KR20190120060A - Conductor, wire and cable - Google Patents

Abstract

Provided are a conductor (1), which may be easily wired in small space to be easily bent, a wire, and a cable. The conductor (1) consists of parent twisted lines made by twisting a plurality of child twisted lines (3) made by twisting a plurality of wires (2). The number of child twisted lines (3) constituting the parent twisted lines is more than the number of wires (2) constituting the child twisted lines (3). In addition, twisted directions of the child twisted lines (3) and parent twisted lines are the same directions.

Description

Conductors, Wires & Cables {CONDUCTOR, WIRE AND CABLE}

The present invention relates to conductors, wires, and cables.

BACKGROUND ART As a main electric power transmission wire used in a distribution board for a building or a factory facility, IV (vinyl insulated wire for indoor wiring), MLFC (flame retardant insulated wire, registered trademark) and the like of about 14 to 80 SQ are conventionally used.

As the electric wire used for the switchboard, in order to perform wiring in a limited small space, it is bent inside a switchboard with a small bending radius (for example, 4 times or less of the cable magnetic diameter), or wound spirally with a small bending radius. It may be wired in a state.

Moreover, there exists patent document 1 as prior art document information concerning this invention.

Japanese Patent Laid-Open No. 2010-129405

In recent years, along with an increase in the amount of power supplied to buildings and an increase in the amount of power supplied by improving the function of a factory facility, wires used for wiring in switchboards are required to have a larger allowable electric power (which can cause a large current to flow). It is becoming. However, since such wires (for example, wires of 100 SQ or more) are thick and hard, it is difficult to bend them with a small bending radius to form a small space wiring, which may cause a large burden on the wiring work.

Then, an object of this invention is to provide the conductor, electric wire, and cable which are easy to bend and can be wired easily even in a small space.

MEANS TO SOLVE THE PROBLEM This invention is a conductor which consists of the parent twisted line which twisted together the several twisted wire | wire twisted together for the purpose of solving the said subject, and combined the said twisted wire. The number of the twisted pairs which is the number of the said twisted pairs which constitutes is more than the number of twisted pairs which are the number of the said strands which comprise the said twisted pair, and the conductor whose twist direction of the said twisted pair and the said twisted pair is the same direction. to provide.

Moreover, this invention provides the electric wire provided with the said conductor and the insulator provided in the outer periphery of the said conductor in order to solve the said subject.

Moreover, this invention provides the cable provided with the cable core which has one or more said conductors, and the jacket provided in the outer periphery of the said cable core for the purpose of solving the said subject.

According to the present invention, it is possible to provide a conductor, an electric wire and a cable which can be easily bent and be easily wired even in a small space.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows typically the cross section perpendicular | vertical to the longitudinal direction of the electric wire using the conductor which concerns on one Embodiment of this invention.
FIG. 2 is a diagram showing an example of a cable using a conductor according to one embodiment of the present invention, and is a diagram schematically showing a cross section perpendicular to the longitudinal direction.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described according to an accompanying drawing.

FIG. 1: is a figure which shows typically the cross section perpendicular | vertical to the longitudinal direction of the electric wire using the conductor which concerns on this embodiment. As shown in FIG. 1, the electric wire 10 is provided with the conductor 1 and the insulator 4 provided in the outer periphery of the conductor 1. The electric wire 10 is used as an electric wire for electric power transmission (electric wire for switchboard) used for the switchboard for factory facilities, for example.

As the insulator 4, one containing an insulating resin having heat resistance and flame resistance according to the application may be used. For example, one containing a flame-resistant XLPE (cross-linked polyethylene), a heat-resistant PVC (Polyvinyl Chloride), or the like can be used. have.

When crosslinking the insulator 4, the crosslinking method includes, for example, a method of crosslinking by extrusion at high temperature after extrusion coating the insulator 4, electron beam crosslinking to irradiate an electron beam, or silane crosslinking. However, in the method of crosslinking by high temperature and high pressure after extrusion coating the insulator 4, the conductor 1 and the insulator 4 tend to be in close contact with each other, resulting in poor flexibility. In addition, when lubricating oil (fluid paraffin etc.) is apply | coated around the element wire 2 as mentioned later, it may vaporize and a bubble may generate | occur | produce between the element wires 2, and insulation characteristics may deteriorate. Therefore, when crosslinking the insulator 4, electron beam crosslinking or silane crosslinking is preferable.

The conductor 1 which concerns on this embodiment consists of the parent twisted line which twisted the several twisted wire | line 2 together and joined together, and twisted together several more. Hereinafter, the number of magnetic twist lines 3 constituting the parent twist line (that is, the conductor 1) is referred to as the number of twist twists, and the number of strands 2 constituting the magnetic twist line 3 is the number of magnetic twists. It is called.

In the conductor 1 according to the present embodiment, the number of twisted strands is equal to or greater than the number of twisted pairs, and the twisting directions of the twisted pairs 3 and the twisted pairs (the conductors 1) are the same. . This is because, if the number of twists is larger than the number of twists, the outer diameter of the twistscrew 3 becomes large (thick), and a large gap is easily formed between the strands 2 when the twists are twisted. In addition, even when the twisting direction of the magnetic twist line 3 and the parent twist line (conductor 1) is in the reverse direction, a large gap is easily formed between the element wires 2 when the parent twist is performed.

In addition, the twist direction of the magnetic twist line 3 means that when the magnetic twist line 3 is seen from one end side, the element wire 2 rotates from the other end side to the one end side in the circumferential direction of the magnetic twist line 3. Say the direction you are doing. In addition, the twisting direction of the parent twisted line (conductor 1) means that when the conductor 1 is viewed from one end side, the magnetic twisted line 3 extends from the other end side to the one end side in the circumferential direction of the conductor 1. Say the direction of rotation. In FIG. 1, the twisting direction of the magnetic twist line 3 is shown by the arrow A, and the twisting direction of the parent twist line (conductor 1) is shown by the arrow B. In FIG.

That is, by making the number of twists of the parent twist more than the number of twists and making the twist direction of the magnetic twist line 3 and the parent twist line (conductor 1) in the same direction, an unnecessary gap is generated between the element wires 2. It becomes difficult to do so, and it becomes possible to arrange | position the wire | line 2 together more closely. As a result, the number of twisted pairs is smaller than the number of twisted pairs, and the number of strands 2 is the same as compared with the case where the twisting direction of the twisted pair 3 and the twisted pair (conductor 1) is reversed. Even if it grants, the outer diameter of the conductor 1 can be made small and the outer diameter of the electric wire 10 can be made small, and it becomes possible to implement the electric wire 10 which is easy to bend (high flexibility).

In addition, since the gap between the wires 2 is less likely to occur and the wires 2 are arranged in close contact with each other, the contact resistance (electric resistance) between the wires 2 is reduced, so that the conductor resistance of the wire 10 is reduced. It is possible to lower the value. As a result, even when the number of element wires 2 constituting the conductor 1 is reduced than in the conventional example, the conductor resistance value equivalent to the conventional example can be realized. By reducing the number of element wires 2 constituting the conductor 1, the outer diameter of the conductor 1 can be further reduced, and it becomes possible to realize the electric wire 10 which is easier to bend. Moreover, since the quantity of copper used can be reduced by reducing the number of the element wires 2 which comprise the conductor 1, cost reduction can be attained and the electric wire 10 can also be reduced in weight.

In addition, by increasing the number of close twists, the amount of the insulator 4 that enters the gap around the conductor 1 is reduced, and the adhesion between the insulator 4 and the conductor 1 is weakened. As a result, the resistance at the time of bending the electric wire 10 becomes small, and it becomes easy to bend the electric wire 10 more.

In addition, in FIG. 1, in order to make the structure of the electric wire 10 easy to understand, it has shown so that the magnetic twist lines 3 may not overlap, and although it appears as if there exists a big gap between the element wires 2, actually The other magnetic twist line 3 enters into the gap between the magnetic twist lines 3, and there is almost no gap between the element wires 2. That is, if the electric wire 10 which concerns on this embodiment is cut | disconnected perpendicularly to the longitudinal direction, in the cross section, the inside of the insulator 4 will be in the state in which the element wire 2 was completely filled with no gap.

As the element wire 2, a TPC (tough-pitch copper) or a link wire having a low strength can be used. It is easier to bend the electric wire 10 because the element wire 2 tends to be longer to use a linkage wire having a lower strength than the TPC. In the present embodiment, as the element wire 2, one containing tin-plated HiFC (high-performance copper, registered trademark) is used, but the plating may be another metal plating (for example, silver plating). In addition, HiFC is a lean copper alloy described in Japanese Patent Laid-Open No. 2010-265511, and 4 to 5 masses of 2-12 mass ppm of sulfur, 3-30 mass ppm of oxygen, and Ti to pure silver containing unavoidable impurities. 55mass ppm will contain.

In the present embodiment, as the element wire 2, one having a lubricant coated thereon was used. As the lubricating oil, liquid paraffin can be used. As a result, the wires 2 are easily slipped with each other even when the wires 2 are in close contact with each other, so that the resistance at the time of bending the wire 10 becomes small, and the wire 10 can be more easily bent.

It is preferable that the twist pitch of the parent twist line (conductor 1) is larger than the twist pitch of the magnetic twist line 3. When the twist pitch of the magnetic twist line 3 and the parent twist line (conductor 1) is equal to or less than this, the gap between the element wires 2 after twisting and joining is large, so that the outer diameter of the conductor 1 is increased. This is because the effect of making it small becomes small. In addition, if the twist pitch of the magnetic twist line 3 and the parent twist line (conductor 1) is equal to or less than that, when the insulator 4 is removed, the element wire 2 is loosened, Terminal processing may become difficult. Since the twisted pitch of the parent twisted wire (conductor 1) is made larger than the twisted pitch of the magnetic twisted wire 3, the conductor 1 can be kept in a somewhat combined state when the insulator 4 is removed. Machining becomes easy.

In addition, in order to bring together the magnetic twist line 3, it is necessary to make the twist pitch of the magnetic twist line 3 as small as possible, so that the twist pitch of the parent twist line (conductor 1) is reduced to the magnetic twist line. When it is made smaller than the twist pitch of (3), there exists a possibility that a problem, such as disconnection of the element wire 2, may arise because the load is applied to the magnetic twist line 3. Therefore, also from this viewpoint, it is preferable that the twist pitch of the parent twist line (conductor 1) is larger than the twist pitch of the magnetic twist line 3.

More specifically, it is preferable that the twist pitch of the parent twist line (conductor 1) be 2 to 5 times the twist pitch of the child twist line 3. In addition, it is preferable that the twist pitch of the magnetic twist line 3 be 20 to 50 times the outer diameter of the magnetic twist line 3.

In addition, the twist pitch of the magnetic twist line 3 is the space | interval along the longitudinal direction of the magnetic twist line 3 of the point where arbitrary element wires 2 become the same position in the circumferential direction of the magnetic twist line 3. . In this embodiment, the twist pitches of all the magnetic twist lines 3 are the same. In addition, the twist pitch of the parent twisted line (conductor 1) is the space | interval along the longitudinal direction of the conductor 1 of the point which arbitrary magnetic twisted lines 3 become the same position in the circumferential direction of the conductor 1 to be.

Here, in order to examine the effect of this embodiment, the electric wire 10 of Example 1-1 and Example 1-2 of 100SQ, and the electric wire of the prior art example 1 were produced. The outer diameter (wire | wire diameter) of the element wire 2 used by Example 1-1, Example 1-2, and the prior art example 1 was 0.45 mm, and the thickness of the insulator 4 was 2 mm. In addition, in Example 1-1, Example 1-2, and the prior art example, the twist pitch of the twisted wire | wire (conductor 1) was 260 mm, and the twist pitch of the magnetic twist wire 3 was 75 mm. The conductor resistance of the wire of 100SQ, which is specified according to the JIS standard, is 0.193 Ω / km or less. In Examples 1-1 and 1-2, the number of twisted twists and the number of twisted twists were selected to satisfy this condition. .

In Conventional Example 1, which is a wire of 100SQ, which has been generally used in the past, the number of twisted strands is 19, the number of twisted strands is 34, and the twisting directions of the twisted pairs 3 and the twisted pairs (the conductors 1) are reversed. It was. In this case, the number of element wires 2 used was 646, and the outer diameter of the electric wire was about 18.5 mm. The conductor resistance value of the produced electric wire of Example 1 was 0.176 Ω / km.

On the other hand, in the electric wire 10 of Example 1-1, the number of twisted strands is set to 25, and the number of twisted strands is set to 24, and the twisting direction of the twisted line 3 and the twisted line (conductor 1) is adjusted. It was set in the same direction. In this case, the number of element wires 2 used was 600 pieces, and the outer diameter of the electric wire 10 was about 17.2 mm. It was confirmed that the conductor resistance value of the electric wire 10 of Example 1-1 produced was 0.186 Ω / km, and the above standard was satisfied.

In addition, in the electric wire 10 of Example 1-2, the number of twisted strands is 27, and the number of twisted strands is 22, and the twisting direction of the twisted line 3 and the twisted line (conductor 1) is the same. Direction. In this case, the number of the element wires 2 used was 594 pieces, and the outer diameter of the electric wire 10 was about 17.0 mm. It was confirmed that the conductor resistance value of the electric wire 10 of Example 1-2 produced was satisfying the above standard.

As described above, in Examples 1-1 and 1-2 according to the present embodiment, the outer diameter of the wire 10 is reduced by about 9% to 10% in comparison with the conventional example 1 while satisfying the conductor resistance value of the standard. It can be seen that the electric wire 10 which can be cured, which is easy to bend, and which is easy to wire work can be realized. In addition, in Example 1-1 according to the present embodiment, it is possible to reduce the number of element wires 2 to 46 (about 7.12%) in comparison with the conventional example 1, and in Example 1-2, the conventional example 1 Compared with that, the number of element wires 2 can be reduced to 52 (approximately 8.05%), and it can be seen that the wire 10 contributes to further thinning, flexibility improvement, weight reduction and cost reduction. The number of twisted twists and twists is not limited to Examples 1-1 and 1-2, but may be 30 twists and 20 twists.

Similarly, Example 2, Conventional Example 2, and 150SQ, Example 3 and Conventional Example 3, which were set to 125SQ, were also examined. In Examples 2 and 3, in the same manner as in Examples 1-1 and 1-2, the number of twisted twists is equal to or greater than the number of twisted twists, and the twisting direction of the twisted twist line 3 and the twisted twist line (conductor 1) is the same. In the same direction, the number of twisted pairs and the number of twisted pairs satisfying the conductor resistance values specified by the JIS standard were selected. Conventional examples 2 and 3 are wires of 125SQ and 150SQ which have been generally used in the past, and as in the conventional example 1, the number of twists is smaller than the number of twists, and the twisted lines 3 and the twisted lines (conductors 1 The twist direction of)) is reversed. The results are summarized in Table 1.

As shown in Table 1, in Examples 2 and 3 according to the present embodiment, the number of element wires 2 is 7% or more as compared with the conventional examples 2 and 3 while satisfying the conductor resistance values specified by the JIS standard. It is possible to reduce. That is, according to this embodiment, it turns out that even in case of 100SQ, 125SQ, and 150SQ, narrowing of the wire 10, flexibility improvement, weight reduction, and cost reduction are attained.

Here, although the electric wire 10 which coat | covered the insulator 4 on the outer periphery of the conductor 1 was demonstrated, the conductor 1 is applicable to the cable of various forms. As shown in FIG. 2, the cable 20 which concerns on this embodiment has the cable core 21 which has one or more conductors 1, and the jacket 22 provided in the outer periphery of the cable core 21. As shown in FIG. . In FIG. 2, as an example, although the cable 20 is a coaxial cable which has the cable core 21 which provided the insulator 21a and the outer conductor 21b one by one in the outer periphery of the conductor 1, the cable ( About the specific structure of 20), it is not limited to this. For example, the cable core 21 may be comprised by bundle | bundling a plurality of electric wires 10 of FIG. 1, or arranged in parallel, and the jacket 22 may be provided so that this periphery may be covered collectively.

(Operation and Effects of Embodiments)

As described above, in the conductor 1 according to the present embodiment, the number of twisted twists is equal to or greater than the number of twisted twists, and the twisting directions of the twisted twist line 3 and the twisted twist line (the conductor 1) are the same. Direction.

As a result, unnecessary gaps between the element wires 2 can be reduced, and the element wires 2 can be arranged in closer contact with each other, thereby contributing to the narrowing of the electric wire 10, the flexibility improvement, and the reduction of the conductor resistance value. . In addition, since the conductor resistance value is reduced, even if the number of element wires 2 is further reduced, the specification can be satisfied, contributing to further thinning, flexibility improvement, weight reduction and low cost of the electric wire 10. In addition, by increasing the number of twists and bringing the wires 2 into close contact with each other, it is difficult for the insulator 4 to enter the conductor 1, and the conductor 1 is easily slipped with respect to the insulator 4. It becomes possible to improve more. That is, according to this embodiment, the wire 10 which can be easily wired and can be wired easily even in a small space etc. in a switchboard can be realized. Moreover, the effect by this embodiment is especially remarkable in the electric wire 10 of 100 SQ or more in which the number of the element wires 2 increases.

(Synthesis of embodiment)

Next, about the technical idea grasped | ascertained from embodiment demonstrated above, the code | symbol etc. in embodiment are used, and it describes. However, each code | symbol etc. in the following description do not limit the component in a claim to the member etc. which specifically showed to embodiment.

[1] A twisted twisted pair (3) twisted together to form a plurality of twisted pairs (2) is formed of a twisted twisted twisted pair, which is the number of the twisted twisted pairs (3) constituting the twisted twisted pair The number of twists of the parent twist is more than the number of twists of the child which is the number of the element wires 2 constituting the magnetic twist line 3, and the twist direction of the magnetic twist line 3 and the parent twist line is the same direction. Conductor (1).

[2] The conductor (1) according to [1], in which the element wire (2) consists of an interlocking wire.

[3] The conductor (1) according to [1] or [2], in which lubricating oil is applied around the element wire (2).

[4] The conductor (1) according to any one of [1] to [3], wherein the twist pitch of the parent twist line is larger than the twist pitch of the magnetic twist line 3.

[5] An electric wire (10) comprising the conductor (1) according to any one of [1] to [4] and an insulator (4) provided on an outer circumference of the conductor (1).

[6] A cable 20 provided with a cable core 21 having one or more conductors according to any one of [1] to [4], and a jacket 22 provided on an outer periphery of the cable core 21. ).

As mentioned above, although embodiment of this invention was described, embodiment mentioned above does not limit invention regarding a claim. It should be noted that not all combinations of the features described in the embodiments are necessary as a means for solving the problems of the invention.

The present invention can be modified as appropriate without departing from the spirit thereof.

1: conductor (twine)
2: wire
3: purple twister
4: insulator
10: wires

Claims (6)

A conductor consisting of a twisted pair of twisted pairs of twisted wires joined together and a plurality of twisted wires joined together,
The number of twisted pairs that is the number of the twisted pairs constituting the parent twisted line is equal to or greater than the number of twisted pairs that is the number of the strands that constitute the twisted pair.
In addition, the twist direction of the magnetic twist line and the parent twist line is the same direction,
Conductor. The method of claim 1,
The element wire is made of a link line,
Conductor. The method according to claim 1 or 2,
Lubricating oil is applied around the element wire,
Conductor. The method according to any one of claims 1 to 3,
The twist pitch of the parent twist line is larger than the twist pitch of the ruler twist line,
Conductor. The conductor according to any one of claims 1 to 4,
With an insulator provided on the outer periphery of the conductor,
wire. A cable core having at least one conductor according to any one of claims 1 to 4,
With a jacket provided on the outer periphery of the cable core,
cable.

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