JPS5812527Y2 - Case for ground-mounted switching connection board - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a case for a ground-mounted switching connection board that switches and connects a communication feeder cable unit and a distribution cable.

Generally, this type of box has a wall having a rectangular cross section and has an opening/closing door with locking means on the front side.

The feeder cable penetrates the bottom wall of the case and is housed inside the case, and a connector for connecting the feeder cable unit and the distribution cable is also housed within the plane.

However, since this switching connection board is usually installed on the road, it is susceptible to being tampered with by removing the lock, or being damaged by external forces such as a car collision, as well as corrosion, moisture, etc.
They have the disadvantage that they are easily damaged by unfavorable environments such as temperature, dust, and dew, and the items stored inside are easily affected by the surrounding environment.

Furthermore, if a switching connection board with this structure is used for installation on a pole as it is, it has the disadvantage that it is wide due to the required capacity and easily receives wind pressure, requiring a sturdy mounting tool.

An object of the present invention is to provide a case for a ground-mounted switching connection board that can prevent damage from external forces and the surrounding environment, and can also be used for installation on a pole.

Embodiments of the present invention will be described in detail with reference to the drawings. FIGS. 1 and 2 show a box 10 according to the present invention, and this box has an inner box main body 12 as shown in FIG. The box body 16 has a double structure and is separated from the outer case body 14 surrounding the inner case body.

These inner and outer box bodies 12 and 14 are made of metal such as steel, and as shown in FIG.
etc., and is removably fixed to the inner and outer case body 12.1.
4 are removably fixed to each other at a predetermined distance by bolted spacers 20°20.

These inner and outer case bodies 12.14 have opening/closing doors 26.28 attached to both ends of the back walls 22, 24 by hinges 30.32, as shown in FIG. A locking means 34 such as a lock (external case body 1
4 locking means are shown).

Therefore, the left and right door portions of the opening/closing doors 26, 28 have an oval shape and constitute side walls and stop walls of the case body 12, 14.

In addition, with such a structure, even when the opening/closing doors 26 and 28 are opened, the amount of protrusion from the box is small, so they do not obstruct passage, and the operator can easily perform switching operations inside the box. Therefore, it is preferable.

Furthermore, in order to reduce wind pressure resistance from the front, the corners 26a28a of the opening/closing door 26.28 are chamfered in the illustrated embodiment.

The feeder cables 36, 36' are housed in recesses 38 provided in the outer surface of the back wall of the inner housing body 12, as shown in FIG.

As shown in FIG. 4, these feeder cables 36° 36' are branched from the main cable 42 within the manhole 40, rise above the ground directly below the switching connection panel, and are introduced into the box 10. However, the gas dam section 36 provided at the end thereof
a , 36 a' is located within the recess 38 .

The front surface (front side) of the recess 38 is open as shown in FIG. 2, and the feeder cable 36,36' having the gas dam portions 36a, 36a' is housed through this opening 38a, and then the feeder cable 36,36' is stored through this opening 38a. is closed by bolting the front plate 42.

Note that the rear surface of the recess 38 is also closed by bolting the rear plate 44.

Wire 36 expanded at the end of feeder cable 36.36'
b, 36b' are connected to a connector 46 disposed within the inner case body 12 (see FIG. 4).

The distribution cable 48 is connected to the connector 46, penetrates the inner and outer case bodies 12, 14, and is laid to a predetermined subscriber.

The internal box body 12 of the box 10 of the present invention can be used as it is as a box for a pole-mounted switching connection board by using the recess 38 as a space for attaching to a utility pole.

Figure 3 shows this state, where the box has a dent 38 at the telephone pole 50.
It is fitted to the telephone pole so as to surround half the circumference of the telephone pole, and is attached to the telephone pole using a band (not shown).

In this case, as shown in FIG. 4, the feeder cable 36, 36' is pulled up from underground along the utility pole 50, passed through the bottom wall of the box body 12, and introduced into the center of the box body. It is connected to connectors 46 arranged on both sides.

As shown in Figure 3, this box body has a deep depth so as to surround the telephone pole 50, so the width W is sufficiently smaller than that of a conventional rectangular case for the same volume, and therefore it has a high wind pressure resistance. is also significantly smaller, so the mounting strength can be reduced.

Note that the same reference numerals as in the front of FIGS. 3 and 4 indicate the same parts, and the reference numeral 52 indicates a pull-up pipe and 54 indicates a workbench.

According to the present invention, as mentioned above, the case of the ground-mounted switching connection board has a double structure, so that storage devices such as connectors and cables are protected against external forces, corrosion, humidity, temperature, dust, and dew condensation. The device is effectively protected from unfavorable environments such as, etc., and if the external case body is damaged, it can be easily replaced, so the protection of the device can be maintained for a long period of time.

Furthermore, by using the recess in the internal box body, which is the gas dam storage space for the feeder cable, as the utility pole mounting surface, it can be installed on a utility pole without receiving large wind pressure, so it can be used commonly as a pole-mounted switching connection board. It is economical.

[Brief explanation of the drawing]

Figure 1 is a front view of the box of the ground-mounted switching connection board according to the present invention, Figure 2 is a sectional view taken along line A-A in Figure 1, and Figure 3 is a part of the box of the present invention. FIG. 4 is a horizontal sectional view of a pole-mounted switching connection board, and a schematic diagram of two switching connection boards, a ground-mounted type and a pole-mounted type. 10...Box, 12...Inner box main body, 14...Outer box main body, 16...Box main body, 20... ...Spacer, 26°28...
...Opening/closing door, 36.36'...Feeder cable, 36a, 36a'...Gas dam part, 36
b, 36 b'... unit, 38...
...Dent, 46...Connector, 48...
・Wiring cable.

Claims (1)

[Scope of utility model registration request] A ground-mounted switching connection board consisting of a box body that is fixed to the ground and has a space in which a feeder cable rising from underground is housed, and a space in which a connector for connecting the feeder cable unit and the distribution cable is housed. In the box, the box is composed of an inner case body including an opening/closing door, and an outer case body detachably attached to surround the inner case body and including the opening/closing door, and housing the feeder cable. The space to
A case for a ground-mounted switching connection board, characterized in that the case is located from a gas dam storage recess provided on the back of the outer surface of the internal case body.