JPH0625849Y2 - Insulation cleat for branching / pulling in low voltage lines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an insulating cleat used for branching / pulling in a low voltage line.

[Prior Art] As a power distribution system for branching / drawing a low-voltage line, in recent years, it has been particularly desired to beautify and simplify a pillar. For example, the undergrounding of distribution lines is progressing as part of urban planning, but there is a large aesthetic disparity between the underground part and the aerial wiring part in the vicinity of the underground area, so beautifying and simplifying the pillars in the aerial wiring part. Has become even more desirable.

Therefore, the traditional arm for retracting the pole has been eliminated,
A method has been proposed in which a protective fuse and a branch line are housed in a branch retractable box with an opening / closing lid by using a small-sized utility pole. This branch lead-in box is directly attached to the utility pole, and is attached along the utility pole according to the outer diameter of the utility pole.

[Problems to be solved by the invention] By the way, when the lead-in end of the low-voltage line is drawn into the branch draw-in box, no special consideration has been given in the past, and there is no separate arrangement, and most of the draw-ins are drawn randomly. It was
In addition, when connecting the drop end that has been drawn into the branch drop box to a branch line or connecting a drop line to this branch line, a large tension is applied to the branch line and the wire fuse connected to the branch line during connection work. There was a concern to join.

Therefore, the object of this invention is to divide the low voltage line lead-in ends into phases when connecting the branch line and the low voltage line by pulling the low voltage line lead-in end into the branch lead-in box containing the branch line. In addition to arranging it, it is sandwiched and fixed to provide an insulating cleat that does not apply tension to the branch line or the lead-in wire connected to the branch line even when tension is applied to the low voltage line.

[Means for Solving the Problems] In order to achieve the above-mentioned object, an insulating cleat for branching / pulling in a low voltage wire according to the present invention is configured as follows.

That is, an insulation cleat that is attached to a utility pole or a branch entry box at the top of the branch entry box, and is capable of sandwiching the lead-in ends of the low-voltage lines by dividing them separately into three parts,
The intermediate divided body is fixed to the mounting bracket, the left and right divided bodies are detachably fixed to the intermediate divided body with mounting screws, and the holding hole for holding the lead-in end of the low voltage wire is formed on the abutting surface of the divided bodies. A cover having an insertion groove through which the lead-in end of the low voltage line is formed is attached to the whole.

[Operation] The above-described insulating cleat can hold the pull-in ends of the low-voltage lines for each phase, and the pull-in ends of the low-voltage lines are arranged in order. Therefore, it is easy to connect to the branch line in the branch service box.

In addition, since it is sandwiched by the sandwiching hole, even if tension is applied to the low voltage wire, the tension does not reach the branch line or the wire fuse.

Also, since the cover is attached to the whole, it is also suitable for beautifying the pillars and can prevent the occurrence of bird damage.

[Embodiment] A branch of a low-voltage line according to the present invention will be described with reference to the accompanying drawings.
An example of the retractable insulating cleat will be described.

FIG. 1 is a perspective view showing an embodiment of an insulating cleat for branching / pulling according to the present invention. A main body 3 capable of holding a pull-in end 2 of a low-voltage wire having a screw terminal 1 connected to the end, It is made up of a mounting bracket 4 and a cover 5.

As shown in FIGS. 2 and 3, the main body portion 3 has a three-divided structure, and the intermediate divided body 6 is held by the holding metal fittings 7 and the mounting metal fittings 4 are attached.
And the left and right divided bodies 8 and 9 are detachably fixed to the intermediate divided body 6 with a mounting screw 10. Reference numeral 11 denotes a holding hole formed on the abutting surface of the divided bodies, which allows the lead-in ends 2 of the low voltage wires to be separately arranged and held by each phase. This pinching hole 1
As shown in FIG. 3, 1 is formed by abutting recesses 12 formed on the abutting surface of each divided body. The left and right divided bodies 8 and 9 can be moved by loosening the mounting screw 10, the holding hole 11 can be expanded, and the left and right divided bodies can be removed. The cover 5 is formed with an insertion groove 5a through which the lead-in end 2 of the low voltage wire is inserted. The mounting bracket 4 shown in the figure has a structure to be mounted on the branch retractable box 13 and has a side plate 4
A has a screw hole 4b.

4 and 5 show the state of attachment to the branch retractable box 13. The branch lead-in box 13 is composed of a main body 14 and an opening / closing lid 15, and can be mounted along a telephone pole by a mounting bracket 16 provided on the rear side of the main body. The mounting bracket 16 is a horizontal arm 16a mounted vertically on the back surface of the main body 14.
The vertical arm 16b is fixed between the horizontal arms 16a by bolts 17 and is attached to the utility pole by inserting a tightening band into a through hole 16c formed in the vertical arm 16b. As shown in the figure, the attachment to the branch draw-in box 13 is performed by bolts 17 for fixing the upper horizontal arm 16a and the vertical arm 16b. That is, the side plate 4 of the fitting 4 of the insulating cleat A
Place the insulating cleat A on the upper part of the branch retractable box 13 with the horizontal arm 16a and the upper part of the vertical arm 16b covered, and fasten the mounting bracket 4, the horizontal arm 16a, and the vertical arm 16b with the bolt 17. If the installation is complete. After that, the branch lead-in box 13 may be fixed to the telephone pole as described above.

For example, in the case of a three-phase four-wire system, the common phase A and B are arranged in the front part, and the neutral phase and the power phase are arranged in the rear part as the phase-wise divisional arrangement state of the lead-in end 2 of the low voltage line in the insulation cleat A. However, it is preferable for maintenance and inspection if the branch lines in the branch lead-in box 13 are also connected in an arrangement corresponding to this.

Next, an example of a branching / pulling-in system for a low voltage line using the insulating cleat A will be described with reference to FIG.

The drawing shows a method in which the secondary side electric wire 20 of the transformer 19 is connected to the switch 18, and the screw terminal derived from the switch 18 is connected to the branch line in the branch drop box 13 and connected to the drop line 21. The lead-in end 2 of the low-voltage line 22 branched from the container 18 is divided and sandwiched by the insulating cleat A for each phase, and the screw terminal 1 at that end is introduced into the branch lead-in box 13 and connected to the branch line. Both of the methods of connecting with the device 21 are shown. In other symbols, 23 is an insulator and 24
Is a metal fitting, 25 is a DV insulator, 26 is a messenger wire, 27 is a hanger, 28 is an intermediate support metal fitting, and 29 is a high-voltage wire. The branching / pulling-in method is merely an example, and the use of the insulating cleat according to the present invention is not limited to this.

[Effects of the Invention] The insulating cleat according to the present invention is as described above, and it is possible to arrange the lead-in end of the low-voltage line for each phase separately.
Easy maintenance and inspection. Also, since the pull-in end is clamped in the clamp hole, even if tension is applied to the low-voltage line side, tension will be exerted on the branch line and the wire fuse connected to the end of the branch line, and there is a concern that the connection part may come off. Absent. In addition, since the insulation cleat is covered with a cover, it is also suitable for beautifying the pillars and there is no risk of bird damage, providing the most suitable members for use in the branching / pulling-in system of low voltage lines in recent years. It was possible.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an insulating cleat according to the present invention, FIG. 2 is a perspective view with a cover removed, FIG. 3 is a perspective view with the cover disassembled, and FIG. FIG. 5 is a side view in a state of being attached to an upper part of a branch drawing box, FIG. 5 is a rear view of the same, and FIG. 6 is an explanatory view showing an example of a branching / pulling-in system of a low voltage line. A ... Insulation cleat, 3 ... Main body 4 ... Mounting bracket, 5 ... Cover 6 ... Intermediate split body, 7 ... Holding bracket 8, 9 ... Left and right split body 10 ... Mounting screw, 11 ... … Clamping hole 13 …… Branch entry box, 22 …… Low voltage line

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Masato Kurata 3-7-1, Ichibancho, Aoba-ku, Sendai-shi, Miyagi Tohoku Electric Power Co., Inc. (72) Shinjiro Ito, Awaji-cho, Chuo-ku, Osaka-shi, Osaka 5-13 No. Osaka Fuse Co., Ltd. (72) Inventor Yutaka Asahina 3-5-13 Awajicho, Chuo-ku, Osaka-shi, Osaka, Osaka Fuse Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. An insulating cleat that is mounted on a utility pole or a branch service box at the upper part of the branch service box, and is capable of sandwiching the service ends of the low-voltage lines by dividing them separately for each phase and having an intermediate partition body. It is fixed to the metal fittings, the left and right divided bodies are detachably fixed to the intermediate divided body with mounting screws, and a holding hole for holding the lead-in end of the low-voltage line is formed on the abutting surface of the divided bodies. A branch of the low-voltage line in which a cover with an insertion groove for passing the lead-in end is attached to the whole.
Insulation cleat for retracting.