JP4824905B2 - Outermost layer tape gap winding wire - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an outermost layer tape wound electric wire in which a coating resin layer is provided on the outer periphery of a conductor and a plastic tape is wound around the outer periphery, and more particularly to an outermost layer tape wound electric wire having heat-fusibility. It is.
[0002]
[Prior art]
Conventionally, as an electric wire having heat-fusibility, a fusion layer having a melting point lower than that of the insulation layer is coated on the insulation layer, or a tape that can be easily bonded is overlaid on the insulation layer. . As a more specific example, a fluororesin insulating layer is provided on the outer periphery of a collective stranded wire bundled and twisted with a plurality of enameled copper wires excellent in heat resistance, and further, the fluororesin is used as a fusion layer on the outer periphery. An electric wire covered with a fusion layer having a melting point lower than that of the insulating layer, or an outermost layer tape-wrapped electric wire in which a tape that can be easily bonded on the fluororesin insulating layer is wound. These electric wires are wound around the coil, and then the coil is formed by melting the fusion layer by heat fusion such as energization heating or hot air heating. Also, an outermost layer in which a fluororesin insulating layer is provided on the outer periphery of an aggregate twisted wire bundled by twisting a plurality of enameled copper wires with excellent heat resistance, and a plastic tape provided with an adhesive layer is wound around the outer periphery. The tape winding electric wire is well-known as described in Patent Document 1, for example. In this electric wire, a coil was formed by adhering and fixing adjacent windings of the winding portion with an adhesive layer. The coil is a heating coil, a motor coil, a voice coil, or the like that particularly requires heat resistance and adhesiveness.
[0003]
[Patent Document 1]
JP 2002-015852 A
[0004]
[Problems to be solved by the invention]
In the case of an electric wire coated with a fluororesin fusion layer having a melting point lower than that of the fluororesin insulation layer as the fusion layer, adhesion between the fluororesin fusion layers is possible, but adhesion with other resins is difficult. It was. Also after winding a wire coated with the fluorine resin bonding layer on the coil, and molding the coil by self-fusing by heating, the molded coil adhered to the coil support plate made of plastic material or metal material There was a problem that it was difficult. In addition, when a tape that is easy to bond as a fusing layer is wound, it is possible to bond the molded coil to the coil support plate . However, if the melting point of the tape material is low, the rated temperature of the wire On the other hand, when the melting point of the tape material is high, there is a problem that there is a risk that the insulator melts when the coil is formed by heat fusion. Further, the outermost layer tape wound electric wire in which the plastic tape having the adhesive layer provided on the outer periphery of the fluororesin insulating layer is overwrapped has a problem that heat resistance is low because the fluororesin fusion layer is not used.
[0005]
The present invention has been made to solve the various problems of the prior art described above, and exposes two different types of materials such as a covering material and a tape material on the surface of the electric wire, and has the characteristics of different materials. outer tape winding wire, also it is possible adhesion of fluororesin between the bonding layer, and then self-bonding outermost tape winding wire combines both characteristics that also allows adhesion to other resin, and by heating The outermost layer tape winding electric wire which formed the coil and made possible adhesion of the formed coil and the coil support plate , and also made use of the heat resistance, chemical resistance and high frequency characteristics of the fluororesin, and at high temperature, for example, 200 ° C It aims at providing the outermost layer tape winding electric wire which has adhesiveness with other resin.
[0006]
[Means for Solving the Problems]
As a first aspect, the present invention provides a coating resin layer on the outer periphery of a conductor, and further, a plastic tape is wound around the outer periphery with a gap winding (a winding method with a gap), and the coating resin layer material and the plastic tape are wound on the surface of the electric wire. An outermost layer tape gap wound electric wire in which two different types of materials are exposed, and the coating resin layer material on the surface of the electric wire has heat-fusibility, and the plastic tape material wound by gap winding is higher melting point than the resin coating layer material of the wire surface, the outermost layer tape gap winding, characterized in that it combines the features of different materials that are possible adhesion to the coil support plate made of plastic material or metal material It is in an electric wire (hereinafter abbreviated as a tape gap winding electric wire).
The conductor may be any type of conductor such as a copper wire, a plated wire, an enameled copper wire, a litz wire, and the material and the twisted configuration are not limited. Further, the number of the coating resin layers is not limited, and there are, for example, two layers of an insulating layer and an adhesive layer, and one layer that also serves as insulation / adhesion. Further, the number of tapes may be one or more, and the number is not limited.
In the tape gap winding electric wire of the first aspect described above, it is possible to use the characteristics of both materials by exposing two different materials of the resin coating layer material and the tape material on the surface of the electric wire and combining the characteristics of the different materials. it can.
The aforementioned first aspect tape gap winding wire, the coating resin layer material of the wire surface has a heat fusible, also the properties of both materials because adhesion is possible with the tape material coils support plate Can be used alive. For example, if the coating resin layer material having a heat fusion property of the fluorine-based resin, thermal fusion among the fluorine-based resin is possible and can be molded coils, molded coils coils support plate It is difficult to adhere to the tape material portion, and this can be satisfactorily adhered to the tape material portion.
[0007]
According to a second aspect of the present invention, the coating resin layer includes two layers, a first fluororesin insulating layer and a second fluororesin heat-sealing layer, which are sequentially provided on the outer periphery of the conductor. The fluororesin heat-sealing layer material of the layer has a lower melting point than the first-layer fluororesin insulating layer material, and the plastic tape material wound in the gap winding is more than the second-layer fluororesin heat-sealing layer material. have high melting points, in the tape gap winding wire, which is a possible adhesion to the coil support plate made of plastic material or metal material.
As an example of the two-layer configuration of the first fluororesin insulating layer and the second fluororesin heat-sealing layer (coating resin layer on the electric wire surface), PFA (tetrafluoroethylene-perfluorocarbon) is used as the first layer. Alkyl vinyl ether copolymer resin) (melting point 305 ° C.) is used as the insulating layer, and FEP (tetrafluoroethylene-hexafluoropropylene copolymer resin) (melting point 260 ° C.) is used as the heat sealing layer for the second layer. be able to. Moreover, various engineering plastic tapes, polyester tapes, polyimide tapes, etc. can be used as the plastic tape having a higher melting point than the fluororesin heat-sealing layer material. The gap winding of the plastic tape is sufficient if the area ratio between the tape and the surface of the fusion layer exposed between the gaps of the tape is about 3: 1 to 1: 3. The number of plastic tapes is not particularly limited, and any number may be used.
In the tape gap wound wire according to the second aspect, a tape having a melting point lower than that of the fluororesin insulating layer is coated and a tape having a melting point higher than that of the fluororesin heat sealing layer is gap-wrapped. Therefore, the fusion layer is exposed between the gaps between the tapes, so that the fluororesin of the fusion layer can be bonded by heating, and coil formation is possible. And the coil can be easily bonded.
[0008]
As a third aspect of the present invention, the coating resin layer includes two layers, a first fluororesin insulating layer and a second fluororesin heat-sealing layer, which are sequentially provided on the outer periphery of the conductor. The fluororesin heat-sealing layer material of the layer has a lower melting point than the first-layer fluororesin insulating layer material, and the plastic tape material wound in the gap winding is more than the second-layer fluororesin heat-sealing layer material. even a high melting point consists of two are possible adhesion to the coil support plate made of plastic material or metal material, on the first sheet of plastic tape which is a gap wound in one direction, further second sheet A tape gap wound electric wire is characterized in that the plastic tape is gap-wrapped in the opposite direction.
In the tape gap wound wire according to the third aspect, as in the tape gap wound wire according to the second aspect, the fluororesin of the fusion layer (coating resin layer on the surface of the wire) can be bonded by heating, and coil molding is possible. In addition, the gap between the two tapes wound with the gap facilitates the adhesion of the coil support plate and the coil. Further, by tape-wrapping the second tape in the direction opposite to that of the first gap-wrapped tape, it is possible to prevent the tape from being separated. In some cases, the tape may be easily separated only with the tape wound in one direction.
[0009]
According to a fourth aspect of the present invention, there is provided a tape gap wound electric wire in which an adhesive layer is provided on the plastic tape.
The tape gap winding wires of the fourth aspect, on achieving the functions and effects of the first or second view point, the plastic tape is reliably prevented tape loosened the adhesive layer is provided be able to.
[0010]
As a fifth aspect of the present invention, the plastic tape is provided with an adhesive layer, and the first tape is gap-wrapped in one direction with the adhesive layer facing outside, and the gap is opposite in the opposite direction. The wound second tape is a tape-gap wound electric wire characterized in that a gap is wound with the adhesive layer inside.
In the tape gap winding electric wire of the fifth aspect, in addition to the effects and effects of the third aspect, the first tape is gap-wound in one direction with the adhesive layer facing outward, and in the opposite direction. Since the gap-wrapped second tape is wound with the adhesive layer on the inside, it is possible to more surely prevent tape breakage.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the contents of the present invention will be described in more detail with reference to embodiments shown in the drawings. Note that the present invention is not limited thereby.
FIG. 1 is a perspective view with a cross section showing a first embodiment of a tape gap winding electric wire of the present invention. FIG. 2 is a perspective view with a cross section showing a second embodiment of the tape gap winding electric wire of the present invention. FIG. 3 is a schematic view showing an example in which the tape gap wound wire of the present invention is wound and a molded coil is attached to a coil support plate.
In these figures, 1 is an aggregate stranded wire (conductor), 1a is a heat-resistant enameled copper wire, 2 is a first fluororesin insulating layer (coating resin layer), and 3 is a second fluororesin heat-sealing layer (Coating resin layer on the surface of the electric wire) 4 is a plastic tape, 4a is a first plastic tape, 4b is a second plastic tape, 10 and 20 are outermost tape gap wound wires, 30 is a coil, and 35 is It is a coil support plate.
[0012]
-First embodiment-
1st Embodiment of the tape gap winding electric wire of this invention is described using FIG.
First, a polyamide-imide copper wire having an outer diameter of 0.07 mm was used as the heat-resistant enameled copper wire 1a, and a plurality of, for example, 500 wires were bundled and twisted to produce a collective stranded wire (conductor) 1. Next, PFA (melting point 305 ° C.) is melt-extruded on the outer periphery of the stranded strand 1 to provide a first fluororesin insulating layer (coating resin layer) 2, and then the FEP is applied to the outer periphery of the fluororesin insulating layer 2. (Melting point 260 ° C.) was melt-extruded to provide a second fluororesin heat-sealing layer (coating resin layer on the wire surface) 3. Next, a polyimide tape as a plastic tape 4 having a melting point higher than that of the fluororesin heat-sealable layer material is provided on the outer periphery of the fluororesin heat-seal layer 3, and the area ratio between the surface of the melt-adhesive layer exposed between the tape and the gap between the tapes. Was wound with a gap of 1: 1.5 to produce a tape gap wound electric wire 10. In addition, as the heat-resistant enameled copper wire 1a, a polyesterimide copper wire, a polyimide copper wire, or the like is used in addition to the polyamideimide copper wire.
Since the fusion layer 3 is exposed between the gaps between the tape 4 and the tape 4 in the tape gap winding electric wire 10, the fluororesin of the fusion layer 3 can be bonded to each other by heating, and coil molding is possible. It was. In addition, the coil support plate and the coil can be easily bonded by the gap-wrapped portion of the tape 4. Further, the heat resistance, chemical resistance and high frequency characteristics of the fluororesin were good, and it had adhesiveness with other resins even at high temperatures, for example, 200 ° C.
[0013]
-Second Embodiment-
2nd Embodiment of the tape gap winding electric wire of this invention is described using FIG.
In the same manner as in the first embodiment, a plurality of polyamideimide copper wires 1a having an outer diameter of 0.07 mm, for example, 500 pieces are bundled and twisted around the outer periphery of the stranded wire (conductor) 1 in order. A fluororesin (PFA (melting point 305 ° C.)) insulating layer 2 and a second fluororesin (FEP (melting point 260 ° C.)) heat-sealing layer 3 were provided. Next, as the first plastic tape 4a on the outer periphery of the fluororesin heat fusion layer 3, the polyimide tape with an adhesive layer is disposed on the outer side, and the area of the adhesive layer surface exposed between the tape and the gap between the tapes The gap was wound at a pitch such that the ratio was 1: 2. Subsequently, on the first tape, a polyimide tape 4b with an adhesive layer which is the same as the first tape 4a is used as a second plastic tape 4b. The tape gap winding electric wire 20 was manufactured by performing gap winding at the same pitch as the first tape in the opposite direction.
The tape gap wound wire 20 has the characteristics of the tape gap wound wire 10 and can prevent the tape from being loosened.
[0014]
-Form to attach winding and molded coil to support plate-
An example in which the tape gap wound wire of the present invention is wound and a molded coil is attached to a support plate will be described with reference to the schematic diagram of FIG.
After winding the tape gap wound electric wire 10 obtained by the first embodiment in a substantially circular shape, the second layer of fluororesin (FEP) heat fusion layer 3 is melted and bonded to each other by energization heating to form the coil 30. Manufactured. Subsequently, the coil 30 was bonded to an iron coil support plate 35 with an epoxy resin (not shown).
Since the fluororesin heat-sealing layer 3 is exposed between the gaps between the tape 4 and the tape 4 in the tape gap winding electric wire 10, the fluororesins of the fusing layer 3 can be bonded to each other by heating, and the coil 30 is molded. The adhesion between the wires was strong.
Further, the coil 30 and the coil support plate 35 can be bonded to each other between the tape 4 portion of the coil 30 and the coil support plate 35, and the bonding is sufficiently performed.
[0015]
【The invention's effect】
According to the tape gap winding electric wire of the present invention, two types of materials such as a coating resin layer material and a plastic tape material are exposed on the surface of the electric wire, and the characteristics of both materials are utilized by combining the characteristics of the different materials. Can now. In addition, according to the present invention, the covering resin layer material on the surface of the electric wire has heat-fusibility, and the tape material has good adhesion to other resins, so that it can be used taking advantage of the characteristics of both materials. became. Further, according to the present invention, a tape having a melting point lower than that of the fluororesin heat-sealable layer material is gap-wrapped on the fluororesin heat-sealable layer having a melting point lower than that of the fluororesin insulating layer. Since the fusion layer is exposed between the gaps of the tape, the fluororesin of the fusion layer can be bonded to each other by heating, and coil molding becomes possible. In addition, the gap-wrapped tape portion facilitates adhesion between the coil support plate and the coil. In addition, according to the present invention, it is possible to prevent the tape from being broken by gap winding the second tape in the opposite direction to the first gap winding tape. Further, according to the present invention, when the adhesive layer is provided on the tape, the tape can be reliably prevented from being separated. Furthermore, according to the present invention, the first tape is gap-wrapped in one direction with the adhesive layer on the outside, and the second tape is gap-wrapped in the opposite direction with the adhesive layer on the inside. In this case, it has become possible to more reliably prevent tape breakage.
Therefore, the present invention has an extremely large effect contributing to the industry.
[Brief description of the drawings]
FIG. 1 is a perspective view with a cross section showing a first embodiment of a tape gap wound wire according to the present invention.
FIG. 2 is a perspective view with a cross section showing a second embodiment of the tape gap winding electric wire of the present invention.
FIG. 3 is a schematic view showing an example in which a tape gap wound wire of the present invention is wound and a molded coil is attached to a support plate.
[Explanation of symbols]
1 Aggregate stranded wire (conductor)
1a Heat-resistant enameled copper wire 2First layer of fluororesin insulation layer (coating resin layer)
3 Fluororesin heat-sealing layer of the second layer (coating resin layer on the surface of the electric wire)
4 Plastic tape 4a First plastic tape 4b Second plastic tape 10, 20 Outermost layer tape gap wound wire 30 Coil 35 Coil support plate

Claims (5)

A coating resin layer is provided on the outer periphery of the conductor, and further, a plastic tape is wound around the outer periphery with a gap winding (a winding method with a gap between them), and two kinds of different materials such as a coating resin layer material and a plastic tape material are applied to the surface of the electric wire. An exposed outermost tape gap wound wire,
The coating resin layer material of the wire surface has a heat fusible, also plastic tape wound in the gap winding has a higher melting point than the resin coating layer material of the wire surface, made of plastic material or metal material An outermost layer tape gap wound electric wire characterized by having the characteristics of different materials that can be bonded to a coil support plate. The coating resin layer is composed of two layers of a first fluororesin insulating layer and a second fluororesin heat-sealing layer sequentially provided on the outer periphery of the conductor, and a second fluororesin heat-sealing layer material the lower melting point than the fluorocarbon resin insulating layer material of the first layer, and a plastic tape wound in the gap winding has a higher melting point than the fluororesin heat Chakusozai of the second layer, plastic material some The outermost layer tape gap wound electric wire according to claim 1, characterized in that it can be bonded to a coil support plate made of a metal material. The coating resin layer is composed of two layers of a first fluororesin insulating layer and a second fluororesin heat-sealing layer sequentially provided on the outer periphery of the conductor, and a second fluororesin heat-sealing layer material the lower melting point than the fluorocarbon resin insulating layer material of the first layer, and a plastic tape wound in the gap winding has a higher melting point than the fluororesin heat Chakusozai of the second layer, plastic material some Consists of two sheets that can be bonded to a coil support plate made of a metal material. On the first plastic tape that is gap-wrapped in one direction, a second plastic tape is wound in the opposite direction. The outermost layer tape gap winding electric wire according to claim 1, wherein the outermost layer tape gap winding electric wire is formed. Claim 1 or 2 Symbol placement outermost tape gap winding wires of the plastic tape is characterized in that the adhesive layer is provided.   The plastic tape is provided with an adhesive layer, the first tape is gap-wrapped in one direction with the adhesive layer outside, and the second tape gap-wrapped in the opposite direction is 4. The outermost layer tape gap wound electric wire according to claim 3, wherein the outermost layer tape gap wound electric wire is wound with the adhesive layer inside.

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