JP2008172155A - Coil component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coil component which ensures superior normal-mode characteristics and space saving. <P>SOLUTION: A coil component includes a drum core 20, a first coil 30A arranged at a spool section 24, a second coil 30B arranged at the spool section 24, a ring core 40 which has an insertion hole 41 for inserting the drum core 20 as well as at least two notch sections 45 on a facing surface 43b in opposition to either a first collar section 21 or a second collar section 22 and is arranged to surround the first coil 30A and the second coil 30B, and terminal members 50 which are fixed to both end sides of the notch sections 45 on the ring core 40 and to which terminals 32A and 32B are connected. The terminals 32A and 32B are pulled out respectively from the notch sections 45, and the terminal 32A is electrically connected with the terminal member 50 positioned at one end side of the notch sections 45, while the terminal 32B is electrically connected with the terminal member 50 positioned at the other end side of the notch sections 45. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to a coil component mounted on various electronic devices.

  Conventionally, various common mode choke coils have been used as coil components in order to remove a common mode component noise signal (common mode signal). In the common mode choke coil, it is desired that the normal mode characteristic that the signal of the normal mode component (normal mode signal) is transmitted as it is without causing much attenuation is desired. Among such common mode choke coils, those for DC use relatively thick conductors in order to reduce DC resistance and ensure a rated current. Further, it can be said that the common mode choke coil generally has better normal mode characteristics as the impedance in the normal mode is lower.

  Such a common mode choke coil includes a type using a drum core and a ring core. As this type of common mode choke coil, there is one disclosed in Patent Document 1.

Japanese Patent Laying-Open No. 2006-210827 (see abstract, FIG. 2, FIG. 6, etc.)

  By the way, the above-described common mode choke coil is required to have better normal mode characteristics. In addition, the common mode choke coil is also required to reduce the space. Here, it can be said that the lower the impedance in the frequency band used, the better the normal mode characteristics. However, in the common mode choke coil of the type disclosed in Patent Document 1, it is very difficult to further reduce the impedance.

  In addition, when using a relatively thick conductor in order to reduce the DC resistance, the space of the tying portion that joins the conductor and the terminal becomes large, which makes it difficult to save the space of the common mode choke coil. There is a bug.

  The present invention has been made on the basis of the above circumstances, and an object of the present invention is to provide a coil component capable of improving the normal mode characteristics and realizing space saving. It is.

  In order to solve the above-mentioned problem, the present invention includes a first base part and a second base part, and a column base part that connects the first base part and the second base part, A drum core having a winding frame portion surrounded by the first flange portion, the second flange portion, and the column base portion, and a first conductor disposed on the winding frame portion while being formed by winding the first conductive wire. The coil is configured by winding the second conductive wire, and includes a second coil disposed in the winding frame portion and an insertion hole through which the drum core is inserted, and the first hook portion or the second hook portion is provided. At least two notch portions are provided on the facing surface facing either, and the ring core is disposed so as to surround the first coil and the second coil, and is fixed to both ends of the notch portion of the ring core. And the end to which the terminal of the first coil or the second coil is connected A terminal of the first coil and a terminal of the second coil are respectively drawn out from the notch, and the terminal of the first coil is electrically connected to the terminal member located on one end side of the notch. In addition to being connected, the terminal of the second coil is electrically connected to a terminal member located on the other end side of the notch.

  When comprised in this way, the terminal of a 1st coil and the terminal of a 2nd coil are pulled out from the same notch part. Therefore, the first coil and the second coil are in a state where the winding start side terminal exists in the same notch, and the winding end side terminal exists in the same notch. Thereby, the first coil and the second coil can realize the same number of turns. In addition, the first coil and the second coil can have the winding start / end positions in the circumferential direction substantially equal. As a result, when a normal signal is input to the first coil and the second coil, it is possible to cancel the magnetic flux between the first coil and the second coil and suppress an increase in impedance. It becomes. That is, the impedance can be reduced as compared with the conventional coil component.

  Further, in addition to the above-described invention, the other invention further includes at least four peripheral wall portions, and a recess portion provided at a portion where the adjacent peripheral wall portions intersect with each other and are recessed from the peripheral wall portion. The terminal member is provided with a binding portion for binding the terminal, and the terminal member is recessed in a state of being fitted in a rectangular shape in plan view connecting the four peripheral wall portions. And the binding part extends in a direction away from the notch part.

  As described above, the terminal member is disposed in the hollow portion, and the terminal member is disposed in a state of being accommodated in a rectangular shape in a plan view connecting the four peripheral wall portions. Therefore, it is possible to prevent the terminal member from protruding outward, and to save space for the coil component. Moreover, since the binding part is provided in the terminal member, it is possible to satisfactorily bind the terminal of the first coil or the second coil.

  Furthermore, in addition to the above-described inventions, in another invention, the terminal member is further provided with a mounting portion for mounting on the mounting substrate, and extending from the tip side of the mounting portion and positioning the terminal member. And a positioning surface on the ring core that is opposite to the opposing surface and to which the mounting portion is attached, and that is recessed from the mounting surface toward the opposing surface. And a positioning recess for positioning the terminal member.

  Thus, since the terminal member is provided with the mounting portion, the terminal member can be favorably mounted on the mounting substrate. Further, since the terminal member is provided with the positioning portion, it is possible to mount and fix the terminal member in a state in which the terminal member is favorably positioned with respect to the ring core. Thereby, it becomes possible to improve the adhesive strength of the terminal member to the ring core, and it is possible to improve the impact resistance of the coil component.

  According to the present invention, it is possible to improve the normal mode characteristics of the coil component. In addition, space saving of coil parts can be realized.

  Hereinafter, a coil component 10 according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing a configuration of a coil component 10 of the present invention. FIG. 2 is a plan view showing the configuration of the coil component 10, and FIG. 3 is a bottom view showing the configuration of the coil component 10. FIG. 4 is a half sectional view showing the configuration of the coil component 10.

  In the following embodiments, the vertical direction refers to the X direction in FIG. And in this X direction, seeing from the upper collar part 21, the side in which the lower collar part 22 exists is made into the lower side, and the other side is made into the upper side.

  As shown in FIG. 1, the coil component 10 includes a drum core 20, a coil 30, a ring core 40, and a terminal member 50. Among these, the drum core 20 includes a disk-shaped upper collar part 21, a disk-shaped lower collar part 22, and a columnar column base part 23. Among these, the upper collar part 21 corresponds to the first collar part and is provided with a larger diameter than the lower collar part 22. Moreover, the lower collar part 22 respond | corresponds to a 2nd collar part.

  In the present embodiment, the diameter of the upper collar portion 21 is substantially the same as or slightly smaller than the length dimension of the ring core 40 along the Y direction and the Z direction (see FIG. 2 and the like). Further, the lower collar portion 22 is provided so as to be inserted into the insertion hole 41 of the ring core 40. Therefore, the diameter of the lower collar portion 22 is provided to be slightly smaller than the diameter of the insertion hole 41. In addition, a slight gap exists between the lower collar portion 22 and the insertion hole 41 (see FIG. 3 and the like). However, a configuration without such a gap may be employed.

  Moreover, the column base part 23 is a part by which the coil 30 is arrange | positioned in this outer periphery. The diameter of the column base portion 23 is set according to the inductance value set in the coil component 10, but is designed to such an extent that the coil 30 can be installed on the outer periphery and there is no problem in strength. In the following description, a portion surrounded by the upper collar portion 21, the lower collar portion 22, and the column base portion 23 and where the coil 30 is disposed is referred to as a winding frame portion 24.

  The drum core 20 is made of, for example, ferrite. However, the material of the drum core 20 is not limited to ferrite, and various magnetic materials such as permalloy and sendust can be used.

  A coil 30 is disposed on the outer periphery of the drum core 20. In the present embodiment, two coils 30 are provided. Of these two coils 30, the first coil 30 </ b> A has a terminal 32 </ b> A <b> 1 on one end side positioned in a first opening 45 </ b> A to be described later, and a terminal 32 </ b> A <b> 2 on the other end side in a second opening 45 </ b> B described later. To position. Here, in the present embodiment, the terminal 32A1 on one end side of the first coil 30A and the terminal 32A2 on the other end side of the first coil 30A are both positioned on the left side in FIG. . Similarly, the terminal 32B1 on one end side of the second coil 30B is positioned in a first opening 45A described later, and the terminal 32B2 on the other end side of the second coil 30B is set in a second opening described later. 45B. In the present embodiment, the terminal 32B1 on the one end side of the second coil 30B and the terminal 32B2 on the other end side of the second coil 30B are both positioned on the right side in FIG.

  In the following description, when referring to both the terminals 32A1 and 32A2, the terminal 32A is referred to, and when referring to both the terminals 32B1 and 32B2, the terminal 32B is referred to.

  Here, when forming the first coil 30A and the second coil 30B, the first conductor 31A constituting the first coil 30A and the second conductor 31B constituting the second coil 30B are: Winding in the same direction at the same time in a state adjacent to each other (close state). Thereby, the first coil 30A and the second coil 30B have substantially the same number of turns. However, the winding method of the first conducting wire 31A and the second conducting wire 31B is not limited to this, and the winding directions of the first conducting wire 31A and the second conducting wire 31B are opposite to each other. It is possible to adopt various methods such as winding around.

  The first conductive wire 31 </ b> A and the second conductive wire 31 </ b> B are covered with an insulating coating such as an enameled wire, and the insulating coating is peeled off at a portion connected to the mounting portion 53.

  As shown in FIGS. 5 and 6, the ring core 40 has an insertion hole 41 in the center of the planar shape, and the planar shape is formed by cutting (cutting off) four rectangular corners into a predetermined shape. It is provided in the state. In the following description, the notched portions (cut-off portions) at the four corners are defined as the recessed portions 42.

  The ring core 40 is made of ferrite, for example, like the drum core 20. However, the material of the ring core 40 is not limited to ferrite, and various magnetic materials such as permalloy and sendust can be used.

  The ring core 40 is provided with a pair of convex peripheral wall portions 43 in a state along the Y direction in FIGS. The convex peripheral wall portion 43 is provided so that the outer wall surface 43a is substantially planar. Further, the ring core 40 is provided with a pair of concave peripheral wall portions 44 along the Z direction in FIGS. The concave peripheral wall portion 44 is also provided so that its outer wall surface 44a is substantially planar.

  Here, the upper surface 43 b of the convex peripheral wall portion 43 is provided higher than the upper surface 44 b of the concave peripheral wall portion 44. And the lower surface 21a (refer FIG. 4) of the upper collar part 21 contacts the upper surface 43b of this convex surrounding wall part 43 via an adhesive agent. Further, a concave portion is provided by the upper surface 44 b of the concave peripheral wall portion 44 and the side surface 43 c of the convex peripheral wall portion 43. The concave portion corresponds to the notch and is provided in an open state even when the lower surface 21a of the upper collar portion 21 is in contact with the upper surface 43b. Therefore, in the following description, this concave portion is referred to as an opening 45. In FIG. 7, the opening 45 on the side where the terminals 32A1 and 32B1 are located is the opening 45A, and the terminals 32A2 and 32B2 are located. The side opening 45 is referred to as an opening 45B.

  Further, as shown in FIG. 5, the length dimension L1 in the Y direction of the convex peripheral wall portion 43 is provided smaller than the length dimension L0 in the Y direction of the ring core 40. Here, the terminal member 50 is arrange | positioned at the both ends in the Y direction of the convex-shaped surrounding wall part 43, respectively. A portion of the terminal member 50 is disposed in surface contact with the end surface 43 d of the convex peripheral wall portion 43. Here, even if a part of the terminal member 50 is arranged in a state of being in surface contact with the end surface 43d, the terminal member 50 is provided in a state in which it does not protrude from the outer wall surface 44a of the concave peripheral wall portion 44 in the Y direction. It has been. In the present embodiment, the end face 43d makes approximately 90 degrees with respect to the outer wall face 44a. In addition, the end face 43d is not continuous with the outer wall surface 43a, and the inclined surface 43e that forms an angle of approximately 45 degrees with respect to both of the end face 43d and the outer wall surface 43a in a plan view. Is provided. The inclined surface 43e is provided in a state having a predetermined gap without making surface contact with the terminal member 50. In addition, you may employ | adopt the structure which abbreviate | omits this slope 43e.

  Further, the width dimension of the upper surface 43 b at both ends of the convex peripheral wall 43 is slightly larger than the width dimension of the terminal member 50 in the Z direction. Thereby, even if the terminal member 50 is arrange | positioned at the both ends of the convex surrounding wall part 43, the said terminal member 50 is provided so that it may not protrude in a Z direction. In addition, the length dimension along the Y direction of the outer wall surface 43a and the upper surface 43b of the convex peripheral wall part 43 is provided longer than the length dimension along the Z direction of the outer wall surface 44a and the upper surface 44b of the concave peripheral wall part 44. .

  Further, the lower surface 43f (corresponding to the mounting surface; see FIG. 4) of the convex peripheral wall portion 43 is provided so as to be flush with the lower surface 44c of the concave peripheral wall portion 44. However, a positioning recess 46 is provided on the lower surface 43 f side of the convex peripheral wall 43. The positioning recess 46 is provided at a substantially central portion in the Y direction. A positioning portion 54 of the terminal member 50 described later is positioned in the positioning recess 46. In addition, the depth dimension of the positioning recessed part 46 should just be a grade which can position the terminal member 50 favorably. In addition, a taper surface 46 a is provided in the positioning recess 46 from the end in the Y direction toward the center, and corresponds to the bent shape of the terminal member 50.

  Moreover, the side edge of the terminal member 50 is provided in the side surface 44d (refer FIG. 5) along the Y direction of the concave surrounding wall part 44 so that latching is possible. From the upper surface 44b of the concave peripheral wall portion 44, the terminals 32A and 32B of the first coil 30A or the second coil 30B are drawn out. Therefore, the height dimension of the upper surface 44b of the concave peripheral wall portion 44 is provided lower than the height dimension of the upper surface 43b of the convex peripheral wall portion 43 than the diameter of the first conductive wire 31A or the second conductive wire 31B. Yes.

  In the circumferential direction of the ring core 40, the upper surface 44b (opening 45) is provided to cover an angle range smaller than 90 degrees.

  Further, as shown in FIG. 6 and the like, the terminal member 50 includes an end face attaching portion 51, a binding portion 52, a mounting portion 53, and a positioning portion 54. Among these, a part of the end surface attaching portion 51 is a portion attached in a state of surface contact with the end surface 43d. Therefore, in the state where the terminal member 50 is attached, the end face attaching portion 51 is arranged in a state of extending in the vertical direction. In addition, the side edge of the end surface attaching part 51 is provided in the state latched by the side surface 44d of the concave surrounding wall part 44. As shown in FIG.

  In addition, the terminal member 50 is provided with a binding portion 52 that is flush with the end surface mounting portion 51. In a state where the terminal member 50 is attached to the ring core 40, the binding portion 52 extends from the side edge opposite to the side edge that is engaged with the side surface 44d in the end face attachment portion 51 along the Z direction. Is provided. It should be noted that the ends 32A and 32b of the first coil 30A or the second coil 30B are entangled with the binding portion 52, and the terminal member 50 and the first coil 30A or the like by soldering or the like after the entanglement. The second coil 30B is electrically connected. Therefore, the protruding length of the binding portion 52 is set to a length dimension that does not protrude from the outer wall surface 43a and that allows the terminals 32A and 32B to be satisfactorily connected.

  In addition, in the state in which the terminal member 50 is attached to the hollow portion 42, the terminal member 50 is in a state of being accommodated within a rectangular range in plan view constituted by the outer wall surface 43a and the outer wall surface 44a.

  The terminal member 50 is provided with a mounting portion 53 in a state of being bent with respect to the end surface attaching portion 51. The upper surface of the mounting portion 53 is a portion that is in surface contact with the lower surface 43f of the convex peripheral wall portion 43 through an adhesive, for example. Further, the lower surface of the mounting portion 53 is bonded to a mounting portion of a mounting board (not shown) via, for example, solder. The mounting portion 53 is bent in a state of making approximately 90 degrees with respect to the end face mounting portion 51. Further, as shown in FIG. 3 and the like, the lower surface 43f side of the convex peripheral wall 43 is provided so that the width of the convex peripheral wall 43 becomes smaller toward the center in the Y direction due to the presence of the insertion hole 41. ing. Since the mounting portion 53 does not protrude toward the insertion hole 41 in correspondence with the width dimension, the width size of the mounting portion 53 and the positioning portion 54 is approximately the same as the width size of the convex peripheral wall portion 43 or slightly. It is provided to be smaller.

  As shown in FIGS. 1, 6, and the like, a positioning portion 54 extends from the front end side of the mounting portion 53 that is separated from the end surface attaching portion 51. The positioning portion 54 is a portion that enters the positioning recess 46. Therefore, the positioning portion 54 is provided so as to have an inclination angle similar to that of the tapered surface 46 a with respect to the mounting portion 53. Moreover, the length dimension along the Y direction of the positioning part 54 is provided shorter than the taper surface 46a.

  The characteristics of the coil component 10 having the above configuration will be described with reference to FIG. FIG. 9 shows the impedance-frequency characteristics of the coil component 10. In FIG. 9, the solid line indicates the characteristics of the coil component 10 in the present embodiment, and the broken line indicates the characteristics of the coil component 11 as shown in Patent Document 1.

  As is apparent from FIG. 9, the coil component 10 in the present embodiment has a lower impedance than the conventional coil component 11. For this reason, even if a normal mode signal is input to the coil component 10, it can be transmitted satisfactorily without much attenuation. On the other hand, since the conventional coil component 11 has a higher impedance than the coil component 10 in the present embodiment, when a normal mode signal is input, the signal attenuation is increased.

  For this reason, the coil component 10 in the present embodiment can exhibit better characteristics as a common mode choke coil than the conventional coil component 11.

  In addition, the difference of the winding position between coil 30A, 30B is assumed as a cause with which the coil component 10 in this Embodiment has a characteristic more favorable than the conventional coil component 11. FIG. Specifically, in the coil component 10 of the present embodiment, there is almost no difference in the winding position between the first coil 30A and the second coil 30B. That is, in the coil component 10 according to the present embodiment, the terminal 32A1 of the first coil 30A and the terminal 32B1 of the second coil 30B are both located in the opening 45A (both are drawn from the opening 45A). (See FIG. 7). Further, the terminal 32A2 of the first coil 30A and the terminal 32B2 of the second coil 30B are both located in the opening 45B (both are pulled out from the opening 45B).

  For this reason, the first coil 30A and the second coil 30B can realize the same number of turns. In addition, the first coil 30 </ b> A and the second coil 30 </ b> B can have substantially the same winding start / end positions in the circumferential direction. Thereby, when a normal signal is input to the first coil 30A and the second coil 30B, the magnetic flux is canceled between the first coil 30A and the second coil 30B, and a normal mode signal is satisfactorily transmitted. It can be transmitted. Further, the magnetic flux is canceled between the two coils, so that the impedance to the normal mode signal can be reduced.

  In particular, in the coil component 10 in the present embodiment, the impedance is greatly reduced with respect to a normal mode signal having a frequency in the vicinity of 10 MHz to 100 MHz, and the normal mode characteristics are good.

  On the other hand, in the coil component 11 (see FIG. 8) as shown in Patent Document 1, grooves 401 are provided at the four corners of the ring core 400. For this reason, in the coil component 11, the winding start position / end position in the circumferential direction is shifted by approximately 90 degrees between the two coils. For this reason, when the normal mode signal is input, the magnetic flux between the first coil and the second coil is completely at the portion of the deviation of about 90 degrees on the winding start position / end position side. Is not canceled out, and there is a possibility that the impedance remains by an amount corresponding to a position shift of about 90 degrees. That is, the two coils are arranged in a slightly shifted state, and the amount of the shift is not related to the magnetic coupling, and therefore may be related as an impedance to the normal mode signal.

  According to the coil component 10 having the above configuration, the normal mode characteristics can be improved as shown in FIG. 9 described above. That is, in the coil component 10, it is possible to reduce the impedance with respect to the normal mode signal.

  In addition, in the coil component 10 according to the present embodiment, the terminal member 50 is attached to the recessed portion 42, but this terminal member 50 fits inside the rectangular shape in plan view connecting the four peripheral wall portions 43 and 44. Arranged in a state. Therefore, it is possible to prevent the terminal member 50 from protruding outward, and to save space for the coil component 10.

  Further, since the binding member 52 is provided in the terminal member 50, the terminals 32A and 32B of the first coil 30A or the second coil 30B can be satisfactorily bound. Moreover, since the binding part 52 is extended | stretched toward the direction away from the opening part 45, it can prevent favorably that the 1st conducting wire 31A and the 2nd conducting wire 31B short-circuit. .

  Furthermore, since the terminal member 50 is provided with the positioning portion 54, the terminal member 50 can be attached and fixed in a state in which the terminal member 50 is favorably positioned with respect to the ring core 40. Thereby, the adhesive strength of the terminal member 50 with respect to the ring core 40 can be improved, and the impact resistance of the coil component 10 can be improved.

  Further, in the coil component 10 described above, the recess 42 is provided in a state where the four corners of the ring core 40 are cut out (cut off). Here, the four corners of the ring core 40 are portions that are farthest from the center of the ring core 40. For this reason, even if the core volume is reduced by the above cutout, the magnetic characteristics are not affected. Therefore, the coil component 10 can realize space saving while preventing adverse effects on the common mode characteristics.

  The coil component 10 according to the embodiment of the present invention has been described above, but the present invention can be variously modified in addition to this. This will be described below.

  In the above-described embodiment, the case where two coils are used has been described. However, the number of coils is not limited to two, and a configuration using three or more coils may be adopted. In the above-described embodiment, the first collar is the upper collar 21 and the second collar is the lower collar 22. However, the first collar is the lower collar 22 and the second collar. You may comprise a part as the upper collar part 21. FIG.

  In the above-described embodiment, a configuration in which the recessed portions 42 exist at the four corners of the ring core 40 is employed. However, when the space saving of the ring core is not so important, it is not necessary to adopt a configuration in which a hollow portion exists.

  In the above-described embodiment, the ring core 40 has a shape in which the four corners of the rectangular core member in plan view are cut out (cut off). However, the ring core is not limited to this, and various polygonal shapes such as a hexagonal shape in plan view and an octagonal shape can be used in addition to the rectangular shape in plan view. Moreover, you may use a circular ring-shaped thing as a ring core.

  In the above-described embodiment, the terminal member 50 is provided with the binding portion 52. However, the terminals 32A and 32B may be electrically joined to the terminal member by means of, for example, soldering, laser welding, or the like, without adopting the configuration in which the binding member 52 is provided in the terminal member 50. . In the above-described embodiment, the terminal member is provided with the positioning portion 54. However, a configuration in which such a positioning portion does not exist may be adopted as the terminal member. In addition, when employ | adopting the structure which does not have a positioning part in a terminal member, you may employ | adopt the structure in which the positioning recessed part 46 does not exist in the ring core 40. FIG.

  In the above-described embodiment, the opening 45 has a concave shape that is recessed by a predetermined depth from the upper surface 44b. However, the opening is not limited to this, and it is possible to adopt various shapes such as a hole shape and a groove shape penetrating the ring core 40 and punching the insertion hole 41 and the outside.

  Furthermore, in the above-described embodiment, the drum core 20 has the upper flange portion 21, the lower flange portion 22, and the column base portion 23 provided integrally, but adopts a configuration in which these are provided separately. You may do it.

  The coil component of the present invention can be used in the field of electrical equipment.

It is a perspective view which shows the structure of the coil component which concerns on one embodiment of this invention. It is a top view which shows the structure of the coil components of FIG. It is a bottom view which shows the structure of the coil components of FIG. It is a figure which shows a side surface shape and a cross-sectional shape among the coil components of FIG. It is a top view which shows the state which removed the drum core from the coil components of FIG. It is a perspective view which shows the state which removed the drum core from the coil components of FIG. It is a top view which shows the state which pulled out the terminal of the coil from the coil components of FIG. 1, and removed the drum core. It is a top view which shows the image of the coil components provided with four groove parts in the conventional four corners. It is a figure which shows the normal mode characteristic of the coil components of FIG. 1 and the coil components of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Coil components 20 ... Drum core 30, 30A, 30B ... Coil 30A ... 1st coil 30B ... 2nd coil 31A ... 1st conducting wire 31B ... 2nd conducting wire 32A1, 32A2, 32B1, 32B2 ... Terminal 40 ... Ring core DESCRIPTION OF SYMBOLS 41 ... Insertion hole 42 ... Depression part 43 ... Convex surrounding wall part 44 ... Concave surrounding wall part 45 ... Opening part 46 ... Positioning recessed part 50 ... Terminal member 51 ... End surface attaching part 52 ... Tying part 53 ... Mounting part 54 ... Positioning part

Claims (3)

The first and second collars include a first collar part and a second collar part, and a column base part that connects the first collar part and the second collar part, and the first collar part and the second collar part. And a drum core having a winding frame part surrounded by the column base part,
A first coil arranged by winding the first conductive wire and disposed in the winding frame portion;
A second coil arranged by winding the second conductive wire and disposed in the winding frame portion;
An insertion hole for inserting the drum core is provided, and at least two notch portions are provided on a facing surface facing either the first flange portion or the second flange portion, and the first coil and the above-described A ring core arranged to surround the second coil;
Of the ring core, fixed to both ends of the notch, and a terminal member to which the terminal of the first coil or the second coil is connected,
Comprising
The terminal of the first coil and the terminal of the second coil are respectively drawn out from the notch, and the terminal of the first coil is electrically connected to a terminal member located on one end side of the notch. And the terminal of the second coil is electrically connected to a terminal member located on the other end side of the notch,
Coil parts characterized by that. The ring core is provided with at least four peripheral wall portions, and a recess portion that is recessed from the peripheral wall portion and provided at a site where the adjacent peripheral wall portions intersect,
The terminal member is provided with a binding portion for binding the terminal,
The terminal member is attached to the hollow portion in a state of being accommodated in a rectangular shape in plan view connecting the four peripheral wall portions, and the binding portion extends in a direction away from the notch portion.
The coil component according to claim 1. The terminal member is provided with a mounting portion for mounting on the mounting substrate, and a positioning portion for extending the mounting portion and positioning the terminal member,
The ring core is a surface opposite to the facing surface and a mounting surface to which the mounting portion is attached, and is recessed from the mounting surface toward the facing surface and the positioning portion enters and the terminal member Positioning recesses for positioning are provided,
The coil component according to claim 1, wherein the coil component is a coil component.

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