Ground rod

Abstract

To provide a ground rod that is electrically connected to the ground and serves as a terminal, and more particularly, provides a ground rod that can be easily and conveniently buried in the ground without being hit and through which a ground wire can be smoothly routed.SOLUTION: A ground rod 100 according to the present invention includes: a rod body 110 having a head portion 111 formed at a top thereof and a sharp portion 112 formed at a bottom thereof; a bending connector 120 formed of a pipe bent in an "L" shape, with both ends being open to allow a ground wire C to pass therethrough, and welded horizontally to a side of the rod body 110; and fixing means for fixing the ground wire C having passed through the inside of the bending connector 120 to the bending connector 120. In addition, a spiral protrusion 114 is formed in the vertical direction along an outer circumferential surface of the rod body 110, such that the rod body 110 can be buried in the ground very easily and simply by being rotated without being hit, and it is also effective in preventing damage to the rod body 110 that may occur during the hitting process of the rod body 110.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a ground rod that is electrically connected to the ground and serves as a terminal, and relates to a ground rod that can be easily and conveniently buried in the ground without striking it and through which a ground wire can be smoothly routed. [Background technology]

[0002] In general, a ground rod has a structure in which a steel core bundle is coated with copper, allowing current to flow along the steel core, and the ground wires of various electrical devices and machines are electrically connected and fixed to the ground rod, thereby passing abnormal currents generated in the various electrical products and machines to the ground, thereby grounding them.

[0003] Fig. 1 is a perspective view of a typical ground rod. As shown in the figure, a conventional ground rod 10 is composed of a rod body 11 and a tubular connector 12 that is welded to the upper end of the rod body and crimped with a part of a ground wire 13 inserted inside.

[0004] In this ground rod 10, the tubular connector 12 is welded to the rod body 11 to be attached as one body, the ground wire 13 is inserted into the tubular connector 12, and the tubular connector 12 is crimped to firmly fix the ground wire 13 to the tubular connector 12. In this state, the upper end of the rod body 11 is struck with a striking device such as a hammer to bury it in the ground to a certain depth, thereby completing the installation.

[0005] However, in the case of the conventional ground rod 10 as described above, when the ground rod 10 is buried in the ground, the rod body 11 must be struck with a hammer, which not only requires a lot of labor from the worker, but also causes the upper end of the rod body 11 to be crushed or the rod body 11 to bend if the strike is made in the wrong direction.

[0006] Furthermore, in order to effectively reduce the resistance value, conventional ground rods 10 are usually arranged in a triangle at intervals of 2 m, and then a ground wire 13 is installed to pass through each ground rod 10.

[0007] However, in the past, the ground wire 13 was passed through the ground rod 10 by passing through the vertically installed tubular connector 12, but in the process, the ground wire 13 was easily bent, making it very difficult to pass the ground wire 13 through the ground rod 10. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Korean Patent No. 10-2364894 Summary of the Invention [Problem to be solved by the invention]

[0009] The present invention has been devised to solve the above-mentioned problems, and aims to provide a ground rod which can be easily and simply buried in the ground without striking the rod body, and which also allows the ground wire to be smoothly routed through it. [Means for solving the problem]

[0010] In order to achieve the above object, the ground rod of the present invention includes a rod body having a head portion formed at an upper end and a sharp portion formed at a lower end, a bending connector consisting of a pipe bent into an "L" shape and open at both ends so that a ground wire can pass through it, and welded horizontally to the side of the rod body, and a fixing means for fixing the ground wire passing through the inside of the bending connector to the bending connector.

[0011] In addition, a spiral protrusion may be formed in the vertical direction along the outer circumferential surface of the rod body.

[0012] Also, the head portion may be polygonal in shape corresponding to the shape of the socket so that it can be inserted into the socket assembled to the power tool.

[0013] The pointed portion may also be a non-right circular cone having a cross section that forms a right triangle.

[0014] The fixing means may also be crimped portions formed on both ends of the bending connector.

[0015] The fixing means may include screw holes formed on both ends of the bending connector, and fastening bolts fastened to the screw holes and tightly attached to the ground wire. Effect of the Invention

[0016] The ground rod of the present invention constructed as described above has a tubular bending connector with open ends welded horizontally to the side of the rod body so that the ground wire can pass through it. Therefore, unlike the conventional method, the ground wire does not bend excessively in the process of passing through the ground rod, and the ground wire can be installed very easily on the ground rod.

[0017] In addition, in the case where a spiral protrusion is formed in the vertical direction on the rod, the present invention not only makes it possible to bury the rod in the ground very easily and simply by rotating the rod without striking it unlike the conventional method, but also has the effect of preventing damage to the rod that occurs during the process of striking the rod.

[0018] Furthermore, in the present invention, when the head portion of the rod body is polygonal, the head portion can be inserted into a socket assembled to the power tool, so that the rod body can be easily and quickly rotated with the power tool to easily carry out the burying work. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a perspective view of a conventional ground rod. [Diagram 2] FIG. 1 is a perspective view of a ground rod according to the present invention. [Diagram 3] FIG. 2 is a plan view showing a state in which the ground rod according to the present invention is used. [Figure 4] FIG. 2 is a cross-sectional view showing the installed state of the ground rod according to the present invention. [Diagram 5] FIG. 2 is a cross-sectional plan view showing a state in which the ground rod according to the present invention is used. [Figure 6]FIG. 11 is a cross-sectional plan view showing a state in which another embodiment of the fixing means constituting the present invention is used. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] The features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments taken in conjunction with the accompanying drawings.

[0021] Prior to a detailed description of the present invention, the terms and words used in this specification and claims should be interpreted in a manner consistent with the technical concept of the present invention, based on the principle that the inventor can appropriately define the concept of the terms in order to best describe his / her invention.

[0022] Furthermore, the terms and words used in the present specification and claims are merely used to describe particular embodiments and are not intended to limit the present invention.

[0023] For example, the singular term includes the plural term unless the context clearly dictates otherwise. Furthermore, the terms "comprise", "comprise", "have", and the like are intended to specify the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0024] Furthermore, when a layer, film, region, plate, or other part is said to be "on" another part, this includes not only when it is "directly on" the other part, but also when there is another part in between. Conversely, when a layer, film, region, plate, or other part is said to be "under" another part, this includes not only when it is "directly under" the other part, but also when there is another part in between.

[0025] Furthermore, although terms including ordinal numbers such as "first," "second," etc., used in this specification may be used to describe various components, the components are not limited to these terms, and these terms are used only to distinguish one component from another.

[0026] Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. Hereinafter, the same components will be denoted by the same reference numerals, and for the sake of clarity, only the different parts will be mainly described to avoid duplication as much as possible.

[0027] Fig. 2 is a perspective view of the ground rod according to the present invention, Fig. 3 is a plan view showing the state of use of the ground rod according to the present invention, Fig. 4 is a cross-sectional view showing the state of installation of the ground rod according to the present invention, and Fig. 5 is a cross-sectional plan view showing the state of use of the ground rod according to the present invention. As shown in the figures, the ground rod 100 according to the present invention includes a rod body 110, a bending connector 120, and a fixing means.

[0028] The rod 110 is a cylindrical member made of a steel core bundle covered with a conductive material such as copper, and is buried in the ground to a certain depth.

[0029] The rod body 110 has a head portion 111 formed at its upper end and a sharp tip portion 112 formed at its lower end.

[0030] The head portion 111 is coupled with an electric tool T for rotating the rod body 110 so that the rod body 110 can be easily inserted into the ground.

[0031] In this case, the head portion 111 may be formed in a polygonal shape corresponding to the shape of the socket S so that the head portion 111 can be smoothly inserted into the socket S assembled to the power tool T. In the present embodiment, the head portion 111 is formed in a quadrangle, but is not limited thereto, and may be formed in various shapes such as a hexagon or octagon according to the shape of the socket S.

[0032] The pointed portion 112 is formed to be converging downward so that the rod body 110 can be smoothly inserted into the ground.

[0033] The pointed portion 112 may be formed in a right circular cone shape with both sides inclined symmetrically so as to converge to the center of the rod body 110, or may be formed in a non-right circular cone shape in which the line segment connecting the apex of the cone and the center of the base of the cone is not perpendicular to the base of the cone.

[0034] When the pointed portion 112 is formed in a non-right circular cone shape, the contact resistance with the ground when the rod body 110 rotates is reduced compared to a right circular cone shape, and the ground is excavated in a circular shape during rotation, so that the rod body 110 can be more easily buried in the ground to a certain depth.

[0035] Considering this, it is preferable that the tip 112 is formed in a non-right circular cone shape inclined only to one side so that the tip 112 can excavate the ground to a diameter corresponding to the thickness of the rod body 110 .

[0036] Furthermore, the rod body 110 may have a helical protrusion 114 formed in the upward and downward directions along the outer circumferential surface.

[0037] When the spiral protrusion 114 is formed on the rod 110, the soil generated during the excavation process is discharged to the ground along the spiral protrusion 114, so that the rod 110 can be quickly buried in the ground. The spiral protrusion 114 increases the bonding force between the rod 110 and the ground, so that the rod 110 can be more firmly buried in the ground to a certain depth, and the ground contact area is increased, thereby improving the discharge efficiency.

[0038] The bending connector 120 is a pipe with both ends open, and is welded horizontally to the side of the rod body 110 .

[0039] The bending connector 120 has an inner diameter larger than the diameter of the ground wire C so that the ground wire C can pass smoothly through the inside.

[0040] Furthermore, the bending connector 120 is bent in an "L" shape so that the ground wire C passing through the inside faces the other ground rod 100. In this case, the bending angle of the bending connector 120 does not need to be particularly limited, and it is possible to select and apply a bending connector bent at an appropriate angle depending on the installation position of the other ground rod 100.

[0041] Meanwhile, the ground wire C passing through the inside of the bending connector 120 is firmly fixed to the bending connector 120 by a fixing means.

[0042] In this case, the fixing means may be crimping portions 121 formed on both ends of the bending connector 120. The crimping portions 121 are formed at the work site by a crimping tool only if the bending connector 120 is made of a metal material.

[0043] As shown in FIG. 6, the fixing means may be comprised of screw holes 122 formed on both ends of the bending connector 120 and fastening bolts 123 fastened to the screw holes 122 and tightly attached to the ground wire C.

[0044] In this case, there is no need to form the crimped portion 121 with a crimping tool at the work site, which has the advantage that the ground wire C can be fixed more easily.

[0045] The ground rod 100 of the present invention constructed as above is buried in the ground to a certain depth in the following manner.

[0046] First, the rod body 110 is set vertically on the ground at the grounding position, and then the socket S assembled to the power tool T is fitted onto the head portion 111 of the rod body 110.

[0047] The head portion 111 of the rod body 110 is polygonal so that it can be smoothly inserted into the socket S.

[0048] When the head portion 111 of the rod body 110 is inserted into the socket S, the power tool T is operated.

[0049] In this way, the rod 110 starts to be embedded in the ground while rotating, and when it is embedded to a certain depth, the operation of the power tool T is stopped. Therefore, the operator can quickly and easily embed the rod 110 in the ground to a certain depth using the power tool T without striking the rod 110.

[0050] Here, the rod 110 is embedded in the ground more quickly due to the sharp tip 112 at the lower end of the rod 110. When the spiral protrusion 114 is formed in the vertical direction along the outer circumferential surface of the rod 110, a strong digging force is applied to the rod 110, so that the rod 110 is embedded in the ground more quickly, and the bonding strength with the ground is significantly improved, as well as the discharge efficiency is significantly improved.

[0051] In this manner, the ground rods 100 are buried in the ground in a triangular pattern at intervals of 2 m.

[0052] After the ground rods 100 are completely buried, the ground wires C are passed through the bending connectors 120 attached to the rod bodies 110 of the respective ground rods 100 in sequence.

[0053] Here, since the bending connector 120 is bent in an "L" shape toward the other ground rod 100 through which the ground wire C passing through it passes, the ground wire C is naturally connected to the bending connector 120 of the other ground rod 100 without being excessively bent, so that the ground wire C can be very easily attached to the ground rod 100.

[0054] Then, both ends of each bending connector 120 are crimped with a fixing means or fastened with a fastening bolt 123 to firmly fix the ground wire C to the bending connector 120, thereby completing the grounding.

[0055] Although the preferred embodiment of the present invention has been illustrated and described above with reference to the accompanying drawings, various modifications and variations are possible within the scope of the spirit and field of the present invention as determined by the following claims, and these must also be included in the scope of the present invention. [Explanation of symbols]

[0056] 100 ground rod 110 Rod 111 Head 112 Sharp part 114 Spiral projection 120 Bending Connector 121 Crimping section 122 Screw hole 123 Fastening bolt C Ground wire S Socket T Power tools

Claims

1. A rod body having a head portion formed at an upper end and a sharp tip portion formed at a lower end; a bending connector consisting of a pipe bent into an "L" shape with both ends open so that a ground wire can pass through it, the bending connector being welded horizontally to the side of the rod; and a fixing means for fixing the ground wire passing through the inside of the bending connector to the bending connector.

2. 2. The ground rod according to claim 1, wherein a helical protrusion is formed in the vertical direction along the outer circumferential surface of the rod body.

3. 2. The ground rod according to claim 1, wherein the head portion is polygonal in shape to correspond to the shape of a socket assembled to a power tool so as to be inserted into the socket.

4. The ground rod according to claim 1 , wherein the pointed portion has a non-right circular cone shape having a cross section that forms a right triangle.

5. 2. The ground rod according to claim 1, wherein the fixing means is a crimping portion formed on both ends of the bending connector.

6. 2. The ground rod according to claim 1, wherein the fixing means includes screw holes formed at both ends of the bending connector, and fastening bolts fastened to the screw holes and tightly attached to the ground wire.

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