JP2011138911A - Wound coil component, and method of manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wound coil component that hardly causes a short circuit and a mounting defect such as an inclined posture. <P>SOLUTION: In the wound coil component 1, a collar portion 23 on a mounting surface side of a drum type core 2 includes a first leg portion 23a and a second leg portion 23b that face each other across a groove-like void space 23c, and a jetty-shaped partition portion 23d which parts a ceiling surface of the void space 23c into a first ceiling surface 23e and a second ceiling surface 23f, and a necessary spacing (h) is secured between a plane including bottom surfaces of both leg portions 23a and 23b, and the partition portion 23d. Further, a first terminal electrode 3 is provided in a region including a surface of the first leg portion 23a and the first ceiling surface 23e, and a second terminal electrode 4 is provided in a region including a surface of the second leg portion 23b and the second ceiling surface 23f. A coil conductor 5 wound around a core portion 21 of the drum type core 2 has both ends 5a and 5b which are led out to the side of the collar portion 23, the one end 5a extends along the first ceiling surface 23e and the other end extends along the second ceiling surface 23f in the void space 23c. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a wire-wound coil component that is surface-mounted on a circuit board and a manufacturing method thereof, and in particular, a terminal electrode provided on a flange portion of a drum-type core and an end portion of a coil conductor are soldered. The present invention relates to a small-sized wire-wound coil component and a manufacturing method thereof.

  Wire-wound coil components are widely used in various electronic devices as inductors and choke coils. As this type of wire-wound coil component, one having a configuration in which a coil conductor is wound around a drum-type core and both ends of the coil conductor and a pair of terminal electrodes provided on the bottom of the core are connected by soldering is widely known. (For example, refer to Patent Document 1).

  FIG. 11 is a cross-sectional view showing a conventional example of such a wire-wound coil component. The winding-type coil component 30 shown in the figure includes a drum core 31 having flange portions 33 and 34 at both ends in the axial direction of the core portion 32 and a pair of flange portions 34 provided on the lower side (mounting surface side) of the drawing. Terminal electrodes 35 and 36 and a coil conductor 37 wound around the core 32, and both ends 37a and 37b of the coil conductor 37 are respectively connected to the corresponding terminal electrodes 35 and 36 by solder 38 (38a, 38b).

  In FIG. 11, the drum core 31 is made of ferrite or the like and is formed into a desired shape by molding or cutting. First to third leg portions 34 a to 34 c are provided at the bottom of the lower flange portion 34 of the drum core 31, and a groove portion 34 d is formed between the first leg portion 34 a and the third leg portion 34 c. In addition to being formed, a groove 34e is formed between the second leg 34b and the third leg 34c. The bottom surfaces of the first to third leg portions 34a to 34c are located in the same plane, and the pair of groove portions 34d and 34e extend substantially in parallel with the third leg portion 34c interposed therebetween. The terminal electrodes 35 and 36 are made of Ag or the like and plated. One terminal electrode 35 is provided so as to cover the surface of the first leg 34a and the inner wall surface of the groove 34d, and the other terminal electrode 36 covers the surface of the second leg 34b and the inner wall surface of the groove 34e. Is provided. The coil conducting wire 37 is covered with insulation except for both end portions 37a and 37b. Both end portions 37a and 37b are led out from the core portion 32 to the bottom portion of the flange portion 34. One end portion 37a is disposed in the groove portion 34d and the other end portion 37b is disposed in the groove portion 34e. The solder 38 is almost filled in the grooves 34d and 34e by the dip soldering method, the terminal electrode 35 and the one end 37a of the coil conductor 37 are connected by the solder 38a in the groove 34d, and the terminal is connected by the solder 38b in the groove 34e. The electrode 36 and the other end portion 37 b of the coil conducting wire 37 are connected.

  When the winding type coil component 30 configured in this way is surface-mounted on a circuit board (not shown), cream solder is previously applied to a pair of land electrodes of the circuit board, and terminal electrodes are formed on these land electrodes. 35 and 36 are aligned and the wound coil component 30 is mounted. Then, this is heated in a reflow furnace to melt the cream solder, whereby the terminal electrodes 35 and 36 and the corresponding land electrodes can be connected to each other by soldering. Therefore, the wound coil component 30 is electrically connected to the circuit board. And a mechanically connected mounting state.

JP 2009-64894 A

  By the way, in the above-described conventional wire-wound coil component 30, the grooves 34d and 34e of the flange portion 34 are almost filled with solders 38a and 38b, respectively. The wire-wound coil component 30 is heated in a reflow process at the time of mounting. Therefore, there has been a problem that mounting defects are likely to occur when the solders 38a and 38b are remelted and flow out to an undesired region. That is, the solder 38a and 38b remelted in the reflow process flows down onto the circuit board along the third leg 34c separating the grooves 34d and 34e, or the gap between the third leg 34c and the circuit board. There is a risk that the terminal electrodes 35 and 36 may be short-circuited because they may enter and bridge due to the capillary action, and if the third leg 34c is formed narrower as the size is reduced, The risk is further increased. Further, when either one of the solders 38a and 38b remelted in the reflow process flows onto the land electrode of the circuit board, the wound coil component 30 is fixed in an inclined posture on the circuit board. Mounting defects are likely to occur.

  Further, when manufacturing such a conventional wire-wound coil component 30, both end portions 37a and 37b of the coil conducting wire 37 are cut to a predetermined length, and then they are substantially perpendicular to the longitudinal direction of the groove portions 34d and 34e. However, if the depth of the grooves 34d and 34e is larger than the diameter of the coil conductor wire 37, it is difficult to form into a desired shape, resulting in poor assembly workability.

  Therefore, it is conceivable that the depths of the groove portions 34d and 34e are formed to be equal to or smaller than the diameter of the coil conductor 37. However, in this case, the amount of solder adhering to both end portions 37a and 37b of the coil conductor 37 is insufficient. The reliability of conduction with 36 is impaired, and both end portions 37a and 37b are liable to come into contact with the circuit board, which causes another problem that the posture of the wound coil component 30 becomes unstable.

  The present invention has been made in view of the situation of the prior art, and a first object of the present invention is to provide a wound-type coil component that is less likely to cause mounting defects such as a short circuit and an inclination of a posture and has good assembly workability. There is to do. The second object of the present invention is to provide a method for manufacturing such a wire-wound coil component.

  In order to achieve the first object, the present invention provides a drum-type core, a first terminal electrode and a second terminal electrode provided on a flange portion on the mounting surface side of the drum-type core, In a wound-type coil component comprising a coil lead wire wound around a drum core and having both ends soldered to the first and second terminal electrodes, the bottom side is opened in the flange A groove-shaped void, a first leg and a second leg facing each other across the void, and a jetty-like shape dividing the ceiling surface of the void into a first ceiling surface and a second ceiling surface A partition portion is provided, and a predetermined interval is secured between a plane including the bottom surfaces of the first and second leg portions and the partition portion, and the surface of the first leg portion and the first ceiling are provided. The first terminal electrode is provided in a region including a surface, and the region including the surface of the second leg and the second ceiling surface is provided in front of the region. A second terminal electrode provided, the other end one end extends along the first ceiling surface of said coil conductors in cavity has a configuration that extends along the second ceiling surface.

  In the coil-type coil component configured as described above, the first and second leg portions are opposed to each other with a void at the bottom portion of the flange portion on the mounting surface side of the drum core, and the bottom surfaces of both the leg portions are included. A required interval is secured between the flat surface and the partition portion projecting from the ceiling surface of the space, and both ends of the coil conductors extend along the first ceiling surface and the second ceiling surface in the space. Therefore, even if the solder adhered to the first terminal electrode or the second terminal electrode is melted in the reflow process, it is difficult to flow to the partition portion side. Moreover, even if the amount of solder is small, both ends of the coil conductor can be reliably soldered to the corresponding terminal electrodes. Since the molten solder does not easily flow to the partition portion side, there is a low possibility that the molten solders on both sides of the partition portion are bridged, and therefore, the first and second terminal electrodes are short-circuited. Less likely to occur. In addition, since a small amount of solder is required for soldering the coil conductor and the terminal electrode, there is no possibility that a large amount of molten solder flows onto the land electrode of the circuit board. It is also difficult to cause a mounting failure that is fixed in a tilted position. In addition, this wire-wound coil component can be cut and bent at both ends of the coil conductors continuously and efficiently by inserting a jig into the space in the collar at the time of manufacture, greatly increasing assembly workability. Can be improved.

  In said structure, when the protrusion dimension of the partition part with respect to the height position of a 1st and 2nd ceiling surface is below the radial dimension of a coil conducting wire, the both ends of a coil conducting wire follow a 1st ceiling surface or a 2nd ceiling surface. Forming into a desired shape is preferable because it becomes very easy. However, the bent portions at both ends of the coil conductor are rounded and slightly separated from the first ceiling surface and the second ceiling surface, so that the protruding dimension of the partition is slightly larger than the radial dimension of the coil conductor. It is also possible to form both ends into a desired shape.

  In order to achieve the second object described above, the present invention winds a coil conductor around a core part of a drum-type core, and derives both ends of the coil conductor at a flange part on the mounting surface side of the drum-type core. In the method of manufacturing a wound coil component in which both ends are solder-connected to the first and second terminal electrodes provided on the flange after the cutting and bending are performed, the flange has a bottom surface A groove-like space having an open side, first and second leg portions facing each other across the space, and a ceiling surface of the space are divided into a first ceiling surface and a second ceiling surface. A drum-type core having a jetty-like partition portion and having a required space between a plane including the bottom surfaces of the first and second leg portions and the partition portion; Providing the first terminal electrode in a region including the surface of the part and the first ceiling surface, After providing the second terminal electrode in a region including the surface of the two leg portions and the second ceiling surface, both end portions of the coil wire wound around the core portion are led out to the flange portion side, By restricting the positions of both ends with a first jig and cutting to a predetermined length with a second jig, and bending the both ends while inserting the first jig into the cavity, In the space, one end of the coil conductor is formed in a shape along the first ceiling surface, and the other end is formed in a shape along the second ceiling surface.

  In this way, the first and second legs are opposed to each other with the void at the bottom of the flange portion on the mounting surface side of the drum core, and the plane including the bottom surface of both legs and the ceiling surface of the void If the required spacing is secured between the projecting partition and the coil conductor is wound around the core of the drum core, both ends of the coil conductor led to the flange side are formed. When this is done, a bending jig (first jig) can be inserted into the space in the flange, so that both ends of the coil conductor can be easily formed into a desired shape along the first ceiling surface or the second ceiling surface. Can be folded. Moreover, both ends of the coil conductor can be cut to a predetermined length with another jig (second jig) such as a wire cutter while the positions of both ends of the coil conductor are regulated by the first jig. As a result, cutting and bending can be performed continuously and efficiently, and assembly workability is greatly improved. In addition, the partition portion separates the first ceiling surface and the second ceiling surface, the first terminal electrode is provided in a region including the surface of the first leg portion and the first ceiling surface, and the second leg portion When the second terminal electrode is provided in a region including the surface and the second ceiling surface, even if the solder attached to the first terminal electrode or the second terminal electrode is melted in the reflow process at the time of mounting, the partition Since it becomes difficult to flow to the part side, the mounting defect that the first and second terminal electrodes are short-circuited hardly occurs. In addition, since both ends of the coil conductor can be securely connected to the corresponding terminal electrodes with a small amount of solder, there is no possibility that a large amount of molten solder will flow onto the land electrodes of the circuit board. The mounting defect that the wire-wound coil component is fixed in an inclined posture is less likely to occur.

  The wire-wound coil component of the present invention is difficult to flow to the partition portion side even if the solder adhered to the first terminal electrode or the second terminal electrode melts in the reflow process at the time of mounting. The mounting failure that the two terminal electrodes are short-circuited is less likely to occur. In addition, since both ends of the coil conductor can be securely connected to the corresponding terminal electrodes with a small amount of solder, there is no possibility that a large amount of molten solder will flow onto the land electrodes of the circuit board. The mounting defect that the wire-wound coil component is fixed in an inclined posture is less likely to occur. In addition, this wire-wound coil component can be cut and bent at both ends of the coil conductors continuously and efficiently by inserting a jig into the space in the collar at the time of manufacture, greatly increasing assembly workability. Can be improved.

  The method for manufacturing a wire-wound coil component according to the present invention is such that, after the coil conductor is wound around the core portion of the drum-type core, when forming both ends of the coil conductor led to the flange portion side, Since the 1st jig | tool can be inserted, the both ends of a coil conducting wire can be easily bend | folded in the desired shape in alignment with a 1st ceiling surface or a 2nd ceiling surface. In addition, since both ends of the coil conductor can be cut to a predetermined length with the second jig while the positions of both ends of the coil conductor are regulated by the first jig, the cutting process and the bending process are continuously performed. As a result, the assembly workability can be greatly improved. Also, even if the solder adhered to the first terminal electrode or the second terminal electrode melts in the reflow process at the time of mounting, it is difficult for the solder to flow to the partition portion side, so the first and second terminal electrodes are short-circuited. Mounting defects are less likely to occur. In addition, since both ends of the coil conductor can be securely connected to the corresponding terminal electrodes with a small amount of solder, there is no possibility that a large amount of molten solder will flow onto the land electrodes of the circuit board. The mounting defect that the wire-wound coil component is fixed in an inclined posture is less likely to occur.

It is a front view of the winding type coil component which concerns on the example of embodiment of this invention. It is a side view of this winding type coil component. It is a bottom view of this winding type coil component. It is a top view of this winding type coil component. It is explanatory drawing at the time of mounting this winding type coil component on a circuit board. It is a front view of the drum type core used with this winding type coil component. It is explanatory drawing which shows the terminal electrode formation process at the time of manufacture of this winding type coil components. It is explanatory drawing which shows the conducting-wire end part cutting process at the time of manufacture of this winding type | mold coil component. It is explanatory drawing which shows the conducting wire end part bending process at the time of manufacture of this winding type coil component. It is explanatory drawing which shows the solder dipping process at the time of manufacture of this winding type | mold coil component. It is sectional drawing of the winding type coil component which concerns on a prior art example.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIGS. 1 to 4 show the appearance of a wire-wound coil component 1 according to this embodiment. The coiled coil component 1 includes a drum core 2 having flanges 22 and 23 at both ends in the axial direction of the core 21 and first and second flanges 23 provided on the mounting surface side of the drum core 2. The second terminal electrodes 3, 4 and the coil conductor 5 wound around the core portion 21 of the drum core 2 are provided, and both end portions 5 a, 5 b of the coil conductor 5 and the terminal electrodes 3, 4 are provided. Are connected by solder 6 (6a, 6b). Further, as shown in FIG. 5, the wound coil component 1 is used by being surface-mounted on a circuit board 7.

  The drum core 2 is made of ferrite or the like, and is formed into a desired shape as shown in FIG. 6 by molding or cutting. At the bottom of the flange portion 23 on the mounting surface side of the drum core 2, there are a first leg portion 23a and a second leg portion 23b that face each other across the groove-like space 23c, and a jetty at the center of the ceiling surface of the space 23c. A partition portion 23d formed as a portion is provided. The first leg portion 23a and the second leg portion 23b extend substantially in parallel. The space 23c has an opening on the bottom surface side, and a partition portion 23d that slightly protrudes into the space 23c separates the first ceiling surface 23e and the second ceiling surface 23f. That is, the ceiling surface of the space 23c is divided into the first ceiling surface 23e and the second ceiling surface 23f by the partition portion 23d. However, as shown in FIG. 6, the protruding dimension t of the partition part 23d with respect to the height positions of the first and second ceiling surfaces 23e, 23f is equal to or less than the radial dimension of the coil conductor 5, and the first and second leg parts 23a. , 23b, a required distance h is ensured between the plane including the bottom surface (indicated by a two-dot chain line P in the figure) and the partition 23d. The flange portion 23 is formed in a table shape having a constant width, while the other flange portion 22 is formed in a disk shape, and the winding core portion 21 is formed in a columnar shape.

  The first and second terminal electrodes 3 and 4 are formed by applying an Ag paste to the brim portion 23 and firing it, and the surface thereof is plated with Ni and Sn. The first terminal electrode 3 is provided so as to cover the surface of the first leg portion 23a and the first ceiling surface 23e, and the second terminal electrode 4 is provided on the surface of the second leg portion 23b and the second ceiling surface 23f. And so as to cover.

  The coil conducting wire 5 is insulated and coated except for both end portions 5a and 5b. Both end portions 5a and 5b are led out from the core portion 21 to the bottom portion of the flange portion 23. One end portion 5a extends along the first ceiling surface 23e in the space 23c, and the other end portion 5b. Extends along the second ceiling surface 23f in the void 23c. As will be described later, these both end portions 5a and 5b are predetermined by performing cutting and bending continuously using a wire presser (first jig) 11 and a wire cutter (second jig) 12. It is cut into lengths and formed into a desired shape.

  The solder 6 (6a, 6b) is attached to the bottom of the flange 23 by dip soldering, and both ends 5a, 5b of the coil conductor 5 are soldered to the corresponding terminal electrodes 3, 4. That is, the first terminal electrode 3 and one end 5a of the coil conductor 5 are connected by the solder 6a, and the second terminal electrode 4 and the other end 5b of the coil conductor 5 are connected by the solder 6b. .

  Next, a method for manufacturing the wire-wound coil component 1 according to this embodiment will be described. First, the drum core 2 having a shape as shown in FIG. 6 is prepared, and the Ag paste is transferred to the first and second ceiling surfaces 23 e and 23 f of the flange 23 of the drum core 2. In this transfer step, Ag paste is applied in advance to a transfer pad (handker) 13 indicated by a chain line in FIG. 6 with a roller or the like (not shown), and the transfer pad 13 is attached to the first and second ceilings of the flange 23. By pressing the surfaces 23e and 23f, electrode paste layers 3a and 4a as shown in FIG. 7 are formed.

  Next, the bottom of the flange 23 of the drum core 2 is dipped in the Ag paste 17 in the Ag bath 14 shown in FIG. 7 to form an electrode paste layer on the surfaces of the first and second legs 23a and 23b. . At this time, since the partition portion 23d of the flange portion 23 is mounted on the receiving portion 14a of the Ag bathtub 14, there is no possibility that the Ag paste 17 is applied to the bottom surface of the partition portion 23d. The electrode paste layer formed on the surface of the first leg 23a overlaps the electrode paste layer 3a covering the first ceiling surface 23e, and the electrode paste layer formed on the surface of the second leg 23b is the first. 2 It overlaps with the electrode paste layer 4a covering the ceiling surface 23f.

  Thereafter, the drum core 2 on which the electrode paste layers 3a, 3b and the like are formed is dried and fired. Thereby, the first terminal electrode 3 and the second terminal electrode 4 separated by the partition portion 23d are formed on the bottom portion of the flange portion 23 of the drum core 2. Then, Ni plating and Sn plating are sequentially applied to the first and second terminal electrodes 3 and 4.

  Next, the coil conductor 5 is wound around the core portion 21 of the drum core 2 by a predetermined number of turns. And after peeling the film of the both ends 5a and 5b of the coil conducting wire 5 after winding, as shown in FIG. 8, it cuts in the state which led these both ends 5a and 5b to the collar part 23 side. . In this cutting process, both ends 5 a and 5 b whose positions are regulated by the wire presser 11 are cut to a predetermined length by the wire cutter 12. Further, following this cutting process, as shown in FIG. 9, by inserting the wire presser 11 into the space 23c of the flange 23, the both ends 5a and 5b after cutting are connected to the first ceiling surface 23e and the first (2) Bending is performed by bending at substantially right angles along the ceiling surface 23f. That is, the wire presser 11 inserted into the space 23c presses the one end portion 5a of the coil conducting wire 5 against the first ceiling surface 23e and the other end portion 5b of the coil conducting wire 5 against the second ceiling surface 23f. These both ends 5a and 5b can be formed into a desired shape.

  Next, after flux is applied to the bottom of the flange 23 of the drum core 2, the bottom of the flange 23 is dipped in the molten solder 18 in the solder bath 15 as shown in FIG. As a result, the molten solder 18 is attached to both end portions 5a, 5b of the coil conductor 5 and the first and second terminal electrodes 3, 4. As a result, the molten solder 18 adhering to the bottom of the flange 23 of the drum-type core 2 is solidified to become the solder 6 (6a, 6b) shown in FIGS. 1 and 5, so that the coil conductor 5 in the space 23c. One end portion 5a of the coil and the first terminal electrode 3 are connected by the solder 6a, and the other end portion 5b of the coil conductor 5 and the second terminal electrode 4 are connected by the solder 6b. Is completed.

  When surface-mounting the coiled coil component 1 thus manufactured on the circuit board 7, as shown in FIG. 5, the cream solder 16 is previously applied to the pair of land electrodes 8 and 9 of the circuit board 7. The wire-wound coil component 1 is mounted with the first and second terminal electrodes 3 and 4 aligned on the land electrodes 8 and 9. Then, by winding the coiled coil component 1 mounted on the circuit board 7 in a reflow furnace to melt the cream solder 16, the first terminal electrode 3 and the land electrode 8 are solder-connected, and the first Since the terminal electrode 4 of 2 and the land electrode 9 are solder-connected, the wound coil component 1 is mounted on the circuit board 7 electrically and mechanically.

  As described above, in the coiled coil component 1 according to this embodiment, the first and second leg portions 23a and 23b sandwich the void 23c at the bottom of the flange portion 23 on the mounting surface side of the drum core 2. The required distance h is ensured between the plane including the bottom surfaces of both the leg portions 23a and 23b and the partition portion 23d projecting from the ceiling surface of the space 23c. Both end portions 5a and 5b are arranged along the first ceiling surface 23e and the second ceiling surface 23f in the space 23c. That is, the groove shape surrounded by the first leg portion 23a, the first ceiling surface 23e, and the partition portion 23d is deeper on the first leg portion 23a side than the partition portion 23d side, and similarly, the second leg portion 23b. The groove shape surrounded by the second ceiling surface 23f and the partition portion 23d is deeper on the second leg portion 23b side than the partition portion 23d side. Therefore, even if the solder 6 (6a, 6b) adhered to the first terminal electrode 3 or the second terminal electrode 4 in these grooves is melted in the reflow process at the time of mounting, the melted solder 6 (6a, 6b) ) Is pulled toward the first and second leg portions 23a and 23b having the deeper groove depth and is less likely to flow toward the partition portion 23d. Further, even if the amount of the solder 6 (6a, 6b) is small, both ends 5a, 5b of the coil conductor 5 can be securely soldered to the corresponding terminal electrodes 3, 4. Since the molten solder 6 does not easily flow to the partition portion 2d side, the possibility that the molten solders 6a and 6b on both sides of the partition portion 2d are bridged is low. Therefore, the first and second terminal electrodes 3 , 4 is less likely to cause a mounting failure in which the two are short-circuited. In addition, since a small amount of solder is required for soldering both ends 5a and 5b of the coil conductor 5 to the corresponding terminal electrodes 3 and 4, solder on the land electrodes 8 and 9 of the circuit board 7 is melted. There is no risk that 6 will flow in a large amount, and therefore, the mounting defect that the wound coil component 1 is fixed in an inclined posture on the circuit board 7 is less likely to occur.

  Further, in the present embodiment example, the coil conductor 5 is wound around the core portion 21 of the drum core 2 in the manufacturing process of the wire-wound coil component 1, and then the both ends of the coil conductor 5 led to the flange portion 23 side. Since the wire presser (first jig) 11 can be inserted into the space 23c of the flange 23 when forming the portions 5a and 5b, the both ends 5a and 5b are connected to the first ceiling surface 23e and the second ceiling surface. It can be easily folded into a desired shape along 23f. In addition, the wire clamp (second jig) 12 can cut the both ends 5a and 5b to a predetermined length while the positions of both ends 5a and 5b of the coil conductor 5 are regulated by the wire presser 11. As a result, cutting and bending can be performed continuously and efficiently, and assembly workability is greatly improved.

  In the above embodiment example, the protrusion dimension t of the partition part 23d with respect to the height position of the first and second ceiling surfaces 23e and 23f of the flange part 23 is set to be equal to or less than the radial dimension of the coil conductor wire 5. It is very easy to form both end portions 5a and 5b of the coil conductor 5 into a desired shape along the first ceiling surface 23e and the second ceiling surface 23f. However, since the bent portions of the both end portions 5a and 5b are rounded and slightly separated from the first ceiling surface 23e and the second ceiling surface 23f, the protruding dimension t of the partition portion 23d is the diameter dimension of the coil conductor 5. It is possible to form both end portions 5a and 5b into a desired shape even if they are slightly larger.

DESCRIPTION OF SYMBOLS 1 Winding type coil components 2 Drum type core 3 1st terminal electrode 4 2nd terminal electrode 5 Coil conductor 5a, 5b (coil conductor) end 6 (6a, 6b) Solder 7 Circuit board 8, 9 Land electrode 11 Wire presser (first jig)
12 Wire cutter (second jig)
13 Transfer pad 14 Ag bath 15 Solder tank 21 Core portion 22, 23 ridge portion 23a First leg portion 23b Second leg portion 23c Empty space 23d Partition portion 23e First ceiling surface 23f Second ceiling surface

Claims (3)

The drum-type core, the first terminal electrode and the second terminal electrode provided on the flange portion on the mounting surface side of the drum-type core, and the both ends of the drum-type core wound around the core part of the drum-type core In a coiled coil component comprising coil conductors soldered to first and second terminal electrodes,
A groove-like space having an opening on the bottom surface side, a first leg portion and a second leg portion that are opposed to each other with the space interposed therebetween, and a ceiling surface of the space is defined as a first ceiling surface and a second ceiling surface. A jetty-shaped partition part that is divided into a ceiling surface, a required space is ensured between the partition part and a plane including the bottom surfaces of the first and second leg parts, and the first Providing the first terminal electrode in a region including the surface of the leg portion and the first ceiling surface, and providing the second terminal electrode in a region including the surface of the second leg portion and the second ceiling surface; One end of the coil conductor wire extends along the first ceiling surface and the other end portion extends along the second ceiling surface in the space, and the winding type coil component is characterized in that .   2. The wire-wound coil component according to claim 1, wherein a protruding dimension of the partition portion with respect to a height position of the first and second ceiling surfaces is equal to or less than a diameter dimension of the coil conductor. The coil conductor is wound around the core of the drum core, and both ends of the coil conductor are led to the flange on the mounting surface side of the drum core, and after cutting and bending, the both ends are In the method of manufacturing a wound coil component that is solder-connected to the first and second terminal electrodes provided on the flange,
The flange has a groove-like space having an opening on the bottom surface side, first and second leg portions opposed to each other with the space interposed therebetween, and the ceiling surface of the space has a first ceiling surface and a second ceiling surface. A drum-type core having a jetty-like partition portion that is divided into a ceiling surface and having a required space between the plane including the bottom surfaces of the first and second leg portions and the partition portion is prepared And
The first terminal electrode is provided in a region including the surface of the first leg and the first ceiling surface, and the second terminal electrode is provided in a region including the surface of the second leg and the second ceiling surface. After providing
Both ends of the coil conducting wire wound around the winding core are led out to the flange side, the positions of both ends are regulated by a first jig and cut to a predetermined length by a second jig. In addition, by bending the both end portions while inserting the first jig into the space, one end of the coil conductor is formed into a shape along the first ceiling surface in the space, and the other end. Is formed into a shape along the second ceiling surface. A method for manufacturing a wire-wound coil component.

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