KR102208974B1 - Connector for high voltage cable - Google Patents

Abstract

Provided is a high voltage cable connection device capable of effectively preventing accidents. The high voltage cable connection device comprises: a case having a connection terminal to which an indoor cable is electrically connected, and installed on an indoor wall surface; a guide block installed through the wall surface from an outdoor side so as to be connected to the case, and having a plurality of guide groove units; a cover member installed in the guide block so as to open or close the plurality of guide groove units at the same time; a fixing unit inserting the cable into the guide groove unit, and pressing the cable so as to closely contact an inner wall of the guide groove unit while a closing operation of the cover member is converted into the pressing operation and transmitted when the cover member is closed; a restraining connection unit restraining an end of the cable inserted into the case and at the same time electrically connecting the end of the cable to the indoor cable; and a conversion transmission unit converting the closing operation of the cover member and transmitting to the restraining operation of the restraining connection unit.

Description

High voltage cable connector {CONNECTOR FOR HIGH VOLTAGE CABLE}

The present invention relates to a high-voltage cable connection device, and more particularly, the cable can be connected indoors so that the cable does not contact the human body of the operator without a separate fastening operation, and a separate fastening operation for fixing the cable is omitted. It relates to a high voltage cable connection device capable of preventing safety accidents that may occur during work of fixing high voltage cables.

In general, as an example, an L-type connector is used as a connection connector for connecting high voltage cables located on both sides of the diaphragm. The conventional L-type connector is fixed to an outer surface of a partition wall or a partition plate to connect a high voltage cable located inside the partition plate with a high voltage cable located outside the partition plate.

However, in the conventional high-voltage cable connection connector, a high-voltage cable located inside the diaphragm is connected to the high-voltage connector through a through hole formed in the diaphragm while the connector for connection is fixed to the outer surface of the diaphragm.

Therefore, when a high voltage cable located inside the diaphragm is connected using a conventional connector for high voltage connection, the high voltage cable located inside the diaphragm passes through the through hole of the diaphragm, so that the high voltage cable and the diaphragm come close.

At this time, the high voltage cable is wrapped with an insulating coating, but when the diaphragm is made of a conductive metal, an arc or a short circuit occurs between the diaphragm and the high-voltage cable by a current induced from the high-voltage cable.

In addition, since these arcs and short circuits may cause fire or safety accidents, in order to prevent accidents, the space inside the diaphragm is filled with insulating gas to prevent arcs or short circuits from occurring.

For example, in an electrical room provided in a building, factory, or apartment, a switchboard is installed to receive high-voltage or extra-high voltage electricity supplied by a power company and distribute it to the load of each customer, and high-voltage cables leading to the outside of the switchboard are connected with high voltage. It is connected to the high voltage cable inside the switchboard through the connector.

Therefore, in order to safely connect the high voltage cables inside and outside the switchboard using the conventional connector for high voltage connection, the conventional switchboard must be insulated by filling it with insulating gas or other gas, so it is expensive. If the insulating gas leaks, it is a safety accident. There is a risk of lead. In addition, in recent years, as most of the materials used as insulating gas are found to be harmful to the environment, a new type of high voltage connection connector that can safely connect high voltage cables inside and outside the switchboard is required without using the insulating gas.

Thus, in order to solve the above problems in the near future, a certain distance is separated from the diaphragm by the left and right vertical portions of the insulating case of the high voltage connection connector, and the inner fastening rod on which the inner cable is installed is extended to be separated by a certain distance from the diaphragm. There has been proposed an end wall connector for high voltage cable connection that can prevent a fire or safety accident due to discharge even when the diaphragm is made of a conductive metal or is not filled with insulating gas in the internal space because it is wrapped with a bushing.

However, the connector structure as described above has a complex structure, and the connection time of the high-voltage cable is significantly delayed, and in particular, the outer cable simply forms a connection structure through the connection end. Due to its nature, there was a risk of being exposed to safety accidents.

In order to solve the above problems, a high voltage cable connection structure was developed, and the connection structure according to the prior art is installed on the outside of the diaphragm, and is bent inward at the tip to form a coupling hole communicating with the installation hole of the diaphragm in the center. A locking jaw with a plurality of through holes is formed, a first female thread is formed on the inner circumferential surface at the rear end, a second female thread is formed in the upper center, and an insulating stopper having a second male thread is fastened. An outer junction box through which the cable entry pipe through which the cable is inserted is formed, and a screw hole that is inserted from the rear of the outer junction box and communicates with the through hole of the locking jaw is formed at the rear end, and a coupling protrusion that is hooked and screwed into the locking jaw In front of the protrusion, it is composed of a coupling hole of the outer junction box and an extension part that is drawn out to the inner space through the installation hole of the diaphragm, and an inner connection port made of an insulator formed with a horizontal through hole in the form of a angular groove penetrating horizontally in the center, and an inner connection port. Through the horizontal through hole from the rear end of the front end, the front end protrudes into the inner space, the rear end protrudes into the inside of the outer junction box, and the front side is open to the side and the upper part of the proximal end to form a semicircular cable pressure groove for receiving the inner cable. At the rear, there is a horizontal connection rod in the form of a circular rod, a closing cap made of an insulator that is coupled to the end of the extension of the inner connection port to fix the inner cable, and the upper end of the outer connection box is supported by a stopper, and the outer cable is at the lower end. The outer connection member is fitted and connected to the circumference and a horizontal connection rod is connected, and a first male thread is formed on the outer circumference to fasten the first female thread of the outer connection box and close the rear end of the outer connection box, and a screw hole is formed horizontally through the center. It consists of an insulator closing member made of an insulator and an insulator that presses the circumference of the outer connecting member to the horizontal connecting rod side by screwing into the screw hole of the enclosure closing member and fastening force by forming a screw part on the outer circumference and a rotation adjusting groove in the center. It includes a pressing member.

The background technology of the present invention is disclosed in Korean Patent Publication No. 10-1742456 (announced on June 01, 2017, title of the invention: high voltage cable connection structure).

In the high-voltage cable connection structure according to the prior art, since the technical configuration for fixing the cable in a bolted connection method is combined or separated, the fastening operation can be completed only when the operator's manual or power tool is used when installing the cable, thus promoting the convenience of the operator. It is difficult to do, and there is a problem in that the operation for connecting the high-voltage cable is repeated for a certain time or longer, and a safety accident may occur as the high-voltage cable contacts the human body of the operator during the fastening operation.

Therefore, there is a need to improve this.

In the present invention, a cable can be connected indoors so that the cable does not come into contact with the human body of a worker without a separate fastening operation, and since a separate fastening operation for fixing the cable is omitted, a safety accident that may occur during the work of fixing the high voltage cable Its purpose is to provide a high-voltage cable connection device that can prevent this.

The present invention includes a case provided with a connection terminal to which an indoor cable is electrically connected, and installed on an indoor wall; A guide block installed through a wall from an outdoor side to be connected to the case and having a plurality of guide grooves; A cover member installed to be openable and closed on the guide block so as to simultaneously open or close the plurality of guide grooves; A fixing part for pressing the cable to be in close contact with the inner wall of the guide groove when the cable is inserted into the guide groove and the cover member is closed, the closing operation of the cover member is converted into a pressing operation and transmitted; A restraint connection part for restraining an end of the cable inserted into the case and electrically connecting it to the indoor cable; And a conversion transmission unit that converts the closing operation of the cover member and transmits it to the constraining operation of the constraining connection unit.

In addition, the cover member of the present invention includes a protruding shaft installed to be protruded along a central hole formed in a central portion of the guide block; A guide shaft extending from an inner end of the protruding shaft to an indoor side and connecting the conversion transmission unit to the inner end; A cover part extending in a circumferential direction from the protruding shaft, and opening or closing the guide groove when the protruding shaft is rotated forward or backward; And a rotation guide portion arranged to face the guide groove portion while rotating the projection shaft when the projection shaft is protruded or inserted from the guide block by an operator's operation, or spaced apart the guide groove portion and the cover portion. To do.

In addition, the fixing portion of the present invention, the receiving groove portion formed concave in the inner direction from the outer wall of the guide groove portion, forming a curved ring shape along the circumferential surface of the guide groove portion to form a storage space; A passage hole provided in the receiving groove to connect the receiving groove and the guide groove; And when the protruding shaft is inserted into the central hole and pressed by the inner end of the protruding shaft, the cable is protruded in the direction of the guide groove through the through hole and formed in a curved ring shape. It characterized in that it comprises a tube member that is fixed while pressing toward the cover member.

In the high voltage cable connection device according to the present invention, a guide block provided with a plurality of guide grooves is installed on a wall, and a cover member for opening or closing the plurality of guide grooves is installed without a separate fastening operation. When the cover member is closed after being inserted into the guide groove of the cable, the plurality of guide grooves are closed at the same time and a plurality of cables can be fixed at the same time, which facilitates the operator's convenience. It has the advantage of saving time and cost and preventing safety accidents.

In addition, the high-voltage cable connection device according to the present invention includes a fixing part for restraining the cable seated inside the guide groove part by interlocking with the closing operation of the cover member, so when the cover member is closed after the cable is seated in the guide groove part, the fixing part As the cable is prevented from flowing inside the guide groove by the operation of the cable, the separate work of fixing the cable can be omitted, and the cable is separated from the connection device as the cable flows by the vibration transmitted to the connection device, such as when an earthquake occurs. There is an advantage that can be prevented from being damaged or broken.

In addition, in the high voltage cable connection device according to the present invention, when the cover member is closed after inserting the end of the cable into the connection device, the closing operation of the cover member is converted into an operation of fixing the cable and electrically connecting it to the indoor cable. Therefore, it is possible to omit a separate connection work for connecting the outdoor cable and the indoor cable, thus promoting the convenience of the operator, and safety caused by the malfunction of connecting the indoor cable and the outdoor cable without cutting off the main power. There is an advantage that can effectively prevent accidents.

1 is a block diagram showing a high voltage cable connection device according to an embodiment of the present invention.
2 is an exploded perspective view showing a guide block and a cover member of a high voltage cable connection device according to an embodiment of the present invention.
3 is a cross-sectional view showing a guide block and a cover member of a high voltage cable connection device according to an embodiment of the present invention.
4 is an operational state diagram illustrating a high voltage cable connection device according to an embodiment of the present invention.

Hereinafter, an embodiment of a high voltage cable connection device according to the present invention will be described with reference to the accompanying drawings.

In this process, thicknesses of lines or sizes of components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, and may vary according to the intention or custom of users or operators.

Therefore, definitions of these terms should be made based on the contents throughout the present specification.

1 is a configuration diagram showing a high voltage cable connection device according to an embodiment of the present invention, Figure 2 is an exploded perspective view showing a guide block and a cover member of the high voltage cable connection device according to an embodiment of the present invention, 3 is a cross-sectional view showing a guide block and a cover member of a high voltage cable connection device according to an embodiment of the present invention, and FIG. 4 is an operational state diagram illustrating a high voltage cable connection device according to an embodiment of the present invention.

1 to 4, a high voltage cable connection device according to an embodiment of the present invention includes a connection terminal 76 to which an indoor cable is electrically connected, and a case 10 installed on an indoor wall surface And, it is installed through the wall from the outdoor side so as to be connected to the case 10, the guide block 12 having a plurality of guide grooves 16 and a plurality of guide grooves 16 can be opened or closed at the same time. When the cover member 30 is opened and closed to the guide block 12 so that the cable is inserted into the guide groove 16 and the cover member 30 is closed, the closing operation of the cover member 30 becomes a pressurizing operation. While being converted and transmitted, the fixing part 50 that presses the cable to be in close contact with the inner wall of the guide groove 16 and the end of the cable inserted into the case 10 are restrained and at the same time restraint electrically connected to the indoor cable It includes a connection part 70, and a conversion transmission unit 80 that converts the closing operation of the cover member 30 to transfer to the restraint operation of the restraint connector 70.

Therefore, the case 10 is disposed on the inner wall of the wall, and the guide block 12 connected to the case 10 passes through the wall and is installed so that it is exposed to the outer wall, and then the indoor cable is inserted into the case 10 for connection. After connecting to the terminal 76, inserting the outdoor cable along the guide groove 16 provided in the guide block 12, and then manipulating the cover member 30 to close the guide groove 16, the fixing part 50 ) Is fixed to the cable while being pressed toward the cover member 30 side, and the closing operation of the cover member 30 is converted to the operation of the conversion transmission unit 80 and transmitted, so that the end of the outdoor cable is It is fixed to be electrically connected to the end.

As described above, since the connection device according to the present embodiment can connect a high voltage cable to each other without a separate fastening member and fastening work, it is possible to prevent safety accidents that may occur during the fastening work, and It will save time and money.

The cover member 30 of the present embodiment includes a protruding shaft 32 protrudingly installed along a central hole 14 formed in the central portion of the guide block 12, and from the inner end of the protruding shaft 32 toward the interior. The guide shaft 34 is extended, and the conversion transmission unit is connected to the inner end thereof, and extends in the circumferential direction from the protruding shaft 32, and the guide groove 16 is opened when the protruding shaft 32 is rotated forward or backward. Alternatively, when the cover part 36 to be closed and the protruding shaft 32 by the operator's operation are projected or inserted from the guide block 12, the cover part 36 is inserted into the guide groove part 16 while rotating the protruding shaft 32. It includes a rotation guide portion 38 which is disposed opposite to or spaced apart the guide groove 16 and the cover 36.

Therefore, when the cover member 30 is protruded to the outside of the guide block 12 by the operator's operation, the protruding shaft 32 protrudes from the guide block 12 and rotates in the forward direction by the operation of the rotation guide unit 38. The guide groove 16 provided on the circumferential surface of the block 12 and closed by the cover member 30 is exposed and opened while being spaced apart from the cover member 30.

Thereafter, when the cable is inserted into the case 10 along the guide groove 16 and then inserted into the guide block 12 while rotating the cover member 30 in the reverse direction, the insertion movement of the cover member 30 is increased. The top portion 50 is driven to fix the cable seated in the guide groove 16 while pressing toward the cover member 30.

The cover part 36 of this embodiment is a curved surface that is connected to an outer end of a plurality of fixtures 36b extending radially from the top of the protruding shaft 32, and the outer end of the fixture 36b, and covering and closing the guide groove 16 It includes a curved portion (36a) formed in a panel shape.

Therefore, when the protruding shaft 32 protrudes to the outside of the guide block 12, the protruding shaft 32 is rotated by the operation of the rotation guide unit 38 and protrudes to the outside of the guide block 12, so that the curved curved part 36a becomes the guide groove part. While spaced apart from (16), the guide groove (16) is opened.

In addition, the rotation guide part 38 of this embodiment is formed in a spiral shape on the inner wall of the central hole 14 so that the guide protrusion 38a formed on the circumferential surface of the protruding shaft 32 and the guide protrusion 38a are inserted and slide It includes a spiral groove (38b).

Therefore, when the protrusion shaft 32 protrudes or is inserted from the guide block 12 by the tensioning work of the worker or the restoring force of the elastic member 84, the guidance protrusion 38a slides along the spiral groove 38b while the protrusion shaft ( 32) And while rotating the curved portion (36a) forward or reverse, the guide groove portion (16) and the curved portion (36a) are arranged to face each other or are spaced apart.

The fixing part 50 of this embodiment is formed concave inward from the outer wall of the guide groove 16, and is curved and bent in a ring shape along the circumferential surface of the guide groove 16 to form a storage space. 52, the through hole 54 provided in the receiving groove 52 to connect the receiving groove 52 and the guide groove 16, and accommodated in the receiving groove 52, and formed in a curved ring shape. When the protruding shaft is inserted into the central hole 14 and pressed by the inner end of the protruding shaft 32, it protrudes in the direction of the guide groove 16 through the passage hole 54 and the cable toward the cover member 30. It includes a tube member 56 fixed while pressing.

Here, the receiving groove 52 is formed in a ring shape that is bent in a curved shape close to a ring shape along the inner wall of the guide groove unit 16, and a passage connecting through the receiving groove unit 52 and the guide groove unit 16 The hole portion 54 is formed by continuous arrangement of a plurality of circular hole portions maintaining an interval.

Therefore, a portion of the tube member 56 protruding from the tube member 56 to the inside of the guide groove 16 through the through hole 54 is a plurality of protruding in the guide groove 16 from the receiving groove 52 It is made of a columnar tube member 56.

In addition, the guide shaft 34 of this embodiment has a smaller diameter compared to the projection shaft 32, so the jaw portion is formed between the projection shaft 32 and the guide shaft 34, and the inner wall of the central hole 14 The stepped part 18 on which the chin part is seated is formed, and the upper surface of the stepped part 18 is arranged to form the same plane as the bottom surface of the receiving groove part 52, so the rear surface of the tube member 56 inserted into the receiving groove part 52 The silver is disposed to extend to the upper surface of the stepped part 18 along the opening of the receiving groove part 52.

Therefore, when the protruding shaft 32 is inserted into the central hole 14 and the jaw portion is seated on the stepped portion 18, the jaw portion of the protruding shaft 32 presses the tube member 56, so that the inside of the tube member 56 As the working fluid to be filled moves in the direction inside the guide groove 16 through the through hole 54, a part of the tube member 56 protrudes in the guide groove 16, pressing the cable toward the cover member 30, and It is fixed.

The constraining connection part 70 of this embodiment is installed opposite to the inner end of the guide groove 16 in the case 10, and the end of the cable inserted into the case 10 is seated, and the connection terminal 76 The connecting rod 72 of the conductor provided with is rotatably installed at the inner end of the connecting rod 72, and when rotated by the operation of the conversion transmission unit 80, the end of the cable is moved in close contact with the connecting rod 72 It includes a restraint band 74 of insulating material to restrain.

Therefore, when the cable is inserted into the case 10 along the guide groove 16, the end of the cable is seated on the upper surface of the connecting rod 72, and when the cover member 30 is inserted into the guide block 12, the conversion transmission unit ( 80), the insertion temperature of the cover member 30 is converted into the rotational motion of the restraint table 74 and transmitted, so that the end of the connecting rod 72 and the end of the restraining table 74 are closely engaged with each other and the end of the cable And the connection terminal 76 provided on one side of the connection rod 72 and the connection rod 72 are electrically connected, so that an electric connection between the outdoor cable and the indoor cable is made.

The conversion transmission unit 80 of this embodiment is interposed between the support panel 82 installed at the inner end of the guide shaft 34, and the guide shaft 34 and the support panel 82 and the rear surface of the guide block 12. The support panel 82 is rotated toward the connecting rod 72 by converting the elastic member 84 that provides an elastic force to pressurize the case 10 in the inner direction of the case 10 and the protruding motion of the cover member 30. It includes a power supply unit 86 for performing the cable connection operation.

In addition, the power supply unit 86 of this embodiment is installed so as to be able to move forward or backward from the inside of the case 10 toward the guide block 12, the rack member 87 connected to the support panel 82, and the rack member A pinion member 88 that is gear-connected to 87 and converts the linear motion of the rack member 87 into rotational motion, and a conversion pinion 89 that is gear-connected to the pinion member 88 and converts the transmission of power. And, it includes a restraining gear portion (89a) provided at the inner end of the connecting rod 72 so as to be gear-connected with the conversion pinion (89).

Therefore, when the cover member 30 is inserted or protruded into the guide block 12, the guide shaft 34 is inserted or protruded into the case 10, and the rack member 87 moves forward or backward. In this case, the rack member The pinion member 88 connected to the gear 87, the conversion pinion 89, and the restraint gear portion 89a are operated to rotate the restraint 74 toward the linkage 72 and arrange it on one side of the linking bar 72 The end of the cable is fixed while pressing the end of the cable, and the indoor cable and the outdoor cable are electrically connected by a connection terminal 76 provided in the connection table 72 and a connection table 72 in which the cable is made of a conductor material.

Here, since the restraint table 74 is made of a non-conductive material through which electricity does not pass, the electric energy from the cable pressed by the restraint table 74 is prevented from being lost along the restraint table 74.

As a result, it is possible to connect the cable indoors so that the cable does not come into contact with the human body of the worker without a separate tightening operation.Since a separate tightening operation for fixing the cable is omitted, safety accidents that may occur during the operation of fixing the high voltage cable are avoided. It is possible to provide a preventable high voltage cable connection device.

The present invention has been described with reference to an embodiment shown in the drawings, but this is only exemplary, and various modifications and other equivalent embodiments are possible from those of ordinary skill in the field to which the technology belongs. Will understand.

In addition, although the high voltage cable connection device has been described as an example, this is only exemplary, and the connection device of the present invention may be used for other products other than the high voltage cable connection device.

Therefore, the true technical protection scope of the present invention should be determined by the following claims.

10: case 12: guide block
14: central hole 16: guide groove
18: stepped portion 30: cover member
32: Appearance shaft 34: Guide shaft
36: cover portion 36a: curved portion
36b: connecting rod 38: rotation induction part
38a: guide protrusion 38b: spiral groove
50: fixed part 52: storage groove
54: through hole 56: tube member
70: restraint connection 72: connecting rod
74: restraint zone 76: connection terminal
80: conversion transmission unit 82: support panel
84: elastic member 86: power supply unit
87: rack member 88: pinion member
89: conversion pinion 89a: restraint gear

Claims (3)

A case provided with a connection terminal to which an indoor cable is electrically connected, and installed on an indoor wall;
A guide block installed through a wall from an outdoor side to be connected to the case and having a plurality of guide grooves;
A cover member installed to be openable and closed on the guide block so as to simultaneously open or close the plurality of guide grooves;
A fixing part for pressing the cable to be in close contact with the inner wall of the guide groove when the cable is inserted into the guide groove and the cover member is closed, the closing operation of the cover member is converted into a pressing operation and transmitted;
A restraining connection part for restraining an end of the cable inserted into the case and electrically connecting it to the indoor cable; And
It includes a conversion transmission unit for converting the closing operation of the cover member to transfer to the restraint operation of the restraint connection,
The cover member,
A protruding shaft installed to protrude along a central hole formed in a central portion of the guide block;
A guide shaft extending from an inner end of the protruding shaft to an indoor side and to which the conversion transmission unit is connected to the inner end;
And a cover portion extending from the projection shaft in a circumferential direction and opening or closing the guide groove when the projection shaft rotates forward or reverse.
The method of claim 1, wherein the cover member,
When the projection shaft is protruded or inserted from the guide block by an operator's operation, the lid portion is disposed to face the guide groove while rotating the projection shaft, or a rotation guide portion further comprises a rotation guide portion for separating the guide groove from the cover portion. High voltage cable connection device.
The method of claim 1, wherein the fixing part,
An accommodating groove formed concave inward from an outer wall of the guide groove and curved in a ring shape along a circumferential surface of the guide groove to form a storage space;
A passage hole provided in the receiving groove to connect the receiving groove and the guide groove; And
It is accommodated in the receiving groove and formed in a curved ring shape, so that when the protruding shaft is inserted into the central hole and pressed by the inner end of the protruding shaft, the cable is protruded in the direction inside the guide groove through the through hole. A high-voltage cable connecting device comprising a tube member that is fixed while pressing toward the cover member.

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