KR20230138892A - Flat cable and flat cable with terminal - Google Patents

Abstract

(Task) Provide flat wires and flat wires with terminals that are easy to bend and wire.
(Solution) The balanced electric wire 2 includes a strip-shaped conductor 21 and an insulator 22 covering the periphery of the conductor 21, and the conductor 21 is made of aluminum or an aluminum alloy. A strip-shaped first conductor (21a) composed of one wire knitted together, and a second wire formed to insert the first conductor (21a) at least in the thickness direction of the conductor 21 and made of copper or a copper alloy. A second conductor (2lb) is provided by knitting together.

Description

Flat cable and flat cable with terminal{FLAT CABLE AND FLAT CABLE WITH TERMINAL}

The present invention relates to flat electric wires and flat electric wires with terminals.

In facilities such as factories or vehicles such as electric vehicles or hybrid vehicles, a bus bar is a wiring member that is wired between devices such as a control panel, and is conventionally molded according to the shape of the wiring portion. has been used (for example, see Patent Documents 1 and 2).

Japanese Patent Publication No. 2019-87471 Japanese Patent Publication No. 2020-177878

Recently, toward the realization of a carbon neutral society, for example, energy saving equipment is being updated in facilities where industrial robots are used. As these facilities are updated, wiring materials wired between devices such as control panels also need to be updated. However, in order to manufacture a mothership according to the updated equipment, a mold for molding according to the shape of the mothership is required. Therefore, a wide variety of molds are required to correspond to the various wiring shapes according to the updated equipment, and the production volume of motherships of the same shape tends to be low. In this way, since the busbar has little versatility and tends to be of various types in small quantities, there is a problem in that the production cost increases when the busbar is used as a wiring material between devices.

Therefore, the present inventors considered using a flat wire whose conductor is a braided conductor as a wiring material between devices that is more versatile than a bus bar. However, especially when wiring in narrow spaces between devices, conventional flat wires are difficult to bend, so there are cases where the flat wires become tortuous and interfere with surrounding devices.

Therefore, the purpose of the present invention is to provide a flat electric wire and a flat electric wire with terminals that are easy to bend and easy to wire.

The present invention aims to solve the above problems, and includes a strip-shaped conductor and an insulator covering the periphery of the conductor, wherein the conductor is made of aluminum or an aluminum alloy. a strip-shaped first conductor formed by knitting together first wires, formed to insert the first conductor at least in the thickness direction of the conductor, and made of copper or a copper alloy; A balanced electric wire including a second conductor formed by knitting second wires together is provided.

In addition, the present invention, for the purpose of solving the above problems, is a terminal-attached balanced electric wire having a balanced electric wire and a terminal installed at at least one end of the balanced electric wire, wherein the balanced electric wire is , a strip-shaped conductor and an insulator covering the periphery of the conductor, wherein the conductor includes a strip-shaped first conductor formed by knitting together first wires made of aluminum or an aluminum alloy, and at least one of the conductors. A balanced electric wire with a terminal is provided, which is formed to insert the first conductor in the thickness direction and includes a second conductor formed by knitting second wires made of copper or a copper alloy.

According to the present invention, it is possible to provide a flat electric wire and a flat electric wire with terminals that are easy to bend and easy to wire.

[Figure 1] A diagram showing a terminal-attached flat wire using a flat wire according to one embodiment of the present invention, (a) is a perspective view, (b) is an enlarged view of the end of (a), and (c) is (a). ) is a cross-sectional view along line AA.
[Figure 2] (a) is a schematic diagram showing a wiring example of the terminal-attached flat wire of FIG. 1, and (b) is a schematic diagram showing a wiring example of a conventional terminal-attached flat wire.
[Figure 3] A perspective view showing a modified example of the terminal part.
[Figure 4] (a) and (b) are cross-sectional views showing a modified example of the balanced electric wire 2.
[Figure 5] A cross-sectional view showing a cross-section perpendicular to the longitudinal direction of a balanced electric wire according to another embodiment of the present invention.
[FIG. 6] (a) and (b) are diagrams showing an example of the connection structure of the first balanced wire and the second balanced wire.
[Figure 7] A diagram showing an example of the connection structure of the first balanced wire and the second balanced wire.
[Figure 8] (a) is a cross-sectional view showing a modified example of a balanced electric wire, and (b) is a perspective view showing a modified example of a balanced electric wire with a terminal.

[Embodiment]

In the following, embodiments of the present invention will be described according to the attached drawings.

Figure 1 is a diagram showing a terminal-attached flat wire (1) using the flat wire (2) according to this embodiment, where (a) is a perspective view, (b) is an enlarged view of the end of (a), and (c) is ( This is a cross-sectional view along line A-A in a).

As shown in Figures 1 (a) to 1 (c), the flat electric wire 1 with terminals includes a flat electric wire 2, a terminal 3 provided at at least one end of the flat electric wire 2, and a heat shrinkable wire. It is provided with a tube (4).

(Balanced Front (2))

The balanced electric wire 2 according to the present embodiment includes a strip-shaped conductor 21 and an insulator 22 covering the periphery of the conductor 21.

The conductor 21 is a strip-shaped first conductor (21a) composed of first wires made of aluminum or aluminum alloy knitted together, and a second conductor (2lb) composed of a second wire made of copper or copper alloy knitted together. ) is provided.

The first conductor 21a is formed by pressing and flattening an annular braided conductor. For example, when manufacturing a coaxial wire, a braided conductor is installed around a core covered with an insulator around the conductor, but in this embodiment, a circular braided conductor is installed without passing through the core. The first conductor 21a is formed by forming the braided conductor and then flattening it with a press or the like. The first conductor 21a is disposed at the center of the cable.

Examples of the aluminum alloy used as the first wire include Al-Zr alloy, Al-Ni-Zr alloy, Al-Co-Zr alloy, and Al-Fe-Zr alloy. Additionally, the first wire may contain impurities that are unavoidable during manufacturing. Additionally, the first element wire may be composed of a plated wire in which Zn (for example, Zn with an amorphous structure), Ni, Sn, or the like is plated on the surface of an element wire made of aluminum or an aluminum alloy. The tensile strength and breaking elongation of the first strand are smaller than those of the second strand, which will be described later. For example, the first wire has a tensile strength of 200 MPa or less and an elongation at break of 5% to 17%. In addition, the tensile strength and elongation at break of the first and second wires are the tensile strength and elongation obtained by performing a tensile test on the test piece according to the test method specified in JIS C 3002 (1992). .

Here, the first wire made of aluminum with an outer diameter of 0.16 mm was used. The outer diameter of the first strand is larger than the outer diameter of the second strand. More specifically, the outer diameter of the first strand should be 1.3 times or more than the outer diameter of the second strand, and it is desirable to adjust the outer diameter so that the resistance values of the first strand and the second strand are approximately equal. Accordingly, for example, the resistance of the first conductor 21a disposed at the center of the cable is large, which causes heat generation to increase, thereby suppressing a defect in which heat is stored inside the cable. The outer diameter of the first wire is, for example, 0.10 mm or more and 0.50 mm or less. In addition, when plating is applied to the surface of the first wire, the outer diameter of the first wire becomes the outer diameter of the wire made of aluminum or aluminum alloy in a state in which plating is applied around the wire (i.e., plated wire).

By configuring a part of the conductor 21 with the first conductor 21a made of aluminum or aluminum alloy with a low elastic modulus, the balanced electric wire 2 can be easily bent, and the flat electric wire 2 can be easily bent. Since it is easy to maintain the bent shape when bent, wiring work becomes easier when wiring in narrow places between devices. In addition, by configuring a part of the conductor 21 with the first conductor 21a made of aluminum or an aluminum alloy, the balanced wire 2 is lightweight compared to the case where the entire conductor 21 is composed of copper or a copper alloy. It can be done, and costs can be reduced.

The second conductor 2lb is formed to insert the first conductor 21a at least in the thickness direction of the conductor 21. In this embodiment, the second conductor 2lb is formed in a cylindrical shape so as to cover the entire circumference of the first conductor 21a. The second conductor 2lb is formed by using the first conductor 21a as a core material and braiding a second wire in an annular manner to cover the surrounding area. The second conductor 2lb is disposed in contact with the first conductor 21a.

The second element wire may be composed of a plated wire in which Zn (for example, Zn with an amorphous structure), Ni, Sn, or the like is plated on the surface of an element wire made of copper or a copper alloy. The tensile strength and breaking elongation of the second wire are greater than those of the first wire. For example, the second wire has a tensile strength of 200 MPa or more and an elongation at break of 10% or more. In order to make it easier to bend the balanced wire 2, it is desirable to use a second wire as thin as possible. The outer diameter of the second wire may be, for example, 0.10 mm or more and 0.20 mm or less. Here, a second wire made of Sn-plated annealed copper wire with an outer diameter of 0.12 mm, which is smaller than the first wire, was used. In addition, when plating is applied to the surface of the second wire, the outer diameter of the second wire becomes the outer diameter of the wire made of copper or copper alloy in a state in which plating is applied around the wire (i.e., plated wire).

The first conductor 21a made of aluminum or aluminum alloy is weak to friction, and is prone to breakage due to friction with a part of the device, for example, when forming the insulator 22. Therefore, in this embodiment, the second conductor 2lb made of copper or copper alloy, which is resistant to friction, is installed to cover the circumference of the first conductor 21a, so that the first conductor 21a is formed by the second conductor 2lb. ) is protected to prevent disconnection from occurring in the first conductor (21a). In addition, by installing the second conductor 2lb to cover the circumference of the first conductor 21a, the outermost layer is made of copper or a copper alloy, so the connector conventionally used to connect a conductor made of copper or a copper alloy It is possible to use the connector or terminal 3 as is, and a fastening method, for example, tightening, can also be used. In addition, by configuring a part of the conductor 21 with a second conductor (2lb) made of copper or a copper alloy, the conductivity and heat resistance of the conductor 21 can be improved, and the tensile strength, etc. The mechanical strength can also be improved.

In addition, the case where the first conductor (21a) and the second conductor (2lb) are braided conductors has been described here, but the first conductor (21a) and the second conductor (2lb) are made by weaving a plurality of metal wires using a weaving machine, etc. It is also okay if it is made into a strip shape. That is, in this specification, the expression “constructed by knitting together metal wires” also includes weaving the metal wires.

The insulator 22 is for protecting the conductor 21, and is, for example, a resin composition containing at least one resin selected from polyvinyl chloride resin, polyolefin resin, fluororesin, polyurethane resin, etc. as the main component. It is made up of 組成物. The thickness of the insulator 22 may be 0.8 mm or more and 2.0 mm or less. By setting the thickness of the insulator 22 to 0.8 mm or more, the mechanical strength of the insulator 22 can be secured, and by setting the thickness of the insulator 22 to 2.0 mm or less, the balanced wire 2 can be easily bent.

The insulator 22 is covered around the conductor 21 by insertion and extrusion. Accordingly, when the balanced wire 2 is bent, the surface of the conductor 21 and the inner surface of the insulator 22 can be brought into close contact to the extent that the conductor 21 can move within the insulator 22. It becomes easier to bend the wire (2).

In this embodiment, the ratio (W/H) between the thickness (H) and the width (W) of the balanced electric wire 2 is set to 4 or more. Accordingly, since the balanced electric wire 2 has a flatter shape, it becomes easier to bend the balanced electric wire 2. Here, the thickness (H) of the balanced wire 2 was set to 6.1 mm, the width (W) was set to 30 mm, and their ratio (W/H) was set to about 4.9. In addition, in the conductor 21, the ratio (Wd/Hd) between the thickness (maximum thickness) (Hd) and the width (maximum width) (Wd) is preferably 4 times or more.

(Terminal (3))

The terminal 3 is installed at at least one end of the balanced electric wire 2. Figure 1(a) shows a case where terminals 3 are installed at both ends of the balanced electric wire 2. The terminal 3 includes a fixing part (hereinafter referred to as a tightening part) 31 fixed to the end of the conductor 21 exposed from the end of the insulator 22 by a fastening method such as tightening, and a device such as a control panel ( 11) is a crimp terminal that is integrally provided with a flat connecting portion 32 for fixing it with a bolt or the like to a connected member such as the electrode 11a (see Fig. 2(a)). Additionally, the terminal 3 may be fixed to the conductor 21 by a method other than tightening.

The tightening portion 31 is formed in a cylindrical shape and is fixed to the conductor 21 by tightening it while the conductor 21 is inserted therein. The connecting portion 32 extends from the tightening portion 31 outward in the longitudinal direction of the flat electric wire 2. The connection portion 32 is formed in a flat shape, and a through hole 32a for passing a bolt is formed in its central portion.

In the terminal-equipped flat wire (1) according to this embodiment, the terminal (3) is installed so that the normal direction of the connecting portion (32) intersects the thickness direction of the flat wire (2). More specifically, the terminal 3 is installed so that the normal direction of the connecting portion 32 is perpendicular to the thickness direction of the balanced electric wire 2 (parallel to the width direction).

Accordingly, as shown in Figure 2(a), the balanced wire 2 can be bent in the thickness direction for wiring, and can be easily wired even in a narrow space between devices 11 such as a control panel. do. Additionally, the angle at which the normal direction of the connecting portion 32 is directed to the thickness direction of the balanced wire 2 can be appropriately adjusted in accordance with the shape and direction of the electrode 11a installed in the device 11. In contrast, for example, in the case of the conventional terminal-attached flat wire 1 in which the terminal 3 is installed so that the normal direction of the connecting portion 32 is parallel to the thickness direction of the flat wire 2, Figure 2 (b) As shown, the balanced wire (2) must be wired in a twisted manner. Therefore, the balanced electric wire 2 is likely to be bent and interfere with (contact) the device 11, raising the risk that the balanced electric wire 2 may be damaged. According to this embodiment, such defects can be suppressed and wiring can be easily performed even in the narrow space between devices 11.

That is, the angle between the normal direction of the connection part 32 and the thickness direction of the balanced wire 2 (= the angle formed by the normal direction of the connection part 32 and the thickness direction of the balanced wire 2) is the angle between the normal direction of the connection part 32 and the thickness direction of the balanced wire 2. If the case where the normal direction and the thickness direction of the balanced wire (2) are perpendicular to each other is set to 90 degrees, and the case where the normal direction of the connection part 32 and the thickness direction of the balanced wire (2) are parallel is set to 0 degrees, the terminal (3) The direction of the connection portion 32 can be adjusted so that the angle is greater than 0 degrees and less than 90 degrees. Accordingly, as shown in Fig. 2(a), the terminal-attached flat wire 1 is less likely to be twisted or twisted during wiring, and the shape and direction of the electrode 11a installed in the device 11 can be changed. Wiring according to the above becomes possible.

In addition, herein, the case where the terminal 3 is installed so that the normal direction of the connecting portion 32 intersects the thickness direction of the balanced wire 2 has been described, but this is not limited to this, as shown in Figure 3. , the normal direction of the connecting portion 32 may be parallel to the thickness direction of the balanced electric wire 2. The direction of the connection portion 32 can be appropriately selected by adjusting the direction of the normal direction of the connection portion 32 within the range of the angle formed by the width direction and the thickness direction, corresponding to the arrangement of the electrode 11a to be connected, etc. there is.

(Shape of the ends of heat shrink tube (4) and flat wire (2))

The heat shrink tube 4 as a covering member is installed at the end of the flat wire 2, extending from the insulator 22 to the clamping portion 31 of the terminal 3, and covering the entire circumference thereof. More specifically, the heat shrinkable tube 4 includes the conductor 21 exposed between the insulator 22 and the terminal 3, at least a portion of the fastening portion 31 of the terminal 3, and the tip of the insulator 22. It is installed to cover the entire front section. The heat shrink tube 4 serves to cover and insulate the exposed conductor 21 and to prevent moisture, dust, etc. from entering the balanced electric wire 2.

In this embodiment, the conductor 21 exposed from the insulator 22 of the balanced electric wire 2 is tightened and fixed with the tightening part 31, and the width (Wd) of the conductor 21 in the balanced electric wire 2 is fixed. ), the width of the conductor 21 in the tightening portion 31 is smaller than that of ). And, the heat shrinkable tube 4 is installed around the exposed conductor 21 so as to be in close contact with it as much as possible without any gap. Therefore, between the insulator 22 and the terminal 3, the external shape of the heat shrinkable tube 4 becomes a tapered shape whose width becomes smaller as it approaches the terminal 3. Hereinafter, as the conductor 21 exposed between the tip of the insulator 22 and the tip of the terminal 3, the portion of the conductor 21 to which the terminal 3 is not fixed is referred to as a non-crimped portion (or non-fixed portion). It is called (5). By configuring the outer shape of the heat shrinkable tube 4 covering the non-crimped portion 5 to be tapered, it becomes possible to bend the non-crimped portion 5 in the width direction of the flat electric wire 2, so that it can be bent at the time of wiring. It is possible to make it difficult for the balanced wire 2 to be twisted or twisted, making wiring work easier. In addition, by shrinking the heat shrinkable tube 4 sufficiently to adhere tightly around the exposed conductor 21, the heat shrinkable tube 4 may fall off from the surface of the insulator 22 when bent, etc. In (4), the occurrence of positional misalignment can be suppressed. Additionally, in this embodiment, the heat shrinkable tube 4 is not filled with adhesive.

In order to make it easier to bend the non-compressed portion 5 and to make wiring work easier, the length of the non-compressed portion 5 (i.e., the balanced wire (2) from the tip of the insulator 22 to the tip of the tightening portion 31 It is desirable to make the length (L) along the longitudinal direction of ) as long as possible. Additionally, if the length L of the non-crimped portion 5 is too short, when the conductor 21 is tightened, the balanced wire 2 is likely to bend into a bow shape when viewed in the longitudinal direction. As a result, when the heat-shrinkable tube 4 is installed, a gap is created between the heat-shrinkable tube 4 and the insulator 22, and moisture and dust easily enter through the gap, which may reduce connection reliability. Therefore, the length L of the non-crimped portion 5 should be at least the width W of the balanced electric wire 2.

(variation example)

Figures 4(a) and (b) are cross-sectional views showing one modification of the balanced electric wire 2. As shown in Figures 4 (a) and (b), the balanced electric wire 2 may further include a strip-shaped or line-shaped shape-maintaining member 23 provided around the conductor 21 for shape maintenance. .

Figure 4(a) shows a case where a linear shape retaining member 23a is used, and a pair of shape retaining members 23a are arranged to insert the conductor 21 in the width direction. As the linear shape maintaining member 23a, for example, annealed copper wire or aluminum wire can be used. Additionally, the number and arrangement positions of the shape maintaining members 23a used are not limited to those shown.

Figure 4(b) shows a case where a strip-shaped shape maintaining member 23b is used, and the shape maintaining member 23b is placed adjacent to the conductor 21 (adjacent to the second conductor 2lb) in the thickness direction. is placed. As the strip-shaped shape maintaining member 23b, for example, a copper plate can be used.

By providing the shape maintaining member 23, the flat wire 2 can be folded and bent into a desired shape to maintain its shape, and wiring according to the desired wiring arrangement becomes easier. In addition, in the illustrated example, the shape maintaining member 23 is installed between the conductor 21 and the insulator 22, so that the shape maintaining member 23 and the conductor 21 are in contact with each other, but the shape maintaining member 23 and the conductor 21 are not limited to this. (21) and the shape maintaining member (23) may be separated from each other. That is, the insulator 22 may exist between the conductor 21 and the shape maintaining member 23.

(Action and effect of embodiment)

As described above, in the balanced electric wire 2 according to this embodiment, the conductor 21 includes a strip-shaped first conductor 21a formed by knitting first wires made of aluminum or an aluminum alloy, and at least It is formed to insert the first conductor 21a in the thickness direction of the conductor 21, and is provided with a second conductor 2lb formed by knitting second wires made of copper or a copper alloy.

By providing the first conductor 21a in which the conductor 21 is made of aluminum or an aluminum alloy, the amount of expensive copper used is reduced, it is lightweight at low cost, and is easy to bend, maintaining the bent shape. A balanced electric wire (2) that is easy to maintain can be realized. In addition, by installing a second conductor (2lb) made of copper or copper alloy to insert the first conductor (21a) in the thickness direction, the first conductor (21a) can be protected by the second conductor (2lb). In addition, it is possible to easily connect to the connector or terminal 3 by tightening, for example, and the conductivity, heat resistance, and mechanical strength of the conductor 21 can be improved.

Since the conductor 21 includes the first conductor 21a made of aluminum or an aluminum alloy, it becomes easy to bend the balanced wire 2 in the thickness direction, so that the balanced wire 2 can be used even in narrow gaps between devices 11 such as control panels. 2) Wiring can be done without twisting or twisting, making wiring work easier. That is, according to this embodiment, a flat electric wire 2 that is easy to bend and easy to wire can be realized. In addition, compared to the conventional bus bar that has been used as a wiring material for power supply between devices 11, the terminal-equipped flat wire 1 can be wired in various wiring arrangements and is highly versatile. , low-cost wiring materials can be provided at the time of facility renewal, etc.

(Other Embodiments)

In the above embodiment, the case of arranging the second conductor 2lb so as to cover the entire circumference of the first conductor 21a has been described, but this is not limited to this, and as shown in Figure 5, 1 formed in a strip shape Using a pair of second conductors 2lb, the conductor 21 may be configured so that the first conductor 21a is inserted into the pair of second conductors 2lb in the thickness direction of the conductor 21. By configuring in this way, the thickness becomes larger compared to the case of Figure 1(c), but the width can be reduced. Depending on the shape of the wiring space, etc., it is possible to appropriately select whether the flat electric wire 2 has the structure of FIG. 1(c) or the structure of FIG. 5. Hereinafter, for distinction, the balanced wire 2 in FIG. 1(c) will be referred to as the first balanced wire 2a, and the balanced wire 2 in FIG. 5 will be referred to as the second balanced wire 2b.

Additionally, it may be used by connecting two or more balanced wires (2). In this case, it is naturally possible to connect the first balanced wire 2a and the second balanced wire 2b. For example, as shown in Figure 6(a), the terminal 3 installed at the end of the first balanced wire 2a and the terminal 3 installed at the end of the second balanced wire 2b are connected to a bolt or the like. By fixing them to each other, a connection structure may be formed in which both balanced wires 2a and 2b are connected. In addition, as shown in Figure 6 (b), a barrel-shaped fastener 6 is used, and the front ends of the conductors 21 of both balanced wires 2a and 2b are engaged or overlapped to form the fastener ( 6), the connection structure may be formed by connecting the two balanced wires 2a and 2b by tightening and fixing the two conductors 21. And, the insulator 22 of the second flat wire 2b is formed from the insulator 22 of the first flat wire 2a through the fastener 6 so as to cover the surroundings of the connection portion connected to the fastener 6. It is good if heat shrink tube (4) is installed in the range up to .

In addition, in order to make the connection between the two balanced wires 2a and 2b more robust, as shown in FIG. 7, only the first conductor 21a is cut to a predetermined length at the end of the second balanced wire 2b. By doing so, a space surrounded by the second conductor (2lb) is formed in the cut portion, and the conductor 21 of the first balanced wire 2a is inserted into the space, thereby connecting the conductor 21 to the second balanced wire. Insert the pair of second conductors (2lb) in (2b) in the thickness direction, and in a state where the second conductors (21) of both conductors (21) are in contact with each other, the overlapping portion of both conductors (21) is It may be used as a connection structure so that it is tightened and fixed. Although not shown in the drawing, a heat shrinkable tube 4 as shown in Fig. 6(b) may be provided to cover the area around the connection portion connected by tightening. In addition, contrary to Figure 7, by cutting the first conductor 21a of the first balanced wire 2a to a predetermined length, a space surrounded by the second conductor 2lb is formed in the cut portion, and the space is formed. A connection structure may be used in which the conductor 21 of the second balanced wire 2b is inserted and fastened.

In addition, in the connection structure shown in FIGS. 6 to 7, the balanced wire 2 (first balanced wire 2a) shown in FIG. 1(c) and the balanced wire 2 (second balanced wire) shown in FIG. 5 are connected. (2b)) has been described as a connection structure, but it is not limited to this, and a connection structure in which the balanced wires 2 (first balanced wire 2a) shown in Figure 1(c) are connected to each other, or A connection structure shown in 5 may be used in which the balanced wires 2 (second balanced wire 2b) are connected to each other.

Figure 8(a) is a cross-sectional view showing a modified example of the flat electric wire 2, and Figure 8(b) is a perspective view showing a modified example of the balanced electric wire 1 with a terminal. As shown in Fig. 8(a), the flat electric wire 2 may further include a linear insulating coated wire 24 in which an insulating coated portion 24b is provided around the conductor 24a. The insulating coated wire 24 is arranged in parallel with the conductor 21 inside the insulator 22 along the longitudinal direction of the conductor 21. The insulating coated wire 2 is arranged to be parallel to the conductor 21 in the width direction.

The conductive wire 24a is made of a metal wire made of, for example, copper or a copper alloy, aluminum or an aluminum alloy. For example, the insulating coating portion 24b, like the insulator 22, is made of a resin composition containing a resin such as polyvinyl chloride resin as a main component.

As shown in Fig. 8(b), the insulating coated wire 24 is arranged so as to protrude from the distal end of the heat shrinkable tube 4 at the end of the terminal-equipped flat wire 1. At this time, the insulating coating line 24 is arranged along the fixing part (fastening part) 31 of the terminal 3 and is covered with the heat shrinkable tube 4 together with the fastening part 31. A connection terminal 6 is connected to the tip of the insulating coated wire 24, and the insulating coated line 24 is connected to a control electrode or grounding electrode of the device 11 or a device other than the device 11 through the connection terminal 6. connected to etc.

The flat wire 2 is provided with an insulated coated wire 24, so that when the insulated coated wire 24 and the flat wire 2 are wired between the devices 11 shown in Fig. 2(a), the insulated coated wire 24 is provided. Compared to the case where (24) and the flat wire (2) are wired separately, the wiring space can be reduced, wiring workability is improved, and the freedom of wiring arrangement is also improved. In addition, in Figures 8(a) and 8(b), the case of providing one insulating coated line 24 has been explained, but the present invention is not limited to this, and a plurality of insulating coated lines 24 may be provided. For example, a pair of insulated coated wires 24 may be provided to insert the conductor 21 in the width direction. Additionally, it is not essential to separate the terminals 3 and 6, and a connector incorporating both terminals 3 and 6 may be installed at the end of the flat wire 2.

(Summary of embodiment)

Next, the technical ideas understood from the embodiments described above will be described using the symbols in the embodiments. However, in the following description, each symbol, etc. does not limit the components in the claims to members specifically shown in the embodiments.

[1] It is provided with a strip-shaped conductor 21 and an insulator 22 covering the periphery of the conductor 21, wherein the conductor 21 is knitted with first wires made of aluminum or aluminum alloy. A band-shaped first conductor (21a) and a second wire formed to insert the first conductor (21a) at least in the thickness direction of the conductor (21) and made of copper or a copper alloy are knitted together. A balanced electric wire (2) having a second conductor (2 lb).

[2] The second conductor (2lb) is formed in a cylindrical shape to cover the entire circumference of the first conductor (21a), and the balanced electric wire (2) described in [1].

[3] The conductor 21 includes a pair of second conductors 2lb formed in a strip shape, and the first conductor 21a is connected to a pair of second conductors 2lb in the thickness direction of the conductor 21. The balanced wire (2) described in [1] is constructed by inserting two conductors (2 lb).

[4] The balanced electric wire (2) described in any one of [1] to [3], wherein the ratio (W/H) of thickness (H) to width (W) is 4 or more.

[5] The device described in any one of items [1] to [3], further comprising a band-shaped or linear shape-maintaining member 23 for shape maintenance installed around the conductor 21. Balanced wire (2).

[6] The conductor 21 is a balanced wire in which the outer diameter of the first wire (21a) is larger than the outer diameter of the second wire (2lb) and is described in any one of [1] to [3]. (2).

[7] A balanced electric wire (1) with a terminal having a flat electric wire (2) and a terminal (3) installed on at least one end of the flat electric wire (2), wherein the flat electric wire (2) is a strip-shaped conductor. (21) and an insulator (22) covering the periphery of the conductor (21), wherein the conductor (21) is a strip-shaped first conductor formed by knitting together first wires made of aluminum or aluminum alloy. (21a) and a second conductor (2lb) formed to insert the first conductor (21a) at least in the thickness direction of the conductor (21) and formed by knitting second wires made of copper or a copper alloy together. Equipped with a terminal-attached flat wire (1).

[8] Non-crimped conductor 21 exposed between the tip of the insulator 22 and the tip of the terminal 3, and also the conductor 21 in the portion where the terminal 3 is not fixed. The terminal-equipped flat wire (1) described in [7], wherein the length of the portion (5) is equal to or greater than the width of the flat wire (2).

[9] A covering member (4) provided to collectively cover the non-compression portion (5), at least a portion of the terminal (3), and an end portion of the insulator (22), wherein the non-compression portion (5) ) The flat wire with terminal (1) described in [8], wherein the outer shape of the covering member (4) covering the terminal is tapered.

In the above, embodiments of the present invention have been described, but the embodiments described above do not limit the invention as per the claims. In addition, it should be noted that it cannot be limited that all combinations of features described in the embodiments are essential to the means for solving the problems of the invention. Additionally, the present invention may be implemented with appropriate modifications without departing from its spirit.

1 flat wire with terminal
2 balanced wire
21 conductor
21a first conductor
2lb second conductor
22 insulator
23 Shape maintenance member
3 terminal
4 Heat shrink tube (covering member)

Claims (9)

A strip-shaped conductor,
The insulator covering the conductor is
Equipped with
The conductor is,
A strip-shaped first conductor composed of first wires made of aluminum or aluminum alloy knitted together,
A second conductor formed to insert the first conductor at least in the thickness direction of the conductor and composed of second wires made of copper or a copper alloy knitted together.
equipped with
Balanced wire. According to paragraph 1,
The second conductor is formed in a cylindrical shape to cover the entire circumference of the first conductor.
Balanced wire. According to paragraph 1,
The conductor includes a pair of the second conductors formed in a strip shape,
It is constructed by inserting the first conductor into a pair of the second conductors in the thickness direction of the conductor.
Balanced wire. According to any one of claims 1 to 3,
The ratio (W/H) of thickness (H) and width (W) is 4 or more.
Balanced wire. According to any one of claims 1 to 3,
Further comprising a strip-shaped or line-shaped shape-maintaining member installed around the conductor for shape-maintenance.
Balanced wire. According to any one of claims 1 to 3,
The conductor has an outer diameter of the first wire that is larger than the outer diameter of the second wire.
Balanced wire. A terminal-attached flat wire having a flat wire and a terminal installed at at least one end of the flat wire,
The balanced wire is,
A strip-shaped conductor,
The insulator covering the surrounding conductor is
Equipped with
The conductor is:
A strip-shaped first conductor composed of first wires made of aluminum or aluminum alloy knitted together,
A second conductor formed to insert the first conductor at least in the thickness direction of the conductor and composed of second wires made of copper or a copper alloy knitted together.
equipped with
Flat wire with terminals. In clause 7,
The conductor exposed between the front end of the insulator and the front end of the terminal, and the length of the non-crimped portion, which is the conductor in the portion where the terminal is not fixed, is greater than or equal to the width of the balanced wire.
Flat wire with terminals. According to clause 8,
A covering member provided to collectively cover the non-compressed portion, at least a portion of the terminal, and a tip portion of the insulator,
The outer shape of the covering member covering the non-compressed portion is tapered.
Flat wire with terminals.