KR100226306B1 - Electric Wire Underground Multipurpose - Google Patents

Abstract

[Problem] Provides an electric wire hollow groove that is light in weight, easy to handle, can reduce construction effort, and easily performs rolling compression.

[Solution] It consists of a resin outer periphery 1 and a resin electric wire accommodation tube 2. The outer shell 1 has a box-shaped outer surface shape which can be divided into two. Inside the outer periphery 1, the wire housing tube 2 is fitted. The pipe may be branched into a T-shape, and the branched section may be opened on the side surface of the periphery to form a branch line outlet 6. Moreover, the electric wire accommodation tube 2 can also be set as the structure which provided the corrugated pipe 8 in connection with the both sides of the hollow planar structure part 7 comprised by the plane which at least one surface is parallel to the outer periphery.

Then, the perforations or thinner portions 11 and 12 for drawing the branch line are formed in a plane parallel to the outer side of the planar structure 7, and the outer sheet 1 also has a thin thickness for drawing the branch line. It is preferable to form the part 13.

Description

Electric Wire Underground Multipurpose

The present invention relates to wire cavity grooves used for underground wiring such as power cables.

As the electric wire cavity grooves as described above, a porous conduit 30 as shown in Fig. 4 has conventionally been used. The porous conduit 30 forms a plurality of electric wire accommodating holes 32 and a connection bolt through hole 33 in a ceramic cylinder 31 made of ceramics. Moreover, on the outer peripheral surface of the cylinder 31, the coupling recessed part 34 for reducing a weight and engaging a feed hook etc. is formed.

However, such a conventional porous conduit 30 has a problem that it is heavy because it is a ceramic material, and it is easy to be damaged by an impact and is not easy to handle. In addition, it was necessary to shorten one length because it was heavy, and there existed a problem that labor required for construction. In addition, there is a problem that the rolling compression at the time of embedding in the ground is not easy because there is a coupling recess 34 on the outer surface.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, to be light in weight, easy to handle, and to reduce the effort of construction, and to provide an electric wire cavity for easily rolling rolling.

1 is an exploded perspective view showing a first embodiment of the present invention.

2 is an exploded perspective view showing a second embodiment of the present invention.

3 is an exploded perspective view showing a third embodiment of the present invention.

4 is a perspective view showing a conventional porous conduit.

Explanation of symbols for main parts of the drawings

1: Outer

2: wire storage tube

3: rib for reinforcement

4: flange

5: bolt

6: branch line outlet

7: planar structure

8: corrugated pipe

9: vertical plane

10: horizontal plane

11, 12, 13: see-through or thin section

30: porous pipe

31: cylinder

32: wire storage

33: through hole for connecting bolt

34: joining recess

The present invention made to solve the above problems is characterized in that an electric wire housing tube of a resin pipe is sandwiched inside a resin outer shape having a box-shaped outer surface shape that can be divided into two parts. The electric wire storage tube may be branched into a T-shape, and the branched end may be opened on the outer side to form a branch line outlet. The electric wire storage tube may be branched into a T-shape and branched to the T-shape. The side surface of the outer side corresponding to the made cross section is made thin so that it can be broken only at the time of branch use, and can be a branch wire outlet.

In addition, at least one surface may be an electrical wire storage tube provided with a corrugated pipe connected to both sides of the hollow flat structure portion formed by a plane parallel to the outer side. It is also possible to form a see-through hole or a thin part of the dragon.

EMBODIMENT OF THE INVENTION Preferred embodiment of this invention is described below, referring drawings.

1 is a diagram showing a first embodiment of the present invention. The code | symbol 1 is a resin outer periphery, and code | symbol 2 is the electric wire accommodation tube of the two resin pipes which are attached to the inside of this outer periphery 1. As shown in FIG. The outer shell 1 is preferably made of a resin having excellent impact resistance, and has a box-shaped outer surface shape that can be divided into two parts up and down from the center plane. The outer surface of the outer shell 1 is a smooth surface, but a plurality of reinforcing ribs 3 are provided at predetermined intervals inside. Portions other than the reinforcing ribs 3 inside the outer shell 1 are spaces, and the overall weight is reduced while the material is made of resin.

The wire storage tube 2 is preferably made of a flame-retardant resin, and flanges 4 are integrally formed at both ends thereof. The length of the wire housing tube 2 is the same as the length of the perimeter 1, and as shown in the figure, the wire housing tube 2 is sandwiched between the reinforcing ribs 3 and 3 of the upper and lower perimeters 1 and 1. The upper and lower outer edges 1 and 1 are assembled by the bolts 5. The flanges 4, 4 are then located at both end faces of the perimeters 1, 1. And although there are two electric wire storage pipes 2 in this invention, you may make it three or more.

The electric wire cavity groove of the present invention configured as described above is embedded in the ground in the same manner as the conventional porous conduit 30, but since the whole is made of resin, it is significantly lighter than the porous conduit 30, Impact property is improved. For this reason, it is easy to handle and can manufacture a long length, and can reduce the connection part and can improve the workability. In addition, in the conventional porous conduit 30, the engaging concave portion 34 is formed on the outer surface, whereas the present invention can make the outer surface a smooth surface, so that rolling compression in the ground is easy and overlaps. There is also an excellent advantage in the stability when stacked.

In addition, since the electric wire cavity groove of this invention consists of the outer periphery 1 and the electric wire accommodation tube 2, the resin which is optimal for each can be used. For this reason, as mentioned above, the outer periphery 1 is excellent in impact resistance, and the damage at the time of embedding can be prevented, and the wire housing tube 2 is made into flame retardant resin, and combustion can also be prevented.

2 is a diagram showing a second embodiment of the present invention. In this figure, the electric wire accommodation tube 2 is made into the shape which branched T-shaped, and the branched cross section is opened to the side surface of the outer side 1, and it is set as the branch wire lead-out opening 6. As shown in FIG. Since the conventional porous conduit 30 is a ceramic material, secondary processing is difficult, and it is difficult to branch the branch line in the middle of the straight pipe. However, the structure as shown in FIG. 2 makes it easier to branch the branch line. In addition, since the branch lead-out port 6 can be made into a vertical plane, the connector for branch lead-out can be attached, and the waterproof performance of the wire storage pipe 2 can be maintained as it is. And the side surface of the outer side 1 corresponding to the branched cross section and the branched cross section may be made into a thin part, and may be broken only at the time of branch use, and it may be set as the branch wire outlet 6.

3 is a diagram showing a third embodiment of the present invention. The electric wire storage tube 2 is preferably made of flame-retardant resin, and is formed by connecting corrugated pipes 8 and 8 on both sides of the central flat structure portion 7 in series. The center planar structure portion 7 is a hollow structure constituted by at least four planes including at least the vertical plane 9 and the horizontal plane 10. In Fig. 3, the cross section is a square cylindrical body. In the vertical plane 9 and the horizontal plane 10 of the planar structure 7, the through holes or the thin portions 11 and 12 for drawing the branch line are formed.

In addition, although the branch line is drawn out in the horizontal direction and the vertical direction in the above description, it may be drawn out in the inclined direction. In this plane, a through hole for drawing a branch line or a thin portion 13 is formed.

Further, the corrugated pipes 8 and 8 are portions for supporting the stored wires, and since the contact with the wires is in point contact, the frictional resistance at the time of pulling the wires into the pipeline can be reduced. This becomes easy. Moreover, since the corrugated pipes 8 and 8 can be expanded and contracted, even when the dimension of the resin outer periphery 1 changes with temperature change, it can expand and follow this and absorb a dimension change. The flanges 4 and 4 fixed to the outer periphery 1 are provided at both ends of the corrugated pipes 8 and 8.

Thus, since the electric wire cavity groove of 3rd Embodiment is comprised by the corrugated pipes 8 and 8 of the both side parts of the electric wire accommodation pipe 2, the frictional resistance at the time of drawing an electric wire into a pipeline can be reduced, and the outer edge Even if the dimension of (1) changes due to temperature change, it can be absorbed.

Moreover, since the hollow flat structure part 5 comprised by the plane containing at least the vertical surface 9 and the horizontal surface 10 is formed in the electric wire accommodation tube 2, an electric wire is branched in this part, It can be pulled upwards or laterally through the construction or the thin portions 11 and 12. The branch line is easily drawn to the outside by breaking the thin portions 13 and 13 for drawing the branch line of the outer periphery 1.

As described above, the electric wire cavity groove of the present invention is lighter, less brittle, easier to handle, less trouble in construction, and easier rolling rolling in the land than the conventional products. It can have many advantages, such as performing it easily, being easy to pull out a branch wire, and being able to absorb the expansion and contraction of the outer edge by a temperature change with a corrugated pipe.

Claims (5)

An electric wire cavity groove, wherein an electric wire housing tube of a resin pipe is fitted inside a resin outer shape having a box-shaped outer surface that can be divided into two parts. The electric wire cavity groove according to claim 1, wherein the electric wire housing tube is branched into a T-shape, and the branched end face is opened on the outer side to form a branch wire outlet. The electric wire receiving tube according to claim 1, wherein the electric wire receiving tube is branched into a T-shape, the outer side surface corresponding to the branched section and the branched section is made into a thin portion, and broken only during branching, so as to be a branch line outlet. Wire joint groove. The electric wire cavity groove according to claim 1, wherein at least one surface is an electric wire housing tube in which corrugated pipes are successively provided on both sides of the hollow flat structure portion formed by a plane parallel to the outer periphery. The wire cavity as set forth in claim 4, wherein a projection hole for drawing a branch line or a thin part is formed in a plane parallel to the outer side of the planar structure.