first side surface 45 is formed by the right side surface of the first flange portion 41. Additionally, for example, the second side surface 48 is formed by the left side surface of the second flange portion 42.

[0244] Therefore, the first side surface 45 (reference surface 49 described later) is perpendicular to the first direction (left-right direction in this embodiment). On the other hand, the second side surface 48 is perpendicular to the first direction (left-right direction in this embodiment). In addition, the first side surface 45 is configured to face the right, and the second side surface 48 is configured to face the left.

[0245] Furthermore, the first side surface 45 is positioned further to the left than the spring plate 83. The spring plate 83 applies force in the leftward direction (first direction), which aligns with the orientation of the second side surface 48. Therefore, the second side surface 48 is subjected to a force towards the left (second wall portion 82b side) via the spring plate 83, thereby ensuring good ground contact between the second side surface 48 and the inner surface of the second wall portion 82b.

[0246] like Figure 8 As shown, in this embodiment, the spring sheet 83 is formed from a portion of the first wall portion 82a. Furthermore, the spring sheet 83 extends downwards. In other words, the spring sheet 83 is formed extending downwards from the upper edge of the through hole 88a formed in the first wall portion 82a. That is, the upper end portion of the spring sheet 83 forms an end portion 83a, which is supported by the first wall portion 82a. More specifically, the upper end portion of the spring sheet 83 is a fixed end, and the lower end portion of the spring sheet 83 is a free end, which forms the front end portion 83c.

[0247] In addition, in the following description, the portion of the first wall portion 82a other than the spring sheet 83 will be referred to as the main portion 821a.

[0248] It should be noted that, in this embodiment, the spring sheet 83 only needs to be arranged at least along the first side surface 45. Therefore, for example, the spring sheet 83 may also be composed of a portion of the top surface portion 81 and a portion of the first wall portion 82a.

[0249] like Figure 1 , Figure 2 as well as Figure 8As shown, for example, the spring sheet 83 is formed at the front and rear positions of the first wall portion 82a, respectively, such that it clamps the through hole 36 of the coil frame portion 30 in the front-rear direction. In other words, the through hole 36 is disposed between the front spring sheet 83 and the rear spring sheet 83. In this way, by arranging the two spring sheets 83 relative to each other in the front-rear direction, i.e., in a direction perpendicular to the first direction, a structure in which the spring sheet 83 elastically applies force to the first side surface 45 more effectively in the first direction can be achieved. Furthermore, the front and rear sides of the coil frame portion 30 can be pressed more evenly, thus limiting the relative displacement of the cover member 80 relative to the coil frame portion 30 about the Z-axis and about the X-axis.

[0250] For example, each spring sheet 83 extends parallel to each other.

[0251] For example, each spring leaf 83 is formed as a generally flat plate-shaped leaf spring.

[0252] For example, when viewed from the first direction (left-right direction), each spring sheet 83 is formed into a roughly rectangular shape that is longer in the vertical direction. In addition, the thickness of the spring sheet 83 is formed to be approximately fixed regardless of its position in the vertical direction, and is set to be equal to the thickness of the first wall portion 82a.

[0253] In addition, such as Figure 6 As shown, the spring sheet 83 is bent convexly toward the second direction (right side) and also bent convexly toward the first direction (left side).

[0254] More specifically, for example, each spring sheet 83 includes an end portion 83a whose upper end is supported on a main portion 821a of a first wall portion 82a, and a front end portion 83c connected to the lower end of the end portion 83a. Moreover, the front end portion 83c includes an intermediate portion 832 connected to the end portion 83a, and a foremost end portion 833 connected to the intermediate portion 832.

[0255] One end portion 83a extends downward from the upper edge of the through hole 88a, and the middle portion 832 is bent such that as it moves downward from the lower edge of the one end portion 83a, its displacement to the left increases. The foremost end portion 833 extends downward from the lower edge of the middle portion 832.

[0256] More specifically, for example, the boundary between the outer surface of one end portion 83a and the outer surface of the middle portion 832 protrudes further outward than the outer surface of the first wall portion 82a. Additionally, for example, preferably, the boundary between the inner surface 831b of the middle portion 832 and the inner surface 831c of the foremost end portion 833 protrudes further inward than the inner surface of the first wall portion 82a.

[0257] In this embodiment, as described above, a gap is formed between the inner surface 12c of the base 12 of the first magnetic core member 11a and the outer surface of the first wall portion 82a (see reference). Figure 4 Therefore, even if a portion of the spring sheet 83 protrudes further outward (to the right) than the outer surface of the first wall portion 82a, it is possible to suppress the interference between the spring sheet 83 and the base portion 12.

[0258] For example, each spring sheet 83 is integrally formed with the cover member 80. Therefore, the spring sheet 83 is made of the same type of resin material as the resin material constituting the cover member 80.

[0259] However, for example, the spring sheet 83 can also be assembled into the cover member 80 by insert molding. In this case, the spring sheet 83 is made of metal. Alternatively, for example, the spring sheet 83 can be formed separately from the cover member 80 and fixed to the cover member 80 by adhesive or the like. In this case, the spring sheet 83 can be made of the same type of resin material as the resin material constituting the cover member 80, or it can be made of other materials such as metal.

[0260] In addition, such as Figure 1 and Figure 2 As shown, the protrusion 46 and the recess 47 are formed on the first side surface 45 (the right side surface of the first flange portion 41) at positions corresponding to a pair of spring sheets 83, respectively. Therefore, as an example, the protrusion 46 and the recess 47 are formed at the front and rear positions of the first side surface 45, respectively, to clamp the through hole 36. In other words, the through hole 36 is disposed between the front protrusion 46 and the recess 47 and the rear protrusion 46 and the recess 47.

[0261] Preferably, at least a portion of the protrusion 46 is inclined in the direction that increases the elastic restoring force of the spring sheet 83, as it moves outward toward the insertion direction when the cover member 80 is fitted onto the outside of the coil frame portion 30. For example... Figure 6 As shown, in this embodiment, as an example, the protrusion 46 is configured such that the amount of protrusion in the second direction (right side) increases as it moves downward.

[0262] Furthermore, preferably, the amount of protrusion of the protrusion 46 toward the spring sheet 83 side is greatest at the end 46b on the side of the recess 47.

[0263] Therefore, the force of the spring sheet 83 pressing the end 46b can be sufficiently ensured, thereby maintaining the state in which the front end 83c is locked in the end 46b. Therefore, the state in which the cover member 80 applies a force to the coil frame portion 30 so that it is oriented upwards can be well maintained, thus more reliably preventing the coil frame portion 30 from falling off the cover member 80.

[0264] In this embodiment, such as Figure 2 As shown, the first side surface 45, in addition to the protrusions 46 and the recesses 47, also has: a pair of front and rear guide portions 45b disposed on the upper side of each protrusion 46, and a reference surface 49 which is the portion of the first side surface 45 other than the protrusions 46, the recesses 47 and the guide portions 45b.

[0265] like Figure 3 , Figure 6 as well as Figure 9 As shown in (b), the recess 47 is recessed further to the left than the protrusion 46. More specifically, each recess 47 is disposed on the same plane as the reference surface 49 and is a flat surface perpendicular to the first direction. In addition, the lower edge of each recess 47 is connected to the left edge of the upper surface of the first terminal holding portion 52.

[0266] The protrusion 46 protrudes to the right (towards the first wall portion 82a) from the recess 47. More specifically, for example, the protrusion 46 has an inclined surface that slopes to the right as it moves downward, and a stepped surface 46a that serves as the boundary with the recess 47. In this embodiment, the lower edge of the inclined surface of the protrusion 46 becomes the end portion 46b. Furthermore, the stepped surface 46a is disposed between the end portion 46b and the upper edge of the recess 47.

[0267] The upper edge of each protrusion 46 is connected to the lower edge of its corresponding guide 45b, and the left edge of the stepped surface 46a is connected to the upper edge of its corresponding recess 47. Furthermore, in this embodiment, the stepped surface 46a is formed flat and horizontally arranged. The left-right dimension of the stepped surface 46a (the height difference between the protrusions 46 and the recesses 47) is formed to be approximately fixed, regardless of the position of the stepped surface 46a in the width direction (front-back direction).

[0268] Furthermore, the inclined surface of the protrusion 46 is formed such that a plane perpendicular to the left-right direction is inclined to the right side about an axis extending in the front-back direction as it moves downward. Therefore, in this inclined surface, as long as the positions in the up-down direction are the same, the amount of protrusion to the right (the amount of protrusion based on the recess 47) is formed to be the same regardless of the position in the width direction (front-back direction).

[0269] It should be noted that the present invention is not limited to this example. For example, it may also be configured such that the protrusion 46 does not have an inclined surface, and the outer surface of the protrusion 46 is formed as a flat surface perpendicular to the first direction.

[0270] A pair of guide portions 45b, one at the front and one at the back, are recessed to the left from the reference surface 49. More specifically, the amount of recess in the pair of guide portions 45b increases in a conical shape as they move upwards. The front guide portion 45b is formed by connecting to the front protrusion 46, and the rear guide portion 45b is formed by connecting to the rear protrusion 46. Additionally, for example, each guide portion 45b extends from the upper end face of the first flange portion 41 to the upper edge of the protrusion 46.

[0271] Furthermore, at the center of the upper end portion of the first flange portion 41 in the front-rear direction, a notch-shaped portion 45a is formed, opening upwards and to the left and right respectively (see reference). Figure 9 In (a) and (c) of the above, the front guide portion 45b is disposed on the front side compared to the notch-shaped portion 45a, and the rear guide portion 45b is disposed on the rear side compared to the notch-shaped portion 45a.

[0272] In this embodiment, the tilt angles of the guide portion 45b relative to the reference surface 49 and the tilt angle of the protrusion 46 relative to the reference surface 49 are set to be the same, and the tilted surfaces of the guide portion 45b and the protrusion 46 are arranged on their extension lines. In other words, the tilted surfaces of the guide portion 45b and the protrusion 46 are arranged on the same plane (see reference). Figure 6 and Figure 9 (b)). Furthermore, the width dimension (front-to-back dimension) of the guide portion 45b and the front-to-back dimension of the protrusion 46 are set to be the same. Therefore, the inclined surface including the guide portion 45b and the protrusion 46 is a continuous (fixed inclination angle) inclined surface that is long in the vertical direction. It should be noted that the inclination angle of the inclined surface including the guide portion 45b and the protrusion 46 can also vary in a quadratic curve manner.

[0273] In this embodiment, when the cover member 80 is fitted over the outer side of the coil frame portion 30, the spring sheet 83 is pressed to the right by the protrusion 46, thereby elastically deforming and swinging in the second direction. More specifically, the front ends 83c of a pair of spring sheets 83 are guided to the protrusion 46 along their corresponding guide portions 45b, and then slide downward along the inclined surface of the protrusion 46, accumulating spring force. When they pass the end 46b on the recess 47 side of the protrusion 46, the spring sheet 83 reaches a state of maximum elastic deformation. Then, while releasing a portion of the spring force of the spring sheet 83 (elastic recovery), the entry portion 84b of the front end 83c falls into the recess 47, and the front ends 83c of the spring sheet 83 are locked onto the protrusion 46.

[0274] Thus, in this embodiment, the spring sheet 83 is engaged with the protrusion 46 with a state where it has sufficient force (a state where the amount of elastic deformation is less than the state where the spring sheet 83 is elastically deformed to its maximum extent). Therefore, a structure that is not prone to creep in the resin material constituting the spring sheet 83 can be formed. Therefore, the spring characteristics of the spring sheet 83 can be well maintained. In addition, compared with the case where the spring sheet 83 is engaged with the protrusion 46 in the state of maximum elastic deformation, the amount of elastic deformation of the spring sheet 83 in the second direction (right side) is less, so the left and right dimensions of the cover member 80 can be reduced.

[0275] Furthermore, when attempting to pull the cover member 80 from above the coil frame portion 30, the spring sheet 83 must again pass the end 46b of the protrusion 46, thus elastically deforming and oscillating in the second direction. Therefore, even if the spring force of the spring sheet 83 weakens, it can still be expected to exert sufficient spring force, thereby preventing the cover member 80 from being pulled out of the coil frame portion 30.

[0276] Furthermore, such as Figure 6 As shown, preferably, the entry part 84b is in a non-contact state relative to the other (the coil frame part 30 in this embodiment).

[0277] Therefore, the force of the spring sheet 83 pushing the end 46b of the protrusion 46 upward can be fully ensured, thus more reliably preventing the coil frame portion 30 from falling off the cover member 80, and maintaining the state of contact (pressing) between the lower surface of the flange portion 86 and the surface of the coil frame portion 30.

[0278] Alternatively, it is preferable that the contact portion 84a makes line contact or point contact with the other (coil frame portion 30 in this embodiment).

[0279] In this way, the size of the contact area between the contact portion 84a (spring sheet 83) and the coil frame portion 30 can be reduced. Therefore, the spring sheet 83 can be properly positioned relative to the coil frame portion 30 (at the desired position) regardless of the size or tilt angle of the contact portion 84a in the coil frame portion 30.

[0280] However, for example, the contact portion 84a can also be a surface contact. In this case, for example, it is preferable that the height dimension (vertical dimension) of the contact portion 84a is smaller than the width dimension (front-back dimension). Moreover, when the height dimension of the contact portion 84a is further smaller than the width dimension, it becomes a line contact. That is, line contact between the contact portion 84a and the coil frame portion 30 means that the height dimension of the contact portion 84a is significantly smaller than the width dimension.

[0281] Furthermore, more preferably, a portion 83b of the spring sheet 83 that is on the base side compared to the contact portion 84a is separated from the other (the coil frame portion 30 in this embodiment).

[0282] In this way, the size of the contact area between the contact portion 84a (spring sheet 83) and the coil frame portion 30 can be further reduced. Therefore, the spring sheet 83 can be properly positioned relative to the coil frame portion 30 (at the desired position) regardless of the size or tilt angle of the contact portion 84a in the coil frame portion 30.

[0283] In this embodiment, such as Figure 6 As shown, a portion of the inner surface 831b of the intermediate portion 832 becomes a contact portion 84a that contacts the protrusion 46. For example, the contact portion 84a contacts the end portion 46b (right edge of the stepped surface 46a) on the concave side of the protrusion 46 along the front-rear direction. In addition, in this embodiment, the portion of the front end portion 83c that is lower (front end side) than the contact portion 84a and further in the first direction than the contact portion 84a becomes an entry portion 84b.

[0284] More specifically, for example, the middle portion 832 tilts to the right as it moves upward. Therefore, the spring sheet 83 elastically applies force to the coil frame portion 30, and applies a force to the end portion 46b on the concave side of the protrusion 46, pushing it to the upper left.

[0285] For example, the foremost end portion 833 tilts to the right as it moves downwards. Furthermore, the boundary between the inner surface 831b of the middle portion 832 and the inner surface 831c of the foremost end portion 833 is positioned to the left (in the first direction) of the right edge of the stepped surface 46a. More specifically, the portion of the inner surface 831b that is lower than the contact portion 84a and the inner surface 831c (entry portion 84b) of the foremost end portion 833 are positioned to the left of the right edge of the stepped surface 46a, while the outer surfaces of the middle portion 832 and the foremost end portion 833 are positioned to the right of the right edge of the stepped surface 46a. Additionally, the portion of the foremost end portion 83c that is lower than the contact portion 84a is not in contact with the recess 47.

[0286] It should be noted that, in this embodiment, the portion of the inner surface 831b of the middle portion 832 that is lower (front end side) than the contact portion 84a and the inner surface 831c of the foremost end portion 833 are located to the left (first direction side) than the contact portion 84a and enter the recess 47.

[0287] However, the inner surface 831c of the foremost end portion 833 does not necessarily have to be positioned further to the left than the contact portion 84a. For example, a portion of the inner surface 831c can be positioned further to the right than the right edge of the stepped surface 46a. Furthermore, the spring sheet 83 does not necessarily have to have a foremost end portion 833.

[0288] Here, Figure 7 The image shows the state of the cover member 80 that is fitted over the outer side of the coil frame portion 30, i.e., the state when no external force is applied to the spring sheet 83. Figure 7 In the middle, for ease of understanding, the convex part 46 and the concave part 47 are shown with double-dotted lines respectively.

[0289] like Figure 7 As shown, before the cover member 80 is fitted onto the outside of the coil frame portion 30, for example, the outer and inner surfaces of one end portion 83a are perpendicular to the left and right directions, respectively. Furthermore, for example, the outer surface of one end portion 83a is disposed on the same plane as the outer surface of the main portion 821a, and for example, the inner surface of one end portion 83a is disposed on the same plane as the inner surface of the main portion 821a.

[0290] Similarly, in the state before the cover member 80 is fitted outside the coil frame portion 30, for example, the outer surface and inner surface 831c of the foremost end portion 833 are perpendicular to the left and right directions, respectively. However, the outer surface of the foremost end portion 833 is positioned further inward than the outer surface of the main portion 821a, and the inner surface 831c of the foremost end portion 833 is positioned further inward than the inner surface of the main portion 821a.

[0291] Furthermore, in the state before the cover member 80 is fitted onto the outside of the coil frame portion 30, for example, the outer surface of the middle portion 832 is positioned further inward than the outer surface of the main portion 821a, and the inner surface 831b of the middle portion 832 is positioned further inward than the inner surface of the main portion 821a.

[0292] Therefore, in the state before the cover member 80 is fitted outside the coil frame portion 30, a portion of the spring sheet 83 (e.g., the middle portion 832 and the foremost portion 833) is located on the first direction side relative to the main portion 821a. More specifically, as Figure 7 As shown, a portion of the spring sheet 83 (the inner surface 831b of the middle portion 832 and the inner surface 831c of the foremost portion 833) is located to the left of the right edge of the stepped surface 46a.

[0293] Therefore, even if there are manufacturing deviations in the dimensions of the coil frame portion 30 in the left and right directions, the cover member 80 can effectively apply elastic force to the first side 45 (coil frame portion 30) because the spring sheet 83 is stably in contact with the protrusion 46.

[0294] The coil component 100 of this embodiment has the structure described above. Such a coil component 100, as an example, can be used as a high-voltage pulse transformer. However, the application of the coil component 100 is not limited to this example.

[0295] The assembly of the coil component 100 can be carried out, for example, in the following manner.

[0296] First, each winding 71 of the coil 70 (first coil and second coil) is wound around the cylindrical portion 31 of the coil frame portion 30. The end of each winding 71 is tied to the binding terminal (not shown) of the corresponding terminal portion 60 and fixed by soldering or tin soldering.

[0297] Next, the cover member 80 is fitted onto the coil frame portion 30 from above. At this time, for example, the front end 83c of the spring plate 83 is first positioned on the corresponding guide portion 45b of the first side surface 45. Then, when the cover member 80 is pressed downward relative to the coil frame portion 30, the entry portion 84b of the spring plate 83 slides downward along the inclined surface of the guide portion 45b and the inclined surface of the protrusion 46, respectively, and undergoes elastic deformation. As a result, the protrusion 46 is subjected to the force of the spring plate 83, and the inner surface of the second wall portion 82b contacts the second side surface 48. Then, when the entry portion 84b passes the end 46b of the protrusion 46, the spring plate 83 elastically recovers. During this elastic recovery, under the action of the spring force of the spring plate 83, the coil frame portion 30 is pushed upward relative to the cover member 80, and the lower surface of the flange portion 86 presses against (face contact) the coil frame portion 30. Thus, the cover member 80 is fitted onto the outside of the coil frame portion 30. However, for example, when the cover member 80 is placed on the coil frame portion 30 from above, the cover member 80 may be pressed downward relative to the coil frame portion 30 until the lower surface of the flange portion 86 contacts the surface of the coil frame portion 30.

[0298] Next, the core 15 of the first magnetic core component 11a is inserted into the through hole 36 through hole 88a, and the core 15 of the second magnetic core component 11b is inserted into the through hole 36 through hole 88b.

[0299] Next, a first fixing strip 90 is wound at least one turn around the magnetic core 10. This secures the magnetic core 10 to the cover member 80 and the coil frame portion 30. Further, a second fixing strip 95 is wound at least one turn around both the first fixing strip 90 and the second side peripheral wall portion 85 of the cover member 80 (see reference). Figure 4 and Figure 6 This allows the magnetic core 10 to be more reliably fixed to the cover member 80 and the coil frame portion 30.

[0300] Thus, coil component 100 is obtained.

[0301] Here, as described above, preferably, at least a portion of the protrusion 46 is inclined in the direction of increasing elastic restoring force of the spring sheet 83 as it moves outward toward the insertion direction when the cover member 80 is fitted outside the coil skeleton portion 30.

[0302] Therefore, when the cover member 80 is pressed downward relative to the coil frame portion 30, the elastic deformation of the spring sheet 83 can be smoothly increased along the outward insertion direction of the cover member 80 relative to the coil frame portion 30. Furthermore, as described above, the spring sheet 83 has a single-support structure in which the upper end (one end 83a) of the spring sheet 83 is supported in the outward insertion direction of the cover member 80 relative to the coil frame portion 30. Therefore, as in this embodiment, when the amount of protrusion of the protrusion 46 in the second direction increases towards the outward insertion direction (lower side), the spring sheet 83 can smoothly elastically deform according to the shape of the protrusion 46.

[0303] The above description of various embodiments is based on the accompanying drawings. However, these are merely illustrative examples of the present invention, and the present invention may also employ various structures other than those described above.

[0304] For example, the above description illustrates an example of the cover member 80 elastically applying force to the coil frame portion 30. However, the present invention is not limited to this example, and it may also be configured such that the coil frame portion 30 elastically applies force to the cover member 80. That is, it may also be configured such that the coil frame portion 30 elastically deforms, and the coil frame portion 30 elastically applies force to the cover member 80 using its elastic restoring force.

[0305] In this case, for example, the coil frame portion 30 may be configured such that a spring sheet 83 elastically applies force to the cover member 80, and the cover member 80 has a protrusion 46 and a recess 47 that is recessed towards the first direction side relative to the protrusion 46. In this case, for example, the right direction becomes the first direction, and the left direction becomes the direction opposite to the first direction (the second direction).

[0306] Furthermore, in this invention, the cover member 80 may be configured such that it elastically applies force to the coil frame portion 30, and the coil frame portion 30 elastically applies force to the cover member 80. That is, it may also be configured such that the cover member 80 elastically deforms, and the cover member 80 elastically applies force to the coil frame portion 30 using its elastic restoring force, and the coil frame portion 30 elastically deforms, and the coil frame portion 30 elastically applies force to the cover member 80 using its elastic restoring force.

[0307] In this case, the direction in which the cover member 80 elastically applies force to the coil frame portion 30 and the direction in which the coil frame portion 30 elastically applies force to the cover member 80 can be parallel to the mounting surface and are different from each other (e.g., perpendicular to each other). In other words, for example, it can be configured such that the cover member 80 elastically applies force to the coil frame portion 30 in a first direction, and the coil frame portion 30 elastically applies force to the cover member 80 in a second direction. Alternatively, it can be configured such that the cover member 80 elastically applies force to the coil frame portion 30 toward the first direction, and the coil frame portion 30 elastically applies force to the cover member 80 toward the second direction, or vice versa.

[0308] Furthermore, the above description illustrates an example in which the cover member 80 elastically applies force to the coil frame portion 30 in the first direction. However, the present invention is not limited to this example and may also be configured such that the cover member 80 elastically applies force to the coil frame portion 30 in both the first and second directions.

[0309] More specifically, for example, the cover member 80 may be configured such that both sides of the first direction side (first wall portion 82a side) and the second direction side (second wall portion 82b side) have spring sheets 83 that elastically apply force to the coil frame portion 30. In this case, it is preferable that both sides of the first side surface 45 and the second side surface 48 of the coil frame portion 30 have a protrusion 46 and a recess 47.

[0310] In this way, a force is generated whereby the spring sheet 83 on the first direction side pushes the coil frame portion 30 upward and to the left, and the spring sheet 83 on the second direction side pushes the coil frame portion 30 upward and to the right. Furthermore, the leftward force based on the spring sheet 83 on the first direction side and the rightward force based on the spring sheet 83 on the second direction side cancel each other out. On the other hand, the upward forces of both the spring sheet 83 on the first direction side and the spring sheet 83 on the second direction side are combined, so the resultant force of each spring sheet 83 is actually directed directly upward. Therefore, the torques around the Y-axis based on the spring sheets 83 are canceled out. Thus, tilting of the cover member 80 in the vertical direction can be suppressed.

[0311] Furthermore, even in this case, as described above, the coil frame portion 30 can be configured to elastically apply force to the cover member 80. That is, the coil frame portion 30 can be configured to elastically apply force to the cover member 80 in both the first and second directions.

[0312] Furthermore, the above description illustrates an example of magnetic core 10 having two E-type magnetic cores; however, the present invention is not limited to this example, and magnetic core 10 may also have E-type magnetic cores and I-type magnetic cores.

[0313] Furthermore, the magnetic core 10 may also have two T-shaped magnetic cores, or it may have a T-shaped magnetic core and an I-shaped magnetic core. In this case, when viewed from above, the overall shape of the magnetic core 10 is H-shaped.

[0314] Furthermore, the example described above illustrates a magnetic core 10 having a core portion 15; however, the magnetic core 10 may also not have a core portion 15. That is, the magnetic core 10 may have two core components that are U-shaped, or it may have a U-shaped core component and an I-shaped core component. In this case, when viewed from above, the overall shape of the magnetic core 10 is formed as a rectangular ring.

[0315] Furthermore, the example described above is of a magnetic core 10 having two components (first magnetic core component 11a and second magnetic core component 11b). However, the magnetic core 10 can be a single unit or have three or more components.

[0316] Furthermore, the example described above illustrates a downward-extending direction for the spring sheet 83. However, the spring sheet 83 can also extend upwards, for example. In this case, for instance, the spring sheet 83 extends upwards from the lower edge of the through hole 88a formed in the first wall portion 82a. That is, the upper end of the spring sheet 83 becomes a free end (forming a front end portion 83c), and the lower end of the spring sheet 83 becomes a fixed end (forming an end portion 83a).

[0317] The present invention incorporates the following technical ideas.

[0318] (1) A coil component comprising: a coil frame portion, a magnetic core inserted into the coil frame portion, a coil wound on the coil frame portion, and a cover member covering the coil frame portion by being sleeved on the outside of the coil frame portion.

[0319] At least one of the aforementioned cover member and the aforementioned coil frame portion has a spring sheet that elastically applies force to the other;

[0320] The aforementioned spring sheet has the following characteristics: one end of the spring sheet in the outward insertion direction is supported when the aforementioned cover member is sleeved on the outside of the aforementioned coil skeleton portion, and a single-support structure extends from that one end toward the front end of the spring sheet.

[0321] Through the force of the aforementioned spring sheet, in a first direction parallel to the mounting surface, at least one of the aforementioned cover member and the aforementioned coil frame portion elastically applies force to the other.

[0322] At least one of the above-mentioned cover member and the above-mentioned coil frame portion has: a protrusion and a recess that is recessed towards the first direction side compared to the above-mentioned protrusion;

[0323] The recess is adjacent to the protrusion on the extending direction side of the spring sheet;

[0324] The front end of the spring sheet has: a contact portion that contacts the protrusion and applies force to the protrusion, and an entry portion that is located on the front end side and enters the recess compared to the contact portion;

[0325] The spring sheet is bent such that the inlet portion is located on the first direction side relative to the contact portion, and at the contact portion and the protrusion, a force is generated that pushes the coil skeleton portion upward by the cover member.

[0326] (2) In the coil component described in (1) above, the inlet portion and the other portion are in a non-contact state.

[0327] (3) In the coil component described in (1) or (2) above, at least a portion of the protrusions tilts toward the direction in which the elastic restoring force of the spring sheet increases as the cover member is inserted toward the coil skeleton portion.

[0328] (4) In the coil component described in (3) above, the amount of the protrusion of the protrusion toward the spring sheet side becomes the largest at the end of the recess side.

[0329] (5) In any one of the coil components described in (1) to (4) above, a portion of the spring sheet that is further from the base end side than the contact portion is separated from the other one.

[0330] (6) In the coil component described in (5) above, the contact portion is in line contact or point contact with the other one.

[0331] (7) In any one of (1) to (6) above, one of the cover member and the coil skeleton part has the spring sheet, and the other of the cover member and the coil skeleton part has the protrusion and the recess.

[0332] (8) In any one of (1) to (6) above, the cover member has a side peripheral wall portion including a first wall portion and a second wall portion that are opposed to each other, the coil skeleton portion has a first side surface disposed along the first wall portion, at least one of the first wall portion and the first side surface has the spring sheet, at least the other of the first wall portion and the first side surface has the protrusion and the recess, the coil skeleton portion has a second side surface disposed along the second wall portion, the second side surface and the second wall portion are respectively formed flat and are in surface contact with each other.

[0333] (9) In the coil component described in (8) above, the cover component has a flange portion extending outward from the lower end of the side peripheral wall portion, and the lower surface of the flange portion is in surface contact with the coil skeleton portion.

Claims

1. A coil component comprising: a coil frame portion, a magnetic core inserted into the coil frame portion, a coil wound on the coil frame portion, and a cover member that covers the coil frame portion by being sleeved on the outside of the coil frame portion. The coil component is characterized in that... At least one of the cover member and the coil frame has a spring sheet that elastically applies force to the other. The spring sheet has the following characteristics: one end of the spring sheet is supported in the outward insertion direction when the cover member is fitted outside the coil skeleton portion, and a single-support structure extends from that end toward the front end of the spring sheet. Through the force of the spring sheet, in a first direction parallel to the mounting surface, at least one of the cover member and the coil frame portion elastically exerts a force on the other. At least one of the cover member and the coil frame portion has a protrusion and a recess that is recessed towards the first direction relative to the protrusion. The protrusion has a stepped surface between the protrusion and the recess, the stepped surface being formed flat and arranged horizontally along the first direction. The recess is adjacent to the protrusion on the extending direction side of the spring sheet. The front end of the spring sheet has: a contact portion that contacts the protrusion and applies force to the protrusion, and an entry portion that is located on the front end side of the contact portion and enters the recess. The spring sheet is bent such that the inlet portion is located on the first direction side relative to the contact portion, and at the contact portion and the protrusion, a force is generated by the cover member pushing the coil skeleton portion upward.

2. The coil component according to claim 1, characterized in that, The entry part and the other part are in a non-contact state.

3. The coil component according to claim 1 or 2, characterized in that, At least a portion of the protrusions tilts in the direction that increases the elastic restoring force of the spring sheet, as the cover member is inserted outwards onto the outside of the coil skeleton portion.

4. The coil component according to claim 3, characterized in that, The amount of the protrusion of the protrusion toward the spring sheet side becomes the largest at the end of the recess side.

5. The coil component according to claim 1 or 2, characterized in that, A portion of the spring sheet that is further from the base end than the contact portion separates from the other.

6. The coil component according to claim 5, characterized in that, The contact portion makes line contact or point contact with the other.

7. The coil component according to claim 1 or 2, characterized in that, One of the cover member and the coil frame portion has the spring sheet. The other of the cover member and the coil skeleton has the protrusion and the recess.

8. The coil component according to claim 1 or 2, characterized in that, The cover member has a peripheral wall portion including a first wall portion and a second wall portion that are opposed to each other. The coil frame portion has a first side surface disposed along the first wall portion. At least one of the first wall portion and the first side portion has the spring sheet. At least one of the first wall portion and the first side portion has the protrusion and the recess. The coil frame portion has a second side surface disposed along the second wall portion. The second side and the second wall are formed flat and in surface contact with each other.

9. The coil component according to claim 8, characterized in that, The cover member has a flange portion that extends outward from the lower end of the side peripheral wall portion. The lower surface of the flange portion is in surface contact with the coil frame portion.

Images