WO2015178263A1 - Procédé d'enroulement de multiples fils, dispositif d'enroulement de multiples fils, et composant à bobine enroulée - Google Patents

Procédé d'enroulement de multiples fils, dispositif d'enroulement de multiples fils, et composant à bobine enroulée Download PDF

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Publication number
WO2015178263A1
WO2015178263A1 PCT/JP2015/063734 JP2015063734W WO2015178263A1 WO 2015178263 A1 WO2015178263 A1 WO 2015178263A1 JP 2015063734 W JP2015063734 W JP 2015063734W WO 2015178263 A1 WO2015178263 A1 WO 2015178263A1
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Prior art keywords
wire
core
electrode
winding
end side
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PCT/JP2015/063734
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English (en)
Japanese (ja)
Inventor
高之 山北
康次 堀内
真哉 平井
良太 橋本
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株式会社村田製作所
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Priority to JP2016521054A priority Critical patent/JP6428770B2/ja
Priority to CN201580025676.9A priority patent/CN106463258B/zh
Publication of WO2015178263A1 publication Critical patent/WO2015178263A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F19/00—Fixed transformers or mutual inductances of the signal type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F19/00—Fixed transformers or mutual inductances of the signal type
    • H01F19/04—Transformers or mutual inductances suitable for handling frequencies considerably beyond the audio range
    • H01F19/06—Broad-band transformers, e.g. suitable for handling frequencies well down into the audio range
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06—Coil winding

Definitions

  • the present invention relates to a multi-wire winding method, a multi-wire winding apparatus, and a wire-wound coil component in which a plurality of wires are wound around a core portion of a core to form a coil component.
  • a coil component in which a plurality of electrodes each having a flange portion on one end side and the other end side in the axial direction of the core and having a plurality of electrodes connected to wires on each flange portion are formed with a groove portion therebetween, and a winding method thereof And the winding device.
  • the coil parts targeted by the present invention include, for example, common mode choke coils such as 2-line, 3-line, 4-line, and pulse transformer type coils.
  • a coil component 100 having a structure as shown in FIG. 17 (here, a two-line common mode choke coil is shown) is known.
  • Reference numeral 101 denotes a core made of a magnetic material, which has a core portion 102 at the center thereof and a pair of flange portions 103 and 104 at both ends in the axial direction.
  • Two wires 110 and 120 are wound around the core portion 102 in parallel.
  • Two (a total of four) electrodes 105 to 108 are formed on the mounting surface side of the flange portions 103 and 104, respectively.
  • the start lines 110a and 120a of the wires 110 and 120 are connected and fixed on the electrodes 105 and 106 of the one end side flange 103, and the end lines 110b and 120b of the wires 110 and 120 are connected to the electrodes 107 and 120 of the other end side flange 104, respectively.
  • the connection is fixed on 108.
  • the start line portion 110a of one wire 110 is connected and fixed on the electrode 105 substantially parallel to the core axis (substantially perpendicular to the outer wall surface of the flange), but the start line portion 120a of the other wire 120 is It is connected and fixed on the electrode 106 in an oblique direction with respect to the core axis.
  • end 120b of the wire 120 is connected and fixed on the electrode 108 substantially parallel to the core axis, but the end 110b of the wire 110 is connected and fixed on the electrode 107 in an oblique direction with respect to the core axis. ing.
  • a short circuit occurs between the start line portion 120a of the wire 120 and the electrode 105 having a different potential, and between the end line portion 110b of the wire 110 and the electrode 108 having a different potential.
  • the start line portion 120a of the wire 120 and the end line portion 110b of the wire 110 extend linearly between the winding core portion and the electrode, the start line portion 120a and the end line portion 110b are electrodes 105 having different potentials. , 108 (indicated by S1 and S2), and the risk of occurrence of a short circuit between them increases.
  • FIG. 18 In order to cope with such a problem, there is a coil component 200 as shown in FIG. In FIG. 18, the same parts as those in FIG.
  • the coil component 200 can be manufactured by a winding device disclosed in Patent Document 1.
  • the start line portions 110a and 120a of the wires 110 and 120 are connected to the electrodes 105 and 106 in the core axis direction, and the end line portions 110b and 120b of the wires 110 and 120 are also in the core axis direction with respect to the electrodes 107 and 108. It is connected.
  • the start line portion 120a of the wire 120 includes the connection portion 120a 1 connected to the electrode 106 in the core axial direction and the wiring portion 120a 2 extending to the core portion 102, and the connection portion 120a 1 and the wiring Since it is bent between the portion 120a 2 , the distance between the starting line portion 120a and the electrode 105 having a different potential can be secured, and the risk of occurrence of a short circuit can be reduced.
  • the end portion 110b of the wire 110 is connected to the electrode 107 in the core axial direction, the wire 110 is bent between the connection portion 110b 1 to the electrode 107 and the wiring portion 110b 2 extending from the core portion 102. For this reason, the distance between the end line 110b and the electrode 108 having a different potential can be secured, and the risk of occurrence of a short circuit can be reduced.
  • the two wires 110 and 120 are guided from the outside of the one end side flange 103 while being guided by hook pins or the like, whereby the starting wire portions 110a and 120a of the wires 110 and 120 are cored on the electrodes 105 and 106. It arrange
  • the end 120b of the wire 120 can be disposed in the core axial direction with respect to the electrode 108 simply by guiding the wire 120 from the inside to the outside of the other end side flange 104.
  • 110 b cannot be arranged in the core axial direction with respect to the electrode 107 simply by guiding the wire 110 from the inside to the outside of the other end side flange 104. Therefore, in the winding device described above, the end wire portion 110b is pressed against the core portion 102 by the wire holding member 201, whereby the end wire portion 110b is temporarily fixed, and the wire 110 is fixed to the core in the fixed state.
  • the end line portion 110b is fixed on the electrode 107 in the core axial direction by being guided outward in the axial direction.
  • the wire 110 is damaged because the end portion 110b of the wire 110 is pressed against the core portion 102 by the wire holding member 201.
  • the wire may break. That is, since a predetermined tension is applied to the wire 110, an unreasonable load is applied to the end line portion 110 b of the wire 110 by pressing the wire 110 against the core portion 102 by the wire wire pressing member 201. May be damaged. An insulating film is formed on the surface of the wire, but if the insulating film is damaged, there is a possibility that breakdown voltage deterioration or insulation failure may occur.
  • the end line portion 110b of the wire 110 pressed by the wire holding member 201 is bent at two positions between the connection portion 110b 1 and the wiring portion 110b 2 , so that the end line portion 110b of the wire 110 is loosened. there's a possibility that.
  • FIG. 19A shows a conventional three-line common mode choke coil 300
  • FIG. 19B shows a three-line common mode choke coil 400 manufactured by the winding device disclosed in Patent Document 1.
  • the start line portions 302a and 303a of the second and third wires 302 and 303 are close to the electrodes 304 and 305 having different potentials (indicated by S3 and S4).
  • the end portions 301b and 302b of the first and second wires 301 and 302 are close to the electrodes 308 and 309 having different potentials (indicated by S5 and S6), the risk of occurrence of a short circuit is high.
  • the start and end portions of all the wires 301 to 303 are fixed to the electrodes 304 to 309 in the core axis direction as shown in FIG.
  • the wires 301 and 302 may be damaged because the end portions 301b and 302b of the wires 301 and 302 need to be pressed against the core portion 102 by the wire holding member 310. The wire may break.
  • an object of the present invention is to provide a multi-wire winding method and a multi-wire winding device that can reduce the risk of occurrence of a short circuit between a wire and an electrode having a different potential and can reduce damage to the wire. Another object is to provide a highly reliable wire-wound coil component.
  • the multi-wire winding method according to the present invention is a multi-wire winding method in which a coil part is formed by winding a plurality of wires around a core portion of a core, and each of the core is arranged on one end side and the other end side in the axial direction.
  • a plurality of electrodes each having a flange portion and connected to a wire are formed in each flange portion with a groove portion therebetween.
  • the starting line portions of the plurality of wires are guided from the outside to the inside of the one end side flange of the core, and the start line portions of the respective wires are arranged on the electrodes on the one end side flange and connected.
  • a multi-wire winding device is a multi-wire winding device that forms a coil component by winding a plurality of wires around a core portion of a core, and each of the core is arranged on one end side and the other end side in the axial direction.
  • a plurality of electrodes each having a flange portion and connected to a wire are formed in each flange portion with a groove portion therebetween.
  • the apparatus includes a plurality of nozzles that respectively supply the wires, a moving mechanism that moves the plurality of nozzles, a rotation mechanism that rotates the core around its axis, and a joining unit that connects the wires to the electrodes.
  • a wire hook inserted into the groove of the flange on the other end side of the core, and an operating device for operating the wire hook.
  • Leading portions of the plurality of wires are guided from the outside to the inside of the one end side collar of the core by a nozzle, and the respective wires are arranged on the electrode of the one end side collar and connected by the joining means.
  • the wire is guided laterally with respect to the axial direction of the core, and the core is rotated to wind the plurality of wires together around the core portion.
  • the wire-wound coil component according to the present invention has a core portion and a flange portion formed at both ends of the core portion, and a core in which a plurality of electrodes are formed with a groove portion between each flange portion. And a plurality of wires wound around the core and having a start line and an end line connected to the electrode.
  • the starting line portion of the wire connected to the electrode on the one end side flange portion at a short distance from the winding start position of the winding core portion includes a connecting portion connected on the electrode and a winding core side edge of the electrode.
  • a wire portion that is bent at a portion and extends to the winding start position, and the wire start line portion connected to the electrode on the one end side collar portion at a distance from the winding start position of the core portion is A connecting portion connected on the electrode; and a wiring portion that is bent in a lateral direction at the core portion side edge portion of the electrode and extends to the winding start position.
  • the end portion of the wire connected to the electrode on the other end side flange portion at a short distance from the winding end position of the winding core portion includes a connecting portion connected on the electrode and the winding core portion side of the electrode.
  • the start line portions of the plurality of wires are connected to the electrode on the one end side flange portion, bent at the core portion side edge portion of the electrode, and extended to the winding start position.
  • the starting wire portion of the wire connected to the electrode on the one end side flange portion at a distance from the winding start position of the winding core portion is composed of the connecting portion connected on the electrode and the winding core side edge portion of the electrode.
  • the end portion of one wire is connected to the electrode on the other end side flange portion, and then bent at the core portion side edge portion of the electrode to extend to the winding end position.
  • the end of the other wire that is, the end of the wire connected to the electrode at a long distance from the winding end position of the core, includes the connection connected on the electrode and the side edge of the core of the electrode Part or a wiring part that is bent in the lateral direction at a position closer to the winding core part and extends to the winding end position.
  • the “winding start position” is the position or side surface of the core part where the wound wire first comes into contact with the core part, and the “winding end position” is wound. It is the position or side surface of the core part where the wire comes into contact with the core part last.
  • Each of the finished wire portions has a connection portion and a wiring portion.
  • the connection portion is a portion connected on the electrode
  • the wiring portion is a portion extending between the connection portion and the winding start position (or winding end position) of the winding core portion.
  • the wire start line may be connected to the electrode in the core axial direction, and the wire end line connected to the electrode on the other end side flange at a short distance from the winding end position of the core is also provided. Further, it may be connected on the electrode in the core axial direction.
  • the end portion of the wire connected to the electrode of the other end side flange portion that is far from the winding end position of the winding core portion may be connected to the electrode in an oblique direction with respect to the core axial direction.
  • the “oblique direction with respect to the core axis direction” is a direction in which an inclination angle with respect to the core axis is larger than the “core axis direction”.
  • “bending in the lateral direction” means that the angle of the wire start line (or end line) changes between the wiring part and the connection part when viewed from the direction facing the electrode. .
  • the reason why the starting line portion of the wire bends in the lateral direction is that after the starting wire portion of the wire is connected to the electrode on the one end side flange in the core axial direction, the starting wire portion of the wire is led to the winding start position of the winding core portion. Because.
  • the reason why the end portion of the wire bends in the lateral direction is that the end portion of the wire drawn from the winding end position of the winding core portion is bent by the wire hook and then connected to the electrode on the other end side flange portion. It is.
  • the winding method of the present invention will be described by taking an example in which two wires are wound around a core.
  • one end side flange of the core is held by a rotation mechanism such as a spindle chuck.
  • hook the starting ends of the two wires onto a hook pin, etc. while feeding the two wires from the nozzle, move the nozzle from the outside of the one end side collar to the inside, It arrange
  • the starting portions of the two wires are connected to the electrode in the core axis direction.
  • the “core axial direction” does not need to be strictly parallel to the core axial direction, and at least the inner edge (core part side) and the outer edge (saddle outer surface side) of the electrode It only has to extend so as to connect the two.
  • the starting line part of the wire is connected to the electrode in the core axial direction, a short circuit between the starting line part of the wire and the electrode having a different potential can be suppressed.
  • the two wires After connecting the starting wire part to the electrode, the two wires are guided laterally with respect to the axial direction of the core, and the core is rotated by a rotating mechanism, so that the two wires are wound around the core part together. Turn.
  • the wire hooking tool is inserted into the groove portion of the other end side flange portion, and the end portions of the two wires are guided from the inside of the other end side flange portion to the outside.
  • One of the wires can be fixed on the electrode in the core axial direction simply by being attracted to the outside of the buttock without contacting the wire hook.
  • the end of the wire is hooked on the tip of the wire hook, and the wire is bent. Unlike the wire pressing member in the conventional winding device, this bending only bends the wire in the lateral direction, so that the load applied to the wire can be reduced, and damage and disconnection can be suppressed.
  • the wire After the wire is bent, it is connected to the corresponding electrode while maintaining the tension at the end portion.
  • the end portion of the bent wire is connected and fixed to the electrode in an oblique direction or parallel to the core axis direction.
  • the angle of the wire stretched between the core and the electrode is changed by the wire hooking tool in the middle of the wire, the distance between the wire and the electrode having a different potential can be secured, and a short circuit can be suppressed. In this way, the coil component is completed.
  • each flange has a plurality of legs
  • electrodes are mounted on the mounting surfaces of the legs.
  • the wire hooking tool is inserted into the groove part until the tip protrudes to the inner side surface of the other end side flange part or the core part side from it, so that the end of the wire is connected to the wire hooking tool.
  • the tip of the hook is protruded from the inner surface of the other end side flange to the core portion side, the wire can be easily hooked to the tip of the wire hook, and the bending position of the wire is stabilized.
  • the distance between the wire and the electrode having a different potential can be increased.
  • the wire hooking tool can be inserted in any direction.
  • a method of inserting the wire hooking tool horizontally from the outside in the core axis direction into the groove a method of inserting from above the core, or the like can be considered.
  • interference between the nozzle for guiding the wire and the wire hooking tool can be suppressed, and Since no pressing force is applied to the core, the load on the core can be reduced.
  • the tip of the wire hook may be bifurcated, and two wires may be hooked and bent at each tip. That is, three electrodes are respectively formed on the flange portions on one end side and the other end side of the core, and two groove portions are respectively formed on the portions of the flange portions between these electrodes. It is good also as a structure provided with two convex parts each inserted in two groove parts of a collar part. In that case, it is possible to secure the distance between the end portion of the two wires and the electrode having a different potential, and to reduce the risk of occurrence of a short circuit.
  • the wire hook is inserted only into the groove portion far from the winding end position of the winding core portion of the two groove portions on the other end side flange portion. It is good also as a structure where this convex part is provided.
  • only the wire connected to the electrode farthest from the winding end position of the winding core portion can be hooked on the wire hook and bent in the lateral direction.
  • the end portion of the wire connected to the central electrode is connected to the central electrode without being bent in the lateral direction (without being hooked on the wire hook). Therefore, the movement of the nozzle that feeds the wire can be simplified and the tact time can be shortened as compared with the case where the end portions of the two wires are hooked as described above.
  • a core is good also as a structure which has the spacer part which does not have an electrode between the side part by the side of the core part of a collar part, or a collar part and a core part.
  • a spacer part is a part without an electrode for making a space
  • the spacer portion may be provided on the side portion of the flange portion on the core portion side, or may be provided between the flange portion and the core portion.
  • the end portion of the center wire when the end portion of the center wire is connected to the center electrode without bending in the lateral direction as described above, the end portion of the wire is the next electrode (electrode having a different potential). May increase the risk of shorts.
  • a spacer part is formed between the core part side of the collar part or between the collar part and the core part, the distance between the end line part of the central wire and the adjacent electrode can be determined by this spacer part. It is possible to secure a short circuit while omitting the wire bending operation.
  • the present invention is a multi-line using a plurality of wires such as a 2-line common mode choke coil, a 3-line common mode choke coil, a 4-line common mode choke coil and a pulse transformer type coil using four wires.
  • the present invention can be similarly applied to a wire-wound coil component.
  • the rotation mechanism may be configured to chuck and rotate the one end side flange portion of the core, and the wire hooking tool and the operating device thereof may be provided in a fixed portion different from the rotation mechanism.
  • the wire hooking tool of the present invention is provided in a fixed part separate from the rotation mechanism, so that the wire hooking tool only needs to be operated when connecting the wire end line part, and the load on the core is reduced. Shortening can be suppressed while reducing.
  • the end portion of at least one wire is hooked on the wire hook and bent in the lateral direction.
  • damage to the wire can be reduced, and damage and disconnection can be suppressed.
  • the wire After the wire is bent, its end portion is connected to the corresponding electrode, so that the distance between the wire and the electrode having a different potential can be secured, and the risk of occurrence of a short circuit can be reduced. As a result, a highly reliable coil component can be provided.
  • the end portion of at least one wire is bent in the lateral direction at the edge portion on the side of the core of the electrode or at the position on the side of the core, and the winding is started from this bending position. Since it extends to the end position, the distance between the wire and the electrode having a different potential can be secured, and the risk of occurrence of a short circuit can be reduced. As a result, a highly reliable coil component can be provided. Moreover, since the end line part of a wire is only bend
  • FIG. 1 is a plan view, a front view, a cross-sectional view taken along line AA, and a cross-sectional view taken along line BB of a first embodiment (two-line common mode choke coil) of a wire-wound coil component according to the present invention. It is a top view of the modification (2 line common mode choke coil) of the winding type coil components of 1st Example. It is the front view (a) and top view (b) of an example of the winding device concerning the present invention. It is the front view (a) and the top view (b) in the 1st process of the winding apparatus shown in FIG.
  • FIG. 4A is a front view (a), a plan view (b), and a cross-sectional view taken along a line CC in the third step of the winding device shown in FIG. It is a fragmentary perspective view in a 3rd process.
  • FIG. 4A is a perspective view which shows the method of bending the end line part of the coil components shown in FIG.
  • FIG. 1 shows an example of a coil component 1 manufactured by a winding method according to the present invention.
  • the coil component 1 includes a core 2 made of a magnetic material.
  • the core 2 has the core part 3 in the center part, and has a pair of collar parts 4 and 5 in the axial direction both ends.
  • the core portion 3 has a rectangular parallelepiped shape having upper and lower surfaces and both side surfaces, and two wires 10 and 11 are wound in parallel on the peripheral surface of the core portion 3.
  • the axial direction of the core 2 is the Y axis
  • the horizontal direction perpendicular thereto is the X axis
  • the vertical direction is the Z axis.
  • Electrodes 6a, 6b, 7a, 7b are formed on the peripheral surface including the top surface of the part.
  • the electrodes 6a to 7b may be formed only on the top surface of the leg portion.
  • Grooves 4a and 5a are formed between the electrodes 6a and 6b and between the electrodes 7a and 7b, respectively.
  • the electrodes 6a to 7b are, for example, a base electrode having a film layer of 10 to 30 ⁇ m made of Ag, Ag—Pd, Ag—Pt or the like, and about 1 to 30 ⁇ m made of Ni, Sn, Sn—Pd or the like formed thereon. And a plating layer.
  • the base electrode is usually formed by DIP coating, printing, sputtering, or the like.
  • the electrodes 6a to 7b formed on the top surfaces of the leg portions are preferably formed with substantially the same shape and substantially the same area.
  • the wires 10 and 11 are formed of a metal conductor such as Cu, Ag, or Au, and an insulating film is formed on the surface thereof.
  • the starting wire portions 10a and 11a of the wires 10 and 11 are connected to the electrodes 6a and 6b of the one end side flange 4 substantially parallel to the core axis line (substantially perpendicular to the outer wall surface of the flange 4).
  • the end portion 11b of the wire 11 is connected to the electrode 7b of the other end side flange 5 substantially parallel to the core axis (substantially perpendicular to the outer wall surface of the flange 5).
  • the line part 10b is connected on the electrode 7a of the other end side flange part 5 in an oblique direction with respect to the core axis.
  • a connection method for example, various methods such as soldering, thermocompression bonding, welding, and spot welding are used.
  • the starting wire portion 10 a of one wire 10 is connected and fixed to the top surface of the electrode 6 a in the core axial direction, and then from the inner edge of the flange portion 4 to the core portion 3. It is bent in the vertical direction (Z direction) and wound to the winding start position 3a of the core part 3 at the shortest distance.
  • the starting wire portion 11a of the other wire 11 is bent in the lateral direction at the inner edge of the flange portion 4 and the connection portion 11a 1 connected and fixed to the top surface of the electrode 6b in the core axial direction.
  • the wiring portion 11 a 2 extends linearly from the inner edge toward the winding start position 3 a of the winding core portion 3, and is wound around the winding core portion 3.
  • the end portion 10 b of one wire 10 has its wiring portion 10 b 2 pulled out obliquely upward from the winding end position 3 b of the core portion 3, and which is deflected laterally at substantially the same position as the inner surface (bent point P1), the connecting portion 10b 1 is connected and fixed in an oblique direction with respect to the core axis direction on the top surface of the electrode 7a.
  • the end line portion 10b changes in angle between the wiring portion 10b 2 and the connection portion 10b 1 , a distance ⁇ 2 (see FIG. 1A) between the wire 10 and the electrode 7b having a different potential is secured. This can reduce the risk of short circuits.
  • the end portion 11b of the other wire 11 is pulled out from the winding end position 3b of the winding core portion 3 in the upward direction, bent in the longitudinal direction at the inner edge of the flange portion 5, and then connected to the electrode 7b in the core axis direction. Is done.
  • start lines 10a and 11a of the wires 10 and 11 connected to the electrodes 6a and 6b are parallel to the core axis
  • end line 11b of the wire 11 connected to the electrode 7b is also parallel to the core axis.
  • the coil component 1 of the present embodiment configured as described above has the following operational effects. (1) Since the wire does not approach or come into contact with adjacent electrodes, the insulation reliability is high. (2) Since the electrode area of the electrode is substantially uniform, the crimping quality and the electrode fixing force can be stably secured. (3) Since the winding width can be used effectively, the number of windings can be increased and the L value can be easily obtained. (4) Since the end line portion 10b of the wire 10 is not forcibly bent, damage such as disconnection and scratches is small. (5) Since the end line portion 10b of the wire 10 extends linearly from the winding end position 3b and is fixed to the electrode 7a immediately after being bent near the inner edge of the electrode 7a, the wire 10 is not slackened. .
  • FIG. 2 shows a modification 1A of the wire-wound coil component shown in FIG.
  • FIG. 1 shows an example in which the end line portion 10b of the wire 10 is bent at substantially the same position (P1) as the inner side surface of the flange portion 5, the end line portion 10b is seen from the inner side surface of the flange portion 5 in the example of FIG. It is bent at a position (P2) protruding to the core part 3 side. That is, the bending point P2 is offset from the inner surface of the flange part 5 by the distance e toward the core part 3 side.
  • This can be achieved by inserting a wire hook 34, which will be described later, such that its tip protrudes from the inner surface of the other end side flange 5 toward the core 3.
  • the distance ⁇ 2 between the end line portion 10b of the wire 10 and the electrode 7b having a different potential can be increased, and the risk of occurrence of a short circuit can be further reduced.
  • FIG. 3 shows an example of a winding device for winding the wires 10 and 11 around the above-described wire-wound coil component 1.
  • the winding device 20 generally includes a spindle chuck 21, a support base 30, and nozzles 40 and 41 that feed out two wires 10 and 11.
  • the facing direction (core axis direction) between the spindle chuck 21 and the support base 30 is defined as the Y axis
  • the orthogonal direction (horizontal direction) is defined as the X axis
  • the vertical direction is defined as the Z axis.
  • the spindle chuck 21 includes a main body portion 22 and a movable portion 23, and the movable portion 23 can move toward and away from the main body portion 22 by operating means (not shown). Between the chuck portions 22a and 23a of the main body portion 22 and the movable portion 23, both side edges of the flange portion 4 on the start line side of the core 2, that is, both side edges in the X-axis direction can be gripped. Here, the core 2 is gripped so that the electrodes 6a to 7b face upward.
  • a servo motor 24 is provided at the rear portion of the main body 22 to rotate the main body 22 and the movable portion 23 integrally with a horizontal axis (Y axis) as a central axis.
  • a wire clamp 25 and two hooking pins 26 a and 26 b are provided on the upper surface of the main body 22.
  • the positions of the hooking pins 26a and 26b are such that one end of the wires 10 and 11 is fixed to the wire clamp 25, and the nozzles 40 and 41 are moved in the Y-axis direction while the wires 10 and 11 are hooked on the hooking pins 26a and 26b, respectively.
  • the starting lines 10a and 11a of the wires 10 and 11 are set at positions where they can be arranged in the Y-axis direction (parallel to the core axis) on the central portions of the electrodes 6a and 6b.
  • the support base 30 is a member fixed at a predetermined position, and a wire clamp 31 and two hooking pins 32a and 32b are provided on the upper surface thereof.
  • the position of one hooking pin 32a is such that when the wire 10 is pulled out of the core 2 in a state where it is hooked on a wire hook 34, which will be described later, and the hook 10 is hooked on the hooking pin 32a, the end portion 10b of the wire 10 is obliquely placed on the electrode 7a It is set to a position that crosses.
  • the position of the other hooking pin 32b is such that when the end portion of the wire 11 drawn from the core 2 is hooked on the hooking pin 32b and fixed to the wire clamp 31, the end portion 11b of the wire 11 is placed on the electrode 7b.
  • the support base 30 is provided with a cylinder 33 which is an example of a hook actuating device, and a wire hook 34 is attached to the support base 30 so as to advance and retreat in the core axis direction (Y-axis direction). That is, the wire hooking tool 34 can be moved to two positions of a retracted position and an advanced position. At the advanced position, the wire hooking tool 34 is inserted into the groove 5 a of the flange portion 5 of the core 2, and the tip of the wire hooking tool 34. Is set so as to protrude to the same surface as the inner surface of the flange portion 5 or to the core portion side.
  • the cylinder 33 is provided on the support base 30.
  • the cylinder 33 may be provided on a fixed portion different from the support base 30.
  • the operation direction of the wire hook 34 is not limited to the one that moves back and forth in the horizontal direction, and may be one that moves up and down in the vertical direction or an arm that can rotate around a horizontal support shaft, for example.
  • the wire hook 34 in this embodiment is a rectangular parallelepiped block, but the shape is arbitrary as long as it has a function of hooking the wire 11 at the tip.
  • the vertical dimension (Z direction) of the wire hook 34 is larger than the depth of the groove 5a. That is, it is preferable that a part of the wire hook 34 protrudes upward from the groove 5a in a state of being inserted into the groove 5a.
  • the nozzles 40 and 41 are respectively held by holding members (not shown) and can move in the XY directions (or XYZ directions), and the wire interval can be freely changed.
  • Heater chips 45 and 46 that can be operated in the vertical direction are disposed above the flanges 4 and 5 of the core 2.
  • One heater chip 45 descends in a state where the start line portions 10a and 11a of the wires 10 and 11 are disposed on the electrodes 6a and 6b, and connects the start line portions 10a and 11a to the electrodes 6a and 6b.
  • the other heater chip 46 descends in a state where the end lines 10b and 11b of the wires 10 and 11 are arranged on the electrodes 7a and 7b, and connects the end lines 10b and 11b to the electrodes 7a and 7b. Since the wire hook 34 is also inserted into the groove 5a of the flange 5 at the same time when the heater chip 46 is operated, the heater chip 46 only has the electrodes 7a and 7b so as not to interfere with the wire hook 34. It is preferable to have a bifurcated convex shape that can be heated.
  • FIG. 4 shows the first step.
  • the chuck portions 22a and 23a of the spindle chuck 21 grip the both side surfaces of the flange portion 4 of the core 2 and the electrodes 6a to 7b face upward.
  • One end of the wires 10 and 11 fed out from the nozzles 40 and 41 are fixed to the wire clamp 25, and the nozzles 40 and 41 are moved onto the core 2 while the wires 10 and 11 are hooked on the hooking pins 26a and 26b, respectively. Move in the axial direction.
  • the start line portions 10a and 11a of the wires 10 and 11 are arranged on the electrodes 6a and 6b in the Y-axis direction.
  • the heater chip 45 is lowered to connect the start line portions 10a and 11a to the electrodes 6a and 6b. After the connection, the heater chip 45 rises again.
  • FIG. 5 shows the second step, in which the servo motor 24 is driven and the spindle chuck 21 is rotated in a state where the nozzles 40 and 41 are moved laterally (X direction) from the core 2. That is, the core 2 is rotated. Simultaneously with the rotation, the nozzles 40 and 41 are moved in the Y direction and the X direction, whereby the two wires 10 and 11 are wound around the core portion 3 of the core 2 in parallel. Thereby, the starting line part of the wires 10 and 11 is drawn around avoiding contact with the adjacent electrodes 6a and 6b, and is wound with a certain tension.
  • FIG. 6 shows the third step, in which the winding work of the wires 10 and 11 to the core portion 3 is completed a predetermined number of times, and the rotation of the spindle chuck 21 is stopped at a position where the electrodes 6a to 7b face upward. Then, the wire hook 34 is advanced to a position where the wire hook 34 is inserted into the groove 5 a of the flange 5 of the core 2.
  • the nozzles 40 and 41 are operated in the X and Y directions, and the end portion 10b of one wire 10 is hooked on the distal end portion of the wire hooking tool 34 and guided from the inside to the outside of the other end side flange portion 5.
  • the end line portion 10b is bent and disposed on the electrode 7a in an oblique direction.
  • the wire hook 34 and the end line 10b may be bent. There is a possibility that the contact position shifts and the wire 10 is rubbed.
  • the wire hooking tool 34 is inserted into the groove 5a and then the wire 10 is guided from the inside to the outside of the other end side flange portion 5 so that the end line portion 10b is bent. Does not act, and there is no fear of the wire 10 being damaged or broken.
  • the end portion 11b of the other wire 11 can be arranged in the Y-axis direction on the electrode 7b by being linearly guided from the winding core portion onto the electrode 7b.
  • the heater chip 46 is lowered to connect the end portions 10b and 11b to the electrodes 7a and 7b ((c) in FIG. 6). To show).
  • the wires 10 and 11 are cut along the outer wall surfaces of the flange portions 4 and 5 to complete the coil component 1 shown in FIG. 1 or FIG.
  • FIG. 7 is a detailed view in the third step.
  • the wire hook 34 is inserted into the groove 5a of the flange 5 of the core 2 in the Y-axis direction, and the tip of the wire hook 34 is flush with the inner surface of the flange 5 or on the core side. It is in a state of protruding.
  • the end line portion 10b of the wire 10 By guiding the end line portion 10b of the wire 10 from the inside to the outside of the collar portion 5 while hooking the end portion of the wire hook 34, the end line portion 10b is disposed on the electrode 7a in an oblique direction. . In this state, the end line portion 10b is connected to the center portion of the electrode 7a by the heater chip 46.
  • the position of the wire 10 is not shifted. That is, a routing is formed such that the end line portion 10b extending between the electrode 7a and the core portion 3 maintains a distance from the electrode 7b, and the risk of occurrence of a short circuit can be reduced. Therefore, stable quality coil parts can be manufactured. It should be noted that the load on the wire may be further reduced by forming a C surface or an R surface as appropriate at the tip (corner portion) of the wire hook 34 that is the bending position of the end line portion 10b of the wire 10.
  • FIG. 8 shows a second embodiment of the coil component.
  • This coil component 1B shows an example in which the present invention is applied to a three-line common mode choke coil.
  • the same or corresponding parts as those in FIG. Three leg portions are formed on the mounting surface side of the flange portions 4 and 5 of the core 2, and electrodes 6a to 6c and 7a to 7c are formed on the surfaces thereof, respectively. Therefore, grooves 4a and 4b are formed between the electrodes 6a to 6c, and grooves 5a and 5b are formed between the electrodes 7a to 7c.
  • Three wires 10, 11, and 12 are wound in parallel on the peripheral surface of the core portion 3.
  • the starting line part 10a of the wire 10 is connected to the electrode 6a
  • the starting line part 11a of the wire 11 is connected to the electrode 6b
  • the starting line part 12a of the wire 12 is connected to the electrode 6c.
  • the connecting direction of the starting lines 10a, 11a, 12a of the wires 10, 11, 12 to the electrodes 6a-6c, that is, the direction of the connecting parts 10a 1 , 11a 1 , 12a 1 is substantially the core axis direction.
  • the wiring part 11a 2 of the start line part 11a is bent in the lateral direction with respect to the connection part 11a 1
  • the wiring part 12a 2 of the start line part 12a is bent in the horizontal direction with respect to the connection part 12a 1 .
  • the start line portion 11a of the wire 11 is prevented from contacting the electrode 6a having a different potential
  • the start line portion 12a of the wire 12 is prevented from contacting the electrode 6b having a different potential.
  • the connection method of the start lines 10a, 11a, 12a of the wires 10, 11, 12 to the electrodes 6a-6c is the same as that in FIG.
  • the starting line portions 10a to 12a can be arranged on the electrodes 6a to 6c substantially in the core axis direction.
  • End portions 10b, 11b, and 12b of the wires 10, 11, and 12 are connected to the electrodes 7a to 7c, respectively.
  • the end line portion 12b of the wire 12 is drawn from the core portion 3 to the electrode 7c immediately above, and thus is connected to the electrode 7c in the core axial direction.
  • the end line portions 10b and 11b of the wires 10 and 11 are drawn obliquely upward from the core portion 3 and connected to the electrodes 7a and 7b in an oblique direction with respect to the core axis. At this time, as shown in FIGS.
  • the protrusions 35 a and 35 b of the wire hook 35 are placed in the grooves 5 a and 5 b between the electrodes 7 a, 7 b and 7 c, and the tips thereof are flush with the inner surface of the flange 5. Or it inserts so that it may be in the state where it protruded from the core part side. In this state, if the end portions 10b and 11b of the wires 10 and 11 are hooked on the convex portions 35a and 35b of the wire hook 35 and guided from the inside to the outside of the flange portion 5, the end portions 10b and 11b are hooked.
  • the projections 35a and 35b of the tool 35 are bent in the lateral direction at the tips.
  • the angle changes between the connecting portion 10b 1 of the end wire portion 10b and the wiring part 10b 2 is generated, the angle changes between the connecting portion 11b 1 of the end wire portion 11b and the wiring part 11b 2 occurs. Therefore, the end line portions 10b and 11b of the wires 10 and 11 are bent around the electrodes 7b and 7c having different potentials, and the distances ⁇ 1 and ⁇ 2 between the electrodes 7b and 7c and the end line portions 10b and 11b (see FIG. 8). ) Can be secured. As a result, the risk of occurrence of a short circuit can be reduced.
  • the wire hooking tool 35 of this embodiment has a substantially U shape in a plan view provided with convex portions 35a and 35b inserted into the groove portions 5a and 5b and a connecting portion 35c for connecting them.
  • the upper surface of the connecting portion 35c is preferably formed lower than the upper surfaces of the convex portions 35a and 35b (desirably the same height as or lower than the upper surface of the electrode 7b).
  • FIG. 11 shows various modifications of the wire hook.
  • FIG. 11A shows an example of a wire hook 36 applicable to a two-line common mode choke coil, in which a notch 36a is formed on the lower surface of the tip. The notch 36a makes it easy to stably hook the wire, and the wire can be easily bent.
  • FIG. 11B shows an example of a wire hook 37 that can be applied to a three-line common mode choke coil, in which a C surface 37d is formed on the lower surfaces of the tips of the convex portions 37a and 37b. By hooking the wire on the C surface 37d, the wire can be bent stably.
  • the wire hooking tool having a notch or a C surface can be applied to a pulse transformer described later in addition to a 2-line common mode choke coil and a 3-line common mode choke coil.
  • FIG. 12 shows another example 1C of a three-line common mode choke coil.
  • the electrodes 6a to 6c and 7a to 7c are continuously formed from the outer side surface to the inner side surface of the flanges 4 and 5, but in this embodiment, Spacer portions 4c and 5c having no electrodes are formed on the inner side of the flange portions 4 and 5 (side portion on the core portion side).
  • the wire hooking tool 38 having one convex portion inserted only into the groove portion 5a located far from the winding end position 3b of the two groove portions 5a and 5b is used.
  • the end line portion 11b of the wire 11 that does not contact the wire hook 38 is drawn linearly (not bent in the lateral direction) from the winding end position 3b of the winding core portion 3 to the electrode 7b. Since the connection is made, the end line portion 11b may approach the adjacent electrode 7c. However, in this embodiment, since the spacer portion 5c having no electrode is provided on the inner side portion (side portion on the core portion side) of the flange portion 5, the end line portion 11b and the electrode can be formed without bending the end line portion 11b. It becomes easy to secure the distance ⁇ 2 with respect to 7c, and the occurrence of a short circuit can be prevented.
  • this winding method of bending only one wire 10 can be applied to a core that does not have the spacer portions 4c and 5c inside the flange portions 4 and 5, but the end portion 11b of the wire 11 is placed laterally. It is desirable to apply to a core having a shape that does not contact the electrodes 7c having different potentials without being bent in the direction.
  • FIG. 12 shows an example in which only the end line portion 10b of the wire 10 is bent in the lateral direction and the end line portion 11b of the wire 11 is not bent in the horizontal direction. , 11b may be bent.
  • FIG. 13 shows yet another example 1D of a three-line common mode choke coil.
  • spacer portions 4 d and 5 d that are wider than the core portion 3 and have the same thickness are formed between the flange portions 4 and 5 and the core portion 3.
  • the winding start position 3a of the winding core part 3 can be separated from the electrodes 6a to 6c in the Y-axis direction by the spacer part 4d, and a short circuit between the start line parts 11a and 12a and the electrodes 6a and 6b having different potentials can be suppressed.
  • the winding end position 3b of the core part 3 can be separated from the electrodes 7a to 7c in the Y-axis direction by the spacer part 5d, the end line parts 10b and 11b and the electrodes 7b and 7c having different potentials are short-circuited. Can be suppressed.
  • the end line portions 10b and 11b of the two wires 10 and 11 are bent in the horizontal direction.
  • the end line portion 11b of the central wire 11 is not bent in the horizontal direction. You may connect with.
  • FIG. 13 shows an example in which the electrodes 6a to 6c and 7a to 7c are provided only on the top surfaces of the flange portions 4 and 5, it is needless to say that electrodes may be provided around the leg portions. .
  • FIG. 14 shows still another example 1E of a three-line common mode choke coil.
  • a spacer portion 4e inclined from the top surface where the electrodes 6a to 6c and 7a to 7c are formed between the flange portions 4 and 5 and the core portion 3 toward the upper surface of the core portion 3, 5e is formed.
  • the winding start position 3a of the core part 3 can be separated from the electrodes 6a to 6c in the Y-axis direction by the spacer part 4d, and the risk of occurrence of a short circuit between the start line parts 11a and 12a and the electrodes 6a and 6b having different potentials is reduced. Can be reduced.
  • the end line parts 10b and 11b and the electrodes 7b and 7c having different potentials are short-circuited. Can reduce the risk of occurrence.
  • the end line portions 10b and 11b of the two wires 10 and 11 are bent in the lateral direction, but the end line portion 11b of the central wire 11 is not bent in the horizontal direction as in FIG. You may connect with.
  • the electrodes 6a to 6c and 7a to 7c are provided only on the top surfaces of the flange portions 4 and 5, but it is needless to say that electrodes may be provided on part of the spacer portions 4e and 5e.
  • FIG. 15 shows an example in which the present invention is applied to a pulse transformer.
  • FIG. 15A is a plan view
  • FIG. 15B is a side view.
  • This pulse transformer 1F has four electrodes 6a to 6d on the mounting surface of the one end side flange 4 of the core 2 and four electrodes 7a to 7d on the mounting surface of the other end side flange 5. Yes.
  • Grooves 4a and 5a are formed between the center two electrodes 6b and 6c, and 7b and 7c, respectively.
  • the starting wire portions 10a and 11a of the two wires 10 and 11 are connected to the electrodes 6b and 6d in the core axial direction, and the wires 10 and 11 are wound around the winding core portion 3 in the counterclockwise direction, for example.
  • a wire hook 39 is inserted into the groove 5a of the flange 5, the end line 10b of the wire 10 is connected to the electrode 7a in the core axis direction, and the end line 11b of the wire 11 is hooked. It is bent laterally by one edge of the tip of the tool 39 and connected to the electrode 7c in an oblique direction.
  • the start lines 12a and 13a of the other two wires 12 and 13 are connected to the electrodes 6a and 6c in the core axial direction, and the wires 12 and 13 are connected to the core 3 in the direction opposite to the wires 10 and 11. It is wound (for example, clockwise direction).
  • the wire hooking tool 39 is again inserted into the groove 5a of the flange 5, the end line 13b of the wire 13 is connected to the electrode 7d in the core axis direction, and the end line 12b of the wire 12 is connected to the wire
  • the other end of the tip of the hook 39 is bent laterally and connected to the electrode 7b in an oblique direction.
  • the two wires 11 and 12 can be bent by the common wire hooking tool 39. Also in this case, since the wires 11 and 12 can be bent without applying an excessive load by the wire hooking tool 39, a short circuit between the wires 11 and 12 and electrodes having different potentials (for example, 7b and 7c) can be suppressed.
  • FIG. 16 shows an example of a two-line common mode choke coil 1G using a core 2 in which the width dimension of the flange parts 4 and 5 and the width dimension of the core part 3 are substantially the same. Portions that are the same as or correspond to those in FIG. In this case, the start portions 10a and 11a of the wires 10 and 11 are connected to the electrodes 6a and 6b in the core axial direction as in FIG. 1, but the end portions 10b and 11b of the wires 10 and 11 are Both are connected to the electrodes 7a and 7b in an oblique direction with respect to the core axis direction.
  • the reason why the end portion 10b of the wire 10 is connected to the electrode 7a in an oblique direction is due to bending by the wire hooking tool as in the above embodiment, but the end portion 11b of the wire 11 is The reason why it is connected to the electrode 7b in an oblique direction is that the winding end position 3b of the core part 3 and the center of the electrode 7b are offset in the width direction (X direction).
  • the example in which the one end side collar portion of the core 2 is chucked by the spindle chuck 21 and the other end side collar portion is not chucked is shown.
  • a chuck mechanism may be provided, and the support base 30 may be configured to be driven or integrally rotated with respect to the spindle chuck 21.
  • the wire hook and the operating device thereof may be provided on the support base 30 or may be provided on another fixing portion.
  • the step of inserting the wire hook into the groove is performed before the step of fixing the starting wire portion on the electrode or the core portion. It may be before the step of winding the wire.
  • the wire hook used in the 2-line common mode choke coil and its operating device can be applied to a 3-line common mode choke coil and a pulse transformer, and the spacer portion provided in the 3-line common mode choke coil is It can also be applied to 2-line common mode choke coils and pulse transformers.

Abstract

Le problème décrit par l'invention est de pourvoir à un procédé d'enroulement de multiples fils et un dispositif d'enroulement de multiples fils qui rendent possible de réduire les dommages causés à des fils et le risque de courts-circuits entre ces fils et des électrodes à des potentiels différents. La solution de l'invention concerne un procédé d'enroulement dans lequel des sections initiales d'une pluralité de fils sont d'abord guidées de l'extérieur à l'intérieur d'une bride présente sur une extrémité d'une partie centrale, et sont ensuite disposées sur le dessus d'électrodes présentes sur ladite bride et y sont connectées. Les fils sont guidés latéralement par rapport à l'axe de la partie centrale et sont enroulés ensemble autour d'une section de partie centrale d'enroulement. Ensuite, un accessoire d'accrochage de fil est introduit dans une rainure ménagée dans une bride présente sur l'autre extrémité de la partie centrale, des sections finales des fils sont guidées de l'intérieur à l'extérieur de ladite bride, et une section de pointe de l'accessoire d'accrochage de fil est utilisée pour accrocher la ou les sections finales d'au moins un des fils mais pas tous et courber ladite ou lesdites sections finales tout en maintenant le ou les fils en tension. Les sections finales de la pluralité de fils sont ensuite disposées sur le dessus d'électrodes correspondantes sur la bride présente sur l'autre extrémité de la partie centrale et y sont connectées. Par courbure latérale de la ou des sections finales de fil, le risque de courts-circuits avec des électrodes à des potentiels différents est réduit.
PCT/JP2015/063734 2014-05-22 2015-05-13 Procédé d'enroulement de multiples fils, dispositif d'enroulement de multiples fils, et composant à bobine enroulée WO2015178263A1 (fr)

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TW201604905A (zh) 2016-02-01
JPWO2015178263A1 (ja) 2017-04-20

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