JP2018019027A - Coil device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coil device which allows for fixing of a pair of bobbins, without using a holder, and the like.SOLUTION: A first bobbin 30a and a second bobbin 30b are arranged so that the first winding axis direction and the second winding axis direction are substantially in parallel. At a first flange, a pair of first fitting protrusions are formed in the Z axis direction. At a second flange, a pair of second fitting recesses are formed in the Z axis direction, and at a third flange, a pair of third fitting recesses are formed in the Z direction. At a fourth flange, a pair of fourth fitting protrusions are formed in the Z direction. In the Z axis direction, the pair of first fitting protrusions 33c can be fitted removably in the pair of third fitting recesses 35c, and in the Z direction, the pair of fourth fitting protrusions 36c can be fitted removably in the pair of second fitting recesses 34c.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a coil device, for example, a coil device having a pair of bobbins.

  As a coil device having a pair of bobbins, for example, an inductor shown in Patent Document 1 below is known.

  However, in the conventional inductor, the pair of bobbins are fixed by the holder, and the fixing structure is complicated. Further, in the conventional inductor, the insulation between the coils is not taken into consideration.

JP-A-8-97030

  The present invention has been made in view of such a situation, and a first object thereof is to provide a coil device capable of easily fixing a pair of bobbins without using a holder or the like. The second object of the present invention is to provide a coil device capable of easily performing insulation between coils.

In order to achieve the first object, the coil device according to the first aspect of the present invention includes:
A first bobbin having a first tubular part in which the first coil part is formed, and a first collar part and a second collar part respectively formed on both sides of the first cylindrical part in the first winding axis direction;
A second bobbin having a second cylindrical part in which the second coil part is formed, and a third collar part and a fourth collar part respectively formed on both sides of the second cylindrical part in the second winding axis direction;
A coil device having a core portion having a first leg portion inserted into a first hollow portion of the first bobbin and a second leg portion inserted into a second hollow portion of the second bobbin. ,
The first bobbin and the second bobbin are arranged so that the first winding axis direction and the second winding axis direction are substantially parallel.
The first flange portion has a first fitting convex portion projecting along a second direction substantially orthogonal to the first winding axis direction with respect to both the first winding axis direction and the second direction. Formed in a pair along a third direction substantially orthogonal to each other,
A second fitting recess that is recessed along the second direction is formed in the second flange part as a pair along the third direction,
A third fitting recess that is recessed along the second direction is formed in the third flange portion as a pair along the third direction.
A fourth fitting convex portion protruding along the second direction is formed in the fourth flange portion as a pair along the third direction,
A pair of the first fitting convex portions can be detachably fitted to the pair of third fitting concave portions along the third direction,
A pair of the fourth fitting convex portions can be detachably fitted to the pair of second fitting concave portions along the third direction, respectively.

  In the coil device according to the present invention, the pair of first fitting convex portions can be detachably fitted to the pair of third fitting concave portions along the third direction, respectively, in the third direction. A pair of the fourth fitting convex portions can be detachably fitted to the pair of second fitting concave portions. For this reason, the first bobbin and the second bobbin are uneven in a total of four locations, two locations in the first winding axis direction (the same applies to the second winding axis direction) and two locations along the third direction. Will be fitted. Accordingly, the first bobbin and the second bobbin can be fixed only by performing concave and convex fitting from the third direction, and it is not necessary to use a holder or the like.

  Before the first bobbin and the second bobbin are combined, the outer periphery of each cylindrical portion is open, so that the work of winding a wire or the like is easy. These bobbins can be assembled and fixed very easily after the coil is formed by winding a wire around each cylinder.

Preferably, a fitting portion between the first fitting convex portion and the third fitting concave portion is formed with a first mounting gap into which one edge of the insulating plate can be inserted,
A second attachment gap into which the other edge of the insulating plate can be inserted is formed in the fitting portion between the fourth fitting convex portion and the second fitting concave portion.

  Preferably, the insulating plate is inserted between the first coil portion and the second coil portion. The insulating plate may be previously attached to the inner bottom wall of the casing. After the first bobbin and the second bobbin are combined, a first mounting gap and a second mounting gap are automatically formed in the fitting portions. If an insulating plate is inserted along these gaps, an insulating plate is disposed between the first coil portion and the second coil portion. Therefore, the insulation between the first coil part and the second coil part is improved. Also, the work of attaching the insulating plate is very easy.

Preferably, a first lead groove through which one end of a first wire constituting the first coil portion is passed is formed in the first flange portion.
A second lead-out groove through which the other end of the first wire passes is formed in the second flange part,
The third hook portion is formed with a third lead groove through which one end of the second wire constituting the second coil portion is passed.
A fourth lead groove through which the other end of the second wire is passed is formed in the fourth flange portion.

  The operation of pulling out the end portion of the wire is facilitated by forming the lead-out groove in each collar portion. Moreover, before connecting the end part of a wire to a terminal, the end part of a wire can be temporarily fixed to a drawer groove, and the connection work to a terminal becomes easy. Each drawing groove is preferably formed with a locking claw, and it is preferable that the end of the wire can be temporarily fixed.

  Preferably, at least one of the first drawing groove, the second drawing groove, the third drawing groove, and the fourth drawing groove is parallel to the first winding axis direction or the second winding axis direction. By comprising in this way, it becomes possible to pull out the end part of a wire substantially parallel to a winding-axis direction.

  Preferably, at least one of the one extraction groove, the second extraction groove, the third extraction groove, and the fourth extraction groove is a wire that supports an end portion of the wire protruding from the extraction groove. Support convex portions are formed. By comprising in this way, the edge part of the wire pulled out from the drawer groove will be supported by a wire support convex part, and it will not contact a core part etc., but insulation will improve.

  Preferably, at least one of the first collar part, the second collar part, the third collar part, and the fourth collar part has an engaging convex part that can be engaged with a hook part formed on the casing. It is formed. By forming in this way, the coil device can be easily attached to the inside of the casing.

Preferably, the first flange portion has a pair of first thick frames extending along the second direction and thick along the first winding axis direction,
The first fitting convex portion is formed at one end portion along the second direction of each first thick frame,
The second flange portion has a pair of second thick frames extending along the second direction and thick along the first winding axis direction,
The second fitting recess is formed at one end along the second direction of each second thick frame,
The third flange has a pair of third thick frames extending along the second direction and thick along the second winding axis direction,
The third fitting recess is formed at one end portion along the second direction of each third thick frame,
The fourth flange has a pair of fourth thick frames extending along the second direction and thick along the second winding axis direction,
The fourth fitting convex portion is formed at one end portion of each fourth thick frame along the second direction.

  By comprising in this way, while becoming easy to form a fitting convex part or a fitting recessed part in the edge part of a thick frame, the intensity | strength of a fitting part also improves. In addition, positioning of the core portion is facilitated.

Preferably, the other ends of the pair of first thick frames are connected by a first connecting thick frame extending in the third direction, and the three directions of the one entrance of the first hollow portion. Is surrounded by a pair of the first thick frame and the first connecting thick frame,
A first receiving recess is formed in the end surface of the first flange portion to accommodate a first base portion that communicates the first leg portion and the second leg portion in the core portion,
The other ends of the pair of second thick frames are connected by a second connecting thick frame extending in the third direction, and the three directions of the other entrance / exit of the first hollow portion are a pair. Of the second thick frame and the second connecting thick frame,
A second receiving recess is formed on the end surface of the second flange portion to receive a second base portion that communicates the first leg portion and the second leg portion in the core portion,
The other ends of the pair of third thick frames are connected by a third connecting thick frame extending in the third direction, and the three directions of the one entrance of the second hollow portion are a pair. Of the third thick frame and the third connecting thick frame,
A third receiving recess for accommodating the first base portion is formed on an end surface of the third flange portion,
The other ends of the pair of fourth thick frames are connected by a fourth connecting thick frame extending in the third direction, and the other three entrances of the second hollow portion have a pair of directions. Of the fourth thick frame and the fourth connecting thick frame,
A fourth receiving recess in which the second base portion is accommodated is formed on the end surface of the fourth flange portion.

  By comprising in this way, the base part of a core part is positioned and attached to the accommodation recessed part currently formed in the end surface of the winding-axis direction of each collar part.

In order to achieve the second object, a coil device according to a second aspect of the present invention includes:
A first bobbin having a first tubular part in which the first coil part is formed, and a first collar part and a second collar part respectively formed on both sides of the first cylindrical part in the first winding axis direction;
A second bobbin having a second cylindrical part in which the second coil part is formed, and a third collar part and a fourth collar part respectively formed on both sides of the second cylindrical part in the second winding axis direction;
A coil device having a core portion having a first leg portion inserted into a first hollow portion of the first bobbin and a second leg portion inserted into a second hollow portion of the second bobbin. ,
The first bobbin and the second bobbin are arranged so that the first winding axis direction and the second winding axis direction are substantially parallel.
A first fitting convex portion that protrudes along a second direction substantially orthogonal to the first winding axis direction is formed on the first flange portion,
A second fitting recess that is recessed along the second direction is formed in the second flange portion,
A third fitting recess that is recessed along the second direction is formed in the third flange portion,
A fourth fitting protrusion that protrudes along the second direction is formed on the fourth flange,
Along the third direction, the first fitting convex portions can be detachably fitted to the third fitting concave portions, respectively.
Along the third direction, the fourth fitting convex portions can be detachably fitted to the second fitting concave portions, respectively.
The fitting portion between the first fitting convex portion and the third fitting concave portion is formed with a first mounting gap into which one edge of the insulating plate can be inserted,
The fitting portion between the fourth fitting convex portion and the second fitting concave portion is formed with a second mounting gap into which the other edge of the insulating plate can be inserted.

  In the coil device according to the second aspect of the present invention, after the first bobbin and the second bobbin are combined, the first mounting gap and the second mounting gap are automatically formed in the fitting portions. It is formed. If an insulating plate is inserted along these gaps, an insulating plate is disposed between the first coil portion and the second coil portion. Therefore, the insulation between the first coil part and the second coil part is improved. Also, the work of attaching the insulating plate is very easy.

  Preferably, the first bobbin and the second bobbin have the same shape. With this configuration, it is possible to function as the first bobbin or function as the second bobbin using a plurality of the same bobbins.

FIG. 1 is an overall perspective view of a noise filter device using a coil device according to an embodiment of the present invention. 2A is a perspective view of the noise filter device shown in FIG. 1 with a casing cover removed. 2B is a side view of the noise filter device shown in FIG. 2A. 3 is an exploded perspective view of the noise filter device shown in FIG. 2A. FIG. 4 is a perspective view of the coil device shown in FIG. FIG. 5 is an exploded perspective view of the coil device shown in FIG. 6 is an exploded perspective view after the bobbin shown in FIG. 5 is combined.

Hereinafter, the present invention will be described based on embodiments shown in the drawings.
The noise filter device 2 shown in FIG. 1 includes a casing 4 having a mounting bracket 70 attached to the bottom, and a casing cover 6 detachably attached to the upper opening end 4a of the casing 4 in the Z-axis direction. From the connection part of the casing 4 and the casing cover 6, the terminals 40-43 (the terminal 41 cannot be seen in FIG. 1) each protrude | jumps out along the X-axis direction.

  In the present embodiment, the casing 4 has a longer width in the X-axis direction than the width in the Y-axis direction, but is not limited to this. Moreover, although the Z-axis direction height of the casing 4 is smaller than the width | variety of the Y-axis direction of the casing 4, it is not limited to this. Specifically, the width of the casing 4 in the Y-axis direction is 15 to 60 mm, the width in the X-axis direction is 20 to 90 mm, and the height in the Z-axis direction is 6 to 25 mm. In the drawing, the X axis, the Y axis, and the Z axis are substantially perpendicular. The X axis coincides with the winding axis direction of the coil section described later, the Y axis coincides with the second direction, and the Z axis coincides with the third direction.

  As shown in FIG. 2A, a coil device 10, a first capacitor 12, and a pair of second capacitors 14 and 15 are built in the casing 4. The coil device 10 includes a first coil part 20a and a second coil part 20b. One lead end 22a1 of the wire 22a constituting the first coil portion 20a is connected to the tip of the rising piece 40a of the terminal 40. The other lead end 22a2 of the wire 22a constituting the first coil portion 20a is connected to the tip of the rising piece 41a of the terminal 41.

  One lead end 22b1 of the wire 22b constituting the second coil portion 22b is connected to the tip of the rising piece 42a of the terminal 42. The other lead end portion 22 b 2 of the wire 22 b constituting the second coil portion 22 a is connected to the tip of the rising piece 43 a of the terminal 43. The wires 22a and 22b are not particularly limited, and wires such as UEW, PEW, and AIW are used.

  In the present embodiment, the terminals 40 to 43 are each formed by being bent into an L shape, and the terminals 40 and 42 are arranged at one end edge in the X axis direction at the upper opening end 4a of the casing 4 in the Y axis direction. Are attached at predetermined intervals. The terminals 41 and 43 are attached to the other end edge in the X-axis direction at the upper opening end 4a of the casing 4 at a predetermined interval in the Y-axis direction.

  One lead wire 12a of the first capacitor 12 arranged at one end in the X-axis direction of the coil device 10 is connected to the tip of the rising piece 40a of the terminal 40 together with the lead end 22a1. The other lead wire 12b of the first capacitor 12 is connected to the tip of the rising piece 42a of the terminal 42 together with the lead end 22b1.

  On the other end of the coil device 10 in the X-axis direction, a pair of second capacitors 14 and 15 are arranged side by side in the axial direction. One lead wire 14a of the second capacitor 14 close to the first coil portion 20a is connected to the tip of the rising piece 41a of the terminal 41 together with the lead end portion 22a2. The other lead wire 14 b of the second capacitor 14 is connected to the tip of the common terminal 72 in the Z-axis direction.

  One lead wire 15a of the second capacitor 15 close to the second coil portion 20b is connected to the tip of the rising piece 43a of the terminal 43 together with the lead end portion 22b2. The other lead wire 15b of the second capacitor 15 is connected to the tip of the common terminal 72 in the Z-axis direction.

  The common terminal 72 is formed by penetrating the bottom wall of the casing 4 and rising from the mounting bracket 70 in the Z-axis direction, and is electrically connected to the mounting bracket 70. The mounting bracket 70 is attached to another member so as to be connected to the ground potential.

  As shown in FIG. 5, the first coil part 20a is formed by winding the first wire 22a around the outer periphery of the first tube part 32a of the first bobbin 30a, and the second coil part 20b is The second wire 22b is wound around the outer periphery of the second cylindrical portion 32b of the second bobbin 30b. The winding direction of the wire in the first coil part 20a and the winding direction of the wire in the second coil part 20b may be the same or different.

  At one end in the X-axis direction of the first tube portion 32a, a first flange portion 33 is integrally formed so as to spread from the first tube portion 32a to a plane including the Z axis and the Y axis. At the other end in the X-axis direction of the first tube portion 32a, a second flange portion 34 is integrally formed so as to spread from the first tube portion 32a to a plane including the Z axis and the Y axis.

  At one end in the X-axis direction of the second cylindrical portion 32b, the third flange portion 35 is integrally formed so as to spread from the second cylindrical portion 32b to a plane including the Z axis and the Y axis. At the other end in the X-axis direction of the second cylindrical portion 32b, a fourth flange portion 35 is integrally formed so as to spread from the second cylindrical portion 32b to a plane including the Z axis and the Y axis. Hereinafter, although the 1st collar part 33, the 2nd collar part 34, the 3rd collar part 35, and the 4th collar part 36 are demonstrated separately, since these have the same structure fundamentally, they are partially described. However, the portions not described may be considered to have the same configuration.

  A pair of first thick frames 33a extending along the Y-axis direction and thick along the X-winding axis direction are formed on the outer end surface of the first flange portion 33 in the X-axis direction. One entrance of the portion 37a is integrally formed so as not to be blocked. One end of each first thick frame 33a along the Y-axis direction is integrally connected by a first connecting thick frame 33b extending along the Z-axis direction.

  The thickness of the first connecting thick frame 33b and the thickness of the first thick frame 33a are preferably the same, but may be different. The first connecting thick frame 33b is not necessarily formed. However, it is preferable that the first connecting thick frame 33b is formed on the outer end surface of the first flange portion 33 so as not to block one of the entrances and exits of the first hollow portion 37a.

  With this configuration, the three directions of the entrance / exit of the first hollow portion 37a are surrounded by the pair of first thick frame 33a and the first connecting thick frame 33b, so that the outside of the first flange portion 33 is A first receiving recess 33d is formed on the end surface. On the outer end surface of the first flange portion 33 where the first housing recess 33d is formed, the end portion in the Y-axis direction of the first base portion 52a of the first split core 50a that constitutes a part of the core portion 50 described later. Has come to fit. In addition, the 1st leg part 54a of the 1st division | segmentation core 50a is inserted in the inside of the 1st hollow part 37a.

  A first fitting convex portion 33c is integrally formed at the other end portion of each first thick frame 33a along the Y-axis direction. These first fitting projections 33c can be detachably fitted from the Z-axis direction to third fitting recesses 35c formed in a third thick frame 35a of a third flange 35, which will be described later. ing. The ends in the Y-axis direction of the pair of first thick frames 33a located on the side on which the first fitting convex portions 33c are integrally formed are not connected by the connecting thick frames, and the first An accommodation recess 33d is opened toward the third flange 35.

  A first extraction groove 33e is formed on the upper surface in the Z-axis direction of the first thick frame 33a near the intersection of the first thick frame 33a and the first connecting thick frame 33b. The first lead-out groove 33e is formed along the X-axis direction, and one lead end portion 22a1 of the first wire 22a constituting the first coil portion 20a is inserted so as to be temporarily fixed. A hook portion is preferably formed inside the first lead-out groove 33e, and the lead end portion 22a1 inserted into the first lead-out groove 33e from above in the Z-axis direction is hooked inside the lead-out groove 33e. It is preferable that it is latched by the part, the retaining is made, and it is temporarily secured.

  The lead end 22a1 extends away from the first thick frame 33a through the first extraction groove 33e and extends outward in the X-axis direction. A wire support convex portion 38a is integrally formed on the outer end surface in the X-axis direction of the first thick frame 33a at a position corresponding to the first lead-out groove 33e. The lead end portion 22a1 drawn out from the first lead-out groove 33e is held on the wire support convex portion 38a, and the lead end portion 22a1 is insulated from being brought into contact with the core portion 50 as shown in FIG. Increases sex.

  As shown in FIG. 5, the first thick frame 33a located on the lower side in the Z-axis direction is also provided with a dummy lead-out groove 33f corresponding to the first lead-out groove 33e, and the wire support A dummy support convex portion 38b is formed corresponding to the convex portion 38a. The dummy lead-out grooves 33f and the dummy support convex portions 38b have shapes corresponding to the first lead-out grooves 33e and the wire support convex portions 38a, respectively, and are formed at symmetrical positions with respect to the Y axis. These dummy lead-out grooves 33f and dummy support convex portions 38b can also function as lead-out grooves or wire support portions where the wires are actually temporarily fixed.

  As shown in FIG. 6, an engaging convex portion 39a is formed on the outer end surface in the X-axis direction of the first thick frame 33a outside the dummy supporting convex portion 38b in the Y-axis direction. A hook portion 9 formed integrally with the inner surface of the bottom wall of the casing 4 shown in FIG. 3 is detachably engageable with the engaging convex portion 39a. Only by installing the coil device 10 inside the casing 4, the hook portion 9 is engaged with the engaging convex portion 39 a, and the coil device 10 can be positioned and fixed inside the casing 4.

  Corresponding to the engaging convex portion 39a, a dummy engaging convex portion 39b is formed on the first thick frame 33a located on the upper side in the Z-axis direction. The dummy engagement protrusions 39b have shapes corresponding to the engagement protrusions 39a, respectively, and are formed at positions symmetrical with respect to the Y axis. The dummy engaging convex portion 39b can also function as an engaging convex portion that is actually engaged with the hook portion 9.

  As shown in FIG. 5, a pair of second thick frames 34a extending along the Y-axis direction and thick along the X-winding axis direction are provided on the outer end surface in the X-axis direction of the second flange 34. The other entrance of the first hollow portion 37a of the cylindrical portion 32a is integrally formed so as not to be blocked. One end of each second thick frame 34a along the Y-axis direction is integrally connected by a second connecting thick frame 34b extending along the Z-axis direction.

  The thickness of the second connecting thick frame 34b and the thickness of the second thick frame 34a are preferably the same, but may be different. Further, the second connecting thick frame 34b is not necessarily formed. However, it is preferable that the second connecting thick frame 34b is formed on the outer end surface of the second flange portion 34 so as not to block the other entrance / exit of the first hollow portion 37a.

  With this configuration, the three directions of the other entrance / exit of the first hollow portion 37a are surrounded by the pair of second thick frame 34a and the second connecting thick frame 34b, and the second flange 34 A second housing recess 34d is formed on the outer end surface of the first housing. On the outer end surface of the second flange portion 34 in which the second housing recess 34d is formed, the end portion in the Y-axis direction of the first base portion 52b of the second divided core 50b that constitutes a part of the core portion 50 described later. Has come to fit.

  In addition, the 1st leg part 54b of the 2nd division | segmentation core 50b is inserted in the inside of the 1st hollow part 37a. The tip of the first leg 54a and the tip of the first leg 54b are preferably joined by an adhesive or the like inside the first hollow portion 37a, but a gap or the like may be provided without being joined.

  A second fitting recess 34c is integrally formed on the other end of each second thick frame 34a along the Y-axis direction. These second fitting recesses 34c can be detachably fitted from the Z-axis direction to fourth fitting projections 36c formed on a fourth thick frame 36a of a fourth flange 36, which will be described later. ing. The ends in the Y-axis direction of the pair of second thick frames 34a located on the side where the second fitting recesses 34c are integrally formed are not connected by the connecting thick frames, and the second housing A recess 34 d is opened toward the fourth flange 36.

  Near the intersection of the second thick frame 34a and the second connecting thick frame 34b, a second lead groove 34e is formed on the upper surface in the Z-axis direction of the second thick frame 34a. The second lead groove 34e is formed along the X-axis direction, and the other lead end portion 22a2 of the first wire 22a constituting the first coil portion 20a is inserted so as to be temporarily fixed. A hook portion is preferably formed inside the second lead-out groove 34e, and the lead end portion 22a2 inserted into the second lead-out groove 34e from above in the Z-axis direction is hooked inside the lead-out groove 34e. It is preferable that it is latched by the part, the retaining is made, and it is temporarily secured.

  The lead end 22a2 extends away from the second thick frame 34a through the second extraction groove 34e and extends outward in the X-axis direction. A wire support convex portion 38a that cannot be seen in FIG. 5 is integrally formed on the outer end surface in the X-axis direction of the second thick frame 34a at a position corresponding to the second extraction groove 34e. Similar to the wire support convex portion 38 a of the first flange 33, the lead end portion 22 a 2 drawn out from the second lead groove 34 e is held on the wire support convex portion 38 a, and the lead end portion 22 a 2 is attached to the core portion 50. Insulation is improved by suppressing contact.

  As shown in FIG. 5, a dummy lead-out groove 34f (not visible in the drawing) is also formed in the second thick frame 34a located on the lower side in the Z-axis direction corresponding to the second lead-out groove 34e. In addition, a dummy support protrusion 38b (not visible in the figure) is formed corresponding to the wire support protrusion 38a. These dummy lead-out grooves 34f and dummy support convex portions 38b have shapes corresponding to the second lead-out grooves 34e and wire support convex portions 38a, respectively, and are formed at positions symmetrical with respect to the Y axis. These dummy lead-out grooves 34f and dummy support convex portions 38b can also function as lead-out grooves or wire support portions where the wires are actually temporarily fixed.

  Although not visible in FIG. 6, on the outer side in the Y-axis direction of the dummy support convex portion 38b and on the outer end surface in the X-axis direction of the second thick frame 34a, the same relationship as the engagement convex portion 39a of the first flange 33 is provided. Joint convex part 39a is formed. A hook portion 9 formed integrally with the inner surface of the bottom wall of the casing 4 shown in FIG. 3 is detachably engageable with the engaging convex portion 39a. Only by installing the coil device 10 inside the casing 4, the hook portion 9 is engaged with the engaging convex portion 39 a, and the coil device 10 can be positioned and fixed inside the casing 4.

  Corresponding to the engaging convex portion 39a, a dummy engaging convex portion 39b similar to the dummy engaging convex portion 39b of the first flange portion 33 is formed on the second thick frame 34a located on the upper side in the Z-axis direction. It is. The dummy engagement protrusions 39b have shapes corresponding to the engagement protrusions 39a, respectively, and are formed at positions symmetrical with respect to the Y axis. The dummy engaging convex portion 39b can also function as an engaging convex portion that is actually engaged with the hook portion 9.

  As shown in FIG. 5, a pair of third thick frames 35 a extending along the Y-axis direction and thick along the X-winding axis direction are provided on the outer end surface in the X-axis direction of the third flange 35. One entrance of the second hollow portion 37b of the cylindrical portion 32b is integrally formed so as not to be blocked. One end of each third thick frame 35a along the Y-axis direction is integrally connected by a third connecting thick frame 35b extending along the Z-axis direction.

  The thickness of the third linking thick frame 35b and the thickness of the third thick frame 34a are preferably the same, but may be different. Further, the third linking thick frame 35b is not necessarily formed. However, it is preferable that the third connecting thick frame 35b is formed on the outer end surface of the third flange portion 35 so as not to block the other entrance / exit of the second hollow portion 37b. Moreover, it is preferable that the thickness of the 3rd thick frame 35a and the thickness of the 1st thick frame 33a are the same.

  By configuring in this way, the three directions of one of the entrances and exits of the second hollow portion 37b are surrounded by the pair of third thick frame 35a and the third connecting thick frame 35b. A third accommodation recess 35d is formed on the outer end surface of the first housing. On the outer end surface of the third flange 34 where the third housing recess 34d is formed, the end in the Y-axis direction of the first base portion 52b of the first split core 50a that constitutes a part of the core portion 50 described later. Has come to fit.

  The second leg portion 56a of the first split core 50a is inserted into the second hollow portion 37b. The tip of the second leg portion 56a and the tip of the second leg portion 56b are preferably joined by an adhesive or the like inside the second hollow portion 37b, but a gap or the like may be provided without being joined.

  A third fitting recess 35c is integrally formed on the other end of each third thick frame 35a along the Y-axis direction. These third fitting recesses 35c can be detachably fitted to the first fitting protrusions 33c formed on the first thick frame 33a of the first flange 33 from the Z-axis direction. . The ends in the Y-axis direction of the pair of third thick frames 35a located on the side where the third fitting recesses 35c are integrally formed are not connected by the connecting thick frames, and the third housing A recess 35 d is opened toward the first flange 33.

  A third extraction groove 35e is formed on the upper surface in the Z-axis direction of the third thick frame 35a near the intersection of the third thick frame 35a and the third connecting thick frame 35b. The third lead groove 35e is formed along the X-axis direction, and one lead end portion 22b1 of the second wire 22b constituting the second coil portion 20b is inserted so as to be temporarily fixed. A hook portion is preferably formed inside the third lead-out groove 35e, and the lead end 22b1 inserted into the third lead-out groove 35e from above in the Z-axis direction is hooked inside the lead-out groove 35e. It is preferable that it is latched by the part, the retaining is made, and it is temporarily secured.

  The lead end 22b1 extends away from the third thick frame 35a through the third extraction groove 35e and extends outward in the X-axis direction. A wire support convex portion 38a is integrally formed on the X-axis direction outer end surface of the third thick frame 35a at a position corresponding to the third drawing groove 35e. Similarly to the wire support convex portion 38 a of the first flange portion 33, the lead end portion 22 b 1 drawn out from the third extraction groove 35 e is held on the wire support convex portion 38 a, and the lead end portion 22 b 1 is attached to the core portion 50. Insulation is improved by suppressing contact.

  As shown in FIG. 5, the third thick frame 35a located on the lower side in the Z-axis direction is also provided with a dummy lead-out groove 35f corresponding to the third lead-out groove 35e, and supports the wire. A dummy support convex portion 38b is formed corresponding to the convex portion 38a. These dummy lead-out grooves 35f and dummy support convex portions 38b have shapes corresponding to the third lead-out grooves 35e and wire support convex portions 38a, respectively, and are formed at symmetrical positions with respect to the Y axis. These dummy lead-out grooves 35f and dummy support convex portions 38b can also function as lead-out grooves or wire support portions where the wire is actually temporarily fixed.

  As shown in FIG. 6, on the outer side in the Y-axis direction of the dummy support convex portion 38b and on the outer end surface in the X-axis direction of the third thick frame 34a, the same relationship as the engaging convex portion 39a of the first flange portion 33 is obtained. Joint convex part 39a is formed. A hook portion 9 formed integrally with the inner surface of the bottom wall of the casing 4 shown in FIG. 3 is detachably engageable with the engaging convex portion 39a. Only by installing the coil device 10 inside the casing 4, the hook portion 9 is engaged with the engaging convex portion 39 a, and the coil device 10 can be positioned and fixed inside the casing 4.

  Corresponding to the engaging convex portion 39a, a dummy engaging convex portion 39b similar to the dummy engaging convex portion 39b of the first flange portion 33 is formed on the third thick frame 35a located on the upper side in the Z-axis direction. It is. The dummy engagement protrusions 39b have shapes corresponding to the engagement protrusions 39a, respectively, and are formed at positions symmetrical with respect to the Y axis. The dummy engaging convex portion 39b can also function as an engaging convex portion that is actually engaged with the hook portion 9.

  A fourth fitting convex portion 36c is integrally formed at the other end portion along the Y-axis direction of each fourth thick frame 36a. These fourth fitting convex portions 36c can be detachably fitted from the Z-axis direction to the second fitting concave portions 34c of the second flange 34, respectively. The ends in the Y-axis direction of the pair of fourth thick frames 36a located on the side where the fourth fitting convex portions 36c are integrally formed are not connected by the connecting thick frames, and the fourth An accommodation recess 36 d is opened toward the second flange 34.

  A fourth extraction groove 36e is formed on the upper surface in the Z-axis direction of the fourth thick frame 36a near the intersection between the fourth thick frame 36a and the fourth connecting thick frame 36b. The fourth lead groove 36e is formed along the X-axis direction, and the other lead end portion 22b2 of the second wire 22b constituting the second coil portion 20b is inserted so as to be temporarily fixed. A hook portion is preferably formed inside the fourth lead groove 36e, and the lead end portion 22b2 inserted into the fourth lead groove 36e from above in the Z-axis direction is hooked inside the lead groove 36e. It is preferable that it is latched by the part, the retaining is made, and it is temporarily secured.

  The lead end 22b2 extends away from the fourth thick frame 36a through the fourth extraction groove 36e and extends outward in the X-axis direction. A wire support convex portion 38a (invisible in the shadow of the fourth collar portion in FIG. 5) is integrally formed on the outer end surface in the X-axis direction of the fourth thick frame 36a at a position corresponding to the fourth extraction groove 36e. It is formed. Similarly to the wire support convex portion 38 a of the first flange portion 33, the lead end portion 22 b 2 drawn out from the fourth lead groove 36 e is held on the wire support convex portion 38 a, and the lead end portion 22 b 2 is attached to the core portion 50. Insulation is improved by suppressing contact.

  As shown in FIG. 5, the fourth thick frame 36a located on the lower side in the Z-axis direction is also provided with a dummy lead-out groove 36f corresponding to the fourth lead-out groove 36e. Corresponding to the convex portion 38a, a dummy supporting convex portion 38b (not visible in the figure) is formed. These dummy lead-out grooves 36f and dummy support convex portions 38b have shapes corresponding to the fourth lead-out grooves 36e and wire support convex portions 38a, respectively, and are formed at positions symmetrical with respect to the Y axis. The dummy lead-out grooves 36f and the dummy support protrusions 38b can also function as lead-out grooves or wire support portions where the wire is actually temporarily fixed.

  Although not visible in FIG. 6, on the outer side in the Y-axis direction of the dummy support convex portion 38b and on the outer end surface in the X-axis direction of the fourth thick frame 36a, the same relationship as that of the engaging convex portion 39a of the first flange 33 is provided. Joint convex part 39a is formed. A hook portion 9 formed integrally with the inner surface of the bottom wall of the casing 4 shown in FIG. 3 is detachably engageable with the engaging convex portion 39a. Only by installing the coil device 10 inside the casing 4, the hook portion 9 is engaged with the engaging convex portion 39 a, and the coil device 10 can be positioned and fixed inside the casing 4.

  Corresponding to the engagement protrusion 39a, a dummy engagement protrusion 39b similar to the dummy engagement protrusion 39b of the first flange 33 is formed on the fourth thick frame 36a located on the upper side in the Z-axis direction. It is. The dummy engagement protrusions 39b have shapes corresponding to the engagement protrusions 39a, respectively, and are formed at positions symmetrical with respect to the Y axis. The dummy engaging convex portion 39b can also function as an engaging convex portion that is actually engaged with the hook portion 9.

  As shown in FIG. 5, before the first bobbin 30a and the second bobbin 30b are combined, the wires 22a and 22b are wound around the cylindrical portions 32a and 32b of these bobbins to form the coil portions 20a and 20b. Therefore, the winding operation is easy. After the coil portions 20a and 20b are formed, these bobbins 30a and 30b are assembled.

  When assembling, the direction of the first winding axis of the first coil portion 20a and the direction of the winding axis of the second coil portion 20b are matched, and one of the bobbins 30a and 30b is relatively moved in the Z-axis direction. The fitting projection and the fitting recess are arranged so that the positions in the X-axis and Y-axis directions are aligned. Thereafter, by relatively moving these bobbins 30a and 30b in the Z-axis direction, the fitting convex portion 33c is inserted into the fitting concave portion 35c, and the fitting convex portion 36c is inserted into the fitting concave portion 34c. Mating is performed.

  The state is shown in FIG. Next, the core part 50 which consists of the 1st division | segmentation core 50a and the 2nd division | segmentation core 50b is assembled. The first split core 50a includes a first base portion 52a extending in the Y-axis direction, a first leg portion 54a projecting in the X-axis direction from one end of the first base portion 52a in the Y-axis direction, and the first base portion 52a. A second leg portion 56a protruding in the X-axis direction from the other end in the Y-axis direction.

  The second split core 50b includes a second base portion 52b extending in the Y-axis direction, a first leg portion 54b projecting in the X-axis direction from one end of the second base portion 52b in the Y-axis direction, and a second base portion 52b. A second leg portion 56b protruding in the X-axis direction from the other end in the Y-axis direction. The first leg portion 54a is inserted into the hollow portion 37a from one end in the X-axis direction of the first hollow portion 37a, and the second leg portion 56a is inserted into the hollow portion 37b from one end in the X-axis direction of the second hollow portion 37b. Is inserted inside. The first leg portion 54b is inserted into the hollow portion 37a from the other end in the X-axis direction of the first hollow portion 37a, and the second leg portion 56b is hollow from the other end in the X-axis direction of the second hollow portion 37b. It is inserted into the part 37b.

  The front ends of the first leg portions 54a and 54b are bonded inside the hollow portion 37a. Alternatively, they are abutted at a predetermined gap. The tips of the second leg portions 56a and 56b are bonded inside the hollow portion 37b. Alternatively, they are abutted at a predetermined gap.

  The cores 50a and 50b are not particularly limited, but each is a magnetic body, and is composed of a ferrite composition, a metal composition, a composite composition of these with a resin, and the like, and firing after compression molding and firing after injection molding. Or, it is manufactured by a general method such as compacting.

  The resins constituting the bobbins 20a and 20b are preferably the same material, but are not particularly limited. For example, the resin is preferably made of an insulating material such as a resin, such as PBT, PET, phenol resin, and nylon. It is particularly preferable to be manufactured by. The bobbins 20a and 20b preferably have the same shape. By comprising in this way, it becomes possible to function as the 1st bobbin 20a, or to function as the 2nd bobbin 20b, using the some same bobbin shape | molded using the same metal mold | die.

  When the core portion 50 is assembled after the first bobbin 20a and the second bobbin 20b are assembled, as shown in FIG. 6, the first leg portion 52a of the first split core 50a is attached to the first hollow portion 37a. It is only necessary to insert from one end in the X-axis direction and insert the second leg portion 56a from one end in the X-axis direction of the second hollow portion 37b. Similarly, the first leg portion 52b of the second split core 50b is inserted from the other end in the X-axis direction of the first hollow portion 37a, and the second leg portion 56a is inserted from the other end in the X-axis direction of the second hollow portion 37b. Just do it.

  As a result, the first base portion 52a is positioned and accommodated inside the housing recesses 33d and 35d communicating with the first flange portion 33 and the third flange portion 35. Similarly, the second base portion 52b is positioned and accommodated inside the accommodating recesses 34d and 36d (see FIG. 5) communicating with each other through the second flange portion 34 and the fourth flange portion 36. FIGS. 3 and 4 show a state in which the core portion 50 including the first divided core 50a and the second divided core 50b is attached to the assembled bobbins 30a and 30b.

  The coil device 10 including the bobbins 30a and 30b to which the core unit 50 is attached is attached to the inside of the casing 4 together with the terminals 40 to 43. An insulating plate 8 is formed integrally with the casing 4 on the bottom wall of the casing 4. The insulating plate 8 may be molded separately from the casing 4.

  The casing 4 and the insulating plate 8 shown in FIG. 3 are made of an insulating material. The casing 4 and the insulating plate 8 are preferably made of the same insulating material, but may be made of different insulating materials. As the insulating material, for example, the same type of insulating material as the bobbins 20a and 20b is exemplified, but the insulating material may be made of different insulating materials.

  In the present embodiment, the first mounting gap 31a into which one edge of the insulating plate 8 can be inserted inside the fitting portion where the first fitting convex portion 33c is fitted in the third fitting concave portion 35c. Is formed. Further, a second mounting gap 31b into which the other edge of the insulating plate 8 can be inserted is formed inside the fitting portion where the fourth fitting convex portion 36c is fitted in the second fitting concave portion 34c. It is.

  In the present embodiment, stepped surfaces that are displaced in the Y-axis direction are formed on both sides of the fitting convex portions 33c and 36c in the X-axis direction so that such gaps 31a and 31b are formed in the fitting portion. It is. Alternatively, stepped convex portions that are displaced in the Y-axis direction are formed on both sides of the fitting concave portions 35c and 34c in the X-axis direction so that such gaps 31a and 31b are formed in the fitting portion. There may be.

  In the present embodiment, as shown in FIG. 3, only the coil device 10 having the combined bobbins 30a and 30b is placed inside the casing 4, and the edges on both sides of the insulating plate 8 in the X-axis direction are respectively It enters along the gaps 31a and 31b. As a result, as shown in FIG. 2A, the insulating plate 8 enters between the first coil portion 20a and the second coil portion 20b to ensure the insulation therebetween.

  The terminals 40 to 43 are attached to attachment recesses 4 b provided at the four corners of the upper opening end 4 of the casing 4. The terminals 40 to 43 are not particularly limited, but are made of metal such as copper or copper alloy. These terminals 40 to 43 can be integrated by insert molding or the like when the casing 4 is formed by injection molding or the like, but may be attached to the casing 4 by other methods.

  Temporary fastening claws 44a are formed at the tips of the rising pieces 40a to 43a of the terminals 40 to 43 before soldering or brazing, and lead ends 22a1 and 22a2 protruding from the coil device 10. , 22b1 and 22b2 can be temporarily fixed.

  In the state where the coil device 10 is installed inside the casing 4, the upper ends in the Z-axis direction of the rising pieces 40 a to 43 a of the terminals 40 to 43 are from the upper opening end 4 a of the casing 4 as shown in FIG. Is also located above in the Z-axis direction. Further, the upper ends of the rising pieces 40a to 43a of the terminals 40 to 43 in the Z-axis direction are positioned above the bobbins 30a and 30b and the coil portions 20a and 20b of the coil device 10 in the Z-axis direction. Further, they are located above the first capacitor 12 and the second capacitors 14 and 15 shown in FIG. 2A in the Z-axis direction. The upper ends of the common terminals 72 are also the same as the upper ends of these rising pieces 40a to 43a.

  Therefore, as shown in FIG. 2B, it is easy to form a joint 44 by soldering or brazing at the upper ends of these rising pieces 40 a to 43 a and the upper end of the common terminal 72. For example, in the state shown in FIG. 2B, the upper end of the rising pieces 40a to 43a and the common terminal 72 are simply dipped on the liquid surface such as molten solder by turning the casing 4 upside down in the Z-axis direction. The joining portion 44 can be easily formed on the upper end of each.

  In the coil device 10 according to the present embodiment, the pair of third fitting recesses 35 and the pair of first fitting protrusions 33c can be detachably fitted along the Z-axis direction, respectively, in the Z direction. A pair of fourth fitting convex portions 36c can be detachably fitted to the pair of second fitting concave portions 34c. For this reason, the first bobbin 30a and the second bobbin 30b are concavo-convexly fitted at a total of four locations at two locations apart from X and two locations along the Z-axis direction. Therefore, the first bobbin 30a and the second bobbin 30b can be fixed only by performing concave and convex fitting from the Z-axis direction, and there is no need to use a holder or the like.

  Before the first bobbin 30a and the second bobbin 30b are combined, the outer circumferences of the cylindrical portions 32a and 32b are open, so that the work of winding the wires 22a and 22b and the like is easy. After the wires 22a and 22b are wound around the cylindrical portions 32a and 32b to form the coil portions 20a and 20b, the bobbins 30a and 30b can be assembled and fixed very easily.

  Further, in the present embodiment, as shown in FIG. 3, after the first bobbin 30a and the second bobbin 30b are combined, the fitting portion includes a first mounting gap 31a and a second mounting gap 31b. Is formed automatically. If the insulating plate 8 is inserted along the gaps 31a and 31b, an insulating plate is disposed between the first coil portion and the second coil portion. Therefore, the insulation between the 1st coil part 20a and the 2nd coil part 20b improves. Also, the work of attaching the insulating plate 8 is very easy.

  Furthermore, in this embodiment, the drawing-out grooves 33e to 36e are formed in the flange portions 33 to 36, so that the work of pulling out the end portions 22a1, 22a2, 22b1, and 22b2 of the wires 22a and 22b is facilitated. Moreover, before connecting the wire end portions 22a1, 22a2, 22b1, 22b2 to the terminals 40 to 43, the wire end portions can be temporarily fixed to the lead-out grooves 33e to 36e, and the connection work to the terminals 40 to 43 can be performed. Will also be easier.

  Furthermore, since these lead-out grooves 33e to 36e are parallel to the X-axis direction, it becomes easy to draw the end portions 22a1, 22a2, 22b1, and 22b2 of the wire substantially parallel to the winding axis direction.

  Furthermore, since the wire support convex part 38a which supports the edge part of the wire jumping out from the drawing groove is formed in the drawing grooves 33e-36e, the edge part of the wire drawn out from the drawing grooves 33e-36e is Therefore, it is supported by the wire support convex portion 38a, and does not come into contact with the core portion 50 or the like, so that the insulation is improved.

  Further, at least one of the flange portions 33 to 36 is formed with an engaging convex portion 39 a that can be engaged with the hook portion 9 formed on the casing 4. By forming in this way, the coil device 10 can be easily attached to the inside of the casing 4.

  Moreover, in this embodiment, since the thick frames 33a-36a are formed in each collar part 33-36, fitting convex part 33c, 36c or fitting is carried out to the edge part of the Y-axis direction of thick frame 33a-36a. The joint recesses 34c and 35c can be easily formed, and the strength of the fitting portion is improved. Further, the positioning of the core part 50 is facilitated. Further, the base portions 52a and 52b of the core portion 50 are positioned and attached to the housing recesses 33d to 36d formed on the end surfaces of the flange portions 33 to 36 in the winding axis direction.

  The present invention is not limited to the above-described embodiment, and can be variously modified within the scope of the present invention.

  For example, in the above-described embodiment, the connecting portion between the flange portion 33 and the flange portion 34 is formed with two uneven fitting portions in the Z-axis direction, and the connecting portion between the flange portion 34 and the flange portion 36. Has two concave-convex fitting portions formed in the Z-axis direction. However, in the present invention, in the connecting portion between the flange portion 33 and the flange portion 34, any uneven fitting portion may be omitted, and in the connecting portion between the flange portion 34 and the flange portion 36, either The uneven fitting portion may be omitted.

  In the above-described embodiment, the shape of the flange portions 33 to 36 is a rectangular shape when viewed from the X-axis direction, but is not limited to this, and may be other polygonal shapes, or a circular shape or an elliptical shape. There may be. However, it is preferable that the connection part of the collar parts combined in the Y-axis direction is linear in the Z-axis direction. In the embodiment described above, the cylindrical portions 32a and 32b shown in FIG. 5 have a cylindrical shape, but are not limited thereto, and may be an elliptical cylindrical shape or a polygonal cylindrical display.

  Furthermore, in the embodiment described above, the core portion 50 is configured by a combination of substantially C-shaped divided cores. However, as the core portion 50, a substantially C-shaped divided core and a substantially I-shaped divided core are used. You may comprise by the combination. In that case, the base part, the first leg part, and the second leg part are integrally formed on the substantially C-shaped split core, and the length of these leg parts is the X of the hollow parts 37a, 37b. Corresponds to the axial length. Alternatively, the core unit 50 may be configured by a combination of four I-shaped split cores. Two of these four I-shaped split cores constitute a first leg and a second leg.

  Moreover, in embodiment mentioned above, although the coil apparatus 10 is used as some noise filters, such as a single phase EMC filter, it can be used also for other uses, for example, uses, such as a line filter.

2 ... Noise filter 4 ... Casing 4a ... Upper opening end 6 ... Casing cover 8 ... Insulating plate 9 ... Hook 10 ... Coil device 12 ... First capacitor 12a, 12b ... Lead wire 14, 15 ... Second capacitor 20a ... First Coil portion 20b ... Second coil portion 22a ... First wire 22a1, 22a2 ... Lead end portion 22b ... Second wire 22b1, 22b2 ... Lead end portion 30a ... First bobbin 30b ... Second bobbin 31a ... First mounting gap 31b 2nd mounting gap 32a ... 1st cylinder part 32b ... 2nd cylinder part 33 ... 1st collar part 33a ... 1st thick frame 33b ... 1st connection thick frame 33c ... 1st fitting convex part 33d ... 1st accommodation recessed part 33e ... 1st extraction groove 33f ... Dummy extraction groove 34 ... 2nd collar part 34a ... 2nd thick frame 34b ... 2nd connection thick frame 34c ... 2nd fitting recessed part 4d ... 2nd accommodation recessed part 34e ... 2nd drawer groove 34f ... Dummy drawer groove 35 ... 3rd collar part 35a ... 3rd thick frame 35b ... 3rd connection thick frame 35c ... 3rd fitting recessed part 35d ... 3rd Housing recess 35e ... 3rd drawer groove 35f ... Dummy drawer groove 36 ... 4th brim part 36a ... 4th thick frame 36b ... 4th connection thick frame 36c ... 4th fitting convex part 36d ... 4th accommodation recessed part 36e ... 4th extraction groove 36f ... Dummy extraction groove 37a ... 1st hollow part 37b ... 2nd hollow part 38a ... Wire support convex part 38b ... Dummy support convex part 39a ... Engagement convex part 39b ... Dummy engagement convex part 40-43 ... Terminals 40a to 43a ... Standing piece 44 ... Connection part 44a ... Temporary fastening claw part 50 ... Core part 50a ... First divided core 50b ... Second divided cores 52a, 52b ... Base parts 54a, 54b ... First leg part 56a, 56b ... second Part 70: mounting bracket 72 ... common terminal

Claims (11)

A first bobbin having a first tubular part in which the first coil part is formed, and a first collar part and a second collar part respectively formed on both sides of the first cylindrical part in the first winding axis direction;
A second bobbin having a second cylindrical part in which the second coil part is formed, and a third collar part and a fourth collar part respectively formed on both sides of the second cylindrical part in the second winding axis direction;
A coil device having a core portion having a first leg portion inserted into a first hollow portion of the first bobbin and a second leg portion inserted into a second hollow portion of the second bobbin. ,
The first bobbin and the second bobbin are arranged so that the first winding axis direction and the second winding axis direction are substantially parallel.
The first flange portion has a first fitting convex portion projecting along a second direction substantially orthogonal to the first winding axis direction with respect to both the first winding axis direction and the second direction. Formed in a pair along a third direction substantially orthogonal to each other,
A second fitting recess that is recessed along the second direction is formed in the second flange part as a pair along the third direction,
A third fitting recess that is recessed along the second direction is formed in the third flange portion as a pair along the third direction.
A fourth fitting convex portion protruding along the second direction is formed in the fourth flange portion as a pair along the third direction,
A pair of the first fitting convex portions can be detachably fitted to the pair of third fitting concave portions along the third direction,
A coil device, wherein the pair of fourth fitting convex portions can be detachably fitted to the pair of second fitting concave portions along the third direction, respectively. The fitting portion between the first fitting convex portion and the third fitting concave portion is formed with a first mounting gap into which one edge of the insulating plate can be inserted,
2. The second mounting gap into which the other edge of the insulating plate can be inserted is formed in the fitting portion between the fourth fitting convex portion and the second fitting concave portion. Coil device.   The coil device according to claim 2, wherein the insulating plate is disposed between the first coil portion and the second coil portion. A first lead groove through which one end of a first wire constituting the first coil portion is passed is formed in the first flange portion,
A second lead-out groove through which the other end of the first wire passes is formed in the second flange part,
The third hook portion is formed with a third lead groove through which one end of the second wire constituting the second coil portion is passed.
The coil device according to any one of claims 1 to 3, wherein a fourth extraction groove through which the other end of the second wire is passed is formed in the fourth flange portion.   5. The at least one of the first drawing groove, the second drawing groove, the third drawing groove, and the fourth drawing groove is parallel to the first winding axis direction or the second winding axis direction. The coil apparatus as described.   At least one of the one drawing groove, the second drawing groove, the third drawing groove, and the fourth drawing groove has a wire support convex portion that supports an end portion of the wire protruding from the drawing groove. The coil device according to claim 4 or 5, wherein:   At least one of the first collar part, the second collar part, the third collar part and the fourth collar part is formed with an engaging convex part which can be engaged with a hook part formed on the casing. The coil device according to any one of claims 1 to 6. The first flange portion has a pair of first thick frames extending along the second direction and thick along the first winding axis direction,
The first fitting convex portion is formed at one end portion along the second direction of each first thick frame,
The second flange portion has a pair of second thick frames extending along the second direction and thick along the first winding axis direction,
The second fitting recess is formed at one end along the second direction of each second thick frame,
The third flange has a pair of third thick frames extending along the second direction and thick along the second winding axis direction,
The third fitting recess is formed at one end portion along the second direction of each third thick frame,
The fourth flange has a pair of fourth thick frames extending along the second direction and thick along the second winding axis direction,
The coil device according to any one of claims 1 to 7, wherein the fourth fitting convex portion is formed at one end portion of each fourth thick frame along the second direction. The other ends of the pair of first thick frames are connected by a first connecting thick frame extending in the third direction, and the three directions of one of the entrances and exits of the first hollow portion are a pair. Of the first thick frame and the first connecting thick frame,
A first receiving recess is formed in the end surface of the first flange portion to accommodate a first base portion that communicates the first leg portion and the second leg portion in the core portion,
The other ends of the pair of second thick frames are connected by a second connecting thick frame extending in the third direction, and the three directions of the other entrance / exit of the first hollow portion are a pair. Of the second thick frame and the second connecting thick frame,
A second receiving recess is formed on the end surface of the second flange portion to receive a second base portion that communicates the first leg portion and the second leg portion in the core portion,
The other ends of the pair of third thick frames are connected by a third connecting thick frame extending in the third direction, and the three directions of the one entrance of the second hollow portion are a pair. Of the third thick frame and the third connecting thick frame,
A third receiving recess for accommodating the first base portion is formed on an end surface of the third flange portion,
The other ends of the pair of fourth thick frames are connected by a fourth connecting thick frame extending in the third direction, and the other three entrances of the second hollow portion have a pair of directions. Of the fourth thick frame and the fourth connecting thick frame,
9. The coil device according to claim 8, wherein a fourth housing recess in which the second base portion is accommodated is formed on an end surface of the fourth flange portion. A first bobbin having a first tubular part in which the first coil part is formed, and a first collar part and a second collar part respectively formed on both sides of the first cylindrical part in the first winding axis direction;
A second bobbin having a second cylindrical part in which the second coil part is formed, and a third collar part and a fourth collar part respectively formed on both sides of the second cylindrical part in the second winding axis direction;
A coil device having a core portion having a first leg portion inserted into a first hollow portion of the first bobbin and a second leg portion inserted into a second hollow portion of the second bobbin. ,
The first bobbin and the second bobbin are arranged so that the first winding axis direction and the second winding axis direction are substantially parallel.
A first fitting convex portion that protrudes along a second direction substantially orthogonal to the first winding axis direction is formed on the first flange portion,
A second fitting recess that is recessed along the second direction is formed in the second flange portion,
A third fitting recess that is recessed along the second direction is formed in the third flange portion,
A fourth fitting protrusion that protrudes along the second direction is formed on the fourth flange,
Along the third direction, the first fitting convex portions can be detachably fitted to the third fitting concave portions, respectively.
Along the third direction, the fourth fitting convex portions can be detachably fitted to the second fitting concave portions, respectively.
The fitting portion between the first fitting convex portion and the third fitting concave portion is formed with a first mounting gap into which one edge of the insulating plate can be inserted,
A coil having a second mounting gap into which the other edge of the insulating plate can be inserted is formed in a fitting portion between the fourth fitting convex portion and the second fitting concave portion. apparatus.   The coil device according to claim 1, wherein the first bobbin and the second bobbin have the same shape.