JP3048950B2 - Telephone pole structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a telephone pole structure for telephone cables, which enables a subscriber to pull in or connect an outdoor line on the ground.

[0002]

2. Description of the Related Art A conventional telephone pole structure for telephone cables, in which a work for pulling in and connecting an outdoor line for subscribers can be performed on the ground, is disclosed in Japanese Patent No. 2566720. In this electric pole structure, a trumpet-shaped member is attached to an upper end of a hollow electric pole, a guide pipe connected to a lower end of the trumpet-shaped member is pulled down into the hollow electric pole, and a lower end of the guide pipe is installed at a lower part of the hollow electric pole. It is open near the unit.

[0003] When the utility pole is structured as described above, an operator can perform various operations required for wiring of the outdoor line for subscribers on the ground as follows. First, a feeder wire is sent from the lower end opening of the guide pipe, and the feeder wire passes through the guide pipe, exits the hollow pole from the trumpet-shaped member, and hangs down on the ground. Connect the outdoor line for subscribers. Then, by pulling back the through wire, the outdoor line for the subscriber was pulled into the guide pipe from the upper end of the hollow telephone pole, and the outdoor line for the subscriber came out of the lower end opening of the guide pipe,
The connection between the outdoor line for the subscriber and the connecting wire is released, and the outdoor line for the subscriber is connected to the connection unit installed in the hollow telephone pole.

[0004]

The conventional utility pole structure is
Since a trumpet-shaped member is attached to the upper end of the hollow power pole and the outdoor line for the subscriber is drawn into the hollow power pole, there is a problem that the use of the upper end of the hollow power pole is restricted.

That is, telephone poles for telephone cables are used not only for erection of telephone cables but also for erection of power lines. When a telephone pole and a power line are installed on a telephone pole, the power line is usually installed above the telephone cable. In addition, pole accessories such as poles and arms may be attached to the upper end of the pole. Therefore, if it is a structure in which a trumpet-shaped member is attached to the upper end of a hollow electric pole like the conventional electric pole structure and the outdoor line for the subscriber is drawn from there, a power line is erected at the upper end of the electric pole later, or a telephone pole accessory is installed. When mounting, there is a problem that the horn-shaped member and the outdoor line for the subscriber already wired for the subscriber are in the way. Conversely, if a power line is erected at the upper end of the power pole or a power pole accessory is attached, there is also a problem that they become obstructive when wiring the outdoor line for the subscriber later.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a telephone cable in which the use of the upper end of a telephone pole is not restricted, and the power line and telephone pole accessories do not interfere with the wiring of a subscriber outdoor line. An object of the present invention is to provide a utility pole structure.

[0007]

In order to achieve this object, a telephone pole structure for a telephone cable according to the present invention has a hole formed in an upper middle portion of a hollow power pole, and a hole is formed in one end of an elbow portion. A flanged elbow having a flange portion and a surface from the inner surface of the elbow portion to the outer surface of the flange portion being a trumpet-shaped smooth curved surface, the flange portion of which is outside the hollow power pole, and the elbow portion of which is a hollow power pole. It is installed so as to be located inside, and an opening having an open / close lid is provided at the lower part of the hollow telephone pole, and a connection unit to which a telephone cable and an outdoor line for a subscriber are connected is installed at the back of the opening, A guide pipe is connected to the end of the elbow section located in the hollow power pole, the guide pipe is pulled down into the hollow power pole, the lower end of the guide pipe is opened near the connection unit, and The serial hollow telephone cable to the appropriate locations of telephone poles provided cable introduction part for introducing into the hollow utility poles, it is characterized in.

The telephone cable mentioned here may be a metal cable or an optical fiber cable. The same applies to the outdoor line for subscribers. The connection unit installed at the lower part of the hollow telephone pole connects the core of the telephone cable and the core of the outdoor line for the subscriber, but simply connects both cores. In some cases, the optical signal is converted into an electric signal (or vice versa) between the two core wires, or the signal is amplified.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 3 show one embodiment of the present invention. In the figure, reference numeral 1 denotes a hollow power pole made of a steel pipe pole or the like, and a pair of holes 3 facing in opposite directions are formed in an upper middle portion of the hollow power pole 1. Elbows 5 with flanges are attached to these holes 3 respectively. The flanged elbow 5 is formed by integrally forming a flange portion 9 at one end of the elbow portion 7 and forming a surface extending from the inner surface of the elbow portion 7 to the outer surface of the flange portion 9 into a smooth trumpet-shaped curved surface. It is. The flanged elbow 5 has a flange portion 9 outside the hollow telephone pole 1,
The elbow part 7 is attached so as to be located inside the hollow electric pole 1. The end of the elbow 7 opposite to the flange 9 faces downward.

In order to mount the flanged elbow 5,
In the hole 3 of the hollow electric pole 1, a steel plate 11 and a rubber packing sheet 13 which are curved in accordance with the outer peripheral surface of the electric pole are fixed by screws 15 (see FIG. 2). A vertically long hole 1 is formed in the backing plate 11 so that the elbow 7 can be inserted.
7, and a hole 19 having an inner diameter slightly smaller than the outer diameter of the elbow portion 7 is formed in the packing sheet 13 in order to maintain watertightness (see FIG. 3). Elbow with flange 5
Is fixed to the hollow telephone pole 1 by fixing the upper and lower sides of the flange portion 9 with screws 21.

A guide pipe 23 such as a plastic corrugated pipe is connected to the downward end of the elbow 7, and the guide pipe 23 is lowered into the hollow electric pole 1. On the other hand, an opening 25 is formed in the lower part (near the ground) of the hollow telephone pole 1, and a connection unit 29 is installed behind the opening 25. The guide pipe 2
The lower end of 3 is open near this connection unit 29. The opening 25 can be sealed with a lid 27 that can be opened and closed.

At the upper middle part of the hollow telephone pole 1, a suspension line 33 of a telephone cable 31 is retained. The telephone cable 31 supported by the suspension line 33 is introduced into the hollow telephone pole 1 from a cable introduction portion 35 provided at an upper intermediate portion of the hollow telephone pole 1, pulled down, further introduced into the connection unit 29, and The necessary core connections are made internally. In some cases, the telephone cable is laid underground. In this case, the telephone cable is introduced into the hollow telephone pole from a portion buried in the ground of the hollow telephone pole.

Since the telephone pole structure has the above-described configuration, wiring of the outdoor line for the subscriber can be easily performed as follows. First the lower lid 2 7 hollow utility pole 1 open, feeding the wire-passing wire 37 from the lower end opening of one of the guide pipe 23. Which guide pipe 23
Is determined based on whether or not the opening of the flanged elbow 5 at the upper end faces the subscriber who is going to lay an outdoor line. When the through wire 37 passes through the guide pipe 23 and the flanged elbow 5, exits the hollow telephone pole 1, and hangs down on the ground, the outdoor wire for the subscriber is connected to the end of the through wire. Thereafter, by pulling back the wire 37, the outdoor wire for the subscriber is drawn into the guide pipe 23 from the flanged elbow 5 and the end thereof is connected to the guide pipe 23.
Pull out from the lower end opening of. Thereafter, the outdoor line for the subscriber is removed from the wire 37 and connected to the connection unit 29. The left side of FIG. 1 shows a state in which one end of the outdoor line 39 for a subscriber is connected to the connection unit 29 as described above. The outdoor line 39 for the subscriber, which is drawn out of the hollow electric pole 1 from the flanged elbow 5, is wired to the subscriber's house.

As described above, in this power pole structure, since the outdoor line for the subscriber is drawn out from the upper middle portion of the hollow power pole, a power line can be installed on the upper end U of the hollow power pole 1, Attachment can be done without any trouble. In addition, the power line and electric pole accessories attached to the upper end U of the hollow electric pole 1 do not obstruct the wiring of the outdoor line for the subscriber. In addition, since the pair of flanged elbows 5 are attached with the openings facing in opposite directions, it is possible to wire an outdoor line to subscribers in all directions. In FIG. 1, reference numeral 41 denotes a cap covering the upper end of the hollow telephone pole 1.

FIG. 4 shows another embodiment of the present invention. In this electric pole structure, the inner surface (the surface on the side of the hollow electric pole 1) of the flange portion 9 of the flanged elbow 5 is a curved surface that matches the curvature of the surface of the hollow electric pole 1. In this manner, the backing plate and the packing sheet used in the above embodiment can be omitted (only the packing sheet may be used). The other parts are the same as those of the above embodiment, and the same parts are denoted by the same reference numerals and description thereof will be omitted.

In the above embodiment, a case was described in which two holes were formed in a hollow electric pole and a flanged elbow was attached to each of the holes. However, the number of flanged elbows to be attached to the hollow electric pole (the number of holes to be formed) was described. Can be one, three or four. However, in the case of one, the direction of the external opening of the flanged elbow (the direction in which the wire is fed out) is only one direction, so that when the subscriber is on the opposite side to the direction of the opening, wiring becomes difficult. Therefore, it is preferable that the number of flanged elbows attached to the hollow telephone pole is two to four, and in the case of two, the openings are directed in opposite directions as in the above embodiment, and in the case of three, the openings are three-way. In the case of four, the openings are formed so as to face four directions. If in this way, it is possible to arbitrarily select the feeding direction of the wire-passing the wire through the subscriber's location, it is easy to wire the subscriber outdoor line. When two to four holes are formed, the holes may be formed with different heights.

[0017]

As described above, according to the present invention, in a telephone pole structure for telephone cables in which wiring work for outdoor lines for subscribers can be performed on the ground, a power line is installed at the upper end of a hollow telephone pole. In addition, the utility pole accessories can be attached, and the upper end of the hollow utility pole can be effectively used. In addition, even if a power line or a power pole accessory is attached to the upper end of the hollow power pole, the wiring does not interfere with the wiring of the outdoor line for the subscriber, so that the wiring of the outdoor line for the subscriber can be easily performed. If there are two flanged elbows
The openings of the flanged elbows face in opposite directions, 3
In the case of two, the opening of the flanged elbow faces three directions,
In the case of two, the opening of the flanged elbow faces four directions
In the direction of the feeder wire extension according to the position of the subscriber
Can be arbitrarily selected, and wiring of outdoor lines for subscribers can be performed easily.
You.

[Brief description of the drawings]

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

FIG. 2 is a transverse sectional view taken along line AA of FIG.

3A is a front view and FIG. 3B is a cross-sectional view taken along line BB of FIG. 1A in a state in which a backing plate and a packing sheet used for the utility pole structure of FIG. 1 are stacked.

FIG. 4 is a cross-sectional view showing another embodiment of the utility pole structure according to the present invention.

[Explanation of symbols]

 1: Hollow power pole 3: Hole 5: Elbow with flange 7: Elbow 9: Flange 23: Guide pipe 25: Opening 27: Opening / closing lid 29: Connection unit 31: Telephone cable 35: Cable introduction part 37: Communication wire 39: Outdoor line for subscribers

Continuation of front page (56) References JP-A-6-2766651 (JP, A) JP-A-2-17819 (JP, A) JP-A-10-23642 (JP, A) JP-A-57-55224 (JP) , U) Japanese Utility Model Hei 4-111227 (JP, U) Japanese Utility Model Application Sho 59-44619 (JP, U) Japanese Utility Model Utility Model Utility Model 59-78828 (JP, U) Japanese Utility Model Utility Model Utility Model 60-34722 (JP, U) 32-12276 (JP, Y1) (58) Field surveyed (Int. Cl. ⁷ , DB name) H02G ^7/ 00-7/22

Claims (1)

(57) [Claims] 1. Two or four holes are provided at the upper middle part of a hollow telephone pole so that three holes face in opposite directions in two cases.
In the case of, turn to 3 directions, in the case of 4, turn to 4 directions
A flanged elbow having a flange portion at one end of the elbow portion at each hole portion, and a surface from the inner surface of the elbow portion to the outer surface of the flange portion being a trumpet-shaped smooth curved surface, A flange portion is mounted outside the hollow power pole, and an elbow portion is positioned inside the hollow power pole. An opening having an opening / closing lid is provided at a lower portion of the hollow power pole, and a telephone cable and a subscriber are provided at the back of the opening. A connection unit to which an outdoor wire for a person is connected, a guide pipe is connected to an end of an elbow portion located in the hollow telephone pole, and the guide pipe is pulled down into the hollow telephone pole, and a lower end of the guide pipe is connected. A cable introducing portion for introducing a telephone cable into the hollow telephone pole at an appropriate position of the hollow telephone pole. Utility pole structure.