JP2010129917A - Coil component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coil component which inhibits the occurrence of looseness between a core and a bobbin. <P>SOLUTION: In a first bobbin 31 to which a first core 41 having a first connection 43 and first and second pipes 31A, 31B which are connected through the first connection 43 is attached, first and second protrusions 34, 35 for springly holding the first and second surfaces 43A, 43B of the first connection 43 are formed on a first flange 31C of the first bobbin 31, which is abutted on the first connection 43. By inserting the first connection 43 between the first and second protrusions 34, 35, the occurrence of looseness between a core 4 including the first core 41 and a bobbin 3 including the first bobbin 31 can be prevented. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a coil component, and in particular, a coil having a core that forms a substantially square-shaped closed magnetic circuit and a bobbin that is provided on each of a pair of opposing sides of a substantially square shape and on which two conductors are wound. Regarding parts.

2. Description of the Related Art Conventionally, as shown in Patent Document 1, for example, a choke coil in which a coil is wound around a bobbin in a state where two U-shaped cores are mounted and abutted on the bobbin is known. In this choke coil, the holding metal clamps the two U-shaped cores in such a direction as to urge each other, thereby suppressing backlash between one U-shaped core and the other U-shaped core. ing.
Japanese Utility Model Publication No. 6-45322

  With the above-described configuration, the play between the two U-shaped cores is suitably suppressed by the holding metal fitting. However, the holding metal fitting is only held by the bobbin, and there is play between the U-shaped core and the bobbin.

  Then, an object of this invention is to provide the coil components which suppressed the backlash | gap generation | occurrence | production between a core and a bobbin.

  In order to solve the above-described problems, the present invention provides a first core portion and a second core portion that are arranged in parallel, one end of the first core portion, and one end of the second core portion. A first connecting part that connects the second core part, a first connecting part that connects the first core part and the second core part at the other end of the first core part and the other end of the second core part. A first core including at least a first connecting portion and a second core including at least a second connecting portion, and a first core portion inserted therein. A first cylinder part, a second cylinder part into which the second core part is inserted, a first collar part positioned at one end of the first cylinder part and one end of the second cylinder part and in contact with the first coupling part A bobbin portion having a second collar portion located at the other end of the first tube portion and the other end of the second tube portion and in contact with the second connecting portion; and mounted on the outer periphery of the first tube portion and the outer periphery of the second tube portion A coil component provided with That. In this coil component, the first connecting portion includes a first surface substantially parallel to the axial direction of the first core portion and the second core portion, and a second surface substantially parallel to the first surface and facing the first surface. And a first protrusion that extends from the surface facing the first connecting portion to the anti-first tube portion side and the anti-second tube portion side and is made of an elastic resin. And the second protrusion, and the first protrusion and the second protrusion are arranged at positions where they are elastically contacted with the first surface and the second surface, respectively.

  According to such a configuration, the core can be elastically held by the first protrusion and the second protrusion. Therefore, generation | occurrence | production of the backlash between a core and the bobbin provided with a 1st projection part and a 2nd projection part is suppressed.

  In the coil component configured as described above, the first projecting portion and the second projecting portion are deformed by the contact portion between the first surface and the second surface being scraped and deformed by the first connecting portion when the core is mounted on the bobbin. It is preferable that they are in contact with each other.

  According to such a configuration, since the first protrusion and the second protrusion and the first connecting part are in contact with each other, the first protrusion and the second protrusion and the first connecting part It is possible to suppress the occurrence of play between them, and to more reliably suppress the occurrence of play.

  In the coil component having the above-described configuration, the first protrusion and the second protrusion may be formed with slits extending in a direction substantially parallel to the first surface and the second surface, respectively.

  According to such a configuration, it is possible to adjust the resiliently holding force according to the width and length of the slit. Therefore, by forming optimal slits in the first protrusion and the second protrusion, the core can be suitably held by the first protrusion and the second protrusion.

  Further, the distance from the first surface to the second surface is configured to be larger than the diameters of the first core portion and the second core portion, and at a substantially intermediate position between the first surface and the second surface, It is preferable that the respective central axes of the core part and the second core part are located.

  According to such a configuration, the core can be mounted on the bobbin without the first and second winding core portions interfering with the first protrusion and the second protrusion.

  The resin base further includes a resin base that holds the bobbin and becomes a mounting position on the substrate, the resin base has a hooking claw for hooking the bobbin, and the second protrusion has a hook for hooking the hooking claw. It is preferable that it also serves as a stop.

  According to such a structure, since a 2nd projection part serves as a to-be-latched part, a structural member can be reduced.

  Also, the first connecting portion abuts on the anti-first winding core portion side and the anti-second winding core portion side and the anti-first winding core portion side and the anti-second winding core portion side of the second connecting portion, and the first winding It is preferable to further include a core pressing metal that clamps the core in the axial direction between the core and the second core.

  According to such a configuration, the first core and the second core can be integrated without using an adhesive or the like, and a magnetic gap due to the thickness of the adhesive is not formed. Can be improved.

  According to the coil component of the present invention, rattling that occurs between the core and the bobbin can be suppressed.

  A coil component according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the coil component 1 mainly includes a resin base 2, a core 4, a bobbin 3, and a coil 5. The resin base 2 is manufactured from an insulating resin. As shown in FIG. 2, the bottom wall portion 21, the first hook portions 22 </ b> A and 22 </ b> B, which are four hook claws, and the second hook portion. 23A and 23B (FIG. 6). The bottom wall portion 21 is configured in a substantially rectangular plate shape. As shown in FIGS. 1 and 2, the longitudinal direction of the bottom wall portion 21 is defined as the x-axis direction, and the short direction perpendicular to the x-axis direction is defined as the y-axis direction. Further, the direction orthogonal to the x-axis direction and the y-axis direction is defined as the z-axis direction, and the direction from the resin base 2 to the bobbin 3 to the coil 5 in the z-axis direction is upward (z-axis direction + side), and the opposite direction. It is defined as downward (z-axis direction-side). In the resin base 2, a rib portion 21 </ b> A that is erected upward is formed on the entire outer periphery of the bottom wall portion 21.

  The first latching portions 22A and 22B and the second latching portions 23A and 23B (FIG. 6) are distributed to positions near the four corners of the bottom wall portion 21, respectively. The first latching portions 22A and 22B and the second latching portions 23A and 23B (FIG. 6) are erected upward, respectively, and the first latching portions 22A and 22B are in the x-axis direction-side, The two latching portions 23A and 23B (FIG. 6) are on the + side in the x-axis direction, and the first latching portion 22A and the second latching portion 23A are located on the same straight line parallel to the x-axis. The hooking portion 22B and the second hooking portion 23B are arranged so as to be located on the same straight line parallel to the x-axis. As shown in FIG. 3, the first latching portion 22 </ b> A and the second latching portion 23 </ b> A are arranged so that the claws are opposed to each other, and the first latching portion 22 </ b> B and the second latching portion 22 </ b> A are arranged. In the part 23B, the claws are arranged facing each other.

  As shown in FIGS. 2 and 4, the bottom wall portion 21 includes base end portions of the first hooking portions 22 </ b> A and 22 </ b> B and base end portions of the second hooking portions 23 </ b> A and 23 </ b> B (FIG. 6). Through holes 22a, 22b, 23a, and 23b are formed, respectively. Further, in the bottom wall portion 21, a through hole 22c is formed between the through hole 22a and the through hole 22b and near the through hole 22b, and between the through hole 23a and the through hole 23b, the through hole 22b is formed. A through hole 23c is formed at a position near the hole 23b. The through hole 22c and the through hole 23c are located on an imaginary straight line parallel to the x axis.

  As shown in FIG. 2, the bobbin 3 mainly includes a first bobbin 31, a second bobbin 32, and an intermediate rod 33, and the first bobbin 31, The intermediate rod 33 and the second bobbin 32 are arranged so as to be positioned.

  The first bobbin 31 is made of a resin having elasticity such as polybutylene terephthalate, polyester, nylon, and the like. The first pipe part 31A and the second pipe part 31B, and the first pipe part 31A and the second pipe part 31B are arranged in parallel. It is mainly composed of a first flange portion 31C located on one end side (x-axis direction-side), and has a symmetrical shape in the y-axis direction and the z-axis direction. A through hole 31a and a through hole 31b are formed in the first pipe part 31A and the second pipe part 31B, respectively. The through hole 31a and the through hole 31b are on the side opposite to the first pipe part 31A of the first flange part 31C, Opening is made on the surface on the negative side in the x-axis direction that is on the side opposite to the second pipe portion 31B. In addition, as shown in FIG. 2, a first recess 31c that is recessed toward the x-axis + direction is formed on the surface that becomes the anti-first tube portion 31A and the anti-second tube portion 31B of the first flange portion 31C. Yes. The through-hole 31a and the through-hole 31b are opened in the first recess 31c, and the contour of the first recess 31c is shaped so that a first connecting portion 43 described later is located inside.

  Further, as shown in FIGS. 2 and 5, on the surface of the first flange portion 31 </ b> C on the anti-first tube portion 31 </ b> A side and the anti-second tube portion 31 </ b> B side, A pair of first protrusions 34 extending to the one tube portion 31A side and the anti-second tube portion 31B side (x-axis direction-side) are provided, and the lower edge portion extends in the same manner as the first protrusion portion 34. A pair of second protrusions 35 are provided.

  As shown in FIG. 5, the second protrusion 35 includes two protrusions aligned in the y-axis direction, and each of the two protrusions has a substantially rectangular and rectangular cross section orthogonal to the x-axis direction. The long side is parallel to the z-axis direction and is in contact with a second surface 43B described later. The first protrusions 34 are configured to be plane-symmetric with the second protrusions 35 with an axis parallel to the y-axis interposed therebetween, and are arranged in alignment in the y-axis direction and are in contact with a later-described first surface 43A. .

  A first hooked portion 35 </ b> A and a first hooked portion 35 </ b> B are provided at the y-axis direction negative side end portion and the positive side end portion of the second protrusion 35. The first locked portions 35A and 35B each have a plane located on the z-axis direction + side, and the claws of the first hook portions 22A and 22B are hooked on this plane. The first latching portions 35A and 35B are in contact with the side surfaces orthogonal to the y-axis direction of the first latching portions 22A and 22B in a state where the first latching portions 22A and 22B are latched. Protrusions that suppress the movement of the one latching portions 22A and 22B in the y-axis direction are provided.

  The second bobbin 32 is made of an elastic resin and has the same shape as the first bobbin 31, and is symmetrical with the first bobbin 31 with the intermediate rod 33 interposed therebetween, and is arranged in parallel as shown in FIG. 2. It is mainly composed of the third pipe part 32A and the fourth pipe part 32B, and the second flange part 32C located on the other end side (x-axis direction + side) of the third pipe part 32A and the fourth pipe part 32B. A through-hole 32a and a through-hole 32b are respectively formed in the third tube portion 32A and the fourth tube portion 32B, and the x-axis is formed on the surface that becomes the anti-third tube portion 32A and the anti-fourth tube portion 32B of the second flange portion 32C. A second recess 32c (FIG. 6) is formed which is depressed in the negative direction and opens through the through hole 32a and the through hole 32b. The first pipe portion 31A and the first pipe portion 31A are connected in a state where one end portion (x-axis direction-side end portion) of the third pipe portion 32A and the other end portion (x-axis direction + side end portion) of the first pipe portion 31A are combined. The first tube portion is provided from the three tube portions 32A, and one end portion (x-axis direction-side end portion) of the fourth tube portion 32B and the other end portion (x-axis direction + side end portion) of the second tube portion 31B. The second tube portion is provided from the second tube portion 31B and the fourth tube portion 32B.

  In the second flange portion 32C, as in the first bobbin 31, on the surface to be the anti-third tube portion 32A and the anti-fourth tube portion 32B, as shown in FIG. A third projection 36 is provided that extends from the first to the third anti-third tube portion 32A side and the fourth anti-fourth tube portion 32B side (FIG. 2), and extends to the lower edge in the same manner as the third projection portion 36. Four protrusions 37 are provided. The third projecting portion 36 and the fourth projecting portion 37 are configured in the same manner as the first projecting portion 34 and the second projecting portion 35. Further, the second hooking portion 37A and the second hooking portion on which the second hooking portions 23A and 23B are hooked on the y-axis direction negative side end portion and the positive side end portion of the fourth projecting portion 37, respectively. 37B is provided.

  The intermediate rod 33 is arranged parallel to the yz plane as shown in FIGS. 1 and 2, and as shown in FIG. 2, one end of the third pipe portion 32A and the other of the first pipe portion 31A. A first hole 33a into which the end portion is inserted, and a second hole 33b into which the one end portion of the fourth tube portion 32B and the other end portion of the second tube portion 31B are respectively inserted are formed. In addition, a first rib 33A is provided at an inner peripheral portion of the first hole 33a and at an intermediate position in the x-axis direction so that one end of the third tube portion 32A and the other end of the first tube portion 31A abut each other. A second rib 33B is provided at an inner peripheral portion of the second hole 33b and at an intermediate position in the x-axis direction so that one end of the fourth tube portion 32B and the other end of the second tube portion 31B abut each other. . The first bobbin 31 and the second bobbin 32 are joined to the intermediate rod 33 by joining the first bobbin 31 and the second bobbin 32 via the first rib 33A and the second rib 33B. Are arranged equally.

  In addition, the first bobbin 31 and the second bobbin 32 are joined via the intermediate rod 33, so that the first hooking portions 22A and 22B and the second hooking portions 23A and 22B arranged so as to face each other. The bobbin 3 that is hooked by is difficult to come off from the resin base 2.

  The core 4 is composed of a first core 41 and a second core 42 having a substantially U shape as shown in FIG. The first core 41 connects the first arm portion 41A and the second arm portion 41B, which are parallel to the x axis, and the first arm portion 41A and the second arm portion 41B at one end on the x axis direction side. The first connecting portion 43 is provided. The first arm portion 41A and the second arm portion 41B have the same shape and are formed in a cylindrical shape having a substantially circular cross section perpendicular to the x axis, and the first connecting portion 43 is substantially parallel to the xy plane. A first surface 43A disposed above the z-axis direction and a second surface 43B disposed substantially parallel to the xy plane and facing the first surface 43A and disposed below the z-axis direction are formed.

  In the first core 41, the first connecting portion 43, the first arm portion 41A, and the second arm portion 41B are such that the distance from the first surface 43A to the second surface 43B is the first arm portion 41A and the second arm portion 41B. And is arranged so that the central axes of the first arm portion 41A and the second arm portion 41B are positioned at a substantially intermediate position between the first surface 43A and the second surface 43B. ing.

  In the first connecting portion 43, the distance between the first surface 43A and the second surface 43B is such that the distance from the lowest position of the first protruding portion 34 in the state before the core 4 is mounted to the second protruding portion 35. It is configured to be slightly larger than the distance to the uppermost position (the distance between the first protrusion 34 and the second protrusion 35).

  The second core 42 has the same shape as the first core 41, is symmetrical with the first core 41 across the yz plane, and has a third arm portion 42 </ b> A and a fourth arm parallel to the x-axis direction. 42B, the 3rd arm part 42A, and the 4th arm part 42B are provided with the 2nd connection part 44 which connects the other end part of the x-axis direction + side. The second connecting portion 44 is formed with a third surface 44A substantially parallel to the xy plane and a fourth surface 44B substantially parallel to the xy plane and facing the third surface 44A.

  One end surface of the third arm portion 42A and one end surface of the fourth arm portion 42B, and the other end surface of the first arm portion 41A and the other end surface of the second arm portion 41B are bonded and integrated with an adhesive, respectively. The core 4 is configured and a closed magnetic circuit is formed. Also, a first core portion is provided from the first arm portion 41A and the third arm portion 42A which are bonded and integrated, and the second core portion is provided from the second arm portion 41B and the fourth arm portion 42B which are also integrated. Department is provided.

  As shown in FIG. 1, the coil 5 includes a first coil 51 that is a primary winding mounted on the first bobbin 31 and a second coil 52 that is a secondary winding mounted on the second bobbin 32. It is configured. In the first coil 51, a rectangular wire that is a covered conductor is wound in advance so as to follow the shape of the first bobbin 31, and specifically, from the x-axis direction − side to the + side of the first tube portion 31A. When viewed from the minus side to the plus side, the coil is wound clockwise and wound to the other end position of the first pipe portion 31A, from the upper position of the first pipe portion 31A to the lower position of the second pipe portion 31B. And is wound clockwise in a state where the second pipe portion 31B is viewed from the + side toward the − side toward the − side from the + side. Further, in the first coil 51, as shown in FIG. 4, the end 51A on the first tube portion 31A side protrudes from the through hole 22a of the resin base 2 to the lower surface of the resin base 2, and the end portion on the second tube portion 31B side. 51B protrudes from the through hole 22c of the resin base 2 to the lower surface of the resin base 2 so as to be electrically connected to a mounting board (not shown).

  As shown in FIG. 2, the second coil 52 has substantially the same shape as the first coil 51, and the x-axis direction of the third pipe portion 32 </ b> A is set so that the rectangular wire is in advance along the shape of the second bobbin 32. When it is wound from the + side to the-side and is wound to one end position of the third pipe part 32A, it is extended to the fourth pipe part 32B side, and the x-axis direction-side of the fourth pipe part 32B Wrapped from to the + side. In the second coil 52, as shown in FIG. 4, the end 52A on the third tube portion 32A side protrudes from the through hole 23a of the resin base 2 to the bottom surface of the resin base 2, and the end portion on the fourth tube portion 32B side. The end portion 52B protrudes from the through hole 23c of the resin base 2 to the lower surface of the resin base 2 and is configured to be electrically connected to a mounting board (not shown).

  When the coil component 1 having the above-described configuration is manufactured, the first core 41 includes the first arm portion 41A and the second arm portion 41B in the through-hole 31a and the through-hole 31b formed in the first bobbin 31, respectively. The other end side of the first connecting portion 43 is inserted into the first recess 31 c formed in the first bobbin 31 and attached to the bobbin 3. The first protrusion 34 and the second protrusion 35 are arranged on the outer periphery of the first recess 31c, but the first arm 41A and the second arm 41B have diameters from the first surface 43A of the first connecting part 43. Since the distance from the first surface 43A to the second surface 43B is smaller than the distance from the second surface 43B and equal to the distance from the first protrusion 34 to the second protrusion 35, the first arm 41A and the second arm The portion 41B is preferably inserted into the through hole 31a and the through hole 31b without interfering with the first protrusion 34 and the second protrusion 35.

  The distance between the first surface 43A and the second surface 43B is slightly larger than the distance between the first protrusion 34 and the second protrusion 35, and the first protrusion 34 and the second protrusion 35. Is made of resin and has a lower hardness than the first core 41 made of ferrite, and therefore the first connecting portion 43 has a portion facing the first recessed portion 31c between the first protruding portion 34 and the second protruding portion 35. The first projection 34 and the second projection 35 are inserted into the first recess 31c while the first projection 34 and the second projection 35 are expanded while slightly scraping at the edge of the first surface 43A and the edge of the second surface 43B. Therefore, no gap is formed between the first surface 43A and the second surface 43B and the first protrusion 34 and the second protrusion 35, and the first protrusion 34 and the second protrusion 35 The connecting portion 43 is held and elastically held, and rattling between the bobbin 3 and the first core 41 is suppressed. Similarly, since the second connecting portion 44 is held elastically between the third projecting portion 36 and the fourth projecting portion 37, the second core 42 is held between the bobbin 3 and the second core 42. The backlash is suppressed. Therefore, the play which generate | occur | produces between the core 4 and the bobbin 3 is prevented.

  In the present embodiment, in the core 4, the first connecting portion 43 and the second connecting portion 44 each suppress play, but the first core 41 including the first connecting portion 43 and the second connecting portion 44 including the second connecting portion 44. Since the two cores 42 are integrated with an adhesive, the backlash between the core 4 and the bobbin 3 can be reduced only by suppressing backlash by only one of the first connecting portion 43 and the second connecting portion 44. Generation of play can be suppressed. Moreover, although the 1st projection part and the 2nd projection part which suppress backlash are arrange | positioned only at the upper and lower sides, you may arrange | position not only to this but to the left and right (+ side of y-axis direction). Further, it is not necessary that the bobbin is made of an elastic body, and at least the first protrusion and the second protrusion may be elastic.

  Further, as shown in FIG. 7, slits 134 a and 135 a parallel to the xy plane may be inserted in the first protrusion 134 and the second protrusion 135. By adopting such a configuration, the elasticity of the first projecting portion 134 and the second projecting portion 135 is increased, and therefore the first projecting portion 134 and the second projecting portion 135 are scraped when the first core 41 is mounted. Is suppressed, and the first connecting portion 43 can be clamped suitably and resiliently. The slits may not be provided in both the first protrusion 134 and the second protrusion 135. That is, the slit 134a may be provided only in the first protrusion 134, and the second protrusion 135 may be configured such that the portion in contact with the first core 41 is cut as described above.

  In the present embodiment, the first core 41 and the second core 42 are integrated by bonding with an adhesive. However, the present invention is not limited to this, and as shown in FIG. A core pressing metal fitting 206 that contacts the axial direction − side and the x-axis direction + side of the second connecting portion 44 and clamps the core 4 in the x-axis direction may be mounted. In this configuration, a first holding portion 231 </ b> A and a second holding portion 232 </ b> A that hold the core pressing metal fitting 206 may be provided on the upper end edge of the first bobbin 231 and the upper end edge of the second bobbin 232, respectively.

  According to such a configuration, the first core 41 and the second core 42 can be integrated without using an adhesive or the like, and a magnetic gap due to the thickness of the adhesive is not formed. Magnetic performance can be improved. Moreover, since the core holding metal fitting 206 is held by the first holding portion 231A and the second holding portion 232A, the core holding metal fitting 206 is prevented from falling off the core 4 due to an impact or the like.

  In addition, the first hooked portion and the first hooked portion are provided side by side with the second protruding portion. However, the present invention is not limited thereto, and the second protruding portion is the first hooked portion and the first hooked portion. You may also use as. According to such a configuration, it is possible to reduce the number of components.

The perspective view of the coil components which concern on embodiment of this invention. The disassembled perspective view of the coil components which concern on embodiment of this invention. The front view of the coil components which concern on embodiment of this invention. The bottom view of the coil components which concern on embodiment of this invention. The right view of the coil components which concern on embodiment of this invention. The left view of the coil component which concerns on embodiment of this invention. The partial side view which concerns on the modification of the coil components which concern on embodiment of this invention. The perspective view which concerns on the modification of the coil components which concern on embodiment of this invention.

Explanation of symbols

1. Coil parts 2. Resin base 3. Bobbin 4. Core 5. Coil 21 Bottom wall 21A Rib 22A First latch 22B First latch 22a・ ・ Through hole 22b ・ ・ Through hole 22c ・ ・ Through hole 23A ・ ・ Second latching part 23B ・ ・ Second latching part 23a ・ ・ Through hole 23b ・ ・ Through hole 23c ・ ・ Through hole 31 ・ ・Bobbin 31A ··· First tube portion 31B · · Second tube portion 31C · · First collar portion 31a · · Through hole 31b · · Through hole 31c · · First recess 32 · · Second bobbin 32A · · · third tube Portion 32B ··· fourth tube portion 32C · · second flange portion 32a · · through hole 32b · · through hole 32c · · second recess 33 · · intermediate rib 33A · · first rib 33B · · second rib 33a · First hole 33b Second hole 34 First protrusion 35 Second protrusion 35A First Hook 35B ··· First hook 36 · · Third projection 37 · · Fourth projection 37A · · · Second hook 37B · · · Second hook 41 · · · First Core 41A ··· First arm portion 41B · · Second arm portion 42 · · Second core 42A · · Third arm portion 42B · · Fourth arm portion 43 · · First connection portion 43A · · First surface 43B · -Second surface 44-Second connection part 44A-Third surface 44B-Fourth surface 51-First coil 51A-End 51B-End 52-Second coil 52A-End 52B ・ ・ End

Claims (6)

The first core part and the second core part are connected to each other by the first core part and the second core part that are arranged in parallel, and one end of the first core part and one end of the second core part. A first connecting portion, and a second connecting portion connecting the first core portion and the second core portion at the other end of the first core portion and the other end of the second core portion. A core configured by integrally assembling a first core including at least the first connecting portion and a second core including at least the second connecting portion;
The first cylinder part into which the first core part is inserted, the second cylinder part into which the second core part is inserted, one end of the first cylinder part and one end of the second cylinder part. A bobbin having a first collar part contacting the first coupling part and a second collar part located at the other end of the first cylinder part and the other end of the second cylinder part and contacting the second coupling part And
A coil mounted on the outer periphery of the first cylinder part and the outer periphery of the second cylinder part,
The first connecting portion includes a first surface substantially parallel to the axial direction of the first core portion and the second core portion, and a second surface substantially parallel to the first surface and facing the first surface. A surface is formed,
The first flange portion includes a first protrusion portion and a second protrusion portion that are extended from the surface facing the first connecting portion to the anti-first tube portion side and the anti-second tube portion side and are made of an elastic resin. Part is provided,
The coil component, wherein the first projecting portion and the second projecting portion are disposed at positions where they are elastically contacted with the first surface and the second surface, respectively.   The first projecting portion and the second projecting portion are deformed by contact between the first surface and the second surface being scraped by the first connecting portion when the core is attached to the bobbin. The coil component according to claim 1, wherein the coil component is in contact in a state.   The coil according to claim 1, wherein slits extending in a direction substantially parallel to the first surface and the second surface are formed in the first protrusion and the second protrusion, respectively. parts.   The distance from the first surface to the second surface is configured to be larger than the diameters of the first core portion and the second core portion, and is substantially intermediate between the first surface and the second surface. 4. The coil component according to claim 1, wherein a central axis of each of the first core portion and the second core portion is located at a position. 5. It further comprises a resin base that holds the bobbin and becomes a mounting location on the substrate,
The resin base has a latching claw for latching the bobbin,
5. The coil component according to claim 1, wherein the second projecting portion also serves as a latched portion to which the latching claw is latched.   Abutting the anti-first core portion side and anti-second core portion side of the first connecting portion and the anti-first core portion side and anti-second core portion side of the second connecting portion; The coil component according to any one of claims 1 to 5, further comprising a core pressing metal member that clamps the core in an axial direction between the one core portion and the second core portion.

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