JP2005310947A - Coil component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coil component which prevents a lead-out of lead wire from abutting with a plate-like core. <P>SOLUTION: The coil component is provided with a drum type core and a plate-like core 3. A drum type core is provided with a wind core which connects a pair of flanges and a pair of flanges. Two electrodes are provided in the flanges, respectively. At one side wall where electrodes are provided in a U-shape, one end or the other end of the lead wire wound around the wind core is fixed and joined. The part of a lead taken out from the side wall forms a lead-out. At the position between two electrodes of a pair of flanges, the electrode absence part is provided for separating lead wires respectively by a predetermined gap, so that the position of a projection part 3A corresponding to one end and the other end of the plate-like core 3 may be fixed respectively to the absence part. At the position of the projection 3A opposite to the lead-out, recesses 3a, 3b are formed and estranged from the lead-outs for making a noninterference. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a coil component, and more particularly to a coil component constituting a common mode filter for a small high frequency.

  Conventionally, as a coil component such as a common mode filter, a configuration in which a plate core is fixed to a drum type core around which a conducting wire is wound is known.

  Japanese Patent Application Laid-Open No. 2001-93756 discloses a coil component having this configuration. As shown in FIG. 5, the coil component includes a drum type core 101 (FIG. 5B), a plate-like core 103 (FIG. 5A), three conductors 121, 122, and 123 (FIG. 6). Is provided. The drum type core 101 includes a pair of flange portions 111 and 112 and a core portion 113, and the core portion 113 connects the pair of flange portions 111 and 112 to each other. The conducting wires 121, 122, 123 are wound around the core 113 of the drum type core 101, respectively. The plate-shaped core 103 is fixed to the pair of flange portions 111 and 112 of the drum type core 101 at both ends in the longitudinal direction.

The pair of flange portions 111 and 112 are provided with three electrodes 114, 115, and 116, and electrodes 117, 118, and 119 corresponding to the number of the conductive wires 121, 122, and 123, respectively. One end of three conducting wires 121, 122, 123 is fixed to each electrode 114, 115, 116 of one flange portion 111, and three conducting wires are attached to each electrode 117, 118, 119 of the other flange portion 112. The other ends of 121, 122, and 123 are fixed, and a part of each electrode 114 to 119 forms a connecting portion 114A to 119A to which one end or the other end of each of the conductive wires 121, 122, and 123 is fixed. The conducting wires 121, 122, 123 are drawn out portions 121A, 121B and the like (FIG. 6) drawn from the connecting portions 114A to 119A toward the core portion 113, and a winding portion 121C wound around the core portion 113. Etc. The conducting wires 121, 122, 123 are wound around the core 113 of the drum type core 101 using a winding device (not shown). As shown in FIG. 6, the plate core 103 is fixed to the drum type core 101 so as to cover the connecting portions 114 </ b> A to 119 </ b> A.
JP 2001-93756 A (pages 2 to 3, FIGS. 1 to 3)

  However, when manufacturing a conventional coil component, as shown in FIG. 6, the lead wires 121, 122, 123 are arranged in a direction in which the lead-out portions 121 </ b> A, 121 </ b> B and the like are directed from the connecting portions 114 </ b> A to 119 </ b> A Although it is drawn out by the winding device and wound around the core part 113, the lead parts 121A, 121B and the like are actually drawn out in the direction from the connecting parts 114A to 119A to the core part 113 in this way. Among the coil parts that are mass-produced, the lead portions 121A, 121B, etc. of the conducting wires 121, 122, 123 after being wound by a winding device (not shown) are drum type. Some of the cores 101 are curved toward the outside of the core 101, that is, toward the plate-like core 103.

  If it is curved so much, the lead portions 121A, 121B, etc. of the conducting wires 121, 122, 123 come into contact with the plate-shaped core 103, and both end portions in the longitudinal direction of the plate-shaped core 103 are connected to the drum-type core 101. It becomes impossible to make it contact | abut to both of a pair of flange parts 111 and 112, respectively. For this reason, the plate-shaped core 103 cannot be reliably fixed to the drum type core 101, and there has been a problem that the plate-shaped core 103 is lifted from the drum type core 101.

  In addition, when the lead portions 121A, 121B, etc. of the conducting wires 121, 122, 123 are in contact with the plate-like core 103 in this way, the conductors 121, 122, 123 are covered at the positions of the lead portions 121A, 121B, etc. due to vibration or the like. Peeled off, causing a short circuit and the like, resulting in a problem of reducing the durability of the product.

  Then, an object of this invention is to provide the coil components which prevent the drawer | drawing-out part of conducting wire contact | abuts to a plate-shaped core.

  In order to achieve the above object, the present invention provides a drum type core comprising a pair of flange portions and a winding core portion that connects the pair of flange portions to each other, and has a substantially plate shape with both ends in the longitudinal direction. A plate-like core fixed to each of the pair of flange portions of the drum type core, and at least one conductor having a winding portion wound around the core portion of the drum type core, A number of electrodes corresponding to the number of the conductive wires are provided on the flange portion, and each of the electrodes forms a connection portion to which one end or the other end of the conductive wire is fixed, and the conductive wire extends from the connection portion to the winding. The plate-like core that has a lead-out portion that is drawn out toward the core portion, and the plate-like core is fixed to the drum-type core so as to cover the connecting portion, and at least the plate-like portion facing the lead-out portion The core part has a non-interference part that is separated from the drawer part. It provides a coil component you are.

  Here, the plate-shaped core is provided with a convex portion at a position facing at least the pair of flange portions of the drum-type core when fixed to the drum-type core, and a protruding end of the convex portion is provided. At least a part is fixed to a position where the electrodes of the pair of flange portions of the drum-type core are not provided, and the non-interference portion is formed by a concave portion formed on the convex portion facing the lead-out portion of the conducting wire. It is preferable.

  Moreover, it is preferable that this recessed part is continuously formed over the position facing this drawer | drawing-out part, and the position facing this coil | winding part.

  Alternatively, the plate-like core is provided with a convex portion only at a position facing the pair of flange portions of the drum type core when fixed to the drum type core, and the non-interference portion is formed of the drum type core. The plate-like core surface facing the core is preferably formed of a portion where the convex portion is not provided.

  The plate-like core has a substantially rectangular shape, and a pair of edge portions along the longitudinal direction of the plate-like core has edge protrusions that protrude in the same direction as the protrusion direction of the protrusions. It is preferable that each is provided along the edge.

  Moreover, it is preferable that this non-interference part consists of a recessed part formed in the surface of this plate-shaped core facing this drum type core.

  According to the coil component of the first or second aspect of the present invention, at least the portion of the plate-like core that faces the lead-out portion has the non-interference portion that is separated from the lead-out portion. Even when it is greatly curved toward the plate-like core, it is possible to prevent the lead-out portion of the conducting wire from coming into contact with the plate-like core. For this reason, it can prevent that a plate-shaped core floats from a drum type core, and can prevent that the coating | cover of a conducting wire rubs and peels with a plate-shaped core.

  According to the coil component of the third aspect of the present invention, since the concave portion is continuously formed over the position facing the lead portion of the conductive wire and the position facing the winding portion, the concave portion is formed at the protruding end of the convex portion. The applied state of the applied resin for fixing the plate-like core to the drum-type core is stably maintained in a uniform state at the protruding end of the convex portion, and it is possible to suppress variations in fixing strength between products. it can.

  According to the coil component of claim 4 of the present invention, the plate-like core is provided with the convex portions only at positions facing the pair of flange portions of the drum type core when fixed to the drum type core, Since the non-interference part consists of a part where the convex part of the surface of the plate-shaped core facing the drum type core is not provided, the resin applied to the protruding end of the convex part to fix the plate-shaped core to the drum type core The applied state is stably maintained in a uniform state at the projecting end of the convex portion, and variation in fixing strength among products can be suppressed.

  According to the coil component of the fifth aspect of the present invention, the plate-like core has a substantially rectangular shape, and the pair of edges along the longitudinal direction of the plate-like core have the same direction as the protruding direction of the convex portion. Since the edge protrusions that protrude toward each other are provided along the edges, when the viscosity of the resin is low, the resin flows from the protruding ends of the protrusions of the plate core, and the edges of the plate core Can be prevented from flowing down.

  According to the coil component of the sixth aspect of the present invention, the non-interference portion is formed of a recess formed on the surface of the plate-shaped core facing the drum type core, so that the lead-out portion of the conducting wire is directed toward the plate-shaped core. Even when it is largely curved, the lead portion is accommodated without contacting the plate coil at the position of the recess, and the lead portion of the conducting wire can be prevented from coming into contact with the plate core.

  A coil component according to a first embodiment of the present invention will be described with reference to FIGS. More specifically, the coil component includes a drum-type core 1 made of ferrite as shown in FIG. 1 and two conductors 21 wound around the drum-type core 1 that are formed of a wire covered with an insulating material. 22 and a common mode filter for high frequency used for a small electronic device, including a plate-like core 3 made of ferrite as shown in FIG.

  As shown in FIG. 1, the drum type core 1 includes a pair of flange portions 11 and 12 and a core portion 13, and the core portion 13 connects the pair of flange portions 11 and 12 to each other. The pair of flange portions 11 and 12 have substantially the same substantially rectangular parallelepiped shape, and one flange portion 11 has one of the widest pair of surfaces 11A among the six surfaces defining the substantially rectangular parallelepiped shape. The substantially center position is connected to one end of the core part 13.

  Similarly, the substantially center position of the other 12A of the widest pair of surfaces among the six surfaces defining the substantially rectangular parallelepiped shape of the other flange portion 12 is connected to the other end of the core portion 13. Yes. The surfaces 11A and 12A defining the pair of flange portions 11 and 12 respectively connected to one end and the other end of the core portion 13 are symmetrical relative to each other, and are substantially rectangular surfaces. The four corners of 11A and 12A are in a positional relationship facing each other in the axial direction of the core portion 13 which is a direction connecting the pair of flange portions 11 and 12. Further, the surfaces 11A and 12A are in a positional relationship parallel to each other.

  The pair of flange portions 11 and 12 are provided with electrodes 14 and 15 and electrodes 16 and 17, respectively. The electrodes 14 to 17 are provided in two pairs corresponding to the number of the two conducting wires 21 and 22 in each of the pair of flange portions 11 and 12. The electrodes 14 to 17 each have a pair of side walls 14A to 17A, 15B, 16B, and 17B and a bottom surface 15C, 16C, and 17C, and a pair of side surfaces 11B, 12B, and 11C of the flange portions 11 and 12, respectively. , 12C and the bottom surfaces 11D and 12D are provided by metal plating.

  More specifically, one side wall 14A, 15A of the electrodes 14, 15 that define a substantially U-shape is fixed on the side surface 11B of the flange portion 11, and the other side wall (not shown) of the electrode 14 is It is fixed on the side surface 11C of the flange portion 11. Similarly, the other side wall 15 </ b> B of the electrode 15 is fixed on the side surface 11 </ b> C of the flange portion 11. One side wall 16A, 17A of the electrodes 16, 17 is fixed on the side surface 12B of the flange portion 12, and the other side wall 16B, 17B of the electrode 16, 17 is fixed on the side surface 12C of the flange portion 12.

  A bottom surface (not shown) of the electrode 14 that defines a substantially U-shape is fixed on the bottom surface 11D of the flange portion 11. Similarly, the bottom surface 15 </ b> C of the electrode 15 that defines a substantially U shape is fixed on the bottom surface 11 </ b> D of the flange portion 11. The bottom surfaces 16C and 17C of the electrodes 16 and 17 are fixed on the bottom surface 12D of the flange portion 12. The side walls 14A, 15A, 16A, and 17A that define the substantially U-shape of the electrodes 14 to 17 are located on substantially the same plane, and the side walls 15B, 16B, and 17B are located on substantially the same plane.

  The core part 13 has a substantially square prismatic cross section cut in the longitudinal direction, that is, a cross section perpendicular to the axial direction. As described above, one end and the other end of the core part 13 have a pair of flange parts 11. , 12 are connected. One end of each of the two conductive wires 21 and 22 is fixedly connected to the side walls 14A and 15A of the electrodes 14 and 15 of the one flange portion 11, and a winding device (not shown) is used to form a drum type core. 1 is wound around one core portion 13. The two conducting wires 21 and 22 are so-called bifilar wound so that they are alternately wound around the core portion 13 of the drum type core 1 without a gap, and the side walls 16A of the electrodes 16 and 17 of the other flange portion 12 are wound. The other ends are fixed to 17A and connected. The side walls 14A to 17A of the electrodes 14 to 17 form a connecting portion to which one end or the other end of the conducting wires 21 and 22 is fixed.

  The connection to the electrodes 14 to 17 at one end or the other end of the conductive wires 21 and 22 is performed using a conductive solid agent such as solder or a conductive adhesive, or by spot welding or thermocompression bonding. When thermocompression bonding is performed with a heater chip, tin (Sn) is formed on the surfaces of the side walls 14A to 17A of the electrodes 14 to 17 so that one end or the other end of the conductive wires 21 and 22 can be thermocompression bonded to the electrodes 14 to 17. A plating layer or a solder plating layer is provided relatively thick. A portion of the conductive wires 21 and 22 that is connected to the winding portion 13 from the side walls 14A to 17A of the electrodes 14 to 17 that form the connecting portion constitutes a drawing portion 21A, 21B, 22A, and 22B. The portion wound around the core portion 13 of the type core 1 forms winding portions 21C and 22C.

  A portion between the side wall 14A and the side wall 15A forming the connecting portion of the two electrodes 14 and 15 provided on the flange portion 11, and a connecting portion of the two electrodes 16 and 17 provided on the flange portion 12 are formed. Portions between the side wall 16A and the side wall 17A are electrode non-existing portions 11E and 12E where no electrode is provided.

  The other side walls 15B, 16B, 17B, etc. facing one side wall 14A, 15A, 16A, 17A forming the connecting portion of the electrodes 14-17 that define a substantially U-shape are common mode filters that are coil components. A part of the mounting surface is formed to form a so-called user electrode portion, which is fixed on a wiring board (not shown). For example, the soldering onto the wiring substrate (not shown) is performed by printing cream solder on the conductor on the wiring substrate (not shown) on which the conductor (not shown) is printed, and the side walls 15B of the electrodes 14 to 17 of the drum type core 1. , 16B, 17B and the like are placed on the conductor (not shown) and soldered by reflow.

  As shown in FIG. 2, the plate-like core 3 has a substantially rectangular shape with a substantially plate shape, and one end portion and the other end portion thereof in the longitudinal direction are respectively flange portions 11 of the drum type core 1, The twelve electrode non-existing portions 11E and 12E are fixed to the positions. A convex portion 3A is provided at a central position in the width W direction of the plate-like core 3 shown in FIG. The convex portion 3A is provided in a straight line from the short side forming one end of the plate core 3 in the longitudinal direction to the short side forming the other end. Therefore, the plate core 3 is fixed to the drum type core 1. The convex portions 3A of the plate-like core 3 are opposed to the electrode non-existing portions 11E, 12E of the flange portions 11, 12. The plate-like core 3 forms a connecting portion of the flange portions 11 and 12 of the drum type core 1 by fixing the convex portions 3A and 3A to the positions of the electrode non-existing portions 11E and 12E of the flange portions 11 and 12. It is fixed to the drum type core 1 so as to cover the side walls 14A to 17A of the electrodes 14 to 17. The convex portion 3A has a predetermined width in the direction of the width W of the plate-like core 3 shown in FIG. 2, and the protruding end of the convex portion 3A forms a plane.

  Recesses 3a are located at positions that are part of the projections 3A and are opposed to the lead-out portions 21A, 21B, 22A, 22B of the conducting wires 21, 22 when the plate-like core 3 is fixed to the drum type core 1. 3b are formed. The concave portions 3a and 3b are formed in the convex portion 3A over the width W direction of the plate-like core 3, and are formed in two groove shapes that divide the convex portion 3A into three in the longitudinal direction of the plate-like core 3. And a non-interference portion that is separated from the lead portions 21A, 21B, 22A, and 22B of the lead wires 21 and 22 with a predetermined interval.

  The plate core 3 is fixed to the drum type core 1 as follows. First, an adhesive that can be cured by ultraviolet rays and heat is applied onto the convex portion 3A of the plate-shaped core 3, or the flange portions 11 and 12 and the core portion of the drum-type core 1 facing the plate-shaped core 3. 13, that is, the windings facing the plate-like core 3 and the side walls 14 A, 15 A, 16 A, 17 A forming the connecting portions of the electrodes 14 to 17 with the electrode non-existing portions 11 E, 12 E of the flange portions 11, 12 of the drum type core 1. Apply on top of the core 13 portion. Application of the adhesive to the convex portion 3A of the plate-like core 3 is performed on one plane from the pair of short sides of the substantially rectangular plate-like core 3 on the plane forming the protruding end of the convex portion 3A. It is performed in a straight line along the longitudinal direction of the plate-like core 3.

  Next, the convex portions 3A and 3A of the plate-shaped core 3 are brought into contact with the electrode non-existing portions 11E and 12E, respectively, and portions other than the convex portions 3A and 3A in one end portion or the other end portion in the longitudinal direction of the plate-shaped core 3 And an adhesive that can be cured by ultraviolet rays and heat, is filled in gaps formed between the flanges 11 and 12 and the side walls 14A to 17A forming the connecting portions of the electrodes 14 to 17 of the flange portions 11 and 12. Next, ultraviolet irradiation is performed to cure and temporarily fix the surface of the adhesive. Then, the plate-like core 3 is fixed to the drum type core 1 by curing the entire adhesive through a heating furnace.

  Since the concave portions 3a and 3b forming the non-interference portion are formed in the plate-like core 3, the lead portions 21A, 21B, 22A and 22B of the conducting wires 21 and 22 are greatly curved toward the plate-like core 3. Even if it becomes, it can prevent that drawer | drawing-out part 21A, 21B, 22A, 22B contact | abuts to the plate-shaped core 3. FIG. For this reason, the plate-shaped core 3 can be reliably fixed to the drum-type core 1, and the plate-shaped core 3 can be prevented from floating from the drum-type core 1.

  Next, a coil component according to a second embodiment of the present invention will be described with reference to FIG. The coil component according to the second embodiment is different from the coil component according to the first embodiment in the shape of the plate core 4 constituting the coil component. The same members as those in the first embodiment will be described using the same reference numerals.

  As shown in FIG. 3, the convex portion 4 </ b> A of the plate-like core 4 is only at a position facing the electrode absent portions 11 </ b> E and 12 </ b> E of the pair of flange portions 11 and 12 when being fixed to the drum type core 1. The convex portion 4 </ b> A is not provided at a position facing the winding core portion 13. Similarly to the first embodiment, when it is considered that one convex portion 4A is provided from one short side to the other short side in the longitudinal direction of the substantially rectangular plate-like core 4, the convex portion The concave portion 4a formed in 4A has a position facing the lead-out portions 21A, 21B, 22A, 22B of the conducting wires 21, 22 when the plate-like core 4 is fixed to the drum type core 1, and the conducting wires 21, 22 It is formed continuously over the positions facing the winding portions 21C and 22C. A portion of the surface of the plate-like core 4 facing the drum type core 1 where the convex portion 4A is not provided corresponds to a non-interference portion.

  With this configuration, the applied state of the resin applied to the flat surface forming the protruding end of the convex portion 4A and fixing the plate-like core 4 to the drum type core 1 is made uniform in the protruding end of the convex portion 4A. It can be maintained stably. For this reason, it is possible to suppress variations in the fixing strength between products. In particular, when the adhesive is applied to the convex portion 4A of the plate-like core 4, it is applied in a straight line from one of the pair of short sides of the plate-like core 4 to the other along the longitudinal direction of the plate-like core 4. In some cases this effect is significant.

  Next, a coil component according to a third embodiment of the present invention will be described with reference to FIG. In the coil component according to the third embodiment, the shape of the convex portion 5A of the plate-like core 5 constituting the coil component is the same as that of the convex portion 4A in the second embodiment. However, as shown in FIG. 4, a pair of edge portions along the longitudinal direction of the plate-like core 5, that is, a position corresponding to the long side of the substantially rectangular plate-like core 5, the edge protrusion portion 5 </ b> B. 5C is provided.

  The edge projecting portions 5B and 5C project in the same direction as the projecting direction of the convex portion 5A, the projecting length is slightly lower than the convex portion 5A, and are formed on the side walls 14A to 17A of the electrodes 14 to 17 forming the connecting portion. It is comprised so that it may not contact | abut. Since the edge protrusions 5B and 5C are provided, when the adhesive applied to the flat surface forming the protruding end of the protrusion 5A flows into the recess 5a forming the non-interference part, the edge protrusions 5B and 5C. As if it functions as a bank, it can be prevented from flowing down from the edge of the plate-like core 5.

  The coil component according to the present invention is not limited to the above-described embodiment, and various modifications and improvements can be made within the scope described in the claims. For example, in the present embodiment, the coil component is a common mode filter, but is not limited thereto, and may be a coil component other than the common mode filter.

  Moreover, although the number of the conducting wires 21 and 22 is two and the convex portions 3A, 4A, and 5A are provided in a straight line in the longitudinal direction of the plate-like cores 3, 4, and 5, the number is not limited thereto. . Therefore, for example, when the number of conducting wires is 3, two electrode non-existing portions in one flange portion are provided, and the convex portions of the plate-like cores facing this are parallel straight lines. Make two rows. Moreover, the shape of the flange part and core part of a drum type core is not restricted to the shape of this Embodiment.

  Moreover, although the non-interference part was comprised by the recessed part 3a, 3b, 4a, 5a formed in convex part 3A, 4A, 5A, it is not limited to this. For example, when the convex part is not provided on the surface of the plate-shaped core facing the drum type core, it may be constituted by a concave part formed on the surface of the plate-shaped core.

  The electrodes 14 to 17 are provided by mounting a substantially U-shaped metal so as to cover the pair of side surfaces 11B, 12B, 11C, and 12C and the bottom surfaces 11D and 12D of the flange portions 11 and 12. However, it is not limited to this. For example, it may be provided by baking metal paste or metal plating. Further, the fixing (mounting) on the substrate of the other side walls 14B, 16B, 17B, etc. with respect to the one side walls 14A-17A forming the connecting portion of the electrodes 14-17 defining the substantially U-shape is as follows. The method is not limited to the method according to the embodiment.

  In addition, the adhesive is applied to the convex portions 3A, 4A, and 5A of the plate-like cores 3, 4, and 5 along the longitudinal direction of the plate-like cores 3, 4, and 5 as a pair. Although it was performed in a straight line from one of the short sides to the other, it may be performed only at the position of the convex part of the plate-like core facing the flange part of the drum type core.

  Further, as shown in FIG. 1, the portion of the side surface 11B between the electrode 14 and the electrode 15 of the flange portion 11 and the portion of the side surface 12B between the electrode 16 and the electrode 17 of the flange portion 12 are respectively Although constituted by a flat surface, it is not limited to a flat surface. Two grooves that are parallel to each other along the direction connecting the pair of flange portions 11 and 12 may be formed in these portions. In this case, the two conductors are arranged in the grooves. A portion between these two grooves protrudes relative to the two grooves to form a separating protrusion that separates the two conductors from each other at a predetermined interval.

  The coil component of the present invention is useful in the field of common mode filters, and is particularly useful in the field of small high frequency common mode filters used for high-speed differential signal interfaces such as DVI and HDMI.

The perspective view which shows the drum type core and conducting wire of the coil components by 1st Embodiment. The perspective view which shows the plate-shaped core of the coil components by 1st Embodiment. The perspective view which shows the plate-shaped core of the coil components by 2nd Embodiment. The perspective view which shows the plate-shaped core of the coil components by 3rd Embodiment. The perspective view which shows the plate-shaped core of the conventional coil components. The perspective view which shows the drum type core of the conventional coil components. The side view which shows the conventional coil components.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drum type core 3, 4, 5 Plate-shaped core 3A Convex part 3a, 3b, 4a, 5a Concave part 11 Flange part 13 Core part 14, 15, 16, 17 Electrode 14A, 15A, 16A, 17A Side wall 21, 22 Conductor 21A, 21B, 22A, 22B Drawer part 21C, 22C Winding part

Claims (6)

A drum type core comprising a pair of flange portions and a core portion connecting the pair of flange portions to each other;
A plate-like core having a substantially plate shape and having both longitudinal ends fixed to the pair of flange portions of the drum-type core;
Comprising at least one conductor having a winding portion wound around the core portion of the drum type core,
The pair of flange portions are provided with a number of electrodes corresponding to the number of the conducting wires, and each of the electrodes forms a connecting portion to which one end or the other end of the conducting wire is fixed, and the conducting wire is the connecting portion. A coil part that has a lead-out part that is drawn out from the core part and is fixed to the drum-type core so as to cover the connecting part,
At least a portion of the plate-like core facing the drawer portion has a non-interference portion that is separated from the drawer portion. The plate-like core is provided with a convex portion at a position facing at least the pair of flange portions of the drum type core when fixed to the drum type core, and at least a part of the protruding end of the convex portion. Is fixed to a position where the electrodes of the pair of flange portions of the drum type core are not provided,
The coil component according to claim 1, wherein the non-interference portion includes a concave portion formed in the convex portion facing the lead-out portion of the conducting wire.   3. The coil component according to claim 2, wherein the recess is formed continuously over a position facing the lead portion and a position facing the winding portion. The plate-like core is provided with a convex portion only at a position facing the pair of flange portions of the drum type core when fixed to the drum type core,
2. The coil component according to claim 1, wherein the non-interfering portion is formed of a portion of the surface of the plate-like core facing the drum type core where the convex portion is not provided.   The plate-like core has a substantially rectangular shape, and a pair of edge portions along the longitudinal direction of the plate-like core has edge protrusions protruding in the same direction as the protrusion direction of the protrusions. The coil component according to claim 2, wherein the coil component is provided along the portion.   2. The coil component according to claim 1, wherein the non-interfering portion is formed of a concave portion formed on the surface of the plate-like core facing the drum type core.

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