CN115132473A - Coil parts - Google Patents

Abstract

The invention provides a coil component which can easily realize the expected position relation between a magnetic core and a winding tube part. A coil component (100) comprises: a bobbin part (30) having a through insertion hole (36); a magnetic core (10) having an insertion portion (15) inserted into the insertion hole (36) and an outer arrangement portion arranged outside the bobbin portion (30); a coil (70) wound around the bobbin (30); and a cover member (80) that covers the upper portion of the winding tube part (30), the cover member (80) having a positioning protrusion (86) that positions the magnetic core (10), the positioning protrusion (86) being disposed along the outer surface of the outer arrangement part, the outer arrangement part being restricted from moving away from the winding tube part (30) in the axial direction of the insertion hole (36), or being disposed between the inner surface of the outer arrangement part and the winding tube part (30), the outer arrangement part being restricted from moving closer to the winding tube part (30) in the axial direction of the insertion hole (36).

Description

Coil parts

technical field

The present invention relates to coil components.

Background technique

As the coil component, for example, there is the coil component described in Patent Document 1.

The coil component of Patent Document 1 includes a bobbin portion (referred to as a bobbin in this document), a coil wound around the bobbin portion, and a magnetic core (referred to as a core portion in this document) , which is inserted through the bobbin portion.

Patent Document 1: Japanese Patent Laid-Open No. 2017-212355

According to the study by the inventors of the present application, in the structure of the coil component of Patent Document 1, there is room for improvement from the viewpoint of making the positional relationship between the bobbin portion and the magnetic core a desired positional relationship.

SUMMARY OF THE INVENTION

This invention is made in view of the said subject, and provides the coil component of the structure which can implement|achieve a desired positional relationship of a bobbin part and a magnetic core easily.

According to the present invention, there is provided a coil component including a bobbin portion having an insertion hole, and a magnetic core having an insertion portion inserted into the insertion hole and disposed outside the bobbin portion a coil wound around the bobbin portion; and a cover member covering the upper portion of the bobbin portion, the cover member having a positioning protrusion for positioning the magnetic core, The positioning protrusion is arranged along the outer surface of the outer arrangement portion, and restricts the outer arrangement portion from being away from the bobbin portion in the axial direction of the insertion hole, or is arranged on the outer arrangement portion. Between the inner surface and the bobbin portion, the outer arrangement portion is restricted from approaching the bobbin portion in the axial direction of the insertion hole.

According to the present invention, a desired positional relationship between the bobbin portion and the magnetic core can be easily achieved.

Description of drawings

FIG. 1 is a perspective view of a coil component according to the embodiment.

2 is an exploded perspective view of the coil component of the embodiment.

3 is a front view of the coil component of the embodiment.

4 is a plan view of the coil component of the embodiment.

5 is a side view of the coil component of the embodiment.

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 4 .

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 4 .

Fig. 8(a), Fig. 8(b), and Fig. 8(c) show the cover member according to the embodiment, wherein Fig. 8(a) is a perspective view, Fig. 8(b) is a front view, and Fig. 8(b) is a front view. (c) of 8 is a bottom view.

9 is a perspective view of a coil component according to Modification 1 of the embodiment.

10 is a side cross-sectional view of a coil component according to Modification 1 of the embodiment.

Fig. 11(a), Fig. 11(b), and Fig. 11(c) show a cover member according to Modification 1 of the embodiment, wherein Fig. 11(a) is a perspective view and Fig. 11(b) is a It is a front view, (c) of FIG. 11 is a bottom view.

12 is a side cross-sectional view of a coil component according to Modification 2 of the embodiment.

Label description

10: magnetic core; 11a: first magnetic core; 11b: second magnetic core; 12: base portion (outer arrangement portion); 12a: inner surface; 12b: outer surface; 13: outer leg portion; 15: insertion portion; 20 : main body member; 30: bobbin part; 31: cylindrical part; 32: upper wall part; 33: lower wall part; 34: front wall part; 35: rear wall part; 36: penetration hole; 40: flange part; 41: 1st flange part; 41a: 1st side surface; 42: 2nd flange part; 42a: 1st side surface; 46: protrusion part; 48: engaged part; 50: terminal holding part; 52: 1st terminal holding part; 53: First protrusion part; 55: Second terminal holding part; 56: Second protrusion part; 60: Terminal part; 61: First terminal part; 62: Second terminal part; 65: External Terminal; 66: Winding terminal; 70: Coil; 71: Winding; 72: Winding part; 80: Cover member; 81: Top surface part; 81a: Peripheral edge part; 1st side wall portion; 82b: 2nd side wall portion; 83: protruding portion; 84: downward extending portion; 84a: first contact surface; 84b: second contact surface; 85: main portion; 86: positioning projection part; 86a: inclined surface; 86b: stepped surface; 87: second lower extension part; 88: engaging claw; 89a: first slit part; 89b: second slit part; 91: first adhesive; 92: Second adhesive; 94: Cushion material; 96: Gap; 100: Coil member.

Detailed ways

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 12 .

In addition, in all drawings, the same code|symbol is attached|subjected to the same component, and description is abbreviate|omitted suitably.

As shown in any one of FIGS. 1 to 8( c ), the coil component 100 of the present embodiment includes a bobbin portion 30 having a through-insertion hole 36 , and a magnetic core 10 having a through-insertion hole 36 to be inserted through. The insertion portion 15 of the hole 36 and the outer arrangement portion (the base portion 12 in the case of the present embodiment) arranged outside the bobbin portion 30 ; the coil 70 wound around the bobbin portion 30 ; and the cover member 80 , which covers the upper portion of the bobbin portion 30 .

The cover member 80 has a positioning protrusion 86 for positioning the magnetic core 10 . In the case of the present embodiment, the positioning protrusions 86 are arranged along the outer surface of the outer arrangement portion, and restrict the outer arrangement portion from being away from the bobbin portion 30 in the axial direction of the insertion hole 36 .

As shown in FIG. 7 , in the case of the present embodiment, the magnetic core 10 is offset to one side in the axial direction of the insertion hole 36 with respect to the bobbin portion 30 by the positioning protrusion portion 86 .

Here, “biased” means that the magnetic core 10 is restricted from moving in the other direction in a state where the positioning protrusion 86 moves the magnetic core 10 toward one direction side in the axial direction of the insertion hole 36 . More specifically, the positioning protrusions 86 are formed in a state in which the gap between one side of the magnetic core 10 and the bobbin portion 30 and the other side of the magnetic core 10 are in the axial direction of the insertion hole 36 . Among the gaps between the bobbin portions 30 , the gap between the other side of the magnetic core 10 and the bobbin portion 30 is larger than the gap between one side of the magnetic core 10 and the bobbin portion 30 .

In addition, when the coil component 100 includes, for example, a pair of magnetic cores 10 , the outer arrangement portion here means an outer arrangement portion of the magnetic core 10 on the side where the positioning protrusions 86 of the pair of magnetic cores 10 are arranged. .

According to the present embodiment, the outer arrangement portion is restricted from being away from the bobbin portion 30 in the axial direction of the insertion hole 36 . More specifically, in the axial direction of the insertion hole 36 , the positioning protrusions 86 restrict the magnetic core 10 from moving in the other direction while biasing the magnetic core 10 in one direction. Therefore, a desired positional relationship between the bobbin portion 30 and the magnetic core 10 can be easily achieved. More specifically, since the gap 96 is formed between the inner surface of the magnetic core 10 and the bobbin portion 30 , as will be described later, expansion or contraction of the magnetic core 10 can be tolerated. Therefore, application of stress to the magnetic core 10 can be suppressed.

In addition, since the desired positional relationship between the bobbin portion 30 and the magnetic core 10 can be easily achieved by the positioning protrusions 86, the manufacturing process of the coil component 100 can be easily performed without using a dedicated jig. Positioning of the magnetic core 10 relative to the bobbin portion 30 . Therefore, the ease of manufacture of the coil component 100 can be improved.

In the following description, the vertical direction is referred to as the Z direction. The lower side (lower side) is the side where the terminal portion 60 ( FIG. 1 and the like) to be described later is arranged, that is, the side of the mounting surface on which the coil component 100 is mounted. However, the positional relationship (particularly, the vertical positional relationship) of each part at the time of manufacture and use of the coil component 100 is not limited to the positional relationship described in this specification.

The axial direction of the insertion hole 36 extends in a direction perpendicular to the Z direction. The axial direction of the insertion hole 36 is referred to as a Y direction, one of the Y directions is referred to as front (front), and the other is referred to as rear (rear).

In addition, the direction perpendicular to both the Y direction and the Z direction is referred to as the X direction, one of the X directions is referred to as the right (right), and the other is referred to as the left (left).

These directions are shown in the various figures.

In the Y direction, the side where the center position of the insertion hole 36 in the axial direction is located is referred to as the inner side (inner side), and the side opposite to the inner side is referred to as the outer side (outer side). Similarly, in the X direction, the side where the center position of the insertion hole 36 in the left-right direction is located is referred to as the inner side (inner side), and the side opposite to the inner side is referred to as the outer side (outer side).

In addition, the direction (direction) perpendicular to the Z direction is called horizontal (horizontal direction), and the direction (direction) along the Z direction is called vertical (vertical direction).

Here, in the case of this embodiment, the positioning protrusion 86 presses the outer surface of the outer arrangement portion in the direction in which the outer arrangement portion approaches the bobbin portion 30 in the axial direction of the insertion hole 36 (in the case of this embodiment) It is the outer surface 12b) of the base of the 1st magnetic core 11a.

Accordingly, in the axial direction of the insertion hole 36 , the positioning protrusions 86 can restrict the relative displacement of the magnetic core 10 relative to the bobbin portion 30 in a state where the magnetic core 10 is biased toward the bobbin portion 30 .

The magnetic core 10 includes, for example, a first magnetic core 11a and a second magnetic core 11b which are arranged to face each other and are combined with each other, at least one of the first magnetic core 11a and the second magnetic core 11b has an insertion portion 15, and the first magnetic core 11a Both the second magnetic core 11b and the second magnetic core 11b have an outer arrangement portion.

In the case of the present embodiment, the magnetic core 10 includes, for example, a pair of front and rear core members, that is, a first magnetic core 11 a arranged on the front side and a second magnetic core 11 b arranged on the rear side.

More specifically, the first magnetic core 11a and the second magnetic core 11b are, for example, so-called E-type cores, respectively, and the planar shape is formed in an E-shape (see FIG. 4 ).

The first magnetic core 11a has a base portion 12 extending in the left-right direction, a pair of outer leg portions 13 protruding rearward from both end portions of the base portion 12, respectively, and an insertion portion 15 protruding rearward from an intermediate portion of the base portion 12 . In addition, the protruding direction of the outer leg portion 13 and the insertion portion 15 from the base portion 12 is the same direction as the axial direction of the insertion hole 36 .

The base portion 12 is, for example, elongated along the left and right, and has a rectangular prism shape in a cross-sectional shape perpendicular to the axial direction. In the base portion 12 , two of the four surfaces arranged around the axis are the horizontal upper surface and the lower surface, respectively, and one of the remaining two surfaces (hereinafter referred to as the inner surface 12 a ) faces the bobbin portion 30 side. , and the other (hereinafter referred to as the outer surface 12 b ) faces the opposite side of the bobbin portion 30 . In the case of this embodiment, the inner surface 12a of the base portion 12 constitutes the inner surface of the first magnetic core 11a, and the outer surface 12b of the base portion 12 constitutes the outer surface of the first magnetic core 11a.

Each of the outer leg portion 13 and the insertion portion 15 is, for example, elongated in the front and rear, and the cross-sectional shape perpendicular to the axial direction is formed in a rectangular prism shape. In the base portion 12 , two of the four surfaces arranged around the axis are respectively a horizontal upper surface and a lower surface, and one of the remaining two surfaces faces rightward and the other faces leftward.

The base portion 12 , the outer leg portions 13 , and the insertion portion 15 are, for example, set to have the same vertical size as each other. In the first magnetic core 11a, the upper surface of the base portion 12, the upper surface of the outer leg portion 13, and the upper surface of the insertion portion 15 are arranged on the same plane. That is, the entire upper surface of the first magnetic core 11a is formed flat and arranged horizontally. Similarly, in the first magnetic core 11a, the lower surface of the base portion 12, the lower surface of the outer leg portion 13, and the lower surface of the insertion portion 15 are arranged on the same plane. That is, the entire lower surface of the first magnetic core 11a is formed flat and arranged horizontally.

In the case of the present embodiment, as shown in FIG. 2 , both the first magnetic core 11 a and the second magnetic core 11 b have the insertion portion 15 .

In more detail, the 2nd magnetic core 11b is formed in the same shape as the 1st magnetic core 11a, for example. That is, the second magnetic core 11 b has the base portion 12 , the pair of outer leg portions 13 , and the insertion portion 15 . The base 12 has an upper surface, a lower surface, an inner surface 12a, and an outer surface 12b.

The 2nd magnetic core 11b and the 1st magnetic core 11a are arrange|positioned symmetrically in front and back.

The front end surfaces of the respective outer legs 13 of the first core 11 a and the second core 11 b in the protruding direction are formed flat and are vertical surfaces perpendicular to the axial direction of the insertion hole 36 .

Similarly, the front end surfaces in the protruding direction of the insertion portions 15 of the first magnetic core 11 a and the second magnetic core 11 b are formed flat and are vertical surfaces perpendicular to the axial direction of the insertion hole 36 .

As shown in FIG. 3 , the inner surface 12 a and the outer surface 12 b of the base portion 12 are also formed flat, and are vertical planes perpendicular to the axial direction of the coil 70 . The inner surface of the first magnetic core 11a and the inner surface of the second magnetic core 11b face each other, and the outer surface of the first magnetic core 11a and the outer surface of the second magnetic core 11b face in opposite directions to each other.

As shown in FIG. 2 , the coil component 100 further includes a main body member 20 having a bobbin portion 30 and a terminal holding portion 50 , and a plurality of terminal portions 60 held by the terminal holding portion 50 . The winding 71 constituting the coil 70 is wound around the bobbin portion 30 .

The bobbin portion 30 has, for example, a cylindrical portion 31 and a pair of flange portions 40 provided at both ends of the cylindrical portion 31 in the axial direction, respectively.

The cylindrical portion 31 is formed in a rectangular cylindrical shape having an insertion hole 36 penetrating in the axial direction.

For example, as shown in FIG. 2, the cylindrical part 31 is comprised so that the upper wall part and the lower wall part which were arrange|positioned horizontally, and the right side wall part and the left side wall part which were arrange|positioned vertically, respectively, were respectively comprised.

For example, the inner space of the penetration insertion hole 36 has a prismatic shape. The bottom surface (inner peripheral bottom surface) and the top surface of the inner peripheral surface of the insertion hole 36 are horizontal surfaces, respectively, and the left and right surfaces of the inner peripheral surface of the insertion hole 36 are vertical surfaces, respectively.

As shown in FIGS. 2 , 3 and 4 , the bobbin portion 30 has, for example, a pair of flange portions 40 , that is, a first flange portion 41 arranged on the front side and a second flange portion 42 arranged on the rear side. .

The first flange portion 41 and the second flange portion 42 respectively protrude from both end portions of the cylindrical portion 31 toward the outer periphery of the cylindrical portion 31 , for example.

In more detail, the 1st flange part 41 and the 2nd flange part 42 are respectively formed in the flat plate shape perpendicular|vertical to the axial direction of the cylindrical part 31, for example.

The front-rear dimension (thickness dimension) of the first flange portion 41 is the same as the front-rear dimension (thickness dimension) of the second flange portion 42 . The left and right dimensions of the first flange portion 41 are the same as the left and right dimensions of the second flange portion 42 , and the vertical dimensions of the first flange portion 41 are the same as the vertical dimensions of the second flange portion 42 .

In addition, the right end face of the first flange portion 41 and the right end face of the second flange portion 42 are arranged on the same plane, and the left end face of the first flange portion 41 and the left end face of the second flange portion 42 are arranged on the same plane. flat.

As shown in FIGS. 2 , 3 , and 4 , the main body member 20 includes a first terminal holding portion 52 arranged on the front side and a second terminal holding portion 55 arranged on the rear side as the terminal holding portion 50 .

The first terminal holding portion 52 and the second terminal holding portion 55 are each formed in, for example, a rectangular prism shape of a flat shape, which is elongated on the left and right sides, and whose front and rear dimensions are smaller than the vertical dimensions.

The first terminal holding portion 52 protrudes forward and in the left-right direction from the lower edge of the first flange portion 41 . The second terminal holding portion 55 protrudes rearward and in the left-right direction from the lower edge of the second flange portion 42 .

In the case of the present embodiment, the front and rear dimensions of the first terminal holding portion 52 are the same as the front and rear dimensions of the second terminal holding portion 55 . The vertical dimension of the first terminal holding portion 52 is the same as the vertical dimension of the second terminal holding portion 55 . The left and right dimensions of the first terminal holding portion 52 are the same as the left and right dimensions of the second terminal holding portion 55 . In addition, the height position of the lower end surface of the extension part 59 is the same as the height position of the lower end surface of the first terminal holding part 52 .

However, the mutual dimensional relationship between the first terminal holding portion 52 and the second terminal holding portion 55 is not particularly limited, and the first terminal holding portion 52 and the second terminal holding portion 55 may have mutually different dimensions.

The upper surfaces of each of the first terminal holding portion 52 and the second terminal holding portion 55 are formed flat and arranged horizontally.

The first terminal holding portion 52 and the second terminal holding portion 55 respectively hold a plurality of terminal portions 60 to be described later.

As shown in FIGS. 4 and 5 , in the case of the present embodiment, the coil component 100 has a plurality of (eg, eight) terminal portions 60 electrically connected to the coil 70 .

As an example, among the eight terminal portions 60 , four terminal portions 60 (hereinafter referred to as first terminal portions 61 ) are held by the first terminal holding portion 52 , and the remaining four terminal portions 60 (hereinafter referred to as second terminal portions 62 ) ) is held by the second terminal holding portion 55 .

The first terminal portions 61 are arranged side by side in the left-right direction in the first terminal holding portion 52 . Similarly, the respective second terminal portions 62 are arranged side by side in the left-right direction in the second terminal holding portion 55 .

Each terminal portion 60 is formed by, for example, bending a long rod-shaped (or plate-shaped) metal member.

As shown in FIGS. 2 and 3 , each first terminal portion 61 has an upper portion (not shown) embedded in the first terminal holding portion 52 and a lower portion exposed to the outside from the first terminal holding portion 52 . Further, the exposed lower portion is the external terminal 65 for external connection when the coil component 100 is mounted.

More specifically, the first terminal portion 61 is bent at an intermediate portion in the longitudinal direction. The upper portion of the first terminal portion 61 extends up and down, and the lower portion of the first terminal portion 61 extends in the front-rear direction. The external terminal 65 of each first terminal portion 61 protrudes downward from the bottom surface of the first terminal holding portion 52 and further extends forward.

For example, each of the second terminal portions 62 is formed in a shape symmetrical to the front and rear of each of the first terminal portions 61 . Therefore, the third terminal portion 63 has an upper portion (not shown) embedded in the second terminal holding portion 55 and an external terminal 65 (lower portion) exposed to the outside from the first terminal holding portion 52 , respectively.

The longitudinal dimension in the front-rear direction of the external terminal 65 of each terminal portion 60 is set to be the same as each other, for example.

Moreover, the thickness dimension of the plate-shaped metal member which comprises each terminal part 60 is set to the same thickness dimension as each other.

As shown in FIGS. 2 and 4 , the coil component 100 has, for example, a first coil and a second coil as the coil 70 .

The first coil and the second coil are constituted by windings 71, respectively. Each winding 71 of the coil 70 is wound around the cylindrical portion 31 of the bobbin portion 30 . The winding portion 72 is constituted by the coil 71 wound around the cylindrical portion 31 (see FIG. 2 ). Both ends of each winding 71 are electrically connected to the corresponding terminal portions 60 , respectively. As an example, both ends of each coil 71 are drawn out from the winding portion 72 and wound around the corresponding terminal portion 60 to be electrically connected to the terminal portion 60 . In addition, illustration is abbreviate|omitted about the part drawn out from the winding part 72 of the winding wire 71, and the winding part of the winding wire 71 with respect to the terminal part 60. FIG. The portion where each winding 71 is wound may be a portion of the terminal portion 60 protruding from the terminal holding portion 50 (for example, a portion protruding from the terminal holding portion 50 that is different from the L-shaped portion including the external terminals 65 , a portion in the terminal portion 60 between the part embedded in the bobbin part 30 and the external terminal 65 ), the terminal part 60 may be a part embedded in the bobbin part 30 .

In addition, in each figure, illustration of the end part of the coil|winding 71 wound around the terminal part 60, and the part extended toward the terminal part 60 from the winding part 72 is abbreviate|omitted.

As shown in FIG. 1 , FIG. 2 , and FIG. 6 , the cover member 80 has, for example, a top surface portion 81 covering the upper portion of the bobbin portion 30 . In more detail, the cover member 80 has the 1st side wall part 82a and the 2nd side wall part 82b which extend downward from the peripheral edge part 81a of the top surface part 81, respectively.

The top surface portion 81 is formed in, for example, a flat plate shape and is arranged horizontally. As shown in FIG. 4 , the planar shape of the top surface portion 81 is, for example, a substantially rectangular shape. A portion on the rear right side of the top surface portion 81 is a notch-shaped portion 81b in which the corner portion is partially cut away. The orientation of the cover member 80 can be easily discriminated from the cut-out shape portion 81b.

Since the cover member 80 has the top surface portion 81, when the coil component 100 is mounted on the board, the top surface portion 81 can be sucked by a mounter, and the operation of mounting the coil component 100 on the board can be easily performed. In addition, the top surface part 81 may be formed unevenly, for example.

The 1st side wall part 82a and the 2nd side wall part 82b are each formed in the shape of a flat flat plate, and are arrange|positioned perpendicularly|vertically.

The first side wall portion 82 a extends downward, for example, from the lower surface of the front end portion of the top surface portion 81 , and the second side wall portion 82 b extends downward, for example, from the lower surface of the rear end portion of the top surface portion 81 . As shown in FIG. 5, for example, the 1st side wall part 82a and the 2nd side wall part 82b face each other in the left-right direction.

The right side surface of the first side wall portion 82a and the right side surface of the top surface portion 81 are arranged on the same plane, and the left side surface of the second side wall portion 82b and the left side surface of the top surface portion 81 are arranged on the same plane.

The entirety of each of the first magnetic core 11a and the second magnetic core 11b is integrally molded from a magnetic material.

The main body member 20 (the bobbin portion 30 and the terminal holding portion 50 ) is integrally molded with, for example, an insulating material such as resin as a whole.

The cover member 80 is integrally molded with, for example, an insulating material such as resin as a whole.

In the case of this embodiment, the cover member 80 is attached to the bobbin part 30 so as to cover the upper end part of the bobbin part 30 , for example. More specifically, as shown in FIGS. 3 and 5 , etc., the top surface portion 81 covers the upper side of the bobbin portion 30 , the first side wall portion 82 a covers the right side of the upper end portion of the bobbin portion 30 , and the second side wall portion 82 a The portion 82b covers the left side of the upper end portion of the bobbin portion 30 .

As shown in FIG. 6, the inner surface (lower surface) of the top surface part 81, the upper end surface of the 1st flange part 41, and the upper end surface of the 2nd flange part 42 are each mutually in surface contact, for example. However, the inner surface of the top surface portion 81 and the upper end surface of the first flange portion 41 and the upper end surface of the second flange portion 42 may face each other in a state of being close to each other.

As shown in FIG. 4, it is preferable that the inner surface of the 1st side wall part 82a, the right side surface of the 1st flange part 41, and the right side surface of the 2nd flange part 42 are each arrange|positioned so as to oppose each other. It is preferable that the inner surface of the 2nd side wall part 82b opposes the left side surface of the 1st flange part 41, and the left side surface of the 2nd flange part 42 in parallel, respectively.

The insertion portion 15 of the first magnetic core 11 a is inserted into the insertion hole 36 through the opening on the front side of the insertion hole 36 of the bobbin portion 30 (see FIG. 6 ). Similarly, the insertion portion 15 of the second magnetic core 11 b is inserted into the insertion hole 36 through the opening on the rear side of the insertion hole 36 of the bobbin portion 30 .

The front end surface of the insertion portion 15 of the first magnetic core 11 a and the front end surface of the insertion portion 15 of the second magnetic core 11 b butt against each other inside the insertion hole 36 . That is, the front end surface of the insertion portion 15 of the first magnetic core 11a and the front end surface of the insertion portion 15 of the second magnetic core 11b are in surface contact with each other.

A closed magnetic circuit is constituted by the first magnetic core 11a and the second magnetic core 11b.

Further, as shown in FIG. 6 , the coil 70 is wound around the bobbin portion 30 , and the insertion portion 15 is inserted through the bobbin portion 30 , so that the coil 70 is wound around the magnetic core 10 .

As shown in FIGS. 3 and 4 , the left and right outer leg portions 13 of the first magnetic core 11 a are arranged outside the bobbin portion 30 . The inner surface of the right outer leg portion 13 faces the right side surface of the first flange portion 41 and the right side surface of the second flange portion 42, respectively, and the inner surface of the left outer leg portion 13 is opposed to the first flange portion 41. The left side surface of the edge portion 41 and the left side surface of the second flange portion 42 face each other. The base portion 12 of the first magnetic core 11 a is disposed on the front side of the bobbin portion 30 , and the inner surface 12 a of the base portion 12 faces the front surface of the first flange portion 41 .

More specifically, the left and right outer leg portions 13 of the second magnetic core 11 b are arranged outside the bobbin portion 30 . The inner surface of the right outer leg portion 13 faces the right side surface of the first flange portion 41 and the right side surface of the second flange portion 42, respectively, and the inner surface of the left outer leg portion 13 is opposed to the first flange portion 41. The left side surface of the edge portion 41 and the left side surface of the second flange portion 42 face each other. The base portion 12 of the second core 11 b is disposed on the rear side of the bobbin portion 30 , and the inner surface 12 a of the base portion 12 faces the rear surface of the second flange portion 42 .

The front end surface of the right outer leg portion 13 of the first magnetic core 11a and the front end surface of the right outer leg portion 13 of the second magnetic core 11b are butted against each other. That is, the front end surface of the right outer leg portion 13 of the first magnetic core 11a and the front end surface of the right outer leg portion 13 of the second magnetic core 11b are in surface contact with each other. Similarly, the front end surface of the left outer leg portion 13 of the first magnetic core 11a and the front end surface of the left outer leg portion 13 of the second magnetic core 11b are butted against each other.

The lower surface of the insertion portion 15 is arranged along the inner peripheral bottom surface of the insertion hole 36 .

Here, in the case of the present embodiment, the front end surface of the outer leg portion 13 on the right side of the first magnetic core 11a and the front end surface of the outer leg portion 13 on the right side of the second magnetic core 11b pass through the first adhesive 91 (refer to FIG. 3 and FIG. 4 ) and are fixed to each other. Similarly, the front end surface of the left outer leg portion 13 of the first magnetic core 11a and the front end surface of the left outer leg portion 13 of the second magnetic core 11b pass through the first adhesive 91 (see FIGS. 4 and 5 ). ) are fixed to each other. By the first adhesive 91, the first magnetic core 11a and the second magnetic core 11b are integrally connected to each other, and the mutual positional displacement of the first magnetic core 11a and the second magnetic core 11b is suppressed. In addition, the magnetic core 10 can be suppressed from falling off from the bobbin portion 30 .

As shown in FIG. 3 , the lower surfaces of the first magnetic core 11a and the second magnetic core 11b are arranged on the same plane.

The base portion 12 of the first magnetic core 11a is disposed on the upper side of the first terminal holding portion 52, and is disposed along the upper surface of the first terminal holding portion 52 (see FIGS. 1 and 4).

The base portion 12 of the second magnetic core 11b is disposed on the upper side of the second terminal holding portion 55, and is disposed along the upper surface of the second terminal holding portion 55 (see FIGS. 3 and 4). The lower surfaces of the first magnetic core 11a and the second magnetic core 11b and the upper surface of the terminal holding portion 50 (the first terminal holding portion 52 and the second terminal holding portion 55 ) may be in surface contact with each other, or may face each other in a state of being close to each other. set.

As shown in FIGS. 3 and 7 , in the case of the present embodiment, the positioning protrusions 86 press the outer arrangement portion of the first magnetic core 11 a toward the bobbin portion 30 , and the outer arrangement portion of the first magnetic core 11 a is The surface (in this embodiment, the inner surface 12a of the base 12 ) facing the outer arrangement portion of the second magnetic core 11b is in contact with the bobbin portion 30, and the outer arrangement portion of the second magnetic core 11b is in contact with the bobbin portion 30. A gap 96 is formed between the surface facing the outer arrangement portion of the first core 11 a (in this embodiment, the inner surface 12 a of the base portion 12 of the second core 11 b ) and the bobbin portion 30 .

Accordingly, even if the magnetic core 10 expands and contracts due to heating of the magnetic core 10 during use of the coil component 100 or the like, it can pass through the gap between the inner surface 12 a of the second magnetic core 11 b and the bobbin portion 30 . 96 allows expansion or contraction of the magnetic core 10 . Therefore, application of stress to the magnetic core 10 can be suppressed.

In addition, by maintaining the positional relationship between the magnetic core 10 and the bobbin portion 30 well, the positional relationship between the magnetic core 10 and the coil 70 can also be well maintained, so that more stable characteristics of the coil component 100 can be realized.

More specifically, in the case of the present embodiment, the cover member 80 further includes a downward extending portion 84 (see FIGS. 1 and 3 , etc.) extending downward from the peripheral edge portion 81 a of the top surface portion 81 . The lower end portion is formed with a positioning protrusion 86 .

More specifically, as shown in FIGS. 8( a ) and 8 ( c ), the downward extending portion 84 has, for example, a main portion 85 extending downward from the lower surface of the front end portion of the peripheral edge portion 81 a , and positioning The protruding portion 86 extends downward from the lower end of the main portion 85 .

The main portion 85 is formed, for example, in a substantially rectangular parallelepiped shape along the vertical and horizontal stripes. The rear end surface of the main portion 85 is arranged rearward of the rear end surface of the top surface portion 81 , while the front end surface of the main portion 85 is arranged frontward than the front end surface of the top surface portion 81 . More specifically, a part of the main part 85 protrudes forward from the front end face of the peripheral edge part 81a, and the part protrudes to the same height position as the upper surface of the top surface part 81 (the part of the upper surface and the upper surface of the top surface part 81 are arranged so as to be same plane).

As shown in FIGS. 8( a ), 8 ( b ), and 8 ( c ), the positioning protrusions 86 are, for example, vertically elongated protruding pieces, and have a front surface, a rear surface, and left and right end surfaces.

In the case of the present embodiment, a part of the lower surface of the main portion 85 serves as an area where the positioning protrusions 86 are not formed, and the stepped surface 84 a is formed by the lower end portion of the main portion 85 and the upper end of the positioning protrusions 86 .

More specifically, the front surface of the positioning protrusion portion 86 and the front surface of the main portion 85 are arranged on the same plane. On the other hand, the rear surface of the positioning protrusion 86 is arranged at the rear side of the rear surface of the main portion 85 , and the stepped surface 84 a is arranged at the upper end of the rear surface of the positioning protrusion 86 and the lower end of the rear surface of the downward extending portion 84 . the entire range. The stepped surface 84a is formed flat and arranged horizontally. The stepped surface 84a is in surface contact with the upper surface of the base portion 12 of the first magnetic core 11a. Accordingly, it is possible to suppress rattling of the first magnetic core 11a (and thus the second magnetic core 11b) in the vertical direction.

The right side of the positioning protrusion 86 and the right side of the main portion 85 are arranged on the same plane, and the left side of the positioning protrusion 86 and the left side of the main portion 85 are arranged on the same plane.

In addition, as shown in FIG. 6 , among the positioning protrusions 86 , a surface facing the outer arrangement portion of the first magnetic core 11 a (the rear end surface of the positioning protrusions 86 in this embodiment) has, for example, an upward facing surface. And the inclined surface 86a inclined in the direction approaching the outer arrangement part.

When the cover member 80 is attached to the bobbin portion 30, the positioning protrusion portion 86 and the main portion 85 are guided downward along the inclined surface 86a.

More specifically, the rear surface of the positioning protrusion 86 includes, for example, an inclined surface 86a and a flat surface 86b formed flat and arranged vertically. The upper edge of the flat surface 86b is connected to, for example, the lower surface of the main portion 85, and the lower edge of the flat surface 86b is connected to the upper edge of the inclined surface 86a.

The flat surface 86b is, for example, perpendicular to the front-rear direction.

As shown in FIG. 6 , in the case of the present embodiment, the flat surface 86b of the positioning protrusion 86 is in surface contact with the outer surface 12b of the base 12 of the first magnetic core 11a. Moreover, the lower end surface of the positioning protrusion 86 is located below the upper surface of the 1st magnetic core 11a, and is located above the lower surface of the 1st magnetic core 11a.

In addition, the positioning protrusion 86 may be, for example, a spring piece that restricts the outer arrangement portion from being away from the bobbin portion 30 in the axial direction of the insertion hole 36 by elastic force (spring force).

Here, as shown in FIGS. 3 and 7 , the bobbin portion 30 has, for example, a pair of front and rear side surfaces, that is, a first side surface 41a arranged on the front side and a second side surface 42a arranged on the rear side.

In the case of the present embodiment, the positioning protrusion 86 presses the outer surface 12b of the base 12 of the first core 11a toward the first side surface 41a in the axial direction (front-rear direction) of the insertion hole 36, and the first core The inner surface 12a of the base 12 of 11a is in contact with the first side surface 41a. In addition, a gap 96 is formed between the inner surface 12a of the base portion 12 of the second core 11b and the second side surface 42a.

The first side surface 41 a is, for example, the front surface of the first flange portion 41 , and the second side surface 42 a is, for example, the rear surface of the second flange portion 42 . The first side surface 41a and the second side surface 42a are respectively formed flat and perpendicular to the front-rear direction.

The flat surface 86b of the positioning protrusion 86 faces the first side surface 41a across the outer arrangement portion of the first magnetic core 11a in the front-rear direction. The flat surface 86b is in surface contact with the outer surface 12b of the base portion 12 of the first magnetic core 11a. In addition, the first side surface 41a of the bobbin portion 30 is in surface contact or point contact with the inner surface 12a of the base portion 12 of the first magnetic core 11a. In this way, in the axial direction (front-rear direction) of the insertion hole 36, the base portion 12 of the first magnetic core 11a is sandwiched between the positioning protrusion portion 86 and the first side surface 41a. Thereby, the magnetic core 10 can be suppressed from being displaced relative to the bobbin portion 30 and the cover member 80 in the front-rear direction. That is, since the gap 96 between the inner surface 12a of the second core 11b and the second side surface 42a can be maintained well, the stress between the core 10 and the bobbin portion 30 can be more reliably absorbed by the gap 96 .

Moreover, in the case of this embodiment, the cover member 80 has the 2nd downward extension part 87 extended downward from the peripheral edge part 81a of the top surface part 81, and the 2nd downward extension part 87 has the engaging claw 88. As shown in FIG. 7 , the engagement claw 88 is engaged with the bobbin portion 30 .

Thereby, the state in which the cover member 80 is attached to the bobbin part 30 can be maintained favorably. Further, in the case of the present embodiment, the magnetic core 10 is inserted into the bobbin portion 30 in a state where the magnetic core 10 is positioned relative to the bobbin portion 30 by the cover member 80 . Therefore, by maintaining the positional relationship between the bobbin portion 30 and the cover member 80 well, the positional relationship between the magnetic core 10 and the bobbin portion 30 can also be well maintained, and therefore, the inner surface of the second core 11b can be well maintained Gap 96 between 12a and bobbin portion 30 . In addition, since the positional relationship between the magnetic core 10 and the coil 70 is also favorably maintained, more stable characteristics of the coil component 100 can be realized.

More specifically, the cover member 80 includes a second downward extending portion 87a (see FIG. 7 ) that is arranged on the same side as the downward extending portion 84 with reference to the bobbin portion 30 , and a second downward extending portion 87b (see FIG. 6 ) is arranged on the side opposite to the downward extending portion 84 with the bobbin portion 30 as a reference. In the case of this embodiment, the 2nd downward extension part 87a is arrange|positioned at the front side, and the 2nd downward extension part 87b is arrange|positioned at the rear side.

As shown in FIGS. 8( b ) and 8 ( c ), the second downward extending portion 87 a extends downward from the front edge portion of the lower surface of the top surface portion 81 . The second downward extending portion 87 a is engaged with, for example, the first flange portion 41 of the bobbin portion 30 .

The second downward extending portion 87b extends downward from the rear edge portion of the lower surface of the top surface portion 81 . The second downward extending portion 87a is engaged with, for example, the second flange portion 42 of the bobbin portion 30 .

According to such a configuration, both the second downward extending portion 87a on the front side and the second downward extending portion 87b on the rear side are engaged with the bobbin portion 30 by the engaging structure, so that the cover member 80 can be restricted in the front-rear direction. Relative displacement with respect to the bobbin portion 30 . Furthermore, the relative displacement of the cover member 80 with respect to the magnetic core 10 can also be restricted in the front-rear direction. Therefore, the positional displacement of the positioning protrusions 86 with respect to the first magnetic core 11 a can also be suppressed in the front-rear direction.

Further, as shown in FIGS. 8( a ) and 8 ( c ), etc., the cover member 80 has a pair of second downward extending portions 87 (in the case of the present embodiment, in the case of the present embodiment) that sandwich the downward extending portion 84 The 2nd downward extension part 87a) arrange|positioned at the front side.

In more detail, the 2nd downward extension part 87a is respectively formed in the right side and the left side of the front edge part of the top surface part 81 so that the lower extension part 84 may be sandwiched, for example in the left-right direction. In other words, the downward extending portion 84 is arranged between the second downward extending portion 87a on the right and the second downward extending portion 87a on the left.

In this way, the relative displacement of the cover member 80 with respect to the bobbin portion 30 around the Z axis can be restricted by forming the two second downward extending portions 87a in parallel with each other in the left-right direction. Furthermore, various relative displacements of the downward extension portion 84 relative to the magnetic core 10 around the Z-axis can be restricted, so that the positioning protrusions 86 can satisfactorily maintain the state in which the first magnetic core 11 a is pressed toward the bobbin portion 30 .

Each of the pair of second downward extending portions 87a has, for example, a flat plate portion formed in a flat plate shape, and the plate surface of the flat plate portion faces the front-rear direction. The front end surface of the flat plate portion of each of the pair of second downward extending portions 87a is arranged on the same plane as the front end surface of the top surface portion 81, for example.

As shown in FIGS. 7 and 8( c ), the engaging claws 88 of each of the pair of second downward extending portions 87a protrude from the rear end surface of the flat plate portion toward the bobbin portion 30 side (rearward). The upper surface of the engagement claw 88 is formed flat and arranged horizontally. On the other hand, a part of the lower end portion of the engagement claw 88 is chamfered. Moreover, the front-end|tip surface 88a (the front-end|tip in the protruding direction) of the engagement claw 88 is formed flat, and is arrange|positioned vertically.

In addition, as shown in FIGS. 8( a ) and 8 ( c ), the top surface portion 81 is formed with a pair of left and right first slit portions 89 a penetrating the top surface portion 81 in the vertical direction. The pair of first slit portions 89a extend substantially linearly in the left-right direction, respectively. The first slit portion 89a on the right side is adjacent to the flat plate portion of the second downward extending portion 87a on the right side in the front-rear direction, and is disposed at the rear side of the flat plate portion. Similarly, the first slit portion 89a on the left side is adjacent to the flat plate portion of the second downward extending portion 87a on the left side in the front-rear direction, and is disposed at the rear side of the flat plate portion.

Further, as shown in FIG. 8( c ), in the case of this embodiment, the cover member 80 has a pair of left and right second downward extending portions 87b (in the case of this embodiment, the second lower portion disposed on the rear side extension 87b).

Thereby, the relative displacement of the cover member 80 with respect to the bobbin portion 30 around the Z axis can be more reliably restricted.

More specifically, each of the pair of second downward extending portions 87b is formed in a shape symmetrical to the front and rear of the pair of second downward extending portions 87a, for example. That is, each of the pair of second downward extending portions 87b has a flat plate portion and an engaging claw 88 that protrudes forward from the front end surface of the flat plate portion. The rear end surface of the flat plate portion of each of the pair of second downward extending portions 87b and the rear end surface of the top surface portion 81 are arranged on the same plane.

Moreover, as shown in FIG.8(a) and FIG.8(c), the 2nd slit part 89b which penetrates this top surface part 81 in the up-down direction is formed in the top surface part 81. As shown in FIG. The second slit portion 89b extends substantially linearly in the left-right direction. The 2nd slit part 89b is adjacent to the flat plate part of a pair of 2nd downward extension part 87b in the front-back direction, and is arrange|positioned at the front side rather than this flat plate part.

Here, as shown in FIGS. 2 , 5 , 6 and 7 , on the first side surface 41 a (the front surface of the first flange portion 41 ), a pair of left and right quilts that engage with the second downward extending portion 87 a are formed, respectively. The engaging portion 48 and a pair of right and left protruding portions 46 connected to the engaged portion 48 .

A pair of left and right to-be-engaged parts 48 are respectively formed in the front part and the rear part of the 1st side surface 41a so that the insertion hole 36 may be interposed in the left-right direction, for example. In addition, a pair of right and left to-be-engaged parts 48 are formed in the upper end part of the 1st side surface 41a, for example, and are arrange|positioned at the upper side rather than the opening of the front side of the insertion hole 36. As shown in FIG.

Each to-be-engaged portion 48 protrudes forward, for example, from the first side surface 41a. More specifically, each of the engaged portions 48 includes a tapered portion whose bulge amount increases in a tapered shape toward the downward direction, and a flat portion that is formed flat and arranged vertically.

The lower edge of each tapered portion is connected to the upper edge of the corresponding flat portion. For example, the lower surface of the flat portion is formed flat and arranged horizontally. The front side surface of the flat portion is, for example, perpendicular to the axial direction (front-rear direction) of the insertion hole 36 .

The pair of left and right protrusions 46 respectively protrude forward from the first side surface 41a, for example. More specifically, as shown in FIGS. 3 and 5 , each of the protrusions 46 extends substantially linearly in the vertical direction. The front end surface (the front end in the protruding direction) of each protruding portion 46 is formed flat and arranged vertically.

As shown in FIG. 5 , the rear end surface of the right protruding portion 46 is connected to the right engaged portion 48 , and the front end surface of the left protruding portion 46 is connected to the left engaged portion 48 .

As shown in FIG. 5 , the engaging claws 88 of the respective second downward extending portions 87 a are engaged with the respective engaged portions 48 . When the cover member 80 is externally inserted into the bobbin portion 30 , the pair of second downward extending portions 87 a are guided toward the flat portion of the engaged portion 48 along the tapered portion of the corresponding engaged portion 48 .

The protruding length (front-rear dimension) of the flat portion of the engaged portion 48 is set slightly smaller than the protruding length (front-rear dimension) of the engaging claw 88 , for example. In the vertical direction, the height position of the lower surface of the flat portion of the engaged portion 48 is set to be substantially the same as the height position of the upper surface of the engaging claw 88 . The lower surface of the flat portion of the engaged portion 48 is in surface contact with the upper surface of the engaging claw 88 . The front end surface 88a of the engagement claw 88 is in surface contact with the first side surface 41a. In addition, in the front-rear direction, the front end surface of the flat portion of the engaged portion 48 faces a part of the rear end surface of the flat plate portion of the second downward extending portion 87a.

Moreover, as shown in FIG. 3, the protrusion length (front-back dimension) of each protrusion part 46 is set to the dimension larger than the protrusion length of the flat part of each to-be-engaged part 48, for example. The vertical dimension of each protruding portion 46 is set to be the same as the vertical dimension of each engaged portion 48 . Moreover, as shown in FIG. 5, the left side surface of the right protrusion part 46 and the right side surface of the right 2nd downward extension part 87a mutually oppose in the left-right direction. As a result, the movement of the second downward extending portion 87 a on the right side in the left-right direction to the right side of the corresponding protrusion portion 46 can be restricted. Similarly, in the left-right direction, the right side surface of the left protruding portion 46 and the left side surface of the left second downward extending portion 87a are opposed to each other. As a result, the second downward extending portion 87 a on the left side in the left-right direction can be restricted from moving to the left side of the corresponding protrusion portion 46 . That is, the engagement of the engagement claw 88 with respect to the to-be-engaged portion 48 can be maintained satisfactorily.

In addition, as shown in FIG. 6 , in the case of this embodiment, in the front-rear direction, the separation distance between the front end surface 88a of the engaging claw 88 of the second downward extending portion 87a and the flat surface 86b of the positioning projection portion 86 is set. It is set to be approximately the same as the front and rear dimensions of the base 12 . Thus, by engaging the engaging pawls 88 with the corresponding engaged portions 48 , the positioning protrusions 86 can realize a structure in which the positioning protrusions 86 press the inner surface 12 a of the base portion 12 of the first magnetic core 11 a toward the first side surface 41 a.

Similarly, as shown in FIGS. 2 , 5 , 6 and 7 , on the second side surface 42 a (the rear side surface of the second flange portion 42 ), a pair of left and right which engage with the second downward extending portion 87 b are respectively formed The engaged portion 48 and a pair of right and left protruding portions 46 connected to the engaged portion 48 .

Each to-be-engaged part 48 on the side of the second side surface 42a is formed, for example, in a shape substantially symmetrical to the front-to-back side of each of the to-be-engaged parts 48 on the side of the first side surface 41a. Therefore, each engaged portion 48 on the side of the second side surface 42a protrudes rearward from the second side surface 42a, and the engaged portion 48 includes a tapered portion and a flat portion.

As shown in FIG. 5 , the engaging claws 88 of the respective second downward extending portions 87 b are engaged with the respective engaged portions 48 . When the cover member 80 is externally inserted into the bobbin portion 30 , the pair of second downward extending portions 87 b are guided toward the flat portion of the engaged portion 48 along the tapered portion of the corresponding engaged portion 48 . The lower surface of the flat portion of the engaged portion 48 is in surface contact with the upper surface of the engaging claw 88 . The front end surface 88a of the engagement claw 88 is in surface contact with the second side surface 42a.

Moreover, as shown in FIG. 4, the left side surface of the right protrusion part 46 and the right side surface of the right 2nd downward extension part 87b mutually oppose in the left-right direction. Thereby, the movement of the 2nd downward extension part 87b on the right side in the left-right direction to the right position rather than the corresponding protrusion part 46 can be restrained. Similarly, in the left-right direction, the right side surface of the left protruding portion 46 and the left side surface of the left second downward extending portion 87b are opposed to each other. As a result, the second downward extending portion 87 b on the left side in the left-right direction can be restricted from moving to the left side of the corresponding protrusion portion 46 . That is, the engagement of the engagement claw 88 with respect to the to-be-engaged portion 48 can be maintained satisfactorily.

Moreover, in the case of this embodiment, as shown in FIG.3 and FIG.5, the coil component 100 has the 2nd adhesive agent 92 apply|coated to the upper surface of the 1st magnetic core 11a. The first magnetic core 11 a (and thus the second magnetic core 11 b ) is fixed to the cover member 80 and the bobbin portion 30 by the second adhesive 92 , respectively.

As shown in FIG. 1, the 2nd adhesive agent 92 is apply|coated substantially linearly along the upper surface and the 1st side surface 41a of the base part 12 of the 1st magnetic core 11a in the left-right direction. The second adhesive 92 includes, for example, a part of the engaging claws 88 of the pair of second downward extending portions 87 a and a portion of the lower end portion of the downward extending portion 84 . Therefore, the engagement claws 88 and the corresponding engaged portions 48 can be maintained satisfactorily, and the relative displacement of the downward extending portions 84 (and thus the positioning protrusions 86 ) with respect to the first magnetic core 11 a can be suppressed.

Moreover, similarly, as shown in FIG.5 and FIG.6, the coil component 100 has the buffer material 94 apply|coated to the upper surface of the 2nd magnetic core 11b. The second magnetic core 11b (and thus the first magnetic core 11a) is fixed to the cover member 80 and the bobbin portion 30 by the buffer material 94, respectively.

The buffer material 94 is applied substantially linearly along the upper surface and the second side surface 42a of the base portion 12 of the second magnetic core 11b in the left-right direction. The buffer material 94 includes, for example, a part of the engaging claws 88 of the pair of second downward extending portions 87b. In addition, a part of the buffer material 94 may enter the gap 96 between the 2nd side surface 42a and the inner surface 12a of the 2nd magnetic core 11b, for example.

In the case of this embodiment, the 2nd adhesive agent 92 is comprised by the hard resin material, for example. Thereby, the 1st magnetic core 11a can be fixed favorably with respect to the cover member 80 and the bobbin part 30, respectively.

On the other hand, the buffer material 94 is comprised by, for example, a soft resin material. Accordingly, even if vibration is applied to the coil component 100 , the vibration can be favorably absorbed by the buffer material 94 . That is, the structural strength of the coil component 100 can be improved.

The coil component 100 of the present embodiment is configured as described above. As an example, such a coil component 100 can be used as a high withstand voltage pulse transformer. However, the application of the coil component 100 is not limited to this example.

The assembly of the coil component 100 can be performed as follows, for example.

First, each winding 71 of the coil 70 (the first coil 70 a and the second coil 70 b ) is wound around the cylindrical portion 31 of the bobbin portion 30 . The ends of the windings 71 are respectively wound on the winding terminals 66 of the corresponding terminal parts 60 , and fixed by welding or soldering.

Next, the insertion portion 15 of the first magnetic core 11 a is inserted into the insertion hole 36 from the opening on the front side of the insertion hole 36 , and the insertion portion 15 of the second magnetic core 11 b is inserted into the insertion hole 36 from the opening of the insertion hole 36 . The opening on the rear side is inserted into the insertion hole 36 .

Next, the cover member 80 is covered on the bobbin portion 30 from above. In this case, for example, the engaging claws 88 of the respective second downward extending portions 87 are first arranged along the tapered portions of the corresponding engaged portions 48 , and the lower surfaces or front end surfaces of the engaging claws 88 and the engaged portions 48 are flat. The upper end of the part is arranged in contact with each other. In addition, the inclined surface 86a of the positioning protrusion 86 is arranged in point contact or line contact with the base 12 of the first magnetic core 11a. Then, the cover member 80 is pressed downward with respect to the main body member 20 until the engaging claws 88 of the respective second downward extending portions 87 are engaged with the corresponding engaged portions 48 . At this time, the engaging claw 88 of the second downward extending portion 87 slides downward along the inclined surface of the corresponding tapered portion of the engaged portion 48 and reaches the lower surface of the flat portion of the engaged portion 48 . The base portion 12 of the first core 11a slides toward the bobbin portion 30 along the inclined surface 86a of the positioning protrusion 86, and the inner surface 12a of the base portion 12 is in surface or line contact with the first side surface 41a. In this state, the flat surface 86b is in surface contact with the outer surface 12b of the base portion 12 .

In this way, the cover member 80 is externally inserted into the bobbin portion 30 .

Next, the first magnetic core 11a and the second magnetic core 11b are fixed to each other by the first adhesive 91, and the magnetic core 10 is fixed to the bobbin portion 30 and the cover by the second adhesive 92 and the buffer material 94, respectively. The parts 80 are respectively fixed.

Here, as described above, the positioning protrusions 86 are arranged along the outer surface of the outer arrangement portion (outer surface 12 b of the base portion 12 ), and restrict the outer arrangement portion from being away from the bobbin portion 30 in the axial direction of the insertion hole 36 . Therefore, for example, the positional relationship between the first magnetic core 11a and the second magnetic core 11b and the desired positional relationship between the magnetic core 10 and the bobbin portion 30 can be easily realized without using a dedicated jig. That is, the fixing of the first magnetic core 11 a and the second magnetic core 11 b and the fixing of the magnetic core 10 to each of the bobbin portion 30 and the cover member 80 can be performed without interference from the jig. Therefore, the ease of manufacture of the coil component 100 can be improved.

In this way, the coil component 100 can be obtained.

<Variation>

Next, a modification will be described using FIGS. 9 to 11( c ).

The coil component 100 of the present modification is different from the coil component 100 of the above-described embodiment in the points described below, and has the same configuration as the coil component 100 of the above-described embodiment in other points.

In the embodiment, the example in which the positioning protrusion 86 has the inclined surface 86 a has been described, but in the case of the present invention, as an example, the positioning protrusion 86 does not have the inclined surface 86 a as shown in FIGS. 9 to 11( c ). The inclined surface 86 a and the vertically arranged flat surface 86 b constitute the rear end surface of the positioning protrusion 86 .

The flat surface 86b is in surface contact with the outer surface 12b of the first magnetic core 11a.

The front and rear dimensions of the positioning protrusions 86 are substantially constant regardless of the position in the vertical direction, for example.

According to such a configuration, the positioning protrusions 86 also restrict the outer arrangement portion from being separated from the bobbin portion 30 in the axial direction of the insertion hole 36 . Therefore, a desired positional relationship between the bobbin portion 30 and the magnetic core 10 can be easily achieved.

As mentioned above, although each embodiment has been described with reference to the drawings, these are examples of the present invention, and various configurations other than those described above can be adopted.

For example, in the above, the example in which the positioning protrusions 86 are arranged along the outer surface of the outer arrangement portion to restrict the outer arrangement portion from being away from the bobbin portion 30 in the axial direction of the insertion hole 36 has been described. However, in the present invention, for example, as shown in FIG. 12 , the positioning protrusions 86 may be arranged between the inner surface of the outer arrangement portion and the bobbin portion 30 to restrict the outer arrangement portion in the axial direction of the insertion hole 36 . The bobbin portion 30 is approached above. In this case, as an example, the positioning protrusion 86 is a plate that elastically biases the outer arrangement portion of the first magnetic core 11 a toward the side opposite to the bobbin portion 30 in the axial direction of the insertion hole 36 . reed. However, the positioning protrusion portion 86 may be a spacer inserted between the inner surface of the outer arrangement portion and the bobbin portion 30 .

In addition, the present invention is not limited to the configuration in which the cover member 80 has the positioning protrusions 86 as described above, and the bobbin portion 30 may have the positioning protrusions 86 . In this case, the positioning protrusions 86 are provided on, for example, the terminal holding portion 50 or the flange portion 40 of the bobbin portion 30 , and are arranged between the inner surface of the outer arrangement portion and the bobbin portion 30 to restrict the outer arrangement portion from being The insertion hole 36 is close to the bobbin portion 30 in the axial direction. More specifically, as an example, the positioning protrusion 86 is a plate that elastically biases the outer arrangement portion of the first magnetic core 11 a toward the side opposite to the bobbin portion 30 in the axial direction of the insertion hole 36 . reed.

Even with such a configuration, a desired positional relationship between the magnetic core 10 and the bobbin portion 30 can be achieved.

In the above description, an example in which the magnetic core 10 is configured to have two E-shaped cores has been described, but the present invention is not limited to this example, and the magnetic core 10 may be configured to include an E-shaped core and an I-shaped core.

Further, the magnetic core 10 may be configured to have two T-shaped cores, or a T-shaped core and an I-shaped core. In this case, the overall shape of the magnetic core 10 is H-shaped in plan view.

In the above description, the example in which the magnetic core 10 has two members (the first magnetic core 11 a and the second magnetic core 11 b ) has been described, but the magnetic core 10 may be integrated as a whole, or it may be configured to have three components. more than one part.

The present embodiment includes the following technical ideas.

(1) A coil component including a bobbin portion having an insertion hole, and a magnetic core having an insertion portion inserted into the insertion hole and disposed outside the bobbin portion a coil wound around the bobbin portion; and a cover member covering the upper portion of the bobbin portion, the cover member having a positioning protrusion for positioning the magnetic core, The positioning protrusion is arranged along the outer surface of the outer arrangement portion, and restricts the outer arrangement portion from being away from the bobbin portion in the axial direction of the insertion hole, or is arranged on the outer arrangement portion. Between the inner surface and the bobbin portion, the outer arrangement portion is restricted from approaching the bobbin portion in the axial direction of the insertion hole.

(2) The coil component according to (1), wherein the positioning projection portion presses the outer arrangement in a direction in which the outer arrangement portion approaches the bobbin portion in the axial direction of the insertion hole the outer surface of the part.

(3) The coil component according to (2), wherein the magnetic core includes a first magnetic core and a second magnetic core which are arranged to face each other and are combined with each other, the first magnetic core and the second magnetic core At least one of the cores has the insertion portion, both the first magnetic core and the second magnetic core have the outer arrangement portion, and the positioning protrusion portion arranges the outer side of the first magnetic core The bobbin portion is pressed against the bobbin portion, and the surface of the outer arrangement portion of the first magnetic core facing the outer arrangement portion of the second magnetic core and the bobbin A gap is formed between a surface of the outer arrangement portion of the second magnetic core that faces the outer arrangement portion of the first magnetic core and the bobbin portion.

(4) The coil member according to (2) or (3), wherein the cover member has: a top surface part covering the upper part of the bobbin part; and a downward extending part extending from the top surface part The peripheral edge portion of the extending portion extends downward, and the positioning projection portion is formed on the lower end portion of the downward extending portion.

(5) The coil component according to (4), wherein, in the positioning protrusions, a surface facing the outer arrangement portion of the first magnetic core has a surface facing upward and approaching the outer arrangement portion. sloping surface inclined in the direction.

(6) The coil member according to (4) or (5), wherein the cover member has a second downward extending portion extending downward from a peripheral edge portion of the top surface portion, and the second downward extending portion has An engaging claw is engaged with the bobbin portion.

(7) The coil member according to (6), wherein the cover member has a pair of the second downward extending portions sandwiching the downward extending portion.

(8) The coil member according to (6) or (7), wherein the cover member includes the bobbin portion that is arranged on the same side as the downwardly extending portion with the bobbin portion as a reference. A second lower extension part; and the second lower extension part arranged on the opposite side of the lower extension part with the bobbin part as a reference.

(9) A coil component including a bobbin portion having an insertion hole, and a magnetic core having an insertion portion inserted into the insertion hole and disposed outside the bobbin portion an outer arrangement part of The positioning protrusion is arranged between the inner surface of the outer arrangement portion and the bobbin portion, and restricts the outer arrangement portion from approaching the bobbin portion in the axial direction of the insertion hole .

Claims (8)

1. A coil component having:

a bobbin part having a through insertion hole;

a magnetic core having an insertion portion inserted into the insertion hole and an outer arrangement portion arranged outside the bobbin portion;

a coil wound around the bobbin; and

a cover member covering an upper portion of the bobbin part,

the cover member has a positioning projection for positioning the magnetic core,

the positioning protrusion is disposed along an outer surface of the outer arrangement portion, and restricts the outer arrangement portion from moving away from the bobbin portion in the axial direction of the through-insertion hole, or is disposed between an inner surface of the outer arrangement portion and the bobbin portion, and restricts the outer arrangement portion from moving closer to the bobbin portion in the axial direction of the through-insertion hole.

2. The coil component of claim 1,

the positioning protrusion presses an outer surface of the outer arrangement portion in a direction in which the outer arrangement portion approaches the bobbin portion in an axial direction of the through insertion hole.

3. The coil component of claim 2, wherein,

the magnetic cores include a 1 st magnetic core and a 2 nd magnetic core which are arranged opposite to each other and combined with each other,

at least one of the 1 st magnetic core and the 2 nd magnetic core has the insertion portion,

both the 1 st magnetic core and the 2 nd magnetic core have the outer arrangement portion,

the positioning protrusion presses the outer arrangement portion of the 1 st magnetic core toward the winding tube portion,

a surface of the outer arrangement portion of the 1 st magnetic core facing the outer arrangement portion of the 2 nd magnetic core is in contact with the winding tube portion,

a gap is formed between a surface of the outer arrangement portion of the 2 nd core, which is opposed to the outer arrangement portion of the 1 st core, and the bobbin portion.

4. The coil component of claim 2 or 3,

the cover member has:

a top surface portion covering an upper portion of the bobbin portion; and

a downward extending portion extending downward from a peripheral edge portion of the top surface portion,

the positioning protrusion is formed at a lower end of the lower extension.

5. The coil component of claim 4, wherein,

in the positioning protrusion, a surface facing the outer arrangement portion of the 1 st magnetic core has an inclined surface inclined upward and toward the outer arrangement portion.

6. The coil component of claim 4 or 5, wherein,

the cover member has a 2 nd downward extending portion extending downward from a peripheral edge portion of the top surface portion,

the 2 nd lower extension part is provided with a clamping claw,

the clamping claw is clamped with the winding tube part.

7. The coil component of claim 6,

the cover member has a pair of the 2 nd lower extensions sandwiching the lower extension.

8. The coil component of claim 6 or 7,

the cover member has:

the 2 nd lower extension part disposed on the same side as the lower extension part with reference to the bobbin part; and

and a 2 nd lower extension portion disposed on the opposite side of the lower extension portion with respect to the bobbin portion.

Images