JP6724559B2 - Coil parts and power supply - Google Patents

Description

The present invention relates to a coil component and a power supply device.

A coil component including a coil winding and a coil bobbin is used in a transformer or the like of a power supply device incorporated in a charger for a vehicle battery. The coil bobbin is used for the purpose of positioning the coil windings and at the same time preventing short-circuiting between the coil windings and other parts. For example, in Patent Document 1, after inserting the coil bobbin into the coil winding in a state where the convex portion provided on the outer periphery of the cylindrical coil bobbin corresponds to the cut portion of the coil winding, A configuration is shown in which the protrusion provided on the coil bobbin regulates the movement of the coil winding by rotating the coil winding with respect to the bobbin.

JP, 2012-222153, A

Due to the design of the power supply device, there is a case where a transformer or the like having a magnetic core having a rectangular cross section of a leg is required. In this case, the coil winding wound around the leg is often rectangular in plan view, and the bobbin inserted in the coil winding is often rectangular in plan view. However, the configuration described in Patent Document 1 is a cylindrical coil bobbin, and it is premised that the coil winding is rotatable with respect to the bobbin. Therefore, the configuration described in Patent Document 1 cannot be applied to a bobbin whose outer shape in plan view is rectangular.

The present invention has been made in view of the above, and a coil component and a power supply device that can appropriately attach and hold a coil winding even if the bobbin has a main body whose outer shape is substantially rectangular in a plan view. The purpose is to provide.

In order to achieve the above-mentioned object, a coil component according to an aspect of the present invention is an insulating bobbin and a plane that winds around the bobbin along an axis and has a main surface that is substantially perpendicular to the axis. A first coil winding in the form of a flat plate, which extends along the axis, and the bobbin has a substantially rectangular outer shape in plan view, and the bobbin has two sets of opposing faces arranged about the axis. A cylindrical main body portion formed by connecting a pair of side wall portions, and protruding outward from the main body portion with respect to the axis, extending along a plane orthogonal to the axis, and the main surface is A flange portion in contact with the main surface of the first coil winding, and, in a state where the flange portion is in contact with the first coil winding, within a movement range along a plane orthogonal to the axis, A first guide portion that allows movement of the pair of side wall portions of the pair of side wall portions to a mounting position of the first coil winding along a first direction that is the same as the width direction of the pair of side wall portions; Restricting the movement of the first coil winding in the first direction in a state where the flange portion is in contact with the first coil winding and is arranged at the mounting position along the axial direction. A first restricting wall portion and a main surface of the flange portion that is in contact with the first coil winding, and the flange portion is in contact with the first coil winding and is disposed at the mounting position. A first locking portion for restricting movement of the first coil winding in a direction opposite to the first direction, and the flange portion abutting on the first coil winding and arranged at the attachment position. A first regulating claw portion that is provided to face the flange portion with the first coil winding interposed therebetween and that regulates movement of the first coil winding in the extending direction of the axis. ..

According to the above coil component, in the state where the first coil winding is in contact with the flange portion of the bobbin, it is moved along the first direction to the attachment position, and when it is placed in the attachment position, The movement of the first coil winding in the first direction is regulated by the first regulation wall portion extending along the axial direction. Further, the first locking portion provided on the flange portion of the bobbin restricts the movement of the first coil winding in the direction opposite to the first direction. As described above, in the above coil component, when the bobbin has the main body portion having a substantially rectangular outer shape in plan view, the first coil winding abutting against the flange portion is moved in the first direction. By moving the bobbin, the bobbin can be properly mounted, and after the first coil winding is placed at the mounting position, the first coil winding is moved in the first direction and moved in the axial direction. Since the movement is restricted, the coil winding can be preferably held.

Here, when the first coil winding protrudes from the flange portion and the first coil winding in the state of contacting the flange portion moves in the first direction, the first coil winding is It is possible to allow the wire to straddle the upper part of the wire and to restrict the movement of the first coil winding in the direction opposite to the first direction after the movement.

With the above configuration, when the first coil winding is moved to the mounting position along the first direction, the first coil winding is allowed to cross over the first locking portion, After the movement, that is, after the first coil winding is attached to the attachment position, the movement in the direction opposite to the first direction is restricted. As a result, after the first coil winding is placed at the mounting position, the movement of the first coil winding in the first direction and the movement in the axial direction are restricted, so that the coil winding is held appropriately. It becomes possible.

Further, the first coil winding has a first fitting portion that fits with the first locking portion at a position facing the first locking portion in a state of being arranged at the attachment position, The first locking portion is in a state of being in contact with the flange portion until the first locking portion and the first fitting portion of the first coil winding are fitted to each other. Is allowed to move in the first direction, and after the first locking portion and the first fitting portion of the first coil winding are fitted to each other, the It is possible to adopt a mode in which the movement in the direction opposite to the direction of 1 is restricted.

With the above configuration, when the first coil winding is moved to the attachment position along the first direction, the first locking portion and the first fitting portion of the first coil winding fit together. The movement of the first coil winding in the first direction is allowed until the two match, and after the first locking portion and the first fitting portion are fitted to each other, that is, the first coil winding is placed at the mounting position. After mounting, movement in the direction opposite to the first direction is restricted. As a result, after the first coil winding is placed at the mounting position, the movement of the first coil winding in the first direction and the movement in the axial direction are restricted, so that the coil winding is held appropriately. It becomes possible.

Here, the first coil winding has a plurality of turns by a plurality of winding members having one or more turns being arranged in parallel in the axial direction with a space therebetween. The bobbin may have an aspect in which a side surface of the main body has a convex portion arranged at least in a part between the adjacent winding members.

As described above, when the first coil winding has the number of turns of a plurality of turns constituted by the plurality of winding members, the convex portion arranged between the winding members is provided on the side surface of the main body of the bobbin. As a result, it is possible to prevent a short circuit between the winding members, and it is possible to more appropriately hold the coil winding.

In addition, the first coil winding has a first heat dissipation terminal portion that is thermally coupled to another component, and the bobbin has a first heat dissipation terminal support portion that supports the heat dissipation terminal portion. can do.

As described above, the first coil winding has the first radiating terminal portion, and the bobbin includes the first radiating terminal supporting portion that supports the radiating terminal portion, so that heat generation in the first coil winding can be efficiently performed. Can be released to the outside.

The second coil further includes a flat coil-shaped second coil winding wound around the bobbin along the axis and having a main surface extending along a plane substantially perpendicular to the axis. The main surface of the winding contacts the main surface of the flange portion on the opposite side of the contact surface of the first coil winding, and the bobbin has the flange portion contacting the second coil winding. A second direction within the range of movement along a plane orthogonal to the axis in a contact state and in the same direction as the width direction of one of the pair of side wall portions of the two pairs of side wall portions; A second guide portion that allows movement of the first coil winding along the axis to a mounting position, and the flange portion abuts the second coil winding and extends to the mounting position. In the arranged state, the second regulating wall portion that regulates the movement of the second coil winding in the first direction and the main surface of the flange portion that abuts the second coil winding are provided. A second locking portion that restricts movement of the second coil winding in a direction opposite to the second direction in a state where the flange portion is in contact with the second coil winding and is disposed at the mounting position. And, in a state where the flange portion is in contact with the second coil winding and is disposed at the mounting position, the flange portion is provided so as to face the flange portion with the second coil winding interposed therebetween, and the extension of the axis line. And a second regulating claw portion that regulates the movement of the second coil winding in the direction.

According to the above coil component, in the state where the second coil winding is in contact with the flange portion of the bobbin, it is moved along the second direction to the attachment position, and when it is placed in the attachment position, The movement of the second coil winding in the second direction is restricted by the second restriction wall portion that extends along the axial direction. Further, the second locking portion provided on the flange portion of the bobbin restricts the movement of the second coil winding in the direction opposite to the second direction. Thus, in the above coil component, not only the first coil winding but also the second coil winding can be moved in the second direction by moving the second coil winding abutting against the flange portion. , The bobbin can be properly mounted, and after the second coil winding is arranged at the mounting position, the movement of the second coil winding in the second direction and the movement in the axial direction are restricted. Therefore, it is possible to preferably hold the coil winding.

Further, the second locking portion projects from the flange portion, and when the second coil winding in the state of being in contact with the flange portion moves in the second direction, the second coil winding is formed. Is allowed to straddle the upper side of the coil, and after the movement, the movement of the second coil winding in the direction opposite to the second direction can be restricted.

With the above configuration, when the second coil winding is moved to the mounting position along the second direction, the second coil winding is allowed to cross over the second locking portion, After the movement, that is, after the second coil winding is attached to the attachment position, the movement in the direction opposite to the second direction is restricted. As a result, after the second coil winding is placed at the mounting position, movement of the second coil winding in the second direction and movement in the axial direction are restricted, so that the coil winding is held appropriately. It becomes possible.

Further, the second coil winding has a second fitting portion that fits with the second locking portion at a position facing the second locking portion in a state in which the second coil winding is arranged at the attachment position, The second locking portion is in a state of being in contact with the flange portion until the second locking portion and the second fitting portion of the second coil winding are fitted to each other. Is allowed to move in the second direction, and after the second locking portion and the second fitting portion of the second coil winding are fitted to each other, It is possible to adopt a mode in which movement in the direction opposite to the direction of 2 is restricted.

With the above configuration, when the second coil winding is moved to the attachment position along the second direction, the second locking portion and the second fitting portion of the second coil winding fit together. Until the second coil winding is moved, the second coil winding is allowed to move in the second direction, and after the second locking portion and the second fitting portion are fitted to each other, that is, the second coil winding is placed at the mounting position. After mounting, movement in the direction opposite to the second direction is restricted. As a result, after the second coil winding is placed at the mounting position, movement of the second coil winding in the second direction and movement in the axial direction are restricted, so that the coil winding is held appropriately. It becomes possible.

Further, the second coil winding has a plurality of turns by arranging a plurality of winding members having one or more turns in the axial direction with a space between them. The bobbin may be configured such that a side surface of the main body portion has a convex portion arranged at least in a part between the adjacent winding members.

As described above, when the second coil winding has the number of turns of a plurality of turns constituted by the plurality of winding members, the convex portion arranged between the winding members is provided on the side surface of the main body of the bobbin. As a result, it is possible to prevent a short circuit between the winding members, and it is possible to more appropriately hold the coil winding.

The second coil winding has a second heat radiating terminal portion that is thermally coupled to another component, and the bobbin has a second heat radiating terminal supporting portion that supports the heat radiating terminal portion. can do.

As described above, the second coil winding has the first heat radiating terminal portion, and the bobbin has the second heat radiating terminal supporting portion that supports the heat radiating terminal portion, so that heat generation in the second coil winding can be efficiently performed. Can be released to the outside.

A power supply device according to an aspect of the present invention includes the coil component described above and a housing to which the coil component is attached.

As described above, since the outer shape is substantially rectangular in a plan view, the tubular bobbin and the coil component 5 capable of suitably attaching and holding the coil winding wound around the bobbin are attached. Also in the power supply device including the coil component, it is possible to appropriately hold the coil winding. Moreover, since the coil components are easily assembled, the power supply device can be easily assembled.

ADVANTAGE OF THE INVENTION According to this invention, the coil component and power supply device which can attach and hold|maintain a coil winding suitably are provided even if it is a bobbin which has a main-body part with a substantially rectangular outer shape in planar view.

It is a perspective view which shows a part of power supply device provided with the coil component which concerns on one Embodiment. It is a perspective view which shows a part of power supply device provided with the coil component which concerns on one Embodiment. It is a perspective view of the 1st coil winding wire contained in a coil component. It is a perspective view of the 2nd coil winding wire contained in a coil component. It is a perspective view of a bobbin included in the coil component. It is a perspective view of a bobbin included in the coil component. It is a front view of the bobbin included in the coil component. It is a rear view of the bobbin included in the coil component. It is a figure explaining the attachment method to the bobbin of the 1st coil winding. It is a figure explaining the attachment method to the bobbin of the 1st coil winding. It is a figure explaining the attachment method to the bobbin of the 1st coil winding. It is a figure explaining the attachment method to the bobbin of the 2nd coil winding. It is a figure explaining the attachment method to the bobbin of the 2nd coil winding. It is a figure explaining the attachment method to the bobbin of the 2nd coil winding. It is a perspective view of a coil component. It is a perspective view of a coil component. It is an exploded perspective view of a power supply device. It is a perspective view explaining the coil component concerning a modification. It is a perspective view explaining the coil component concerning a modification. It is a perspective view explaining the coil component concerning a modification.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same elements will be denoted by the same reference symbols, without redundant description. For the sake of explanation, an XYZ orthogonal coordinate system is shown in each drawing. In addition, the Z-axis positive side may be described as the upper side and the Z-axis negative side as the lower side.

(Outline of coil parts)
A configuration of a coil component and a power supply device including the coil component according to the present embodiment will be described with reference to FIGS. 1 and 2. 1 and 2 show a part of a power supply device including a coil component according to the present embodiment. Examples of the power supply device described in the present embodiment include a vehicle-mounted switching power supply device. For the sake of explanation, the XYZ axes are shown in each figure.

The power supply device 1 is configured to include a housing 2 and a choke 3 housed inside the housing 2. The housing 2 is composed of a box-shaped base plate 21 and a lid portion that covers the base plate 21, but in FIG. 1, only a part of the base plate 21 side is shown. The front surface of the bottom surface of the base plate 21 of the housing 2 is provided with irregularities for mounting electronic components. Further, since a large current flows and the temperature inside the housing 2 becomes high, air-cooled fins 22 are attached to the back side of the bottom surface of the base plate 21. Further, on the main surface of the base plate 21, column portions 23A and 23B extending upward in the drawing (Z axis positive side) are provided.

As shown in FIG. 3, the choke 3 includes a coil component 5 and a pair of magnetic core members 6A and 6B. In addition, the coil component 5 is configured to include a first coil winding 7, a second coil winding 8, and a bobbin 9. Each of the first coil winding 7 and the second coil winding 8 is configured to include a plate-shaped winding member having an end ring shape, and a plurality of winding members are arranged side by side with a space therebetween. They are connected so as to have a predetermined winding direction along the axis A. The first coil winding 7 and the second coil winding 8 are attached to the bobbin 9 to form the coil component 5. The choke 3 is formed by disposing the pair of magnetic core members 6A and 6B so as to sandwich the coil component 5. The housing 2 is thermally coupled to the choke 3 on the main surface of the base plate 21 and the pillar portions 23A and 23B (see FIG. 2).

Hereinafter, each component of the choke 3 will be described, and an assembling method of the power supply device 1 including the choke 3 will be described.

(First coil winding)
The first coil winding 7 will be described with reference to FIG. FIG. 3 is a perspective view illustrating the configuration of the first coil winding 7.

As shown in FIG. 3, the first coil winding 7 has a main surface extending along a plane (XY plane) substantially perpendicular to the direction of the axis A, has a substantially rectangular shape in plan view, and has an end. It is configured to have an annular first winding member 71. The first winding member 71 has a rectangular opening 701 in the center. The first winding member 71 is a one-turn winding that winds around the axis A, and slits extending from the inner circumference to the outer circumference are formed between one end and the other end.

In addition, a first connection terminal 72 that projects outward from the axis A of the opening 701 is integrally provided at one end of the first winding member 71. The other end of the first winding member 71 is integrally provided with a second connection terminal 73 that projects outward from the axis A of the opening 701. The second connection terminal 73 is connected to the second coil winding 8.

In the first coil winding 7 having the above configuration, the first connection terminal 72 is the start end of the first coil winding 7 and the second connection terminal 73 is the end of the first coil winding 7. When a current is input to the first connection terminal 72, the current flows through the first winding member 71 and is output from the second connection terminal 73.

Further, in the vicinity of the first connection terminal 72 of the first winding member 71 of the first coil winding 7, the protruding portion 75 protruding toward the other end side of the first winding member 71 so as to narrow the gap between the slits. Have. When the first coil winding 7 is attached to the bobbin 9, the protruding portion 75 comes into contact with a restricting claw portion 962 (first restricting claw portion) of the bobbin 9 to be described later, so that the first coil winding 7 Is restricted from moving in the vertical direction (Z-axis direction).

The first coil winding 7 can be formed by punching a single plate material (copper plate, aluminum plate, etc.) having high electric conductivity. However, the first coil winding 7 is not limited to such a bending coil, and may be, for example, one in which the coil member and the connecting portion are screwed together, or one that is welded. Alternatively, they may be fixed with rivets.

(Second coil winding)
The second coil winding 8 will be described with reference to FIG. FIG. 4 is a perspective view illustrating the configuration of the second coil winding 8.

As shown in FIG. 4, the second coil winding 8 has a main surface extending along a plane (XY plane) substantially perpendicular to the direction of the axis A, has a substantially rectangular shape in a plan view, and has an end. The second winding member 81 and the third winding member 82 are formed in a substantially annular shape and are arranged in parallel with each other with a space therebetween and are connected so as to be continuous in a predetermined winding direction. The second winding member 81 and the third winding member 82 respectively have circular openings 801 and 802 in the center. The second winding member 81 and the third winding member 82 are overlapped so that the openings 801 and 802 communicate with each other. The second winding member 81 and the third winding member 82 are one-turn windings wound around the axis A, respectively, and between the one end and the other end from the inner circumference. A slit extending to the outer circumference is formed. That is, the second coil winding 8 is a two-turn winding that winds around the axis A.

The second winding member 81 and the third winding member 82 generally correspond to the shape of the first winding member 71 of the first coil winding 7 in a plan view. That is, the openings 701, 801, and 802 of the first winding member 71, the second winding member 81, and the third winding member 82 are substantially the same, and the first winding member 71, the second winding member 81, and The outer shape of the third winding member 82 is also substantially the same. However, the mounting position of the connection terminal and the position of the slit provided between the one end and the other end of the winding member are different from each other.

A third connection terminal 83 protruding outward from the axis A of the opening 801 is integrally provided at one end of the second winding member 81. The third connection terminal 83 is connected to the second connection terminal 73 of the first coil winding 7. The other end of the second winding member 81 is connected to one end of the third winding member 82 via a U-shaped connecting portion 84. The other end of the third winding member 82 is integrally provided with a fourth connection terminal 85 protruding outward from the axis A of the opening 802. The third connection terminal 83 and the fourth connection terminal 85 are provided so as to project to the Y-axis negative side with respect to the second winding member 81 and the third winding member 82, respectively.

In the second coil winding 8 having the above configuration, the third connection terminal 83 is the start end of the second coil winding 8 and the fourth connection terminal 85 is the end of the second coil winding 8. When a current is input to the third connecting terminal 83, the current flows in the order of the second winding member 81, the connecting portion 84, and the third winding member 82, and is output from the fourth connecting terminal 85.

In addition to the third connection terminal 83, the second winding member 81 of the second coil winding 8 projects outward from the peripheral edge of the second winding member 81 with respect to the axis A and in the X-axis direction. A pair of heat dissipation terminal portions 86A and 86B are integrally provided. The pair of heat dissipation terminal portions 86A and 86B are connected to the X windings from both ends of a portion of the second winding member 81 which extends along the X-axis direction on the side facing the third connection terminal 83 and the fourth connection terminal 85. It projects along the axial direction. Therefore, as shown in FIG. 4 and the like, the heat dissipation terminal portion 86A, the region of the second winding member 81 extending along the X axis direction, and the heat dissipation terminal portion 86B are linear in this order along the X axis direction. Are formed so as to be arranged in the. The heat dissipation terminal portions 86A and 86B are provided to promote heat dissipation from the second winding member 81, which will be described later in detail. The position where the heat dissipation terminal portion 86 is provided is not limited to the above configuration.

In addition, a cutout portion 87 that is formed by cutting out a part of the inner circumference is provided on the inner circumference of the second winding member 81 of the second coil winding 8. The cutout portion 87 restricts the movement of the second coil winding 8 along the direction of the axis A when it is attached to the bobbin 9 described later. The details will be described later.

In the above-mentioned second coil winding 8, the third connecting terminal 83, the second winding member 81, the connecting portion 84, the third winding member 82, and the fourth connecting terminal 85 form a current flow. Function as a department. Further, like the third connection terminal 83 and the fourth connection terminal 85, the heat radiating terminal portions 86A and 86B, which are terminal portions that do not make a connection for inputting/outputting electricity with other components, are the second coil windings. It functions as a heat radiating portion for radiating heat from the wire 8.

The second coil winding 8 having the above configuration can be formed by punching a single plate material (copper plate, aluminum plate, etc.) having high electrical conductivity. The second coil winding 8 is not limited to such a bending coil, and may be, for example, one in which the coil member and the connecting portion are screwed together, or one that is welded. Alternatively, they may be fixed with rivets.

(Bobbin)
Next, the structure of the bobbin 9 will be described with reference to FIGS. 5 and 6 are perspective views of the bobbin 9. Further, FIG. 7 is a front view of the bobbin 9, and FIG. 8 is a rear view of the bobbin 9.

As shown in FIGS. 5 to 8, the bobbin 9 extends along the direction of the axis A of the first coil winding 7 and the second coil winding 8 and has a substantially rectangular outer shape in plan view. 91, a flat plate-shaped flange portion 92 that projects outward from the outer surface of the main body portion 91, a heat dissipation terminal support portion 93 that is formed continuously from one peripheral edge of the flange portion 92 and extends along the X-axis direction, Have.

The bobbin 9 is made of an insulating material, and is made of, for example, PBT (Poly Butylene Terephthalate) resin or PPS (Poly Phenylene Sulfide) resin, which has characteristics such as heat resistance, chemical resistance, flame retardancy, and dimensional stability. It is preferably used because it has excellent properties.

Each part of the bobbin 9 will be described. The main body 91 of the bobbin 9 has an opening 901 extending along the axis A direction and has a substantially rectangular outer shape in a plan view and a tubular shape, but in a cross section perpendicular to the axis A direction. Although it has a rectangular ring shape at the height position where the flange portion 92 is attached, it has a substantially U shape (U shape) at other height positions. The main body portion 91 has two pairs of side wall portions. That is, the main body portion 91 has a pair of flat side wall portions 911 and 913 extending along the axis A direction (Z axis direction) and the X axis direction, and along the axis A direction (Z axis direction) and the Y axis direction. And a pair of flat side wall portions 912 and 914 that extend respectively. The side wall portions 911 and 913 and the side wall portions 912 and 914 are opposed to each other with the axis A interposed therebetween. The pair of side wall portions 911 and 913 and the pair of side wall portions 912 and 914 are connected to each other to form the main body portion 91.

The side wall portion 913 of the main body portion 91 is provided only below the flange portion 92 (Z axis negative side), and the side wall portion 913 is not provided above the flange portion 92 (Z axis positive side). That is, above the flange portion 92, the main body portion 91 has a substantially U-shape (U-shape) formed by the side wall portions 911, 912, and 914. Of these, the widths (lengths in the Y-axis direction) of the side wall portions 912 and 914, which are arranged to face each other with the axis A interposed therebetween, are the Y-axis direction of the opening 701 of the first winding member 71 of the first coil winding 7. Is shorter than the length of. As described above, the main body portion having a substantially rectangular outer shape in a plan view according to the present embodiment does not need to be a tubular body as a whole, but a tubular body in a plan view, and a coil around the main body portion. It suffices if the winding can be wound.

The side wall portion 914 of the main body portion 91 is provided only above the flange portion 92 (Z axis positive side), and the side wall portion 914 is provided below the flange portion 92 (Z axis negative side). Absent. That is, below the flange portion 92, the main body portion 91 has a substantially U-shape (U-shape) formed by the side wall portions 911, 912, and 913. Of these, the widths (lengths in the X-axis direction) of the side wall portions 911 and 913, which are arranged to face each other with the axis A in between, are the opening 801 and the third winding of the second winding member 81 of the second coil winding 8. It is shorter than the length of the wire member 82 in the X-axis direction.

The flange portion 92 of the bobbin 9 projects outward from the outer surfaces of the side wall portions 911, 912, 913, and 914 of the main body portion 91 with respect to the axis A, and forms a plane (XY plane) substantially perpendicular to the direction of the axis A. It is a flat plate-like member that extends along and has a rectangular annular shape in a plan view. The height position to which the flange portion 92 is attached is set based on the thickness (length in the Z-axis direction) of the first coil winding 7 and the second coil winding 8. That is, the length of the main body portion above the flange portion 92 (Z axis positive side) (the length in the Z axis direction) corresponds to the thickness of the first coil winding 7, and the length below the flange portion 92 (Z side). The mounting position of the flange portion 92 with respect to the main body portion 91 is determined such that the length of the main body portion on the negative side of the shaft corresponds to the thickness of the second coil winding 8.

The shape of the flange portion 92 in plan view corresponds to the winding members of the first coil winding 7 and the second coil winding 8. That is, the outer shape of the flange portion 92 is substantially the same as that of the first winding member 71 and the second winding member 81. However, a recess 925 is formed in a part of the outer periphery of the flange 92. The recess 925 is an area formed by cutting out the outer periphery of the flange portion 92 for connecting the second connection terminal 73 of the first coil winding 7 and the third connection terminal 83 of the second coil winding 8. is there. Further, a part of the flange portion 92 overlaps with a heat dissipation terminal support portion 93 described later. This point will be described later.

The main surface of the flange portion 92 on the Z-axis positive side is the upper surface 921, and the main surface on the Z-axis negative side is the lower surface 922. First, each part on the upper surface 921 side of the flange portion 92 will be described, and then each part on the lower surface 922 side of the flange portion 92 will be described.

The upper surface 921 of the flange portion 92, which has a substantially rectangular outer shape, has four peripheral edges, and each of the pair of peripheral edges extending along the Y-axis direction is located above the upper surface 921 (Z A pair of guide portions 941 and 942 protruding toward the (axial positive side) are provided. The guide portion 941 is formed on the upper surface 921 of the flange portion 92 along the peripheral edge portion of the flange portion 92 provided outside the side wall portion 912 of the main body portion 91 with respect to the axis A. The guide portion 942 is formed on the upper surface 921 of the flange portion 92 along the peripheral edge portion of the flange portion 92 provided outside the side wall portion 914 of the main body portion 91 with respect to the axis A. The guide portions 941 and 942 provided to face the peripheral edge of the upper surface of the flange portion 92 have a function of guiding the movement of the first coil winding 7 when the first coil winding 7 is attached to the bobbin 9.

Of the four side peripheral portions on the upper surface 921 of the flange portion 92, the peripheral portion extending along the X-axis direction and opposite to the peripheral edge on the side where the heat dissipation terminal support portion 93 is provided (Y-axis negative side). A locking claw portion 951 (first locking portion) that protrudes upward (on the Z axis positive side) from the upper surface 921 along the peripheral portion is provided on the peripheral portion. The height (length in the Z-axis direction) of the locking claw portion 951 is sufficiently smaller than the thickness (length in the Z-axis direction) of the first winding member 71 of the first coil winding 7, and the first coil winding When the wire 7 is attached to the bobbin 9, the elasticity of the flange portion 92 allows the first coil winding 7 to pass thereabove. This point will be described later.

Further, on the side of the upper surface 921 of the flange portion 92, a corner portion where the side wall portion 911 and the side wall portion 914 are continuous is attached to the side wall portion 911 and the upper surface 921 along the axis A direction (Z axis direction). A key-shaped restricting portion 96 extending in the vertical direction is provided. The restricting portion 96 includes a rod-shaped portion 961 extending along the direction of the axis A, and a restricting claw 962 (first restricting claw portion) protruding from the upper end (positive side of the Z axis) of the rod-shaped part 961 toward the side wall 914. Have and. The rod-shaped portion 961 of the restriction portion 96 has a shape corresponding to the slit formed in the first winding member 71 of the first coil winding 7. The height (length in the Z-axis direction) of the rod-shaped portion 961 is set according to the first winding member 71 of the first coil winding 7. That is, the distance between the lower surface (the surface on the Z axis negative side) of the restricting claw portion 962 and the upper surface 921 of the flange portion 92 is substantially the same as or more than the thickness of the first winding member 71 (the length in the Z axis direction). Is also getting bigger.

The lower surface 922 of the flange portion 92 has four peripheral edges, but of the pair of peripheral edges extending along the Y-axis direction, the lower surface 922 is located below the lower surface 922 along the peripheral edge at a position that is the back surface of the guide portion 942. An outer wall portion 97 (second regulation wall portion) that protrudes toward the Z-axis negative side is provided. The outer wall portion 97 extends downward along the axis A direction (Z-axis direction), and its end portion is at the same height position as the lower end of the main body portion 91. The width (length in the Y-axis direction) of the outer wall portion 97 is not particularly limited, but in the bobbin 9 of the present embodiment, it corresponds to the length of the peripheral edge of the flange portion 92. Further, from the end portion of the outer wall portion 97, a regulation claw portion 971 (second regulation claw portion) protruding toward the main body portion 91 side (that is, the axis A side) is formed. Further, a regulation claw portion 972 (second regulation claw portion) is also formed between the end portion of the outer wall portion 97 and the lower surface 922 of the flange portion 92. The restriction claws 971 and 972 each extend along the Y-axis direction. The height position of the restriction claw portion 972 is provided so as to be located between the second winding member 81 and the third winding member 82 when the second coil winding 8 is attached to the bobbin 9.

In addition, the lower surface 922 of the flange portion 92 is located below the lower surface 922 along the peripheral edge portion at a position which is the back surface of the guide portion 941 among the pair of peripheral edge portions extending along the Y-axis in the peripheral edge portions of the four sides (Z. A locking claw portion 952 (second locking portion) that protrudes toward the shaft negative side is provided. The height (length in the Z-axis direction) of the locking claw portion 952 is sufficiently smaller than the thickness (length in the Z-axis direction) of the second winding member 81 of the second coil winding 8, and the second coil winding When the wire 8 is attached to the bobbin 9, the elasticity of the flange portion 92 allows the second coil winding 8 to pass thereabove. This point will be described later.

Further, from the end of the side wall 912 of the main body 91 on the side facing the locking claw 952, a regulation claw 973 (second regulation claw) protruding outward with respect to the axis A is formed. Further, between the end portion of the side wall portion 912 and the lower surface 922 of the flange portion 92, a regulation claw portion 974 (second regulation claw) protruding outward with respect to the axis A is formed. The restriction claws 973 and 974 are provided on the side wall 912 and extend along the Y-axis direction. The height position of the restriction claw portion 974 is the same as the height position of the restriction claw portion 972. That is, the restriction claw portion 974 is provided so as to be located between the second winding member 81 and the third winding member 82 when the second coil winding 8 is attached to the bobbin 9.

The side wall portion 913 of the main body portion 91 is formed with a convex portion 98 that projects outward with respect to the axis A (see FIGS. 6 and 8 ). The height position of the convex portion 98 is the same as the height position of the restriction claw portions 972 and 974. That is, it corresponds to between the second winding member 81 and the third winding member 82 when the second coil winding 8 is attached to the bobbin 9. Further, the mounting position of the convex portion 98 in plan view corresponds to the position of the cutout portion 87 in the second winding member 81 during the mounting of the second coil winding 8 to the bobbin 9.

The heat dissipation terminal support portion 93 of the bobbin 9 is a peripheral edge portion of the four sides of the flange portion 92 that extends along the X-axis direction and is different from the peripheral edge portion on the side where the locking claw portion 951 is provided. Is continuously provided at the peripheral edge of the. The heat dissipation terminal support portion 93 integrally supports a pair of heat dissipation terminal portions 86A and 86B and a part of the region of the second winding member 81 that is provided between and extends along the X-axis direction. That is, the heat dissipation terminal support portion 93 is a substantially columnar member extending along the X axis direction, and the length of the heat dissipation terminal support portion 93 (the length in the X axis direction) is provided in the second coil winding 8. It is set according to the distance between the pair of heat dissipation terminal portions 86A and 86B.

The lower surface (main surface on the Z axis negative side) 931 of the heat dissipation terminal support portion 93 is continuous with the lower surface 922 of the flange portion 92. The lower surface 931 of the heat dissipation terminal support portion 93 is an area facing the second winding member of the second coil winding 8. On the X-axis positive side, the heat-radiating terminal support portion 93 is provided continuously from the lower surface 931 and protrudes toward the X-axis positive side so as to face the heat-radiating terminal portion 86A of the second winding member 81. It has a support surface 932A and a ridge portion 933A protruding downward (Z-axis negative side) from the end of the terminal support surface 932A on the X-axis positive side. On the X-axis negative side, the heat dissipation terminal support portion 93 is provided continuously from the lower surface 931 and projects toward the X axis negative side so as to face the heat dissipation terminal portion 86B of the second winding member 81. It has a support surface 932B and a ridge portion 933B protruding downward (Z-axis negative side) from the end of the terminal support surface 932B on the X axis positive side.

The ridge portions 933A and 933B are located outside the heat dissipation terminal portions 86A and 86B, respectively, when the second coil winding 8 and the bobbin 9 are assembled. Therefore, the ridge portions 933A and 933B have a function of suppressing the positional deviation between the second coil winding 8 and the bobbin 9. The height (length in the Z-axis direction) of the ridge portion 933A is smaller than that of the ridge portion 933B, and the thickness of the second winding member 81 of the second coil winding 8 (in the Z-axis direction). The length of the second coil winding 8 is sufficiently smaller than the length, and when the second coil winding 8 is attached to the bobbin 9, the second coil winding 8 passes thereabove due to the elasticity of the heat dissipation terminal support portion 93. Made possible. This point will be described later.

Further, the heat dissipation terminal support portion 93 also has a function of supporting the first coil winding 7 on the upper surface side opposite to the lower surface 931 (Z axis positive side). Specifically, the heat dissipation terminal support portion 93 is thick when viewed in the thickness direction (Z-axis direction), and above the lower surface 931 in the extending direction of the columnar heat dissipation terminal support portion 93. A through hole 934 that is long along the X-axis direction and penetrates along the Y-axis direction is formed. Of the inner surface of the through hole 934, the surface extending along the XY plane formed on the lower side (Z axis negative side) is continuous with the upper surface 921 of the flange portion 92. The width (length in the X-axis direction) of the through hole 934 corresponds to the width (length in the X-axis direction) of the first winding member 71 of the first coil winding 7. Further, the height (length in the Z-axis direction) of the through hole 934 corresponds to the height (length in the Z-axis direction) of the first winding member 71 of the first coil winding 7. When the first coil winding 7 is attached to the bobbin 9, a part thereof is inserted into the through hole 934. As a result, the movement of the first coil winding 7 is significantly restricted.

Since the heat dissipation terminal support portion 93 according to the present embodiment is provided with the through hole 934 for inserting the first winding member 71 of the first coil winding 7 as described above, the heat dissipation terminal portions 86A and 86B. It has a columnar shape that can simultaneously support. However, the shape and arrangement may be changed so as to individually support the heat dissipation terminal portions, depending on the arrangement and number of the heat dissipation terminal portions.

(Assembly of coil parts)
Next, a method of assembling the coil component 5 including the first coil winding 7, the second coil winding 8, and the bobbin 9 will be described. The coil component 5 is assembled by attaching the first coil winding 7 and the second coil winding 8 to the bobbin 9. In the present embodiment, first, the case where the first coil winding 7 is attached to the bobbin 9 and then the second coil winding 8 is attached will be described. The order of attaching the first coil winding 7 and the second coil winding 8 is not limited to the above, and the coil component 5 can be assembled in any order.

First, the attachment of the first coil winding 7 to the bobbin 9 will be described with reference to FIGS. 9 to 11. 9 to 11 are perspective views for explaining a method of attaching the first coil winding 7 to the bobbin 9.

In order to attach the first coil winding 7 to the bobbin 9, it is necessary to move the first coil winding 7 with respect to the bobbin 9 in two steps. Specifically, the first stage is a vertical movement along the Z axis, and the second stage is a horizontal movement along the Y axis.

First, as shown in FIG. 9, in a state in which the axis B passing through the center of the first winding member 71 in the first coil winding 7 with respect to the axis A passing through the center of the bobbin 9 is located on the Y axis negative side. The first coil winding 7 is arranged above the bobbin 9 (on the Z axis positive side and facing the upper surface 921 of the flange portion 92). The axis A and the axis B coincide after the first coil winding 7 is attached to the bobbin 9, but before the first step, as shown in FIG. The state is located on the negative side of the Y axis. At this time, the first coil winding 7 is in a position where it does not overlap with the heat dissipation terminal support portion 93 of the bobbin 9 and does not overlap with the side wall portions 911, 912, 914 and the restriction portion 96 in plan view. The width (length in the Y-axis direction) of the side wall portions 912 and 914 is shorter than the length in the Y-axis direction of the opening 701 of the first winding member 71 of the first coil winding 7, and thus the axis A is set. On the other hand, even when the axis B is located on the Y axis negative side, it is possible to realize a position where the first coil winding 7 and the side wall portions 912 and 914 do not overlap each other.

In this state, the first coil winding 7 is moved from the Z axis positive side with respect to the bobbin 9 along the Z axis direction in the arrow A1 direction (Z axis negative direction) of FIG. As a result, the body portion 91 (side wall portions 911, 912, 914) is inserted into the opening 701 of the first coil winding 7, and the first winding member 71 is moved to the position where it abuts the upper surface 921 of the flange portion 92. The one-coil winding 7 moves downward.

As a result, as shown in FIG. 10, the lower surface of the first winding member 71 is in contact with the upper surface 921 of the flange portion 92. At this time, a part of the region of the first winding member 71 extending in the Y-axis direction is housed between the side wall part 912 and the guide part 941 or between the side wall part 914 and the guide part 942. However, as shown in FIG. 10, the axis B of the second winding member 81 in the first coil winding 7 is on the Y axis negative side with respect to the axis A passing through the center of the bobbin 9, and the axes B are in different positions. is there. Therefore, the opening 901 of the main body of the bobbin 9 and the opening 701 of the first winding member 71 of the first coil winding 7 have a region where they do not overlap with each other when viewed in the Z-axis direction.

Further, when the first coil winding 7 is in contact with the upper surface 921 of the flange portion 92, the first winding member 71 of the first coil winding 7 is also in contact with the locking claw portion 951. ing. At this time, due to the elasticity of the bobbin 9, the flange portion 92 is slightly bent.

Next, the first coil winding 7 abutting on the upper surface 921 of the flange portion 92 of the bobbin 9 is moved along the upper surface 921 (along the XY plane) in the arrow A2 direction (Y-axis positive direction: first direction). Direction) parallel to. At this time, the moving direction of the first coil winding 7 is restricted by the pair of guide portions 941 and 942 and the side wall portions 912 and 914 extending along the Y-axis direction, that is, the width direction of the side wall portions 912 and 914, and the arrow It can move smoothly in the A2 direction. That is, the guide portions 941 and 942 and the side wall portions 912 and 914 also allow the movement of the first coil winding 7 in the Y-axis direction within the movement range along the XY plane orthogonal to the axis A. It functions as a first guide part that guides while guiding.

In the first coil winding 7, a portion of the first winding member 71 that extends continuously along the X-axis direction in the X-axis direction in the direction of arrow A2 (Y-axis positive direction) is referred to as a side wall portion 911. Move to the contact position. FIG. 11 shows a state after the movement, that is, a state in which the first coil winding 7 is moved to the attachment position and attached to the bobbin 9. In the state shown in FIG. 11, the axis A passing through the center of the bobbin 9 and the axis B of the second winding member 81 in the first coil winding 7 are coincident with each other, so that the axis A is shown in FIG. At this time, a part of the first winding member 71, which extends along the X-axis direction on the side of the heat dissipation terminal support 93, is inserted into the through hole 934 provided in the heat dissipation terminal support 93. Since the inner surface of the through hole 934 is continuous with the upper surface 921 of the flange portion 92, by moving the first coil winding 7 along the upper surface 921, the above-mentioned partial region of the first winding member 71 is formed. Can be smoothly inserted into the through hole 934.

Further, when the first coil winding 7 is moved to a position where the first winding member 71 contacts the side wall portion 911 of the bobbin 9, the first coil winding 7 crosses over the locking claw portion 951 and gets over the state. Becomes As a result, as shown in FIG. 11, the locking claw portion 951 projects on the outer peripheral side (Y-axis negative side) of the first winding member 71.

Further, when the first coil winding 7 is moved to a position where the first winding member 71 contacts the side wall portion 911 of the bobbin 9, as shown in FIG. 11, the protruding portion 75 of the first coil winding 7 is restricted. It is in a state of facing the rod-shaped portion 961 of the portion 96. At this time, the projecting portion 75 enters below the regulating claw portion 962 of the regulating portion 96, and the regulating claw portion 962 is positioned above the projecting portion 75.

Next, attachment of the second coil winding 8 to the bobbin 9 will be described with reference to FIGS. 12 to 14. 12 to 14 are perspective views for explaining a method of mounting the second coil winding 8 on the bobbin 9.

In order to attach the second coil winding 8 to the bobbin 9, it is necessary to move the second coil winding 8 with respect to the bobbin 9 in two steps. Specifically, the first stage is vertical movement along the Z axis, and the second stage is horizontal movement along the X axis.

First, as shown in FIG. 12, with respect to the axis A passing through the center of the bobbin 9, the axis C passing through the centers of the second winding member 81 and the third winding member 82 in the second coil winding 8 is the X-axis positive. The second coil winding 8 is arranged below the bobbin 9 (upper side in FIG. 12: the Z-axis negative side and the side facing the lower surface 922 of the flange portion 92) in the state of being located on the side. The axis A and the axis C coincide with each other after the second coil winding 8 is attached to the bobbin 9, but before the first step, as shown in FIG. The position is on the positive side of the X axis. At this time, the second coil winding 8 is positioned so as not to overlap the side wall portions 911, 912, 913 and the outer wall portion 97 of the bobbin 9 in a plan view. The width (length in the X-axis direction) of the side wall portions 911, 913 is determined from the length in the X-axis direction of the opening 801 of the second winding member 81 of the second coil winding 8 and the opening 802 of the third winding member 82. Since the length is also shortened, it is possible to realize a position where the second coil winding 8 and the side wall portions 911 and 913 do not overlap with each other even when the axis C is located on the X axis positive side with respect to the axis A. it can.

In this state, the second coil winding 8 is moved from the Z-axis negative side with respect to the bobbin 9 along the Z-axis direction in the arrow A3 direction (Z-axis positive direction) in FIG. As a result, the main body portion 91 (side wall portions 911, 912, 913) is inserted into the opening 801 of the second winding member 81 and the opening 802 of the third winding member 82 of the second coil winding 8, and the second The second coil winding 8 moves downward to a position where the winding member 81 contacts the lower surface 922 of the flange portion 92.

As a result, as shown in FIG. 13, the upper surface of the second winding member 81 is in contact with the lower surface 922 of the flange portion 92. At this time, a part of the region of the second winding member 81 extending in the Y-axis direction is housed between the side wall portion 912 and the guide portion 941 or between the side wall portion 914 and the guide portion 942. Further, the lower surface 931 of the heat dissipation terminal support portion 93 contacts the upper surface of the second winding member 81, and the terminal support surfaces 932A and 932B contact the heat dissipation terminal portions 86A and 86B of the second winding member 81, respectively. Further, the convex portion 98 provided on the side wall portion 913 passes through the cutout portion 87 of the second winding member 81 and is located between the second winding member 81 and the third winding member 82. ..

However, as shown in FIG. 13, the axis C of the second winding member 81 and the third winding member 82 in the second coil winding 8 is on the X axis positive side with respect to the axis A passing through the center of the bobbin 9. Yes, they are in different positions. Therefore, the opening 901 of the main body of the bobbin 9, the opening 801 of the second winding member 81 and the opening 802 of the third winding member 82 of the second coil winding 8 are overlapped when viewed in the Z-axis direction. There is an area that cannot be used.

Further, when the second coil winding 8 is in contact with the lower surface 922 of the flange portion 92, the second winding member 81 of the second coil winding 8 has the locking claw portion 952 provided on the flange portion 92. Both are in contact with each other. At this time, due to the elasticity of the bobbin 9, the flange portion 92 is slightly bent. Similarly, the heat dissipation terminal portion 86A is in contact with the ridge portion 933A of the heat dissipation terminal support portion 93. At this time, due to the elasticity of the bobbin 9, the heat dissipation terminal support portion 93 is also slightly bent.

Next, the second coil winding 8 that contacts the lower surface 922 of the flange portion 92 of the bobbin 9 is moved along the lower surface 922 (along the XY plane) in the arrow A4 direction (X-axis negative direction: second direction). Direction) parallel to. At this time, the moving direction of the second coil winding 8 is restricted by the side wall portions 911 and 913 extending in the X-axis direction, and the second coil winding 8 can smoothly move in the arrow A4 direction. That is, the second coil winding 8 is allowed to move in the X-axis direction (the width direction of the side wall portions 911 and 913) within the movement range along the XY plane where the side wall portions 911 and 913 are orthogonal to the axis A. It functions as a second guide portion that guides while moving.

In the second coil winding 8, a part of the second winding member 81 and the third winding member 82 on the X axis negative side is in contact with the outer wall portion 97 in the arrow A4 direction (X axis negative direction), and Part of the second winding member 81 and the third winding member 82 on the X-axis positive side moves to a position where they come into contact with the side wall portion 912. FIG. 14 shows a state after the movement, that is, a state in which the second coil winding 8 is moved to the attachment position and attached to the bobbin 9. In the state shown in FIG. 14, the axis A passing through the center of the bobbin 9 and the axis B of the second winding member 81 and the third winding member 82 in the second coil winding 8 coincide with each other. Therefore, in FIG. Is shown as. When the second coil winding 8 is attached to the bobbin 9, the third connecting terminal 83 of the second winding member 81 is not attached to the second coil winding 7 of the first coil winding 7 already attached to the bobbin 9. The connection terminal 73 and the connection terminal 73 are overlapped.

At this time, the second winding member 81 is located between the lower surface 922 of the flange portion 92 and the restricting claw portion 972, and the third winding member 82 is in the restricting claw portion in the region in contact with the outer wall portion 97 of the bobbin 9. It is located between 972 and the restricting claw 971. The second winding member 81 is located between the lower surface 922 of the flange portion 92 and the restricting claw portion 974 and the third winding member 82 is in the restricting claw portion 974 in the region where the bobbin 9 is in contact with the side wall portion 912. And the control claw portion 973. Further, the heat dissipation terminal portion 86B provided on the second winding member 81 is brought into contact with the ridge portion 933B of the heat dissipation terminal support portion 93.

Further, when the second coil winding 8 is moved to a position where the second winding member 81 and the third winding member 82 come into contact with the outer wall portion 97 and the side wall portion 912, the second coil winding 8 becomes the flange portion 92. The ridge 933A of the heat radiation terminal supporting portion 93 and the locking claw portion 952 provided on the ridge are crossed over. As a result, the ridge portion 933A projects from the heat dissipation terminal portion 86A on the X axis positive side, and the locking claw portion 952 projects on the outer peripheral side (X axis positive side) of the second winding member 81.

As described above, the coil component 5 in which the first coil winding 7 and the second coil winding 8 are attached to the bobbin 9 is obtained. 15 and 16 are schematic perspective views of the coil component 5.

As shown in FIGS. 15 and 16, in the coil component 5, the movement of the first coil winding 7 is restricted by each part of the bobbin 9. Specifically, the downward movement (Z-axis negative direction) of the first coil winding 7 along the axis A is restricted by the upper surface 921 of the flange portion 92. The upward movement (the positive direction of the Z axis) of the first coil winding 7 along the axis A is regulated by the regulating claw portion 962 of the regulating portion 96 and the upper surface of the through hole 934 of the heat dissipation terminal supporting portion 93. The movement of the first coil winding 7 in the positive direction of the X axis is restricted by the guide portion 941, the side wall portion 914, and one side surface of the through hole 934 of the heat dissipation terminal support portion 93. Similarly, the movement of the first coil winding 7 in the negative direction of the X axis is restricted by the guide portion 942, the side wall portion 912, and the other side surface of the through hole 934 of the heat dissipation terminal support portion 93. Furthermore, the movement of the first coil winding 7 in the Y-axis positive direction (first direction) is restricted by the side wall portion 911. The movement of the first coil winding 7 in the negative direction of the Y-axis (the direction opposite to the first direction) is restricted by the locking claw portion 951. In this way, the first coil winding 7 is in a state in which movement in all directions along the XYZ axes that are orthogonal coordinate axes is restricted.

Similarly, in the coil component 5, the movement of the second coil winding 8 is restricted by each part of the bobbin 9. Specifically, the upward movement (Z axis positive direction) of the second coil winding 8 along the axis A is restricted by the lower surface 922 of the flange portion 92. Further, the downward movement (Z-axis negative direction) of the second coil winding 8 along the axis A is restricted by the restricting claws 971, 972 of the outer wall part 97 and the restricting claws 973, 974 of the side wall part 912. To be done. The movement of the second coil winding 8 in the positive direction of the X-axis (the direction opposite to the second direction) is performed by the locking claw portion 952 provided on the lower surface 922 of the flange portion 92 and the ridge of the heat dissipation terminal support portion 93. Regulated by section 933A. Similarly, the movement of the second coil winding 8 in the X-axis negative direction (second direction) is restricted by the side wall portion 912, the outer wall portion 97, and the ridge portion 933B of the heat dissipation terminal support portion 93. Furthermore, the movement of the second coil winding 8 in the Y-axis positive direction is restricted by the side wall portion 911. The movement of the second coil winding 8 in the negative Y-axis direction is restricted by the side wall portion 913. In this way, the second coil winding 8 is in a state in which movement in all directions along the XYZ axes, which are orthogonal coordinate axes, is restricted.

Further, in order to prevent a short circuit between the second winding member 81 and the third winding member 82 of the second coil winding 8, the bobbin 9 is provided with a space between the second winding member 81 and the third winding member 82. Is provided with a convex portion 98. Here, the second winding member 81 is formed with the cutout portion 87 corresponding to the convex portion 98, but when the second coil winding 8 is attached to the bobbin 9, the second coil member 81 is formed as described above. The winding 8 is moved in the X-axis direction. For this reason, as shown in FIG. 16, the second winding member 81 and the third winding member 82 are present above and below the convex portion 98, so that the convex portion 98 separates the second winding member 81 and the third winding member 82 from each other. A short circuit with the 3-winding member 82 can be prevented. In addition to the convex portion 98, the restricting claws 972 and 974 are arranged between the second winding member 81 and the third winding member 82. Accordingly, it is possible to effectively prevent a short circuit between the second winding member 81 and the third winding member 82 of the second coil winding 8.

The coil component 5 is formed by attaching the first coil winding 7 and the second coil winding 8 to the bobbin 9 and then connecting them. Specifically, in the state where the first coil winding 7 and the second coil winding 8 are attached to the predetermined position of the bobbin 9, as shown in FIG. 15, the second connection of the first coil winding 7 is performed. Since the terminal 73 and the third connection terminal 83 of the second coil winding 8 are in contact with each other, they can be fixed by screwing, for example. As a result, the first coil winding 7 and the second coil winding 8 are electrically connected, and function as a three-turn coil winding that winds around the axis A. The method of fixing the second connecting terminal 73 and the third connecting terminal 83 is not limited to screwing, and they may be fixed by welding or rivets, for example.

(Assembling the chalk)
Next, the assembly of the choke 3 will be described with reference to FIG. The choke 3 is formed by further attaching a pair of magnetic core members 6A and 6B to the coil component 5 described above.

As shown in FIG. 17, the magnetic core members 6A and 6B are arranged along the axis A penetrating the openings of the first coil winding 7, the second coil winding 8 and the bobbin 9 that form the coil component 5. It is arranged so as to sandwich the component 5.

The magnetic core members 6A and 6B are so-called E-shaped cores obtained by compacting and shaping ferrite powder. More specifically, the magnetic core member 6A includes a flat plate-shaped base portion 60A having a longitudinal direction, a square columnar main leg 61A protruding from the center of one main surface of the base portion 60A, and a main leg 61A. It has two outer legs 62A and 63A provided at both ends of the base portion 60A so as to be sandwiched therebetween. Further, the magnetic core member 6B includes a flat plate-shaped base portion 60B having a longitudinal direction, a square columnar main leg 61B protruding from the center of one main surface of the base portion 60B, and the base portion 60B sandwiching the main leg 61B. Has two outer legs 62B, 63B provided at the ends of the.

The main leg 61A of the magnetic core member 6A is wound by the first coil so that the opening of the coil component 5, that is, the opening 901 of the bobbin 9, the opening 701 of the first winding member 71, and the opening 901 of the bobbin 9 communicate with each other. The wire 7 is inserted from the side where it is attached (Z axis positive side). The main leg 61B of the magnetic core member 6B is inserted into the opening 901 of the bobbin 9 in the coil component 5 from the side where the second coil winding 8 is attached (Z axis negative side). With the magnetic core members 6A and 6B inserted in the openings of the coil component 5, on the side wall 912 side of the bobbin 9, outside the first coil winding 7 and the second coil winding 8, the direction of the axis A (Z (Axial direction). Further, the outer leg 63A of the magnetic core member 6A and the outer leg 63B of the magnetic core member 6B are provided on the side wall 914 side of the bobbin 9 outside the first coil winding 7 and the second coil winding 8 with the axis A. Direction (Z-axis direction). The main leg 61A, the outer leg 62A, and the outer leg 63A of the magnetic core member 6A are in contact with the main leg 61B, the outer leg 62B, and the outer leg 63B of the magnetic core member 6B, respectively.

(Assembling the power supply unit)
Next, the choke 3 assembled as described above is assembled as the power supply device 1. The power supply device 1 is assembled by attaching the choke 3 and the heat radiation sheets 4A and 4B (see FIG. 3) to the housing 2. The choke 3 can be fixed to the housing 2 with, for example, a screw, a clamp, an adhesive, or the like. The first connection terminal 72 and the fourth connection terminal 85 of the choke 3 are electrically connected to another electronic component such as a circuit board (not shown) fixed to the housing 2, for example.

The heat dissipation sheet 4A is arranged between the pillar portion 22A of the housing 2 and the choke 3, and the heat dissipation sheet 4B is arranged between the pillar portion 22B and the choke 3. More specifically, the heat dissipation sheet 4A is in contact with the heat dissipation terminal portion 86A of the second winding member 81, and the heat dissipation sheet 4B is in contact with the heat dissipation terminal portion 86B of the second winding member 81. The housing 2 and the choke 3 are thermally coupled via the heat dissipation sheets 4A and 4B, and the heat generated in the choke 3 is released from the air cooling fins 23 to the outside. The heat dissipation sheets 4A and 4B are formed using a material such as a heat conductive resin, for example. Instead of the heat dissipation sheets 4A and 4B, a heat dissipation material such as heat-curable or room-temperature curable heat-dissipating silicone may be used.

In order to bring the heat dissipation sheet 4A into closer contact with the heat dissipation terminal portion 86A and the pillar portion 22A and the heat dissipation sheet 4B into closer contact with the heat dissipation terminal portion 86B and the pillar portion 22B, for example, a spring-shaped elastic member or the like of the heat dissipation terminal support portion 93 is used. The positions corresponding to the terminal support surfaces 932A and 932B on the upper surface may be pressed from above toward the pillar portions 22A and 22B. As a result, the housing 2 and the choke 3 are more reliably thermally coupled, so that the heat generated in the choke 3 can be more efficiently released to the outside.

As described above, in the coil component 5 according to the present embodiment, the first coil winding 7 is in contact with the upper surface 921 of the flange portion 92 of the bobbin 9 in the first direction (Y-axis positive direction; arrow A2). Direction) and move to the mounting position. Then, in the state in which the first coil winding 7 is arranged at the mounting position, the movement of the first coil winding 7 in the arrow A2 direction is restricted by the side wall part 911 (first restricting wall part) extending along the axis A direction. Further, the locking claw portion 951 (first locking portion) provided on the flange portion 92 of the bobbin 9 allows the movement of the first coil winding 7 in the direction opposite to the first direction (Y-axis negative direction). Regulated. As described above, according to the coil component 5 described above, when the bobbin 9 has the main body portion 91 whose outer shape is substantially rectangular in plan view, the first coil winding abutting against the flange portion 92. By moving 7 in the first direction (Y-axis positive direction; arrow A2 direction), the bobbin 9 can be properly mounted, and after the first coil winding 7 is arranged at the mounting position. Since the movement of the first coil winding 7 in the first direction and the movement of the first coil winding 7 in the axis A direction are restricted, the first coil winding 7 can be preferably held.

Further, in the above coil component 5, when the first coil winding 7 is moved to the attachment position along the first direction, it is allowed to straddle over the locking claw portion 951, and after the movement, that is, After the first coil winding 7 is attached at the attachment position, the locking claw portion 951 restricts the movement in the opposite direction. Further, at the mounting position, the restriction claw portion 962 is provided so as to face the upper surface 921 of the flange portion 92 with the first coil winding 7 interposed therebetween, and the movement of the first coil winding 7 along the direction of the axis A is restricted. Therefore, the first coil winding 7 can be preferably held.

Furthermore, according to the coil component 5 described above, the second coil winding 8 is also attached to the bobbin 9. That is, while the second coil winding 8 is in contact with the lower surface 922 of the flange portion 92 of the bobbin 9, the second coil winding 8 is moved along the second direction (X-axis positive direction; arrow A4 direction) to the attachment position. The movement of the second coil winding 8 in the second direction is restricted by the side wall part 912 and the outer wall part 97 (second restriction wall part) that extend along the axis A in the state of being arranged at the attachment position. It Further, the locking claw portion 952 provided on the flange portion 92 of the bobbin 9 and the ridge portion 933A (second locking portion) provided on the heat dissipation terminal support portion 93 allow the second direction in the opposite direction to the second direction. The movement of the coil winding 8 is restricted. Thus, in the coil component 5 described above, in addition to the first coil winding 7, not only the second coil winding 8 but also the second coil winding 8 that is in contact with the flange portion 92 is moved in the second direction. By moving in the (X-axis positive direction; arrow A4 direction), the bobbin 9 can be properly mounted, and after the second coil winding 8 is arranged at the mounting position, the second coil winding Since the movement of 8 in the second direction and the movement in the axial direction are restricted, it is possible to preferably hold the second coil winding 8. As described above, in the coil component 5 described above, it is possible to favorably hold the two coil windings with the single bobbin 9.

Further, in the above coil component 5, when the second coil winding 8 is moved to the mounting position along the second direction, it is allowed to cross over the locking claw portion 952 and the ridge portion 933A. After the movement, that is, after the second coil winding is attached to the attachment position, the movement in the opposite direction is restricted by the locking claw portion 952 and the ridge portion 933A. Further, at the mounting position, the restriction claw 971 provided on the outer wall 97 and the restriction claw 973 (second restriction claw) provided on the side wall 912 sandwich the second coil winding 8 and the flange 92. Since the second coil winding 8 is opposed to the lower surface 922 thereof, the movement of the second coil winding 8 along the direction of the axis A is restricted, so that the second coil winding 8 can be preferably held.

In addition, in the above coil component 5, when the second coil windings 8 have a number of turns of a plurality of turns constituted by a plurality of winding members (the second winding member 81 and the third winding member 82), they are adjacent to each other. By providing the convex portion 98 arranged between the second winding member 81 and the third winding member 82 on the side surface of the main body portion 91 of the bobbin 9, it is possible to prevent a short circuit between the winding members. Therefore, the coil winding can be held more preferably.

Further, in the coil component 5 described above, the second winding member 81 of the second coil winding 8 has heat dissipation terminal portions 86A and 86B (second heat dissipation terminal portion) that are thermally coupled to the housing 2. ing. The bobbin 9 also has a heat dissipation terminal support portion 93 that supports the heat dissipation terminal portions 86A and 86B. Thereby, not only the heat generated in the second coil winding 8 can be efficiently discharged to the outside (the housing 2) but also the heat generated in the first coil winding 7 connected to the second coil winding 8 can be efficiently discharged to the outside. Can be released to.

The power supply device 1 also includes a coil component 5 and a housing 2 to which the choke 3 including the coil component 5 is attached. As described above, the power supply device 1 is provided with the coil component 5 capable of favorably attaching and holding the bobbin having the main body whose outer shape is substantially rectangular in plan view and the coil winding wound around the bobbin. Since it is attached, it is possible to appropriately hold the coil winding even in the power supply device 1 including the coil component 5. Further, since the coil component 5 is easily assembled, the power supply device 1 can be easily assembled.

(Modification)
Next, as a modified example of the coil component 5, a modified example of the first locking portion and the second locking portion will be described. Although the bobbin 9 has the locking claw portion 951 as the first locking portion and the locking claw portion 952 as the second locking portion in the above-described embodiment, the locking claw portion 951 is described. , 952, the movement of the first coil winding and the second coil winding can be restricted.

First, a modified example of the first locking portion will be described with reference to FIGS. 18 and 19. FIG. 18 is a perspective view of the coil component 5A according to the modified example in which the first coil winding 7A is removed, and FIG. 19 is a view showing the state in which the first coil winding 7A is attached.

As shown in FIG. 18, in the flange portion 92 of the bobbin 9A of the coil component 5A according to the modified example, instead of the locking claw portion 951 provided on the bobbin 9, a projection portion 953 protruding upward from the upper surface 921 is provided. (First locking portion) is provided. Further, as shown in FIG. 19, on the side of the first coil winding 7A, when the first coil winding 7A is attached to the bobbin 9A, a recess 753 (first portion) is formed at a position corresponding to the protrusion 953 of the bobbin 9A. A fitting portion) is provided.

Even when the bobbin 9A has a protrusion 953 as a first locking portion instead of the locking claw 951 and the first coil winding 7A has a recess 753, the first coil winding 7A is attached to the bobbin 9A. Is performed by the same method as the attachment of the first coil winding 7 to the bobbin 9 described in the above embodiment. First, with the axis B passing through the center of the first winding member 71 in the first coil winding 7A being located on the Y axis negative side with respect to the axis A passing through the center of the bobbin 9A, the first coil winding 7A is It is arranged above the bobbin 9A (on the Z axis positive side and facing the upper surface 921 of the flange portion 92) (see FIG. 9). Then, the first coil winding 7A is moved in the Z-axis negative direction (arrow A1 direction: see FIG. 9) from the Z-axis positive side with respect to the bobbin 9A along the Z-axis direction to move the first coil winding 7A. The upper surface 921 of the flange portion 92 is brought into contact with. When the first coil winding 7A is in contact with the upper surface 921 of the flange portion 92, the first winding member 71 of the first coil winding 7A is also in contact with the protruding portion 953. At this time, the flange portion 92 is slightly bent due to the elasticity of the bobbin 9A.

After that, when the first coil winding 7A is moved to the position where the first winding member 71 contacts the side wall portion 911 of the bobbin 9A in the Y-axis positive direction (arrow A2 direction: see FIG. 10 ), FIG. As shown, the protrusion 953 of the bobbin 9A and the recess 753 of the first coil winding 7A are fitted together. In this state, the first coil winding 7A is attached to the bobbin 9A.

As described above, similarly to the locking claw portion 951 of the bobbin 9, the protrusion 953 provided on the flange portion 92 of the bobbin 9A fits into the recess 753 of the first coil winding 7A, whereby the first direction The movement of the first coil winding 7A in the opposite direction (Y-axis negative direction) is restricted.

Next, a modified example of the second locking portion will be described with reference to FIG. FIG. 20 is a diagram showing a state in which the second coil winding 8A is attached to the coil component 5A according to the modification. As with the modified example of the first locking part, the second locking part used when mounting the second coil winding 8A is also fitted with the projection part and the fitting part, so that the second coil The structure that regulates the movement of the winding is realized.

As shown in FIG. 20, in the flange portion 92 of the bobbin 9A of the coil component 5A according to the modified example, instead of the locking claw portion 952 provided on the bobbin 9, a protrusion 954 protruding downward from the lower surface 922. (Second locking portion) is provided. Further, when the second coil winding 8A is attached to the bobbin 9A, the recessed portion 854 (the second coil winding 8A) is attached to the bobbin 9A at a position corresponding to the protruding portion 954 of the bobbin 9A. 2 fitting portions) are provided.

Even when the bobbin 9A has a protrusion 954 as the second locking portion instead of the locking claw 952 and the second coil winding 8A has a recess 854, the second coil winding 8A is attached to the bobbin 9A. Is performed by the same method as the attachment of the second coil winding 8 to the bobbin 9 described in the above embodiment. First, with respect to the axis A passing through the center of the bobbin 9A, the axis C passing through the centers of the second winding member 81 and the third winding member 82 in the second coil winding 8A is located on the X axis positive side, The second coil winding 8A is arranged below the bobbin 9A (on the Z axis negative side and facing the lower surface 922 of the flange portion 92) (see FIG. 12 ). Then, the second coil winding 8A is moved from the Z axis negative side in the Z axis positive direction (arrow A3 direction: see FIG. 12) along the Z axis direction with respect to the bobbin 9A to move the second coil winding 8A. The lower surface 922 of the flange portion 92 is brought into contact with the lower surface 922. When the second coil winding 8A is in contact with the lower surface 922 of the flange portion 92, the second winding member 81 of the second coil winding 8A is also in contact with the protruding portion 954. At this time, the flange portion 92 is slightly bent due to the elasticity of the bobbin 9A.

After that, in the X-axis negative direction (arrow A4 direction: see FIG. 13), a part of the second winding member 81 and the third winding member 82 on the X-axis negative side abuts the outer wall portion 97, and the second The second coil winding 8A is moved to a position where a portion of the winding member 81 and the third winding member 82 on the X-axis positive side comes into contact with the side wall portion 912. As a result, as shown in FIG. 20, the protrusion 953 of the bobbin 9A and the recess 854 of the second coil winding 8A are fitted together. In this state, the second coil winding 8A is attached to the bobbin 9A.

In this way, similarly to the locking claw portion 952 of the bobbin 9, the protrusion 954 provided on the flange portion 92 of the bobbin 9A fits into the recess 854 of the second coil winding 8A, so that the second direction The movement of the second coil winding 8A in the opposite direction (X-axis positive direction) is restricted.

As described above, the structures of the first locking portion and the second locking portion that restrict the movement of the first coil winding and the second coil winding in the predetermined direction can be appropriately changed. 18 to 20, the protrusions 953 and 954 are provided on the bobbin 9A side, and the recesses 753 and 854 are provided on the first coil winding 7A and the second coil winding 8A sides. Although an example is shown, the arrangement of the protrusion and the recess may be interchanged. In other words, the recess may be provided on the bobbin side and the protrusion may be provided on the coil winding side. Even in this case, the recess on the bobbin side functions as a locking part, and the protrusion on the coil winding side functions as a fitting part. By fitting the two together, the coil winding moves in a predetermined direction with respect to the bobbin. Can be regulated.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment and various modifications can be made.

For example, the shape of the main body portion 91 of the bobbin 9 and the shape of the flange portion 92 are not limited to those in the above embodiment and can be changed. In addition, in the above-described embodiment, the main body 91 has a rectangular ring shape at the height position where the flange portion 92 is attached, but has a substantially U-shape (U-shape) at other height positions. explained. As described above, the main body 91 does not need to be annular in all the cross sections perpendicular to the direction of the axis A, and its shape can be changed as appropriate.

Further, in the above embodiment, the coil component 5 in which two coil windings are used has been described, but the number of coil windings can be changed as appropriate. Also, the number of turns of the coil winding in the coil component is not particularly limited as long as it is one or more. In the coil component 5 in the above-described embodiment, the second coil winding 8 has the number of turns of 2 turns, but the first coil winding 7 may also have the number of turns of 2 turns. Further, when the number of turns of the coil winding is two or more, a plurality of winding members are arranged side by side in the direction of the axis A with a space between them. By providing, it is possible to preferably prevent a short circuit between the winding members. If the convex portion is provided between at least some of the winding members, the effect of preventing a short circuit between the winding members can be enhanced, but if the convex portion is provided between all the winding members, The effect of preventing a short circuit is further enhanced.

Further, the provision of the heat dissipation terminal portions 86A and 86B is not limited to the second winding member 81 of the second coil winding 8, but the third winding member 82 or the first winding member of the first coil winding 7. It may be the winding member 71. Further, a plurality of winding members may be provided with heat dissipation terminal portions, and the number of heat dissipation terminal portions is not particularly limited. In addition, the bobbin 9 corresponds to the heat radiating terminal portion and corresponds to the heat radiating terminal supporting portion (the first heat radiating terminal supporting portion that supports the first heat radiating terminal portion of the first coil winding or the first heat radiating terminal supporting portion of the second coil winding). It is preferable that a second heat radiation terminal support portion that supports the two heat radiation terminal portions is provided. By providing the heat dissipation terminal support section for each heat dissipation terminal section, heat dissipation from the heat dissipation terminal section to other components can be favorably performed.

Further, the shapes of the pillar portions 22A, 22B and the like of the housing 2 can be changed appropriately. The pillar portions 22A and 22B are provided for the purpose of radiating heat from the heat radiating terminal portions 86A and 86B to the housing 2, so that the pillar portions of the housing 2 can be changed in response to changes in the shape and arrangement of the heat radiating terminal portions. Also, it is preferable to appropriately change.

Further, in the above embodiment, the bobbin 9 has been described as having the pair of flange portions 92A and 92B, but the flange portion can suppress the short circuit between the first coil winding 7 and the second coil winding 8. The number, shape, and position of the flange portions are not limited to those in the above embodiment, and can be arbitrarily changed.

Further, in the above-described embodiment, the case where the coil component 5 is applied to the output choke 4 has been described, but the coil component according to the present invention can be applied to various components including coil components such as a transformer and a resonance coil.

DESCRIPTION OF SYMBOLS 1... Power supply device, 2... Housing|casing, 3... Choke, 4A, 4B... Heat dissipation sheet, 5... Coil parts, 6A, 6B... Magnetic core member, 7... 1st coil winding, 8... 2nd coil winding , 9... bobbin, 21... base plate, 22A, 22B... pillar portion, 60A, 60B... base portion, 61A, 61B... main leg, 62A, 62B, 63A, 63B... outer leg, 71... first winding member, 72... First connection terminal, 73... Second connection terminal, 75... Projection portion, 81... Second winding member, 82... Third winding member, 83... Third connection terminal, 84... Connection portion, 85... Fourth connection Terminals, 86A, 86B... Heat dissipation terminal section, 87... Notch section, 91... Main body section, 92... Flange section, 93... Heat dissipation terminal supporting section, 96... Restricting section, 97... Outer wall section, 98... Convex section, 701 801, 802, 901... Opening, 753, 854... Recessed portion, 911, 912, 913, 914... Side wall portion, 934... Through hole, 941, 942... Guide portion, 951, 952... Locking claw portion, 953, 954... Projection portion, 961... Rod-shaped portion, 962, 971, 972, 973, 974... Regulating claw portion, A... Axis line.

Claims (10)

An insulative bobbin integrally configured and a flat plate-shaped first coil winding that winds around the bobbin along an axis and extends along a plane whose main surface is substantially perpendicular to the axis. And a flat coil-shaped second coil winding, which winds around the bobbin along the axis and extends along a plane whose main surface is substantially perpendicular to the axis. There
The bobbin is
A tubular main body portion having a substantially rectangular outer shape in a plan view, which is formed by connecting two pairs of paired side wall portions arranged to face each other around the axis.
A flange portion that protrudes outward from the body portion with respect to the axis, extends along a plane orthogonal to the axis, and has a main surface that abuts the main surface of the first coil winding,
One pair of side wall portions of the pair of two side wall portions within the movement range along a plane orthogonal to the axis with the flange portion in contact with the first coil winding. A first guide portion that allows movement of the first coil winding to a mounting position along a first direction that is the same as the width direction of
The movement of the first coil winding in the first direction is restricted in a state where the first coil winding extends in the axial direction and the flange portion is in contact with the first coil winding and is disposed at the attachment position. A first restriction wall portion,
The flange portion is provided on a main surface that abuts on the first coil winding, and the flange portion is abutted on the first coil winding and is arranged at the attachment position, and is opposite to the first direction. A first locking portion that restricts movement of the first coil winding in a direction,
In a state in which the flange portion is in contact with the first coil winding and arranged at the mounting position, the flange portion is provided so as to face the flange portion with the first coil winding interposed therebetween, and the flange portion extends in the extending direction of the axis. A first restricting claw part for restricting movement of the first coil winding of
Have
The main surface of the second coil winding contacts the main surface of the flange portion opposite to the contact surface of the first coil winding,
The bobbin is
In a state where the flange portion is in contact with the second coil winding, within a moving range along a plane orthogonal to the axis, and one pair of side walls of the pair of two side wall portions. A second guide portion that allows movement of the first coil winding to a mounting position along a second direction that is the same as the width direction of the portion;
The movement of the second coil winding in the first direction is restricted in a state where the second coil winding extends in the axial direction and the flange portion is in contact with the second coil winding and is arranged at the attachment position. A second restriction wall portion,
The flange portion is provided on a main surface that comes into contact with the second coil winding, and the flange portion is in contact with the second coil winding and is arranged at the attachment position. A second locking portion that restricts movement of the second coil winding in a direction,
In a state where the flange portion is in contact with the second coil winding and is arranged at the mounting position, the flange portion is provided so as to face the flange portion with the second coil winding interposed therebetween, and extends in the extending direction of the axis. A second regulating claw portion for regulating the movement of the second coil winding of
Coil components having. The first locking portion projects from the flange portion, and when the first coil winding that is in contact with the flange portion moves in the first direction, the first coil winding is The coil component according to claim 1, wherein the coil component is allowed to straddle the upper side and, after the movement, regulates the movement of the first coil winding in a direction opposite to the first direction. The first coil winding has a first fitting portion that fits with the first locking portion at a position facing the first locking portion in a state in which the first coil winding is arranged at the attachment position,
The first locking portion is in a state of being in contact with the flange portion until the first locking portion and the first fitting portion of the first coil winding are fitted to each other. Is allowed to move in the first direction, and after the first locking portion and the first fitting portion of the first coil winding are fitted to each other, the The coil component according to claim 1, which restricts movement in a direction opposite to the direction of 1. The first coil winding has a plurality of turns by having a plurality of winding members having a number of turns of 1 or more and arranged in parallel in the axial direction with a space therebetween.
The said bobbin is a coil component as described in any one of Claims 1-3 which has a convex part arrange|positioned in the side surface of the said main-body part at least one part between the said adjacent winding members. The first coil winding has a first heat dissipation terminal portion that is thermally coupled to another component,
The bobbin, the coil component according to claim 1 having a first heat radiating terminal support portion for supporting the first heat radiating terminal portions. The second locking portion projects from the flange portion, and when the second coil winding in the state of being in contact with the flange portion moves in the second direction, the second coil winding is The coil component according to any one of claims 1 to 5, wherein the coil component is allowed to straddle upward and, after the movement, regulates the movement of the second coil winding in a direction opposite to the second direction. The second coil winding has a second fitting portion that fits with the second locking portion at a position facing the second locking portion when the second coil winding is arranged at the mounting position.
The second locking portion is in a state of being in contact with the flange portion until the second locking portion and the second fitting portion of the second coil winding are fitted to each other. Is allowed to move in the second direction, and after the second locking portion and the second fitting portion of the second coil winding are fitted to each other, The coil component according to any one of claims 1 to 5, which restricts movement in a direction opposite to the direction of 2. The second coil winding has a winding number of a plurality of turns by arranging a plurality of winding members having a winding number of 1 turn or more in parallel in the axial direction with a space provided therebetween.
The coil component according to any one of claims 1 to 7, wherein the bobbin has, on a side surface of the main body portion, a convex portion arranged at least in a part between the adjacent winding members. The second coil winding has a second heat dissipation terminal portion that is thermally coupled to another component,
The coil component according to any one of claims 1 to 8, wherein the bobbin has a second heat dissipation terminal support portion that supports the second heat dissipation terminal portion. A coil component according to any one of claims 1 to 9,
A power supply device comprising: a casing to which the coil component is attached.

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