Wire / cable connection structure

Abstract

To provide a connection structure for electric wires and cables, which can electrically connect a plurality of electric wires and cables without impairing current-carrying performance, without applying an excessive load to the terminals, conductors, etc. of the electric wires and cables. [Solution] The shuttlecock portion 11 of each terminal 10 attached to the tip of a plurality of electric wires / cables 50 is connected to a conductive plate 20, so that the plurality of electric wires / cables 50 are connected via the conductive plate 20, and the plurality of electric wires / cables 50 can be connected to each other at any angle θ in the surface direction of the conductive plate 20, and no matter what angle θ the plurality of electric wires / cables 50 are connected to, the contact surface 11a of the shuttlecock portion 11 of each terminal 10 is connected to the conductive plate 20 in a state where it is in full contact with the conductive plate 20.

Description

[Technical field]

[0001] The present invention relates to a method for electrically connecting a plurality of electric wires or cables. Connection structure Regarding. [Background technology]

[0002] Wiring work for electric wires and cables used for power distribution involves connection work. However, a sufficiently large space is not always available for the connection work of electric wires and cables, and the connection must often be performed in a narrow space such as a pull box 100 shown in FIG. However, although not shown in the figures, for example, a so-called straight connection method in which the conductors 51 of two electric wires / cables 50 are inserted into a connecting tube from both ends and then the connecting tube is crimped to connect them is difficult to adopt because it is difficult to secure a straight section within the pull box 100.

[0003] In addition, although not shown, it is difficult to provide a terminal block within the pull box 100 for connection. Since it is difficult to attach terminals 10 (see FIG. 12(a) described later) to electric wires / cables 50 inside the narrow pull box 100, the electric wires / cables 50 are temporarily pulled out of the pull box 100, the covering of the electric wires / cables 50 is stripped, and the terminals 10 are attached to the conductors 51, respectively. However, once the position of the terminal block is determined and the terminal block is fixed inside the pull box 100, it is difficult to return the electric wires / cables 50 that have been pulled out of the pull box 100 to their original state, which makes it difficult to attach the terminals 10 to the terminal block.

[0004] In addition, even if terminals 10 are attached to the electric wires / cables 50 that are pulled out to the outside of the pull box 100 and a terminal block is also attached, it is difficult to fit the terminal block inside the pull box 100. Thus, it is difficult to provide a terminal block inside the pull box 100 to connect the electric wires / cables 50 to each other.

[0005] Meanwhile, in recent years, aluminum or aluminum alloys are sometimes used for the conductors 51 of electric wires and cables 50 used for power distribution purposes, in order to improve workability due to their light weight and to reduce the burden on workers. When the conductor 51 of the electric wire / cable 50 is made of aluminum or an aluminum alloy, it is more difficult to bend because of its stronger repulsion to bending than conventional copper or copper alloys, and therefore the above-mentioned problems are likely to occur.

[0006] Therefore, when connecting the electric wires / cables 50, a so-called pine-needle-shaped connection method may be adopted (see FIG. 12(a) described later). By adopting this method, the electric wires / cables 50 can be electrically connected to each other relatively easily even in a narrow space such as the inside of the pull box 100. For example, the Internal Wiring Regulations (see Non-Patent Document 1) prescribe a method of connecting aluminum conductors in a pine needle shape, including connection using a ring sleeve, C-shaped connector, etc., as well as a connection method using a terminal 10 as shown in Figure 12(a).

[0007] For example, when connecting the conductors 51 of two electric wires / cables 50 with the terminals 10, the electric wires / cables 50 are once pulled out of the pull box 100, and the terminals 10 are attached to the conductors 51 of the electric wires / cables 50 by crimping, and the shuttlecock portions 11 of the terminals 10 are screwed together as shown in FIG. 12(a) to connect the conductors 51 together in a pine needle shape. Then, by returning it into the pull box 100, it becomes possible to relatively easily electrically connect the electric wires / cables 50 together even in a small space such as the inside of the pull box 100 as shown in FIG. 12(b).

[0008] Generally, the connecting parts such as the terminals 10 are insulated by covering them with insulating caps or wrapping them with insulating tape before being returned to the pull box 100. Therefore, in FIG. 12(b), the state in which the terminal 10 and other parts have been subjected to insulation treatment or the like is conceptually represented by a square. [Prior art documents] [Non-patent literature]

[0009] [Non-Patent Document 1] Japan Electrotechnical Standards Committee, "Internal Wiring Regulations (Electrical Technical Regulations, Equipment Used) JEAC8001-2016", 13th Edition, Japan Electrical Association, 2016, p.60-62 Summary of the Invention [Problem to be solved by the invention]

[0010] However, when connecting the conductors 51 of the electric wires / cables 50 in a pine-needle shape, for example when the electric wires / cables 50 are connected in a bent state as shown in FIG. 13, the shuttlecock portions 11 of the terminals 10 may not abut against each other. To be precise, there are cases where the contact surfaces 11a of the shuttlecock portions 11 of the terminals 10 (the surfaces 11a of the shuttlecock portions 11 that come into contact with the shuttlecock portions 11 of other terminals) are in contact only at their tips, but not completely in contact.

[0011] If the shuttlecock portion 11 of the terminal 10 is forcibly tightened in this state, the shuttlecock portion 11 may be deformed, for example broken, or excessive force may be applied to the conductor 51. As a result, excessive load will continue to be applied to the terminal 10 (the shuttlecock portion 11) and the conductor 51, etc., and the electrical connection of the wire / cable 50 may no longer be maintained, possibly impairing the electrical performance. Moreover, if tightening is stopped in the state shown in FIG. 13 in order to avoid this, poor connection between the terminals 10 will occur, which may also impair electrical conductivity.

[0012] Furthermore, when the conductor 51 of the electric wire / cable 50 is made of copper or a copper alloy, there are cases in which, for example, as shown in FIG. 14, two electric wires / cables 50 are secured together with a cable tie 60 to bring the electric wires / cables 50 close to each other, and then terminals 10 are screwed together at the ends of the cable tie 60 to prevent the situation in FIG. 13 from occurring. However, when treated in this manner, the bend in the electric wire / cable 50 becomes tighter (see the part below the cable tie 60 of the electric wire / cable 50 in the figure), and when the conductor 51 of the electric wire / cable 50 is made of aluminum or an aluminum alloy, it strongly resists bending and is difficult to bend, so it is often difficult to bend the electric wire / cable 50 tightly in this manner and secure it with a cable tie 60 or the like.

[0013] The present invention has been made in consideration of the above points, and provides an electric wire / cable that can electrically connect a plurality of electric wires / cables without impairing the electrical performance, without placing an unnecessary load on the terminals or conductors of the electric wires / cables, even in the above-mentioned cases. Connection structure The purpose is to provide. [Means for solving the problem]

[0014] Exemplary Configurations In the connection structure of electric wires and cables, The shuttlecocks of the terminals attached to the ends of the two electric wires / cables are connected to a conductive plate, respectively, so that the two electric wires / cables are connected to each other via the conductive plate; The two electric wires / cables can be connected to each other at any angle in the surface direction of the conductive plate, No matter what angle the two electric wires / cables are connected to, the contact surfaces of the shuttlecocks of the terminals are connected to the conductive plate in a state where they are in full contact with the conductive plate, the contact surfaces of the shuttlecock parts of the terminals attached to the ends of the two electric wires / cables are arranged in a state of facing each other, the conductive plate is arranged between the contact surfaces, and the terminals and the conductive plate are connected in a state of abutting against each other, thereby connecting the two electric wires / cables via the conductive plate, The shuttlecock portions of the terminals attached to the ends of the two electric wires / cables may both be rectangular.

[0015] Exemplary Configurations In the connection structure of electric wires and cables, a shuttlecock portion of each terminal attached to the tip of a plurality of electric wires / cables is connected to a conductive plate, so that the plurality of electric wires / cables are connected via the conductive plate; The plurality of electric wires / cables can be connected to each other at any angle in the surface direction of the conductive plate, No matter what angle the plurality of electric wires / cables are connected to, the contact surfaces of the shuttlecocks of the terminals are connected to the conductive plate in a state where they are in full contact with the conductive plate, the plurality of electric wires / cables are connected via the conductive plate by connecting one or more shuttlecocks of the terminal to a plurality of locations of the conductive plate, The plurality of electric wires / cables may be connected to the conductive plate at different angles relative to one another in a surface direction of the conductive plate.

[0016] Exemplary Configurations In the above-mentioned electric wire / cable connection structure, The conductive plate is provided with a protrusion for preventing the shuttlecock of the terminal from rotating in a surface direction of the conductive plate, The protrusion may be formed by bending a part of the conductive plate.

[0017] The present invention relates to a connection structure for electric wires and cables, a shuttlecock portion of each terminal attached to the tip of a plurality of electric wires / cables is connected to a conductive plate, so that the plurality of electric wires / cables are connected via the conductive plate; The plurality of electric wires / cables can be connected to each other at any angle in the surface direction of the conductive plate, No matter what angle the plurality of electric wires / cables are connected to, the contact surfaces of the shuttlecocks of the terminals are connected to the conductive plate in a state where they are in full contact with the conductive plate, a single connection hole is provided in the shuttlecock portion of the terminal for connecting the shuttlecock portion to the conductive plate; The plurality of electric wires / cables may be connected to the conductive plate at any angle to each other in a surface direction of the conductive plate, with the connection hole as a center. The present invention relates to the above-mentioned electric wire / cable connection structure, When the electric wires and cables whose conductor is copper or a copper alloy are called copper conductor cables and the electric wires and cables whose conductor is aluminum or an aluminum alloy are called aluminum conductor cables, the plurality of electric wires and cables are made up of copper conductor cables and aluminum conductor cables, and the shuttlecock of the terminal of the copper conductor cable is made of copper or a copper alloy, and the shuttlecock of the terminal of the aluminum conductor cable is made of aluminum or an aluminum alloy; The shuttlecock portion of each terminal and the surface of the conductive plate may be plated. The present invention relates to the above-mentioned electric wire / cable connection structure, The copper conductor cable and the aluminum conductor cable may be connected to a plurality of locations on the conductive plate, respectively. The present invention relates to the above-mentioned electric wire / cable connection structure, The conductive plate may be provided with a protrusion for preventing the shuttlecock portion of the terminal from rotating in the surface direction of the conductive plate, and the protrusion may contact the outer edge of the terminal to prevent rotation. The present invention relates to the above-mentioned electric wire / cable connection structure, The surface of the protrusion may be plated.

[0018] The present invention teeth, the above In a connection structure for an electric wire or cable, when the electric wire or cable is connected at an arbitrary angle in the surface direction of the conductive plate, a virtual circle representing a range in which the outer edge part of the shuttlecock part of the terminal can be positioned is within the surface of the conductive plate. It may also be possible to use the

[0019] Exemplary Configurations In the above-mentioned electric wire / cable connection structure, The shuttlecock of each of the terminals attached to the ends of the plurality of electric wires / cables is rectangular in shape, Regardless of the angle at which the electric wire / cable is connected in the plane direction of the conductive plate, the corners of the shuttlecock portion of the terminal may be within the plane of the conductive plate.

[0020] Exemplary Configurations In the connection structure of electric wires and cables, a shuttlecock portion of each terminal attached to the tip of a plurality of electric wires / cables is connected to a conductive plate, so that the plurality of electric wires / cables are connected via the conductive plate; The plurality of electric wires / cables can be connected to each other at any angle in the surface direction of the conductive plate, No matter what angle the plurality of electric wires / cables are connected to, the contact surface of the shuttlecock of each terminal is connected to the conductive plate in a state where the contact surface is in full contact with the conductive plate, The conductive plate is provided with a protrusion for preventing the shuttlecock of the terminal from rotating in a surface direction of the conductive plate, The protrusion may be formed by bending a part of the conductive plate.

[0021] Exemplary Configurations In the above-described electric wire / cable connection structure, the protrusion may be formed by bending an outer edge of the conductive plate. Exemplary Configurations In the above-mentioned electric wire / cable connection structure, the protrusion may come into contact with an outer edge of the terminal to prevent rotation. Exemplary Configurations In the above-described electric wire / cable connection structure, the protrusion may be formed by bending different outer edges of the conductive plate to the front side and back side of the conductive plate.

[0022] Exemplary Configurations In the connection structure of electric wires and cables, a shuttlecock portion of each terminal attached to the tip of a plurality of electric wires / cables is connected to a conductive plate, so that the plurality of electric wires / cables are connected via the conductive plate; When the electric wire / cable has a copper or copper alloy conductor, it is called a copper conductor cable, and when the electric wire / cable has an aluminum or aluminum alloy conductor, it is called an aluminum conductor cable. When the copper conductor cable and the aluminum conductor cable are connected to the conductive plate, at least one of the copper conductor cable and the aluminum conductor cable is waterproofed, The terminal cylinder portion of the terminal is a sealed type, A waterproof compound is contained in the terminal tube portion, The waterproof compound may contain metal powder. Exemplary Configurations In the above-mentioned electric wire / cable connection structure, The plurality of electric wires / cables can be connected to each other at any angle in the surface direction of the conductive plate, Regardless of the angle at which the multiple electric wires / cables are connected, the contact surfaces of the shuttlecock portion of each terminal may be connected to the conductive plate in a state in which they are in full contact with the conductive plate.

[0023] The present invention teeth, the above In the electric wire / cable connection structure, the electric wire / cable that has been subjected to a waterproofing treatment is the aluminum conductor cable. It may also be possible to use the The present invention teeth, the above In the connection structure of electric wires and cables, the terminal attached to the end of the aluminum conductor cable is made of aluminum or aluminum alloy and has a plated surface. It may also be possible to use the The present invention teeth, the above In the connection structure of electric wires and cables, the terminal and conductive plate attached to the end of the copper conductor cable are plated. It may also be possible to use the

[0024] Exemplary Configurations In the connection structure of electric wires and cables, The contact surfaces of the shuttlecock parts of the terminals attached to the ends of two electric wires / cables are arranged to face each other, a conductive plate is arranged between the contact surfaces, and the terminals and the conductive plate are connected in abutting contact with each other, thereby connecting the two electric wires / cables via the conductive plate, The portions of the electric wires / cables to which the terminals at the ends are connected may be insulated, the two electric wires / cables may be connected in a pine-needle shape, and the conductive plate may be sandwiched between the shuttlecock portions of the terminals to prevent the insulated portions from interfering with each other.

[0025] Exemplary Configurations In the above electric wire / cable connection structure, an insulating treatment may be applied to a connection portion between the terminals. Exemplary Configurations In the above electric wire / cable connection structure, the entire electric wire / cable connection structure may be covered with an insulating member. Exemplary Configurations In the above electric wire / cable connection structure, the shuttlecock portion of the terminal may have one connection hole for connecting the shuttlecock portion to the conductive plate. Exemplary Configurations In the above-mentioned electric wire / cable connection structure, the plurality of electric wires / cables may be made of copper conductor cables and aluminum conductor cables, and the shuttlecock portion of each terminal and the surface of the conductive plate may be plated. Exemplary Configurations teeth, A method for connecting two electric wires or cables in a pine needle shape, comprising: Pulling out the two electric wires / cables from a pull box; a step of arranging the contact surfaces of the shuttlecocks of the terminals attached to the ends of the two electric wires / cables so as to face each other, disposing a conductive plate between the contact surfaces, and connecting the terminals and the conductive plate in abutting contact with each other to connect the two electric wires / cables in a pine needle shape via the conductive plate; Returning the two connected electric wires / cables back into the pull box; The present invention may be directed to a method for manufacturing a semiconductor device. Exemplary Configurations The above-mentioned electric wire / cable connecting method may further include a step of insulating the connection portion of the terminals. Exemplary Configurations The above-mentioned electric wire / cable connecting method may further include a step of covering the entire electric wire / cable connecting structure with an insulating member. Exemplary Configurations In the above-mentioned electric wire / cable connecting method, the shuttlecock portion of the terminal may be provided with one connection hole for connecting the shuttlecock portion to the conductive plate. Effect of the Invention

[0026] According to the present invention, it is possible to electrically connect a plurality of electric wires or cables without impairing the electrical conductivity, without placing an unnecessary load on the terminals or conductors of the electric wires or cables. [Brief description of the drawings]

[0027] [Figure 1] FIG. 1A is a plan view showing an electric wire-cable connection structure according to an embodiment of the present invention, and FIG. [Diagram 2] 13A and 13B are diagrams showing examples of the contact surface of the shuttlecock portion of a terminal. [Diagram 3] 13 is a diagram illustrating that the conductive plate is configured to include an area where the contact surface of the shuttlecock portion of each terminal can come into contact with the conductive plate. FIG. [Figure 4] 13(a) and 13(b) are diagrams explaining that, in the absence of a conductive plate, the terminals are connected in a state where only part of the contact of the shuttlecock part comes into contact. [Diagram 5] (a) is a diagram showing a state in which the insulated parts interfere with each other and the shuttlecock portions of the terminals do not come into contact with each other, and (b) is a diagram showing that by interposing a conductive plate, the shuttlecock portions of each terminal are completely connected to the conductive plate. [Figure 6](a) is a photograph of a terminal for an aluminum conductor cable clamping the shuttlecock portion of a terminal for a copper conductor cable from above and below, and (b) is a photograph of a terminal for an aluminum conductor cable hooked onto the copper conductor of a copper conductor cable. [Figure 7] 1(a) to 1(c) are diagrams showing a connection structure of an electric wire / cable in which a shuttlecock portion of one or more terminals is connected to multiple locations on a conductive plate. [Figure 8] FIG. 13 is a diagram showing a state in which each electric wire / cable is configured to have any angle with respect to each other in the surface direction of the conductive plate. [Figure 9] FIG. 2A is a plan view showing a state in which a pin is attached to a conductive plate as a protrusion, and FIG. [Figure 10] FIG. 1A is a diagram showing an example of a conductive plate provided with protrusions, and FIG. 1B is a diagram showing a state in which a plurality of electric wires / cables are connected to the conductive plate of FIG. [Figure 11] This is a diagram showing the pull box and the electric wires and cables drawn into the pull box. [Figure 12] (a) is a diagram showing two electric wires / cables connected in a pine-needle shape, and (b) is a diagram showing the state in which the electric wires / cables are connected in a pine-needle shape inside a pull box. [Figure 13] FIG. 13 is a diagram showing a state in which the shuttlecock portions of the terminals do not abut against each other when electric wires or cables are connected in a pine-needle shape. [Figure 14] This is a diagram showing the state in which two electric wires / cables are fixed with a cable tie and the terminals are connected to each other. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, with reference to the drawings, an embodiment of a wire / cable connection structure according to the present invention will be described by way of example. However, the embodiments described below are subject to various limitations that are technically preferable for implementing the present invention, but the scope of the present invention is not limited to the following embodiments or illustrated examples.

[0029] Furthermore, the present invention can be applied not only to the case of connecting an electric wire or cable whose conductor is copper or a copper alloy (hereinafter sometimes simply referred to as a copper conductor cable (including the case of an electric wire)) to an electric wire or cable whose conductor is aluminum or an aluminum alloy (hereinafter sometimes referred to as an aluminum conductor cable (including the case of an electric wire)), but also to the case of connecting copper conductor cables together or aluminum conductor cables together. In the following description, unless otherwise specified as a copper conductor cable or an aluminum conductor cable, the electric wire / cable 50 may be a copper conductor cable or an aluminum conductor cable.

[0030] 1(a) and (b) are diagrams illustrating an electric wire-cable connection structure according to this embodiment, where (a) is a plan view and (b) is a perspective view. In the electric wire / cable connection structure 1 according to this embodiment, terminals 10 having shuttlecock portions 11 are attached to the exposed conductors 51 at the ends of two electric wires / cables 50, respectively. The shuttlecock portion 11 of each terminal 10 is connected to a conductive plate 20 having electrical conductivity, so that two electric wires / cables 50 are connected via the conductive plate 20 .

[0031] Specifically, in this embodiment, the contact surfaces 11a of the shuttlecock portions 11 of the terminals 10 attached to the ends of the electric wires / cables 50 are arranged facing each other, and a conductive plate 20 is arranged between the contact surfaces 11a. The terminals 10 and the conductive plate 20 are connected by screwing them together with a bolt 30 while in abutment with each other, thereby connecting the two electric wires / cables 50 via the conductive plate 20. At that time, the two electric wires / cables 50 can be connected to each other at an arbitrary angle θ in the surface direction of the conductive plate 20. The angle θ may be 0° or 180°, or may be any other angle.

[0032] Furthermore, regardless of the angle θ at which the two electric wires / cables 50 are connected as described above, the contact surfaces 11a of the shuttlecock portions 11 of each terminal 10 are connected to the conductive plate 20 in a state in which the entire surfaces of the shuttlecock portions 11a are in contact with the conductive plate 20. That is, as illustrated in Figures 2(a) and (b), the contact surface 11a (the dotted part in the figure) of the shuttlecock portion 11 has various shapes for each terminal 10, and the conductive plate 20 is formed large enough to allow the contact surface 11a of the shuttlecock portion 11 to make contact over the entire surface.

[0033] In other words, as shown in Figure 3, the conductive plate 20 is configured so that the surface 21 to which the shuttlecock portion 1 of each terminal 10 is connected (in this case, each of the two surfaces 21) includes an area A (area A circularly surrounded by a dotted line in Figure 3) in which the contact surface 11a of the shuttlecock portion 11 of each terminal 10 can come into contact with the conductive plate 20 when the two electric wires / cables 50 are connected to each other at any angle θ in the surface direction of the conductive plate 20 as described above. The effect of this configuration will be explained later.

[0034] The material of the conductive plate 20, like the conductor 51 of the electric wire / cable 50, can be copper, a copper alloy, or aluminum or an aluminum alloy. When connecting copper conductor cables (terminals 10 are also made of copper or a copper alloy), it is preferable to use a conductive plate 20 made of copper or a copper alloy, and when connecting aluminum conductor cables (terminals 10 are also made of aluminum or an aluminum alloy), it is preferable to use a conductive plate 20 made of aluminum or an aluminum alloy.

[0035] In addition, when connecting a copper conductor cable (terminals 10 made of copper or copper alloy) and an aluminum conductor cable (terminals 10 made of aluminum or aluminum alloy), whether the conductive plate 20 is made of copper or copper alloy or aluminum or aluminum alloy, contact between dissimilar metals will occur between the conductive plate 20 and the terminal 10, and galvanic corrosion (galvanic corrosion) may occur. However, if the surface of the conductive plate 20 is plated with tin, nickel, or the like, and the surface of each terminal 10 is similarly plated with tin, nickel, or the like, galvanic corrosion can be prevented. When connecting copper conductor cables together or aluminum conductor cables together, the surfaces of the conductive plate 20 and the terminals 10 may be plated with tin, nickel, or the like.

[0036] Next, the effects of the electric wire / cable connection structure 1 according to this embodiment will be described. For example, even if there is an angle between two electric wires / cables 50 as shown in Figure 13, by changing the orientation of the terminals 10 attached to each electric wire / cable 50, it is possible to bring the contact surfaces 11a of the shuttlecock portions 11 of the terminals 10 attached to the ends of the electric wires / cables 50 into surface contact with each other, as shown in Figure 4(a).

[0037] However, in this case, the terminals 10 contact each other only on a part of the contact surface 11a of the shuttlecock portion 11 (the octagonal part marked with a dot in the figure) as shown in Figure 4(b), and the terminals 10 do not contact each other over the entire surface of the contact surface 11a. Therefore, the contact area between terminals 10 becomes smaller than when terminals 10 are in contact over the entire surface of contact surface 11a, which may impair the electrical conductivity at the connection portion between terminals 10.

[0038] In contrast, by adopting the wire / cable connection structure 1 of this embodiment, as shown in Figures 1(a) and (b) and Figures 2(a) and (b), the contact surface 11a of the shuttlecock portion 11 of each terminal 10 attached to the end of each wire / cable 50 is connected to the conductive plate 20 in a state in which the entire surface of each terminal 10 is in contact with the conductive plate 20. That is, as shown in Figure 3, each surface 21 of the conductive plate 20 to which the shuttlecock portion 1 of each terminal 10 is connected is configured to include an area A in which the contact surface 11a of the shuttlecock portion 11 of each terminal 10 can come into contact with the conductive plate 20 regardless of the angle θ at which the two electric wires / cables 50 are connected to each other in the surface direction of the conductive plate 20.

[0039] At that time, connection can be made without applying any force to the terminal 10, the conductor 51 of the electric wire / cable 50, etc., that would cause them to bend or twist. Therefore, in the electric wire / cable connection structure 1 according to this embodiment, the contact surfaces 11a of the shuttlecock portions 11 of the terminals 10 can be connected to the conductive plate 20 without applying extra load to the terminals 10, the conductors 51, and the like.

[0040] As described above, the electric wire / cable connection structure 1 according to this embodiment is configured to connect two electric wires / cables 50 via the conductive plate 20, so that it is possible to electrically connect the two electric wires / cables 50 without impairing the electrical performance, without placing extra load on the terminals 10, the conductors 51, etc. of the two electric wires / cables 50.

[0041] [Application example 1] Incidentally, for example, there are cases where the portion of the tip of the electric wire / cable 50 to which the terminal 10 is connected is insulated by wrapping insulating tape around it, but when insulation is performed in this manner, the insulated portion becomes thick. Therefore, for example, as shown in FIG. 5(a), even if terminals 10 are to be connected together in a pine-needle shape, the insulating portions B may interfere with each other, and the shuttlecock portions 11 of the terminals 10 may not come into contact with each other.

[0042] In such a case, by adopting the wire / cable connection structure 1 of this embodiment and configuring it so that the conductive plate 20 is sandwiched between the shuttlecock portions 11 of the terminals 10 of the two wires / cables 50, the insulated portions B will not interfere with each other, as shown in Figure 5(b), and the shuttlecock portions 11 of each terminal 10 will be fully connected to the conductive plate 20. Therefore, it becomes possible to reliably connect two insulated electric wires / cables 50 via the conductive plate 20, and normal electrical conductivity can be obtained. In this case, too, it is possible to configure the two electric wires / cables 50 so that they have an arbitrary angle θ with respect to each other in the surface direction of the conductive plate 20, as shown in FIG.

[0043] [Application example 2] Furthermore, when connecting a copper conductor cable and an aluminum conductor cable, there are cases where the terminals 10 of both cables cannot be connected properly. For example, the photograph in Figure 6(a) shows the shuttlecock part of a terminal (left side) for a 250 mm2 copper conductor cable connected to the shuttlecock parts of two terminals (right side) for 150 mm2 aluminum conductor cables, sandwiched between them from above and below. However, the tip of the shuttlecock part of the upper aluminum conductor cable terminal gets caught on the terminal for the copper conductor cable, and the shuttlecock parts of the upper aluminum conductor cable terminal and the copper conductor cable terminal are only partially in contact, and do not make sufficient contact.

[0044] Also, for example, in the photograph of Figure 6(b), when an attempt was made to connect a terminal for an aluminum conductor cable (right side) to a terminal for a copper conductor cable (left side), the tip of the shuttlecock part of the terminal for the aluminum conductor cable got caught on the copper conductor of the copper conductor cable, and the shuttlecock part of the terminal for the aluminum conductor cable was unable to come into contact with the shuttlecock part of the terminal for the copper conductor cable. In these connection states, normal electrical conductivity cannot be ensured.

[0045] Therefore, in such a case, the above problem can be avoided by adopting the wire / cable connection structure 1 of this embodiment, connecting the shuttlecock portion 11 of each terminal 10 attached to the tip of multiple electric wires / cables 50 to the conductive plate 20, and connecting the multiple electric wires / cables 50 via the conductive plate 20. That is, for example, as shown in Figures 7(a) to (c), by connecting the shuttlecock portions 11 of one or more terminals 10 to multiple locations on the conductive plate 20, it is possible to configure the conductive plate 20 so that multiple electric wires / cables 50 are connected via the conductive plate 20.

[0046] In this way, by adopting the wire / cable connection structure 1 of this embodiment in the above-mentioned case, one terminal will not get caught on the other terminal or conductor, as shown in Figures 6(a) and (b), and it is possible to bring the shuttlecock portion 11 of each terminal 10 into full contact with the conductive plate 20. Therefore, it becomes possible to reliably connect a plurality of electric wires / cables 50 via the conductive plate 20, and normal electrical conductivity can be obtained.

[0047] Although the above describes a case where a copper conductor cable and an aluminum conductor cable are connected, this Application Example 2 can also be applied to a case where copper conductor cables are connected to each other or aluminum conductor cables are connected to each other. In addition, although Figures 7(a) to (c) show the case where each terminal 10 is connected to two points on the conductive plate 20, it is also possible to configure each terminal 10 to be connected to three or more points on the conductive plate 20.

[0048] Furthermore, in this case as well, it is possible to configure the electric wires / cables 50 so that they are at any angle to each other in the surface direction of the conductive plate 20, as shown in FIG. Although not shown, for example, the electric wire / cable 50 at the bottom right of FIG. 8 can also be connected in parallel to the electric wire / cable 50 at the top right of the figure, and the extension direction of each electric wire / cable 50 can be bent, making it possible to connect each electric wire / cable 50 to the conductive plate 20 in any orientation.

[0049] [About anti-rotation] For example, when each terminal 10 is connected to a conductive plate 20 by screwing it with a bolt 30 as shown in FIG. 1, if there is a possibility that the shuttlecock portion 11 of the terminal 10 may move relative to the conductive plate 20 for some reason, causing the bolt 30 to rotate and become loose, it is possible to configure the conductive plate 20 to have a protrusion 22 to prevent the shuttlecock portion 11 of the terminal 10 from rotating in the surface direction of the conductive plate 20.

[0050] For example, as shown in FIGS. 9(a) and 9(b), it is possible to configure the conductive plate 20 so that a pin 23 can be attached to the conductive plate 20 as the protrusion 22. In this case, for example, it is possible to thread the tip of pin 23, form a screw hole 24 on surface 21 of conductive plate 20 to which terminal 10 is connected, and screw pin 23 into screw hole 24 so that pin 23 can be attached to conductive plate 20.

[0051] It should be noted that, in the case of Application Example 2 illustrated in FIGS. 7(a) to 7(c), it is also possible to configure the conductive plate 20 so that the pin 23 can be attached thereto. Furthermore, as shown in Figures 9(a) and (b), by providing screw holes 24 at multiple locations on surface 21 of conductive plate 20 and configuring it so that one or multiple pins 23 can be attached to any of those screw holes 24, it becomes possible to connect multiple electric wires / cables 50 at various angles relative to the surface direction of conductive plate 20.

[0052] In addition, for example, as shown in Figures 10(a) and (b), it is also possible to configure the conductive plate 20 so that a protrusion 22 for preventing rotation of the shuttlecock portion 11 of the terminal 10 is provided on the conductive plate 20 by bending a part of the conductive plate 20. Although FIG. 10(a) shows a case where the angle θ between the copper conductor cable 50 on the left side and the aluminum conductor cable 50 on the right side is 180°, it is possible to set the angle to any desired angle.

[0053] With the above-mentioned configuration, even if the shuttlecock portion 11 of each terminal 10 connected to the conductive plate 20 tries to rotate relative to the conductive plate 20, the movement is hindered by the protrusions 22 such as the pins 23 and the like and the shuttlecock portion 11 of the terminal 10 cannot rotate. This prevents the bolts 30 from turning and becoming loose, making it possible to maintain the initial state in which each terminal 10 is connected to the conductive plate 20.

[0054] Incidentally, in the case where the conductive plate 20 is provided with the protrusions 22 such as the pins 23, it is also preferable to configure the surface of the protrusions 22 so as to be plated with tin, nickel or the like. Furthermore, when pin 23 is used to prevent terminal 10 from rotating, pin 23 is required to be strong, so in some cases pin 23 is made of stainless steel or the like. Even in this case, however, if pin 23 is plated with tin, nickel, or the like, it is possible to prevent electrolytic corrosion and the like caused by contact between dissimilar metals.

[0055] [Waterproofing] In this embodiment, since contact between copper or a copper alloy and aluminum or an aluminum alloy may cause electrolytic corrosion due to contact between dissimilar metals, the present invention has been described in which plating with tin, nickel, or the like is applied to the parts where copper or a copper alloy may come into direct contact with aluminum or an aluminum alloy, i.e., the surfaces of terminals 10 and conductive plate 20 and the surfaces of protrusions 22 (including pins 23).

[0056] On the other hand, even if there is no direct contact between aluminum or aluminum alloy and copper or copper alloy that is not plated with tin, nickel, etc., such as copper or copper alloy conductor 51 or aluminum or aluminum alloy conductor 51, if moisture adhering to the copper or copper alloy comes into contact with the aluminum or aluminum alloy, electrolytic corrosion can still occur on the aluminum or aluminum alloy side, causing heat generation and, in the worst case, burning. For this reason, it is desirable that the electric wire / cable connection structure 1 according to this embodiment is subjected to a waterproofing treatment.

[0057] For example, when two electric wires / cables 50 are connected in a pine-needle shape, insulation is usually performed by covering the portion including the connection portion between the terminals 10 with an insulating cap or wrapping insulating tape around the portion, as shown in FIG. 12(b). However, simply providing insulation may result in moisture penetrating into the insulated connection due to some cause, such as condensation inside the pull box 100. If the connection is between a copper conductor cable and an aluminum conductor cable, this moisture may cause electrolytic corrosion as described above.

[0058] Therefore, in the wire-cable connection structure 1 according to this embodiment, particularly when a copper conductor cable and an aluminum conductor cable are connected to the conductive plate 20, it is desirable to subject them to a waterproofing treatment in order to prevent the above-mentioned electrolytic corrosion from occurring, and it is desirable for at least one of the copper conductor cable and the aluminum conductor cable to be waterproofed. When a copper conductor cable and an aluminum conductor cable are connected, the aluminum conductor cable is more likely to corrode. Therefore, when waterproofing is applied to either the copper conductor cable or the aluminum conductor cable as described above, it is desirable that the aluminum conductor cable also be waterproofed.

[0059] By applying a waterproofing treatment to either the copper conductor cable or the aluminum conductor cable thus connected, particularly to the aluminum conductor cable, it is possible to block the intrusion of moisture into the conductors 51, etc. of the electric wire / cable 50, thereby preventing the conductors 51, etc. from coming into contact with moisture. Therefore, even when a copper conductor cable and an aluminum conductor cable are connected in the electric wire-cable connection structure 1 according to this embodiment, it is possible to reliably prevent electrolytic corrosion from occurring.

[0060] For example, in Figs. 7(a) to (c) and 8 which explain Application Example 2, an example of an aluminum conductor cable 50 which has been subjected to a waterproofing treatment is shown on the right side of the figure. That is, as shown in FIG. 7(a), waterproofing can be performed by wrapping a waterproofing material 40 such as a waterproof tape or an adhesive sheet so as to span from the terminal tube portion 12 of the terminal 10 to the outermost layer 50a of the electric wire / cable 50, thereby covering the conductor 51 exposed between the terminal tube portion 12 of the terminal 10 and the outermost layer 50a of the electric wire / cable 50.

[0061] Furthermore, as shown in FIG. 7(a), waterproofing can be achieved by making the terminal tubular portion 12 of the terminal 10 to which the conductor 51 (not shown) is attached a sealed type. As can be seen in comparison with the open-type terminal 10 on the left side of the figure, in the closed-type terminal tube portion 12 on the right side of the figure, the shuttlecock portion 11 side of the terminal 10 is sealed off and airtight, making it possible to prevent moisture from entering the terminal tube portion 12 from that side.

[0062] Furthermore, it is preferable that the terminal 10 is configured so that the terminal tube portion 12 contains a waterproof compound. With this configuration, even if moisture penetrates through the waterproof member 40 wrapped around as described above, it is possible to prevent the moisture from penetrating at least into the terminal tube portion 12 of the terminal 10.

[0063] In addition, the conductor 51 of the electric wire / cable 50 is attached to the cylindrical terminal portion 12 by crimping (crimping or compressing) the cylindrical terminal portion 12 together with the conductor 51 inserted in the cylindrical terminal portion 12 of the terminal 10, and at that time, if the conductor 51 is made of aluminum or an aluminum alloy, the oxide film on the surface of the conductor is broken by the metal powder contained in the waterproof compound when the cylindrical terminal portion 12 is crimped. Therefore, it is possible to reliably electrically connect the conductor 51 and the cylindrical terminal portion 12 via the waterproof compound.

[0064] Although the above describes the case where an aluminum conductor cable is waterproofed, a copper conductor cable can also be waterproofed in the same manner. It is also possible to configure both the aluminum conductor cable and the copper conductor cable to be waterproof.

[0065] Furthermore, when all the electric wires and cables 50 can be waterproofed collectively, it is also possible to waterproof all the electric wires and cables 50 collectively. In this case, if the entire wire / cable connection structure 1, including the conductive plate 20, the convex portion 22, the shuttlecock portion 11, the terminal tube portion 12, and the bolts 30, etc., is waterproofed by wrapping it with a waterproofing material 40 such as insulating tape or an adhesive sheet, or by covering it with waterproof putty, it is possible to reliably prevent electrolytic corrosion caused by moisture and rust on the metal parts such as the conductive plate 20.

[0066] It goes without saying that the present invention is not limited to the above-described embodiment, and can be modified as appropriate without departing from the spirit of the present invention. [Explanation of symbols]

[0067] 1. Wire and cable connection structure 10 Terminals 11 Battledore Club 11a Contact surface 12 Terminal cylinder part 20 Conductive plate 21 sides 22 Convex 23 pin 50 Wires and Cables Area A θ angle

Claims

1. The shuttlecocks of the terminals attached to the ends of the plurality of electric wires / cables are connected to a conductive plate, so that the plurality of electric wires / cables are connected to the conductive plate, The plurality of electric wires / cables can be connected to each other at any angle in the surface direction of the conductive plate, No matter what angle the multiple electric wires / cables are connected to, the contact surfaces of the shuttlecocks of the terminals are connected to the conductive plate in a state where they are in full contact with the conductive plate, a single connection hole is provided in the shuttlecock portion of the terminal for connecting the shuttlecock portion to the conductive plate; The plurality of electric wires / cables are connected to the conductive plate with the connection hole as a center. are connected to each other at an arbitrary angle in the surface direction of the conductive plate, When the electric wire / cable whose conductor is copper or a copper alloy is called a copper conductor cable and the electric wire / cable whose conductor is aluminum or an aluminum alloy is called an aluminum conductor cable, the plurality of electric wires / cables are made of copper conductor cables and aluminum conductor cables, the shuttlecock portion of the terminal of the copper conductor cable is made of copper or a copper alloy, and the shuttlecock portion of the terminal of the aluminum conductor cable is made of aluminum or an aluminum alloy, The surfaces of the shuttlecocks of the terminals and the conductive plates are plated, A wire / cable connection structure, characterized in that the copper conductor cable and the aluminum conductor cable are connected to multiple locations on the conductive plate, respectively.

2. The wire / cable connection structure according to claim 1, characterized in that the conductive plate is provided with a convex portion for preventing the shuttlecock portion of the terminal from rotating in the surface direction of the conductive plate, the convex portion contacting the outer edge of the terminal to prevent rotation.

3. 3. The electric wire / cable connection structure according to claim 2, wherein the surface of the protrusion is plated.

4. 2. The electric wire / cable connection structure according to claim 1, characterized in that when the electric wire / cable is connected at any angle in the surface direction of the conductive plate, an imaginary circle representing the range in which the outer edge portion of the shuttlecock portion of the terminal may be located is within the surface of the conductive plate.

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