JP2009021127A - Cluster conductor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cluster conductor which retains an insulating property, and improves a conductor space factor as much as possible. <P>SOLUTION: The cluster conductor is made by integrating together a plurality of conductor lines each having a partial sectional shape given by dividing the overall sectional shape. The plurality of conductor lines consist of a plurality of first conductor lines 1 arranged inside, and a plurality of second conductor lines 3 arranged to encircle the first conductor lines 1. Each of the first conductor lines 1 is sheathed with a first insulating film 2, and each of the second conductor lines 3 is sheathed with a second insulating film 4 formed to be thicker than the first insulating film 2. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an assembly conductor, and more particularly to an assembly conductor in which a plurality of conductor wires are bundled and configured integrally.

  As a magnet wire used for a coil of an electromagnetic machine instrument, a collective conductor in which a plurality of conductor wires are bundled and configured integrally has been proposed.

For example, Patent Document 1 discloses a self-bonding dislocation electric wire in which a plurality of self-bonding rectangular enamel wires are gathered, dislocated, and twisted and wound around an outer periphery of a twisted wire with an insulating tape spirally wound. A fusible rectangular enameled wire is a self-lubricating / self-fusing rectangular enameled wire. According to Patent Document 1, according to this self-bonding dislocation wire, the wires are excellent in mutual slipping during the manufacturing operation of the dislocation wire and the coil winding operation, and the coil is heat-sealed. It is described that the strands can be firmly heat-sealed.
Japanese Patent Laid-Open No. 11-203948

  In recent years, gathering conductors have attracted attention as magnet wires for electric vehicle motors. In order to improve the performance of the motor in this collective conductor for motor applications, it is necessary to improve the proportion of the area of the conductor part in the cross section, that is, the conductor space factor, and maintain the insulation of the collective conductor. There is a need to. Here, since the insulating property of the collective conductor depends on the thickness of the insulating portion provided around the conductor portion, the improvement of the conductor space factor and the maintenance of the insulating property in the collective conductor are a trade-off. There is a relationship. In addition, although the method of maintaining the insulating property of the collective conductor by winding the collective conductor in an insulating tape such as a polyimide film in a spiral manner has been put into practical use, its workability is low, and the insulating tape Since an unnecessary space is easily formed when the wire is wound, there is a possibility that the insulating property of the collective conductor becomes non-uniform or the conductor space factor decreases.

  This invention is made | formed in view of this point, The place made into the objective is to maintain insulation in an assembly conductor, and to improve a conductor space factor as much as possible.

  In order to achieve the above object, the present invention provides a first insulating film in which a second insulating film covering each second conductor line disposed on the outer periphery of the collective conductor covers each first conductor line disposed inside the collective conductor. It is made thicker than the insulating film.

  Specifically, the collective conductor according to the present invention is a collective conductor in which a plurality of conductor wires each having a partial cross section obtained by dividing the overall cross sectional shape are integrated, wherein the plurality of conductor wires are: A plurality of first conductor lines arranged inside and a plurality of second conductor lines arranged so as to cover the periphery of the plurality of first conductor lines, each of the first conductor lines being a first Each of the second conductor lines is covered with a second insulating film formed thicker than the first insulating film.

  According to said structure, since the relatively thin 1st insulating film is provided between each 1st conductor lines in the inside of an assembly conductor, the ratio for which the insulation part accounts in the cross section of an assembly conductor Becomes lower, and the conductor space factor of the collective conductor is improved. Moreover, since the relatively thick second insulating film provided between the second conductor lines is disposed on the peripheral wall of the collective conductor, the insulation between the collective conductors is maintained. Here, in a general collective conductor, since the current in each conductor line flows along its length direction, the insulation between the collective conductors is regarded as more important than the insulation between the conductor lines. Therefore, the conductor space factor is improved by the internal structure of the collective conductor in which the first conductor lines are arranged, and the insulation is maintained by the outer peripheral structure of the collective conductor in which the second conductor lines are arranged. In addition, it is possible to improve the conductor space factor as much as possible while maintaining insulation in the collective conductor.

  The first insulating film may be a binding material for binding the first conductor wires to each other.

  According to said structure, since the 1st insulating film is a binder, the insulation of each 1st conductor wire is hold | maintained by the binder for binding each 1st conductor wire mutually. Therefore, the conductor space factor of the collective conductor is improved as compared with the case where the insulating film, the binder, and the insulating film are laminated between the first conductor wires to maintain the insulation of the first conductor wires.

  The first insulating film includes an insulating thin film for covering and insulating the first conductor wires, and a binder for binding the first conductor wires covered with the insulating thin film to each other. You may have.

  According to said structure, since the insulating thin film and the binder are laminated | stacked in order with respect to each 1st conductor wire, while being able to improve the insulation in each 1st conductor wire, an insulating thin film Becomes the base film of the binder, so that the adhesive force of the binder to each first conductor wire is improved.

  The insulating thin film may be formed by electrodeposition coating.

  According to the above configuration, since the insulating thin film is formed by electrodeposition coating, the insulating thin film can be thinned to, for example, about 0.5 μm to 1.5 μm simply by adjusting the applied voltage during electrodeposition coating. It becomes possible to form uniformly and the fall of the conductor space factor in the assembly conductor by formation of an insulating thin film is suppressed.

  The second insulating film includes an insulating thick film for covering and insulating each of the second conductor wires, and a binder for binding the second conductor wires covered with the insulating thick film to each other. And may be provided.

  According to said structure, since the insulating thick film and the binder are laminated | stacked in order with respect to each 2nd conductor wire, it becomes possible to improve the insulation in each 2nd conductor wire.

  The insulating thick film may be formed by electrodeposition coating.

  According to the above configuration, since the insulating thick film is formed by electrodeposition coating, the insulating thick film can be thickened to, for example, about 10 μm to 20 μm at a time only by adjusting the applied voltage at the time of electrodeposition coating. It becomes possible to form uniformly, and the insulating property of an assembly conductor is maintained.

  The cross-sectional area of each said 2nd conductor line may be smaller than the cross-sectional area of each said 1st conductor line.

  According to said structure, since the cross-sectional area of each 2nd conductor line is smaller than the cross-sectional area of each 1st conductor line, it contributes to maintenance of the insulation of an assembly conductor in the cross section of an assembly conductor. The proportion of the insulating film is reduced, and the conductor space factor of the collective conductor is improved.

  The cross-sectional area of each said 1st conductor line may be smaller than the cross-sectional area of each said 2nd conductor line.

  According to said structure, since the cross-sectional area of each 1st conductor line is smaller than the cross-sectional area of each 2nd conductor line, the surface area of the conductor which each 1st conductor line forms in an assembly conductor becomes large. Therefore, even in a high frequency environment where current tends to concentrate on the surface of the conductor due to the skin effect, it is possible to flow current with low loss.

  Each of the conductor lines may be arranged so that the interface of the first conductor lines does not coincide with the interface of the second conductor lines.

  According to the above configuration, since the interface of each first conductor line and the interface of each second conductor line do not match, the interface of each first conductor line and the interface of each second conductor line match. It is possible to suppress the dispersion of the conductor wires when the collective conductor is bent, compared to the case where the assembly conductor is bent.

  The cross section of each conductor line may be formed in a rectangular shape.

  According to the above configuration, since the cross section of each conductor wire is rectangular, each conductor wire is easily aligned in the width direction and height direction by overlapping the side surfaces of each conductor wire, It becomes possible to improve the conductor space factor in the conductor.

  Each said conductor wire may be integrated in the untwisted state.

  According to said structure, since each conductor wire is a non-twisted state, formation of a dead space is suppressed and generation | occurrence | production of an eddy current is suppressed in an assembly conductor.

  Each of the first conductor lines may be configured to be supplied with a relatively high voltage, and each of the second conductor lines may be supplied with a relatively low voltage.

  According to said structure, a relatively high voltage is supplied to each 1st conductor line which comprises the inside of an assembly conductor, and a relatively low voltage is supplied to each 2nd conductor line which comprises the surrounding wall of an assembly conductor. Therefore, the potential difference between the collective conductor and, for example, each slot of the stator core that accommodates the collective conductor is reduced, and the electrical performance and reliability of the collective conductor can be improved.

  According to the present invention, the second insulating film covering each second conductor line disposed on the outer periphery of the collective conductor is thicker than the first insulating film covering each first conductor line disposed inside the collective conductor. Since it is formed, it is possible to maintain the insulating property in the collective conductor and improve the conductor space factor as much as possible.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following embodiments.

Embodiment 1 of the Invention
1 to 5 show Embodiment 1 of the collective conductor according to the present invention.

  FIG. 1 is a perspective view of the collective conductor 10a of the present embodiment.

  As shown in FIG. 1, the collective conductor 10 a has a plurality of first conductor wires arranged in a non-twisted state in, for example, 5 rows (lateral direction in the figure) × 2 columns (vertical direction in the figure) in the cross section. 1, a binding material 2 provided between the first conductor wires 1, and a plurality of rows arranged in a non-twisted state so as to cover the periphery of the assembly line of the first conductor wires 1 of 5 rows × 2 columns Second conductor wire 3, insulating thick film 4 provided so as to cover each second conductor wire 3, and binder provided between each second conductor wire 3 covered with insulating thick film 4 And 5. Here, the first conductor wires 1 are bonded and integrated with each other by a binding material 2 formed on the surface thereof. Further, the second conductor lines 3 are bound to each other by a binding material 5 formed on the insulating thick film 4 on the surface, and are connected to an aggregate line of the first conductor lines 1 of 5 rows × 2 columns. It is worn and integrated.

  The first conductor wire 1 and the second conductor wire 3 each have a rectangular cross section, and are linear with a conductive material such as copper, aluminum, silver, iron, gold, or alloys thereof. It is configured. In addition, each cross section of the 1st conductor wire 1 and the 2nd conductor wire 3 is a partial shape which divided | segmented the rectangular whole cross-sectional shape of the collective conductor 10a.

  The first conductor wire 1 (and the second conductor wire 3) having the rectangular cross section has, for example, a square cross section whose corners are at right angles, as shown in FIG. Conductor wire 1a, as shown in FIG. 2 (b), conductor wire 1b having a rectangular cross section with a right corner, and as shown in FIG. 2 (c), a substantially square shape with a corner having an arc shape. Conductor wire 1c having a transverse cross section, conductor wire 1d having a substantially rectangular transverse cross section with a circular arc as shown in FIG. 2 (d), and one opposing side as shown in FIG. 2 (e) The conductor line 1e having a track-like cross section in which the pair of sides parallel to each other and the other pair of opposite sides is arcuate is selected.

  Further, the cross-sectional shape of each of the first conductor wire 1 and the second conductor wire 3 is preferably the above-described rectangular shape from the viewpoint of the conductor space factor, productivity, etc., but other polygons such as a triangle and a hexagon. It may be.

  Further, the cross-sectional shapes of the first conductor line 1 and the second conductor line 3 may not be all the same along the length direction, for example, the cross-sectional area is enlarged or reduced along the length direction. It may be a similar shape.

  Further, in the first conductor wire 1 and the second conductor wire 3, by making the length of the long side 1 to 1.5 times (preferably 1 to 1.2 times) the length of the short side, When arranged in m rows x n columns (m and n are natural numbers), the conductor space factor is improved and an insulated conductor with a large surface area can be obtained, so that the motor used in an electric vehicle such as a hybrid vehicle can be reduced in size and weight. Can be realized.

The length of one side in each cross section of the first conductor wire 1 and the second conductor wire 3 is, for example, 0.03 mm to 2 mm (preferably 0.05 mm to 1 mm), and 0.03 mmφ to 2.3 mmφ. The cross-sectional area is 0.0007 mm ² to ⁴ mm ² .

  In addition, each 1st conductor line 1 and each 2nd conductor line 3 in the assembly conductor 10a are comprised combining the conductor wire (1a) which has a square cross section, and the conductor wire which has a triangular cross section etc., for example. And not all have the same shape.

  As the material of the binders 2 and 5, as a binder, a polyamide-based resin, a polyvinyl butyral-based resin, an epoxy-based resin, a polyester-based resin, or an alcohol-soluble modified polyamide-based material can be used. Examples of the adhesive include alcohol-based resins, and examples of the adhesive include epoxy-based, polyimide-based, phenol-based, polyester-based, and urethane-based resins. In addition, since the binders 2 and 5 are comprised by the resin which has the above insulation, the insulation between each 1st conductor wire 1 and each 2nd conductor wire 3 in the assembly conductor 10 is improved. be able to.

  The film thickness of the binders 2 and 5 is 0.5 μm to 5 μm (preferably 1 μm to 3 μm). The fusing agent is applied by dip coating or the like, and the adhesive is a roll coater 21a (see FIG. 3) to which the adhesive is supplied from the outer peripheral wall, and an impregnated felt to which the adhesive is supplied from the contact surface. It is applied by 21b (see FIG. 4), a spray 21c (see FIG. 5) supplied with an adhesive from a nozzle, or the like. Here, the binding materials 2 and 5 can be fixed to the first conductor wire 1 and the insulating thick film 4 as long as the first conductor wire 1 and the second conductor wire 3 can be fixed in the collective conductor 10a. The two conductor wires 3 may not be formed uniformly on the surface. For example, the binders 2 and 5 are partially formed in the shape of dots or stripes on the surface of each first conductor wire 1 and the surface of each second conductor wire 3 covered with the insulating thick film 4. Also good. In this case, the first conductor lines 1 and the second conductor lines 3 are insulated from each other by the space formed between the first conductor lines 1 and the second conductor lines 3. Further, since the same electric potential is supplied to each first conductor wire 1 constituting the assembly conductor 10a and current does not easily flow between the first conductor wires 1, depending on the usage form of the assembly conductor 10a, The insulation between one conductor line 1 may be low.

  The insulating thick film 4 is formed of an acrylic, epoxy, polyester, urethane, polyimide, or other resin using, for example, electrodeposition coating, or an amideimide, urethane, ester, using dip coating. It is made of an imide-based or polyimide-based resin. In particular, the insulating thick film 4 formed by electrodeposition coating is preferably an acrylic resin having excellent insulating properties, and the insulating thick film 4 formed by dip coating is excellent in heat resistance and is made of a general material. Some amidoimide resins are preferred. Further, the thickness of the insulating thick film 4 is about 5 μm to 30 μm (preferably 10 μm to 20 μm), and may have an insulating property of AC 1 kV or more (preferably AC 2 kV or more).

  The assembly conductor 10a having the above-described configuration is, for example, arranged in a plurality of layers in each slot groove formed in the stator core constituting the motor.

  Next, an example is given and demonstrated about the manufacturing method of the assembly conductor 10a of the said structure.

  First, for example, a copper wire is drawn to produce a first conductor wire 1 having a square cross section with a side of 0.30 mm and a second conductor wire 3 having a square cross section with a side of 0.27 mm. .

  Subsequently, after forming the binder 2 on the surface of the manufactured first conductor wire 1 by dip-coating, for example, an epoxy varnish with a film thickness of about 2 μm as a fusing agent, the first conductor wire 1 For example, it cut | disconnects every 5 m in length, and divides it into plurality.

  Then, an insulating thick film 4 is formed on the surface of the manufactured second conductor wire 3 by, for example, electrodeposition-coating acrylic varnish to a film thickness of about 15 μm. Further, after forming the binder 5 on the surface of the second conductor wire 3 on which the insulating thick film 4 is formed by dip-coating, for example, an epoxy varnish with a film thickness of about 2 μm as a fusion agent, The two conductor wires 3 are cut into, for example, a plurality of lengths every 5 m.

  Subsequently, as shown in FIG. 1, 10 first conductor wires 1 each having a binding material 2 formed on the surface thereof are aligned in an untwisted state in 5 rows × 2 columns, and the aligned assembly lines are arranged. By aligning the 18 second conductor wires 3 each having the binder 5 formed on the surface thereof with the insulating thick film 4 around each other in an untwisted state, and then heating to about 200 ° C., The binders 2 and 5 of the adjacent first conductor wire 1 and second conductor wire 3 are fused and integrated with each other.

  As described above, the collective conductor 10a of the present embodiment can be manufactured.

  As described above, according to the collective conductor 10a of the present embodiment, the binder 2 is formed as a relatively thin first insulating film between the first conductor wires 1 inside the collective conductor 10a. Since it is provided, the proportion of the insulating portion in the cross section of the collective conductor 10a is reduced, and the conductor space factor of the collective conductor 10a can be improved. Further, since the insulating thick film 3 and the binding material 5 are arranged as the relatively thick second insulating film provided between the second conductor wires 3 on the peripheral wall of the collective conductor 10a, the collective conductor 10a. The insulation between each other can be maintained. Here, in a general collective conductor, since the current in each conductor line flows along its length direction, the insulation between the collective conductors is regarded as more important than the insulation between the conductor lines. Therefore, the conductor space factor is improved by the internal structure of the collective conductor 10a in which the first conductor lines 1 are arranged, and the insulation is maintained by the outer peripheral structure of the collective conductor 10a in which the second conductor lines 3 are arranged. As a result, the conductor space factor can be improved as much as possible while maintaining insulation in the collective conductor 10a.

  Moreover, according to the collective conductor 10a of this embodiment, since the insulation of each 1st conductor wire 1 is hold | maintained by the binder 2 for mutually bonding each 1st conductor wire 1, each, for example, each The conductor space factor of the collective conductor can be improved as compared to the case where the insulating film, the binder, and the insulating film are laminated between the first conductor wires to maintain the insulation of each first conductor wire.

  Moreover, according to the collective conductor 10a of this embodiment, since the insulating thick film 4 and the binder 5 are laminated | stacked in order with respect to each 2nd conductor wire 3, the insulation in each 2nd conductor wire 3 is provided. Can be improved.

  Moreover, according to the collective conductor 10a of this embodiment, since the insulating thick film 4 is formed by electrodeposition coating, the insulating thick film can be applied at a time, for example, by adjusting the applied voltage at the time of electrodeposition coating. It can be formed as thick and uniform as 10 μm to 20 μm, and the insulating property of the collective conductor 10a can be maintained.

  Moreover, according to the collective conductor 10a of this embodiment, since the cross section of each 1st conductor line 1 and each 2nd conductor line 3 is a rectangular shape, each 1st conductor line 1 and each 2nd conductor line By superimposing the three side surfaces, the first conductor lines 1 and the second conductor lines 3 are easily aligned in the width direction and the height direction, and the conductor space factor in the collective conductor 10a can be improved.

  Moreover, according to the collective conductor 10a of this embodiment, since each 1st conductor wire 1 and each 2nd conductor wire 3 are a non-twisted state, while suppressing formation of a dead space in the collective conductor 10a, eddy current Can be suppressed.

  In addition, the collective conductor 10a of the present embodiment is configured such that a relatively high voltage is supplied to each first conductor wire 1 and a relatively low voltage is supplied to each second conductor wire 3. May be. Accordingly, the potential difference between the collective conductor 10a and, for example, each slot of the stator core that accommodates the collective conductor 10a is reduced, and the electrical performance and reliability of the collective conductor can be improved.

<< Embodiment 2 of the Invention >>
FIG. 6 is a perspective view of the collective conductor 10b of the present embodiment. In addition, in each following embodiment, the same code | symbol is attached | subjected about the same part as FIGS. 1-5, and the detailed description is abbreviate | omitted.

  As shown in FIG. 6, the collective conductor 10 b has a plurality of first conductor wires arranged in a non-twisted state in, for example, 6 rows (lateral direction in the figure) × 3 columns (vertical direction in the figure) in the cross section. 1, a binding material 2 provided between each first conductor wire 1, and a plurality of rows arranged in an untwisted state so as to cover the periphery of the assembly line of the first conductor wires 1 of 6 rows × 3 columns Second conductor wire 3, insulating thick film 4 provided so as to cover each second conductor wire 3, and binder provided between each second conductor wire 3 covered with insulating thick film 4 And 5.

  The cross section of each first conductor line 1 is, for example, a square having a side of about 0.30 mm, and the cross section of each second conductor line 3 is, for example, a square having a side of about 0.10 mm. As shown in FIG. 6, the cross sectional area of the conductor wire 3 is smaller than the cross sectional area of each first conductor wire 1.

  The assembly conductor 10b having the above configuration can be manufactured by changing the size and the number of arrangement of the conductor wires of the first embodiment, and therefore detailed description of the manufacturing method is omitted.

  According to the collective conductor 10b of the present embodiment, in addition to the effects of the first embodiment, the cross-sectional area of each second conductor line 3 is smaller than the cross-sectional area of each first conductor line 1, so the collective conductor The proportion of the second insulating film (insulating thick film 4 and binder 5) that contributes to maintaining the insulating properties of the collective conductor 10b in the cross section 10b is reduced, and the conductor space factor of the collective conductor is improved. be able to.

<< Embodiment 3 of the Invention >>
FIG. 7 is a perspective view of the collective conductor 10c of the present embodiment.

  As shown in FIG. 7, the collective conductor 10 c has a plurality of first conductor wires arranged in a non-twisted state in, for example, 10 rows (horizontal direction in the figure) × 5 columns (vertical direction in the figure) in the cross section. 1, a binder 2 provided between the first conductor wires 1, and a plurality of lines arranged in a non-twisted state so as to cover the periphery of the assembly line of the first conductor wires 1 of 10 rows × 5 columns Second conductor wire 3, insulating thick film 4 provided so as to cover each second conductor wire 3, and binder provided between each second conductor wire 3 covered with insulating thick film 4 And 5.

  The cross section of each first conductor line 1 is, for example, a rectangle having a length of about 0.10 mm × width of about 0.15 mm, and the cross section of each second conductor line 3 is, for example, a square having a side of about 0.25 mm. Therefore, the cross-sectional area of each first conductor line 1 is smaller than the cross-sectional area of each second conductor line 3 as shown in FIG.

  The assembly conductor 10c having the above-described configuration can be manufactured by changing the size and the number of arrangement of the respective conductor wires of the first embodiment, and thus detailed description of the manufacturing method is omitted.

  According to the collective conductor 10c of the present embodiment, in addition to the effects of the first embodiment, the cross-sectional area of each first conductor line 1 is smaller than the cross-sectional area of each second conductor line 3, so the collective conductor In 10c, the surface area of the conductor formed by each first conductor wire 1 is increased. Therefore, even in a high-frequency environment where current tends to concentrate on the surface of each first conductor wire 1 due to the skin effect, current can flow with low loss.

<< Embodiment 4 of the Invention >>
FIG. 8 is a perspective view of the collective conductor 10d of the present embodiment.

  As shown in FIG. 8, the collective conductor 10d has a plurality of first conductor wires arranged in a non-twisted state in, for example, 6 rows (horizontal direction in the figure) × 3 columns (vertical direction in the figure) in the cross section. 1, a binding material 2 provided between each first conductor wire 1, and a plurality of rows arranged in an untwisted state so as to cover the periphery of the assembly line of the first conductor wires 1 of 6 rows × 3 columns Second conductor wire 3, insulating thick film 4 provided so as to cover each second conductor wire 3, and binder provided between each second conductor wire 3 covered with insulating thick film 4 And 5.

  Since the cross section of each first conductor line 1 is, for example, a square having a side of about 0.30 mm, the binding interface of each first conductor line 1 and the binding interface of each second conductor line 3 coincide. For example, the cross section of each second conductor wire 3 is a rectangle of about 0.18 mm to 0.25 mm × 0.33 mm to 0.45 mm, for example.

  The assembly conductor 10d having the above-described configuration can be manufactured by changing the size and the number of arrangements of the respective conductor wires in the first embodiment, and thus detailed description of the manufacturing method is omitted.

  According to the collective conductor 10d of the present embodiment, in addition to the effects of the first embodiment, the binding interface of each first conductor wire 1 and the binding interface of each second conductor wire 3 do not match. As compared with the case where the binding interface of each first conductor line and the binding interface of each second conductor line coincide with each other, the dispersion of the conductor lines 1 and 3 when the collective conductor 10d is bent is suppressed. be able to.

<< Embodiment 5 of the Invention >>
FIG. 9 is a perspective view of the collective conductor 10e of this embodiment.

  As shown in FIG. 9, the collective conductor 10 e has a plurality of first conductor wires arranged in a non-twisted state in, for example, 4 rows (lateral direction in the figure) × 3 columns (vertical direction in the figure) in the cross section. 1, an insulating thin film 6 provided so as to cover each first conductor wire 1, a binder 2 provided between each first conductor wire 1 covered with the insulating thin film 6, and 4 rows × A plurality of second conductor wires 3 aligned in a non-twisted state so as to cover the periphery of the assembly lines of the first conductor wires 1 in three rows, and an insulating thick film provided so as to cover each second conductor wire 3 4 and a binding material 5 provided between the second conductor wires 3 covered with the insulating thick film 4.

  The insulating thin film 6 is formed of an acrylic, epoxy, polyester, urethane, polyimide, or other resin using, for example, electrodeposition coating, or an amideimide, urethane, esterimide using dip coating. It is made of a resin such as a system or a polyimide system. In particular, the insulating thin film 6 formed by electrodeposition coating is preferably an acrylic resin having excellent insulating properties, and the insulating thin film 6 formed by dip coating is excellent in heat resistance and is a general material, amideimide. System resins are preferred. The thickness of the insulating thin film 6 is about 0.5 μm to 3 μm (preferably 0.5 μm to 1 μm).

  Next, an example is given and demonstrated about the manufacturing method of the assembly conductor 10e of the said structure.

  First, for example, a copper wire is drawn to produce a first conductor wire 1 having a square cross section with a side of 0.30 mm and a second conductor wire 3 having a square cross section with a side of 0.27 mm. .

  Subsequently, on the surface of the produced first conductor wire 1, for example, an acrylic varnish is electrodeposited to a film thickness of about 0.75 μm to form the insulating thin film 6, and then the first conductor wire 1 is For example, it is cut every 5 m and divided into a plurality of pieces.

  Then, on the surface of the produced second conductor wire 3, for example, an acrylic varnish is electrodeposited to a film thickness of about 15 μm to form an insulating thick film 4, and then the second conductor wire 3 is, for example, Cut every 5 m and divide into multiple pieces.

  Further, the first conductor wire 1 on which the insulating thin film 6 is formed, and the predetermined conductors of the second conductor wire 3 on which the insulating thick film 4 is formed, that is, adjacent conductor wires (1 and 3) in the collective conductor 10e. By applying, for example, an epoxy varnish as an adhesive to a film thickness of about 2 μm on at least one side surface of the substrate using, for example, the roll coater 21a of FIG. 3, the impregnation felt 21b of FIG. 4, the spray 21c of FIG. Binders 2 and 5 are formed.

  Subsequently, as shown in FIG. 9, twelve first conductor wires 1 each having a binding material 2 formed on the surface thereof are aligned in an untwisted state in 4 rows × 3 columns, and the aligned aggregates are arranged. The 18 second conductor wires 3 each having a binding material 5 formed on the surface thereof are aligned in a non-twisted state around each of the first conductor wires adjacent to each other by heating to about 200 ° C. The binding materials 2 and 5 of the first and second conductor wires 3 are fused and integrated with each other.

  As described above, the collective conductor 10e of this embodiment can be manufactured.

  As described above, according to the collective conductor 10e of the present embodiment, the insulating thin film 6 and the connection are formed as a relatively thin first insulating film between the first conductor wires 1 inside the collective conductor 10e. Since the dressing 2 is provided, the proportion of the insulating portion in the cross section of the collective conductor 10e is reduced, and the conductor space factor of the collective conductor 10e can be improved. Further, since the insulating thick film 4 and the binding material 5 are arranged as the relatively thick second insulating film provided between the second conductor wires 3 on the peripheral wall of the collective conductor 10e, the collective conductor 10e. The insulation between each other can be maintained. Here, in a general collective conductor, since the current in each conductor line flows along its length direction, the insulation between the collective conductors is regarded as more important than the insulation between the conductor lines. Therefore, the conductor space factor is improved by the internal structure of the collective conductor 10e in which the first conductor lines 1 are arranged, and the insulation is maintained by the outer peripheral structure of the collective conductor 10e in which the second conductor lines 3 are arranged. Therefore, it is possible to maintain the insulating property in the collective conductor 10e and improve the conductor space factor as much as possible.

  Moreover, according to the collective conductor 10e of this embodiment, since the insulating thin film 6 and the binder 2 are laminated | stacked in order with respect to each 1st conductor wire 1, the insulation in each 1st conductor wire 1 is improved. In addition, since the insulating thin film 6 serves as a base film for the binder 2, the adhesive force of the binder 2 to each first conductor wire 1 can be improved. Furthermore, since the insulating thin film 6 and the binder 2 are sequentially laminated on each first conductor wire 1 and the insulating thick film 4 and the binder 5 are laminated on each second conductor wire 3 in sequence, each conductor wire 1 And the structure of 3 becomes the same, and the imbalance of the adhesiveness (binding) property in the inside and the outer periphery of the collective conductor 10e can be eliminated.

  Further, according to the collective conductor 10e of the present embodiment, since the insulating thin film 6 is formed by electrodeposition coating, the insulating thin film 6 can be reduced to, for example, 0. It can be thinly and uniformly formed to about 5 μm to 1.5 μm, and a decrease in the conductor space factor in the collective conductor 10 e due to the formation of the insulating thin film 6 can be suppressed.

  Moreover, according to the collective conductor 10e of this embodiment, since the adhesiveness of the insulating thin film 6 with respect to each 1st conductor wire 1 and the adhesiveness of the insulating thick film 4 with respect to each 2nd conductor wire 3 are high, when bent, Peeling of the film can be suppressed.

  Moreover, according to the collective conductor 10e of this embodiment, each 1st conductor wire 1 coat | covered by the relatively thin insulating thin film 6 is made inside, and each 2nd coat | covered by the relatively thick insulating thick film 4 is carried out. By merely arranging the conductor wires 3 on the outside, the insulation factor can be maintained and the conductor space factor can be improved, so that the collective conductor can be manufactured with high productivity.

  Here, in the collective conductor 110a of the comparative example corresponding to the collective conductor 10e of the present embodiment, as shown in FIG. 10, a plurality of conductor wires 101 each covered with the insulating thin film 102 are interposed via the binder 103. An insulating tape 104 such as a polyimide film is spirally overlapped and wound around the bonded assembly line. The collective conductor 110a has low workability, and an unnecessary space is easily formed when the insulating tape 104 is wound. Therefore, the insulation of the collective conductor 110a becomes uneven or the conductor space factor decreases. There is a fear. Here, if the thickness of the insulating tape 104 is reduced, winding becomes easier and workability is improved, but there is a possibility that the insulating property of the collective conductor 110a is lowered. Further, in the collective conductor 110 b of the comparative example, as shown in FIG. 11, UV curing is applied to the collective wire in which a plurality of conductor wires 101 each covered with an insulating thin film 102 are bonded through a binder 103. An insulating coating layer 105 such as resin is coated. In this collective conductor 110b, since the insulating coating layer 105 is likely to be thin at the corners, the insulation of the collective conductor 110b may be reduced.

  Moreover, according to the collective conductor 10e of this embodiment, since the insulating tape 104 and the insulating coating layer 105 having a binding force on the shape are not formed on the outer periphery, it is possible to provide a collective conductor that is easily bent.

  In each of the above-described embodiments, the configuration and the manufacturing method using a fusing agent or an adhesive as the binders 2 and 5 are exemplified. However, the present invention provides, for example, an adhesive imbalance inside and outside the assembly conductor. In order to solve this problem, a metal adhesive may be used as the binder 2 and a plastic adhesive may be used as the binder 5.

  As described above, the present invention can improve the conductor space factor in the collective conductor, and thus is useful for magnet wires for motor applications.

2 is a perspective view of a collective conductor 10a according to Embodiment 1. FIG. It is sectional drawing of the 1st conductor wire 1 (1a-1e) which comprises the collective conductor 10a. It is a schematic diagram of the roll coater 21a for apply | coating the adhesive material 2 to the 1st conductor wire 1. FIG. It is a schematic diagram of the impregnation felt 21b for apply | coating the adhesive material 2 to the 1st conductor wire 1. FIG. It is a schematic diagram of the spray 21c for applying the adhesive material 2 to the first conductor wire 1. It is a perspective view of the collective conductor 10b which concerns on Embodiment 2. FIG. It is a perspective view of the collective conductor 10c which concerns on Embodiment 3. FIG. It is a perspective view of the collective conductor 10d which concerns on Embodiment 4. FIG. It is sectional drawing of the assembly conductor 10e which concerns on Embodiment 5. FIG. It is sectional drawing of the conventional assembly conductor 110a. It is sectional drawing of the conventional assembly conductor 110b.

Explanation of symbols

1 First conductor wire 2 Binder (first insulating film)
3 Second conductor wire 4 Insulating thick film (second insulating film)
5 Binder (second insulating film)
6 Insulating thin film (first insulating film)
10a to 10e Collective conductor

Claims (12)

Each is a collective conductor in which a plurality of conductor wires having a cross section of a part of a shape obtained by dividing the entire cross section shape are integrated,
The plurality of conductor lines are constituted by a plurality of first conductor lines arranged inside and a plurality of second conductor lines arranged to cover the periphery of the plurality of first conductor lines,
Each of the first conductor wires is covered with a first insulating film,
Each said 2nd conductor line is covered with the 2nd insulating film formed thicker than the said 1st insulating film, The collective conductor characterized by the above-mentioned. In the collective conductor according to claim 1,
The collective conductor, wherein the first insulating film is a binding material for binding the first conductor wires to each other. In the collective conductor according to claim 1,
The first insulating film includes an insulating thin film for covering and insulating the first conductor wires, and a binder for binding the first conductor wires covered with the insulating thin film to each other. An assembly conductor characterized by comprising. In the collective conductor according to claim 3,
The collective conductor, wherein the insulating thin film is formed by electrodeposition coating. In the collective conductor according to claim 1,
The second insulating film includes an insulating thick film for covering and insulating each of the second conductor wires, and a binder for binding the second conductor wires covered with the insulating thick film to each other. And a collective conductor characterized by comprising: In the collective conductor according to claim 5,
The aggregate conductor is characterized in that the insulating thick film is formed by electrodeposition coating. In the collective conductor according to claim 1,
The cross-sectional area of each said 2nd conductor line is smaller than the cross-sectional area of each said 1st conductor line, The collective conductor characterized by the above-mentioned. In the collective conductor according to claim 1,
The cross-sectional area of each said 1st conductor wire is smaller than the cross-sectional area of each said 2nd conductor wire, The collective conductor characterized by the above-mentioned. In the collective conductor according to claim 1,
Each conductor line is arranged so that the interface of each said 1st conductor line and the interface of each said 2nd conductor line may not correspond. In the collective conductor according to claim 1,
A cross section of each conductor wire is formed in a rectangular shape. In the collective conductor according to claim 1,
Each conductor wire is integrated in a non-twisted state. In the collective conductor according to claim 1,
Each of the first conductor lines is configured to be supplied with a relatively high voltage, and each of the second conductor lines is configured to be supplied with a relatively low voltage. conductor.