JPH0431777Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a support wire lead-in device for leading overhead power lines and communication lines such as telephone lines and telegraph lines into the premises through the same lead-in support. It is related to.

(Prior art) In order to run power lines and communication lines through the same lead-in support, it is necessary to separate the electricity lines and power lines in order to prevent interference with induction of the power lines into the communication lines. A support wire lead-in device such as that shown in Publication No. 154226/1983 is used. That is,
As shown in FIG. 3, this type of conventional wire lead-in device for a pole has a box 53 for attaching a wire protection tube inside a wire insertion opening 52 provided in the upper pipe wall of a lead-in strut 51. A straight wire protection tube 55 is installed so that the periphery of the opening 54 provided on one side is attached to the inner periphery of the wire insertion port 52, and is inserted into the wire insertion hole 53a transparently provided in the box 53.
The wire protection tube 55 is attached to the box 53 for protection, and the wire protection tube 55 is installed inside the support 51, and the inside of the support 51 is partitioned to isolate the power line and the communication line. It is something that can be passed through.

(Problems to be Solved by the Invention) However, since such a conventional device uses a straight hard wire protection tube 55 as the wire protection tube 55, the wire protection tube 55 is connected to the box 53. If you connect the box 53 and the wire protection tube 55 before setting up the support column 51, you will not be able to insert the wire protection tube 55 into the support column 51 from the opening 54. Hold the wire protection tube 55 from the lower end of the support 51, insert it into the box 53, and insert your hand into the support 51 through the working opening 56 formed on the opposite side of the wire insertion opening 52 of the support 51.
The wire protection tube 55 is inserted into the box 51 to hold the box 53 and screwed from the outside.The installation work is troublesome, and since the wire protection tube 55 cannot be bent, it is connected to a protector etc. attached to the outside of the support column 51. In order to do this, the connection must be made via a separately prepared flexible wire protection tube 57, and the support 51 requires a working opening 56, and the working opening 56 is closed after the box 53 is installed. There are various problems such as the need to close the box with the cover plate 58 and the like, and the attachment of the box 53 and the wire protection tube 55 to the support column 51 must be done before the support column 51 is erected.

(Means for Solving the Problems) The present invention has been completed with the aim of solving the above-mentioned conventional problems and creating a wire lead-in device for a pole that facilitates the work of attaching a wire protection tube to a pole. in,
The upper tube wall is provided with a tubular wire entry support with a wire insertion port, a flange is provided on the rim of the opening that comes into contact with the outer peripheral surface of the wire insertion port, and the bottom plate is provided with a wire insertion hole. It consists of a transparent protection box, a flexible wire protection tube whose upper end is connected to the wire insertion hole, and a front cover with an opening for wire entry at the lower part, and the protection box has the flexible wire protection tube connected to the flexible wire protection tube. A flexible wire protection tube is inserted into the support from the wire insertion port and fixed to the outer peripheral surface of the wire insertion port with the collar, and the front cover is configured to cover the opening of the box body from the outside. Further, an equipment storage box is attached to the lower part of the support column, and the lower end of the flexible wire protection tube is directly connected to the equipment storage box.

(Example) Next, an example of the present invention will be described in detail with reference to FIGS. 1 and 2.

1 is a tubular support for leading in electric wires;
An electric wire insertion opening 2 is provided in the upper tube wall for introducing electric wires such as communication lines such as telephone lines and telegraph lines or electric wires such as power lines into the support column 1. 3 is the wire insertion port 2
The protective box 3 is equipped with a flange 5 on the edge of the front opening 4 that comes into contact with the outer circumferential surface of the wire insertion port 2, and has a wire insertion hole in the bottom plate 8. 8a is transparent, and the upper end of a flexible wire protection tube 7 such as a flexible synthetic resin bellows tube is connected in advance to the wire insertion hole 8a of the protection box 3 before installation on the support 1. There is. The protective box 3 is fitted into the wire insertion port 2 with the flexible wire protection tube 7 connected thereto being inserted into the support 1 from the wire insertion port 2, and then fitted around the periphery of the opening 4. The inner surface of the stretched flange portion 5 is brought into contact with the outer circumferential surface of the wire insertion port 2, and is attached with screws 6. Reference numeral 9 denotes an equipment storage box attached to the lower outer side of the support column 1, and the lower end of the flexible wire protection tube 7 is connected to the equipment storage box 9. 10 is a front cover whose lower part is an opening 11 for leading in electric wires,
The front cover 10 is for covering the opening 4 of the box body 3 from the outside. That is, on the front surface, the front peripheral frame part 12 is fitted into the low step part 5a provided on the upper outer surface of the collar part 5 of the box body 3, and the locking claws 13, 13 provided at the lower ends of both sides of the front peripheral frame part 12 are fitted.
A locking groove portion 1 provided at the lower end of the low step portion 14 of the collar portion 5
5, 15, and insert the screws through the through holes 17, 7 provided in the flange 16 stretched around the periphery of the front cover 10, and then insert the screws into the screw holes 18 provided in the flange 5 of the protection box 3. are installed together. In addition, 19
is a flexible wire protection tube for protecting the secondary side wires coming from the equipment storage box 9.

(Function) In the device configured as described above, a communication wire such as a telephone line is drawn in from the opening 4 at the lower end of the protection box 3 attached to the inside of the wire insertion port 2 of the pillar 1.
The electric wire is passed through a flexible electric wire protection tube 7 whose upper end is connected to the electric wire insertion hole 8a of the bottom plate 8 of the protection box 3, and introduced into the equipment storage box 9 attached to the lower outer side of the support column 1. However, since the flexible wire protection tube 7 is flexible, the upper end is connected to the protection box 3. Insert the lower end of the flexible wire protection tube 7 into the support 1 from the wire insertion opening 2 of the support 1, and then insert it into the protection box 3.
can be fitted into the wire insertion port 2 and the inner surface of the flange 5 can be attached to the outer peripheral surface of the wire insertion port 2, making the installation work extremely easy.
Not only does it eliminate the need to provide a working opening on the back of the support column 1 to attach the wire protection tube 7 to the wire insertion port 2, but since the flexible wire protection tube 7 is bendable, you can prepare one of a predetermined length and attach it to the device. It can be directly connected to the storage box 9, and there is no need to prepare a separate connecting pipe. Furthermore, since the flexible wire protection tube 7 is bendable, the installation work can be done after the support 1 is erected, so there is an advantage that the installation work can be done whenever necessary.

(Effects of the invention) As is clear from the above explanation, the invention has the following effects:
It is not only easy to attach the wire protection tube to the column, but it is also economical because there is no need to provide extra openings in the column or prepare extra parts such as connecting tubes to improve workability.

Therefore, the present invention has extremely great practical value as it eliminates the problems of the conventional electric wire lead-in devices for poles of this type.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view showing an embodiment of the present invention, Fig. 2 is an exploded perspective view of the main parts of the invention, and Fig. 3 is a representative side of a conventional support wire lead-in device. It is a partially cutaway side view. DESCRIPTION OF SYMBOLS 1... Prop, 2... Wire insertion port, 3... Protection box, 4... Opening, 5... Flange, 7... Flexible wire protection tube, 8... Bottom plate, 9... Equipment Storage box, 10...Front cover.

Claims (1)

[Scope of utility model registration request] A tubular wire lead-in support 1 having a wire insertion port 2 in the upper tube wall, a flange 5 on the edge of the opening 4 that comes into contact with the outer peripheral surface of the wire insertion port 2, and a bottom plate portion 8. includes a protection box 3 with a wire insertion hole 8a therethrough, a flexible wire protection tube 7 whose upper end is connected to the wire insertion hole 8a, and a wire lead-in opening 11 at the bottom.
The protective box 3 has a front cover 10 with a front cover 10, and the protective box 3 is configured by inserting the flexible wire protection tube 7 connected thereto into the support 1 through the wire insertion opening 2, and holding the collar 5 to the wire insertion opening. 2, the front cover 10 is attached to cover the opening 4 of the box body 3 from the outside, and an equipment storage box 9 is attached to the lower part of the column 1. An electric wire lead-in device for a support pole, characterized in that the lower end of the flexible electric wire protection tube 7 is directly connected to the lower end of the flexible electric wire protection tube 7.