JP5309595B2 - Motor, reactor using conductive wire as coil, and method for manufacturing said conductive wire - Google Patents

Description

The present invention relates to a motor using a conducting wire as a coil, a reactor using a conducting wire as a coil, and a method for manufacturing the conducting wire .

As a conductive wire formed by integrating a plurality of strands and a wire used for a motor coil, there is Patent Document 1 below. The following Patent Document 1 is an invention related to an assembly conductor, and discloses a technique in which a plurality of conductor wires are integrated in an untwisted state.
JP 2007-227241 A

The invention disclosed in Patent Document 1 has the advantage that the generation of eddy currents can be suppressed and the conductor space factor in the collective conductor can be improved.
However, since it is a configuration in which the conductor wires are bundled in a non-twisted state, it is necessary to use a binder to prevent the integrated conductor wires from being scattered, and the production cost is high and the production efficiency is poor. There was a problem.

Therefore, the present invention solves the above-mentioned conventional problems, can reduce losses due to eddy currents, can improve heat dissipation and space factor, and can realize manufacturing cost savings and manufacturing efficiency. motor and a reactor made by using a wire that can be an object of the invention to provide a method for producing the conductor.

In the motor of the present invention, the cross section is composed of a plurality of regions, the boundaries of each region are composed of an insulating layer, and the surface of the conductive wire is composed of an insulating layer thicker than the insulating layer constituting the boundary of each region The conductive wire is used as a coil, and the conductive wire is formed in a state where each region constituting the cross section is twisted in the linear direction, and a plurality of regions constituting the cross section are formed in the central portion. The first feature is that the cross-sectional shape is a hexagonal shape, and the surrounding cross-sectional shape in contact with each side thereof is a polygon other than a hexagonal shape .

  According to the first feature of the present invention, since the cross section is composed of a plurality of regions and the boundary of each region is composed of an insulating layer, the plurality of regions constituting the cross section can be insulated. . By dividing the cross section by a plurality of insulating regions, eddy currents generated in the cross section can be divided, and excessive eddy currents can be prevented from being generated in the cross section of the conducting wire. Therefore, loss due to eddy current can be reduced. Furthermore, since the surface of the conducting wire is formed of an insulating layer that is thicker than the insulating layer that forms the boundary between the regions, the space factor of the conducting wire can be improved.

Therefore, by using such a conducting wire as a coil, it is possible to reduce the loss due to eddy current and to make the motor capable of improving the space factor.

In addition, since each region constituting the cross section of the conducting wire is twisted in the line direction, each region constituting the cross section is twisted in the line direction so that the respective regions are integrated and scattered. Can be prevented. Therefore, the respective regions can be integrated without using a binder.

The reactor of the present invention has an insulating layer whose cross section is composed of a plurality of regions, the boundary of each region is composed of an insulating layer, and the conductive wire surface is thicker than the insulating layer constituting the boundary of each region A conductor formed of a coil, wherein each of the regions constituting the cross-section is twisted in the linear direction, and a plurality of regions constituting the cross-section are in the center The second feature is that the cross-sectional shape of the part is hexagonal, and the peripheral cross-sectional shape in contact with each side is a polygon other than the hexagon .

According to the second feature of the present invention, the cross section is composed of a plurality of regions and the boundary between the regions is composed of an insulating layer, so that a plurality of regions constituting the cross section can be insulated from each other. . By dividing the cross section by a plurality of insulating regions, eddy currents generated in the cross section can be divided, and excessive eddy currents can be prevented from being generated in the cross section of the conducting wire. Therefore, loss due to eddy current can be reduced. Furthermore, since the surface of the conducting wire is formed of an insulating layer that is thicker than the insulating layer that forms the boundary between the regions, the space factor of the conducting wire can be improved.

Therefore, by using such a conducting wire as a coil, it is possible to reduce the loss due to eddy current and to make the reactor capable of improving the space factor.

In addition, since each region constituting the cross section of the conducting wire is twisted in the line direction, each region constituting the cross section is twisted in the line direction so that the respective regions are integrated and scattered. Can be prevented. Therefore, the respective regions can be integrated without using a binder.

Moreover, the manufacturing method of the conducting wire of this invention is a manufacturing method of the conducting wire of Claim 1 or 2, Comprising: The stranding process which twists the several strand by which the surface was insulation-coated in the wire direction to make a twisted wire And, the cross-sectional shape of the plurality of strands twisted by the stranded wire process is a cross-sectional shape in which the central portion is a hexagon, and the periphery in contact with each side thereof is a polygon other than a hexagon . The compression molding process compresses the cross section of the stranded wire, and the compression molding process compresses the insulating wire that forms the surface of the conductive wire so that the thickness of the insulating layer is greater than the thickness of the insulating layer that forms the surface of the wire. It has the 3rd characteristic that it has an insulation coating process which carries out insulation coating of the surface of the formed twisted wire.

According to the third feature of the present invention, since the plurality of strands whose surfaces are insulated and coated are twisted in the wire direction to form a stranded wire, the plurality of strands are effective. In particular, it can be a stranded wire. In addition, the cross-sectional shape of the plurality of strands twisted by the stranded wire process is a stranded wire so that the central portion is a hexagonal shape, and the periphery in contact with each side thereof is a polygonal shape other than a hexagonal shape. Therefore, the cross section of the stranded wire has a hexagonal shape at the center and a cross-sectional shape that is formed by a polygon other than the hexagonal shape in contact with each side. It can be effectively compression-molded. In addition, the stranded wire surface of the stranded wire that has been compression-molded by the compression molding process is insulated so that the thickness of the insulating layer that forms the surface of the conductive wire is thicker than the thickness of the insulating layer that forms the surface of the wire. Since the structure has an insulation coating step, the insulation surface of the stranded wire formed by compression molding is effectively insulated so as to be thicker than the thickness of the insulation layer constituting the surface of the strand. Can do.

Further, in the insulation coating step, the thickness of the insulating layer constituting the surface of the conducting wire is made thicker than the thickness of the insulating layer constituting the surface of the strand, whereby a conducting wire that can withstand the line voltage can be obtained. .

In addition to the third feature of the present invention described above, the method for producing a conducting wire of the present invention has a fourth feature that the compression molding in the compression molding step compresses the cross section of the stranded wire into a rectangle or a polygon. .

According to the fourth feature of the present invention, in addition to the operational effects of the third feature, the compression molding in the compression molding step is configured to compress the cross section of the stranded wire into a rectangle or a polygon . When conducting wires are used for coils, adjacent conducting wires can be brought into surface contact.

Without causing a gap between adjacent conductors I I, heat radiation of the coils, it is possible to improve the space factor.

According to motors and the reactor of the present invention, it is possible to Rutotomoni can reduce the loss due to eddy currents, a motor and a reactor capable of improving the space factor is.
Moreover, it can be set as the manufacturing method of the conducting wire which can reduce the loss by an eddy current, can improve heat dissipation, a space factor, and can realize cost saving of manufacturing cost and efficiency of manufacturing. .

  With reference to the following drawings, a conductor and a method for manufacturing the conductor, a motor using the conductor as a coil, and a reactor according to an embodiment of the present invention will be described for understanding of the present invention. However, the following description is an embodiment of the present invention, and does not limit the contents described in the claims.

  FIG. 1 is a perspective view of a conducting wire according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the conducting wire of FIG. FIG. 3 is a diagram showing a stranded wire constituting the conducting wire. FIG. 4 is a diagram for explaining a state in which a stranded wire is disposed in a mold and processed. FIG. 5 is a diagram showing a modification of FIG. FIG. 6 is a view showing a stator of a motor using a conducting wire as a coil. FIG. 7 is a diagram showing a modification of FIG. FIG. 8 is a view showing a reactor using a conducting wire as a coil.

  First, with reference to FIG. 1, the conducting wire 1 which concerns on the 1st Embodiment of this invention made the strand 11 the several strand 11 coat | covered with the insulating layer 12, and compression-molded the cross section to the predetermined shape. Thereafter, the surface is covered with an insulating material, and is constituted by a stranded wire 10 and an insulating layer 20.

As shown in FIGS. 1 to 3, the stranded wire 10 is formed by twisting a plurality of strands 11 covered with an insulating layer 12 and compressing them using a molding die in that state. In this way, by twisting a plurality of the strands 11 and forming the stranded wire 10, the strands 11 are constituted by a plurality of regions in the cross section of the stranded wire 10, and the boundary of each region is constituted by the insulating layer 12. The twisted wire 10 can be made. Further, a plurality of strands 11 can be integrated without using a binder. Therefore, it is possible to reduce the manufacturing cost and to make the conductive wire 1 with high manufacturing efficiency.
Any method may be used for the compression molding as long as the cross section of the stranded wire 10 can be compression molded into a predetermined shape. For example, as shown in FIG. 4, a drawing process such as die drawing using a forming die 30 having a square die hole 31 can be used. By making the drawing process in this way, the cross section of the stranded wire 10 can be easily formed into the shape of the die hole 31 by passing the stranded wire 10 through the die hole 31 regardless of the cross-sectional shape of the stranded wire 10. Can be compression molded. Therefore, a manufacturing process can be simplified and it can be set as the conducting wire 1 with sufficient manufacturing efficiency.

In addition, as shown in FIG. 5, it is possible to perform hole rolling using a hole 32 and a roller 33. By making the hole rolling in this way, the cross section of the stranded wire 10 can be easily made into the shape of the hole 32 by passing the stranded wire 10 through the hole 32 regardless of the cross-sectional shape of the stranded wire 10. It can be compression molded. Therefore, a manufacturing process can be simplified and it can be set as the conducting wire 1 with sufficient manufacturing efficiency. Moreover, since the strand 11 which comprises the twisted wire 10 is not rubbed, it becomes possible to maintain an insulation state. Moreover, the compositional deformation of the winding and the space factor of the conductor can be improved.
Note the cross-sectional shape of the twisted wire 10 after compression molding, it is desirable that the rectangle or polygon. Thus, by making the cross-sectional shape of the twisted wire 10 rectangular or polygonal, when the conducting wire 1 is used as a coil, the adjacent conducting wire 1 can be brought into surface contact. Therefore, a space | gap is not produced between the adjacent conducting wires 1, and the heat dissipation of a coil and a space factor can be improved.
The stranded wire 10 is compression-molded as described above, and then the surface of the stranded wire 10 is covered with the insulating layer 20 to form the conductive wire 1.

As the strand 11 , for example, copper, aluminum, silver, gold, or an alloy thereof can be used. Moreover, the number of the strands 11 which comprise the twisted wire 10 can be changed suitably. Moreover, if the cross-sectional shape of the strand 11 which comprises the twisted wire 10 after compression molding is a hexagon in the center part and the surrounding cross-sectional shape which touches each side is a polygon other than a hexagon, the strand 11 of The guide diameter can also be changed as appropriate.

The insulating layer 12 is an insulating layer that covers the surface of the wire 11. The insulating material used for the insulating layer 12 may be any material as long as it is normally used. However, in consideration of the processing load and the suppressing power against the coil eddy current, a conductive oxide film such as copper oxide, nichrome, It is desirable to use a high resistance metal such as Constantan or an enamel material. In particular, copper oxide is preferable because an insulating film can be easily formed. Thus, it can be set as the conducting wire 1 with sufficient manufacturing efficiency by using copper oxide.
The thickness of the insulating layer 12 may be any thickness as long as it can divide the eddy current generated in the cross section, but considering the deterioration of heat conduction between the strands 11 and the decrease in the space factor, It is desirable to set it as 0.01 mm or less.

The insulating layer 20 is an insulating layer that covers the surface of the compression-molded stranded wire 10. As shown in FIGS. 1 and 2, the insulating layer 20 is covered with a thickness greater than the thickness of the insulating layer 12 that covers the strands 11 constituting the conducting wire 1. By setting it as such a structure, it can be set as the conducting wire 1 which can endure line voltage. Moreover, while being able to protect the conducting wire 1 from an injury, it can be set as the conducting wire 1 with heat resistance. Moreover, when the conducting wire 1 is used for a coil, loss due to eddy current can be reduced, heat dissipation and space factor can be improved, manufacturing cost can be suppressed, and the conducting wire 1 with good production efficiency can be obtained.
The insulating material used for the insulating layer 20 may be any material as long as it is normally used, such as a resin such as polyimide resin or amideimide resin, or an enamel material. Also, the coating method on the stranded wire 10 may be any method as long as it is normally used as an insulating coating method such as dipping, electrodeposition coating, oxide film, plating, and the like.

Next, with reference to FIG. 6, the stator 50 of the motor which concerns on the 2nd Embodiment of this invention is demonstrated.
The stator 50 is a radial motor stator and uses the conductive wire 1 as the coil 40. Thus, by setting it as the structure which uses the conducting wire 1 for the stator 50 as the coil 40, while being able to reduce the loss by an eddy current, it can be set as the radial motor which can improve a space factor.

Next, a stator 60, which is a modification of the stator 50, will be described with reference to FIG.
The stator 60 is a stator of an axial motor, and uses the conducting wire 1 as the coil 40. Thus, by setting it as the structure which uses the conducting wire 1 for the stator 60 as the coil 40, while being able to reduce the loss by an eddy current, it can be set as the axial motor which can improve a space factor.
In addition, as a motor which uses the conducting wire 1 as the coil 40, it is not restricted to a radial motor and an axial motor, What kind of motor may be sufficient.

Next, a reactor 70 according to a third embodiment of the present invention will be described with reference to FIG.
The reactor 70 uses the conducting wire 1 as the coil 40. Thus, by setting it as the structure which uses the conducting wire 1 for the reactor 70 as the coil 40, while being able to reduce the loss by an eddy current, it can be set as the reactor which can improve a space factor.

  The present invention can be used as a conductive wire for various electric wires, various coils, coils for a hybrid vehicle motor, and the like.

It is a perspective view of the conducting wire concerning the embodiment of the present invention. It is sectional drawing of FIG. It is a figure which shows the twisted wire which comprises conducting wire. It is a figure explaining the state which arrange | positions and processes a twisted wire in a shaping | molding die. It is a figure which shows the modification of FIG. It is a figure which shows the division | segmentation stator of the motor which used conducting wire as a coil. It is a figure which shows the modification of FIG. It is a figure which shows the reactor which used conducting wire as a coil.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Conductor 10 Stranded wire 11 Strand 12 Insulating layer 20 Insulating layer 30 Mold 31 Die hole 32 Hole 33 Roller 40 Coil 50 Stator 60 Stator 70 Reactor

Claims (4)

As a coil, the cross section is composed of a plurality of regions, the boundaries of each region are composed of insulating layers, and the surface of the conductive wire is composed of an insulating layer that is thicker than the insulating layers that constitute the boundaries of the respective regions. The conductive wire is configured such that each region constituting the cross section is twisted in the line direction, and the plurality of regions constituting the cross section are hexagonal in cross section at the center. The motor is characterized in that the peripheral cross-sectional shape in contact with each side is formed of a polygon other than a hexagon . As a coil, the cross section is composed of a plurality of regions, the boundaries of each region are composed of insulating layers, and the surface of the conductive wire is composed of an insulating layer that is thicker than the insulating layers that constitute the boundaries of the respective regions. In the reactor, the conductive wire is formed in a state in which each region constituting the cross section is twisted in the linear direction, and a plurality of regions constituting the cross section have a hexagonal cross-sectional shape at the center. The reactor is characterized in that the surrounding cross-sectional shape in contact with each side is formed of a polygon other than a hexagon . It is the manufacturing method of the conducting wire of Claim 1 or 2, Comprising: The stranding process which twists the several strand by which the surface was insulation-coated in the wire direction to make a twisted line, and was twisted by the said twisting process Compression molding that compresses the cross-section of the stranded wire so that the cross-sectional shape of the plurality of strands is a hexagonal shape at the center and the perimeter that contacts each side is a polygon other than a hexagonal shape. A stranded wire surface of the stranded wire compression-molded by the compression molding step so that the thickness of the insulating layer constituting the conductive wire surface is thicker than the thickness of the insulating layer constituting the wire surface. A method for manufacturing a conducting wire, comprising: an insulating coating step for insulating coating.   The method of manufacturing a conducting wire according to claim 3, wherein the compression molding in the compression molding step is compression molding of a cross section of the stranded wire into a rectangle or a polygon.

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