JPH08218288A - Cable-covering pipe and covering of cable - Google Patents

Abstract

PURPOSE: To rapidly cover a cable and prevent the generation of a wind-cutting sound by receiving the cable in the main body of a covering pipe and subsequently integrally fixing projected pieces formed on the outer surface of the pipe to form plural projections. CONSTITUTION: The method for covering the cable 2 comprises receiving the cable 2 in a polyethylene pipe main body 4 in a state wherein a notch 4 is opened, closing the opened notch 5, and subsequently integrally fixing projected pieces 6, to each other, disposed on the main body parts faced to the notch 5 to cover the cable 2 and simultaneously form plural projections 50, 50A on the surface of the covering pipe 1. The polyethylene pipe main body 4 has a colored outer surface and has the notch 5 in the longitudinal direction to cover the cable 2. In stead of the pipe main body 4, the cable 2 may be covered with polyethylene curved pieces having C-shaped cross-sections, molded in long shapes, and having projected pieces formed on both the curved sides in the longitudinal direction, respectively, from both the sides, and subsequently the projected pieces are integrally fixed to each other to cover the cable 2 and form plural projections on the covering pipe. Thus, the generation of a wind- cutting sound caused by the mutual collision of air whirl rows along the outer shape of the covering pipe can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable sheathing tube and a cable sheathing method capable of maintaining the appearance of a building or the like and the surrounding landscape by coating a cable which is a structural material of a building or the like.

[0002]

2. Description of the Related Art Generally, a metal cable is used as a structural material of a building or the like, but if the cable is exposed to the outside as it is, the appearance of the building or the surrounding landscape is likely to be damaged. Therefore, in recent years, a method has been adopted in which the cable is covered with a cable-coated tube that has been colored to maintain the appearance and landscape.

FIG. 12 is a cross-sectional view of a conventional cable 100 and a cable jacket 101. The cable 100 is a bundle of a large number of steel wires 101A and has a circular cross section. The cable sheath 101 has a shape matching the shape of the cable 100. The cable covering tube 101 is formed of plastic, such as polyethylene, and is given a predetermined coloring treatment to improve its appearance and aesthetics.

[0004]

By the way, when the wind in the direction of arrow A blows from one side of the cable jacket 101, that is, from the left side in the drawing toward the cable jacket 101, the air is blown as shown by the arrow. It splits into two at 101 as a boundary, and becomes two arc-shaped air streams along the outer shape of the cable sheath 101, and Karman vortex rows B and C are generated on the other side of the cable sheath 101. As a result, there is a problem that the vortex street B and the vortex street C collide with each other to generate wind noise.

The present invention has been made to solve the above-mentioned problems, and when a wind blows from the front of a cable cladding tube toward the cable cladding tube, it is possible to weaken the vortex row generated behind the cable cladding tube. An object of the present invention is to provide a cable coating tube and a cable coating method.

[0006]

In order to achieve the above object, the invention according to claim 1 is to provide a pipe main body for coating a cable,
A plurality of protrusions provided in the longitudinal direction on the outside of the pipe body,
Have.

According to a second aspect of the present invention, there is provided a polyethylene pipe main body which is colored for covering the cable and is provided with a slit in the longitudinal direction, and a longitudinal direction is provided outside the pipe main body at a position facing the slit. A pair of projecting pieces separately provided, a projecting section provided at a position different from the pair of projecting pieces on the outside of the pipe body, and a projecting section different from the projecting section by fixing the pair of projecting pieces. Fixing means forming a part.

According to a third aspect of the present invention, a polyethylene pipe main body which is colored and is provided with a slit in the longitudinal direction, and the pipe main body, which is provided outside the pipe main body, separately in the longitudinal direction at a position facing the slit. A cable coating pipe having a pair of projecting pieces and a projecting portion provided at a position different from the pair of projecting pieces on the outside of the tube body is provided, and the cut is opened to allow the cable to pass through the cut. After arranging inward of the cable covering tube, the cut is closed to cover the cable, and the pair of protruding pieces are fixed to each other to form a protruding portion different from the protruding portion.

According to a fourth aspect of the present invention, a plurality of polyethylene-made curved pieces which are colored and are formed in a long shape with a C-shaped cross section, and both ends of the curved pieces on the outer side in the bending direction. And a protruding piece separately provided in the longitudinal direction,
Fixing means for forming a plurality of projecting portions on the outside of the pipe body by fixing the projecting pieces in a state in which both ends of the plurality of bending pieces in the bending direction are in contact with each other to form a tube body. Have.

According to a fifth aspect of the present invention, a plurality of polyethylene-made bending pieces that are colored and are formed in a long shape with a C-shaped cross section, and both ends in the bending direction on the outside of the plurality of bending pieces. And a protruding piece separately provided in the longitudinal direction,
And a cable is arranged inside the plurality of curved pieces, and both ends of the plurality of curved pieces are in contact with each other to form a tube body to coat the cable, and then the protruding piece is provided. A plurality of protrusions are formed in the longitudinal direction on the outer side of the pipe body by fixing them to each other with fixing means.

[0011]

When the wind blows from one side of the cable jacket to the cable jacket, the air stream splits into two parts with the cable jacket as a boundary, and the two streams follow the outer shape of the cable jacket. Airflow is generated, but the two airflows collide with the protrusion separately and the speed is reduced, and since the two airflows bypass the protrusion and the path becomes longer, it is generated on the other side of the cable cladding tube. The vortex train that runs is weakened.

According to the second and third aspects of the present invention, the same effect as that of the first aspect of the present invention can be obtained, and the cable can be disposed inside the cable cladding tube through the cut.

According to the invention described in claims 4 and 5, the same effect as that of the invention described in claim 1 can be obtained, and in addition, the pipe main body is constituted only by abutting the plurality of curved pieces without deformation. The cable can be coated.

[0014]

1 is a cross-sectional view showing a state in which a cable 2 is coated with a cable coating tube 1 according to an embodiment of the present invention. The cable 2 is used as a structural material such as a building (not shown) and is exposed to the outside. The cable 2 is a bundle of a large number of steel wires 3 and has a circular cross section, and the cable sheath 1 has a substantially cylindrical shape in accordance with the cable 2.

The cable covering tube 1 is integrally formed of plastic such as polyethylene or polypropylene, and its outer surface is colored. In this coloring treatment, first, a primer is applied to the outer surface of the cable cladding tube 1.
A primer layer is formed by applying a coating having a thickness of about several μm and then baking is performed, and a fluorine coating containing titanium oxide is applied on the surface of the primer layer, and then baking is performed to form a coating layer. Therefore, the cable cladding tube 1
The color of the can preserve the appearance of buildings and the surrounding landscape.

The cable jacket 1 is a tube body 4 having a circular cross section.
And the tube body 4 is provided with a slit 5 in the longitudinal direction. A pair of projecting pieces 6 is separately provided on the outside of the tube body 4 at a position facing the cut 5. Then, the pair of protruding pieces 6 are fixed to each other by a fixing means, for example, welding to form the protruding portion 50.

On the other hand, another protruding portion 50A is provided in the longitudinal direction at a position on the outer side of the pipe body 4 opposite to the cut 5. The height and width of the protrusion 50 and the protrusion 50A are set to be substantially the same.

The outer diameter of the cable sheath tube 1 may be set corresponding to the outer diameter of the cable 2, and the wall thickness thereof may be set corresponding to the outer diameter. FIG. 2 shows a method of manufacturing the cable cladding tube 1. First, a cable covering tube 1A having a tube body 4, a protruding portion 6A and a protruding portion 50A as shown in (A) is integrally molded by an extrusion molding machine (not shown). Next, the tube main body 4 and the one protruding portion 6A are collectively cut in the longitudinal direction by using a cutting machine (not shown) to form the cut 5 and the pair of protruding portions 6 as shown in (B), and the cable coating The tube 1 is manufactured.

The cable cladding tube 1 manufactured in this way
First, as shown by the chain double-dashed line in FIG. 1, the cut 5 is opened by elastic deformation, and the cable 1 is passed through the cut 5 and arranged inside the cable cladding tube 1.

After that, the break 5 is closed by elastic restoring force to cover the cable 1 with the cable covering tube 1, and the pair of projecting pieces 6 are welded and fixed to each other along the longitudinal direction at predetermined intervals or continuously. The protrusion 50 may be formed.

When the cable 2 is covered with the cable jacket 1, as shown in FIG. 1, when the wind blows in the direction of arrow D from one side of the cable jacket 1, that is, from the left side in the drawing toward the cable jacket 1. , The air is divided into two parts with the cable sheath 1 as a boundary, two air streams are generated along the outer shape of the cable sheath 1, and on the other side of the cable sheath 1, the Karman vortex streets E and F are generated for every two air streams. Occurs.

At this time, the two air flows are projected portions 50 and 5 respectively.
0A is decelerated by colliding with 0A, and the two airflows bypass the protrusions 50, 50A to lengthen the path, so both generated vortex rows E, F are weakened. Wind noise due to a collision can be prevented.

Further, since the cable 2 passes through the cut 5 and is arranged inward of the cable jacket 1, the covering operation of the cable jacket 1 can be performed quickly. Further, since the cable sheathing tube 1 is integrally molded with polyethylene, the manufacturing cost can be suppressed, the weight is light and the load applied to the cable 2 can be small.

FIG. 3 is a cross-sectional view showing the structure of another fixing means for fixing the pair of protruding pieces 6 to each other. Here, a metal fitting 7 made of stainless steel is used as the fixing means. The metal fitting 7 has a U-shaped cross section and is fixed by sandwiching the pair of projecting pieces 6 along the longitudinal direction to form a projecting portion 50.

The other structure is the same as that of the cable jacket pipe 1 of FIG. 1, and the covering operation on the cable 1 is also the same as that of FIG. Also in this embodiment, the same effect as that of FIG. 1 can be obtained. Further, since the fixing of the pair of protruding pieces 6 is completed only by mounting the metal fitting 7, the fixing work can be performed more quickly than the case of welding the pair of protruding pieces 6 to each other.

FIG. 4 is a plan view showing another embodiment of the fixing means. In (A), metal staples 8 are used as fixing means. The staples 8 are U-shaped in plan view,
After penetrating the pair of projecting pieces 6, the tip ends are bent to fix the pair of projecting pieces 6. The staples 8 are provided at predetermined intervals along the longitudinal direction of the pair of projecting pieces 6. Other configurations are the same as those of the cable cladding tube 1 of FIG.

In FIG. 4B, bolts 9 and nuts 10 are used as fixing means. A shaft hole (not shown) is provided in the pair of projecting pieces 6, and the pair of projecting pieces 6 are fixed to each other by tightening a bolt 9 and a nut 10 inserted in the shaft holes. Other configurations are the same as those of the cable cladding tube 1 of FIG. Also in the embodiment shown in FIGS. 4A and 4B, the same effect as that of FIG. 1 can be obtained.

FIG. 5A is a cross-sectional view showing another example of the structure of the cable jacket tube 60. The cable covering tube 60 has a tube body 61 having a circular cross section, and the tube body 61 is divided into a plurality of, for example, two curved pieces 62. The two curving pieces 62 are long and formed in a C-shaped cross section, and longitudinal projecting pieces 63 are separately provided at both ends in the curving direction on the outside of the two curving pieces 62.

If the cable 2 is arranged inside the two curved pieces 62 and both ends of the two curved pieces 62 are in contact with each other to form the tube body 61, the cable 2 can be covered with the cable covering tube 60. . In this state, if the protruding pieces 63 are fixed to each other by a fixing means, for example, welding, a plurality of, for example, two protruding portions 64 can be formed on the outside of the pipe body 60.

FIG. 5B is a cross-sectional view showing a divided state of the cable sheath tube 60. The two curved pieces 62 may be manufactured by cutting an extruded tube body into two pieces,
The plurality of curved pieces 62 may be separately extruded and manufactured in advance.

Also in this cable sheathing tube 60, the same operational effect as that of the cable sheathing tube 1 in FIG. 1 can be obtained. Also,
This cable sheathed tube 60 has a tube body 61 with two curved pieces 6
Since the cable 2 is divided into two, when the cable 2 is covered, the cable 2 is arranged inward of the two bending pieces 62, and the ends of the two bending pieces 62 in the bending direction are brought into contact with each other to make two bending pieces. The pipe body 61 can be configured without deforming the piece 62. Therefore, the cable sheath 1 is not damaged and the durability is improved.

FIG. 6 shows a cable sheathing tube 7 according to another embodiment.
It is a cross-sectional view showing a state in which the cable 2 is covered with 0. The cable covering tube 70 has a tube body 71 having a circular cross section, and the tube body 71 is provided with a cut 72 in the longitudinal direction. A pair of projecting pieces 73 is separately welded in the longitudinal direction on the outer side of the tube body 71 at a position facing the cut 72.
A protruding portion 74 is welded and fixed in the longitudinal direction on the outer side of the pipe body 71 on the side opposite to the cut 72. Then, the pair of projecting pieces 73 are fixed to each other by fixing means, for example, welding to form the projecting portion 75.

FIG. 7 shows a method of manufacturing the cable sheathing tube 70. First, a tube body 71 as shown in (A) and two elongated members 74A are separately molded by an extrusion molding machine (not shown). Next, as shown in (B), the two long members 74A are welded and fixed at symmetrical positions on the outside of the pipe main body 71, and the pipe main body 71 and one long member 74A are collectively packaged using a cutting machine (not shown). Then, the cable covering pipe 70 can be manufactured by cutting in the longitudinal direction to form the cut 72 and the pair of protruding pieces 73.

The cable jacket 7 produced in this way
0 is coated on the cable 2 in the same manner as the cable coating pipe 1 in FIG. 1, and the pair of projecting pieces 73 are welded to each other to complete the coating work. Also in this cable sheathing tube 70, the same operational effect as that of the cable sheathing tube 1 in FIG. 1 can be obtained.
Further, the pair of protruding pieces 73 may be fixed by the fixing means shown in FIGS. 3 and 4.

Since the cable main body 70 and the long member 74A are separately molded during the manufacturing process of the cable main body 70, the pipe main body 71 is directly formed by the extrusion molding machine generally used for forming the cable main body. It can be molded.

Therefore, it is not necessary to use a special extrusion molding machine to mold the tube body 71, and the manufacturing cost can be suppressed. FIG. 8 is a cross-sectional view showing a state in which the cable 2 is coated with the cable coating pipe 15 according to another embodiment.

The cable jacket 15 has a tube body 16 having a circular cross section, and the tube body 16 is provided with a cut 17 in the longitudinal direction. A pair of projecting pieces 18 is integrally provided on the outside of the tube body 16 at a position facing the cut line 17. The cross-sectional shape of the pair of projecting pieces 18 is substantially circular.

The pair of projecting pieces 18 are fixed to each other by a fixing means, for example, a metal member 19 made of stainless steel formed in a long shape to form a projecting portion 52. The metal fitting 19 is formed in a C-shaped cross section, and both ends of the metal fitting 19 are fixed to the roots of the pair of projecting pieces 18 to fix the pair of projecting pieces 18. A protrusion 76 is provided on the outer side of the pipe body 16 on the opposite side of the protrusion 52. The cross-sectional shape of the protrusion 76 is the same as that of the protrusion 52.

FIG. 9 shows a method of manufacturing the cable jacket tube 15. First, two protrusions 18 are formed on the outside of the tube body 16 as shown in FIG.
A cable jacket 15A having A and 76 is molded. Next, by using a cutting machine (not shown), the tube body 16 and the one protruding portion 18A are collectively cut in the longitudinal direction to form the cut 17 and the pair of protruding pieces 18 as shown in (B). The cable jacket 15 can be manufactured.

Cable 2 with this cable jacket 15
The covering operation is similar to that of the cable covered tube 1 shown in FIG. 1, and the same operation and effect as the cable covered tube 1 can be obtained. FIG. 10 is a cross-sectional view showing a state in which the cable 2 is covered with the cable covering pipe 20 according to another embodiment.

The cable jacket 20 has a tube body 21 having a circular cross section, and the tube body 21 has a cut 2 along the longitudinal direction.
2 is provided. A break 22 on the outside of the tube body 21
A pair of projecting pieces 23 are welded to the portion facing the. The cross-sectional shape of the pair of protruding pieces 23 is substantially circular,
It is fixed by a fixing means, for example, a metal fitting 24 made of stainless steel to form a protruding portion 53.

On the other hand, the protruding portion 5 on the outside of the pipe body 21
A protrusion 80 is welded and fixed in the longitudinal direction on the opposite side of the plate 3. The cross-sectional shape of the protrusion 80 is the same as the cross-sectional shape of the protrusion 53.

FIG. 11 shows a method of manufacturing the cable jacket 20. First, the tube main body 21 and the two long members 23A as shown in (A) are separately molded by an extrusion molding machine (not shown). Next, the two long members 23A are welded and fixed to the outside of the pipe main body 21, and the pipe main body 21 and one long member 23A are collectively lengthened as shown in (B) using a cutting machine (not shown). The cable sheath 20 can be manufactured by cutting in the direction and forming the slit 22 and the pair of protruding pieces 23.

Cable 2 with this cable sheath 20
The covering operation and effect thereof are similar to those of the cable covering tube 1 of FIG. In the cable jacket shown in FIGS. 1 to 11, a cut is provided in the tube body. However, when the cable itself and the cable jacket are relatively short, a cable jacket without break is provided. A configuration may be adopted in which the cable is covered with the cable coating tube by inserting the cable inside the casing along the longitudinal direction.

Further, the cable sheath tube shown in FIG. 5 may be formed by bending a flat plate. Furthermore, the material of the cable sheath tube may be aluminum, stainless steel, fiber reinforced plastic, or the like.

Further, in FIGS. 1 to 11, the two projecting portions may be arranged at different positions in the circumferential direction of the pipe body.
Also, three or more protrusions may be provided. If the number of protrusions is increased, the airflow can be obstructed regardless of the direction in which the wind blows on the cable cladding tube, and the function of preventing wind noise is improved.

Further, the cable sheath tube shown in FIGS. 6 to 11 may be divided into a plurality of pieces as in the embodiment shown in FIG. 5 and fixed by fixing means. The cross-sectional shape of the tube body may be elliptical or polygonal.

[0048]

As described above, according to the first aspect of the present invention, when the wind blows from one side of the cable coating pipe toward the cable coating pipe, the air is divided into two parts with the cable coating pipe as a boundary and the cable coating is provided. Two airflows are generated along the outer shape of the pipe, but both airflows collide with the protrusions and are decelerated, and detouring the protrusions lengthens the path, which weakens the generated vortex streets. It is possible to prevent wind noise generated when the vortex rows collide with each other on the other side of the cable.

In addition, the inventions of claims 2 and 3 can obtain the same effect as that of the invention of claim 1, and the cable can be arranged inside the cable cladding tube through the cut. The covering operation of the cable covering pipe on the cable can be performed quickly.

According to the invention described in claims 4 and 5, the same action as that of the invention described in claim 1 can be obtained, and the pipe main body is constituted only by abutting the plurality of curved pieces without deformation. The cable can be covered and the durability of the tube body is improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state in which a cable is covered with a cable covering pipe according to an embodiment of the present invention.

2A and 2B are partial perspective views showing a manufacturing process of the cable sheathing tube of FIG.

FIG. 3 is a transverse cross-sectional view showing a state in which a cable is covered with the cable covering pipe according to the embodiment of the present invention.

4 (A) and 4 (B) are partial plan views showing an embodiment of a fixing means for fixing a pair of projecting pieces in the cable coating tube of the present invention.

5A is a cross-sectional view showing a state in which a cable is coated with a split-type cable sheathing tube according to an embodiment of the present invention, and FIG. 5B is an exploded cross-sectional view of the split-type cable sheathing tube. It is a figure.

FIG. 6 is a transverse cross-sectional view showing a state in which a cable is coated with the cable sheathing tube according to the embodiment of the present invention.

7 (A) and 7 (B) are partial perspective views showing a manufacturing process of the cable sheathed tube of FIG. 6.

FIG. 8 is a cross-sectional view showing a state in which a cable is coated with the cable sheathing tube according to the embodiment of the present invention.

9 (A) and 9 (B) are partial perspective views showing a manufacturing process of the cable sheathed tube of FIG.

FIG. 10 is a cross-sectional view showing a state in which a cable is coated with the cable sheathing tube according to the embodiment of the present invention.

11A and 11B are partial perspective views showing a manufacturing process of the cable sheathing tube of FIG.

FIG. 12 is a cross-sectional view showing a state in which a cable is covered with a conventional cable-covered tube.

[Explanation of symbols]

 1,15,20,60,70 Cable sheath 2, Cable 4,16,21,61,71 Pipe body 5,17,22,72 Break 6,18,23,63,73 A pair of projecting pieces 7,19 , 24 metal fittings (fixing means) 8, staple (fixing means) 9, bolts (fixing means) 10, nuts (fixing means) 50, 50A, 64, 74, 75, 76

Claims (5)

[Claims] 1. A cable-covered pipe, comprising: a pipe main body for covering a cable; and a plurality of protrusions provided on the outside of the pipe main body in a longitudinal direction. 2. A coloring treatment for covering the cable,
And, a polyethylene pipe body provided with a cut in the longitudinal direction, a pair of projecting pieces separately provided in the longitudinal direction at a location facing the cut on the outside of the pipe body, and the pair of the outside of the pipe body. A cable covering tube, comprising: a protrusion provided at a position different from the protrusion, and a fixing unit that fixes the pair of protrusions to form a protrusion different from the protrusion. 3. A polyethylene pipe main body which is colored and is provided with a slit in the longitudinal direction, and a pair of projecting pieces which are separately provided in the longitudinal direction at positions outside the pipe main body facing the slits. A cable covering pipe having a protrusion provided at a position different from the pair of protruding pieces on the outside of the pipe body is provided, and the cut is opened to allow the cable to pass through the inside of the cable covering pipe. After arranging the cable, the cut is closed to cover the cable, and the pair of protruding pieces are fixed to each other to form a protruding portion different from the protruding portion. 4. A plurality of coloring pieces made of polyethylene, which are colored and formed in a long shape with a C-shaped cross section, and a plurality of bending pieces on the outside of the plurality of bending pieces, which are separate in the longitudinal direction. A plurality of projecting portions on the outside of the pipe body by fixing the projecting pieces provided in the tube body to each other in a state in which the tube body is configured by abutting both ends of the plurality of bending pieces in the bending direction. And a fixing means for forming the cable covering tube. 5. A plurality of colored bending pieces made of polyethylene, which are colored and formed in a long shape with a C-shaped cross section, and a plurality of bending pieces on the outer sides of the plurality of bending pieces, which are separate from each other in the longitudinal direction. And a cable coating pipe having a protruding piece provided in, and arranging the cable inside the plurality of bending pieces, and abutting the ends of the plurality of bending pieces to form a tube body to form a cable. After the coating, the projecting pieces are fixed to each other by a fixing means to form a plurality of projecting portions in the longitudinal direction on the outer side of the pipe body.