JP2009094476A - Coil component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coil component capable of regulating rotation of a bobbin against a core for sure. <P>SOLUTION: Three rotation regulating pieces 44 are provided with an equal space in parallel to a short side at the center of a pair of long side in a substantially rectangular insulating base 40, and provided upright on a flange opposing side 41 with shapes of substantially quadrangular prisms. The side of the rotation regulating piece 44 is formed as a flat surface 44A. The flat surface 44A of the rotation regulating piece 44 is brought into contact with the flange flat surface 22C to disable rotation of a bobbin 20 around the long side 12 of a core, when a hook is engaged into the hook-engaging through-hole of a flange 22. The core, the bobbin 20, and a conducting wire 30 are fixedly supported to the insulating base 40 without using an adhesive agent. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a coil component, and in particular, includes a substantially square-shaped core having four sides and a bobbin that is rotatably supported on the sides and wound with a conductive wire. The present invention relates to a coil component to which a bobbin is fixed.

  As the coil component, there is known a coil component having a core having a substantially square shape having four side portions and a bobbin that is rotatably supported on the side portions and wound with a conductive wire. One bobbin is provided on each of a pair of side portions of the core facing each other, and is supported on the side portion so as to be rotatable about the side portion of the core as a rotation axis.

  The bobbin includes a substantially cylindrical core part, and a flange part provided at one end and the other end of the core part and extending substantially perpendicular to the extending direction of the core part, along the rotation axis. It is configured so that it can be divided in half on the divided surface. The collar portion on one end side of the winding core portion has a gear. In a state where the side of the core is arranged at the axial center of the bobbin, the pair of halves of the bobbin are connected so that the split surfaces are brought into contact with each other to connect the side of the core. Placed in. In this state, the one end portion of the conducting wire is locked to the flange portion of the bobbin and the bobbin is rotated so that the conducting wire can be wound around the bobbin core portion.

The core is fixed to the terminal board after the conducting wire is wound around the core. At this time, the gear of one of the flanges is inserted into a groove formed in the terminal plate, and the rotation of the bobbin relative to the side part of the core is restricted. Such a coil component is described in, for example, JP-A-1-2088819 (Patent Document 1).
JP-A-1-2088819

  However, in the conventional coil component, when the core is fixed to the terminal plate after the conducting wire is wound around the winding core portion as described above, the gear of one collar portion is inserted into the groove formed in the terminal plate. Therefore, the rotation of the bobbin relative to the side of the core is restricted, but in order to restrict the rotation of the bobbin, the rotation of the bobbin cannot be restricted unless the fitting of the gear into the groove is tight. In fact, there was a problem that the bobbin would rotate.

  Then, an object of this invention is to provide the coil components which can restrict | limit the rotation of the bobbin with respect to a core reliably.

  In order to achieve the above object, the present invention is provided so as to surround a core having a substantially square shape by four sides and at least one of the sides, and the side as a rotation axis. A bobbin that is rotatably supported by the side part and has a winding core part around which a conducting wire is wound, and an insulating base that supports the core and the bobbin. The insulating base extends substantially in the direction of the bobbin. A bobbin locking portion having a protruding locking portion and a rotation regulating piece having a flat surface for regulating piece extending substantially in the direction of the bobbin are provided, and a part of the core portion in the axial direction of the bobbin includes: At least one hook part extending perpendicularly to the axial direction is provided. The hook part can be engaged with the engaging part and the flat surface of the regulation piece. The coil component which has a buttocks flat surface is provided.

  The insulating base is provided with a bobbin locking portion having a locking portion extending substantially in the direction of the bobbin, and a rotation restricting piece having a flat surface of the restriction piece extending substantially in the direction of the bobbin. A part of the core part is provided with at least one hook part extending perpendicularly to the axial direction. The hook part includes an engaging part with which the engaging part can be engaged and a flat surface of the regulating piece. Since the core and bobbin are fixed to the insulating base, the regulating piece flat surface and the collar flat surface are brought into contact with each other, and the locking portion is engaged with the engaging portion. The rotation of the bobbin relative to the core can be reliably regulated without using an adhesive. In addition, by engaging the engaging portion with the engaging portion, the rotation of the bobbin relative to the core can be reliably restricted and the core and the bobbin can be reliably fixed to the insulating base.

  Here, it is preferable that a plurality of the flange portions are provided, and the engaging portion and the flange flat surface are provided on the same flange portion.

  A plurality of flanges are provided, and since the engagement part and the flange flat surface are provided on the same flange, the engagement part and the flange flat surface can be close to each other in the coil component. The rotation can be regulated more reliably.

  The flange portion is provided at one end of the core portion, the other end, and an intermediate portion between the one end and the other end, and the engaging portion is provided at the one end of the core portion. It is preferable that the flange portion provided on the flange portion and the flange portion provided on the other end of the core portion are provided.

  The flange portion is provided at one end and the other end of the core portion, and an intermediate portion between the one end and the other end, and the engaging portion is provided at one end of the core portion and the core portion. Since it is provided on the flange provided at the other end of the bobbin, it can be fixed to the insulating base so that the bobbin is held by the bobbin locking portion at both ends of the bobbin, so that the fixing is more sure. Can do.

  Moreover, it is preferable that this insulating base has a collar part opposing surface which opposes a collar part, and this collar part has a base contact surface which can contact | abut to this collar part opposing surface.

  Since the insulating base has a buttock facing surface facing the buttock, and the buttock has a base abutting surface that can be brought into contact with the buttock facing surface by fixing the core and the bobbin to the insulating base, The base contact surface is brought into contact with the flange-facing surface with the surface, so that the rotation regulation of the bobbin relative to the core can be made more reliable.

  Further, the regulation piece flat surface is provided with a regulation piece flat surface engaging portion, and the collar flat surface is provided with a collar flat surface engaging portion that can be engaged with the regulation piece flat surface engaging portion. It is preferable.

  Since the regulating piece flat surface is provided with the regulating piece flat surface engaging portion, and the collar flat surface is provided with the collar flat surface engaging portion that can be engaged with the regulating piece flat surface engaging portion. By fixing the core and the bobbin to the base, it is possible to more reliably restrict the rotation of the bobbin with respect to the core by engaging the flange flat surface engaging portion with the restricting piece flat surface engaging portion.

  In addition, the bobbin locking portion is composed of a convex portion extending from the insulating base, the locking portion is composed of a protruding protruding end portion, and the engaging portion is a peripheral surface of the flange portion where the notch is formed. It is preferable to consist of these parts.

  The bobbin locking part consists of a convex part extending from the insulating base, the locking part consists of a protruding part of the convex part, and the engaging part consists of a part of the peripheral surface of the collar part where the notch is formed, With a simpler configuration, the rotation of the bobbin relative to the core can be made more reliable.

  In addition, two bobbins are provided, one on each of the pair of opposing sides, and an insulating partition plate extending from the insulating base is provided between the two bobbins in the axial direction of the two bobbins. It is preferable that the insulating partition plates are arranged in parallel, a part of the insulating partition plate acts as the rotation restricting piece, and a part of the surface of the insulating partition plate forms a flat surface of the restricting piece.

  Between the two bobbins, the insulating partition plate extending from the insulating base is arranged in parallel to the axial direction of the two bobbins. Therefore, a part of the insulating partition plate acts as a rotation restricting piece, and the insulating partition plate A part of the surface can be a regulating piece flat surface, and the configuration of the coil component can be simplified.

  Further, it is preferable that the rotation restricting piece is in contact with the core. Since the rotation restricting piece is in contact with the core, it is possible to prevent the core from rattling against the insulating base.

  Moreover, it is preferable that the one end and other end of this conducting wire comprise the pin terminal which makes a user terminal. Since one end and the other end of the conducting wire constitute a pin terminal that constitutes a user terminal, it is not necessary to provide a pin serving as a user terminal separately on the insulating base. It is not necessary to connect the connecting wires, the configuration of the coil component can be simplified, and the manufacturing process of the coil component can be simplified.

  Further, it is preferable that a gear that rotates coaxially and integrally with the core portion is provided in the flange portion. Since the gear portion is provided with a gear that rotates coaxially and integrally with the core portion, when the conductor is wound around the core portion, the gear of the collar portion is engaged with the gear of the coil component manufacturing apparatus. Thus, the lead wire can be wound around the core portion by rotating the gear of the collar portion.

  Moreover, it is preferable that this core is comprised integrally, and this bobbin is comprised so that division | segmentation is possible at the division surface along a rotating shaft direction.

  The core is configured as a single unit, and the bobbin is configured to be split on a split surface along the direction of the rotation axis. Therefore, compared with the case where the core can be split and the bobbin is configured as a single unit, the coil component has better characteristics. It can be.

  In addition, the insulating base has a substantially plate shape having an upper surface and a lower surface, and a base recess is formed on the upper surface in the direction of the lower surface, and the recess of the base recess is formed at a position corresponding to the base recess on the lower surface. It is preferable that a base convex portion protruding from the lower surface is provided following the above, and at least a part of the bobbin is accommodated in the base concave portion.

  The insulating base has a substantially plate shape having an upper surface and a lower surface, and a base concave portion that is recessed toward the lower surface is formed on the upper surface. A base that protrudes from the lower surface follows the depression of the base concave portion at a position corresponding to the base concave portion on the lower surface. Since the convex portion is provided and at least a part of the bobbin is accommodated in the base concave portion, the base convex portion can be fitted into a through hole formed in advance in the circuit board. For this reason, it is possible to reduce the height of the coil component mounted on the circuit board on the surface of the circuit board. In addition, when soldering to the circuit board by so-called reflow, the coil base conductor is prevented from being directly opposed to the molten solder by the portion of the insulating base that defines the base recess, thereby protecting the coil lead. It is possible to prevent the molten solder from landing on the conductive wire of the coil component.

  As described above, the present invention can provide a coil component that can reliably regulate the rotation of the bobbin relative to the core.

  A coil component according to a first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the coil component 1 is specifically a line filter, and the coil component 1 includes a core 10, a bobbin 20, a winding 30, and an insulating base 40.

  The core 10 is made of a magnetic material (for example, ferrite) and has a substantially square shape formed integrally as shown in FIGS. 1 and 2. The core 10 has a pair of short sides 11 and 11 and a pair of long sides 12 and 12 (FIG. 2), and the long side 12 cut perpendicularly to the longitudinal direction of the long sides 12 and 12. , 12 each have a substantially octagonal shape. The long side portions 12 and 12 are provided so as to be rotatable with respect to the long side portions 12 and 12 one by one with the bobbins 20 and 20 (FIG. 1) being respectively mounted.

  The bobbin 20 has a core portion 21 (FIG. 7) having a substantially cylindrical shape. As shown in FIG. 7, the long side portion 12 of the core 10 is disposed at the axial center position of the core portion 21. ing. At one end and the other end of the core portion 21, a flange portion 22 (FIG. 1 and the like) is provided. Further, an intermediate flange portion 23 is provided at an intermediate position between one end and the other end of the core portion 21. The flange portion 22 and the intermediate flange portion 23 each extend perpendicularly to the axial direction of the core portion 21 and have a substantially flange shape. Since the two bobbins 20 and 20 have the same shape, only one bobbin 20 will be described, and description of the other bobbin 20 will be omitted. Further, since the bobbin 20 has a point-symmetric shape with respect to the axial center position of the bobbin 20 and centered on the axial center position, only the flange portion 22-1 at one end of the core portion 21 will be described. The description of the collar 22-2 will be omitted.

  As shown in FIGS. 1 and 2, the flange portion 22 includes an end face plate 22 </ b> A and an inner plate 22 </ b> B that are arranged in parallel to each other and are oriented in a direction perpendicular to the axial direction of the core portion 21. In addition, a groove 22 a (FIG. 2) that is recessed from the peripheral surface of the flange 22 is formed between the end face plate 22 </ b> A and the inner plate 22 </ b> B. The end face plate 22A has a substantially disk shape, and as shown in FIG. 4, a pair of triangular cutouts 22b are formed in the diameter position. A through hole 22c through which the long side portion 12 of the core 10 passes is formed at the center position of the end face plate 22A, and a hook engagement through hole 22d having a substantially rectangular shape is formed at a position near the through hole 22c. Is formed. The portion of the inner plate 22B where the hook engaging through hole 22d is formed corresponds to the engaging portion.

  The inner plate 22B has a substantially quadrangular shape as if each corner is chamfered, and as shown in FIG. 5, a notch 22e that is substantially parallel to one side that defines the substantially quadrangular shape. Is formed. The notch 22e can lock a portion near one end 30A and a portion near the other end 30B of a conducting wire 30 to be described later, and locks the notch 22e at a portion near one end 30A and the other end 30B of the conducting wire 30. A portion closer to one end 30A and the other end 30B than the portion of the conducting wire 30 is configured to be accommodated in a groove 22a between the end face plate 22A and the inner plate 22B. A part of the peripheral surface of the inner plate 22B and corresponding to the four sides defining the substantially square shape of the inner plate 22B each form a flat surface, and one of the flat surfaces forms the flange flat surface 22C. None, the flat surface adjacent to the flange flat surface 22C forms the base contact surface 22D.

  The middle collar portion 23 of the bobbin 20 has a pair of middle collar inner side plates 23 </ b> A and 23 </ b> A arranged in parallel to each other in a direction perpendicular to the core portion 21. The middle collar inner plate 23A has the same shape as the inner plate 22B except that the notch 22e is not formed. Accordingly, like the inner plate 22B, as shown in FIG. 6, it corresponds to four sides that are a part of the peripheral surface of the middle collar inner plate 23A and define the substantially square shape of the middle collar inner plate 23A. Each of the portions forms a flat surface, and one of the flat surfaces forms a flange flat surface 23B, and the flat surface adjacent to the flange flat surface 23B forms a base contact surface 23C.

  As shown in FIG. 1, a gear 23 </ b> D is provided between the two middle flange inner plates 23 </ b> A and 23 </ b> A. The gear 23 </ b> D is provided coaxially with the core part 21 (FIG. 7), is configured integrally with the core part 21, and can rotate integrally with the core part 21. The gear 23D meshes with a gear of a coil component manufacturing apparatus (not shown) when the coil component 1 is manufactured, and the gear 23D rotates with a gear of the coil component manufacturing apparatus (not shown) so that the gear 23D The lead wire 30 is configured to rotate integrally and to wind the conductive wire 30 around the core portion 21.

  The bobbin 20 is divided into two divided bobbin portions 20-1 and 20-1 by dividing surfaces 20-1A and 20-1A (FIG. 6) along the direction in which the axis of the core portion 21 extending in the rotation axis direction extends. It can be divided into two parts. The divided bobbin portions 20-1 and 20-1 have the same shape, and form the bobbin 20 by contacting each other on the divided surfaces 20-1A and 20-1A. Since the core 10 is integrated as described above, the coil component 1 having better characteristics can be obtained compared to the case where the core 10 can be divided and the bobbin 20 is integrated.

  A conducting wire 30 is wound around the core portion 21. As the conducting wire 30, for example, a copper wire having a surrounding insulation coating is used. As shown in FIG. 1, FIG. 2, and FIG. 7, a total of two conducting wires 30 are wound around the one bobbin 20 and the other bobbin 20. More specifically, one conductor 30 has a portion in the vicinity of one end 30 </ b> A located in the vicinity of the flange 22-1 on one end side of one bobbin 20, and extends from the flange 22-1 toward the middle flange 23. As shown in FIG. 7, the wire is wound around the core portion 21 and is passed from the lower side of one bobbin 20 to the upper side of the other bobbin 20 at the position in the vicinity of the intermediate collar portion 23. 1, the core portion 21 is wound around the core portion 21 toward the flange portion 22-1 on the one end side of the bobbin 20. It is wound so as to be located at.

  Similarly, the other one conducting wire 30 has a portion in the vicinity of one end 30 </ b> A located in the vicinity of the flange 22-2 on the other end side of one bobbin 20, and the intermediate flange 23 from the flange 22-2. Is wound around the core portion 21 and is passed from the lower side of one bobbin 20 to the upper side of the other bobbin 20 at a position in the vicinity of the middle collar portion 23, and from the middle collar portion 23 on the other bobbin 20. It is wound around the core portion 21 toward the flange portion 22-2 on the other end side of the bobbin 20, so that the vicinity of the other end 30B of the conducting wire 30 is positioned in the vicinity of the flange portion 22-2 on the other end side of the bobbin 20. It is wound around. By winding the conducting wire 30 in this way, it is possible to improve the direct current superposition characteristics as compared with the coil component 101 according to the second embodiment described later.

  One end 30 </ b> A and the other end 30 </ b> B of the conducting wire 30 each constitute a pin terminal that is a user terminal. More specifically, a portion near one end 30A and a portion near the other end 30B of the conducting wire 30 extend from the core 21 toward an insulating base 40 described later, and a portion near one end 30A and a portion near the other end 30B of the conducting wire 30 are The portion of the lead wire 30 that is locked to a notch 40a (FIG. 2), which will be described later, is closer to the one end 30A than the locked portion of the conducting wire 30 is a pin terminal. Since one end 30A and the other end 30B of the conducting wire 30 constitute a pin terminal that constitutes a user terminal, it is not necessary to provide a separate user terminal pin on the insulating base 40, and the one end 30A and the other end 30B of the conducting wire 30 are provided on the pin. It is not necessary to connect the wires to be tangled and electrically connected, the configuration of the coil component 1 can be simplified, and the manufacturing process of the coil component 1 can be simplified.

  The insulating base 40 has a substantially rectangular plate shape and is made of an insulating material. The surface of the insulating base 40 forms a flange facing surface 41 that faces the core 10 and the bobbin 20, and the back surface forms a mounting substrate facing surface 42. As shown in FIG. 2, a substantially V-shaped notch 40a is formed in the vicinity of the four corners of the insulating base 40, and the tip of the notch 40a forming an acute angle forming a V-shape. Circular through-hole portions 40b and 40b smaller than the diameter of the conducting wire 30 are formed in the portion. In the through-hole portions 40b and 40b, a portion near the one end 30A and a portion near the other end 30B of the conducting wire 30 that is drawn out from the core portion 21 and constitutes the pin terminal are locked one by one. The through-hole portions 40b and 40b have a tapered shape with a diameter that decreases from the mounting substrate facing surface 42 toward the flange facing surface 41, and the conductive wires 30 locked to the through-hole portions 40b and 40b are different. However, it is configured to be able to be locked to the through-hole portions 40b and 40b.

  A hook 43 and a rotation restricting piece 44 are provided on the flange facing surface 41 of the insulating base 40. As shown in FIG. 1 and FIG. 2, one hook 43 is erected perpendicularly to the flange-facing surface 41, one at a position near the corner of the substantially rectangular insulating base 40. As shown in FIG. 4, a hook portion 43 </ b> A is provided at the tip of the hook 43, and each hook portion 43 </ b> A can be engaged with each of the hook engagement through holes 22 d of the flange portion 22. The hook 43 corresponds to a bobbin locking portion, and the hook portion 43A corresponds to a locking portion.

  Three rotation restricting pieces 44 are provided at equal intervals in parallel to the short side at the center position of the pair of long sides of the insulating base 40 having a substantially rectangular shape. Each of the rotation restricting pieces 44 has a substantially quadrangular prism shape, and is erected vertically on the collar-facing surface 41. As shown in FIGS. 5 and 6, the side surface of the rotation restricting piece 44 forms a restricting piece flat surface 44 </ b> A, and the hook portion 43 </ b> A of the hook 43 is engaged with the hook engaging through hole 22 d of the flange portion 22. Sometimes, the regulation piece flat surface 44A abuts against the flange flat surfaces 22C and 23B, and the bobbin 20 cannot rotate with respect to the long side portion 12 of the core 10, and the core 10, The bobbin 20 and the conducting wire 30 are configured to be supported and fixed to the insulating base 40.

  In addition, when the core 10, the bobbin 20, and the conducting wire 30 are fixed to the insulating base 40 in this way, a part of the flange-facing surface 41 of the insulating base 40 is brought into contact with the base as shown in FIG. It is comprised so that surface 22D and 23C may be contact | abutted. Therefore, the hook portion 43A of the hook 43 is engaged with the hook engaging through hole 22d of the flange portion 22, and the regulation piece flat surface 44A is in contact with the flange flat surfaces 22C and 23B. Since the part of the flange-facing surface 41 of the insulating base 40 comes into contact with the base contact surfaces 22D and 23C, the rotation of the bobbin 20 with respect to the long side portion 12 of the core 10 is more reliably performed without using an adhesive. It is comprised so that it can prevent.

  Further, since both the engaging portion and the flange flat surface 22C are provided on the flange portion 22, respectively, the engaging portion and the flange flat surface 22C can be in a close positional relationship in the coil component 1, The rotation can be regulated more reliably.

  Moreover, since the engaging part is provided in the collar part 22-1 provided in the end of the core part 21, and the collar part 22-2 provided in the other end of the core part 21, the bobbin 20 Since the bobbin 20 can be held by the hooks 43 at both ends, the fixing can be further ensured.

  In addition, when a coil component such as an inlet filter is manufactured using a coil obtained by winding the conductive wire 30 around the bobbin 20 as in the present embodiment, a toroidal coil is used instead of such a coil. In comparison with the coil component having the same characteristics, the height can be reduced. For example, when the height of the coil component 1 according to the present embodiment in the direction perpendicular to the collar-facing surface 41 can be about 15 mm, when the toroidal core 10 is used, the height is 20 to 22 mm.

  Next, a coil component according to a second embodiment of the present invention will be described with reference to FIGS. In the coil component 101 according to the second embodiment, a gear 123D is provided at the other end with respect to one end of the bobbin 120, and the other end of the bobbin 120 is replaced with the inner plate 22B in the middle of the first embodiment. The point that the second inner side plate 122B that is the same as the flange inner plate 23A is provided, the shape of the middle flange 123 of the bobbin 120 is different, the conductor 30 is wound around each bobbin 120 one by one, An insulating partition plate 46 is provided between the two bobbins 120, 120. A part of the insulating partition plate 46 acts as a rotation restricting piece, and a part of the surface of the insulating partition plate 46 forms a restricting piece flat surface 44A. This is different from the first embodiment. About points other than these, it is the same as 1st Embodiment, and abbreviate | omits description. The same members as those in the first embodiment will be described using the same reference numerals.

  At the other end of the bobbin 120, that is, the left end of the bobbin 120 shown in FIG. 9, a gear 123D is provided coaxially with the core 121 of the bobbin 120 so as to be integrally rotatable with the core 121. A hook engagement gear through hole 122d corresponding to the hook engagement through hole 22d of the first embodiment is formed on the end surface of the gear 123D forming the other end surface of the bobbin 120, and the hook engagement gear through hole 122d is formed. The hook portion 43A of the hook 43 can be engaged.

  A second inner side plate 122B, which is the same as the middle inner side plate 23A in the first embodiment, is provided closer to one end of the bobbin 120 than the gear 123D, that is, to the right side of FIG. Accordingly, the second inner plate 122B has a flange flat surface 122C similar to the flange flat surface 23B and a base contact surface (not shown) similar to the base contact surface 23C.

  Further, the middle flange portion 123 has a shape in which a pair of notches 123a are formed at the diameter position of the disk. The notch 123 a is formed in an arc shape, and the lead wire 30 can be passed from the one end side of the core portion 121 to the other end side with respect to the intermediate flange portion 123 through the notch 123 a along the core portion 121. It is configured to be able to.

  One conducting wire 30 is wound around each bobbin 120. One conductor 30 has a portion near one end 30 </ b> A located in the vicinity of the flange 22-1 on one end of one bobbin 120, and a core portion from the flange 22-1 toward the middle flange 123. In the vicinity of the second inner plate 122B at the other end of one bobbin 120, wound around 121, passed through the notch 123a of the intermediate collar 123, and wound around the other end of the core 121. It is pulled out from the core 121. Similarly, the other one conducting wire 30 has a portion in the vicinity of one end 30 </ b> A located in the vicinity of the flange 22-1 on one end side of the other bobbin 120, and extends from the flange 22-1 toward the middle flange 123. Is wound around the core 121, passes through the notch 123 a of the intermediate flange 123, and is wound around the other end of the core 121, and the second inner plate at the other end of the other bobbin 120. It is pulled out from the core 121 in the vicinity of 122B.

  An insulating partition plate 46 is provided between the two bobbins 120. The insulating partition plate 46 is arranged in parallel to the axial direction of the core 121, and as shown in FIG. 10, a thick portion 46A that extends vertically from the flange-facing surface 41 of the insulating base 140 and forms a base portion. None, a thin portion 46B is formed in a portion extending from the axial center of the bobbin 120. The insulating partition plate 46 is a rotation restricting piece, the side surface of the thick portion 46A is a restricting piece flat surface 46C, the hook portion 43A of the hook 43 is the hook engaging through hole 22d of the flange portions 22 and 122, the hook engaging gear. When engaging with the through-hole 122d, the regulation piece flat surface 46C abuts against the flange flat surfaces 22C and 122C by the surface, and the bobbin 120 becomes non-rotatable with respect to the long side portion 12 of the core 10, The core 10, the bobbin 120, and the conductive wire 30 are configured to be supported and fixed to the insulating base 140 without using an adhesive. The insulating partition plate 46 can act as a rotation restricting piece, and a part of the surface of the thick portion 46A of the insulating partition plate 46 can be a restricting piece flat surface 46C, and the configuration of the coil component 101 can be simplified. .

  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, the rotation restriction piece 44 and the insulating partition plate 46 may be configured to contact the core 10. For example, by increasing the length in the left-right direction of the rotation restricting piece 44 and the insulating partition plate 46 shown in FIGS. 2 and 9, the insulating partition plate 246 is made to be the core 10 as shown in FIGS. 11 and 12. A configuration in which the abutting member is brought into contact with the surface is conceivable. Further, by forming slit-like notches 246a and 246a in the vicinity of the portion of the insulating partition plate 246 that contacts the core 10, the portion of the insulating partition plate 246 that contacts the core 10 is made elastic. Also good. By adopting such a configuration, it is possible to prevent the core 10 from rattling against the insulating base 140.

  Also, a flange flat surface engaging portion provided with a restricting piece flat surface engaging portion made of a hook or the like on the restricting piece flat surface 44A, and having a recess or the like engageable with the restricting piece flat surface engaging portion on the flange flat surface. May be provided. By adopting such a configuration, by fixing the core and bobbin to the insulating base, the flange flat surface engaging portion is engaged with the restricting piece flat surface engaging portion, and the surface as in the present embodiment. The rotation regulation of the bobbin relative to the core can be made more reliable than in the state where the abutment is merely made.

  Moreover, although the bobbin locking part is configured by the hook 43 and the locking part is configured by the hook part 43A, the bobbin locking part is not limited to the hook and the hook part. As long as it can be engaged with the engaging portion of the collar portion, a bobbin locking portion and an engaging portion having other configurations may be used. For example, the bobbin locking part is constituted by a convex part extending from the insulating base, the locking part is constituted by a protruding protruding end part, and the engaging part is a part of the peripheral surface of the collar part in which the notch is formed The protrusion protruding end of the protrusion may be engaged with the notch on the peripheral surface of the flange. By adopting such a configuration, it is possible to more reliably restrict bobbin rotation with respect to the core with a simpler configuration.

  In addition, the hook engaging through hole 22d for engaging the hook portion 43A of the hook 43 is formed in the collar portion, but the hook engaging through hole is formed in the middle collar portion, and the hook engaging through hole is engaged. Hooks that are provided may be provided on the insulating base.

  Further, the number of bobbins, the number of windings, the number of rotation restricting pieces, the number of hooks, the number of hooks and middle hooks are not limited to the number of the present embodiment. Further, the position where the hook engagement through hole and the hook engagement gear through hole are formed is not limited to the position of the present embodiment, and may be any position as long as it can be engaged with the hook. The coil component 1 is specifically a line filter, but may be a noise filter other than the line filter, or may be a coil component other than the filter component.

  Further, the insulating base is not limited to the shape of the insulating bases 40 and 140 shown in the above-described embodiment. For example, as shown in FIGS. 13 to 15, the insulating base 240 has a substantially plate shape, and can accommodate the lower part of the bobbin 20 and the lower part of the conducting wire 30 shown in the figure at the central position of the upper surface of the insulating base 240. The base recess 240a may be formed to be depressed in the direction of the lower surface of the insulating base 240. Since the insulating base 240 is relatively thin, the base recess 240a protrudes from the lower surface following the recess of the base recess 240a by an amount corresponding to the recess of the base recess 240a formed on the upper surface at a position corresponding to the base recess 240a. A base convex portion 240A is provided. 240 A of base convex parts can be fitted in the through-hole 2a previously formed in the circuit board 2. As shown in FIG.

  For this reason, coupled with the fact that the lower part of the bobbin 20 and the lower part of the conducting wire 30 are accommodated in the base recess 240a, the height of the coil component 201 mounted on the circuit board 2 on the surface of the circuit board 2 can be reduced. . In addition, when soldering to the circuit board 2 by so-called reflow, the portion of the insulating base 240a that defines the base recess 240a prevents the lead wire 30 of the coil component 201 from directly facing the molten solder, thereby reducing the coil component. The lead wire 30 can be protected, and molten solder can be prevented from landing on the lead wire 30 of the coil component. In FIG. 15, the conductive wire 30 is omitted for convenience of explanation. Moreover, although the lower part of the bobbin 20 and the lower part of the conducting wire 30 were accommodated in the base recessed part 240a, it is not limited to this, For example, at least one part of the bobbin 20 may be accommodated.

  The present invention has a substantially square-shaped core having four sides and a bobbin that is rotatably supported on the side and is wound with a conductive wire, and the core and the bobbin are fixed to an insulating base. This is useful in the field of coil components.

The perspective view which shows the coil components by the 1st Embodiment of this invention. The top view which shows the coil components by the 1st Embodiment of this invention. The front view which shows the coil components by the 1st Embodiment of this invention. The right view which shows the coil components by the 1st Embodiment of this invention. Sectional drawing along the VV line | wire of FIG. Sectional drawing along the VI-VI line of FIG. Sectional drawing along the VII-VII line of FIG. The perspective view which shows the coil components by the 2nd Embodiment of this invention. The top view which shows the coil components by the 2nd Embodiment of this invention. Sectional drawing along the XX line of FIG. The perspective view which shows the modification of the coil components by embodiment of this invention. The top view which shows the modification of the coil components by embodiment of this invention. The front view which shows the modification of the coil components by the 1st Embodiment of this invention. The right view which shows the modification of the coil components by the 1st Embodiment of this invention. The disassembled perspective view which shows the modification of the coil components by the 1st Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 101, 201 Coil component 10 Core 11 Short side part 12 Long side part 20, 120 Bobbin 21, 121 Core part 22, 122 Eaves part 23, 123 Middle eaves part 30 Conductor 30A One end 30B The other end 20-1 Split bobbin Part 20-1A Split surface 22A End face plate 22B Inner plate 22C, 23B Hook flat surface 22D, 23C Base contact surface 22d, 122d Hook engagement through hole 23A Middle inner plate 23D, 123D Gears 40, 140, 240 Insulation base 41 Hook facing surface 42 Mounting substrate facing surface 43 Hook 43A Hook 44 Rotation restricting piece 44A, 46C Restricting piece flat surface 240a Base recessed portion 240A Base raised portion

Claims (12)

A core having a substantially square shape with four sides;
A bobbin provided around the at least one side part, supported on the side part so as to be rotatable about the side part and having a core part around which a conducting wire is wound;
An insulating base that supports the core and bobbin;
The insulating base is provided with a bobbin locking portion having a locking portion extending substantially in the direction of the bobbin, and a rotation restricting piece having a flat surface extending in the direction of the bobbin.
A part of the core part in the axial direction of the bobbin is provided with at least one hook part extending perpendicularly to the axial direction, and the hook part can be engaged with the engaging part. A coil component comprising: a joint portion; and a flange flat surface that can come into contact with the flat surface of the restriction piece. A plurality of the buttocks are provided,
The coil component according to claim 1, wherein the engaging portion and the flange flat surface are provided on the same flange. The flange portion is provided at one end of the winding core portion, the other end, and an intermediate portion between the one end and the other end,
The engagement portion is provided in the flange portion provided at the one end of the core portion and the flange portion provided at the other end of the core portion. The coil component according to claim 1 or 2. The insulating base has a buttock facing surface facing the buttock;
The coil part according to any one of claims 1 to 3, wherein the flange has a base contact surface that can contact the flange-facing surface with a surface.   The regulation piece flat surface is provided with a regulation piece flat surface engaging portion, and the collar flat surface is provided with a collar flat surface engaging portion that can be engaged with the regulation piece flat surface engaging portion. The coil component according to any one of claims 1 to 4, wherein: The bobbin locking portion is composed of a convex portion extending from the insulating base, and the locking portion is composed of a protruding protruding end portion,
The coil component according to any one of claims 1 to 5, wherein the engaging portion includes a portion of a peripheral surface of the flange portion in which a notch is formed.   Two bobbins are provided, one on each of a pair of opposing sides, and an insulating partition plate extending from the insulating base is parallel to the axial direction of the two bobbins between the two bobbins. 7. A part according to claim 1, wherein a part of the insulating partition plate acts as the rotation restricting piece, and a part of the surface of the insulating partition plate forms a flat surface of the restricting piece. The coil component according to any one of the above.   The coil component according to any one of claims 1 to 7, wherein the rotation restricting piece is in contact with the core.   The coil component according to any one of claims 1 to 8, wherein one end and the other end of the conducting wire constitute a pin terminal that forms a user terminal.   The coil component according to any one of claims 1 to 9, wherein the flange portion is provided with a gear that rotates coaxially and integrally with the core portion.   The coil component according to any one of claims 1 to 10, wherein the core is integrally formed, and the bobbin is configured to be split on a split surface along a rotation axis direction.   The insulating base has a substantially plate shape having an upper surface and a lower surface, and a base recess recessed in the direction of the lower surface is formed on the upper surface, and a position corresponding to the base recess on the lower surface follows the recess of the base recess. 12. The coil component according to claim 1, wherein a base convex portion protruding from the lower surface is provided, and at least a part of the bobbin is accommodated in the base concave portion.

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