JP7022471B1 - Stranded conductor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stranded conductor capable of producing a stranded conductor having a cross-sectional shape close to a perfect circle without compression or with a low compressibility. SOLUTION: A plurality of inner layers 2 arranged in a central portion, an outer layer 3 composed of four or more layers is provided outside the inner layer, and a first outer layer 4 is arranged apart in the circumferential direction. The first outer layer wire 12 is composed of the above, and the layers 5 and 6 other than the first outer layer 4 and the outermost layer 7 in the outer layer are formed, and the same number of strands 13 and 14 as the number of the first outer layer wires 12 are formed in the circumferential direction. The outermost layer 7 has an outer diameter wire 15 having twice the number of the first outer layer wires 12 and an outer thickness having the same number as the number of the first outer layer wires 12. The outer thick diameter wire 16 which is composed of the diameter wire 16 and constitutes the outermost layer 7 is arranged inside the outermost layer 7 and outside between the strands 14 and 14 adjacent to each other in the circumferential direction. Two outer diameter wires 15 and 15 are arranged in the circumferential direction between the outer diameter wires 16 and 16 adjacent to each other in the direction. [Selection diagram] Fig. 1

Description

The present invention relates to stranded conductors.

Conventionally, each of the strands constituting the stranded conductor used for electric wires and the like is generally a round wire having a circular cross section and the same diameter. A copper wire is mainly used as the wire, and a copper wire plated with tin, nickel, silver, aluminum, or various alloys is used.

For example, a stranded conductor having a concentric twisted structure and composed of 19 strands generally has one strand 102 at the center of the stranded conductor 101 as a core, as shown in FIG. , 6 strands 103 surround it to form an inner layer, and 12 strands 104 surround the outer circumference to form an outer layer, which are twisted in the same direction. ing.

Since the strands 102, 103, and 104 are all circular in cross section and have the same diameter, when the strands 102, 103, and 104 are arranged in a standard core wire arrangement to form the stranded conductor 101, the outer peripheral shape thereof is formed. As shown in FIG. 9, has a shape similar to a hexagonal shape, and does not have a shape similar to a round shape. Hereinafter, this will be referred to as the prior art 1.

Generally, as shown in FIG. 9, the stranded conductor 101 is used as an electric wire (covered wire) or the like 107 with an insulating material 106 coated on the outer peripheral portion thereof. It is important to reduce the amount of the insulating material 106 from the viewpoint of effective utilization of resources, and therefore, it is desired that the cross-sectional shape of the stranded conductor is a perfect circle.

However, if the stranded conductor is composed of 19 strands having the same diameter and a concentric twisted arrangement, for example, as shown in FIG. 9, the outer shape of the cross-sectional shape of the stranded conductor 101 becomes a hexagonal shape. The thickness of the insulating material 106 is thin in the vicinity of the apex portion and becomes thicker from the apex portion to the side portion, and the thickness of the insulating material 106 becomes non-uniform. Further, in order to prevent poor pressure resistance, the thickness of the insulating material 106 at the apex is used as a reference, and the thickness of the insulating material 106 at the side is excessive and wasteful. From this point as well, the cross-sectional shape of the stranded conductor is true. It is desired to be a circle.

Further, since the cross-sectional shape of the stranded conductor 101 is a hexagonal shape, there is a problem that the stranded conductor 101 may be damaged when the insulating material 106 is stripped in the terminal processing of the coated wire or the like.

Similarly, it is desired that the cross-sectional shape of the stranded conductor is a perfect circle in the collective stranded wire other than the concentric stranded arrangement.

As a method of making the cross-sectional shape of the stranded conductor a perfect circle, for example, as described in Patent Document 1, a wire 202 having a circular cross section and all having the same diameter is passed through a compression die while being twisted in one direction. , As shown in FIG. 10, a method has been proposed in which the cross-sectional shape of the stranded conductor 201 is a substantially perfect circle. Hereinafter, this will be referred to as the prior art 2.

Japanese Unexamined Patent Publication No. 11-25758

In the above-mentioned twisted wire conductor 201 of the prior art 2, when the wire 202 is passed through a compression die, the outer layer wire is compressed and deformed, so that the physical properties such as elongation property, flexibility, and flexibility are impaired. There is a problem.

Further, since the stranded conductor 201 of the prior art 2 needs to be twisted in one direction and passed through a compression die, an extra compression die is required as compared with the stranded conductor 101 of the prior art 1, and this compression is required. Since the die is worn and damaged during the manufacture of the stranded conductor 201, there is a problem that periodic replacement is required and the cost is high.

Further, in order to make the stranded wire after compression into a substantially perfect circle, it is necessary to keep the rotation speed of the manufacturing machine (twisting machine) below a certain value and stabilize the rotation speed. There is also a problem that the production efficiency is worse than that of the stranded conductor 101.

Further, in the stranded conductors 101 and 201 of the prior art, since all the adjacent strands are arranged so as to be in contact with each other, the density of the strand arrangement is high, there is no gap between the adjacent strands, and the conductors are stretched. There is a problem that physical characteristics such as characteristics, flexibility, and flexibility are impaired.

Therefore, in the present invention, the cross-sectional shape of the stranded conductor can be made closer to a perfect circular shape without compression or by compressing the strands at a compression rate lower than that of the prior art 2. It is an object of the present invention to provide a stranded conductor that can be formed.

In order to solve the above-mentioned problems, the invention according to claim 1 comprises an inner layer composed of one center line arranged in the central portion, or one center line arranged in the central portion, and the same. It has an inner layer composed of a first inner layer formed by arranging a plurality of first inner layer lines in the circumferential direction on the outside of the center line.
An outer layer composed of four or more layers is provided on the outside of the inner layer.
The first outer layer is formed on the innermost side of the outer layer, and the outermost layer is formed on the outermost side of the outer layer.
The first outer layer is composed of a plurality of first outer layer lines arranged apart from each other in the circumferential direction.
The outer layer is configured, and the first outer layer and each layer other than the outermost layer are arranged so that the same number of strands as the number of the first outer layer wires are separated in the circumferential direction. ,
The outermost layer has an outer diameter wire that is twice the number of the first outer layer wire and an outer diameter wire that has the same number as the number of the first outer layer wire and is thicker than the outer diameter wire. Configure and
The diameters of the strands constituting each layer other than the outermost layer in the outer layer are different for each layer, and the diameters of the strands constituting the same layer are the same.
The strands constituting the outer layer and the respective layers other than the first outer layer and the outermost layer are arranged inside the strands and outside between the strands adjacent to each other in the circumferential direction.
The outer thick diameter wires constituting the outermost layer are arranged inside the outermost layer and outside between the strands adjacent to each other in the circumferential direction, and two wires are arranged between the outer thick diameter wires adjacent to each other in the circumferential direction. It is characterized in that the outer diameter wires of the above are arranged in the circumferential direction.

The invention according to claim 2 is the invention according to claim 1, wherein the distance from the center of the twisted wire conductor to the outer edge end of the outer fine diameter wire constituting the outermost layer is used.
It is characterized in that the distance from the center of the stranded conductor to the outer edge of the outer thick wire constituting the outermost layer is the same.

The invention according to claim 3 is characterized in that, in the invention according to claim 1 or 2, the strands constituting the outermost layer are compressionally deformed from the outside.

According to the invention according to claim 1 of the present application, an inner layer composed of one center line arranged in the central portion, or one center line arranged in the central portion, and a plurality of lines outside the center line. It has an inner layer composed of a first inner layer formed by arranging the first inner layer lines of the above in the circumferential direction, an outer layer composed of four or more layers is provided on the outside of the inner layer, and the first inner layer is the innermost layer. The outer layer is formed, the outermost layer is formed on the outermost side of the outer layer, and the first outer layer is composed of a plurality of first outer layer lines arranged apart from each other in the circumferential direction to form the outer layer and the first outer layer. Each layer other than the outer layer and the outermost layer is configured by arranging the same number of strands as the number of the first outer layer lines so as to be separated in the circumferential direction, and the outermost layer is the number of the first outer layer lines. A wire that is composed of twice as many outer diameter wires and an outer diameter wire that has the same number of lines as the first outer layer wire and is thicker than the outer thin diameter wire, and constitutes each layer other than the outermost layer in the outer layer. The diameter of each layer is different, and the diameters of the wires constituting the same layer are the same, and the wires constituting the outer layer are formed, and the wires constituting each of the layers other than the first outer layer and the outermost layer are inside. The outer thick diameter wires that form the outermost layer and are arranged outside between the strands that are adjacent in the circumferential direction form the inside of the outermost layer and are located between the strands that are adjacent in the circumferential direction. By arranging it on the outside and arranging two outer small diameter wires in the circumferential direction between the outer thick diameter wires adjacent to each other in the circumferential direction, the cross-sectional shape of the stranded wire conductor becomes a substantially perfect circular shape, and the stranded wire conductor. It is possible to reduce the diameter, reduce the weight, and improve the flexibility.

Further, unlike the twisted wire conductor 201 of the prior art 2, the twisted wire conductor of the present invention can have a substantially perfect circular shape in the outer shape of the twisted wire conductor without passing the wire through a compression die. It is possible to maintain the physical characteristics of the wire without impairing the physical characteristics such as elongation characteristics, flexibility, and flexibility, and it is possible to obtain highly reliable quality. It can be effectively used in fields and the like.

The schematic diagram of the cross section of the stranded conductor which concerns on Example 1 of this invention. The schematic diagram of the cross section which shows an example of the stranded conductor which concerns on Example 3 of this invention. The schematic diagram of the cross section which shows the other example of the stranded conductor which concerns on Example 3 of this invention. The schematic diagram of the cross section which shows the other example of the stranded conductor which concerns on Example 3 of this invention. The schematic diagram of the cross section which shows the other example of the stranded conductor which concerns on Example 3 of this invention. The schematic diagram of the cross section which shows an example of the stranded conductor which concerns on Example 4 of this invention. FIG. 6 is a schematic cross-sectional view showing another example of the stranded conductor according to the fourth embodiment of the present invention. The schematic diagram of the cross section which shows an example of the stranded conductor which concerns on Example 5 of this invention. The schematic diagram of the cross section of the stranded conductor of the prior art 1. The schematic diagram of the cross section of the stranded conductor of the prior art 2.

A mode for carrying out the present invention will be described with reference to the drawings.

[Example 1]
FIG. 1 is a schematic cross-sectional view of the stranded conductor 1 according to the first embodiment of the present invention, which is cut in a direction orthogonal to the axial direction. Omitted for the sake of.

The stranded conductor 1 has an inner layer 2 and an outer layer 3 provided on the outside of the inner layer 2, and is composed of a total of 19 strands 11, 12, 13, 14, 15, and 16. The inner layer 2 is composed of one center line 11.

The outer layer 3 is composed of four layers, a first outer layer 4, a second outer layer 5, a third outer layer 6, and an outermost layer 7.

As shown in FIG. 1, the first outer layer 4 is configured by arranging three first outer layer wires (strand wires) 12 provided on the outside of the inner layer 2 in the circumferential direction.

As shown in FIG. 1, the second outer layer 5 is provided on the outside of the first outer layer 4, and surrounds three second outer layer lines (strands) 13 having the same number as the number of the first outer layer lines 12. It is configured to be arranged in the direction.

As shown in FIG. 1, the third outer layer 6 is provided on the outside of the second outer layer 5, and surrounds the three third outer layer lines (strands) 14 having the same number as the first outer layer lines 12. It is configured to be arranged in the direction.

As shown in FIG. 1, the outermost layer 7 has six outer diameter wires (strand wires) 15, which are twice the number of the first outer layer wires 12, and the same number as the first outer layer wires 12. A total of nine strands 15, 16 of the three outer thick diameter wires (strands) 16 are configured to surround the first outer layer 4.

The first outer layer lines 12 constituting the first outer layer 4 are arranged so as to be separated in the circumferential direction, and a gap 18 is formed between the adjacent first outer layer lines 12, 12.

The second outer layer line 13 constituting the second outer layer 5 constitutes the first outer layer 4 and is located on the outer side of the gap 18 between the first outer layer lines 12 and 12 adjacent to each other in the circumferential direction. It is provided so as to abut on the wires 12 and 12. Further, the second outer layer line 13 is arranged so as to be separated in the circumferential direction, and a gap 19 is formed between the adjacent second outer layer lines 13 and 13.

The third outer layer line 14 constituting the third outer layer 6 constitutes the second outer layer 5 and is located on the outer side of the gap 19 between the second outer layer lines 13 and 13 adjacent to each other in the circumferential direction. It is provided so as to abut on the wires 13 and 13. Further, the third outer layer line 14 is arranged so as to be separated in the circumferential direction, and a gap 20 is formed between the adjacent third outer layer lines 14, 14.

The outer thick diameter wire 16 constituting the outermost layer 7 constitutes the third outer layer 6 and is located on the outer side of the gap 20 between the third outer layer lines 14 and 14 adjacent to each other in the circumferential direction. It is provided so as to come into contact with 14 and 14.

The outer thin diameter wire 15 constituting the outermost layer 7 has two outer diameter wires 16 in the circumferential direction between the outer thick diameter wires 16 and 16 adjacent to each other in the circumferential direction, and the third outer layer constituting the outer thick diameter wire 16 and the third outer layer 6. It is arranged so as to abut on the wire 14.

Copper such as bare copper wire, oxygen-free copper wire, linear crystal oxygen-free copper wire, and single-crystal high-purity oxygen-free copper wire can be used as the base wire for each of the strands 11, 12, 13, 14, 15, and 16. Wires, copper wires plated with tin, nickel, silver, etc., aluminum wires, various alloy wires, and insulation-coated wires such as enamel wires, litz wires, and formal wires can be used. The same material may be used or different materials may be used for the materials of the respective strands 11, 12, 13, 14, 15, and 16.

The diameter of the center line 11 is d1 (not shown), the diameter of the first outer layer line 12 is d2, the diameter of the second outer layer line 13 is d3, the diameter of the third outer layer line 14 is d4, and the outer diameter line 15 When the diameter is d5 and the diameter of the outer thick wire 16 is d6, the diameter d2 of the first outer layer line 12 is set to be thinner than the diameter d3 of the second outer layer line 13, and the diameter d3 of the second outer layer line 13 is set to be smaller. The diameter d5 of the outer thin wire 15 is set to be thinner than the diameter d5 of the outer thin wire 15, the diameter d5 of the outer thin wire 15 is set to be thinner than the diameter d4 of the third outer layer wire 14, and the diameter d4 of the third outer layer wire 14 is the outer thick wire. The diameter of 16 is set to be smaller than the diameter of d6.

In the first embodiment, the relationship of d1 = 0.325 × d3, d2 = 0.475 × d3, d4 = 2.425 × d3, d5 = 2.225 × d3, d6 = 3.625 × d3 is established. Each strand 11, 12, 13, 14, 15, 16 was used.

As described above, the diameters of the strands 12, 13 and 14 constituting the outer layers 3 and the respective layers 4, 5 and 6 other than the outermost layer 7 are different for each layer and constitute the same layer. The diameters of the strands are configured to be the same. Further, the diameters of the strands 12, 13 and 14 constituting the layers 4, 5 and 6 constituting the layers other than the outermost layer 7 gradually increase from the inside to the outside.

Further, the cross-sectional shape of the stranded wire conductor 1 is a substantially perfect circular shape, that is, the distance L1 from the center A of the center line 11 to the outermost edge B of the outer thick diameter line 16 and the outer thinness from the center A of the center line 11. The diameter line 15 is formed so that the distance L2 to the outermost edge C is the same.

Since the stranded conductor 1 of the present invention has the above structure, it has the following actions and effects.

The outer shape of the stranded conductor 1 is substantially circular, and as described above, the diameter can be made smaller than that of the stranded conductor 101 of the prior art 1, so that the thickness of the insulating material coating can be reduced and the thickness is substantially uniform. Therefore, the amount of insulating material can be reduced and the cost can be reduced.

Further, unlike the twisted wire conductor 201 of the prior art 2, the twisted wire conductor 1 can have a substantially perfect circular shape in the outer shape of the twisted wire conductor 1 without passing a wire through a compression die, and thus has a stretch characteristic. , Flexibility, flexibility, and other physical characteristics are not impaired, the physical characteristics of the wire can be maintained, and highly reliable quality can be obtained. It can be effectively used in such cases.

Further, the stranded conductor 1 has improved physical characteristics such as stretchability, flexibility, and flexibility by increasing the porosity and lowering the arrangement density of the strands as compared with the prior arts 1 and 2. Can be made to.

[Example 2]
In the strands constituting the stranded conductor 1 of the first embodiment, the diameter d2 of the first outer layer wire 12 is smaller than the diameter d3 of the second outer layer wire 13, and the diameter d3 of the second outer layer wire 13 is the third outer layer. Wires 11, 12, 13, 14, 15, 16 and stranded wires were used in which the diameter d4 of the third outer layer wire 14 was set to be thinner than the diameter d4 of the wire 14 and the diameter d4 of the third outer layer wire 14 was set to be thinner than the diameter d6 of the outer thick wire 16. If the conductor 1 is configured, the stranded conductor 1 can be configured by using any wire other than the wire having the diameter described in the first embodiment. Further, the outermost layer 7 may be compressed from the outside with a compression die or the like.

By this compression, the outer peripheral portions of the outer thin diameter wire 15 and the outer thick diameter wire 16 forming the outermost layer 7 are compression-deformed, and the outer shape of the stranded conductor can be made closer to a perfect circular shape. The compression with a compression die or the like may be performed when the stranded conductor 1 is manufactured, or may be performed after the stranded conductor 1 is manufactured. The compression rate is set arbitrarily.

Since other structures are the same as those in the first embodiment, the description thereof will be omitted.

Also in the second embodiment, the same effect as that of the first embodiment can be exhibited.

[Example 3]
In the first and second embodiments, the first outer layer line 12 constituting the first outer layer 4, the second outer layer line 13 constituting the second outer layer 5, and the third outer layer line 14 constituting the third outer layer 6 are used. The outer thick diameter wires 16 constituting the outermost layer 7 are set to 3 each, and the outer thin diameter wires 15 constituting the outermost layer 7 are set to 6, but the number of the first outer layer wires 12 and the second outer layer 5 are set. The number of outer thick diameter wires 16 is the same as that of the second outer layer wire 13 constituting the third outer layer 6 and the third outer layer wire 14 constituting the third outer layer 6, and the number of outer thin diameter wires 15 is the first outer layer wire 12. It may be twice the number, and if the number of the first outer layer lines 12 is 3 or more, it can be set to any number.

Further, the diameter d2 of the first outer layer line 12 is smaller than the diameter d3 of the second outer layer line 13, the diameter d3 of the second outer layer line 13 is smaller than the diameter d4 of the third outer layer line 14, and the diameter d4 of the third outer layer line 14 is smaller. If the diameter d4 is smaller than the diameter d6 of the outer thick diameter wire 16, the diameters of the respective strands 11, 12, 13, 14, 15, and 16 can be arbitrarily set.

For example, as shown in FIG. 2, the first outer layer line 12 of the first outer layer 4, the second outer layer line 13 constituting the second outer layer 5, the third outer layer line 14 constituting the third outer layer 6, and the outermost layer. The outer thick wire 16 constituting the 7 is 4 each, and the outer thin wire 15 is 8 each, and the first outer layer wire 12, the second outer layer wire 13, and the third outer layer wire 14 are separated from each other in the circumferential direction. In the case of the stranded conductor 21 arranged in the above direction, d1 = 0.438 × d3, d2 = 0.525 × d3, d4 = 1.850 × d3, d5 = 1.425 × d3, d6 = 2.375 ×. By using the wire rod that is the basis of each of the strands 11, 12, 13, 14, 15, and 16 for which the relationship of d3 is established, the cross-sectional shape of the stranded conductor 21 is substantially circular with no compression or a low compression ratio. Can be done.

For example, as shown in FIG. 3, the first outer layer line 12 of the first outer layer 4, the second outer layer line 13 constituting the second outer layer 5, the third outer layer line 14 constituting the third outer layer 6, and the outermost layer. The outer thick wire 16 constituting the 7 is 5 each, and the outer thin wire 15 is 10, and the first outer layer wire 12, the second outer layer wire 13, and the third outer layer wire 14 are separated from each other in the circumferential direction. In the case of the stranded conductor 22 arranged in the above direction, d1 = 0.638 × d3, d2 = 0.563 × d3, d4 = 1.563 × d3, d5 = 1.038 × d3, d6 = 1.875 ×. By using the wire rod that is the basis of each of the strands 11, 12, 13, 14, 15, and 16 for which the relationship of d3 is established, the cross-sectional shape of the stranded conductor 22 is substantially circular with no compression or a low compression ratio. Can be done.

For example, as shown in FIG. 4, the first outer layer line 12 of the first outer layer 4, the second outer layer line 13 constituting the second outer layer 5, the third outer layer line 14 constituting the third outer layer 6, and the outermost layer. The outer thick wire 16 constituting the 7 is 6 each, and the outer thin wire 15 is 12, and the first outer layer wire 12, the second outer layer wire 13, and the third outer layer wire 14 are separated from each other in the circumferential direction. In the case of the stranded conductor 23 arranged in the above direction, d1 = 0.875 × d3, d2 = 0.625 × d3, d4 = 1.419 × d3, d5 = 0.875 × d3, d6 = 1.588 × By using the wire rod that is the basis of each of the strands 11, 12, 13, 14, 15, and 16 for which the relationship of d3 is established, the cross-sectional shape of the stranded conductor 23 is substantially circular with no compression or a low compression ratio. Can be done.

For example, as shown in FIG. 5, the first outer layer line 12 of the first outer layer 4, the second outer layer line 13 constituting the second outer layer 5, the third outer layer line 14 constituting the third outer layer 6, and the outermost layer. The outer thick wire 16 constituting the 7 is 7 each, and the outer thin wire 15 is 14, and the first outer layer wire 12, the second outer layer wire 13, and the third outer layer wire 14 are separated from each other in the circumferential direction. In the case of the stranded conductor 24 arranged in the above direction, d1 = 1.313 × d3, d2 = 0.625 × d3, d4 = 1.406 × d3, d5 = 0.813 × d3, d6 = 1.469 ×. By using the wire rod that is the basis of each of the strands 11, 12, 13, 14, 15, and 16 for which the relationship of d3 is established, the cross-sectional shape of the stranded conductor 24 is substantially circular with no compression or a low compression ratio. Can be done.

Since other structures are the same as those in the first and second embodiments, the description thereof will be omitted.

Also in this Example 3, the same action and effect as those of Examples 1 and 2 can be exhibited.

[Example 4]
In the above Examples 1 to 3, the inner layer 2 is composed of one center line 11, but the center line 31 and the number of the first outer layer lines 12 of the first outer layer 4 are located outside the center line 31. The inner layer 33 may be composed of the first inner layer 32 formed by arranging the same number of first inner layer lines 17 in the circumferential direction.

The first inner layer lines 17 are arranged outside the center line 31, and the first inner layer lines 17 and 17 adjacent to each other in the circumferential direction are arranged so as to be in contact with each other. As the wire rod as the base of the first inner layer wire 17, the same wire rod as the wire rod as the base of the strands 11, 12, 13, 14, 15, 16 is used.

The first outer layer line 12 is arranged so as to abut on the first inner layer lines 17 and 17 on the outside of the valley portion 34 composed of the first inner layer lines 17 and 17 adjacent to each other in the circumferential direction.

For example, as shown in FIG. 6, one center line 31 is arranged and covered with seven first inner layer lines 17 around the center line 31 to form the first inner layer 32, and the first inner layer 32 is formed. The first outer layer 4 is formed by arranging seven first outer layer lines 12 so as to be spaced apart from each other in the circumferential direction, and the seven second outer layer lines 13 are circumferentially arranged around the first outer layer 4. The second outer layer 5 is arranged so as to be separated in the direction, and seven third outer layer lines 14 are arranged so as to be separated in the circumferential direction around the second outer layer 5. The outer layer 6 may be formed, and the outermost layer 7 may be formed by covering the circumference of the third outer layer 6 with 14 outer thin diameter wires 15 and 7 outer thick diameter wires 16 to form a stranded wire conductor 35.

The diameter of the first inner layer line 17 is d7, and d1 = 0.600 × d3, d2 = 0.625 × d3, d4 = 1.406 × d3, d5 = 0.813 × d3, d6 = 1.469 × d3. , D7 = 0.463 × d3 is established. By using the base wire of each strand 11, 12, 13, 14, 15, 16 and 17, the stranded wire conductor is uncompressed or has a low compression ratio. The cross-sectional shape of 35 can be a substantially perfect circular shape.

For example, as shown in FIG. 7, the first inner layer line 17 of the first inner layer 32, the first outer layer line 12 of the first outer layer 4, the second outer layer line 13 constituting the second outer layer 5, and the third outer layer. The third outer layer wire 14 constituting 6 and the outer thick diameter wire 16 constituting the outermost layer 7 are each 11 lines, and the outer thin diameter wire 15 is 22 lines, and the first outer layer line 12, the second outer layer line 13, and the second outer layer line 13 are used. 3 In the case of the stranded conductor 36 in which the outer layer wires 14 are arranged apart from each other in the circumferential direction, d1 = 1.538 × d3, d2 = 0.725 × d3, d4 = 1.250 × d3, d5 = Uncompressed or low compression rate by using the wire that is the basis of each of the strands 11, 12, 13, 14, 15, 16 and 17, for which the relationship of 0.600 × d3, d7 = 0.625 × d3 is established. Therefore, the cross-sectional shape of the stranded conductor 36 can be made into a substantially perfect circular shape.

Since other structures are the same as those in the first to third embodiments, the description thereof will be omitted.

Also in this Example 4, the same action and effect as those of Examples 1 to 3 can be exhibited.

[Example 5]
In the above Examples 1 to 3, the outer layer 3 is composed of four layers of the first outer layer 4, the second outer layer 5, the third outer layer 6 and the outermost layer 7, but the outer layer may be composed of four or more layers. ..

The center line 11, the first outer layer 4, the second outer layer 5, the third outer layer 6, and the outermost layer 7 are configured in the same manner as in Examples 1 to 4.

Each layer constituting the outer layer added in the present embodiment with respect to the above-mentioned Examples 1 to 4 is composed of the same number of strands as the number of the first outer layer wires 12 of the first outer layer 4.

With respect to Examples 1 to 4, the strands constituting the layer constituting the outer layer added in this embodiment constitute the layer constituting the inside thereof and are arranged outside the gap between the adjacent strands. The strands that form the layer that constitutes the added outer layer and that are adjacent to each other in the circumferential direction are arranged so as to be separated from each other.

The outer thick diameter wire 16 constituting the outermost layer 7 constitutes a layer constituting the inner layer thereof, and is arranged on the outer side of the gap between the strands adjacent to each other in the circumferential direction.

Two outer thin diameter wires 15 constituting the outermost layer 7 are arranged in the circumferential direction between the outer thick diameter wires 16 and 16 adjacent to each other in the circumferential direction.

In contrast to Examples 1 to 4 above, the wire rods that are the basis of the strands that make up each layer that constitutes the outer layer added in this example are the bases of the strands 11, 12, 13, 14, 15, 16, and 17. Use the same wire as the wire.

For example, as shown in FIG. 8, one center line 31 is arranged and covered with 11 first inner layer lines 17 around the center line 31 to form the first inner layer 32, and the first inner layer 32 is formed. The first outer layer 4 is formed by arranging 11 first outer layer lines 12 so as to be spaced apart from each other in the circumferential direction, and 11 second outer layer lines 13 are formed around the first outer layer 4. The second outer layer 5 is configured by arranging them so as to be separated in the direction, and 11 third outer layer lines 14 are arranged so as to be separated in the circumferential direction around the second outer layer 5 to form the third outer layer. 6 is configured, and 11 fourth outer layer lines 51 are arranged around the third outer layer 6 so as to be spaced apart from each other in the circumferential direction to form the fourth outer layer 52, and the circumference of the fourth outer layer 52 is 22. The outermost layer 7 may be formed by covering with the outer thin wire 15 of the book and the outer thick wire 16 of the book 16 to form the stranded wire conductor 53.

The outer layer 54 of the stranded conductor 53 is composed of five layers: a first outer layer 4, a second outer layer 5, a third outer layer 6, a fourth outer layer 52, and an outermost layer 7.

The fourth outer layer line 51 constituting the fourth outer layer 52 constitutes the third outer layer 6 and is located on the outer side of the gap 20 between the third outer layer lines 14 and 14 adjacent to each other in the circumferential direction. It is provided so as to abut on the wires 14 and 14. Further, the fourth outer layer line 51 is arranged so as to be separated in the circumferential direction, and a gap 55 is formed between the adjacent fourth outer layer lines 51 and 51.

The outer thick diameter wire 16 constituting the outermost layer 7 constitutes the fourth outer layer 52 and is located on the outer side of the gap 55 between the fourth outer layer wires 51 and 51 adjacent to each other in the circumferential direction. It is provided so as to come into contact with 51, 51.

The diameter of the fourth outer layer line 51 is d8, and d1 = 1.586 × d3, d2 = 0.741 × d3, d4 = 1.379 × d3, d5 = 0.828 × d3, d6 = 1.534 × d3. , D7 = 0.621 × d3, d8 = 1.724 × d3. With compression or a low compression ratio, the cross-sectional shape of the stranded conductor 53 can be made into a substantially perfect circular shape.

Since other structures are the same as those in Examples 1 to 4, the description thereof will be omitted.

Also in this Example 5, the same action and effect as those of Examples 1 to 4 can be exhibited.

1,1,2,22,23,24,35,36,53 Stranded conductor 2,33 Inner layer 3,41,54 Outer layer 4 First outer layer 7 Outer layer 11,31 Center line 12 First outer layer line 15 Outer diameter wire 16 Outer diameter wire 17 First inner layer wire
32 First inner layer

Claims (3)

An inner layer composed of one center line arranged in the center, or one center line arranged in the center, and a plurality of first inner layer lines arranged outside the center line in the circumferential direction. It has an inner layer composed of the first inner layer formed by setting.
An outer layer composed of four or more layers is provided on the outside of the inner layer.
The first outer layer is formed on the innermost side of the outer layer, and the outermost layer is formed on the outermost side of the outer layer.
The first outer layer is composed of a plurality of first outer layer lines arranged apart from each other in the circumferential direction.
The outer layer is configured, and the first outer layer and each layer other than the outermost layer are arranged so that the same number of strands as the number of the first outer layer wires are separated in the circumferential direction. ,
The outermost layer has an outer diameter wire that is twice the number of the first outer layer wire and an outer diameter wire that has the same number as the number of the first outer layer wire and is thicker than the outer diameter wire. Configure and
The diameters of the strands constituting each layer other than the outermost layer in the outer layer are different for each layer, and the diameters of the strands constituting the same layer are the same.
The strands constituting the outer layer and the respective layers other than the first outer layer and the outermost layer are arranged inside the strands and outside between the strands adjacent to each other in the circumferential direction.
The outer thick diameter wires constituting the outermost layer are arranged inside the outermost layer and outside between the strands adjacent to each other in the circumferential direction, and two wires are arranged between the outer thick diameter wires adjacent to each other in the circumferential direction. A stranded conductor characterized by arranging the outer diameter wires of the above in the circumferential direction. The distance from the center of the stranded conductor to the outer edge of the outer diameter wire constituting the outermost layer, and
The stranded conductor according to claim 1, wherein the distance from the center of the stranded conductor to the outer edge of the outer thick wire constituting the outermost layer is the same. The stranded conductor according to claim 1 or 2, wherein the strands constituting the outermost layer are compressionally deformed from the outside.

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