JPH07262831A - Compound wire for deflecting coil - Google Patents

Abstract

PURPOSE:To provide a conductor for deflecting coil suitable for coiling, which has a high space factor of the conductor, and a low DC resistance value. CONSTITUTION:On a bare copper wire 2, a very thin winding layer 3 of a plastic tape is provided, and on the layer 3, a copper tape winding layer 4 and a plastic tape winding layer 3 are provided alternative and making the plastic tape winding layer 3 at the outermost layer. In such a structure, the copper tape winding layer 4 and the plastic tape winding layer 3 may be provided alternatively at a desired number of layers, on an insulating copper wire 6. Furthermore, on the bare copper wire 2 or on the insulating copper wire 6, an insulated copper tape where an insulating process was applied on one side or both sides by baking an insulating paint and the like, may be wound so as to provide an insulating layer and a conductive layer alternatively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite wire for a deflection coil, and particularly for a next-generation television CRT such as a high-definition computer CRT display or a high-definition CRT.
The present invention relates to a composite wire suitable for a deflection coil of an RT display.

[0002]

2. Description of the Related Art Conventionally, an enamel wire (insulated wire) having a diameter of 0.3 to 0.5 mm has been used as a conducting wire for a deflection coil provided in a cathode ray tube of a television receiver or a CRT display for a computer. This is saddle
A deflection coil is manufactured by winding a conductor into a predetermined shape such as a mold and integrally fusing the conductor with a fusion layer provided on the outer periphery of the conductor.

However, in a deflection coil made of such a single insulated wire, the high frequency resistance loss increases as the applied scanning frequency increases, and the coil generates heat, which causes distortion of the image. There is a problem that occurs. In order to improve the distortion of the image due to such heat generation, it is necessary to divide the conductor of the coil conductor to reduce the high frequency resistance loss. Therefore, as shown in FIG. A litz wire or the like in which 7 to 10 insulated wires 1 having a small diameter of ˜0.2 mm are twisted together has been conventionally used as a conductor wire for a deflection coil.

[0004]

However, a stranded wire such as a litz wire has a problem that it is not suitable for coil winding because it has a shape in which a large number of irregularities are formed on the outer circumference. That is, when winding a coil, it is easier to increase the linear velocity as the cross-sectional shape of the conducting wire is closer to a perfect circle, and a small size coil that is aligned and wound can be obtained. Not only was it difficult to increase the wire speed, but it was easy for a gap to form between adjacent Litz wires, and the coil size was likely to increase. Further, since the litz wire itself has a small total conductor cross-sectional area (a conductor has a small space factor) for the finished outer diameter, the DC resistance is high, which also contributes to the heat generation of the coil.

The present invention has been made to solve these problems, and it is an object of the present invention to provide a conductor wire for a deflection coil, which is suitable for coil winding and has a high conductor space factor and a reduced DC resistance value. To aim.

[0006]

A composite wire for a deflection coil according to the present invention comprises a conductor having a circular cross section, a winding layer of an insulating tape or an insulating layer made of an insulating coating, and a conductor having a winding layer of a conductor tape. It is characterized in that a plurality of layers are provided so that the insulating layers and the conductor layers including the conductors are alternately arranged and the outermost layer is an insulating layer.

In the present invention, the conductor having a circular cross section is a bare copper wire having a diameter of 0.1 to 0.5 mm, or an insulated copper wire (enamel) having an insulating coating formed thereon by baking an insulating paint or the like. Coated copper wire) is used.

As an insulating layer provided on such a conductor, an insulating film such as a wound (horizontal) layer of an insulating tape made of plastic or a baking coating of an insulating paint is used. For this, a wound layer of a conductor tape is used. Then, these insulating layers and conductor layers, such that the insulating layers and the conductor layers including the structure of the conductor wire are alternately arranged on the conductor wire, that is, when the conductor wire is a bare copper wire, Insulating layers and then conductor layers are arranged alternately in this order. When the conductor wires are insulated copper wires, conductor layers and then insulating layers are arranged alternately on the insulating coating. It is provided in.

In the present invention, it is desirable to form such an insulating layer and a conductor layer by alternately winding a plastic tape such as a polyester tape and a copper tape in the order described above. Here, as the plastic tape and the copper tape, for example, the thickness is 0.0
Although one to several sheets of 5 to 0.2 mm are used, the thickness and number of tapes to be used are not limited to this, and can be freely set according to the required total cross-sectional area of conductor, finishing outer diameter, electrical characteristics, etc. Can be changed. Further, the plastic tape forming the outermost layer may be thicker than the tape forming the inner layer in consideration of processing deterioration during coil winding, insulation characteristics between wires and the like. In addition, to wind these tapes horizontally,
It is desirable to wind the ends in a state of abutting each other with almost no wrapping, but even if some overlapping portions occur, there is almost no problem in electrical characteristics.

Furthermore, in the present invention, instead of winding the plastic tape and the copper tape as described above, an insulating copper tape having an insulating treatment on one or both sides of the copper tape is used.
You may wind one sheet or two or more sheets. Here, as the insulating copper tape, for example, a tape in which an insulating coating film having a thickness of 0.001 to 0.1 mm is formed on one surface or both surfaces of a copper tape having a thickness of 0.05 to 0.2 mm by coating and baking an insulating paint, etc. Alternatively, a copper foil having such an insulating coating formed on one side or both sides and slitting into a tape shape is used.

[0011]

It is known that when a high-frequency current flows in a conductor, it flows only on the surface of the conductor due to the skin effect. In the deflection coil composite wire of the present invention, an insulating tape is provided on the outer circumference of the conductor having a circular cross section. Since the insulating layer and the conductive layer formed by winding the conductive tape and the like are alternately provided, and the conductive portion is divided into a plurality of portions to be thinly formed, a high frequency current flows through the entire conductive portion. Become. Therefore, in the deflection coil manufactured by using such a composite wire, high frequency resistance loss is reduced and heat generation is suppressed. In addition, the desired conductor cross-sectional area is obtained by alternately stacking the insulating layers and the conductor layers, and the space factor of the conductor is high.
Therefore, the DC resistance value is low for the finishing outer diameter. Furthermore, since the cross-section has a shape close to a perfect circle, it is suitable for coil winding, the working linear velocity can be improved, and a small size coil wound in alignment can be obtained.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing an embodiment of a composite wire for a deflection coil of the present invention, and FIGS. 2 and 3 are cross-sectional views showing another embodiment of the present invention.

In FIG. 1, reference numeral 2 is a diameter of 0.1 to 0.5 mm.
Of bare copper wire, on which a wound layer 3 of 0.005-0.05 mm thick plastic tape is provided. Then, a winding layer 4 of a copper tape having a thickness of 0.05 to 0.2 mm is provided thereon, and a winding layer 3 of a plastic tape having a thickness of 0.05 to 0.2 mm is further provided thereon. . In addition, on the winding layer 3 of the plastic tape, if necessary, a stacking composite layer including one winding layer of the copper tape 4 and the winding layer 3 of the plastic tape may be provided in a desired number. They can be stacked.

In the embodiment shown in FIG. 2, the diameter of the bare copper wire 2 having a baking coating film 5 of insulating paint is 0.1
On the insulated copper wire 6 having a thickness of 0.5 mm, the winding layer 4 of the copper tape having a thickness of 0.05 to 0.2 mm and the winding layer 3 of the plastic tape having a thickness of 0.05 to 0.2 mm are alternately arranged. In addition, a plurality of layers are provided so that the outermost layer is an insulating layer.

Further, in the embodiment shown in FIG. 3, 0.05 to 0.
The insulating copper tape 9 in which the 0.001 to 0.1 mm thick insulating coating 8 is formed on one or both surfaces of the 2 mm thick copper tape 7 by applying and baking the insulating coating, and the copper tape 7 must always have the insulating coating 8 interposed therebetween. Are wound so that they are adjacent to each other.

In the composite wire of the embodiment thus constructed, one or two or more insulating layers and conductor layers are alternately provided on the outer periphery of the conductor wire having a circular cross section.
Since the conductor part is divided into a plurality of parts and is made thin, a high-frequency current flows through the entire conductor part. Therefore, in the deflection coil manufactured by using such a composite wire, high frequency resistance loss is reduced and heat generation of the coil is suppressed. In addition, since the conductor cross-sectional area is large and the conductor space factor is high compared to the finished outer diameter, the direct current resistance value is kept low. Furthermore, since the cross-sectional shape is close to a perfect circle, it is suitable for coil winding, and a small size finish coil wound in alignment can be obtained with good workability.

Next, specific examples of the composite wire of the present invention will be described.

Concrete Example 1 A 0.01 mm thick polyester tape was wound side by side on a bare copper wire having a diameter of 0.24 mm with its ends abutted against each other, and a tape of 0.
A finish outer diameter of 0.4 m is obtained by horizontally winding a 06 mm thick copper tape and a 0.01 mm thick polyester tape in order.
A two-divided type composite insulated wire having m and a total cross-sectional area of the conductor of 0.094 mm ² was obtained.

Example 2 A 0.01 mm-thick polyester tape was horizontally wound on a bare copper wire having a diameter of 0.20 mm, and a 0.06 mm-thick copper tape and a 0.01 mm-thick polyester tape were sequentially wound on it. After that, 0.06 mm thick copper tape and 0.01
The outer diameter of the conductor is 0.5mm and the total cross-sectional area of the conductor is 0.16
A 5 mm ² split-type composite insulated wire was obtained.

The composite insulated wires obtained in these specific examples have a large total conductor cross-sectional area for the finishing outer diameter and a direct current resistance value as compared with the Litz wire which has been conventionally used as a conductor for deflection coils. Is low.

For example, as a litz wire having a finished outer diameter equivalent to that of the specific example 2, there is 7 / 0.15 2 UEW (7 pieces of two kinds of urethane-coated enameled wires are twisted with each other). The total cross-sectional area of the conductor (0.
165 mm ² ) and the total conductor cross-sectional area (0.1
It can be seen that the space factor is improved by 33% or more when compared with 24 mm ² ). In addition, 7 / 0.173 2P having a conductor total cross-sectional area (0.165 mm ² ) which is almost equal to that of the specific example 2
Comparing the finishing outer diameter with EW (a litz wire in which seven polyester-coated enameled wires are twisted together), the finishing outer diameter of the litz wire is 0.585 mm. It can be seen that the size of the composite insulated wire is 0.5 mm, which is about 17% smaller. Further, the composite insulated electric wires of the specific examples are all suitable for coil winding because the cross-sectional shape is a perfect circle and the outer shape is not uneven.

[0022]

As described above, in the deflection coil composite wire of the present invention, the conductor portion is concentrically divided into a plurality of portions and formed thin or thin, so that a high-frequency current flows through the entire conductor portion. Therefore, in the deflection coil manufactured by using such a composite wire, high frequency resistance loss is reduced and heat generation is suppressed.

Further, since the cross-sectional shape is circular, it is suitable for coil winding, and a compactly molded coil can be obtained with good workability. Further, since the composite wire itself has a large total conductor cross-sectional area for the finishing outer diameter, the DC resistance value is reduced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a composite wire for a deflection coil of the present invention.

FIG. 2 is a cross-sectional view showing another embodiment of the present invention.

FIG. 3 is a transverse sectional view showing still another embodiment of the present invention.

FIG. 4 is a cross-sectional view of a litz wire that has been conventionally used as a conductor for a deflection coil.

[Explanation of symbols]

 2 ………… Nude copper wire 3 ………… Plastic tape winding layer 4 ………… Copper tape winding layer 5 ………… Insulating paint baking coating 6 ………… Insulating copper wire 7 ………… Copper tape 8 ... Insulation film

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hironobu Iyoh, 1-1 1-1 Oda Sakae, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture, Showa Electric Wire & Cable Co., Ltd. (72) Tatsumi Hirano, Sakae Oda, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture 2-1-1 No. 1 Showa Electric Wire & Cable Co., Ltd.

Claims (3)

[Claims] 1. An insulating layer including a winding layer of an insulating tape or an insulating layer made of an insulating coating, and a conductor layer made of a winding layer of a conductor tape on a conductor wire having a circular cross section, including the conductor wire. A composite wire for a deflection coil, wherein a plurality of layers are provided such that and are alternately arranged and the outermost layer is an insulating layer. 2. The conductor wire having a circular cross section is a bare copper wire or an insulated copper wire formed by forming an insulating coating on the bare copper wire, and a plastic tape and a copper tape are alternately wound on the bare copper wire. Item 7. A composite wire for a deflection coil according to item 1. 3. A conductor wire having a circular cross section is a bare copper wire or an insulated copper wire obtained by forming an insulating coating on the bare copper wire, and an insulating treatment on which one side or both sides of a copper tape is applied. The copper tape is wound by one or two or more windings.
The composite wire for the deflection coil described.