JP4747667B2 - Wire-wound coil parts - Google Patents

Description

  The present invention relates to a wire-wound coil component formed by winding a plurality of coil windings around a winding body.

  FIG. 4 is a schematic perspective view showing an example of a wound-type coil component (see, for example, Patent Document 1). This winding type coil component 30 includes a plurality of coil windings 31 (31A, 31B) formed by applying an insulating coating to conductor wires, a winding body portion 32 around which the coil windings 31A, 31B are formed, It has a flange portion 33 (33A, 33B) provided on both ends of the winding drum portion 32.

  In the configuration of the coiled coil component 30, a part of the flange part 33A constitutes a leg part 34 (34a, 34b), and similarly, a part of the collar part 33B constitutes a leg part 35 (35a, 35b). is doing. These leg portions 34 (34a, 34b), 35 (35a, 35b) are formed in a manner in which the positions of the projecting tip surfaces are aligned in the same projecting direction from the peripheral surface of the winding drum portion 32, and each leg portion is formed. Electrodes 36 are formed on the projecting tip surfaces of 34 and 35, respectively. One end side of the winding drum portion 32 (for example, the side on which the leg portion 34 is provided) forms the winding start end side, and the other end side of the winding drum portion 32 (for example, the side on which the leg portion 35 is provided). Is the end of the winding.

  The winding start end sides of the coil windings 31A and 31B are drawn out from the winding drum 32 to the electrodes 36 on the protruding tip surfaces of the leg portions 34a and 34b on the winding start end side of the winding drum portion 32, respectively. The conductor wire portion of the corresponding coil winding 31A or 31B is bonded and fixed. Further, the winding end portions of the coil windings 31A and 31B are drawn out from the winding drum portion 32 to the electrodes 36 on the projecting tip surfaces of the leg portions 35a and 35b on the winding end tip side of the winding drum portion 32, respectively. The conductor wire portions of the coil windings 31A or 31B corresponding individually are bonded and fixed.

JP 2000-208331 A JP 2004-31560 A

  4 is, for example, a common mode choke coil component, and the winding coil component 30 is formed on, for example, a circuit board as shown in the model diagram of FIG. 5A, for example. It is interposed in the balanced line 41. That is, the balanced line 41 is provided with a dividing portion 42 as shown in the schematic exploded view of FIG. The wound-type coil component 30 has a posture in which the electrodes 36 of the legs 34 and 35 are directed toward the balanced line 41, and the leg portions 34 and 35 corresponding to the line portions on both ends of the dividing part 42 of the balanced line 41, respectively. 35 electrodes 36 are joined by, for example, solder 38 and interposed in the balanced line 41. Thus, the common mode choke coil composed of the coil windings 31 </ b> A and 31 </ b> B is electrically balanced by the electrodes 36 of the winding coil component 30 being joined and electrically connected to the balanced line 41 by, for example, solder 38. It is interposed in the track 41.

  By the way, in the manufacturing process of the wire-wound coil component 30, for example, an operation of joining and fixing the winding start end side and the winding end end side of the coil windings 31 </ b> A and 31 </ b> B to the corresponding electrodes 36 of the leg portions 34 and 35 is described below. To be done. For example, the winding start end side and the winding end end side of the coil windings 31 </ b> A and 31 </ b> B wound around the winding drum portion 32 are respectively directed from the winding drum portion 32 to the electrodes 36 of the corresponding leg portions 34 and 35. Pull straight out while applying tension. An example of the arrangement relationship between the leg portions 34 and 35 and the winding start end side and the winding end end side of the coil windings 31A and 31B at this time is shown in the schematic plan view of FIG.

  Then, thereafter, the lead wires on the winding start end side and the winding end end side of the coil windings 31A and 31B are joined and fixed to the electrode 36 by, for example, a thermocompression bonding method. That is, as shown in the schematic model diagram of FIG. 6B, for example, a heating iron 37 is pressed against the electrode 36 on which the lead wires of the coil windings 31 (31A, 31B) are placed. The insulation coating of the coil winding 31 is melted by the heat of the coil 37, and the electrode 36 and the conductor wire of the coil winding 31 are melted to join the electrode 36 and the conductor wire of the coil winding 31. Then, after the conductor wires of the electrode 36 and the coil winding 31 are cooled and hardened, as shown in FIG. 6C, the coil winding 31 on the outer side than the portion bonded and fixed to the electrode 36 is removed. To do.

  In this manner, the winding start end side and the winding end end side of the coil winding 31 are bonded and fixed to the electrodes 36 of the corresponding leg portions 34 and 35, respectively.

  In the process of joining and fixing the coil winding 31 to the electrode 36 as described above, from the insulating coating portion of the coil winding 31 disposed at the edge portion on the fillet forming side of the electrode 36 and the fillet forming side of the electrode 36 As shown in the model diagram of FIG. 7 (a), the insulation coating portion of the coil winding 31 protruding outward is melted by the heat of the heating iron 37 to become liquid or gaseous. In some cases, it may be attached to the end face of the electrode 36 on the outer end face side of the portion 32.

  As described above, the insulating coating (that is, the insulating foreign matter) attached to the end face of the electrode 36 is very troublesome and difficult to remove from the end face of the electrode 36. The foreign matter was not removed but remained attached. Thus, when the insulation foreign material has adhered to the end surface of the electrode 36, the problem of the mounting defect that the winding type coil component 30 cannot be satisfactorily joined (mounted) to the balanced line 41 is likely to occur. That is, in the process of mounting the coiled coil component 30 on the balanced line 41 with, for example, the solder 38, for example, the coiled mold with the solder 38 interposed between the electrode 36 of the coiled coil component 30 and the balanced line 41. The coil component 30 is placed at the joint position where the balanced line 41 is set. Thereafter, the solder 38 is melted by heating, and the solder 38 is bonded to the electrode 36 and the balanced line 41 of the wound coil component 30, and the wound coil component 30 is mounted on the balanced line 41. When the solder 38 is melted, a part of the melted solder 38 wets the end face of the electrode 36 to form a fillet 43 as shown in the sectional view of FIG. By forming the fillet 43, the wire-wound coil component 30 can be firmly joined to the balanced line 41.

  However, as shown in FIG. 7B, when the insulating foreign matter 44 resulting from the insulation coating of the coil winding 31 adheres to the end face of the electrode 36, the molten solder 38 wets the end face of the electrode 36. This causes a problem that a good fillet 43 cannot be formed. Due to such a defect of the fillet 43, a mounting defect of the wire-wound coil component 30 is likely to occur.

  The present invention has been made to solve the above-mentioned problems, and its object is to provide a wire-wound coil component that can easily reduce the incidence of mounting defects of wire-wound coil components while suppressing an increase in manufacturing cost. There is to do.

In order to achieve the above object, the present invention has the following configuration as means for solving the above problems. That is, the present invention has a plurality of coil windings formed by coating a conductor wire, and a winding drum portion around which the plurality of coil windings are wound , and one end in the longitudinal direction of the winding drum portion. The side is formed as a common winding start end side, the other end side in the longitudinal direction of the winding body portion is formed as a common winding end end side, and at both ends in the longitudinal direction of the winding body portion, The same number of coil windings as a plurality of leg portions protruding from the circumferential surface of the winding body portion in the same protruding direction with the position of the protruding tip surface aligned are arranged in the circumferential direction of the winding body portion with an interval. All the leg portions have a shape having a fillet forming side on the outer end surface side in the longitudinal direction of the winding drum portion, and the winding start end sides of all the coil windings are respectively wound around the winding drum portion. from the beginning end side, projecting destination of the legs of different individually corresponding to the winding start end side It is drawn linearly toward the external connection electrode provided on the surface and bonded and fixed to the external connection electrode surface, and the winding end ends of all the coil windings are respectively wound around the winding body portion. From the end end side, it is drawn out linearly toward the external connection electrode provided on the protruding tip end surface of the leg portion on the winding end end side that corresponds to each other individually, and is fixedly bonded to the electrode surface for external connection. All coil windings drawn from the winding start end side and the winding end end side were removed from the outer fixed electrode position after being fixed to the external connection electrode surface. forms and embodiments, the wound and the body winding start end side, the fillet forming the sides of the nearest leg windings drawn position in each of the end side winding end is wound torso coil wire winding center Connect to the end near the shaft. Nakatto sides are formed, the lead wire of the coil windings joined and fixed to the external connection electrodes which are the closest leg to the winding draw-out position, the virtual from the site which is fixedly joined to the electrode for external connection A virtual extension line from the part where the extension line passes through the corner cut side and avoids the fillet forming side and the lead wire of the remaining coil winding is joined and fixed to the external connection electrode is the fillet forming side It is characterized by being arranged in a position that avoids .

  According to the present invention, the coil winding lead wire bonded and fixed to the external connection electrode of the leg portion provided with the corner cut side closest to the winding lead position is the virtual extension line of the lead wire. It was set as the structure arrange | positioned in the position which avoided the fillet formation side in the direction which passes a corner cut side. For this reason, in the step of joining and fixing the coil winding formed around the winding drum portion to the external connection electrode surface of the leg portion, the winding winding portion was individually handled from the winding start end side and the winding end end side. The lead wire of the coil winding drawn out linearly toward the external connection electrode on the protruding tip surface of the leg can be in a state that does not pass through the fillet forming side. As a result, when the insulation coating of the coil winding is melted by the heat of the heating iron, for example, by pressing a heating iron etc. against the external connection electrode surface on which the lead wire of the coil winding is arranged, the coil Since the winding does not pass through the fillet forming side, it is possible to avoid a situation where the melted insulating coating of the coil winding adheres to the fillet forming side.

  As a result, problems caused by the fact that the insulation coating adheres to the fillet forming side, that is, the problem of poor mounting of the wire-wound coil component can be prevented, and the reliability of the wire-wound coil component can be improved. Can do.

  Further, according to the present invention, the coil winding winding center of the winding body portion is provided on the fillet forming side of the leg portion closest to the winding drawing position on each of the winding start end side and the winding end end side of the winding body portion. A corner cut side is formed at the end closest to the axis, and the lead wire of the coil winding is arranged in a direction in which the virtual extension line passes through the corner cut side. For this reason, in the process of bonding and fixing the coil winding wound around the winding body to the external connection electrode surface of the leg, the coil winding is arranged so that the virtual extension line passes through the corner cut side. The line can stabilize the arrangement state on the external connection electrode surface when the extraction line is drawn out on the external connection electrode surface. As described above, the joining operation of the coil winding lead wire and the external connection electrode surface is performed in a state where the arrangement position of the coil winding lead wire on the external connection electrode surface is stable. The lead wire and the external connection electrode can be bonded well with high bonding strength. Thereby, the reliability of the electrical connection of the wire-wound coil component can be improved.

  Furthermore, all the leg portions arranged and arranged on the winding start end side of the winding body portion and all the leg portions arranged and arranged on the winding end end side are arranged and shaped on the winding start end side. And a winding end end side, and a configuration that is symmetric with respect to a symmetry plane that passes through the winding center axis of the coil winding of the winding body and is orthogonal to the arrangement direction of the legs. Thus, for example, in the manufacturing process of a wound-type coil component, any one of both end sides of the winding body portion may be the winding start end side of the coil winding, and the coil winding can be performed without worrying about the direction of the winding body portion. The wire can be wound around the winding body.

  For external connection of all the legs on the winding start end side of the winding body when the external connection electrodes on the tip side of all the legs of the coiled coil parts are joined to the connection partner by soldering, for example. The amount of solder formed on each electrode and the amount of solder formed on each external connection electrode on the end of the winding end can be made symmetrical on the winding start end and winding end end. Moreover, it can be made symmetrical with respect to a symmetry plane that passes through the winding central axis of the coil winding of the winding drum portion and is orthogonal to the arrangement direction of the leg portions. As a result, the wire-wound coil component can be bonded and fixed to the connection partner in a balanced and stable manner.

  Embodiments according to the present invention will be described below with reference to the drawings.

  FIG. 1A is a plan view showing characteristic components of the wire-wound coil component of the first embodiment, and FIG. 1B is a schematic view of the wire-wound coil component of the first embodiment. A perspective view is shown.

  The wire-wound coil component 1 of the first embodiment is a common mode choke coil component, and the wire-wound coil component 1 includes a plurality (two in the first embodiment) in which conductor wires are covered. It has a coil winding 2 (2A, 2B) and a winding body portion 3 around which the plurality of coil windings 2A, 2B are formed. One end side of the winding drum portion 3 (here, for convenience of explanation, the right end portion in FIG. 1) is a winding start end side common to the plurality of coil windings 2A and 2B. The other end side (for example, the left end portion in FIG. 1) forms a winding end end side common to the plurality of coil windings 2A and 2B. Two leg portions 4 and 5 are provided on both ends of the winding drum portion 3, respectively, which are the same as the number of the coil windings 2. A plurality of leg portions 4 (4A, 4B) provided on one end side of the winding drum portion 3 are formed so as to protrude from the peripheral surface of the winding drum portion 3 in the same protruding direction with the position of the protruding tip surface aligned. The leg portions 4 </ b> A and 4 </ b> B are arrayed in the circumferential direction of the winding drum portion 3 with an interval. The plurality of leg portions 5 (5A, 5B) provided on the other end side of the winding drum portion 3 are also provided on the leading end surface protruding in the same protruding direction from the peripheral surface of the winding drum portion 3 in the same manner as the leg portion 4. The plurality of leg portions 5A and 5B are formed so as to protrude in the same position and are arranged in the circumferential direction of the winding drum portion 3 with an interval.

  Further, external connection electrodes 6 are provided on the protruding front end surfaces of the leg portions 4A, 4B, 5A, 5B, respectively. Each of the external connection electrodes 6 is joined and fixed to a lead wire of a separate coil winding 2 drawn from the winding body 3.

  In the first embodiment, the sides 4Af, 4Bf, 5Af, and 5Bf, which are the outer end face sides of all the leg portions 4A, 4B, 5A, and 5B, each form a fillet forming side. In each of these fillet forming sides 4Af, 4Bf, 5Af, 5Bf, a corner cut side 8 is formed at the end of the winding body 3 on the side close to the coil winding winding central axis O. In other words, in the first embodiment, the leg portions 4A and 4B arranged on the winding start end side of the winding drum portion 3 and the leg portions 5A and 5B arranged on the winding end end side are arranged. The arrangement position and shape are symmetrical on the winding start end side and the winding end end side, and pass through the winding center axis O of the coil winding 2 of the winding body 3 and are orthogonal to the leg arrangement direction. It is symmetric with respect to the symmetry plane.

  In the first embodiment, the winding start end side and the winding end end side of the coil winding 2 (2A, 2B) are for external connection of the leg portions 4, 5 individually corresponding from the winding body portion 3, respectively. It is drawn out linearly toward the electrode 6 and bonded and fixed to the external connection electrode 6. The lead lines of all such coil windings 2 are arranged at positions where virtual extension lines of the lead lines (see dotted line S in FIG. 2) pass through the fillet forming sides 4Af, 4Bf, 5Af, 5Bf. Yes. In addition, for the lead wire of the coil winding 2 that is bonded and fixed to the external connection electrode 6 of the leg portions 4A and 5B closest to the lead position P of the coil winding 2, the virtual extension line S of the lead wire is a corner cut. It is arranged at a position passing through the substantially central part of the side 8.

  That is, the virtual extension line S of the lead wire of the coil winding 2 is used for the external connection electrodes of the legs 4 and 5 by, for example, thermocompression bonding or the like in the manufacturing process of the coiled coil component 1. This is equivalent to the lead wire portion that is removed after being joined and fixed to 6. From this, in the manufacturing process of the wound-type coil component 1, the coil winding 2 is wound around the winding drum portion 3, and the external connection electrodes 6 of the leg portions 4, 5 corresponding respectively from the winding drum portion 3. When the coil windings 2 are linearly drawn toward the front, the lead wires of all the coil windings 2 are arranged at positions avoiding the fillet forming sides 4Af, 4Bf, 5Af, 5Bf of the leg portions 4, 5. Will be. For this reason, in the process of joining and fixing the lead wires of the coil windings 2 arranged in this way to the external connection electrode 6 by, for example, a thermocompression bonding method, all the lead wires of the coil windings 2 pass through the fillet forming side. Therefore, it is possible to prevent the insulating coating melted by heating the coil winding 2 from adhering to the fillet forming sides 4Af, 4Bf, 5Af, and 5Bf of the leg portions 4 and 5.

  As described above, in the configuration of the first embodiment, since the insulating coating is not attached to the fillet forming sides 4Af, 4Bf, 5Af, and 5Bf, the insulating coating is attached to the fillet forming sides 4Af, 4Bf, 5Af, and 5Bf. (In other words, since the insulation coating is attached to the fillet forming sides 4Af, 4Bf, 5Af, and 5Bf, there is a solder fillet for joining (mounting) the coiled coil component 1 to the connection partner. The formation failure of the solder fillet that cannot be formed satisfactorily occurs, thereby avoiding the occurrence of the problem that the reliability of the winding type coil component 1 is lowered.

  In the first embodiment, the lead wire of the coil winding 2 that is bonded and fixed to the external connection electrode 6 of the leg portions 4A and 5B closest to the lead position P of the coil winding 2 is the lead wire. Since the virtual extension line S is arranged at a position passing through the corner cut sides 8 of the legs 4 and 5, the following effects can be obtained. That is, the lead wire of the coil winding 2 bonded and fixed to the external connection electrode 6 of the leg 4A, 5B closest to the lead position P of the coil winding 2 is in the lead-out direction with respect to the winding direction of the coil winding 2. The inclination angle (lead-out angle) θ is larger than the lead-out angle θ ′ in the lead-out line of the coil winding 2 that is bonded and fixed to the external connection electrodes 6 of the legs 4B and 5A on the side far from the winding lead-out position P. . For this reason, a large force acts to direct the lead wire of the coil winding 2 in the winding direction. Thereby, when the corner cut edge 8 is not provided, the coil winding 2 is drawn from the winding body 3 toward the external connection electrodes 6 of the legs 4 and 5 and then the lead wire is used for external connection. The lead wire of the coil winding 2 to be joined and fixed to the external connection electrode 6 of the leg portions 4A and 5B closest to the lead position P of the coil winding 2 before being fixed to the electrode 6 is unstable. It tends to be misaligned. For this reason, since it is necessary to perform the joining and fixing operation of the lead wire and the external connection electrode 6 while preventing the displacement of the lead wire of the coil winding 2, the lead wire of the coil winding 2 is connected to the outside. There arises a problem that the work of bonding and fixing to the connection electrode 6 tends to be complicated.

  On the other hand, in the first embodiment, a coil winding provided with a corner cut side 8 and bonded and fixed to the external connection electrodes 6 of the leg portions 4A and 5B closest to the drawing position P of the coil winding 2 is provided. Since the two lead lines are arranged so as to pass through the corner cut side 8, even if the lead line moves and the position shifts, the position shift can be suppressed within the range of the corner cut side 8. . Thereby, it is possible to easily suppress the positional deviation of the lead wire of the coil winding 2 that is bonded and fixed to the external connection electrode 6 of the leg portions 4A and 5B closest to the lead position P of the coil winding 2. Become. For this reason, it is possible to reduce the labor of joining process of the lead wire to the external connection electrode 6.

  The second embodiment will be described below. In the description of the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and duplicate descriptions of common portions are omitted.

  Characteristic components of the wound coil component 1 of the second embodiment are shown in the schematic plan view of FIG. In the second embodiment, three coil windings 2 (2A, 2B, 2C) are wound around the winding body 3 of the winding coil component 1. Further, at the both end sides of the winding drum portion 3, the same number (that is, three) as the number of the coil windings 2 is provided, and the leg portions 4 (4A, 4B, 4C), 5 (5A, 5B, 5C). Projectingly formed. These leg portions 4 (4A, 4B, 4C), 5 (5A, 5B, 5C) are in the same protruding direction from the peripheral surface of the winding drum portion 3 in the same manner as the leg portions 4 and 5 shown in the first embodiment. The protruding tip surface is aligned to the same position. Further, the leg portions 4 (4A, 4B, 4C) are arranged in such a manner that the leg portions 4B are sandwiched between the leg portions 4B with the leg portions 4B being in the center, and the legs 4A, 4B, 4C are spaced in the circumferential direction of the winding drum portion 3. An array is formed through. Similarly, the leg portions 5 (5A, 5B, 5C) are arranged in such a manner that the leg portion 5B is sandwiched between the leg portions 5B with the leg portion 5B in the center, and the winding body portion 3 is spaced in the circumferential direction. An array is formed through.

  In this second embodiment, the sides 4Af, 4Bf, 4Cf, 5Af, 5Bf, 5Cf on the outer end face side of the winding body 3 in the legs 4 (4A, 4B, 4C), 5 (5A, 5B, 5C). Is the fillet forming side. Further, the fillet forming sides 4Af, 4Cf, 5Af, and 5Cf of the legs 4A, 4C, 5A, and 5C are formed with corner cut sides 8 at the ends of the winding body 3 near the coil winding center axis O. Has been. Furthermore, in the second embodiment, the coil winding winding central axis O of the winding body 3 is also provided on the sides of the legs 4A, 4C, 5A, 5C facing the fillet forming sides 4Af, 4Cf, 5Af, 5Cf. A corner cut side 10 is formed at the end near the end. The corner cut side 10 is formed so that the lead wire of the coil winding 2B drawn linearly from the winding body 3 toward the projecting tip surface of the legs 4B and 5B does not interfere with the legs 4A and 5C. The arrangement position of the corner cut side 10 is designed in consideration of the drawing direction of the drawing line of the coil winding 2B.

  In the second embodiment, all the leg portions 4A, 4B, 4C arranged on one end side of the winding drum portion 3 and all the leg portions 5A arranged on the other end side of the winding drum portion 3 are shown. 5B and 5C are arranged symmetrically with respect to one end side and the other end side of the winding drum portion 3, and the leg portions pass through the coil winding winding central axis O of the winding drum portion 3. 4A, 4B, and 4C (or 5A, 5B, and 5C) are symmetrical with respect to a symmetry plane orthogonal to the arrangement direction.

  The external connection electrodes 6 are formed on the protruding front end surfaces of the leg portions 4 and 5, and the lead wires of the corresponding coil windings 2 are joined and fixed to the external connection electrodes 6. ing. Also in the second embodiment, as in the first embodiment, as shown in FIG. 3 (b), the lead lines of all the coil windings 2 are provided with virtual extension lines S of the lead lines. From the winding body 3 toward the individually corresponding external connection electrodes 6 so as to avoid the fillet forming sides 4Af, 4Bf, 4Cf, 5Af, 5Bf, 5Cf of the portions 4 and 5 Has been drawn to. In addition, the lead wire of the coil winding 2 joined and fixed to the external connection electrode 6 of the leg portions 4A and 5C closest to the winding lead position is such that the virtual extension line S of the lead wire passes through the corner cut side 8. Is arranged.

  The other configuration of the wire-wound coil component 1 of the second embodiment is the same as that of the first embodiment, and the same effect as that of the first embodiment is obtained in the configuration of the second embodiment. be able to.

  In addition, this invention is not limited to the form of each 1st or 2nd embodiment, Various embodiments can be taken. For example, in the first embodiment, the two coil windings 2 are wound around the winding body 3, and in the second embodiment, the three coil windings 2 are wound around the winding body 3. However, the present invention can also be applied to a wound-type coil component having a configuration in which four or more coil windings are wound around a winding body. In addition, when four or more coil windings are wound around the winding drum portion, four or more legs, that is, at least as many as the number of coil windings are provided on both ends of the winding drum portion, respectively. Several leg portions are formed to protrude.

  In each of the first and second embodiments, all the leg portions 4 arranged on one end side (winding start end side) of the winding drum portion 3 and the other end side of the winding drum portion 3 (winding) The arrangement positions and shapes of all the leg portions 5 arranged on the end end side) are symmetrical on the winding start end side and the winding end end side, and the coil winding of the winding drum portion 3 is performed. For example, as shown in FIG. 1, one end side of the winding body portion 3 is configured to be symmetric with respect to a symmetry plane that passes through the wire winding central axis O and is orthogonal to the arrangement direction of the leg portions. Leg portions 4A and 4B, and leg portions 5A and 5B on the other end side of the winding drum portion 3, respectively, the leg portion 4A closest to the drawing position P of the coil winding 2 is provided. , 5B fillet forming sides 4Af, 5Bf are formed with corner cut sides 8 whereas the leg portions 4B, 5A are filled. Forming side 4Bf, as that is not the corner cutting edges are formed on the 5Af, shape and position of the legs 4, 5 may not form a symmetrical structure as described above.

  Furthermore, in each of the first and second exemplary embodiments, the winding drum portion 3 has a quadrangular prism shape, but the winding drum portion 3 may have a shape other than the quadrangular column shape such as a columnar shape. Further, in each of the first and second embodiments, the leg portions 4 are provided on both ends of the winding drum portion 3 by the same number as the coil windings 2 wound around the winding drum portion 3. , 5 are formed so as to protrude, for example, on both ends of the winding drum portion 3, the leg portions 4, which are larger than the number of coil windings 2 wound around the winding drum portion 3. It is good also as a structure by which 5 is protrudingly formed. Further, in the illustrated example of FIG. 1 and the like, the coil winding 2 is wound around the winding body 3 in a single layer, but the present invention has a configuration in which the coil winding is wound around the winding body in multiple layers. It can also be applied to wire-wound coil components having Further, in each of the first and second embodiments, the winding type coil component is a common mode choke coil component. However, the winding body portion in which a plurality of coil windings are wound and both ends of the winding body portion are provided. Each side has at least the same number of leg portions as the number of coil windings, and external connection electrodes formed on the projecting tip surfaces of the leg portions. The present invention can be applied to any end side as long as it has a configuration in which it is pulled out linearly and fixed to the external connection electrodes of the corresponding leg portions.

It is a figure for demonstrating the winding type coil components of the example of 1st Embodiment. It is a figure for demonstrating the structure part peculiar in the winding type coil components of the example of 1st Embodiment. It is a figure for demonstrating the winding type coil components of the example of 2nd Embodiment. It is a figure for demonstrating one example of a winding type | mold coil component. It is a figure for demonstrating an example of the mounting form of a winding type | mold coil component. It is a figure for demonstrating an example of the operation | work which joins and fixes a coil winding to the leg part of winding type coil components. It is a figure for demonstrating the conventional subject of a winding type | mold coil component.

Explanation of symbols

1 Winding Coil Parts 2 Coil Winding 3 Winding Body 4, 5 Leg 6 Electrode for External Connection 8 Corner Cut Side

Claims (2)

A plurality of coil windings formed by coating the conductor wires, and a winding drum portion around which the plurality of coil windings are wound , and one end side in the longitudinal direction of the winding drum portion starts a common winding The other end side in the longitudinal direction of the winding body portion is formed as a common winding end side, and at both ends in the longitudinal direction of the winding body portion, respectively, at least the number of coil windings A plurality of leg portions that are formed in the same protruding direction from the circumferential surface of the winding drum portion in the same protruding direction with the same number of protrusions formed in an array with intervals in the circumferential direction of the winding drum portion. The leg portion has a shape having a fillet forming side on the outer end surface side in the longitudinal direction of the winding drum portion, and the winding start end sides of all the coil windings are individually separated from the winding start end side of the winding drum portion, respectively. external contact provided on the protruding end face of the legs of different corresponding the winding start end side It is drawn out linearly toward the electrode for use and bonded and fixed to the electrode surface for external connection, and the winding end end sides of all the coil windings are individually separated from the winding end end side of the winding body portion, respectively. Correspondingly different from each other, it has a configuration in which it is drawn out linearly toward the external connection electrode provided on the projecting tip surface of the leg part on the winding end side and bonded and fixed to the external connection electrode surface. All coil windings drawn from the winding start end side and the winding end end side are configured such that an outer portion is removed from a bonding fixing position after being fixed to the external connection electrode surface. On the fillet forming side of the leg portion closest to the winding drawing position on each of the winding start end side and the winding end end side of the trunk portion, the end portion on the side near the coil winding winding central axis of the winding barrel portion A corner cut edge is formed on And has a lead wire of the coil windings joined and fixed to the external connection electrodes which are the closest leg to the winding draw-out position, the virtual extension line corner cut from the portion which is fixedly joined to the electrode for external connection It is arranged in a position that avoids the fillet forming side in the direction passing through the side, and the virtual extension line from the part where the lead wire of the remaining coil winding is joined and fixed to the external connection electrode is in a position that avoids the fillet forming side. A wire-wound coil component that is arranged .   The position and shape of all the legs arranged and arranged on the winding start end side of the winding drum section and all the legs arranged and arranged on the winding end end side are the same as those of the winding start end side. It is symmetric with respect to the end end side, and is symmetric with respect to a symmetry plane that passes through the winding center axis of the coil winding of the winding body and is orthogonal to the arrangement direction of the legs. The wire-wound coil component according to claim 1.

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