JP3049939U - Earth stick - Google Patents

Abstract

(57) [Abstract] [Problem] To be easily and accurately embedded in the ground easily, the copper tube is hardly damaged, the ground effect can be sufficiently exerted, and the conical head of the steel rod is removed. Designed to be able to simplify the processing operation and increase the economic effect. A groove (11) is provided on the surface of a steel rod (1). A copper skin tube 2 adheres to the outer surface of the steel bar 1. The steel bar 1 is provided with a replaceable conical head 12. The maximum diameter of the conical head 12 is larger than the outer diameter of the copper sheath tube 2.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an improved structure of the earth rod, which has the advantages that the structure is simple, the operation is simple, the problem of the copper skin tube being damaged is improved, and a conical head can be attached. It refers to products that have reduced production costs and improved economic and practical efficiency.

[0002]

[Prior art]

 A conventional earthing rod is a steel rod 1 covered with a single copper sheath tube 2 and having a polished surface. The front end of the steel rod 2 has a conical shape (see FIG. 1), and the steel rod 1 is straightened. Can be driven into the ground. There are many types of geology, such as sandy soil, granite, and limestone. When the steel rod 1 is driven into hard geology, resistance occurs between the copper sheath 2 covering the steel bar and the geology, and the copper sheath 2 is wound. It is easy to shrink (see FIG. 2), and the effect of inducing the copper sheath tube 2 cannot be sufficiently exhibited.

[0003]

[Problems to be solved by the invention]

 The main purpose of the present invention is that the conventional earthing rod cannot fully exhibit the earthing effect, is expensive, and is inconvenient. The purpose is to develop an earth rod that can make the copper skin tube less susceptible to damage and exhibit a sufficient earth effect. Another objective is to design the conical head at the end of the steel bar so that it can be removed, simplifying the machining operation and increasing economic efficiency.

[0004]

[Means for Solving the Problems]

 Cross-grooves, mesh grooves and other grooves are installed on the surface of the steel rod, the copper sheath is firmly attached to the outer surface of the steel rod, and the steel rod is provided with a replaceable conical head, Is larger than the outer diameter of the copper skin tube.

[0005]

[Embodiment of the invention]

 As shown in FIG. 3, the steel rod 1 in the ground rod of the present invention has a groove 11 having a net-like groove, a cross groove, or another shape on its surface. And at one end of the steel rod 1 there is a conical head 12 whose maximum diameter is larger than the diameter of the copper sheath covering the steel rod 1. As shown in FIG. 4, in the earth rod of the present invention, a steel rod 1 is first fitted into a copper sheath tube 2. The copper sheath tube 2 can be reduced in diameter by stretching. The copper skin tube 2 is stretched on the steel bar, and a part of the inner diameter of the copper skin tube 2 is inserted deeply into the groove 11 of the steel bar 1, so that the copper skin tube 2 and the steel bar 1 are firmly attached (see FIG. 5, see Figure 6). In the ground rod of the present invention, since the copper sheath tube 2 is firmly attached to the outside of the steel bar 1, when the steel bar is driven into the ground, the copper sheath tube 2 is damaged and falls off or is crimped. No problem. Since the conical head 12 of the steel rod 1 is larger than the outer diameter of the copper pipe 2, when the steel rod 1 is buried in the ground, no friction occurs between the copper pipe 2 and the ground. Therefore, the copper skin tube is not broken and falls off or crimped. In the present invention, the steel rod 1 and the conical head 12 are separately manufactured and finally combined to simplify the manufacturing of the ground rod and reduce the cost. As shown in FIGS. 7 and 8, at the front end of the steel bar 1, there is a fitting portion 13 that can be fitted into the inclined inner hole 121 of the conical head 12. The size of the fitting portion 13 is designed so that the inclination of the fitting portion 13 is also close to the inner diameter of the inner hole 121 (here, the principle of the Morse taper is adopted). Thus, when the ground rod is driven into the ground, the fitting portion 13 and the inner hole 121 are in close contact with each other, and there is no problem that the conical head 12 moves or falls off. The maximum diameter of the conical head 12 is at least larger than the outer diameter of the earth rod, and the front end 21 of the copper sheath tube 2 enters the end face 122 of the conical head 12, so that the front end of the copper sheath tube of the conventional earth rod directly contacts the ground. However, the problem of crimping does not occur. This can extend the life of the earth rod. In addition, the fixing of the steel bar 1 and the conical head 12 can be designed as shown in FIGS. That is, the screw rod 111 is installed at the front end of the steel rod 1, and the screw rod 111 is designed to be screwed into the screw hole 123 in the conical head 12. At this time, the maximum diameter of the conical head 12 is designed to be larger than the outer diameter of the copper sheath tube 2 covering the steel rod 1.

[0006]

[Effect of the invention]

 The earth rod of the present invention has a groove 11 on the surface of the steel rod 1 to increase the adhesion to the copper sheath tube 2 and to reduce the production cost by separating the conical head 12 and the steel rod 1. The material (metal or other hard material) of the conical head can be changed depending on the geology, and the economic effect and practicality can be improved.

[Brief description of the drawings]

FIG. 1 is a three-dimensional explanatory view of a conventional earthing rod.

FIG. 2 shows a usage state of a conventional ground rod.

FIG. 3 is an explanatory view of the steel rod of the present invention.

FIG. 4 is an explanatory view of a combination of a steel rod and a copper sheath tube according to the present invention.

FIG. 5 is a sectional view of the present invention.

FIG. 6 is a local sectional view of FIG. 5;

FIG. 7 is an explanatory view showing a state where a steel bar and a conical head are separated.

FIG. 8 is an explanatory view showing a state where a steel bar and a conical head are mounted.

FIG. 9 is an explanatory view showing a state in which a steel bar and a conical head are separated in another embodiment.

FIG. 10 is an explanatory view showing a state where a steel bar and a conical head are mounted in another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Steel rod 11 Groove 111 Screw bar 12 Conical head 121 Inner hole 122 End face 123 Screw hole 13 Fitting part 2 Copper skin tube 21 Front end

Claims (2)

[Utility model registration claims] 1. A steel rod having a conical head at one end,
In addition to providing the outer surface of the steel rod for copper cladding, the steel rod surface has mesh grooves, cross grooves, or other shaped grooves.The outer side of the steel rod is stretched and adhered when mounting the copper cladding. An earth rod, wherein the maximum diameter of the conical head of the steel rod is greater than the outer diameter of the steel rod fitted with the copper skin tube. 2. A steel rod and a conical head are assembled, a front end of the steel rod is provided with a sloped fitting portion, and the fitting portion is fitted into a sloped inner hole of the conical head, or 2. A screw rod and a screw hole are installed and fixed to the rod and the conical head, respectively.
Ground rod as described in.