JP2566720B2 - Telephone pole structure for telephone cable - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone cable telephone pole structure which enables a telephone cable to be connected to a subscriber's outdoor line.

[0002]

2. Description of the Related Art FIG. 10 shows a conventional telephone cable installation state. Reference numeral 11 is a telephone cable, 13 is a messenger wire that supports the telephone cable 11, 15 is a telephone pole that supports the messenger wire 13, and 17 is a connection terminal box that connects the telephone cable 11 and a subscriber outdoor line 19.

[0003]

In the conventional erected telephone cable, since the connection terminal box 17 is supported by the messenger wire 13, a new connection of the outdoor line 19 for subscribers,
When performing switching connection, connection state inspection, etc., the worker must climb to the connection terminal box 17 and perform various work at that position (that is, in the air) each time.
Therefore, there is a problem that workability is poor and inefficient, and work is performed at a high place, and thus there is a high risk of falling.

In order to improve this, the connection terminal box is housed in the lower part of the hollow utility pole, and the telephone cable and the outdoor line for the subscriber are drawn into the hollow utility pole so that the outdoor line for the subscriber can be connected on the ground. There are also proposals (Japanese Patent Application Laid-Open No. 2-
No. 17819). However, in the conventional proposals, it is troublesome to pull the subscriber's outdoor line into the hollow utility pole,
There were practical problems.

[0005]

DISCLOSURE OF THE INVENTION The present invention provides a telephone pole utility pole structure which solves the above-mentioned problems, and has a structure in which the upper end surface is an inner peripheral surface at the upper end of a hollow utility pole. The trumpet-shaped member that is a smooth curved surface that is continuous from the side to the outer peripheral surface, and the lower end of the inner peripheral surface is inside the hollow utility pole.
It is installed so that it is positioned , and a cover is attached to the upper part of the trumpet-shaped member at an appropriate distance from the trumpet-shaped member, and an opening having an opening / closing lid is provided in the lower part of the hollow utility pole. Install a connection terminal box for connecting the telephone cable to the subscriber's outdoor line, and draw the subscriber's outdoor line at the lower end on the inner peripheral surface side of the trumpet-shaped member.
Connect a guide pipe for burn them, the lower the guide pipe in the hollow utility pole, its guide the lower end of the pipe is opened in the vicinity of the connection terminal box making, further said hollow utility poles of suitable locations hollow utility pole in the telephone cable It is characterized in that a cable introducing portion for introducing into is provided.

[0006]

By using this telephone pole structure, the outdoor line for subscribers and the telephone cable can be connected as follows.
First, when constructing a telephone cable, a part of the telephone cable is introduced into the hollow utility pole from the cable introduction portion, and the core wire thereof is drawn into the connection terminal box.

[0007] In this state, when it becomes necessary to newly connect the subscriber's outdoor line to the telephone cable, first, a wire is passed through the lower end opening of the guide pipe (used to wire the wire to the conduit). Send in. Then, the tip of the wire passes through the guide pipe, hits the cover when reaching the upper end of the hollow utility pole, changes its direction there, and goes out of the hollow utility pole between the cover and the trumpet-shaped member. If the feeding is further continued, the tip of the wire will hang down on the ground due to its own weight.

Therefore, by connecting the outdoor wire for the subscriber to the tip of the wire, and then pulling back the wire, the outdoor wire for the subscriber can be drawn in from the upper end of the hollow utility pole. When the tip of the subscriber's outdoor line comes out of the lower end opening of the guide pipe, disconnect the connection between the subscriber's outdoor line and the through wire, and introduce the subscriber's outdoor line into the connection terminal box to connect the telephone cable. Connect with the designated core. As described above, the worker can perform all the work on the ground, from the entry of the subscriber's outdoor line into the hollow utility pole to the connection to the telephone cable.

A guide pipe is installed in the hollow utility pole, and a trumpet-shaped member and a cover are provided at the upper end of the hollow utility pole to ensure that the outdoor wire for the subscriber can be reliably drawn in by feeding and pulling back the wire. This is so that it can be done quickly. In addition, the trumpet-shaped member has an effect of preventing the outdoor line from being rubbed and damaged when the outdoor line for subscribers is drawn in from the upper end of the hollow utility pole, and also allows the pulling-in work to be performed smoothly.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 shows a telephone pole telephone pole structure according to an embodiment of the present invention, and FIG. 2 shows its usage. In the figure, 21 is a hollow electric pole composed of a steel pipe pillar, 23 is a trumpet-shaped member attached to the upper end, and 25 is a trumpet-shaped member.
A cover attached to the upper part of 23 with a gap G, 27 is a cable introducing member attached to the middle part of the hollow utility pole 21, 29 is an opening formed in the lower part of the hollow utility pole, 31 is the back of the opening 29. A connection terminal box installed at 33, an opening / closing lid 33 for closing the opening 29, and a hollow utility pole 21 from the lower end of the trumpet-shaped member 23.
It is a guide pipe lowered inside. In FIG. 1, the intermediate portion of the hollow utility pole 21 and the guide pipe 35 is omitted.

The details of the upper end of the hollow utility pole 21 are shown in FIG.
The trumpet-shaped member 23 has a smooth curved surface 37 that is continuous from the inner peripheral surface side to the outer peripheral surface side on the upper end surface, and the inner cylindrical portion 39 is formed below the inner peripheral surface side, and the outer peripheral surface side is formed. The outer cylinder part 41 is located below
Are formed. The outer cylinder portion 41 is inserted into the upper end of the hollow utility pole 21 and fixed to the hollow utility pole 21 with a screw 43. The trumpet-shaped member 23 is made of metal or plastic.

Next, the cover 25 is a disk made of metal or plastic and is installed on the trumpet-like member 23 by using the bolt 43, the nut 45 and the collar 47. The gap G between the cover 25 and the trumpet-shaped member 23 is set to a size that allows the passage wire and the outdoor line for subscribers to freely pass therethrough and does not allow small birds or the like to enter the trumpet-shaped member 23. It is usually about 20 to 30 mm. The cover 25 not only prevents rainwater from entering the trumpet-shaped member 23, but also functions as a guide for changing the course of the wire running from the trumpet-shaped member 23 to the outside of the hollow utility pole 21, as described later. .

A guide pipe 35 is connected to the lower end portion of the inner tubular portion 39 of the trumpet member 23 by using a cylindrical nut 49, a tightening ring 51, a packing 53 and the like. The guide pipe 35 is a corrugated pipe made of plastic used for electric conduits and the like.

FIG. 4 shows another example of the structure of the upper end portion of the hollow utility pole 21. In this example, a guide pipe 35 made of a spiral corrugated pipe is screwed into the lower end of the inner tubular portion 39 of the trumpet-shaped member 23. Other than that, it is substantially the same as the example of FIG.

Next, FIGS. 5 and 6 show an example of the cable introducing member 27 attached to the intermediate portion of the hollow utility pole 21. This cable introducing member 27 is made of rubber or plastic,
A flange that is curved with almost the same curvature as the surface of the hollow utility pole 21.
55 is integrally formed with a tapered cylindrical portion 57 extending obliquely upward. A plurality of double ridges 59 indicating the cutting position are formed on the outer circumference of the tapered cylindrical portion 57, and the inner diameter of the cut end changes depending on the cutting position, so that it is possible to handle multiple types of telephone cables of different sizes. ing. In this cable introducing member 27, the flange portion 55 is applied to the hollow electric pole 21 and is fixed to the hollow electric pole 21 with a screw or the like (see FIGS. 1 and 6). An introduction port 61 is previously formed in a portion of the hollow utility pole 21 to which the cable introduction member 27 is attached.

Next, FIGS. 7 to 9 show the structure of the lower portion of the hollow utility pole 21. As shown in FIG. 7, the connection terminal box 31 installed in the hollow utility pole 21 has the opening / closing lid 33 of the opening 29 opened,
It can be tilted forward around the support shaft 63.
In this way, the connection terminal box 31 can be taken out of the hollow utility pole 21, so that the work for connecting the outdoor line for subscribers can be easily performed.

Further, on the back side of the connection terminal box 31, as shown in FIG. 8 and FIG. Further, as shown in FIG. 8, a fixing bracket 67 for the guide pipe 35 is attached to the upper portion of the connection terminal box 31, and the lower end portion of the guide pipe 35 is fixed to this fixing bracket 67, as shown in FIG. There is an opening just above the connection terminal box 31.

The above is the specific configuration of the telephone pole telephone pole structure. Next, a method of using this telephone pole structure will be described. This telephone pole structure is also installed in the same manner as a normal telephone pole, and telephone cables are installed. FIG. 2 shows an example thereof. Reference numeral 13 is a messenger wire supported by the hollow utility pole 21, and 11 is a telephone cable supported by the messenger wire 13. The telephone cable 11 is pulled down at this telephone pole structure, is introduced from the cable introducing member 27 into the hollow telephone pole 21, and is further pulled down through the space between the hollow telephone pole 21 and the guide pipe 35 to the connection terminal box 31, where it is connected. It is drawn into the terminal box 31. This is the end of the construction work for the telephone cable 11.

After that, when it becomes necessary to connect the subscriber's outdoor line to the telephone cable, first, a wire (not shown) is fed from the lower end opening of the guide pipe 35. Then, the tip of the wire passes through the guide pipe 35, reaches the trumpet-shaped member 23, and hits the cover 25 when it exits there. Therefore, the direction is changed there and the hollow utility pole 21 is inserted between the cover 25 and the trumpet-shaped member 23. Get out of. When the feeding of the wire is further continued, the tip end of the wire hangs down by its own weight.

When the tip of the through wire reaches near the ground, an outdoor line for subscribers is connected to the end of the through wire, and the through wire is pulled back this time. As a result, the subscriber's outdoor line is drawn into the guide pipe 35 from the upper end of the hollow utility pole, so that the end of the subscriber's outdoor line is guided by the guide pipe 35.
At the place where it goes out from the lower end opening of the telephone, disconnect the connection between the outdoor line for subscribers and the line wire, pull the outdoor line for subscribers 19 into the connection terminal box 31, and connect it to the predetermined core wire of the telephone cable 11. I do.

As described above, the worker connects the outdoor line 19 for the subscriber with the hollow utility pole 21 of the outdoor line 19 for the subscriber.
Everything can be done on the ground, from pulling in to connecting with a telephone cable.

In the above embodiments, the case where the cable introducing portion is provided in the middle portion of the hollow utility pole has been described, but the cable introducing portion may be provided under the hollow utility pole, that is, near the connection terminal box.

[0024]

As described above, according to the present invention, the connection terminal box is installed in the lower part of the hollow utility pole and the outdoor wire for the subscriber can be drawn from the upper end of the hollow utility pole to the connection terminal box. As a result, all operations such as new connection of subscriber's outdoor line, switching connection, and connection status check can be performed on the ground. For this reason, the work can be performed very efficiently, and work at a high place is not required, which is safe.

Further, since the guide pipe is installed in the hollow utility pole, it is possible to smoothly feed and pull back the wire, and to reliably and quickly pull the outdoor line for the subscriber into the hollow utility pole. You can Furthermore, since a trumpet member is attached to the upper end of the hollow utility pole, there is no risk of damaging the subscriber's outdoor wire when pulling the subscriber's outdoor wire into the guide pipe from the upper end of the hollow utility pole, and the work Can also be done smoothly.

[Brief description of drawings]

FIG. 1 is a sectional view showing a telephone pole telephone pole structure according to an embodiment of the present invention.

FIG. 2 is a partially cutaway front view showing a usage state of the telephone pole structure of FIG.

FIG. 3 is a cross-sectional view showing an upper end portion of the telephone pole structure of FIG.

FIG. 4 is a cross-sectional view showing another example of the upper end portion of the telephone pole telephone pole structure according to the present invention.

5 is a partially cutaway front view showing a cable introducing member used in the telephone pole structure of FIG. 1. FIG.

6 is a plan view of the cable introducing member of FIG.

7 is a side view showing a lower portion of the telephone pole structure of FIG. 1. FIG.

8 is a cross-sectional view showing a lower portion of the telephone pole structure of FIG.

9 is a side view showing a connection terminal box and a subscriber outdoor wire retention fitting used in the telephone pole structure of FIG. 1. FIG.

FIG. 10 is a front view showing a conventional installation state of a telephone cable.

[Explanation of symbols]

11: Telephone cable 13: Messenger wire 19: Subscriber outdoor line 21: Hollow utility pole 23: Trumpet member 25: Cover 27: Cable introduction member 29: Opening 31: Connection terminal box 33: Open / close lid

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Noriaki Sugawara 5-23-8 Nishigotanda, Shinagawa-ku, Tokyo Shinsei Denshi Co., Ltd. (72) Haruo Sato 5-23-8 Nishigotanda, Shinagawa-ku, Tokyo No. 56 Shin-denden Co., Ltd. (56) References JP-A-1-114321 (JP, A) JP-A-2-17819 (JP, A) Actually open 61-77621 (JP, U) Actually open 4- 72420 (JP, U)

Claims (1)

(57) [Claims] 1. A trumpet-shaped member (23) having an upper end surface which is a smooth curved surface continuous from the inner peripheral surface side to the outer peripheral surface side, and a lower end on the inner peripheral surface side of the hollow electric pole (21). Hollow part
It is installed so as to be located in the utility pole (21) , and a cover (25) is installed on the upper part of the trumpet-shaped member (23) with a proper gap (G) from the trumpet-shaped member (23), and the hollow utility pole An opening (29) having an opening / closing lid (33) is provided in the lower part of (21), and a telephone cable (11) and a subscriber outdoor line (19) are connected to the back of the opening (29).
A connection terminal box (31) for connection is installed, and a guide pipe (35) for drawing in the subscriber's outdoor wire (11) is connected to the lower end of the trumpet-shaped member (23) on the inner peripheral surface side. Then, the guide pipe (35) is pulled down into the hollow utility pole (21) and the guide pipe (35) is pulled down.
The lower end of the cable was opened near the connection terminal box (31), and a cable introducing part (27) for introducing the telephone cable (11) into the hollow utility pole (21) was provided at an appropriate location of the hollow utility pole (21). , telephone cable telephone pole structure characterized by.