KR200452768Y1 - Apparatus for Connecting Earth-wire to Cylindrical Earth-Structure - Google Patents

Abstract

The ground wire connecting device for the cylindrical grounding body according to the present invention, the 'c' shaped frame having an opening at the bottom, disposed inside the frame, the plate-shaped grounding piece is connected to the ground wire and the grounding piece to the frame It is characterized in that it comprises a pressing member for contacting the ground piece to the outer peripheral surface of the cylindrical ground body inserted into the opening by pressing in the opening direction of the.

The ground wire connecting device for the cylindrical grounding body according to the present invention is a method of fixing the grounding wire connecting device on the outer circumferential surface of the cylindrical grounding body and is easy to install compared to the prior art, and firmly ground wire by bolt coupling Because of the connection method, it is possible to improve the reliability of the connection between the grounding body and the grounding wire even when an external impact occurs during construction.

Ground Wire, Connector, Cylindrical Ground

Description

Ground wire connecting device for cylindrical grounding body {Apparatus for Connecting Earth-wire to Cylindrical Earth-Structure}

The present invention relates to a connecting device for connecting a ground wire to a protective conductor used as a grounding electrode. More specifically, when using a circular metal pipe such as a water pipe or a gas pipe as a protective conductor, the ground wire is easily connected to the metal pipe. The present invention relates to a ground wire connecting device for a cylindrical grounding body.

In general, ground means to electrically connect an electrical equipment system such as an electronic device, a communication device, a measuring device, etc. to the ground, and to send a surge voltage flowing into the electrical equipment system due to an overload or a lightning strike to the ground. As a result, the electrical installation system can maintain a stable operation by preventing a fatal damage or malfunction of an important part even when a surge voltage is introduced.

In order to form a grounding system as described above, conventionally, one or a plurality of grounding electrodes configured to have a low electrical resistance with respect to the earth is embedded in the ground, and the grounding electrode and the electrical installation system are electrically connected using grounding wires. The connection method was often used.

At this time, the ground electrode and the ground line is connected by a ground line connecting device provided separately, a specific configuration for such a ground line connecting device is disclosed in detail in Document 1.

However, since the ground wire connecting device according to the prior art is a method of connecting the ground wire and the cylindrical ground body (that is, the ground rod) by using the creep during the construction of the grounding system and then embeding them in the ground, the external impact during the embedding process Due to this, there is a problem in that the grounding system becomes ineffective due to separation of the ground wire from the grounding body or loosening of mutual contact.

In addition, the ground wire connecting device according to the prior art as described above is a way to be inserted from the top of the grounding body when the construction of the grounding system is not easy to install when the length of the grounding body, as well as the circular metal already installed in the building, etc. There is a problem in that a grounding system using a pipe or the like as a grounding electrode cannot be used.

In addition, as IEC 60364 is recently introduced as a standard for electrical installations, a method of using a metal pipe such as a water pipe or a gas pipe that is already installed in a building, etc., in addition to the conventional buried ground electrode is emerging. The problem of the prior art is a situation that is further aggravated.

[Document 1] Korean Utility Model Model No. 2000-0005133 (Published March 15, 2000)

The present invention is to solve the problems of the prior art as described above, in the case of using a cylindrical grounding body as a grounding electrode, it is easy to install the grounding system and can improve the reliability of the connection of the grounding wire and the grounding body during construction It is to provide a ground wire connection device for a cylindrical ground body.

In addition, the present invention can be connected to the ground wire in the desired position even if a metal pipe such as a water pipe or gas pipe already installed in the building as a grounding electrode in the cylindrical grounding body that can further enhance the ease of construction To provide a ground wire connection device for.

In addition, the present invention provides a grounding wire connecting device for a cylindrical grounding body that can prevent the connection of the grounding wire from being damaged or a safety accident caused by another work or worker when the grounding wire is connected to the grounding electrode exposed to the outside. It is to.

In order to achieve the above object, a grounding wire connecting device for a cylindrical grounding body according to the present invention includes a frame having an opening at the bottom of a 'c' shape, a plate-shaped grounding piece disposed inside the frame, and connected with a grounding wire; And a pressing member which presses the grounding piece in an opening direction of the frame to contact the grounding piece with an outer circumferential surface of the cylindrical grounding body inserted into the opening.

In addition, a protrusion-shaped stopper is formed on inner surfaces of both panels of the frame to prevent the ground piece and the cylindrical ground body from being separated in the opening direction of the frame.

In addition, the pressing member is a first bolt that is fastened to the first coupling hole formed through the upper panel of the frame facing the opening, and a nut interposed between the first bolt and the upper panel to fix the first bolt. Characterized in that configured.

In addition, the pressing member is characterized in that the one end is an elastic member that is fixed to the lower surface of the frame upper panel facing the opening.

In addition, the ground piece is extended so that the bottom surface is in contact with the outer peripheral surface of the cylindrical ground body and one end is bent in the opposite direction of the opening and inclined in the opposite direction of the opening from the other end of the ground panel And a ground line connecting panel having a ground line connecting portion formed at an end thereof, wherein the ground line connecting portion is positioned outside the frame.

In addition, the lower surface of the ground panel is characterized in that it is graded to correspond to the outer peripheral surface of the cylindrical ground body in contact.

In addition, the ground line connecting portion is a second coupling formed through the end of the ground line connecting panel which is opposite to the opening, the ground line fixing panel facing the end of the ground line connecting panel, and the end of the ground line connecting panel and the ground line fixing panel respectively. And a second bolt fastened to the ball, wherein the ground wire is interposed between the end of the ground wire connection panel and the ground wire fixing panel to be in close contact with the ground piece by fastening the second bolt.

In addition, both sides of the end of the ground wire connection panel is characterized in that the projections projecting in the vertical direction, respectively.

In addition, in order to prevent the ground wire connected to the ground line connection portion is separated from the upper surface of the end of the ground line connection panel and the bottom surface of the ground line fixing panel is characterized in that the uneven structure or embossing structure is formed.

The apparatus may further include a thin film strip-shaped label attaching member interposed between the ground panel and the upper panel of the frame facing the opening through through holes formed in both panels of the frame. It is bent along the outer surface and the bottom surface of one side of the frame, the other end is characterized in that it protrudes to the outside of the other side of the frame to be fitted with the marker patch on the outside of the frame.

As described above, the grounding wire connecting device for the cylindrical grounding body according to the present invention is a method of fixing the grounding wire connecting device on the outer circumferential surface of the cylindrical grounding body and is easy to install in comparison with the prior art, and also bolt coupling Since the ground wire is firmly connected to the ground wire, there is an advantage that the reliability of the connection between the ground body and the ground wire can be improved even when an external impact occurs during construction.

In addition, the present invention has the advantage that even when using a metal pipe, such as water pipes or gas pipes already installed in the building as the grounding electrode can be connected to the ground wire at the desired position further enhance the ease of construction. .

In addition, the present invention is a configuration that can be attached to the grounding wire connecting device, so when the grounding wire is connected to the grounding electrode exposed to the outside is damaged by the connection or connection of the grounding wire by other operations or workers There is an advantage that can be prevented in advance.

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

( First embodiment )

1 is a perspective view showing a state in which the ground wire connection device for the cylindrical ground body according to the first embodiment of the present invention is coupled to the ground body, Figure 2 is an exploded perspective view showing the ground wire connection device of Figure 1, Figure 3 4 is a front view of the ground wire connector of FIG. 1, and FIG. 4 is a cross-sectional view of AA of the ground wire connector of FIG.

The ground wire connecting device 1 for the cylindrical grounding body according to the present embodiment is a frame 10 having a '11' shape having an opening 11 at the bottom thereof, and the ground wire 50 is disposed inside the frame 10. A plate-shaped ground piece 20 to be connected, a first bolt 14 fastened to the first coupling hole 13 formed through the upper panel 12 of the frame 20 facing the opening 11 and the It is composed of a nut 15 interposed between the first bolt 14 and the upper panel 12 to fix the first bolt 14.

In addition, the inner side surfaces of both panels 16 and 17 of the frame 10 prevent the ground piece 20 and the cylindrical ground body 30 from being separated in the direction of the opening 11 of the frame 10. Protruding stoppers 18 are formed, respectively.

In addition, the ground piece 20 is a conductive metal plate having a predetermined thickness disposed to face the opening 11 in the frame 10, and the ground piece 20 can be easily formed in a direction parallel to the opening 11. In order to prevent deviation, the width is preferably configured to be about the same as the width between the two panels 16 and 17 of the frame 10.

In addition, when the ground piece 20 is in close contact with the cylindrical ground body 30 by the fastening force of the first bolt 14 as described below, contact with the ground body by deformation by external force (for example, fastening force, etc.). It is preferable that it is constituted so thick that it is possible to prevent this fault from being increased.

When the ground wire connecting device 1 of the present invention having the configuration as described above is coupled to the cylindrical ground body 30, the operator first according to the present invention to the outer peripheral surface of the cylindrical ground body 30 through the opening (11) Insert the ground wire connector (1).

At this time, the cylindrical ground body 30 is forcibly fitted into the frame 10 by the strip-shaped stoppers 18 formed on both panels 16 and 17 of the frame 10, and as described below, When the ground piece 20 is pressed in the direction of the opening 11 by the fastening force of the first bolt 14, the ground piece 20 and the cylindrical ground body 30 are prevented from being separated in the direction of the opening 11. Done.

In this embodiment, the case where the stopper 18 formed on each of the side panels 16 and 17 of the frame 10 has a band shape is described as an example, but may be configured as one or a plurality of protrusions as necessary.

Next, the worker fastens the ground bolt 20 in the direction of the opening 11 which is the traveling direction of the first bolt 14 by fastening the first bolt 14 to the first coupling hole 13 by screwing. The ground piece 20 is in close contact with the outer circumferential surface of the cylindrical ground body 30 by being pressed down, thereby contacting the ground wire 50 and the ground piece 20 to which the ground wire 50 is connected, and the cylindrical ground body 30. ) Are electrically connected to form a grounding system.

In this case, in order to reduce the ground resistance, it is preferable to form the lower surface of the ground piece 20 in contact with the outer circumferential surface of the cylindrical ground body 30 in a curved shape rather than a flat surface. In this embodiment, the ground piece 20 is an example. The lower surface of is configured to be gradient to the curvature corresponding to the shape of the outer peripheral surface of the cylindrical ground body (30).

As described above, when the ground piece 20 comes into contact with the cylindrical ground body 30, the worker fixes the position of the first bolt 14 by using the nut 15. It is possible to prevent the ground resistance from increasing due to a poor contact between the ground piece 20 and the cylindrical ground body 30 due to the loosening of 14).

As described above, the grounding wire connecting device for the cylindrical grounding body according to the present embodiment is a method of fixing the grounding wire connecting device to the outer circumferential surface of the cylindrical grounding body and is easy to install in comparison with the prior art, and to the building Even when a metal pipe such as a water pipe or a gas pipe that is already installed is used as a ground electrode, an operator can connect the ground wire at a desired position, thereby improving the ease of construction.

Meanwhile, the ground piece 20 may include a ground panel 22 having a lower surface in contact with an outer circumferential surface of the cylindrical ground body and one end 21 bent in a direction opposite to the opening 11, and the ground panel ( 22 is formed to extend from the other end of the inclined direction in the opposite direction of the opening 11 and includes a ground line connecting panel 24 having a ground line connecting portion 40 at the end 23.

At this time, the lower surface of the ground panel 22 is preferably made of a curved surface corresponding to the shape of the cylindrical ground body 30 for the reasons described above.

In addition, one end 21 of the ground panel 22 is bent in a direction opposite to the opening 11, preferably vertically, which is in contact with the inner surfaces of the panels 16, 17 on both sides of the frame 10. The ground piece 20 is parallel to the opening 11 of the frame 10 in a single state in which the ground wire connecting device 1 is not connected to the ground body 30 by increasing the contact area with the ground piece 20. It can be easily prevented from leaving.

In addition, the ground wire connecting portion 40 is preferably configured to extend inclined in the opposite direction to the opening 11 of the frame 10 and to be located outside the frame 10, which will be described later, screwing type When connecting the ground wire 50 in order to prevent the interference with the frame 10 and the cylindrical ground body 30 to facilitate the work of the operator.

In addition, the ground line connecting portion 40 is an end 23 of the ground line connecting panel which is a plane facing the opening 11, a ground line fixing panel 41 facing the end 23 of the ground line connecting panel, and the ground line And a second bolt 43 fastened to the second coupling hole 42 formed through the end 23 of the connection panel and the ground line fixing panel 41, respectively.

In the above configuration, the operator interposes the ground wire 50 between the end 23 of the ground wire connecting panel and the ground wire fixing panel 41, and then the second bolt 43 to the second coupling hole 42. The ground wire 50 is brought into close contact with the ground piece 20 by the fastening force of the second bolt 43 by fastening to the ground wire 50 and the ground piece 20 to which the ground wire 50 and the ground wire 50 are connected as described above. Retardation 30 forms an electrically connected grounding system.

At this time, if necessary, the upper surface of the ground wire connecting panel end 23 through which the ground wire 50 is interposed, and the bottom surface of the ground wire fixing panel 41 is an embossed or convex shape that is interlocked with each other up and down like an uneven structure (not shown) By increasing the contact area with the ground line 50 by configuring the time, it is possible to further prevent the ground line 50 connected to the ground line connection portion 40 is separated by an external force.

In addition, the projections 25 protruding in the vertical direction are formed on both sides of the ground wire connection panel end 23, respectively, so that the ground wire fixing panel 41 rotates in the fastening direction when the second bolt 43 is fastened. You can prevent it.

As described above, since the grounding wire connecting device for the cylindrical grounding body according to the present invention is a method of firmly connecting the grounding wire by bolt coupling, the reliability of the connection between the grounding body and the grounding wire is improved even when an external impact occurs during construction. The advantage is that you can.

On the other hand, the ground wire connection device 1 according to the present embodiment of the frame 10 facing the opening 11 through the through holes 19 formed in the side panels 16, 17 of the frame 10, respectively The apparatus may further include a mark attachment member 60 having a thin film strip shape interposed between the upper panel 12 and the ground piece 20.

At this time, one end (60a) of the marker attaching member 60 is bent and fixed along the outer surface and the bottom surface of the one side panel 17 of the frame 10, the ground wire connection device 1 according to the present invention is grounded It is possible to prevent the marker attaching member 60 from being easily separated from the frame 10 through the through hole 19 in a single state not connected to the 30.

In addition, the other end (60b) of the marker attaching member 60 is a band (that is, the outer side of the frame 16, the other side panel 16) so that the marker patch 70 can be fitted from the outside of the frame (10) Strip) protrudes into a shape, and the marking tag 70 is used to prevent the grounding system from being damaged or an electric shock due to other work after installation of the grounding system, such as 'safety sign' or 'warning sign'. Means a patrol containing a message.

In addition, the grounding member 20 is a cylindrical ground body by the first bolt 14 in a state interposed between the upper panel 12 and the grounding piece 20 of the frame 10. When in close contact with (30), it is preferable that the fastening force by the first bolt 14 is made of a thin film so thin that it can be transferred to the ground piece 20 well.

As described above, the present invention is a configuration that can attach a safety mark to the ground wire connection device, when the ground wire is connected to the ground electrode exposed to the outside is damaged or the connection part of the ground wire by other workers or workers There is an advantage that can prevent accidents in advance.

( Second embodiment )

5 is a cross-sectional view showing a state in which the ground wire connecting device for the cylindrical grounding body according to the second embodiment of the present invention is coupled to the grounding body, and the same reference numerals are assigned to the same components as those of the first embodiment described above. And duplicate descriptions are omitted.

In the ground wire connecting device 1 according to the present embodiment, the pressing force for pressing the ground piece 20 to closely contact the cylindrical ground member 30 and the ground piece 20 is not a fastening force of the bolt but an elastic force of the elastic member. It differs from the first embodiment described above in that it is applied.

In the ground wire connecting device 1 according to the present exemplary embodiment, a fixing protrusion 115 is formed on a lower surface of the frame upper panel 12 facing the opening 11, and the upper panel 12 and the ground piece ( 20 is interposed between the spring 114, one end of which is fixed to the fixing protrusion 115.

By such a configuration, when the cylindrical ground body 30 is forcibly fitted to the frame 10 as described above, the spring 114 is compressed to press the ground piece 20 toward the opening 11. Will work.

At this time, in order to prevent the ground resistance from increasing due to a poor contact between the ground piece 20 and the cylindrical ground body 30, the spring 114 is in close contact between the ground piece 20 and the cylindrical ground body 30. It is preferable to be selected to have a compression force that can maintain the.

In this embodiment, the case in which the ground piece 20 is pressed by the coil spring 114 is described as an example. However, the present invention is not limited thereto, and various elastic members such as leaf springs are preferably used within the range of performing the same action. Of course, it can be implemented.

In this embodiment, the spring is fixed to the fixing protrusion 115 formed on the lower surface of the frame upper panel 12 as an example, but the fixing groove on the lower surface of the frame upper panel 12 as needed. It may be configured so that one end of the elastic member is fixed to the fixing groove.

The cylindrical grounding body applied in the first and second embodiments described above has been described with reference to a common grounding rod made of a cylindrical shape, but a water pipe, a gas pipe, or the like may be used as the grounding body.

1 is a perspective view showing a state in which the ground wire connecting device for the cylindrical grounding body according to the first embodiment of the present invention is coupled to the cylindrical grounding body,

Figure 2 is an exploded perspective view showing a ground wire connection device of Figure 1,

Figure 3 is a front view showing the ground wire connection device of Figure 1,

4 is a cross-sectional view taken along line A-A of the ground wire connection device of FIG.

5 is a cross-sectional view showing a state in which the ground wire connection device for the cylindrical grounding body according to the second embodiment of the present invention is coupled to the cylindrical grounding body.

Claims (10)

'C' shaped frame having an opening at the bottom; A plate-like ground piece disposed inside the frame and to which a ground line is connected; And A pressing member which presses the grounding piece in an opening direction of the frame to contact the grounding piece with an outer circumferential surface of the cylindrical grounding body inserted into the opening; On the inner side of the panel of the both sides of the frame ground wire connecting device for the cylindrical grounding body, characterized in that the stopper of the projection shape to prevent the grounding piece and the cylindrical grounding body to be separated in the opening direction of the frame, respectively. delete The method of claim 1, The pressing member is a first bolt fastened to the first coupling hole formed in the upper panel of the frame facing the opening; And, The ground wire connection device for the cylindrical ground body, characterized in that consisting of a nut which is interposed between the first bolt and the upper panel to fix the first bolt. The method of claim 1, And the pressing member is an elastic member having one end fixed to a lower surface of a frame upper panel facing the opening. The method according to any one of claims 1 to 3, The grounding piece may include a grounding panel having a lower surface contacting an outer circumferential surface of the cylindrical grounding body and one end of which is bent in a direction opposite to the opening; And a ground wire connection panel extending from the other end of the ground panel to be inclined in the opposite direction of the opening and having a ground wire connection portion at an end thereof. The ground wire connection device for a cylindrical ground body, characterized in that the ground wire connection portion is located outside the frame. The method of claim 5, A ground wire connecting device for the cylindrical ground body, characterized in that the lower surface of the ground panel is graded to correspond to the outer peripheral surface of the cylindrical ground body in contact. The method of claim 5, The ground line connecting portion may be formed in an end portion of the ground line connecting panel which is opposite to the opening, a ground line fixing panel facing the end of the ground line connecting panel, and a second coupling hole formed through the end of the ground line connecting panel and the ground line fixing panel, respectively. Including a second bolt to be fastened, And the ground wire is interposed between the end of the ground wire connection panel and the ground wire fixing panel to be in close contact with the ground piece by fastening the second bolt. The method of claim 7, wherein Both sides of the end of the ground wire connection panel is connected to the ground wire connection device for a cylindrical ground body, characterized in that a protrusion for preventing the ground wire fixing panel from rotating when the second bolt is fastened in a vertical direction formed. The method of claim 7, wherein In order to prevent the ground wire connected to the ground wire connection portion is separated from the ground wire connecting device for the cylindrical ground body, characterized in that the concave-convex structure or embossed structure is formed on the upper surface of the end of the ground wire connection panel and the bottom of the ground wire fixing panel. The method according to any one of claims 1, 3, and 4, Further comprising a thin film strip-shaped label attachment member interposed between the ground panel and the upper panel of the frame facing the opening through through holes formed in each side panel of the frame, One end of the marker attaching member is bent along the outer surface and the bottom surface of the one side panel of the frame, the other end is cylindrical, characterized in that protruding to the outside of the other side of the frame to be fitted with the marker for the plaque outside the frame Ground wire connection to earth ground.

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