KR100839625B1 - Wrap Joints for Multiple Cable Splicing - Google Patents

Abstract

Wrap joint for multiple cable joint according to the present invention, one end is formed with a wire insertion hole, one end is formed with a wire insertion hole, the upper portion is cut in the groove provided, the center of the groove perpendicular to the longitudinal direction The first through hole is provided, the first through hole is in communication with the wire insertion hole, the lower plate is provided with a first coupling means for connecting to the other wrap joint on both sides in the longitudinal direction, while being seated in the first through hole of the lower plate The first wire rod mounting groove, which is a structure that can be stretched and which is a groove for seating the wire rod on the top thereof, is provided in the longitudinal direction, and includes a first copper plate made of a conductive material, and made of a conductive material, such as the first copper plate. It has a shape and structure, and when coupled to the first copper plate, the second wire seating groove abuts with the first wire seating groove of the first copper plate, and the first copper The second copper plate in which the wire is located in the hole formed by the coupling with the rate and the overall shape can cover the groove portion in which the lower part is cut, the second through hole is provided in the center perpendicular to the longitudinal direction On both sides in the longitudinal direction, the upper plate is provided with a second coupling means for connecting with another wrap joint.

Description

Lap joint for junction of multi cables}

1A and 1B are structural state diagrams showing each structure of the tokamak device.

2A is a conceptual diagram of a connection structure between a current lead line and a superconducting bus line.

Figure 2b is a view showing a wrap joint according to the prior art.

3A to 3D are an exploded perspective view, a combined perspective view, a plan view, and a cross-sectional view taken along line A-A of the multiple joint cable wrap joint according to an embodiment of the present invention.

4A to 4E are a perspective view, a right side view, a top view, a front view, and a sectional view taken along the line B-B 'of a lower plate of a wrap joint for multiple cable joining according to an embodiment of the present invention.

5A to 5D are a perspective view, left side view, top view, and C-C 'cross-sectional view of a copper plate of a wrap joint for multiple cable splicing according to an embodiment of the present invention.

6A to 6C are a perspective view, a plan view, and a cross-sectional view taken along line D-D 'of an upper plate of a wrap joint for multiple cable joining according to an embodiment of the present invention.

7A and 7B are separate and combined perspective views illustrating a connection between a wrap joint for a multi-cable joint and a general wrap joint according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

100: Wrap joint for multiple cable splicing

110: bottom 111: home

112: wire insertion hole 113: first through hole

114: coupling member (first coupling means) 114a: first coupling hole (first coupling means)

115: first latching jaw 120: first copper plate

121: first wire rod mounting groove 122: second locking jaw

123: third stopping step 130: second copper plate

131: second wire rod mounting groove 132: fourth locking jaw

133: fifth engaging jaw 134: hole (wire rod is located)

140: top plate 141: second through hole

142: coupling member (second coupling means) 142a: second coupling hole (second coupling means)

143: sixth latching jaw 200, 300: general wrap joint

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wrap joint for multiple cable splices, and more particularly to a wrap joint for multiple cable splices for electrically splicing three or more superconducting cables.

The superconducting magnets developed so far can produce a magnetic field of 13 tesla, which is 260,000 times the Earth's magnetic field, which is needed to create and trap the plasma required for the fusion reaction. Therefore, the core technology of the superconducting magnet is to make a superconducting magnet by forming coils by winding each wire known as 'ducting conductor conductor' (CICC). In-line twisted pair conductor (CICC) is a magnet made of a conductor surrounded by a rectangular metal tube of 360 or 486 stranded wire for 35kA class high current operation.The heat generated during operation of superconducting magnet is 4.5K. About 5 atm supercritical helium is forced to circulate into the stranded conductor.

1A and 1B are diagrams illustrating, as an example, a superconducting magnet manufactured in Korea. As illustrated in FIG. 1A, a superconducting magnet (100: SC Magnet) is used to confine a high temperature plasma without touching the wall of a vacuum vessel, and has a main device, the tokamak device 101. The tokamak device 101 is responsible for the generation, confinement, and control of plasma using a TF (Toroidal Field) and PF (Poloidal Field) coil. FIG. 1B illustrates the tokamak device 101 of FIG. 1A, which includes a TF structure 107 composed of a TF (Toroidal Field) coil, a CS structure 109 composed of a central solenoid (CS) coil, and a PF (Poroidal Field) coil. It consists of a PF structure 103 and a connecting structure 105 connecting each structure.

The coil built into the TF structure 107 is operated with a DC current of about 35 kA, and the coil of the CS structure 109 and the coil of the PF structure 103 are pulsed to operate the electromotive force due to mutual magnetic field change. Is generated inside to generate the plasma and serves to confine the plasma along with the plasma current and the TF magnetic field.

In order to make the above-described stranded conductor in a superconducting state, a current must be supplied to the stranded conductor in the tube. In order to supply current to the superconducting magnets, electrical joints (joints) such as superconducting bus lines are installed including both ends of the wire rod.

An example of a joint is as shown in FIG. 2A. That is, in order to electrically connect the power supply device 10 and the superconducting coil application device 50, the copper conductive phase conducting bus bar 20, the current lead wire 30, and the superconducting bus line 40 are connected to each other. The phase conducting busbar electrically connects the power supply and the current lead, and the superconducting busline connects the superconducting coil and the current lead. The connection of the current lead wire and the superconducting bus line and the connection of the superconducting bus line and the superconducting coil are made by the wrap joint 61.

Wrap joint 61 according to an embodiment of the present invention is a rectangular shape as shown in Figure 3b, the wire insertion hole 63 is passed through one end, the wire inserting portion 64 in the longitudinal direction in the center ) Is grooved. The wire rod inserting portion 64 communicates with the wire rod inserting hole 63, and the wire rod is inserted into the wire rod inserting portion 64 through the wire inserting hole 63. Here, the portion (pointing to the groove base) in which the wire rod is in direct contact is made of copper material, and this portion is called a copper plate 64a. That is, the wire rod is inserted into the wire rod inserting portion 64 through the wire inserting hole 63, wherein the wire rod is in direct contact with the copper plate 64a. In addition, a plurality of coupling holes 65 are penetrated at both sides of the lap joint in the longitudinal direction, and the coupling holes 65 are used to screw together with other lap joints (more specifically, coupling holes of other lap joints). It is provided. In addition, a cover 70 that is seated and coupled to the wire inserting portion 64 of the wrap joint is separately provided. The cover 70 covers the upper surface of the wire rod seated on the wire insert portion. In addition, as the cover is shown in Figure 3b, it is preferable to coat the inner peripheral surface with lead. The lead coating is intended to facilitate adhesion with the wire rod when later covered with the lid.

However, the wrap joint as shown in FIG. 2B is an apparatus for electrically connecting two superconducting cables. In order to connect a plurality of superconducting cables, the wrap joint should be provided with a plurality of wrap joints as described above. There is a problem in that the structure becomes complicated and messy when the interconnects are connected.

The present invention has been made to solve the above problems, the purpose is to connect and connect one or more wrap joints for multiple cable connection between the two wrap joints for the cable and multi-cable joints inserted into the wrap joint It is to electrically connect the cables inserted into the wrap joint.

In order to achieve the above object, the wrap joint for multiple cable joints according to the present invention has one end formed with a wire insertion hole, and has a groove formed by cutting a portion of the upper portion thereof, and having a groove perpendicular to the center of the groove in a longitudinal direction. A through hole is provided, and the first through hole communicates with the wire inserting hole, and the lower plate is provided with first coupling means for connecting with other wrap joints on both sides in the longitudinal direction, and is fitted into the first through hole of the lower plate. And a first wire seating groove which is a groove capable of seating the wire rod in the longitudinal direction, the first copper plate made of a conductive material, made of a conductive material, and the same shape as the first copper plate. Structure, the second wire seating groove abuts with the first wire seating groove of the first copper plate when the first copper plate is joined to the first copper plate. The second copper plate in which the wire is located in the hole formed by the coupling with the rate and the overall shape can cover the groove portion in which the lower part is cut, the second through hole is provided in the center perpendicular to the longitudinal direction On both sides in the longitudinal direction, the upper plate is provided with a second coupling means for connecting with another wrap joint.

In the present invention, the inner circumferential surfaces of the first copper plate and the second copper plate to be in contact with the lead-coated wire rod are coated with lead.

It is preferable to solder the contact surface between the first copper plate and the second copper plate.

In addition, it is preferable to solder the contact surface between the lower plate and the upper plate.

Preferably, the first copper plate and the second copper plate are made of a copper material.

In addition, the first copper plate and the lower plate are preferably formed integrally.

In addition, the second copper plate and the upper plate are preferably formed integrally.

For example, in the coupling method between the lower plate and the other wrap joint, coupling holes are formed at both sides in the longitudinal direction of the lower plate so as to correspond to the coupling holes of the wrap joint, and the coupling holes formed in the lower plate and the wrap joint are fastened by using a bolt or the like. And the like.

In the coupling method between the upper plate and another lap joint, for example, coupling holes are formed at both sides in the longitudinal direction of the upper plate so as to correspond to the coupling holes of the lap joint, and the coupling holes formed in the upper plate and the lap joint may be formed using bolts or the like. Fastening method.

The seating of the first copper plate on the first through hole provided in the lower plate may include a first catching jaw on an upper side of the lower plate contacting the first through hole, and the first catching jaw may cover the first catching jaw of the lower plate. It is possible by providing the second locking step below the copper plate.

In addition, the coupling between the first copper plate and the second copper plate is provided with a third catching jaw and a fourth catching jaw at portions where the first copper plate and the second copper plate are in contact with each other, and the first copper This is possible by soldering the contact surface between the plate and the second copper plate.

It is preferable that the first through hole provided in the upper plate and the second through hole provided in the lower plate are configured to be symmetric with each other.

When the coupling between the first copper plate and the lower plate is made, it is preferable that the lower surface of the first copper plate protrudes from the lower surface of the lower plate.

In addition, when the coupling between the second copper plate and the upper plate is made, it is preferable that the upper surface of the second copper plate protrudes from the upper surface of the upper plate.

As a method of soldering the contact surface between the first copper plate and the second copper plate, for example, after placing a lead sheet in a portion where the first copper plate and the second copper plate are in contact with each other, the upper and lower sides of the lead sheet are melted. There is a method of pressing.

As a method of soldering the contact surface between the upper plate and the lower plate, for example, after arranging a lead sheet in a portion where the upper plate and the lower plate contact, there is a method of pressing up and down in a state where the lead sheet is melted.

The radius of the wire seating groove is preferably designed to be the same as the radius of the lead coated wire.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3A to 3D are an exploded perspective view, a combined perspective view, a plan view, and a cross-sectional view taken along line A-A of the multiple joint cable wrap joint according to an embodiment of the present invention.

Referring to the drawings, when the components of the wrap joint 100 for a multi-cable joint according to an embodiment of the present invention is arranged in the order from the lower (up) direction to the upper (110) bottom plate 110, the first copper The plate 120, the second copper plate 130, and the upper plate 140 are formed.

The lower plate 110 and the upper plate 140 is made of a structure that can be coupled to each other, each of the lower plate 110 and the upper plate 140 is connected to the other wrap joint (indicated by 200 and 300 in Figure 7) First and second coupling means for each is provided.

Two plates (first copper plate and second copper plate) 120 and 130 are positioned between the lower plate 110 and the upper plate 140, and a cable wire is inserted between the two plates. In addition, soldering is performed to fix the plate and the wire.

In addition, the plates 120 and 130 are made of a conductive material (eg, copper) to electrically connect the cable wires positioned between the two plates and the cable wires inserted into the other two wrap joints.

In the present invention, it is preferable to perform electron beam welding between the lower plate 110 and the first copper plate 120 and between the upper plate 140 and the second copper plate 130.

In addition, in the present invention, it is preferable to perform TIG welding between the lower plate 110 and the upper plate 140.

As mentioned above, the first and second plates are made of copper, hereinafter also referred to as first and second copper plates.

Hereinafter, the structures of the lower plate, the first copper plate, the second copper plate, and the upper plate will be described in more detail with reference to FIGS. 4 to 6.

4A to 4E are a perspective view, a right side view, a top view, a front view, and a sectional view taken along the line B-B 'of a lower plate of a wrap joint for multiple cable joining according to an embodiment of the present invention.

The lower plate 110 of the wrap joint for multiple cable joints according to an embodiment of the present invention has a long rectangular shape in the longitudinal direction as shown in FIGS. 4A to 4E.

One end of the lower plate 110 is formed with a wire insertion hole 112 into which a wire rod (not shown) is inserted.

In addition, in the present invention, the upper portion of the lower plate 110 is cut off to include the groove 111. The groove 111 is covered with a top plate 140 to be described below.

The center of the groove 111 is provided with a hole (first through hole) 113 perpendicular to the longitudinal direction. In addition, the first through hole 113 communicates with the wire insertion hole 112.

First coupling means 114 and 114a are provided at both sides of the lower plate 110 in the longitudinal direction to connect with other wrap joints.

The first coupling means may have a variety of methods, but in one embodiment of the present invention, as shown in the drawing, a plurality of first coupling holes 114a are formed on both sides of the lower plate 110 in the longitudinal direction, and the first coupling hole And a first coupling hole formed at 114a and the other wrap joint using a bolt (not shown) or the like.

In more detail, in one embodiment of the present invention by installing the coupling member 114, the first coupling hole (114a) is formed in the form of wings on both sides in the longitudinal direction of the lower plate 110, the other wrap joint (Fig. 7 Corresponds to the reference numeral 200). Accordingly, the wing member coupling member (corresponding to reference numeral 210 of FIG. 7) is formed in the other wrap joint. Of course, the coupling hole of the lower plate and the coupling hole (corresponding to reference numeral 211 of FIG. 7) of the other wrap joint are provided correspondingly. For details, refer to the description of FIG. 7.

5A to 5D are a perspective view, left side view, top view, and C-C 'cross-sectional view of a copper plate of a wrap joint for multiple cable splicing according to an embodiment of the present invention.

3 and 5, the first copper plate 120 of the wrap joint for multi-cable joining according to the present invention has a semi-cylindrical shape, and is formed in the first through hole 113 provided at the center of the lower plate 110. It has a structure that can be stretched while being seated. As a result, the first copper plate 120 is shaped to fill the first through hole 113 and spans the first copper plate 120 so as not to escape from the first through hole 113.

Therefore, in the present invention, it is preferable to design the length of the first copper plate 120 to be equal to the length of the first through hole 113.

In addition, in order to allow the first copper plate 120 to be seated while seated in the first through-hole 113 as described above, the lower plate 110 and the first copper plate 120 in each embodiment of the present invention. The first and second locking jaws 115 and 122 are provided. In more detail, the first locking jaw 115 is provided above the lower plate 110 in contact with the first through hole 113, and the second locking jaw 122 is disposed below the first copper plate 120. It was provided so that the second locking jaw 122 to the first locking jaw (115).

In addition, in the present invention, a groove (first wire seating groove) 121 on which the wire rod is to be seated is provided on the first copper plate 120.

The radius of the first wire seating groove 121 is preferably equal to the radius of the wire rod (more accurately, lead-coated wire rod) (not shown) to be seated later. In other words, the first wire seating groove 121 should have a size to which the lead-coated wire rod can be seated.

In an embodiment of the present invention, the first wire seating recess 121 is not provided over the entire upper portion of the first copper plate 120 in the longitudinal direction. That is, looking at the upper side of the first copper plate 120 shown in the figure, it can be seen that one end 124 is opened by the first wire seating groove 121, the other end 125 is blocked. When the wire rod is seated, one end of the wire rod is positioned on the other side of the first copper plate 120.

Of course, in the present invention, the first wire seating recess 121 may be provided over the entire upper portion in the longitudinal direction of the first copper plate.

In the present invention, it is preferable that the first copper plate 120 and the lower plate 110 are integrally formed. As a result, it is not necessary to form the locking step in the lower plate and the first copper plate, so that the structure thereof is not only simple but also excellent in firmness.

In addition, in the present invention, when the first copper plate 120 is seated on the lower plate 110, it is preferable that the lower surface of the first copper plate 120 protrudes slightly more than the lower surface of the lower plate 110. This is for close contact with the copper plate (reference numeral 220 of FIG. 7) of the other wrap joint 200.

As described above, when looking at the insertion of the wire rod in the state in which the lower plate 110 and the first copper plate 120 are coupled, the wire rod is inserted through the wire insertion hole 112 and the first wire seating recess of the first copper plate It is seated at (121).

On the other hand, the second copper plate 130 has the same shape and structure as the first copper plate 120. However, when the second copper plate 130 is coupled to the first copper plate 120, the second wire seating recess 131 of the second copper plate 130 is the first of the first copper plate 120. Make contact with the wire seating groove 121. In other words, the lower portion of the second copper plate 130 and the upper portion of the first copper plate 120 in contact with the drawing.

As described above, in the present invention, when the first wire seating recess 121 of the first copper plate and the second wire seating recess 131 of the second copper plate are coupled in contact with each other, that is, the first and second wire seating recesses. When the 121 and 131 are combined, one hole 134 is formed, and a wire rod (not shown) is positioned in the hole 134.

The coupling method between the first copper plate and the second copper plate may vary, but in one embodiment of the present invention, the third and fourth latching jaws 123 and 132 may be in contact with each other. ), Respectively. Accordingly, the fifth locking jaw is provided on the upper side and the lower side of the first copper plate and the second sphere replate, respectively. In other words, the locking step (second locking step) 122 of the lower side of the first copper plate is connected to the locking step (first locking step) 115 provided on the upper side of the lower plate, and the locking step (first The third locking jaw 123 is connected to the locking jaw (fourth locking jaw) 132 below the second sphere replate, and the locking jaw (fifth locking jaw) 133 above the second copper plate is described below. It is connected to the locking jaw (sixth locking jaw) 143 provided on the lower side of the upper plate to be described.

In the present invention, it is preferable that the lead coating is applied to the inner circumferential surfaces (the first and second wire seating recesses 121 and 131) of the first copper plate 120 and the second copper plate 130. This is to ensure maximum adhesion between the lead coated wire and the first copper plate and between the lead coated wire and the second copper plate.

In addition, in the present invention, it is preferable to solder the contact surface between the first copper plate 120 and the second copper plate 130. This is also to improve the maximum adhesion between the two plates.

Here, although the soldering method is various, as an example, after arranging a lead sheet in the part which a 1st copper plate and a 2nd copper plate contact each other, there exists a method of pressing up and down in the state which a lead sheet melt | dissolves.

6A to 6C are a perspective view, a plan view, and a sectional view taken along the line D-D 'of an upper plate of a wrap joint for multiple cable splicing according to an embodiment of the present invention.

As shown in the figure, the upper plate 140 of the wrap joint for multi-cable bonding is a structure that can cover a portion of the groove 111 in which a portion of the lower plate 110 is cut in the overall shape.

That is, it is preferable to set the overall height, width and length of the upper plate 140 to be equal to the depth, width and length of the groove 111 provided on the upper plate.

The center of the upper plate 140 is provided with a hole (second through hole) 141 perpendicular to the longitudinal direction like the first through hole 113 of the lower plate. Here, the shape and size of the first through hole 113 of the upper plate and the second through hole 141 of the lower plate are preferably designed to be the same.

In addition, second coupling means 142 and 142a are provided at both sides of the upper plate 140 in the longitudinal direction to connect with another wrap joint (indicated by reference numeral 300 in FIG. 7).

Coupling between the upper plate 140 and another wrap joint 300 has a variety of methods, it is preferable to use the same method as the coupling between the lower plate 110 and the other wrap joint 200 as an example.

That is, the second coupling hole 142a is formed on both sides of the upper plate 140 in the longitudinal direction so as to correspond to the coupling hole (corresponding to reference numeral 311 in FIG. 7) of the wrap joint 300, and the upper plate 140 The second coupling holes 142a and 311 formed in each of the wrap joints 300 are fastened using bolts or the like.

In the present invention, it is preferable to form the second copper plate 130 and the upper plate 140 integrally.

In addition, in the present invention, when the second copper plate 130 and the upper plate 140 are combined, it is preferable that the upper surface of the second copper plate 130 protrudes slightly more than the upper surface of the upper plate 140. This is for close contact with the copper plate of another wrap joint 300 (reference numeral 320 in FIG. 7).

In the present invention, when the upper plate 140 is covered in the groove 111 formed by cutting a portion of the lower plate, it is preferable to solder the contact surface between the lower plate 110 and the upper plate 140.

In addition, in the present invention, it is preferable to configure the second coupling hole 142a provided in the upper plate and the first coupling hole 114a provided in the lower plate to be symmetric with each other.

7A and 7B are separate and combined perspective views illustrating a connection between a wrap joint for a multi-cable joint and a general wrap joint according to an embodiment of the present invention.

Referring to the drawings, the wrap joint for multiple cable joints according to the present invention is positioned between two common wrap joints 200 and 300 to electrically connect cable wires (not shown) inserted into each wrap joint. Play a role.

In the drawing, the general wrap joints provided on the upper and lower sides of the wrap joint for multiple cable joints have a vertically symmetrical structure. That is, the lap joint below the lap joint for the multi-cable joining is a rotation of the lap joint on the upper side of the lap joint for the multi-cable joining by 180 degrees with respect to the longitudinal direction.

Before examining the coupling relationship between the wrap joint 100 and the two wrap joints 200 and 300 for the multi-cable joint according to the present invention, a configuration of a general wrap joint will be described.

Typical wrap joints 200 and 300 have wire inserting holes 240 and 340 formed at one end thereof, and wire inserting portions 350 are formed in the longitudinal direction at the center thereof. The wire rod insertion unit 350 communicates with the wire rod insertion hole 340 and the wire rod is inserted into the wire rod insertion unit 350 through the wire rod insertion hole 340. Here, a portion (pointing to the groove base) in which the wire rod is in direct contact is made of copper, and the portions 220 and 320 are seated in the through holes 113 and 141 of the lower and upper plates shown in FIG. 5. Copper plate 120 and 130 have the same structure. Accordingly, the wire rod is inserted into the wire rod inserting portion through the wire inserting hole, wherein the wire rod is in direct contact with the plate. In addition, coupling members 210 and 310 formed with a plurality of coupling holes 211 and 311 are formed at both sides of the wrap joint 200 and 300 in the longitudinal direction. In addition, covers 230 and 330 that are seated and coupled to the wire insertion portion of the wrap joint are separately provided. The cover 230, 330 is to cover the wire rod seated on the wire insert.

As mentioned above, one wrap joint is respectively joined to the upper and lower sides of the wrap joint for multiple cable joining according to the present invention.

Looking at the coupling relationship between the wrap joint 100 for the multi-cable joint and the two wrap joints 200 and 300, the first coupling hole (114a) provided in the lower plate of the wrap joint for the multi-cable joint and the wrap for the multi-cable joint The coupling hole 211 of the other wrap joint 200 located below the joint is screwed (or bolted). In addition, the second coupling hole (142a) provided in the upper plate of the multi-joint lap joint and the coupling hole 311 of another lap joint 300 located on the upper side of the lap joint for multi-cable joining screw (or bolts) Combined). As a result, the cables inserted into the respective wrap joints 100, 200 and 300 are electrically connected.

In addition, in the present invention, by combining two or more multiple cable joint wrap joints, and combining the top and bottom of the multiple cable joint wrap joint and each one of the general wrap joint to connect four or more cables electrically Can be.

As described above, with reference to the preferred embodiment of the present invention, those skilled in the art will be variously modified and modified within the scope of the present invention without departing from the spirit and scope of the present invention described in the claims below. It will be appreciated that it can be changed.

Therefore, in the present invention, when the multi-cable joint wrap joint having the structure described above is disposed between two general wrap joints and connected, the cable inserted in the wrap joint and the cables inserted in the multi-joint wrap joint are electrically connected. This allows for multiple cable splices at the same time.

Claims (17)

One end is formed with a wire insertion hole, the upper portion is cut in the groove provided, a first through hole is provided in the center of the groove perpendicular to the longitudinal direction, the first through hole is in communication with the wire insertion hole, the length A lower plate having first coupling means for connecting to the other wrap joint in both directions; A first copper plate formed of a conductive material, the first wire seating recess being a structure that can be fitted while being seated in the first through hole of the lower plate and having a length of a first wire seating recess which is a groove for seating the wire rod on the top; It is made of a conductive material and has the same shape and structure as the first copper plate, and when coupled to the first copper plate, the second wire seating groove abuts with the first wire seating groove of the first copper plate, and the first copper plate. A second copper plate on which the wire is located in the hole formed due to the coupling; And The overall shape is a structure that can cover the groove portion in which a portion of the lower plate is cut, the center is provided with a second through hole perpendicular to the longitudinal direction, the second coupling means for connecting to another wrap joint on both sides of the longitudinal direction Wrap joint for multi-cable joining including a top plate provided. The method of claim 1, A wrap joint for multi-cable joining, characterized by coating the inner circumferential surfaces of the first and second copper plates to be in contact with the lead coated wire with lead. The method according to claim 1 or 2, And a solder joint for soldering the contact surface between the first copper plate and the second copper plate. The method of claim 3, wherein Lap joint for multi-cable bonding, characterized in that for soldering the contact surface between the lower plate and the upper plate. The method according to claim 1 or 2, The first copper plate and the second copper plate is a wrap joint for multiple cable joints, characterized in that made of a copper material. The method according to claim 1 or 2, The first copper plate and the lower plate is a wrap joint for multiple cable joints, characterized in that formed integrally. The method according to claim 1 or 2, The second copper plate and the upper plate is a wrap joint for multiple cable joints, characterized in that formed integrally. The method of claim 1, The coupling method between the lower plate and the other wrap joint forms the first coupling holes on both sides of the lower plate in a lengthwise direction of the lower plate so as to correspond to the first coupling holes of the wrap joint, and uses the bolts to connect the first coupling holes formed on the lower plate and the wrap joint. Wrap joint for multi-cable joining, characterized in that the fastening method. The method according to claim 1 or 8, The coupling method between the top plate and another wrap joint may include forming the second coupling holes on both sides of the top plate in a lengthwise direction of the top plate so as to correspond to the second coupling holes of the wrap joint, and bolting the second coupling holes formed on the top plate and the wrap joint. Lap joint for multi-cable joining, characterized in that the fastening method using. The method of claim 1, Seating of the first copper plate in the first through hole provided in the lower plate, The first cable is provided with a first locking step on the lower side of the lower plate in contact with the first through hole, and the second cable is characterized in that it is provided with a second locking step on the lower side of the first copper plate so as to span the first locking step of the lower plate. Lap Joint for Bonding. The method of claim 1, Bonding between the first copper plate and the second copper plate, A third locking jaw and a fourth locking jaw are respectively provided at portions where the first copper plate and the second copper plate are in contact with each other, and the contact surface between the first copper plate and the second copper plate is soldered. Lap joints for multiple cable splicing. The method of claim 1, Lap joint for multi-cable joining, characterized in that the first through hole provided in the upper plate and the second through hole provided in the lower plate is configured to be symmetric with each other. The method of claim 1, When the coupling between the first copper plate and the lower plate is made, the wrap joint for multiple cable joints characterized in that the lower surface of the first copper plate protrudes than the lower surface of the lower plate. The method of claim 1, When the coupling between the second copper plate and the top plate, the upper surface of the second copper plate is characterized in that the projecting wrap joint for the upper surface of the upper plate than the upper plate. The method of claim 3, wherein The method for soldering the contact surface between the first copper plate and the second copper plate is characterized in that the lead sheet is placed in the contact portion between the first copper plate and the second copper plate, and then pressed up and down while the lead sheet is melted. Wrap joint for multi-cable splicing. The method of claim 4, wherein The method of soldering the contact surface between the upper plate and the lower plate is a wrap joint for multi-cable bonding, characterized in that after placing the lead sheet in the contact portion between the upper plate and the lower plate, the lead sheet is pressed up and down in the melted state. The method of claim 2, The first and second wire seating grooves have a radius equal to that of a lead-coated wire rod.

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