JP2012033386A - Electric wire, winding wire and electric component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce, in a low-cost, high-performance electric wire, a problem of layer short-circuit between coil conductors.SOLUTION: An insulating layer, which forms a cross section in an interlayer direction when a conductor having a circular cross section or a substantially rectangular cross section is wound around for two or more layers as a winding wire, is provided in multiple layers or is configured to have a predetermined thickness so as to prevent layer short-circuit between the wires even if there are defects such as pinholes, while the other insulating layer is made thinner. The electric wire is then wound to obtain a winding wire.

Description

  The present invention relates to an electrical component including a magnetic body such as a composite magnetic element such as a reactor and the like used by energizing a conductive wire and a winding, a winding constituting the same, and a conductive wire used as the winding.

Some electrical components use magnetism that is generated by passing a current through a conductor.
Examples of electrical components using magnetism include magnetic elements, transformers, and motors.
These electric components are designed to withstand the values set with allowable voltage and allowable current based on electromagnetic theory.

In the design of electrical components, in addition to the structure, circuit, resistance value, inductance, potential difference between terminals, etc., it is important to set the dielectric strength at various locations.
For example, in a magnetic element, not only high insulation between a winding (coil) and a core, or between winding and ground, but also insulation between conductive wires serving as windings is important. This is because a dielectric breakdown occurs between the conductive wires of the windings, thereby causing problems such as performance degradation, burnout, and electric leakage.

  In addition, with respect to the dielectric breakdown of the winding, it is important to consider a layer short (interlayer short) that occurs between adjacent layers.

  In addition, as a necessary condition for the rapid spread prospect of environmentally friendly products in recent years, high efficiency of electrical components is required. In addition, cost reduction is strongly demanded.

  For example, Patent Documents 1 to 4 can be cited as examples of technologies related to electric parts using magnetism.

  Patent Document 1 discloses an invention in which an insulating coating of a conductor wire of a coil component is covered with a coating having low solder wettability on the outer periphery in addition to an existing coating. In this way, when the coil parts are heated, the solder is prevented from penetrating through the terminals, thereby preventing the destruction of the coating caused by the heat, thereby preventing the short circuit between the coil conductors. ing.

  Patent Document 2 discloses a coil component in which a winding is provided inside a resin that is an insulator, and is embedded in a magnetic core made of a magnetic powder and a resin together with the insulating resin. In the coil component, noise in the audible frequency band can be prevented by the above structure. Japanese Patent Application Laid-Open No. H10-228561 discloses a winding used for a coil component, which is an edgewise winding of a rectangular wire and a winding of a round wire.

  Patent Document 3 discloses a ring-shaped insulating coil plate that has been subjected to electrodeposition coating so that the thickness of the insulating coating layer at the cross-sectional corner is thicker than the thickness of the insulating coating layer at the flat cross-sectional portion. Also disclosed is a small and lightweight transformer coil formed by laminating the ring-shaped insulating coil plates. Patent Document 3 discloses the void problem of electrodeposition coating. The void problem is a phenomenon in which a void is present in a coating serving as an insulating layer, and dielectric breakdown occurs from the void.

  Further, Patent Document 4 describes a technique for making the thickness of the insulating coating layer uniform as described above.

JP 2009-010235 A JP 2006-004957 A JP 2004-152622 A Japanese Patent Laid-Open No. 03-159014

In patent document 1, the deterioration by the solder heat | fever of the insulation coating of a winding is reduced, and the short circuit which arises between conducting wires is eased.
However, design considerations associated with the manufacture of electrical components having a multi-layer winding structure include that voids, pinholes, and the like in coatings (covering: insulating layers) applied to conductive wires cannot be made zero. It is also important that it is not complete to eliminate conductor defects in inspection.

  For this reason, there is a possibility that a layer short-circuit may occur depending on the structure and operating conditions of the electrical component between the conductors of the winding wire, where there is no coating or a thinner thickness than the theoretical design value with a predetermined probability.

  For example, when a voltage is applied in a general multilayer winding structure as shown in FIG. 25, the possibility that a layer short circuit occurs cannot be excluded in design.

The two-layer winding shown in FIG. 25 is formed by forming a first-layer winding in a cylindrical shape with the winding axis as an axis from the top and then winding a second layer on the outer periphery from below.
In the two-layer winding, since the total number of turns is 20 turns and the voltage between terminals is 400V, the potential difference generated between adjacent lines (for example, 1 turn and 2 turns) in the winding order is 20V (400V / 20 Turn).
On the other hand, the first turn at the beginning of winding and the 20th turn at the end of winding are adjacent to each other as an interlayer, and the potential difference between the layers (between wires) is 400V.

  Here, when the discharge voltage in the atmosphere (approximately 3000 V / mm) is taken into consideration, the discharge is not performed if approximately 1/3 μm per 1 V between the conductors. If the thickness of the insulating coating previously applied to the conducting wire is 40 μm, a distance of 80 μm is secured between the conducting wires in two layers. That is, even in the worst case where the pinholes of the insulating coating face each other, no discharge between the lines occurs up to about 240V.

  From these facts, it can be said that a voltage of about 20 V generated between adjacent conductors in the winding order does not cause a short circuit even if there is a pinhole in the film. On the other hand, a layer short circuit may occur between layers having a potential difference exceeding 240 V, such as 400 V generated between the wire at the beginning and end of winding. This is not designed in any way.

  Moreover, even if it is set as the structure which fills between electric wires with liquid insulators, such as resin, and makes it harden | cure as it exists in patent document 2, an insulator is completely to the detail between all the electric wires. It is difficult to be filled. That is, it cannot be guaranteed that the pinholes can be eliminated by filling the gaps between the wires with a resin. In addition, it is practically difficult to inspect them, and it is difficult to say that the design eliminates the possibility of a layer short.

  Patent Document 3 states that the insulating performance is improved when the thickness of the insulating coating at the corner portion of the flat wire is thicker than the thickness of the flat portion. However, when the corner portion is thick, the result is the same as that when the flat portion has the same thickness in calculating the space factor. That is, the space factor is the same as when a thick film is formed on the entire circumference of the flat wire, and the performance as a winding is not good. These are also described in Patent Document 4.

  With respect to the space factor, for example, the above-described winding shown in FIG. 25 requires an insulating layer thickness of at least about 66 μm on one side to withstand a voltage of 400V. When an electric wire having such a coating is wound 10 turns per layer, the coating thickness in the height direction is about 1.3 mm. If the conductor diameter is about 3 mm, a loss of about 4.3% is generated with respect to a height of 30 mm of 10 turns of the conductor, and the heat conductivity of the coating is poor, so heat dissipation is also lowered, which is not desirable.

  In addition, as disclosed in Patent Document 2, when a flat wire is wound edgewise (flat rectangular wire) in a single layer, the voltage generated between all adjacent wires is low, and a layer short is not a problem in design. However, since the cost of flat wire and coiling is high, it is a factor that significantly hinders price reduction at this time.

  Further, in a device such as a transformer, a technique is known in which an insulating material such as a tape is sandwiched between layers in a winding process. However, a process cost for performing taping in the middle of coiling becomes a problem. In addition, a reduction in heat dissipation due to the presence of a tape material having low heat conductivity between the heat generating windings is unavoidable.

  In view of the above problems, an object of the present invention is to provide an electric wire, a winding, and an electrical component that can reduce a layer short between conductive wires at low cost.

  In order to solve the above problems, an electric wire having an insulating layer on the surface of a conducting wire according to the present invention is such that the insulating layer is provided thick in an eccentric manner in one direction orthogonal to the wire direction of the conducting wire. The insulating layer provided in a shape is characterized in that it is thicker than the other insulating layer.

  Further, in the winding wound in multiple layers according to the present invention, the insulating layer corresponding to the layer of the wound electric wire is formed thicker than the insulating layer in the other direction, and the thick insulating layer is the other insulating layer. A multilayer structure is formed on the surface of

  Moreover, the electrical component according to the present invention is characterized by being made by the winding described above.

  ADVANTAGE OF THE INVENTION According to this invention, the electric wire, winding, and electrical component which reduced the possibility that the layer short-circuit between the layers which arise on the structure of winding will arise can be provided. Moreover, according to this invention, the space factor of a winding axis direction can be improved.

2 is a cross-sectional view of a conducting wire in Embodiment 1. FIG. FIG. 3 is a cross-sectional view of windings in the first embodiment. 6 is a cross-sectional view of a conducting wire in Embodiment 2. FIG. FIG. 6 is a cross-sectional view on one side of a winding in the second embodiment. 6 is a cross-sectional view of a conducting wire in Embodiment 3. FIG. FIG. 6 is a cross-sectional view on one side of a winding according to a third embodiment. 6 is a cross-sectional view of a conducting wire in Embodiment 4. FIG. It is sectional drawing of the one side of the winding in Embodiment 4. 10 is a cross-sectional view of a conducting wire in Embodiment 5. FIG. FIG. 10 is a cross-sectional view of one side of a winding according to a fifth embodiment. 10 is a cross-sectional view of a conducting wire in Embodiment 6. FIG. It is sectional drawing of the one side of the winding in Embodiment 6. 10 is a cross-sectional view of a conducting wire in Embodiment 7. FIG. FIG. 10 is a cross-sectional view on one side of a winding according to a seventh embodiment. FIG. 10 is a cross-sectional view of a conducting wire in an eighth embodiment. FIG. 10 is a cross-sectional view of one side of a winding according to an eighth embodiment. It is explanatory drawing which shows the area which applies the insulating layer material in an insulating layer formation process. It is explanatory drawing which shows the several area | region which apply | coats insulating layer material in an insulating layer formation process. It is a schematic diagram which shows an example of conducting wire manufacturing process. It is a schematic diagram which shows another example of conducting wire manufacturing process. It is a schematic diagram which shows another example of conducting wire manufacturing process. It is sectional drawing of the line direction of the electric wire which illustrates the insulating layer formed. It is sectional drawing which shows the winding by which the space | interval was hardened with resin. It is sectional drawing which shows the electrical component in which the magnetic core of the winding was formed by the casting method of a magnetic body. It is sectional drawing which shows the structure of a two-layer winding.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
An example of the cross section of the electric wire in this invention is shown in FIG. Moreover, the cross section of the coil coiled using the electric wire is shown in FIG.
In FIG. 1, the electric wire is composed of a conducting wire 1 having a circular cross section, an insulating coating 2 serving as an insulating layer intentionally thick in one direction on the surface, and an insulating coating 3 covering the entire surface of the conductor. The insulating film 3 is provided as an insulating layer thinner than the insulating film 2. Insulating film 2 and insulating film 3 may be formed separately at the time of manufacture, or may be formed simultaneously. Note that the electric wire may not be circular, but may have a substantially circular shape or other shapes.

  As shown in the figure, the insulating coating 2 is formed thick in an eccentric manner in one direction orthogonal to the line direction of the conducting wire, and is formed so as to increase the thickness of the insulating layer more than the other. In addition, the thick insulating layer is additionally formed on the surface of the other insulating layer.

FIG. 2 is a cross-sectional view showing a winding obtained by coiling an electric wire so that the direction in which the insulating layer is thickly provided on the conducting wire is the outer periphery.
In the winding shown in FIG. 2, a thin insulating layer (insulating coating 3) is disposed between conductive wires forming the same layer. In addition, a thick insulating layer (insulating coating 2) is disposed between the layers of each winding.
By thus forming the insulating layer as an eccentric multilayer, even if there is a pinhole or the like in either of the insulating coating 2 and the insulating coating 3, the possibility of occurrence of a layer short can be reduced.

In addition, the thickness of the insulating coating 2 that is thickly provided in an eccentric shape may be designed so that it can withstand a voltage value applied between adjacent layers on a winding structure made using the electric wire. For example, the thickness of the insulating coating 2 formed between the conducting wire 1-1 and the conducting wire 1-2 depends on the potential difference between the conducting wire 1-1 and the conducting wire 1-2. It is thick enough to leave a space that is not short-circuited in the air. In addition, the thickness of the insulating coating 3 is also taken into consideration. That is, the distance between the conductors of each layer may be set to be equal to or greater than the thickness calculated based on the value of the air dielectric strength and the voltage value between the conductors.
By providing such a thickness, even if there are pinholes or the like in the insulating coating 2 and the insulating coating 3, a layer short circuit does not theoretically occur.

  Further, since the electric wire according to the present invention is used, the insulating coating 3 can be designed to be thinner than the insulating coating 2, and the space factor as a winding for the same volume can be improved.

  Hereinafter, other embodiments will be described.

FIG. 3 is a cross-sectional view of an electric wire in which a conductive wire is provided with an insulating coating 3 and an insulating layer 4 attached eccentrically. The insulating layer provided thick on the electric wire may be attached like the insulating layer 4.
The insulating layer 4 is determined based on the value of the dielectric strength in the air against the potential difference applied between the conductors when coiled.
4 is a cross-sectional view of one side around which the electric wire shown in FIG. 3 is wound. The electric wire is wound so that the insulating layer 4 hits between the layers of the electric wire that has been wound.

  The possibility of causing a layer short can be reduced or eliminated by the insulating layer 4 pasted in this way. In addition, since such an electric wire is used, the insulating coating 3 can be designed to be thinner than the insulating layer 4, and the space factor as a winding for the same volume can be improved.

  Note that the insulating layer 4 can be attached after twisting of the conductive wire (for example, immediately before coiling or after being held by a feed roll), thereby making it unnecessary to consider the twist of the conductive wire.

5 to 8 show the case where the thick portion of the insulating layer provided in an eccentric shape of the electric wire is provided separately at both ends of the conductor cross section.
By forming the electric wires in this manner, the insulating layer of both electric wires takes care of the necessary spatial distance between the conductive wires, and the thickness per layer can be halved. In addition, since both electric wires handle the insulating layer as an interlayer, even if there is a pinhole or the like in the insulating layer of one electric wire, the insulating layer of the other electric wire helps to prevent a layer short circuit. Moreover, it is excellent in productivity at the time of electric wire manufacture.

9 to 16 show a case where an insulating layer is provided on a flat wire (substantially rectangular line) having a substantially flat surface in the conductor cross section.
The flat wire can correct the twist of the wire while feeding the wire, and can be easily coiled while keeping the thick portion of the insulating layer constant. Therefore, the productivity with respect to the twist is better than that of the round wire or the elliptic wire.

  The insulating layer (especially the eccentric insulating layer) can be well coiled when formed at a position where the twist of the electric wire does not occur in the subsequent steps by a feed roll or the like.

  Also, the insulating layer (particularly the eccentric insulating layer) may be formed on the lead wire by applying UV (Ultraviolet) curable resin and curing it by irradiating ultraviolet rays while instantaneously adjusting the thickness. You may provide by another method.

  The eccentric insulating layer is coated with UV curable resin, and is cured instantaneously by irradiating UV at a position where the twisting of the electric wire does not occur in the subsequent process by a feed roll or the like, and then coiled as it is. Also good.

In addition, because of the winding structure, the same line voltage is not generated between all the wires, so the thickness and number of formations of the insulating layer wound at a position where a high voltage (high potential difference) can be adjusted according to the potential difference. Good.
For example, in the case of the electric wire shown in FIG. 1, as shown in FIG. 17, the thickly provided insulating layer coating section may be set to the range of the conducting wire that is not allowed by the thickness of the insulating coating 3 alone. Moreover, as shown in FIG. 18, you may make it adjust the thickness of the insulating film 2 in an application | coating area in multiple steps | paragraphs or linearly. In FIG. 18, the formation of the insulating film having the first thickness is started before the potential difference between the layers becomes unacceptable only by the thickness of the insulating film 3 (starting point of the coating section 1). In addition, the second thickness (second thickness> first) from before the potential difference between the layers becomes unacceptable between the thickness of the insulating coating 3 and the thickness of the insulating coating 2 (first thickness) (starting point of the coating section 2). The formation of the insulating film of the thickness of In addition, the third thickness (third thickness> second) before the potential difference between the layers becomes unacceptable between the thickness of the insulating coating 3 and the thickness of the insulating coating 2 (second thickness) (starting point of the coating section 3). The formation of the insulating coating of the third thickness is stopped after a position where the potential difference between the layers can be allowed only by the thickness of the insulating coating 3 (such as folding of the electric wire). That is, the thickness of the insulating coating 2 varies in three stages: application section 1 <application section 2 <application section 3.

That is, the insulating coating 2 may be formed on the electric wire while varying the thickness of the insulating layer applied between the electric wires so as to allow the applied inter-wire voltage value determined by the winding structure.
When the insulating coating 2 is generated in this way, it is possible to prevent a layer short circuit that may occur between the respective electric wires. In addition, it is possible to reduce the material for the insulating coating and improve the thermal conductivity, which becomes a problem with the coiling.

As a method of forming a thick coating film on a part of the conductor cross section, paint is applied to a part of the conductor by partial immersion (see FIG. 19), roll transfer (see FIG. 20), spray (see FIG. 21), or the like. Adhere and cure by heating, solvent volatilization, UV irradiation, etc. It is desirable that the curing performed here be as short as possible because the heating furnace length can be shortened.
Further, it may be coiled as it is without being wound on a roll after heat curing.
When forming a paint film on two surfaces of a conducting wire, it may simply be repeated twice, or both surfaces may be formed simultaneously.

FIG. 22 is a schematic diagram for explaining an insulating layer formed on a conducting wire. The cross-sectional view of the electric wire shown in (a) shows the electric wire in which the coating section is limited as shown in FIG. The electric wire sectional view shown in (b) shows an electric wire in which the coating thickness is linearly increased.
The cross-sectional view of the electric wire shown in (c) shows an electric wire which is applied to two surfaces and linearly increases the insulating layer thickness corresponding to the potential difference applied to each surface. Moreover, it is an example of the electric wire in which the insulating layer covering the entire circumference and the insulating layer provided eccentrically are formed simultaneously.

  An electric wire wound in multiple layers is wound into a multilayer coil by winding an insulating layer provided thick on the electric wire around a magnetic core or the like so as to be in contact with the layers of the wound electric wire. The wound multi-layer coil may be cured by filling an insulating resin between the wires.

  Further, as shown in FIG. 23, the winding may be filled and cured using a heat conductive resin containing a filler having a heat conductivity higher than that of a general resin. At this time, it may be an air core or may be filled and cured together with an iron core.

  Further, as shown in FIG. 24, the winding is formed as an air-core coil, filled with resin between the wires and cured, and a magnetic core is formed with a resin (composite magnetic material) containing a magnetic material around the winding. It may be made into a magnetic element.

  As the magnetic body, for example, a slurry obtained by mixing a metallic magnetic powder and a thermosetting liquid resin can be used. The thermosetting resin is preferably a low-viscosity resin so as to have sufficient fluidity when made into a slurry. For example, an epoxy resin can be used. Here, dust powder such as gas atomized powder of Fe-Si 6.5% material can be used as the magnetic powder. When these are mixed with a resin to form a slurry, alumina powder, silica powder, or the like may be blended at the same time to reduce the space factor of the dust powder, which is a magnetic material, and adjust the magnetic permeability. The composite magnetic body 6 can be obtained by casting and magnetically curing the magnetic slurry blended by this procedure into a wound wire filled with the resin 5 and set in a mold after curing.

In the above description, an eccentric insulating layer is additionally provided, or the thickness of the insulating layer is determined based on the potential difference applied between the wires (interlayer) and the dielectric strength value in the air (atmosphere: air). did. This is because it is considered that electricity is applied to the electrical component in a state where air enters a space created by a pinhole or void that causes a layer short.
Therefore, the thickness of the insulating layer can be further reduced by making the electrical component sealed under an insulating gas (rare gas, SF6, etc.) having a higher dielectric strength than air.
That is, the number of formations and the thickness of the insulating layer that falls between the layers of the windings used for the electrical component are determined with reference to the value of the dielectric strength of the insulating gas. For example, with reference to FIG. 23, it is possible to obtain the effect of sealing the winding layers under an insulating gas when forming the insulating layer corresponding to the layers and the resin 5. At this time, it is better to perform evacuation or dehumidification as necessary. Of course, the insulating layer thickness between adjacent windings can also be reduced by a value based on the dielectric strength of the insulating gas instead of the dielectric strength in the air.

  As described above, by increasing the insulating layer of the conductive wires in the direction adjacent to each other as the interlayer rather than between the adjacent wires in the winding order, it is possible to provide an electric wire having a small volume while reducing the layer short in design. In addition, an inexpensive and highly efficient winding and electrical component can be obtained that is thinner than the thickness of the insulating layer on the surface between the adjacent wires in the winding order.

  Note that the interlayer potential difference between the wires of a motor, a transformer, or the like as an electrical component changes with time. In this case as well, an insulating layer with a reduced probability of layer shorting may be applied to the conducting wire for any potential difference.

  Next, selection of the insulating layer provided in the winding according to the present invention will be described using Example 1.

  Table 1 below shows each characteristic of the electric wire that is a multilayer coil that is generated depending on the number of formations of the thick insulating layer.

  The numerical values are as shown in the above table. Each time the number of coatings is increased, the applied thickness increases. Each time the applied thickness of the electric wire increases, the electric wire diameter also increases proportionally, and the outer diameter of the winding when coiled increases.

  On the other hand, although the insulating layer is additionally provided, a significant decrease in the space factor can be prevented. Similarly, the decrease in the inductance with respect to the increase in the thickness of the insulating layer is more limited than in the case where the film covering the entire surface is thickened.

  In addition, the coating frequency can reduce the probability that a pinhole etc. will overlap by apply | coating once, and can reduce the probability that a multilayer coil will cause a layer short circuit exponentially by increasing the frequency | count.

  Moreover, what is necessary is just to determine the frequency | count of application | coating with reference to the characteristic of the desired electric wire. The number of times of application is preferably about 5 times or less. This is because the space factor and the rate of decrease in inductance are worse than 10%. The application angle is preferably about 1/6 to less than 1/2 of the surface of the electric wire.

  As described above, according to the present invention, it is possible to provide an electric wire, a winding, and an electrical component that are designed to reduce the possibility of causing a layer short between layers generated in the structure of the winding. Moreover, according to this invention, the space factor of a winding axis direction can be improved.

  Further, by increasing the applied thickness so as to be according to the present invention, it is possible to obtain an electric wire that exhibits high insulation performance with respect to the interlayer voltage and has an excellent space factor and inductance characteristics as compared with existing electric wires.

Further, in providing an electric wire having equivalent insulation characteristics with respect to the interlayer voltage, it is possible to make the insulating layer thickness of a portion of the electric wire in contact with an adjacent conducting wire (= the conducting wire that hardly causes a potential difference) thinner. .
In other words, the electric wire according to the present invention has an equivalent electric strength after winding with respect to an existing electric wire (an electric wire having an insulating layer having the same thickness as that of the insulating layer between the layers). The required volume has been reduced. In addition, this means that a large number of turns of the conducting wire can be secured in the same volume as the electric component. In addition, equivalent performance as an electrical component can be achieved with a small number of turns. That is, a high-performance electric wire used for winding can be obtained by reducing the insulating layer applied to the conductor more than necessary.

  The present invention can be used for all electrical components having windings. In addition, the present invention can be used to obtain a high-performance electric component while reducing a layer short circuit that occurs in the winding of all electric components having a winding. As electrical parts, it is suitable for motors, transformers, choke coils, reactors, and the like.

DESCRIPTION OF SYMBOLS 1 Conductor 2 Insulating film 3 Insulating film 4 Insulating layer 5 Resin 6 Composite magnetic body

Claims (18)

In an electric wire having an insulating layer on the surface of the conducting wire,
The insulating layer is thickly provided in an eccentric shape in one direction orthogonal to the wire direction of the conducting wire, and the insulating layer provided in the eccentric shape is thicker than the other insulating layer. . The electric wire according to claim 1,
The electric wire characterized in that the eccentrically thick insulating layer is additionally formed on the surface of the other insulating layer. The electric wire according to claim 2,
The thickness of the insulating layer provided thick in the eccentric shape is such that the distance between the conductors of each layer is such that it can withstand the voltage value applied between adjacent layers on the winding structure made using the electric wire. An electric wire characterized in that it is set to have a thickness that is determined based on the value of air dielectric strength and the voltage value. A winding wound in multiple layers,
The insulating layer that hits the layers of the wound wire is formed thicker than the insulating layer in the other direction,
The winding, wherein the thick insulating layer is formed in multiple layers on the surface of the other insulating layer. The winding according to claim 4,
The thickness of the insulating layer formed thick is determined based on the value of the dielectric strength in the air with respect to the interlayer voltage value applied between the layers,
The insulating layer thickness formed in the other direction is determined based on the value of the air dielectric strength with the adjacent winding. The winding according to claim 4 or 5,
The winding, wherein the insulating layer is made of a paint film. The winding according to claim 4 or 5,
The winding, wherein the insulating layer is made of a pasting member. A winding according to any one of claims 4 to 7,
The said electric wire is a winding characterized by the cross section orthogonal to a line direction being a circle or a substantially circle. A winding according to any one of claims 4 to 7,
The wire has a flat cross section perpendicular to the wire direction. A winding according to any one of claims 4 to 9,
The winding is wound as an air-core coil and then cured by filling an insulating resin between the wires or a resin containing a filler having a higher thermal conductivity than the resin. . The winding according to claim 10,
The thickness of the insulating layer that falls between the layers of the electric wires is determined based on the value of the dielectric strength of the insulating gas that is more insulative than air,
Winding, wherein the winding layer is sealed with the resin under the insulating gas. The winding according to any one of claims 4 to 11,
It is composed of an electric wire in which an insulating layer is formed eccentrically while varying the thickness of the insulating layer applied between the electric wires so as to allow an applied electric wire voltage value determined by the winding structure. And winding.   An electric wire having a thick insulating layer on one surface orthogonal to the wire direction of the conductive wire and having an insulating layer with a thicker insulating layer than the other insulating layer. An electrical component having a wound winding. The electrical component according to claim 13,
The electrical component, wherein the eccentrically thick insulating layer is formed in a multilayer on the surface of the other insulating layer. The electrical component according to claim 14,
The thickness of the insulating layer provided thick in the eccentric shape is such that the distance between the conductors of each layer is such that it can withstand the voltage value applied between adjacent layers on the winding structure made using the electric wire. An electrical component, wherein the electrical component is set to have a thickness determined based on a value of an air dielectric strength and the voltage value.   An electrical component made by the winding according to any one of claims 4 to 12. The electrical component according to claim 16, wherein
An electrical component, wherein a magnetic material serving as a magnetic core of the winding is formed by a casting method. An insulating layer having a thickness corresponding to an interlayer voltage value applied between the wound conductive wire layers is provided on one surface of the rectangular conductive wire wound in multiple layers, and the thickness of the other insulating layer is provided to be thinner than the above thickness. Using the wire
When the electric wire is wound in multiple layers to form a multilayer coil, an insulating layer provided thick on the electric wire is arranged so as to hit the layer of the wound electric wire and wound in an air-core shape,
Filling and curing with a resin containing a filler that improves thermal conductivity between adjacent conductors of the air-core multilayer coil,
An electric component having a shape in which a magnetic core is formed of a resin containing a magnetic material on a multilayer coil in which a line is fixed with the resin.

Images