JPH09237528A - Coaxial cable with suspension wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the connection between a branching unit and a suspension wire from being released to apply an extra load to a cable and prevent the life of the cable from being shortened by fixing the suspension wire in a branch section in the uncut state. SOLUTION: A coaxial cable 4 constituted of an inner conductor, an insulator, and an outer conductor and a suspension wire 5 arranged along it are integrally covered with a sheath layer 6 to form this coaxial cable 7 with the suspension wire 5. The cable 4 side and the suspension wire 5 side of the cable 7 are separated by the prescribed length at portions of the sheath layer 6, e.g. the branch position and relay position of the cable 4, as required. A branching unit 8 is fitted to the cable 4 at these portions, however the suspension wire 5 is arranged along the side section of the branching unit 8 in the uncut state. The whole branching unit 8, a part of the suspension wire 5, and a part of the cables 4, 4' are protected by a branch section 9. The branch section 9 is formed into a mold section filled with a resin by molding, for example. The connection between the branching unit 8 and the suspension wire 5 can be prevented from being released to apply an extra load to the coaxial cables 4, 4' unlike the conventional one.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coaxial cable with a suspension wire used for wiring in a high-rise building, for example.

[0002]

2. Description of the Related Art An example of a conventional coaxial cable with a suspension wire is shown in FIGS. As shown in FIG. 4, the coaxial cable 7 with a suspension wire includes a coaxial cable 4 in which an insulator 2 and an outer conductor 3 are formed outside an inner conductor 1, and a suspension wire 5 attached to the coaxial cable 4. The sheath layer 6 is collectively covered.

At the branch position, the relay position, etc. of the coaxial cable 4, as shown in FIG. 5, the coaxial cable 4 side and the suspension line 5 side of the coaxial cable 7 with a suspension wire have a predetermined length and a sheath layer. It is separated by 6 parts. A branching device 8, an amplifier 11 (not shown here, see FIG. 3) and the like are attached to the coaxial cable 4 in this portion, and the suspension wire 5
Is cut off for a predetermined length by stripping the sheath layer 6 above and below the branching device 8 and connected to the upper and lower sides of the branching device 8.

In order to protect the branch device 8, the branch device 8, a part of the coaxial cable 4, and a part of the suspension wire 5 are housed in the branch part 9. However, reference numeral 4'denotes another coaxial cable with a sheath layer 6 '.

Here, in order to connect the branching device 8 and the suspension wire 5, for example, as shown in FIG.
Suspended wire hanging portions 10 and 10 'with through holes are provided, and as shown in detail in FIG. 6, the ends of the suspended wires 5 are passed through the through holes and bent.
It is wound around the main line of the suspension wire 5 so as not to come off.

When wiring the coaxial cable 7 with a suspension wire in a building, the upper end of the suspension wire 5 is connected to a suspension wire fixture provided at a predetermined location on the upper floor of the building in the upper floor of the building.
The coaxial cable 7 with the suspension wire is suspended. Here, the entire branch portion 9 may weigh about 1 kg. Therefore, the total weight of the coaxial cable with suspension wire 7 is, for example, 10
When wiring in a building of about one floor, the thickness of the cable,
Depending on the length, the number of branching portions 9, etc., the weight may be about 20 kg.

[0007]

In the coaxial cable 7 with a suspension wire having such a structure, the weight applied to the suspension wire hooking portion 10 'on the lower end side of the branching device 8 on each floor and the suspension wire 5 connected thereto is equal to that of the branching wire. Since the weight of the entire cable located below the portion 9 becomes, the higher the building in which the coaxial cable with suspension wire 7 is laid, the higher the floor, the suspension wire hanging portion 10 ′ of the branching device 8 will be. The load applied to the car was large.

Therefore, on the upper floor, the suspension wire hanging portion 10 'of the branching device 8 and the suspension wire 5 are disconnected from each other, and an extra load is applied to the coaxial cable 4, which may shorten the service life of the cable. .

The present invention has been made to solve the above problems, and an object thereof is to provide a coaxial cable with a suspension wire in which an excessive load is not applied to the coaxial cable.

[0010]

SUMMARY OF THE INVENTION A coaxial cable with a suspension wire according to the present invention is a coaxial cable, a suspension wire that is attached to the coaxial cable and supports the coaxial cable, a part of the coaxial cable and one of the suspension wires. It is a coaxial cable with a suspension wire having a branch portion in which a portion is accommodated, wherein the suspension wire is fixed through the branch portion in an uncut state.

In the coaxial cable with a suspension wire of the present invention, the suspension wire is not cut to a predetermined length on each floor and connected to the upper and lower portions of the branching unit as in the conventional case, but is fixed through the branching portion in an uncut state. There is.

Therefore, when the coaxial cable with a suspension wire is wired in a building, the entire load of the coaxial cable with a suspension wire is applied to the entire uncut suspension wire. Therefore, unlike the conventional case, the problem that the connection between the branching device and the suspension wire is disconnected and an extra load is applied to the coaxial cable and the cable life is shortened does not occur.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 3 show a coaxial cable 7 with a suspension wire as an example of an embodiment of the present invention. FIG.
As shown in FIG. 2, the coaxial cable 7 with a suspension wire includes a coaxial cable 4 in which an insulator 2 and an outer conductor 3 are formed outside an inner conductor 1, and a suspension wire 5 attached to the coaxial cable 4. It is collectively covered with 6. The following table shows an example of each material and outer diameter of the coaxial cable 7 with a suspension wire.

[0014]

[Table 1]

At the branching position, the relay position, etc. of the coaxial cable 4, as shown in FIG. 2, the coaxial cable 4 side and the hanging line 5 side of the coaxial cable 7 with a suspension wire have a predetermined length and a sheath layer. It is separated by 6 parts. A branching device 8 is attached to the coaxial cable 4 in this portion,
The suspension wire 5 is attached to the side portion of the branching device 8 in an uncut state. The branch unit 8 as a whole, a part of the suspension wire 5, and a part of the coaxial cables 4, 4 ′ are protected by the branch unit 9. The branch portion 9 is, for example, a mold portion formed by filling resin with a mold.

Further, as shown in FIG. 3, at a predetermined position of the coaxial cable with a suspension wire 7, a part of the coaxial cable 4 goes out from a side portion of the branch portion 9 (portion A in FIG. 3). It is fixed, and the amplifier 11 is attached to the coaxial cable 4 at this portion. However, in this case as well, the suspension wire 5 is fixed in a penetrating manner in the branch portion 9 in an uncut state.

In the example of the present embodiment, the example in which the coaxial cable with suspension wire 7 of the order shown in Table 1 is used is shown, but the coaxial cable with suspension wire 7 used in the present invention is not limited to this. However, any wire may be used as long as it is usually used as the suspension wire 5. For example, the suspension wire is vertically attached to the coaxial cable 4 having the sheath layer 6, and both are wound horizontally with a wire or the like. They may be integrated, and the number of suspension lines 5 may be plural.

In the example of the present embodiment, as shown in FIGS. 2 and 3, an example in which the branching device 8 and the amplifier 11 are attached to the coaxial cable 4 is shown, but the coaxial cable 7 with a suspension wire of the present invention is The present invention is not limited to this, and may be a module with other modules such as a multiplexer. Further, the branch portion 9 does not necessarily need to be filled with resin by molding, and may be a box type.

In the example of this embodiment, the suspension wire 5 is housed in the branching portion 9 without peeling off the sheath layer 6 on the suspension wire 5 side. However, the sheath layer 6 on the suspension wire 5 side is stripped off. It goes without saying that you can do this while in the off state.

Further, in the coaxial cable 7 with a suspension wire according to the present invention, it is sufficient that the suspension wire 5 is pierced and fixed in an uncut state in at least one branch portion 9, for example, it is wired on the lower floor of the building. The branching portion 9 may have the same structure as that of the conventional portion at the portion to be opened.

[0021]

When the coaxial cable with a suspension wire of the present invention is wired in a building, the entire load of the coaxial cable with a suspension wire is applied to the entire suspension wire in the uncut state. The problem that the connection is disconnected and an extra load is applied to the coaxial cable and the life of the cable is shortened does not occur.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a coaxial cable with a suspension wire as an example of an embodiment of the present invention.

FIG. 2 is an explanatory view showing a coaxial cable with a suspension wire, which is an example of an embodiment of the present invention, in a partially sectional state.

FIG. 3 is an explanatory view showing a coaxial cable with a suspension wire, which is an example of an embodiment of the present invention, in a partially sectional state.

FIG. 4 is a cross-sectional view showing an example of a conventional coaxial cable with a suspension wire.

FIG. 5 is an explanatory view showing a conventional coaxial cable with a suspension wire in a partially sectional state.

FIG. 6 is an explanatory view showing a conventional coaxial cable with a suspension wire in a partially sectional state.

[Explanation of symbols]

 1 Inner Conductor 2 Insulator 3 Outer Conductor 4, 4'Coaxial Cable 5 Suspended Wire 6, 6'Sheath Layer 7 Coaxial Cable with Suspended Wire 8 Brancher 9 Branching Section 10, 10 'Suspended Wire Hanging Section 11 Amplifier

Claims (1)

[Claims] 1. A coaxial cable with a suspension wire, comprising: a coaxial cable; a suspension wire that is attached to the coaxial cable and supports the coaxial cable; and a branch portion in which a part of the coaxial cable and a part of the suspension wire are accommodated. It is a cable, The said suspension line is the coaxial cable with a suspension line penetrated and fixed in the said branch part in an uncut state.