KR101313875B1 - Connection connector for distribution board of grounding cable - Google Patents

Abstract

PURPOSE: A connector for connecting an underground distribution line to a distribution board is provided to prevent an electric leakage by disconnecting an adapter when tension is suddenly applied to the underground distribution line. CONSTITUTION: A distributor duct (220) is fixed to a distribution board. A coupling terminal (210) is movably installed in the distribution duct. A first connector (200) includes a first spring and a second spring. A connection pipe (120) is fixed to a connection terminal by a linker. A second connector includes a spring to apply rotary power to the connection pipe. [Reference numerals] (AA) Failure; (BB) Automatic disconnection

Description

Connector for exclusive connection of underground distribution line {CONNECTION CONNECTOR FOR DISTRIBUTION BOARD OF GROUNDING CABLE}

The present invention relates to a connector for exclusively connecting a switchboard of an underground distribution line, and more particularly, is formed of a shape memory alloy material mounted on an inner cutting groove of a fastening tube and coated with an insulating material, and the cutting unit is heated when the fastening tube is heated to a specific temperature. The present invention relates to an underground power distribution panel connection-only adapter that prevents an electrical leak, an electric shock, or a fire by physically cutting an underground distribution line by expanding it into a plate shape.

The high voltage electricity transmitted from the power plant is transformed into a voltage of a certain size in the substation and then distributed to the consumption area, and the distribution is generally performed through overhead distribution lines or underground distribution lines.

Distribution management is performed through wiring adjustment of overhead distribution lines or underground distribution lines. In large cities where the wiring adjustments are frequent, underground distribution line wiring schemes that improve space utilization efficiency and ease wiring adjustment and management are widely used.

Wiring adjustment of underground distribution lines can be made through connection control between underground distribution lines, between underground distribution lines and switchboards, and between underground distribution lines and switchboards.

The connector is connected to the underground distribution line to electrically and physically connect the underground distribution line with another underground distribution line, switchboard or distribution box (hereinafter referred to as underground distribution line) via an adapter.

In general, a connector or an adapter connects two connection terminals connected to an electrode body of a ground distribution line to each other so that the connector or adapter is electrically connected to each other, and various physically connects the connector and the adapter to each other so that the connection state is physically maintained. Means apply.

There may be a welding method, a bolting method, a forced press method, etc. by such a physical connection means.

Such a prior art has a problem in that it is not possible to prevent an accident such as an electric leakage that may occur when an electrical connection work and a physical connection work of the underground distribution line are abnormally made.

Korean Patent Registration No. 1050539 (2011.07.13.) "Adapter for connection of underground distribution line and switchboard" is a conventional technique that partially improves the problems of the prior art.

In this improved conventional technology, while the electrical connection work and the physical connection work of the underground distribution line are performed at the same time, the operator may not perform the physical connection separately, so that the wiring adjustment of the underground distribution line is easy and quick. It can be made, and the underground distribution line where the electrical connection work is performed, the physical connection work must be carried out, which can greatly reduce the error of wiring adjustment work, and the impact on the connector and the adapter when external force is applied to the underground distribution line A configuration was proposed to mitigate the electrical connection more stably.

However, the improved conventional technology is difficult to immediately deal with the abnormal situation occurring in the underground distribution line, so that the risk of short circuit or fire occurs until the adapter is released and the problem is solved.

In addition, the improved conventional technology is that when a sudden shock or tension is applied to the adapter for connection from outside, the applied tension is applied directly to the connector or the adapter, and in severe cases, the connector and the adapter are disconnected and a power failure occurs. There is still no solution to a fire that may be caused by a short circuit or a human accident that may occur due to an electric shock.

Republic of Korea Patent No. 10-1050539 (2011.07.13.) "Adapter for connection of underground distribution line and switchboard"

The present invention has been made in order to solve the above problems, when the electrical connection work and physical connection work of the underground distribution line is not normally done, the adapter only for connecting the switchboard of the underground distribution line to physically block the electrical connection of the underground distribution line The purpose is to provide.

In order to achieve the above technical problem, the present invention, the connection terminal (C ') is connected to the wire of the switchboard 300; The support jaw 221 is formed on the inner surface, the distribution tube 220 is fixed to the switchboard 300; And a connecting terminal C 'of the adapter connected to the wires installed in the switchboard 220, the connecting terminal C' accommodated therein, and having an insertion groove 212 open at the front thereof to form a tubular shape. The pressure bar 213 is formed to protrude, the outer surface is formed with a screw thread 211 in the forming range of the guide groove 132a, the support groove 214 formed on the circumferential surface is engaged with the support jaw 221 and the distribution tube 220 Fastening end 210 is moved to the inner (210); First connectors 200 installed on the left and right sides of the support grooves 214 on the support jaw 221 of the power distribution pipe 220 and having first and second springs to support the movement of the fastening end 210. A connection terminal C to which the underground distribution line L is connected; A fixing pipe 110 forming a tubular shape to receive the connection terminal C movably, the locking protrusion 111 protruding from the outer surface, and having a through groove 113 formed along the longitudinal direction; One end forms an insertion end 121 inserted into the first connector 200, a tube shape movably accommodating the fixed tube 110, and a protruding jaw 122 is formed along a central circumferential surface thereof, and a locking protrusion ( The guide groove 123 is formed in a direction connecting the insertion end 121 and the protruding jaw 122 so that the 111 is protruded and moves, and the connection terminal C is connected through the linker C1 penetrating the through groove 113. And a connector 120 fixed thereto; It forms a tube shape to accommodate the connection pipe 120, and is formed on the inner surface into which the first connector 200 is inserted to form a guide groove 132a for guiding the movement of the locking protrusion 111, and the first connector (on the inner surface). A fastening table 132 having a thread 132b corresponding to the thread of 200 is formed, and a stopper 133 engaged with the protruding jaw 122 to prevent detachment of the connecting pipe 120. Fastening tube 130; One end is fixed to the fastening pipe 130 and the other end is fixed to the connecting pipe 120, the second connector having a spring (140) for applying a rotational force to the fastening pipe 130 around the connecting pipe 120 ( It includes a 100, the fastening pipe 130, the temperature sensor for sensing the operating temperature of the underground distribution line; An operation sensor for collecting voltage and current information of the underground distribution line; A determination unit which determines whether a failure has occurred by comparing the specified voltage and current thresholds with voltage and current information collected by the operation sensor; And a control unit 1320 having a heating unit for heating the fastening tube 130 to a specific temperature by supplying electric power to the hot wire, and mounted in an inner cutting groove 1322 of the fastening tube 130, and having a shape memory coated with an insulating material. It is made of an alloy material, as the fastening tube 130 is heated to a specific temperature is cut to expand in a disk shape, attached to the inner surface of the fastening tube 130, made of a shape memory alloy material coated with a urethane material , The fastening tube 130 is fixed to the tube shape as it is heated to a specific temperature, is attached to the outer surface of the fastening tube 130, and collects and outputs the operating temperature, voltage and current from the temperature sensor and the operation sensor And a display 1310 that outputs a failure signal when the determination unit determines that a failure has occurred, and outputs a signal that an automatic disconnection mode is generated when the heating unit supplies power to the heating wire. It is a connector for exclusive use of the switchboard of the underground distribution line.

The present invention has the advantage of preventing a power outage in advance because the physical connection state is released when the physical connection work is not completely performed by the operator's mistake to proceed with the connection work again.

In addition, the present invention, when a sudden tension is applied to the underground distribution line from the outside, the applied tension is transferred directly to the connector or adapter to prevent the leakage of the connector or the adapter to prevent a short circuit occurs at the same time a fire, electric shock There is an advantage not to.

1 is an exploded perspective view of a connector for exclusive use of a switchboard for underground cable, according to an embodiment of the present invention;
2 is an exploded view illustrating a fastening pipe which is one component of a second connector according to an embodiment of the present invention;
3 is a view showing a front view of the exposed connector of the second connector according to an embodiment of the present invention,
4 is a cross-sectional view showing a coupling state of the fixed tube and the connecting tube according to an embodiment of the present invention,
5 to 8 are perspective views showing the connection operation of the first connector and the second connector of the adapter according to an embodiment of the present invention,
9 is a perspective view showing a state of a first connector according to an embodiment of the present invention;
10 is a cross-sectional view of a first connector according to an embodiment of the present invention;
11 is a perspective view illustrating a state in which the underground distribution line is physically cut by the fixing part and the cutting part according to an embodiment of the present invention;
12 is a view showing a state in which a fixing unit is operated in a fastening tube according to an embodiment of the present invention;
13 and 14 are views showing the operation of the cutting unit according to an embodiment of the present invention,
And
15 is a detailed functional configuration of the control unit according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, It will be possible. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The present invention uses the previously registered Patent No. 1050539 which will be described later. Therefore, the features of the device configuration described below are all those described in the registered Patent No. 1050539.

However, the present invention is a configuration in which the electrical cutoff structure of the underground distribution line is further strengthened by the cutting portion of the fastening tube among the components disclosed in the Patent No. 1050539, and this part forms the most essential structural feature.

Therefore, the device configuration, features and operation relations described below will be referred to the contents of the Patent No. 1050539 as it is, and in the later section will be described in detail with respect to the configuration related to the main features of the present invention.

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

1 is an exploded perspective view of a connector for exclusive use of a switchboard for underground cables according to an embodiment of the present invention, and FIG. 2 is an exploded view illustrating a fastening pipe which is a component of a second connector according to an embodiment of the present invention. 3 is a diagram illustrating a front view of a connection terminal of a second connector according to an embodiment of the present invention.

Hereinafter, the first connector 200 according to the present invention will be described in detail with reference to the accompanying drawings fastening end 210 for electrical connection with the distribution tube 220 and the second connector fixed to the switchboard 300 It includes. The second connector 100 includes a fixing tube 110 for receiving the connection terminal C connected to the electrode body of the underground distribution line L, a connecting tube 120 for receiving the fixing tube 110 so as to be movable, and a connecting tube. It includes a fastening tube 130 for receiving and rotatable 120.

Since the structure of the high voltage underground distribution line L, which is a type of copper wire cable, is well known and commonly used, its description is omitted here.

The connection terminal (C) is connected to each of the electrode body of the underground distribution line (L) and is electrically connected to the connection terminal (C ') to which the switchboard wires are connected. The connection terminal (C) is connected to the outer surface of the connection terminal (C) according to the present invention. Linker C1 for fixing with 120 is formed to protrude. On the other hand, since the connection terminal (C) is a well-known and common technique formed in a structure corresponding to the underground distribution line (L) which is a copper wire cable, the description thereof is omitted here.

The fixing tube 110 is formed in a tubular shape in which the locking protrusion 111 is formed at one point of the circumferential surface and the connection terminal C is accommodated, and the locking jaw 112 may be formed at the end thereof. At this time, the connection terminal (C) is fixed to be movable in the fixed tube 110, the through groove 113 for the penetration of the linker (C1) is formed along the longitudinal direction.

The connecting pipe 120 forms a tubular shape having a hollow in which the fixing pipe 110 is movably inserted, and guide grooves along the longitudinal direction from one end of the insertion end 121 to the center to move through the locking protrusion 111. 123 is formed, the protruding jaw 122 is formed in the center circumferential surface. As a result, the guide groove 123 is formed along the longitudinal direction from the insertion end 121 to the protruding jaw 122, and because of this structure, the locking protrusion 111 of the fixing pipe 110 is inserted into the connection pipe 120. It is possible to move smoothly along the guide groove 123 in a state of protruding within the range of the end 121 and the projection jaw 122, through which the fixing pipe 110 is connected to the connection pipe (within the range of the guide groove 123) 120) and is movably fixed.

At this time, as shown in Figure 15, the fastening pipe 130 is a temperature sensor (13210) for detecting the operating temperature of the underground distribution line (L), the operation sensor (13220), collecting the voltage, current information of the underground distribution line (L), dictionary Determining unit 1230 to determine whether a failure has occurred by comparing and analyzing the information of the voltage, current threshold and the voltage, current collected by the operation sensor 1320 and the difference value exceeds the allowable range and The control unit 1320 includes a heating unit 13240 for supplying power to the heating wire to heat the fastening tube 130 to rise to a specific temperature.

The determination unit 1322 may generate a failure when the information value of the voltage and current collected by the operation sensor 1320 is determined to be higher or lower than a threshold value of the voltage and current stored in advance by being specified in advance. It can be determined that, based on the value of 10% director, it is relatively preferable.

In addition, it is attached to the outer surface of the fastening tube 130 and receives or displays the operating temperature, voltage, current from the temperature sensor 13210 and the operation sensor 1320 and outputs it, and displays, and the failure occurs in the determination unit 1230 If it is determined that the output signal corresponding to the failure occurs (signal), and if the heating unit 13240 is supplied with power to the heating wire further comprises a display 1310 for outputting a signal (SIGNAL) that the automatic disconnection mode is generated do.

4 is a cross-sectional view showing a coupling state of the fixing tube and the connecting tube according to the present invention, the connecting structure of the fixing tube 110 and the connecting tube 120 will be described with reference to FIG.

Figure 4 (a) shows another view of the fixing tube 110 'according to the present invention that does not have a locking step (112).

Since the fixing tube 110 'is to be accommodated in the connector pipe 120 so as to be movable, a certain distance between the circumferential surface of the fixing pipe 110' and the inner surface of the connecting pipe 120 is inevitably generated, thereby fixing the tube 110 '. ) And the connector 120 can be moved relatively easily. By the way, since the fixed tube 110 'according to the present invention has a unique function of limiting the rotation of the fastening tube 130, the mobility of the fixed tube 110' and the connection pipe 120 in order to effectively exhibit the function It should be somewhat limited. Therefore, the fixing tube 110 ′ and the connecting tube 120 should be equipped with a closeness that can ensure a minimum of fixing enough not to move to its own weight.

An embodiment such as FIG. 4B may be presented. That is, as mentioned above, by forming the locking jaw 112 at one end of the fixing pipe 110, the projecting locking jaw 112 is to be in close contact with the inner surface of the connection pipe (120). Of course, in this case, as shown, one end of the fixing tube 110, the locking jaw 112 is located is subjected to pressure, through which one end will be bent while pressing the inner surface of the connection pipe 120 with its own restoring force. This pressurization may be a means for physically fastening the fixed tube 110 and the connection tube 120. For reference, as shown, it is preferable to form an incision in the portion where the locking step 112 is formed so that the bending of the end can be made without interference.

On the other hand, when a strong tension is applied from the outside, the locking jaw 112 is not applied to the inner surface of the connection pipe 120 alone can not guarantee a secure fastening of the fixing pipe 110 and the connection pipe 120.

In order to solve this problem, as shown in FIG. 4 (c), when the fixing tube 110 ″ is sufficiently inserted into the connecting tube 120, the locking jaw 112 ′ penetrates through the connecting tube 120. While being exposed to and caught, the fixing tube 110 ″ may be prevented from being separated from the connecting tube 120 even when subjected to a large tension.

The fastening pipe 130 is to accommodate the connection pipe 120 to rotate and move, the inner surface is provided with a fastening table 132 is formed with a screw thread (132b), one end of the inner surface to prevent the separation of the connection pipe 120 A stopper 133 for protruding is formed.

The fastening table 132 forms a shape through which the fixing tube 110 can penetrate, and a guide groove 132a opened along the longitudinal direction to allow the locking protrusion 111 of the fixing tube 110 to pass therethrough. Here, the thread 132b is not formed at the opened point of the guide groove 132a, and the thread 211 formed at the fastening end 210 of the first connector 200 faces the guide groove 132a. Since the fastening pipe 130 is engaged with the fastening end 210 of the first connector 200, the threads 132b and 211 do not interfere with each other.

The locking protrusion 111 of the fixing pipe 110 moving along the guide groove 123 of the connecting pipe 120 can move along the guide groove 132a of the fastening table 132, so that the linear movement is smooth and the locking stones When a part of the machine 111 is inserted into the guide groove 123 of the protruding jaw 122 of the connecting pipe 120, the locking protrusion 111 is the protruding jaw 122 and the fastening pipe 130 of the connecting pipe 120. While holding the fastener 132 of the) to prevent the connection pipe 120 and the fastening pipe 130 to rotate with each other.

The spring spring 140 is one end is fixed to the fastening pipe 130, the other end is fixed to the connection pipe 120, the rotational force through the elasticity to rotate the fastening pipe 130 around the connection pipe 120 Add. On the other hand, since the fastening pipe 130 forms a structure coupled to the connection pipe 120 to be movable, one end, the other end or both ends of the spring spring 140 is movable with the connection pipe 120 or the fastening pipe 130. May be connected. In the embodiment according to the present invention, the spring spring 140 is a spring in the form of a coil, and a groove is formed on the circumferential surface of the connection pipe 120 in which the spring spring 140 contacts, and one end of the spring spring 140 is Fixed to the connection pipe 120, the other end was fixed to the inner surface of the fastening pipe 130.

For reference, in the state in which the fixing tube 110, the connecting tube 120, and the fastening tube 130 are assembled, the spring spring 140 must have its own elastic force before it is coupled with the first connector 200. To this end, during the assembly process of the fixing pipe 110, the connecting pipe 120 and the fastening pipe 130, the spring spring 140 must be installed while maintaining the elastic force. To this end, in the embodiment according to the present invention, the support protrusion 132c is formed on the outer surface of the fastening table 132, and the support protrusion 132c is formed on the inner surface of the fastening pipe 130 where the fastening table 132 is inserted. To form the engaging engagement groove 134. At this time, the support protrusion 132c is formed to protrude only on a portion of the outer surface of the fastener 132, so that the operator can arbitrarily rotate the fastener 132 unless the fastener 132 is completely inserted into the fastening pipe 130. have.

As a result, the fixing pipe 110, the connection pipe 120, and the fastening pipe 130, except for the fastening table 132 are coupled to each other, the spring spring 140 in the loose state (the state without elastic force) both ends of the connection pipe When fixed to the 120 and the fastening pipe 130, respectively, a part of the fastening table 132 is inserted into the fastening pipe 130 in accordance with the guide groove 132a of the fastening table 132 to the locking projection 111. After forced rotation, the connector 120 is rotated by the engaging projection 111 received the rotational force of the fastening table 132, through which the spring spring 140 is twisted and has an elastic force. Subsequently, when sufficient elastic force is secured, the operator inserts the fastening table 132 into the fastening pipe 130 to allow the support protrusion 132c to be inserted into the engaging groove 134, thereby through the spring spring 140. The retaining elastic force prevents the connection pipe 120 from rotating.

The first connector 200 is installed in the switchboard 300, and is to be electrically and physically connected to the second connector 100, meshes with the connection terminal C of the second connector 100, and the switchboard 300. It includes a fastening end 210 for receiving the connection terminal (C ') to which the wire is connected. At this time, a predetermined insertion groove 212 is formed between the inner surface of the fastening end 210 and the outer surface of the connection terminal (C '). On the other hand, the first connector 200 according to the present invention is to forcibly push and move the fixed tube 110 of the second connector 100, the pressing table for smoothly facing the locking projection 111 of the fixed tube 110 ( 213 is formed on the front surface.

The fastening end 210 of the first connector 200 is inserted to penetrate through the connection pipe 120 as mentioned above, and guide grooves 132a on the outer surface to engage with the thread 132b formed on the inner surface of the fastening table 132. Thread 211 is formed in the range of formation. Therefore, the screw thread 211 of the fastening end 210 is formed of the screw thread of the fastening table 132 before the entire locking protrusion 111 of the fixing pipe 110 is inserted into the guide groove 123 of the protruding jaw 122. Do not engage with 132b). The description thereof will be described in detail with reference to the binding process between the second connector 100 and the first connector 200.

5 to 8 is a perspective view showing a state of the connection operation of the first connector and the second connector of the adapter according to the present invention, will be described with reference to this.

Here, Figures 5 to 8 (a) is a view showing a state in which the fastening tube 130 and the fixed tube 110 and the connecting tube 120 is coupled to the virtual, the drawing (b) the fastening tube 130 ) Is shown incision, and the connecting pipe 120 is omitted while showing the state of the fixed pipe 110.

In the second connector 100 according to the present invention, as shown in FIG. 5 (a), the fastening pipe 110 is inserted into the connecting pipe 120 and fixed to the fastening pipe 130. ) Is mounted in the hollow. At this time, the locking projection 111 of the fixing tube 110 is formed to pass through the guide groove 123 of the insertion end 121, so that the fixing tube 110 can move along the longitudinal direction to the connecting pipe 120. It is bound so that it cannot rotate.

On the other hand, the locking projection 111 of the fixing tube 110 is inserted into the guide groove 132a of the fastening table 132, as shown in Figure 5 (b), the fixing tube 110 and the fastening tube 130 is engaged. They can be bound together so that they can move along this length but cannot rotate.

The spring spring 140 for connecting the connecting pipe 120 is installed so that the elastic force is maintained in a state in which the fixed pipe 110, the connecting pipe 120 and the fastening pipe 130 are coupled as shown in FIG.

The worker fits the second connector 100 to the first connector 200 by matching the connection terminal C located on the second connector 100 to the connection terminal C ′ located on the first connector 200. At this time, the operator grasps the fastening pipe 130 of the second connector 100 and forcibly presses the second connector 100 into the first connector 200.

If the press-in continues, the connection terminal C of the second connector 100 is tightly fitted to the connection terminal C ′ of the first connector 200, and is closely attached to each other, as shown in FIG. 6. The front end of the 210 is inserted into the fastening table 132, and the fixing pipe 110 engaged with the fastening table 132 moves along the connecting pipe 120 due to the pressure of the front end of the fastening end 210. Here, since the locking projection 111 of the fixed tube 110 is constantly caught and fixed to the projection jaw 122 while moving along the guide groove 123 of the connecting pipe 120, the fixed tube 110 is a linear movement without rotation. To maintain and pressurized by the operator, the connection terminal C of the second connector 100 is further inserted into the connection terminal C ′ of the first connector 200 to be in close contact. Of course, such a structure prevents the fastening tube 130 from rotating due to the spring force of the mainspring 140 even if the worker releases the hand holding the fastening tube 130.

In addition, the insertion end 121 of the connection pipe 120 is inserted into the insertion groove 212 that is hollow of the fastening end 210, the pressing end 213 for the efficient contact with the locking projection 111 is inserted end ( While inserted through the guide groove 123 formed in the 121 to prevent the connection pipe 120 is rotated relative to the fixed pipe (110).

Meanwhile, the thread 211 of the fastening end 210 corresponding to the thread 132b of the fastening table 132 may have a surface or a guide groove facing the surface on which the thread 132b of the fastening table 132 is not formed. It is formed only on the surface facing the 132a, so that the threads (132b, 211) does not interfere when moving between the fastening table 132 and the fastening end (210).

When the worker continues the press-fitting, as shown in FIG. 7, when the locking protrusion 111 of the fixing tube 110 is completely separated from the guide groove 132a of the fastening table 132, the fastening tube 130 and the fixing tube 110 are fixed. The physical binding between the) is released, and when the operator releases the hand holding the fastening tube 130, the fastening tube 130 is rotated as shown in FIG. 8 by the elastic force of the spring spring 140. At this time, while the screw thread 132b of the fastening table 132 and the screw thread 211 of the fastening end 210 are coupled, the fastening pipe 130 moves along the fastening end 210, and eventually, the fastening pipe 130 is moved. The second connector 100 and the first connector 200 automatically form a physical coupling.

8 is a perspective view showing a state of a first connector according to the present invention, Figure 9 is a cross-sectional view of the first connector.

8 and 9, the operation of the first connector will be described when an external force is applied to the underground distribution line.

The distribution tube 220 has a support jaw 221 formed in the circumferential direction therein and is fixedly installed by the fixing frame 221 inside the distribution panel 300 through the distribution panel 300. The fastening end 210 has a support groove 214 formed on the circumferential surface thereof, and the support groove 214 is engaged with the support jaw 221 to be movable in the power distribution tube 220. The first and second springs 230 and 240 are respectively installed on the left and right sides of the support groove 214 formed in the fastening end 210 at the boundary of the support jaw 221 to support the movement of the fastening end 210.

An example in which tension is applied to the underground distribution line L will be described as an operation of the first connector 200. When tension is applied to the underground distribution line L, the applied tension is applied to the first connector 200 through the second connector 100. The first connector 200 receives a force in the outward direction of the switchboard 300 by the applied tension, and the force is applied to the outer end of the switchboard 300 through the fastening end 210 installed in the switchboard 220 so as to be movable. Move in the direction of At this time, the tension applied by the first and second springs 230 and 240 provided between the support jaw 221 of the distribution tube 220 and the support groove 214 of the fastening end 210 is directly applied to the fastening end 210. This prevents the support groove 214 of the fastening end 210 and the support jaw 221 of the power distribution pipe 2200 from colliding strongly with each other. The fastening end 210 is positioned at the original installation point due to the elasticity of the two springs 230 and 240. Since the fastening end 210 can move from side to side within a predetermined range, external force applied outside the switchboard 300. In addition, the amount of impact applied to the first connector 200 and the second connector 100 may be reduced with respect to the external force applied inside the switchboard 300.

As described above, the fastening end 210 is elastically movable so that the external force is momentarily applied to the connection portion between the first connector 200 and the second connector 100 to move the fastening end 210. It can be reduced by to ensure a more secure electrical connection of the first connector and the second connector.

FIG. 11 is a perspective view illustrating a state in which a underground distribution line is physically cut by a fixing part and a cutting part, FIG. 12 is a view showing a state in which a fixing part is operated in a fastening pipe, and FIGS. It is a figure which shows the appearance.

When it is determined that a failure has occurred because the difference between the voltage and current threshold specified by the determination unit and the voltage and current information collected by the operation sensor differs by more than 10%, which is an allowable error range, it is determined that the failure occurs. The fastening pipe 130 is heated to a specific temperature or more by supplying power to the hot wire distributed around the 130.

The fixing part is attached in close contact with the inner surface of the fastening pipe 130 to secure an internal space such that the underground distribution line L can be inserted into the fastening pipe 130 below a specific temperature. When power is supplied to the heating wire according to the operation of the control unit, the fastening pipe 130 is heated to a specific temperature, and the fixing part is swollen in the form of a tube, as shown in FIG. 12, and the underground distribution line L is inside the fastening pipe 130. Apply pressure so that it cannot move by external force.

Cutting portion 1323 is composed of one (1) or more multiple cutting pieces (1323-1), each of the cutting pieces (1323-1) is restored to its original shape as the fastening pipe 130 is heated to a specific temperature While cutting into the inner periphery of the underground distribution line (L) inward cut the underground distribution line (L). It is preferable that the cutting pieces 1323-1 consist of six pieces.

When the six pieces 1323-1 are affected by the high temperature and all of the normal restorations are completed, the underground distribution lines L are completely separated and cut because they are combined with each other to form one disc, disc, or tray. .

That is, as the plurality of cutting pieces 1323-1 constituting the cutting portion 1323 are gradually restored to their original shapes, the underground distribution lines L are physically cut to physically block the current from flowing.

Since the outer portion 1323 is coated with an insulating material, the cut portion 1323 functions to insulate between the cut underground distribution lines L. FIG.

The cutting portion 1323 is divided into six sections as shown in FIG. 13 (a), and each section maintains a folded state as shown in FIG. 14 (a) below a specific temperature. Subsequently, as shown in FIG. 13 (b), as the temperature of the fastening tube 130 rises, ends of the sections of the cut portions 1323 that are folded form a shape in the direction of the center of the circle in the form of FIG. 14 (b). The restoration will begin. Subsequently, each section of the cutout 1323 is restored in the form of a complete triangle as shown in FIG. 14 (c), and as shown in FIG. The manna is eventually restored to the original disc shape, and the underground distribution line L passing through the inside of the cutout 1323 is physically cut.

At this time, it is preferable that each cutting piece 1323-1 constituting the cutting portion 1323 has a triangular shape as a whole, and the end of the cutting portion has a relatively sharp shape.

In the detailed description of the present invention described above with reference to the preferred embodiments of the present invention, those skilled in the art or those skilled in the art having ordinary skill in the art will be described in the claims to be described later And it will be understood that various modifications and changes of the present invention can be made without departing from the scope of the art.

100: 2nd connector 110, 110 ', 100 ": fixed tube
111: Jamming 112: Jamming Jaw
121: insertion end 122: protruding jaw
123: guide groove 130: fastening pipe
140: manual spring 132: fastening table
133: locking projection 200: the first connector
210: tightening end 211: thread
212: insertion groove 214: support groove
220: power distribution pipe 221: support jaw
1310: display 1320: control unit
1321: fixing part 1322: cutting groove
1323: cutting portion 13210: temperature sensor
13220: operation sensor 13230: determination unit
13240: heating

Claims (1)

A connection terminal C ′ connected to an electric wire in the switchboard 300; A distribution tube 220 fixed to the switchboard 300 and having a support jaw 221 formed on an inner surface thereof; It forms a tubular shape having a connecting terminal (C ') of the adapter connected to the electric wire in the power distribution tube 220, the insertion groove (212) front opening to expose the connecting terminal (C') accommodated therein, the inner surface The pressure bar 213 is formed to protrude, the outer surface is formed with a screw thread 211 in the forming range of the guide groove 132a, the support groove 214 formed on the circumferential surface is engaged with the support jaw 221 and the distribution tube 220 Fastening end 210 is moved to the inner (210); First connectors 200 installed on the left and right sides of the support grooves 214 on the support jaw 221 of the power distribution pipe 220 and having first and second springs to support the movement of the fastening end 210. ,
A connection terminal C to which the underground distribution line L is connected; A fixing pipe 110 that forms a tubular shape to receive the connection terminal C so as to be movable, and an engaging protrusion 111 protrudes on an outer surface thereof, and a through groove 113 is formed along the longitudinal direction; One end forms an insertion end 121 inserted into the first connector 200, a tube shape movably accommodating the fixed tube 110, and a protruding jaw 122 is formed along a central circumferential surface thereof, and a locking protrusion ( The guide groove 123 is formed in a direction connecting the insertion end 121 and the protruding jaw 122 so that the 111 is protruded and moves, and the connection terminal C is connected through the linker C1 penetrating the through groove 113. And a connector 120 fixed thereto; It forms a tube shape to accommodate the connection pipe 120, and is formed on the inner surface into which the first connector 200 is inserted to form a guide groove 132a for guiding the movement of the locking protrusion 111, and the first connector (on the inner surface). A fastening table 132 having a thread 132b corresponding to the thread of 200 is formed, and a stopper 133 engaged with the protruding jaw 122 to prevent detachment of the connecting pipe 120. Fastening tube 130; One end is fixed to the fastening pipe 130 and the other end is fixed to the connecting pipe 120, the second connector having a spring (140) for applying a rotational force to the fastening pipe 130 around the connecting pipe 120 ( 100),
The fastening pipe 130 is
A temperature sensor 13210 installed at a portion of the fastening tube 130 to sense an operating temperature of the underground distribution line L; An operation sensor 1320 installed at a portion of the fastening tube 130 to collect information on voltage and current applied to the underground distribution line L; It is installed on a part of the fastening pipe 130 to compare a predetermined voltage and current threshold value and information of the voltage and current collected by the operation sensor 1320 to analyze the difference value to determine whether a failure occurred. Determination unit 1322; And a control unit 1320 formed at a portion of the fastening tube 130 to supply electric power to the heating wire to heat the fastening tube 130 to a specific temperature.
It is mounted in the cutting groove 1322 formed in the inner portion of the fastening tube 130 and made of a shape memory alloy material coated with an insulating material and expands in a disk shape as the fastening tube 130 is heated to a specific temperature. Cutout (1323),
As the inner surface of the fastening tube 130 and attached to the left and right of the cutting groove 1322, respectively, made of a shape memory alloy material coated with a urethane material and the fastening tube 130 is heated to a specific temperature A fixing part 1321 expanding into a tube shape and
It is attached to the outer surface of the fastening tube 130 and is connected to the control unit 1320, collect and output the operating temperature, voltage, current from the temperature sensor (13210) and the operation sensor (13220) and display the determination unit When it is determined that a failure occurs in any part by 1322, a failure occurrence signal is output and displayed according to a corresponding control signal of the determination unit 1322, and an automatic disconnection is generated when the heating unit 13240 supplies power to the heating wire. A display 1310 for outputting and displaying a signal that a mode is generated; Connector for exclusive connection of the switchboard of the underground distribution line comprising a.

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