JP6751956B1 - 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 center line 13 and a first inner layer 14 formed by arranging six inner layer lines 2 surrounding the center line 13 and twelve inner layer lines 2 are arranged outside the first inner layer 14. A first outer layer 17 composed of a second inner layer 15 formed by setting, six small diameter wires 3 outside the second inner layer 15, and 12 medium diameter wires 4 thicker than the small diameter wire 3. A first thick wire 5 outside the first outer layer 17 and thicker than the medium diameter wire 4, and six second thick wires 6 thicker than the first thick wire 5. It has two outer layers 18, and in the first outer layer 17, the small diameter wires 3 are arranged apart from each other in the circumferential direction, and two small diameter wires 3 and 3 are arranged between the small diameter wires 3 and 3 arranged at the closest positions in the circumferential direction. The medium-diameter wire 4 is arranged in the circumferential direction, the second thick-diameter wire 6 is arranged apart in the circumferential direction in the second outer layer 18, and the second thick-diameter wire 6 is arranged at the position closest to the circumferential direction. Two first thick diameter wires 5 and 5 were arranged in the circumferential direction between the and 6. [Selection diagram] Fig. 1

Description

The present invention relates to a stranded conductor.

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. Copper wire is mainly used as this wire, and the copper wire plated with tin, nickel, silver or the like, aluminum, or various alloy wires is used.

For example, as shown in FIG. 3, one wire 101 is arranged at the center, and six wires 102 are arranged around the wire 101 to provide a first inner layer 103. Twelve strands 104 are arranged in the circumferential direction on the outside of the inner layer 103 to provide a second inner layer 105, and 18 strands 106 are arranged in the circumferential direction on the outside of the second inner layer 105. A third inner layer 107 is provided, and 18 strands 108 are arranged in the circumferential direction to provide an outer layer 109 on the outside of the third inner layer 107, and a total of 55 strands 101, 102, 104, 106, A stranded conductor 110 formed by arranging 108 as shown in FIG. 3 and twisting them in the circumferential direction is known. The strands 101, 102, 104, 106, and 108 constituting the stranded conductor 110 are all made of strands having the same diameter. This stranded conductor 110 is referred to as the prior art 1.

Further, as described in Patent Document 1, a strand having a circular cross section and all having the same diameter is twisted in one direction and passed through a compression die to make the cross-sectional shape of the conductor close to a perfect circle. There is a wire conductor. Hereinafter, this stranded conductor will be referred to as the prior art 2.

As the stranded conductor of the prior art 2, for example, as shown in FIG. 4, four strands 201 are arranged in the central portion to form the central layer 202, and 11 wires are provided outside the central layer 202. The strands 203 are arranged in the circumferential direction to provide the first inner layer 204, and 17 strands 205 are arranged in the circumferential direction to provide the second inner layer 206 on the outside of the first inner layer 204. 2 Wires 201, 203, 205, 207 arranged so as to provide an outer layer 208 by arranging 23 wires 207 in the circumferential direction on the outside of the inner layer 206 are passed through a compression die to form a perfect circle. It is known that the shape is close to. The wires 201, 203, 205, and 207 that make up this stranded conductor are all made of wires of the same diameter.

Japanese Unexamined Patent Publication No. 11-25758

In the stranded conductor 110 of the prior art 1, since the third inner layer 107 is formed in a hexagonal shape and the strands 108 constituting the outer layer 109 are not arranged outside each apex portion thereof, the outer layer 109 is formed. However, there is a problem that a defective portion 111 having no strand 108 is formed in a part in the circumferential direction, and a coating material enters the defective portion 111 in the insulating coating process, so that a uniform coating thickness cannot be formed.

Further, in the terminal processing for stripping the covering material, there is a problem that problems such as resin biting occur and the reliability of the electric wire is significantly impaired.

Therefore, in order to reduce the depth of the concave shape, it is conceivable to pass a compression die that requires a high compression rate to make the shape close to a perfect circle. There is a problem that physical properties such as flexibility and flexibility are impaired.

Further, the stranded conductor of the above-mentioned prior art 2 requires a high compressibility in order to form a shape close to a perfect circle in the constituent arrangement, and the elongation property is exhibited by the compressive deformation at a high compressibility from the outside. There is a problem that physical properties such as flexibility and flexibility are impaired.

Therefore, an object of the present invention is to provide a stranded conductor that solves the above problems.

In order to solve the above problems, the invention according to claim 1 comprises forming an outer layer with a first outer layer and a second outer layer provided outside the first outer layer, and providing an inner layer inside the outer layer.
The inner layer has a center line, a first inner layer formed by arranging six inner layer lines surrounding the center line, and twelve inner layer lines arranged outside the first inner layer. Consists of the formed second inner layer,
The second inner layer is formed into a hexagonal shape.
The first outer layer is composed of 6 small diameter wires and 12 medium diameter wires thicker than the small diameter wires.
The second outer layer is composed of 12 first thick diameter wires thicker than the medium diameter wire and 6 second thick diameter wires thicker than the first thick diameter wire.
The small diameter wire is arranged outside each hexagonal top of the second inner layer and on a line connecting the center of the center line and the inner layer line forming the top.
In the first outer layer, the small diameter wires are arranged apart from each other in the circumferential direction, and the two medium diameter wires are arranged in the circumferential direction between the small diameter wires arranged at the positions closest to each other in the circumferential direction. ,
In the second outer layer, the second thick diameter wires are arranged apart from each other in the circumferential direction, and the two first thick diameter wires are arranged between the second thick diameter wires arranged at the closest positions in the circumferential direction. Arrange in the circumferential direction,
The second thick diameter wire is arranged outside the valley portion composed of the two medium diameter wires arranged between the small diameter wires arranged at the closest positions in the circumferential direction.
The feature is that the small diameter wire is arranged inside the valley portion composed of the two first large diameter wires arranged between the second large diameter wires arranged at the closest positions in the circumferential direction. Is what you do.

The invention according to claim 2 is characterized in that, in the invention according to claim 1 , the inner layer line is formed thicker than the thin diameter line, and the middle diameter line is formed thicker than the inner layer line. is there.

The invention according to claim 3 is characterized in that, in the invention according to claim 1 , the inner layer line is formed thicker than the small diameter line, and the diameter of the middle diameter line and the inner layer line are the same. It is a thing.

The invention according to claim 4 is characterized in that, in the invention according to any one of claims 1 to 3 , the strands constituting the outermost layer in the radial direction are compressed and deformed from the outside. It is to be.

In the stranded wire conductor of the present invention, an outer layer is composed of a first outer layer and a second outer layer provided outside the first outer layer, an inner layer is provided inside the outer layer, and the inner layer is formed by a center line and the center. It is composed of a first inner layer formed by arranging six inner layer lines surrounding the line and a second inner layer formed by arranging twelve inner layer lines on the outside of the first inner layer. The strands constituting the inner layer are all composed of the same wire diameter, and the first outer layer is composed of 6 small diameter wires and 12 medium diameter wires thicker than the small diameter wires, and the second The outer layer comprises 12 first thick diameter wires thicker than the middle diameter wire and 6 second thick diameter wires thicker than the first thick diameter wire, and the small diameter wire is formed in the first outer diameter wire. The two medium-diameter wires are arranged in the circumferential direction between the small-diameter wires arranged apart from each other in the circumferential direction, and the second thick wire is arranged in the second outer layer. The diameter wires are arranged apart from each other in the circumferential direction, and the two first thick diameter wires are arranged in the circumferential direction between the second thick diameter wires arranged at the positions closest to each other in the circumferential direction. It is possible to provide a stranded wire conductor in which the cross-sectional shape of the stranded wire conductor is close to a perfect circular shape and the physical characteristics of the strands are not deteriorated, without any problem or with a low compression ratio.

In addition, since the outer circumference of the stranded conductor can be made into a shape close to a perfect circle, it is possible to form a uniform insulation coating thickness, easy terminal processing, and high-quality insulation with excellent electrical and physical properties. Can provide electric wires.

The cross-sectional view of the stranded conductor which concerns on Example 1 of this invention. The cross-sectional view of the stranded conductor which concerns on Example 2 of this invention. The cross-sectional view of the stranded conductor according to the prior art 1. The cross-sectional view for explaining the prior art 2.

A mode for carrying out the present invention will be described with reference to the examples shown in the figure.

[Example 1]
FIG. 1 is a cross-sectional view cut in a direction orthogonal to the axial direction of the stranded conductor 1 according to the first embodiment of the present invention, in which the cross-sectional shape of the wire rod on which each wire is based and the cross-sectional shape of the wire are the same. It is a schematic diagram in the case of. The diagonal lines showing the cross sections of each strand are omitted to avoid complication of the figure.

As shown in FIG. 1, the stranded conductor 1 is formed by twisting a total of 55 strands arranged in the axial direction. These strands are inner layer wire (strand wire) 2, small diameter wire (strand wire) 3, medium diameter wire (strand wire) 4, first thick diameter wire (strand wire) 5, and second thick diameter wire (strand wire). ) It is composed of 5 types of 6. Each wire is constructed based on a (round) wire having a circular cross section with a different diameter. The inner layer wire 2, the small diameter wire 3, the medium diameter wire 4, the first thick diameter wire 5, and the second thick diameter wire 6 are formed based on wires having a circular cross section (round shape) having different diameters. is there.

As these wire rods, a copper wire, a copper wire plated with tin, nickel, or silver, an aluminum wire, or various alloy wires can be used as in the conventional case.

The stranded conductor 1 is composed of an inner layer 11 and an outer layer 12 formed on the outer side of the inner layer 11.

The inner layer 11 is a first inner layer composed of a center line 13 composed of one inner layer line 2 located at the center and six inner layer lines 2 arranged so as to surround the outer periphery of the center line 13. It is composed of 14 and a second inner layer 15 composed of 12 inner layer lines 2 arranged so as to surround the outer periphery of the first inner layer 14.

The outer layer 12 is arranged so as to surround the outer periphery of the first outer layer 17 composed of a total of 18 lines consisting of 6 small diameter wires 3 and 12 medium diameter wires 4. It is composed of a second outer layer 18 formed by a total of 18 wires including a first thick diameter wire 5 of a book and six second thick diameter wires 6.

The inner layer wire 2, the small diameter wire 3, the medium diameter wire 4, the first thick diameter wire 5, and the second thick diameter wire 6 are formed based on wire rods having a circular cross section (round shape) having different diameters. It is a thing. As these wire rods, a copper wire, a copper wire plated with tin, nickel, or silver, an aluminum wire, various alloy wires, or the like can be used as in the conventional case.

The diameter d ₁ of the small diameter wire 3 is formed to be the thinnest of the five types of strands, and the diameter d ₂ of the inner layer wire ₂ is formed to be thicker than the diameter d ₁ of the small diameter wire 3 of the medium diameter wire 4. The diameter d ₃ is formed thicker than the diameter d ₂ of the inner layer line 2, the diameter d ₄ of the first thick wire 5 is formed thicker than the diameter d ₃ of the medium diameter wire 4, and the diameter of the second thick wire 6 is formed. d ₅ is formed to be thicker than the diameter d ₄ of the first thick diameter wire 5.

The center line 13, the first inner layer 14, and the second inner layer 15 constituting the inner layer 11 are all composed of the same inner layer line 2, and the inner layer 11 is composed of a total of 19 inner layer lines 2 arranged in a concentric twisted arrangement. The outer shape of the inner layer 11 is formed into a substantially hexagonal shape as shown in FIG.

As shown in FIG. 1, the small diameter line 3 forming the first outer layer 17 is located at the position farthest from the center A of the center line 13 among the inner layer lines 2 constituting the second inner layer 15, and is the second inner layer. It is arranged so as to be outside the inner layer line 2A constituting the top 15A of the 15 and substantially located on a line connecting the center of the center line 13 and the inner layer line 2A forming the top 15A. Further, as shown in FIG. 1, the small diameter wires 3 forming the first outer layer 17 are provided so as to be separated from each other in the circumferential direction.

As shown in FIG. 1, two medium-diameter wires 4 constituting the first outer layer 17 are arranged adjacent to each other in the circumferential direction between the small-diameter wires 3 and 3 arranged at the closest positions in the circumferential direction. Has been done.

As shown in FIG. 1, the second thick diameter line 6 constituting the second outer layer 18 constitutes a valley portion formed between the middle diameter lines 4 and 4 adjacent to each other in the circumferential direction and constitutes the first outer layer 17. One is arranged on the outside of 19.

As shown in FIG. 1, two first thick diameter wires 5 constituting the second outer layer 18 are adjacent to each other in the circumferential direction between the second thick diameter wires 6 and 6 arranged at the closest positions in the circumferential direction. Is arranged. Further, as shown in FIG. 1, one small diameter line 3 is arranged inside the valley portion 20 formed between the adjacent first large diameter lines 5 and 5.

With the above configuration, the outer shape of the stranded conductor 1 can be a shape close to a substantially perfect circular shape. That is, the distance L1 from the center A of the center line 13 to the outermost edge B of the first thick diameter line 5 forming the second outer layer 18 and the second thick line 18 forming the second outer layer 18 from the center A of the center line 13. The distance L2 to the outermost edge C of the diameter wire 6 is formed to be substantially the same. That is, as shown in FIG. 1, the outermost edge ends B and C of all the first thick diameter lines 5 and the second thick diameter lines 6 forming the second outer layer 18 are the first thick from the center A of the center line 13. It is formed so as to be located near a perfect circle line having a radius L1 of a distance L1 to the outermost edge end B of the diameter line 5.

For example,
d ₁ = 0.82d ₂ ... (1)
d ₃ = 1.05 d ₂ ... (2)
d ₄ = 1.26d ₂ ... (3)
d ₅ = 1.36 d ₂ ... (4)
By setting so as to satisfy the relational expression of, even if the stranded conductor 1 is formed without compression, the distance L1 from the center point A of the stranded conductor 1 to the outermost edge B of the first thick diameter wire 5 The distance L2 from the center point A to the outermost edge C of the 2 thick diameter wire 6 is substantially the same, and each wire can be brought into mutual contact with substantially all adjacent wires.

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

The outer shape of the stranded conductor 1 can be made into a substantially perfect circular shape, and the strands 2 to 6 can come into contact with substantially all the adjacent strands 2 to 6.

The outer shape of the stranded conductor 1 is substantially circular, and the thickness of the insulating material coating can be made thin and substantially uniform over the entire outer circumference, and the amount of the insulating material can be reduced and the cost can be reduced. ..

Incidentally, the wire constituting the stranded conductor 1 of the first embodiment, the diameter d ₁ of the thin line 3, thinnest formed in the five wire, the diameter d ₂ of the inner layer line 2, thicker form than the diameter d ₁ of the thin line 3, the diameter d ₃ of the medium-diameter line 4, thicker form than the diameter d ₂ of the inner layer line 2, the diameter d ₄ of the first thick diameter line 5, medium diameter line If the diameter d ₅ of the second thick wire 6 is thicker than the diameter d _{3 of} the first thick wire 5 and the diameter d 5 of the second thick wire 6 is thicker than the diameter d ₄ of the first thick wire 5, other than the wires having the diameters listed above. The stranded wire conductor 1 can also be formed by using a wire having an arbitrary diameter.

Further, the stranded conductor 1 may be formed by compressing the outer peripheral portion of the second outer layer 18 with a compression die or the like. By this compression, the outer peripheral portions of the strands 5 and 6 forming the second outer layer 18 are compressed and 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 arbitrarily set.

Since the stranded conductor 1 of the first embodiment can be formed without compression or at a compressibility lower than that of the stranded conductor of the prior art 2, it has stretch characteristics, flexibility, and flexibility. The physical properties such as the above can be improved as compared with the stranded conductor of the above-mentioned prior art 2.

[Example 2]
FIG. 2 is a cross-sectional view cut in a direction orthogonal to the axial direction of the stranded conductor 21 according to the second embodiment of the present invention. It is a schematic diagram in the case of. The diagonal lines showing the cross sections of each strand are omitted to avoid complication of the figure.

In the first embodiment, the diameter d ₂ of the inner layer wire 2 is formed thinner than the diameter d ₃ of the middle diameter wire 4, but the stranded conductor 21 in the second embodiment of the present invention has the diameter d _{2 of the} inner layer wire _2. and it is obtained by the same form as the diameter d ₃ of the medium-diameter line 4.

For example,
d ₁ = 0.82d ₂ ... (5)
d ₃ = 1.00d ₂ ... (6)
d ₄ = 1.28d ₂ ... (7)
d ₅ = 1.44d ₂ ... (8)
By setting so as to satisfy the relational expression of, even if the stranded conductor 21 is formed without compression, the distance L1 from the center point A of the stranded conductor 21 to the outermost edge B of the first thick diameter wire 5 The distance L2 from the center point A to the outermost edge C of the 2 thick diameter wire 6 is substantially the same, and each wire can be brought into mutual contact with substantially all adjacent wires.

Since the configurations other than the above are the same as those in the first embodiment, the same reference numerals as those in the first embodiment will be added and the description thereof will be omitted.

Also in the second embodiment, the same actions and effects as those in the first embodiment are exhibited.

1,21 Twisted conductor 2 Inner layer wire 3 Thin diameter wire 4 Medium diameter wire 5 1st thick diameter wire 6 2nd thick diameter wire 12 Outer layer 13 Center line 14 1st inner layer 15 2nd inner layer 17 1st outer layer 18 2nd outer layer

Claims (4)

The outer layer is composed of the first outer layer and the second outer layer provided outside the first outer layer, and the inner layer is provided inside the outer layer.
The inner layer has a center line, a first inner layer formed by arranging six inner layer lines surrounding the center line, and twelve inner layer lines arranged outside the first inner layer. Consists of the formed second inner layer,
The second inner layer is formed into a hexagonal shape.
The first outer layer is composed of 6 small diameter wires and 12 medium diameter wires thicker than the small diameter wires.
The second outer layer is composed of 12 first thick diameter wires thicker than the medium diameter wire and 6 second thick diameter wires thicker than the first thick diameter wire.
The small diameter wire is arranged outside each hexagonal top of the second inner layer and on a line connecting the center of the center line and the inner layer line forming the top.
In the first outer layer, the small diameter wires are arranged apart from each other in the circumferential direction, and the two medium diameter wires are arranged in the circumferential direction between the small diameter wires arranged at the positions closest to each other in the circumferential direction. ,
In the second outer layer, the second thick diameter wires are arranged apart from each other in the circumferential direction, and the two first thick diameter wires are arranged between the second thick diameter wires arranged at the closest positions in the circumferential direction. Arrange in the circumferential direction,
The second thick diameter wire is arranged outside the valley portion composed of the two medium diameter wires arranged between the small diameter wires arranged at the closest positions in the circumferential direction.
The feature is that the small diameter wire is arranged inside the valley portion composed of the two first large diameter wires arranged between the second large diameter wires arranged at the closest positions in the circumferential direction. Stranded conductor. The inner layer line, the formed thicker than thin lines, wherein during the radial line is stranded conductor according to claim 1, characterized by forming thicker than the inner layer line. The inner layer line, the thin line is from thicker form, stranded conductor of claim 1, wherein the diameter of the in meridian and the inner wire, characterized in that formed in the same. The stranded conductor according to any one of claims 1 to 3 , wherein the strands forming the outermost layer in the radial direction are compressionally deformed from the outside.

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