JP4191671B2 - Common mode choke coil - Google Patents

Description

  The present invention relates to a common mode choke coil.

As one kind of conventional common mode choke coils, for example, as described in Patent Document 1, a coil having a box-shaped insulating container having an upper surface opening and a coil element having a square core is known. In this common mode choke coil, after the coil element is stored in the storage recess of the insulating container, the central hole of the square core is filled with an insulating resin (for example, silicone resin) and solidified to fix the coil element to the insulating container. ing.
Japanese Utility Model Publication No. 5-11424

  The insulating resin expands and contracts due to changes in the external environment such as changes in temperature and humidity. In the above-described common mode choke coil, when the insulating resin expands and contracts, stress is applied to the core and the winding constituting the coil element, resulting in a problem that the core is broken or the winding is disconnected. obtain. When the above-described common mode choke coil is used in an electronic device that is used in a situation in which the external environment changes significantly, in particular, an in-vehicle electronic device such as a car navigation system, there is a high possibility that this problem will remarkably appear.

  Further, in the above-described common mode choke coil, five side walls are required in order to form a storage recess for storing the coil element. Therefore, there is a problem that the size of the common mode choke coil is increased by the thickness of the side wall.

  Accordingly, an object of the present invention is to provide a common mode choke coil that is not easily affected by changes in the external environment and can be reduced in size.

  A common mode choke coil according to the present invention includes a core having a plurality of core portions arranged in parallel and a pair of flange portions positioned at both ends of the core portion so as to connect the plurality of core portions, A plurality of windings wound around each of the core parts, a plurality of terminal electrodes provided on each of the collar parts corresponding to each of the core parts, and a resin cover covering the core, The portion has first and second side surfaces that are opposed to each other in a direction perpendicular to the axial direction and the arrangement direction of the winding core portions, and each terminal electrode is located on the first side surface to which the winding is connected. A first electrode portion; and a second electrode portion electrically connected to the connection portion and positioned on the second side surface, the cover facing the first side surface and a pair of flanges A flat lid portion extending over the portion, and extending toward the second side so as to sandwich the collar portion from the lid portion Has a leg portion, the leg portion, characterized in that the locking pawl for engaging the flange to lock the cover the flange portion.

  The common mode choke coil according to the present invention includes a cover having a flat lid portion. Therefore, for example, when the common mode choke coil is automatically mounted on the circuit board, the lid can be easily sucked by the suction nozzle, so that automatic mounting can be efficiently performed. The cover also has a leg portion extending toward the second side surface. Since the leg portion is provided with a locking claw engaged with the collar portion, the cover and the core can be mechanically connected without using an insulating resin or the like. Therefore, adverse effects (such as stress applied to the core and the winding due to expansion and contraction) due to the use of insulating resin or the like can be eliminated, and as a result, it is less likely to be affected by changes in the external environment. Moreover, a cover covers a core with a cover part and a leg part, and does not store a core. Therefore, the side wall as in the prior art described above is not necessary, and the size can be reduced.

  Moreover, it is preferable that two pairs of leg portions are provided so as to sandwich each of the pair of collar portions. In this case, since each hook is sandwiched between the two legs, the cover can be more reliably fixed to the core.

  The flange further includes third and fourth side surfaces of each flange facing each other in the arrangement direction of the winding core portions, and each leg portion extends along the third and fourth side surfaces, respectively. It is preferable. In this case, since the leg portion presses the side surface of the collar portion, the shift of the cover with respect to the arrangement direction of the core portions can be suppressed.

  In addition, the cover further includes a pair of side wall portions extending in the axial direction of the core portion so as to extend between two legs separated in the axial direction of the core portion of the two pairs of leg portions, When viewed in a direction perpendicular to the axial direction and the arrangement direction of the core parts, the edge of each side wall part is provided closer to the lid part than the outermost position of the winding in the arrangement direction of the core parts. Preferably it is. In this case, the side wall is provided closer to the lid than the outermost position of the winding, and does not cover the outermost position of the winding. Accordingly, the common mode choke coil can be reduced in size, and the winding located closer to the lid than the outermost position can be protected. Moreover, the rigidity of a cover can also be improved by providing a side wall part.

  Moreover, it is preferable that the cover further has a plate-shaped partition part provided between adjacent core parts among a plurality of core parts along the axial direction of the core part. In this case, adjacent core parts can be made non-contact. Moreover, since the partition part is provided along the axial direction of the core part, the shift | offset | difference of the cover with respect to the axial direction of a core part can be suppressed.

  Moreover, the groove part is provided with a groove part into which an end of the partition part in the axial direction of the core part is inserted, and the groove part has a surface facing the partition part in the arrangement direction of the core part. Is preferred. Such a groove part functions as a guide groove for guiding the partition part when the cover is attached to the core. Thus, the cover can be easily attached. In addition, after the attachment, the cover is positioned by the groove and the partition part, so that the displacement of the cover can be more reliably suppressed.

  According to the present invention, it is possible to provide a common mode choke coil that is not easily affected by changes in the external environment and can be miniaturized.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description, the same reference numerals are used for the same elements or elements having the same function, and redundant description is omitted.

  The common mode choke coil according to the present embodiment is for reducing common mode noise and normal mode noise that are superimposed on a power source or a signal in an electronic device or the like. More specifically, the common mode choke coil according to the present embodiment is used in in-vehicle electronic devices such as car navigation. Hereinafter, the configuration of the common mode choke coil 1 according to the present embodiment will be described with reference to the drawings. FIG. 1 is a perspective view showing a common mode choke coil according to the present embodiment. 2A to 2C are side views showing the common mode choke coil according to the present embodiment. 3 and 4 are perspective views showing cores included in the common mode filter according to the present embodiment. FIGS. 5A to 5C are side views showing cores included in the common mode filter according to the present embodiment. 6A to 6C are side views showing electrodes included in the common mode filter according to the present embodiment. FIG. 7 is a perspective view showing cores, windings, and terminal electrodes included in the common mode filter according to the present embodiment. FIGS. 8A to 8C are side views showing cores, windings, and terminal electrodes included in the common mode filter according to the present embodiment. FIG. 9 is a perspective view showing a cover included in the common mode filter according to the present embodiment. FIGS. 10A and 10B are side views showing a cover included in the common mode filter according to the present embodiment.

  As shown in FIG. 1, the common mode choke coil 1 includes a core 10, a winding 30, a terminal electrode 40, and a cover 60.

  The core 10 is made of a magnetic material (for example, ferrite). As shown in FIG. 3, the core 10 includes first and second core portions 11 and 12 and a pair of flange portions 15. Hereinafter, the axial direction of the first and second core parts 11 and 12 is orthogonal to the X-axis direction, and the arrangement direction of the first and second core parts 11 and 12 is orthogonal to the Y-axis direction, the X-axis direction, and the Y-axis direction. The direction is defined as the Z-axis direction.

  The first and second core parts 11 and 12 are arranged in parallel to each other and have a substantially columnar shape. As shown in FIG. 4, the first and second core portions 11 and 12 have an upper surface 13 and a lower surface 14 that face each other in the Z-axis direction. The upper surface 13 has a substantially arc shape that is convex from the axis of the first and second core parts 11 and 12 toward the Z-axis upward direction. The lower surface 14 has a substantially arc shape that protrudes downward from the axis of the first and second core portions 11 and 12 in the Z-axis downward direction.

  As shown in FIG. 3, a pair of flange portions 15 are provided at both ends in the X-axis direction. The flange portion 15 is formed integrally with the first and second core portions 11 and 12.

  As shown in FIGS. 4 and 5A to 5C, the flange 15 has a substantially rectangular parallelepiped shape and has first to sixth side surfaces 16 to 21. The first side surface 16 and the second side surface 17 face each other in the Z-axis direction. The third side surface 18 and the fourth side surface 19 of the flange portion 15 face each other in the Y-axis direction. In addition, the fifth side surface 20 and the sixth side surface 21 face each other in the X-axis direction.

  The first side surface 16 is a surface facing a cover 60 described later. As shown in FIG. 3, the first side surface 16 is provided with two recesses 22. The concave portion 22 is formed at a position corresponding to the first and second core portions 11 and 12 in the Y-axis direction. The opening end of the recess 22 extends from the midway position in the X-axis direction of the first side surface 16 to the end of the fifth side surface 20 on the first side surface 16 side. The concave portion 22 serves to guide a convex portion 44 included in the first electrode portion 41 described later.

  The second side surface 17 is a surface (mounting surface) facing the circuit board when the common mode choke coil 1 is mounted on the circuit board (not shown). As shown in FIGS. 4 and 5C, the second side surface 17 is provided with two recesses 23. The concave portion 23 is formed at a position corresponding to the first and second core portions 11 and 12 in the Y-axis direction. The opening end of the recess 23 extends from the midway position in the X-axis direction of the second side surface 17 to the end of the fifth side surface 20 on the second side surface 17 side. The concave portion 22 serves to guide a convex portion 45 provided in the second electrode portion 42 described later.

  The sixth side surface 21 is a surface on which the first and second core portions 11 and 12 are formed. As shown in FIGS. 3 and 5B, the upper surfaces 13 of the first and second core portions 11 and 12 are higher than the first side surface 16 in the Z-axis direction. Further, as shown in FIG. 8B, the distance between the lower surface 14 of the first and second core parts 11 and 12 and the second side surface 17 is larger than the diameter of the winding 30 described later. It has become. Further, as shown in FIG. 3, a groove 24 is formed in the sixth side surface 21. The groove portion 24 is provided between the first core portion 11 and the second core portion 12 in the Y-axis direction, and the second side surface 17 from the end on the first side surface 16 side in the Z-axis direction. It is provided so as to cross over the side edge. As shown in FIG. 5A, the groove portion 24 has a bottom surface 25. The bottom surface 25 faces the second side surface 80 of a partition portion 78 included in the cover 60 described later.

  As shown in FIG. 3, guide portions 26 are formed between the first side surface 16 and the third side surface 18, and between the first side surface 16 and the fourth side surface 19, respectively. . The guide portion 26 plays a role of guiding a locking claw 68 of the cover 60 to the second side surface 17 side of the flange portion 15 when a cover 60 described later is attached to the core 10. The guide part 26 has the 1st plane 26a and the inclined surface 26b. The first flat surface 26 a is located between the first side surface 16 and the third side surface 18 and between the first side surface 16 and the fourth side surface 19. The inclined surface 26b is located between the first side surface 16 and the first plane 26a, and a step is formed between the first side surface 16, the inclined surface 26b, and the first plane 26a.

  As shown in FIG. 4, locking receiving portions 27 are formed between the second side surface 17 and the third side surface 18 and between the second side surface 17 and the fourth side surface 19. ing. The latch receiving portion 27 has a second flat surface 27a and an inclined surface 27b. The second plane 27 a is located between the second side surface 17 and the third side surface 18 and between the second side surface 17 and the fourth side surface 19. The inclined surface 27b is located between the second side surface 17 and the second plane 27a, and a step is formed between the first side surface 16, the inclined surface 27b, and the second plane 27a.

  As shown in FIG. 7, windings 30 are wound around the first and second core parts 11 and 12, respectively. As the winding 30, for example, an insulating coated copper wire can be used. The windings 30 wound around the first and second core parts 11 and 12 are electrically insulated from each other and magnetically coupled to each other.

  As shown in FIG. 7, two terminal electrodes 40 are provided on each flange portion 15 of the core 10. Each terminal electrode 40 includes a first electrode portion 41, a second electrode portion 42, and a conductor portion 43. As shown in FIG. 8A, the first electrode portion 41 is located on the first side surface 16 of each flange portion 15. Further, as shown in FIG. 6B, a convex portion 44 is provided on the lower surface (the surface facing the first side surface 16) in the Z-axis direction of the first electrode portion 41. As shown in FIG. 8C, the second electrode portion 42 is located on the second side surface 17 of each flange portion 15. Further, as shown in FIG. 6B, a convex portion 45 is provided on the upper surface (the surface facing the second side surface 17) in the Z-axis direction of the second electrode portion 42. As shown in FIGS. 6C and 7, the first electrode portion 41 and the second electrode portion 42 are connected via a conductor portion 43 provided along the fifth side surface 20. Yes. The first electrode portion 41, the second electrode portion 42, and the conductor portion 43 are formed by bending a metal plate.

  Further, as shown in FIG. 7, the first electrode portion 41 is connected to the connecting portion of the winding 30 wound around the first and second core portions 11 and 12. As shown in FIG. 6A, both end portions 41 a of the first electrode portion 41 are bent toward the central portion 41 b of the first electrode portion 41. Such connection (connection) between the first electrode portion 41 and the winding 30 is performed by soldering. At this time, as shown in FIG. 8B, the distance L1 in the Z-axis direction between the second side surface 17 of the flange 15 and the soldered portion (dotted line portion in FIG. 8), and the flange 15 A distance L2 in the Z-axis direction between the second side surface 17 and the winding 30 wound around the first and second core portions 11 and 12 substantially matches.

  As shown in FIG. 1, a cover 60 is attached to the core 10. The cover 60 is made of a nonmagnetic material such as a liquid crystal polymer resin. As shown in FIG. 9, the cover 60 includes a lid portion 61, leg portions 66 and 67, and side wall portions 69 and 70. The cover part 61, the leg parts 66 and 67, and the side wall parts 69 and 70 are integrally formed.

  The lid portion 61 is provided so as to cover the upper surface of the core 10 across the first side surface 16 of the one flange portion 15 and the first side surface 16 of the other flange portion 15. The upper surface of the lid 61 has a flat plate shape. By flattening the upper surface of the lid 61 in this way, the common mode choke coil 1 can be sucked by the suction nozzle of the automatic mounting machine. Four recesses 65 are formed in the vicinity of each corner of the lid 61. These recesses 65 are provided to facilitate the removal of the cover 60 from the mold when the cover 60 is formed by molding, for example.

  As shown in FIGS. 1 and 9, leg portions 66 and 67 extend from the lid portion 61 along the Z-axis direction. The leg portion 66 is provided along the third side surface 18 of each flange portion 15 when the cover 60 is attached to the core 10. Further, the leg portion 67 is provided along the fourth side surface 19 of each flange portion 15 when the cover 60 is attached to the core 10. That is, each flange 15 is sandwiched between the leg portions 66 and 67. The leg portion 66 has a width equivalent to that of the third side face 18, and the leg portion 67 has a width equivalent to that of the fourth side face 19.

  As shown in FIGS. 1 and 9, locking claws 68 are integrally formed at the ends of the leg portions 66 and 67, respectively. Each locking claw 68 protrudes from the flange 15 side so as to be locked by the locking receiving portion 27 of the flange 15 when the cover 60 is attached to the core 10. Further, as shown in FIG. 2C, the locking claw 68 is provided so as to be positioned above the second electrode portion 42 in the Z-axis direction when the cover 60 is attached to the core 10. By providing the locking claw 68 at such a position, it is possible to prevent the circuit board and the locking claw 68 from coming into contact when the common mode choke coil 1 is mounted on the circuit board.

  As shown in FIGS. 1 and 9, a side wall 69 is provided so as to cross between the leg 66. Further, a side wall 70 is provided so as to cross between the leg 67 and the leg 67. As shown in FIGS. 2A and 2B, when the cover 60 is attached to the core 10, the lower edge 71 of the side wall 69 is wound around the first core 11. It is located closer to the lid 61 in the Z-axis direction than the outermost position of 30. Similarly, the lower edge 73 of the side wall part 70 is located closer to the lid part 61 in the Z-axis direction than the outermost position of the winding 30 wound around the second core part 12. By setting the lower edges 71 and 73 of the side wall portions 69 and 70 in such positions, the side wall portions 69 and 70 and the winding 30 can be brought into non-contact. Further, in the Y-axis direction, the side walls 69 and 70 can be provided on the inner side of the outermost position of the winding 30.

  As shown in FIG. 9 and FIG. 10A, a plurality of ribs are provided on the connection portion between the lid portion 61 and the side wall portion 69 and the connection portion between the lid portion 61 and the side wall portion 70 on the back surface of the cover 60. 75 is formed. The rib 75 is provided so as not to contact the core 10. Such ribs 75 are provided for the purpose of reinforcing the cover 60.

  As shown in FIGS. 1 and 9, a pair of convex portions 76 are formed on the back surface of the lid portion 61. When the cover 60 is attached to the core 10, the convex portion 76 is provided so that the bottom surface 77 of the convex portion 76 shown in FIG. 9 abuts on the first side surface 16 of each flange 15. The contact position is between the two first electrode portions 41 in the Y-axis direction. That is, the length of the convex portion 76 is shorter than the length of each flange 15 in the X-axis direction, and the length of the convex portion 76 is longer than the length between the first electrode portions 41 in the Y-axis direction. Is also shorter. Further, as shown in FIG. 2C, the length of the convex portion 76 in the Z-axis direction is such that when the cover 60 is attached to the core 10, the winding wound around the back surface of the lid portion 61 and the core 10. The length is such that the upper surface of the line 30 is not in contact. By providing such a convex portion 76, contact between the lid portion 61 and the winding 30 wound around the core 10 and the soldered first electrode portion 41 can be prevented.

  As shown in FIGS. 9 and 10, a partition portion 78 is formed between the convex portions 76. The partition part 78 has a flat plate shape extending in the X-axis direction. The partition part 78 is located between the first core part 11 and the second core part 12 in the Y-axis direction when the cover 60 is attached to the core 10, and both ends thereof in the X-axis direction. The portion is provided so as to enter the groove portion 24 of each of the flange portions 15 described above. The partition portion 78 has a first side surface 79 that opposes the Y-axis direction and a second side surface 80 that opposes the X-axis direction. The first side surface 79 faces the bottom surface 25 of the groove portion 24. The second side face 80 faces the winding 30 wound around the first and second core parts 11 and 12. Further, as shown in FIG. 10B, the length of the partition portion 78 in the Z-axis direction is shorter than the leg portions 66 and 67. By setting the partition portion 78 to such a length, contact between the circuit board and the partition portion 78 can be prevented.

  When such a cover 60 is placed on the core 10, the locking claw 68 of the cover 60 is guided to the second side surface 17 side by the guide portions 26 provided on the flange portions 15. At the same time, the partition portion 78 of the cover 60 is guided to the second side surface 17 side by the groove portion 24 provided in each flange portion 15. The locking claw 68 advances downward along the third and fourth side surfaces 18 and 19 in the Z-axis direction and is locked by a locking receiving portion 27 formed on the third and fourth side surfaces 18 and 19. On the other hand, the partition part 78 advances in the Z-axis downward direction along the groove part 24, and when the bottom surface 77 of the convex part 76 provided on the cover 60 comes into contact with the first side surface 16 of each flange part 15, the partition part 78. The position is fixed in a state where both ends are inserted into the groove 24. When the locking claw 68 is locked to the locking receiving portion 27 and the position of the partition portion 78 is fixed, the leg portions 66 and 67 of each cover 60 are respectively connected from the third and fourth side surfaces 18 and 19 side. The flange 15 is sandwiched. In this way, the attachment of the cover 60 to the core 10 is completed.

  As described above, in the present embodiment, the cover 60 is provided with the leg portions 66 and 67, and the locking claws 68 engaged with the flange portions 15 are provided at the ends of the leg portions 66 and 67, respectively. Is provided. Since the locking claws 68 are hooked on the locking receiving portions 27 formed on the flange portions 15, the cover 60 can be fixed to the core 10. Therefore, since the cover 60 and the core 10 can be mechanically connected without using an insulating resin, adverse effects caused by using the insulating resin can be eliminated. The cover 60 covers the core 10 with the lid portion 61 and the leg portions 66 and 67, and does not have a shape that accommodates the core 10. Therefore, the side wall for accommodating the core 10 becomes unnecessary. As a result, it is less affected by changes in the external environment and can be downsized.

  In the present embodiment, the leg portions 66 and 67 are provided so as to sandwich the flanges 15, so that the cover 60 can be more securely fixed to the core 10. Since the leg portion 66 is along the third side surface 18 of each flange portion 15 and the leg portion 67 is along the fourth side surface 19, the displacement of the flange portion 15 with respect to the Y-axis direction is caused by the leg portions 66 and 67. Can be suppressed.

  In the present embodiment, the cover 60 has a pair of side wall portions 69 and 70. The side wall portions 69 and 70 are provided closer to the lid portion 61 than the outermost position of the winding 30. Therefore, the side wall portions 69 and 70 can be provided without protruding outside the outermost position of the winding 30 in the Y-axis direction. Therefore, the common mode choke coil 1 can be reduced in size, and the winding 30 located closer to the lid 61 than the outermost position can be protected. Furthermore, the rigidity of the cover 60 can be increased.

  In the present embodiment, the cover 60 has a plate-shaped partition part 78. The partition part 78 is provided so as to be positioned between the first core part 11 and the second core part 12 when the cover 60 is attached to the core 10. By providing such a partition part 78, the 1st core part 11 and the 2nd core part 12 can be made non-contact. Furthermore, since the partition part 78 is provided so that it may be located between the collar part 15 and the collar part 15 in the X-axis direction, the shift of the cover 60 with respect to the X-axis direction is caused by the surface of the partition part 78 on the collar part 15 side. Can be suppressed.

  In the present embodiment, the flange portion 15 is provided with the groove portion 24 into which the end of the partition portion 78 is inserted. Since such a groove portion 24 serves to guide the partition portion 78, when the cover 60 is attached to the core 10, the partition portion is formed on the winding 30 wound around the first and second core portions 11 and 12. 78 can be prevented from coming into contact. In addition, since the groove portion 24 and the partition portion 78 position the cover 60 after the cover 60 is attached, the displacement of the cover 60 can be more reliably suppressed.

  Moreover, in this embodiment, the 1st side surface 16 of the collar part 15 is located in the place lower than the upper surface 13 of the 1st, 2nd core parts 11 and 12 in a Z-axis direction. Therefore, the position in the Z-axis direction of the winding 30 wound around the first and second core parts 11 and 12, and the position in the Z-axis direction of the first electrode portion 41 to which the winding 30 is soldered Can be easily matched. In this case, since the first electrode portion 41 does not protrude from the periphery, the outer size of the common mode choke coil 1 itself can be reduced. Further, as compared with the case where the winding 30 is connected to the protruding electrode portion, it is not necessary to forcefully bend the lead-out portion of the winding 30, so that disconnection or damage of the winding 30 can be prevented. Furthermore, when the cover 60 is attached to the core 10, the lid portion 61 of the cover 60 can be maintained in a more stable state and horizontal, so that the common mode choke coil 1 is more reliably secured by the suction nozzle of the automatic mounting machine. Can be absorbed. In addition, since the first side surface 16 is located between the upper surface 13 and the lower surface 14 of the first and second core portions 11 and 12, the lead-out portion of the winding 30 can be short. Therefore, the direct current resistance can be kept low.

  In the present embodiment, the upper surface 13 and the lower surface 14 of the first and second core portions 11 and 12 are formed in an arc shape outward from the axis of the core portions 11 and 12, so that the winding 30 is When wound along the outer peripheral surfaces of the first and second winding core portions 11 and 12, the winding 30 is less likely to be displaced or loosened. Therefore, the winding 30 can be wound orderly.

  The preferred embodiments of the present invention have been described above, but the present invention is not necessarily limited to these embodiments.

  In the present embodiment, the latch receiving portion 27 is formed between the second side surface 17 and the third side surface 18 and between the second side surface 17 and the fourth side surface 19. If the latching claw 68 can be latched to the flange portion 15, the latch receiving portion 27 may not be formed again.

  In the present embodiment, the connection (connection) between the first electrode portion 41 and the winding 30 is performed by soldering, but may be performed by thermocompression bonding, welding, or caulking. Good.

It is a perspective view which shows the common mode choke coil which concerns on this embodiment. It is a side view which shows the common mode choke coil which concerns on this embodiment. It is a perspective view which shows the core contained in the common mode choke coil which concerns on this embodiment. It is a perspective view which shows the core contained in the common mode choke coil which concerns on this embodiment. It is a side view which shows the core contained in the common mode choke coil which concerns on this embodiment. It is a side view which shows the electrode contained in the common mode choke coil which concerns on this embodiment. It is a perspective view which shows the core contained in the common mode filter which concerns on this embodiment, a coil | winding, and a terminal electrode. It is a side view which shows the core contained in the common mode filter which concerns on this embodiment, a coil | winding, and a terminal electrode. It is a perspective view which shows the cover contained in the common mode filter which concerns on this embodiment. It is a side view which shows the cover contained in the common mode filter which concerns on this embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Common mode choke coil, 10 ... Core, 11, 12 ... Core part, 15 ... Gutter part, 16 ... 1st side surface, 17 ... 2nd side surface, 18 ... 3rd side surface, 19 ... 4th Side surface, 24 ... groove, 30 ... winding, 40 ... terminal electrode, 41 ... first electrode part, 42 ... second electrode part, 60 ... cover, 61 ... lid part, 66,67 ... leg part, 68 ... Locking claws, 69, 70 ... sidewall portions, 78 ... partitioning portions.

Claims (5)

A core having a plurality of core portions arranged in parallel, and a pair of flange portions located at both ends of the core portion so as to connect the plurality of core portions;
A plurality of windings wound around each of the winding core parts;
A plurality of terminal electrodes provided in each of the flanges corresponding to the respective winding cores;
A resin cover that covers the core,
The flange portion includes first and second side surfaces that face each other in a direction perpendicular to the axial direction and the arrangement direction of the core portions, and third and fourth side surfaces that face the arrangement direction of the core portions, Have
Each of the terminal electrodes is connected to the first electrode portion located on the first side surface, to which the winding is connected, and to the second side surface while being electrically connected to the first electrode portion. A second electrode portion located,
The cover is opposed to the first side surface and extends over the pair of flanges, and extends along the pair of flanges, along the third and fourth side surfaces and from the lid to the pair of flanges, respectively. The two pairs of leg portions extending toward the second side face so as to sandwich the gap, and the two pairs of leg portions so as to cross between the two leg portions separated in the axial direction of the core portion. A pair of side wall portions extending in the axial direction of the core portion, and
The leg portion is provided with a locking claw for engaging the flange portion and locking the flange portion and the cover .
The edge of each of the side wall portions is more than the outermost position of the winding in the arrangement direction of the core portions when viewed in a direction perpendicular to the axial direction and the arrangement direction of the core portions. A common mode choke coil characterized by being provided on the side . The said cover further has the plate-shaped partition part provided between the adjacent core parts among these core parts along the axial direction of the said core part, It is characterized by the above-mentioned. 1. The common mode choke coil according to 1. The flange portion is provided with a groove portion into which an end of the partition portion in the axial direction of the core portion is inserted, and the groove portion has a surface facing the partition portion in the arrangement direction of the core portions. The common mode choke coil according to claim 2, wherein: In the direction perpendicular to the axial direction and the arrangement direction of the winding core portions, the distance between the outermost position of the portion of the winding wound around the winding core portion and the second side surface is each The distance between each outermost position of the part where the terminal electrode and the said coil | winding are connected, and the said 2nd side surface is substantially the same, The any one of Claims 1-3 characterized by the above-mentioned. Common mode choke coil as described. The common mode choke coil according to claim 1, wherein a concave portion is formed in the vicinity of the two pairs of leg portions in the lid portion.

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