JPH0511658Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) The present invention relates to a branch line connection device installed at a branch part of a low-voltage main line in a building, and in particular, the invention relates to a branch line connection device installed at a branch part of a low-voltage main line etc. The present invention relates to a flat cable branching device that is configured so that a branching device provided in a flat cable can be directly connected without using a branch line or the like.

(Prior art) As a low-voltage trunk line constructed as a power supply route in a high-rise building, etc., a bus duct or a large-capacity power supply cable is usually placed on an electric shaft, and the power supply means is branched to each floor via a branching means. The system is configured to handle the power demand on each floor.

In addition, when using a power supply cable, there are problems with handling performance when using a regular round cable, so recently a type of cable commonly called a flat cable has been increasingly used. ing.

The flat cable is constructed by arranging a large number of cables in parallel and covering the periphery with an insulator.
This cable is constructed as shown in Japanese Utility Model Publication No. 58-141573, etc.

In such conventional trunk cables, a branch sleeve is fixed to the branch part, a branch line is connected to the sleeve, and a breaker, branch switch, etc. is installed at the end of the branch line. Such means are used to provide such information.

For example, the branching means shown in Japanese Utility Model Application Publication No. 59-146891 has a configuration as shown in FIGS. 5 and 5a, in which the insulator 5 of the low-voltage trunk cable 1 is peeled off and the part The conductive wire 3 is exposed, and the branch sleeve 40 is crimped and fixed to the conductive wire 3. Then, means is used to fix the terminal of the branch wire to the terminal portion formed to protrude from the branch sleeve 40 using bolts or the like.

Further, the conventional example shown in Japanese Utility Model Application Publication No. 58-141573 has a configuration as shown in FIG.
The end of the branch line 47 is fixed together with the conductor of the cable, and the branch line is configured to be able to be drawn out directly from the branch sleeve.

Then, the branch line drawing means configured as described above is connected to each phase line of the low-voltage main line, and these are connected to the branch connection device on each floor, and the load of the demand destination is connected via the breaker or switch mechanism. I am trying to connect it to the side power supply line.

(Problem to be solved by the invention) In the conventional trunk cable connection device as described above, a branch line of a predetermined length is connected to the connecting part of the trunk line, and the branch line is connected to the branch line. It is necessary to construct a branching device by connecting a switchbox or the like to the switchbox and accommodating a breaker, a switch mechanism, etc. in the switchbox.

Therefore, when the power demand on the load side changes and the power supply capacity of the branch section is increased and the cable on the load side is replaced, it is necessary to install the branch line with a larger capacity than the branch sleeve. It is necessary to replace the switchboxes and the like for those branch lines with new ones.

However, with the above-mentioned conventional equipment, when changing the connection of branch lines to the main cable, it is impossible to perform the work while the main cable is energized. Although it is necessary to carry out such construction work on holidays or at night when there is no demand for electricity, in modern intelligent office buildings, computers and other equipment are constantly running. It has become extremely difficult to schedule power outage days.

Therefore, a problem arises in that it is required to set up a complicated power supply system for computers and the like, such as providing a power supply main line that is separate from the normal main cable.

(Purpose of the invention) The present invention solves the drawbacks of the conventionally used devices as described above, and is configured so that a branching means such as a switch box can be attached directly to the trunk cable. It is an object of the present invention to provide a device configured so that branch line connection work can be performed even when the cable is in a live state.

(Means and effects for solving the problem) The flat cable branching device of the present invention peels off the insulation of the cable to expose the conductor, and the exposed portion of the conductor is covered with a compression sleeve for power supply. is provided to form a branch line connection part, and the branch line connection part is arranged with a step between each cable arranged in parallel, and for each cable, a connection part of the branch line is formed before and after the branch part. A half-shaped connecting member made of an insulating molded product is placed in the part, and each cable is inserted into the groove of the connecting member, and the connecting member is fixed to the cable. This device has an insertion hole for a power supply clip, and is configured so that a plaque line switchbox can be fixed via the power supply clip inserted through the insertion hole.

Furthermore, in the flat cable branching device of the present invention, the cable insulation is peeled off to expose the conductor, and a power supply compression sleeve is provided on the exposed portion of the conductor to connect the branch line. The connection portion of the branch line is arranged with a slight step difference with respect to each cable arranged in parallel, and
The connection member of each of the cables is configured to connect a power supply clip of a plug-in switchbox, and is positioned and fixed to the cable at a position away from the power supply clip of the plug-in switchbox. The fixing means is configured by opposing half-shaped members each having a groove for positioning the cable therein, and the cable is held between the grooves of the member. The plug-in switch box can be configured so that it can be fixed using a connecting means such as a bolt, and the plug-in switch box can be provided while being fixed to the cable by the fixing means.

Further, in the flat cable branching device of the present invention, the above-mentioned plug-in switch box can be configured to accommodate a breaker, branch switch means, branch line connection means, etc.

Therefore, in the flat cable branching device of the present invention, the switchbox can be attached directly to the trunk cable, and the switchbox can be installed while the trunk cable is live. This eliminates the inconvenience of having to choose the day of a power outage to perform work such as reconnecting branch lines.

In addition, main cables with branch sections can be produced in factories, and when installed in a building's electrical shaft, the main cable should be positioned at a position corresponding to the height of the branch section on each floor. The adjustment makes it possible to automatically set the position of each branch. Then, the power supply system can be easily set up by simply connecting the plug-in switch boxes on each floor to the main cable.

(Example) The configuration of the flat cable branching device of the present invention will be described according to the illustrated example.

The embodiment shown in FIG. 1 shows an example in which the trunk cable 1 is formed by three cables, 1R, 1S, and 1T, and each trunk cable 1 is commonly called a flat cable. It consists of a type of cable called

In the trunk cable 1 of the present invention, the insulator 5 is peeled off at the branch part to expose the conductor 3, and the peeled part 6
A branch sleeve 8 is fixed to the exposed portion of the conductor 3. As the branch sleeve 8, for example, a sleeve member made of copper casting and split into two is wound around the conductive wire and fixed by tightening using a tightening means.

In addition, the above-mentioned branch portions of the trunk cables are provided at slightly different heights with respect to the three trunk cables, and when engaging the connecting members to the wires of each phase, the clips are attached. etc. can be easily provided.

A branch attachment means 10 can be provided for attaching a plug-in switch box or the like to the main cable branch having the above-described configuration. This branch attachment means 1
0 is composed of a main body side member 11 and an opposing side member 15 made of insulating molded products, and the main body side member and the opposing side member are formed with a plurality of opposing grooves 12 and 16 for accommodating cables, respectively. At the same time,
A screw hole 14 is provided to secure the two.

The depths of the cable accommodating grooves 12 and 16 are formed to l1 and l2, respectively, and are set in the relationship l=l1+l2 with respect to the width l of the cable 1. Therefore, when the branch attachment means 10 configured as described above is attached to the trunk cable 1, the cables 1R, 1 of each phase of the trunk cable
The intervals between S and 1T can be set constant, and plug-in switch boxes and the like can be easily attached to the trunk cable.

Further, the main body side member 11 of the branch attachment means 10 described above is provided with a large number of clip insertion holes 13 corresponding to the branch means provided on the main cable, and the power supply clip can be inserted through the clip insertion holes 13. By inserting the cable, a plug-in switchbox or the like can be attached directly to the trunk cable.

In an alternative embodiment of the invention shown in FIG. 2, the branch attachment means 10 can be replaced directly with a plug-in switchbox 20. In the case of the plug-in switch box 20 shown in FIG.
A plurality of clip guides 21 are provided at predetermined portions of the main body, corresponding to branch portions provided in the trunk cable.

This clip guide 21 has the same structure as the clip insertion hole provided in the branch attachment means shown in FIG. It is formed by

Further, in the embodiment shown in FIG. 2, a fixing means 24 is provided at the bottom of the plug-in switchbox 20, and the fixing means 24 includes a two-way switch having a structure similar to that of the branch attachment means shown in FIG. A main body side member 25 and an opposing side member 26 formed in a split shape are arranged. These main body side members and opposing side members each have a groove 2 for accommodating the trunk cable.
A plurality of bolts 7 and 27a are provided, and a screw hole 28 for a bolt 29 connecting the two main body side members and the opposing side member is provided.

When the fixing means 24 is attached to the main cable, each cable is fixed at a predetermined interval inside the grooves 27, 27a, and the plug-in switch box 20 is fixed to the main cable. will be made possible.

The external structure of the main body of the plug-in switch box 20 shown in FIG. Furthermore, the fixing means 25 provided at the bottom of the switchbox is also made of an insulator such as vinyl chloride.

The embodiment of the present invention shown in FIG. 3 shows an example in which a power supply clip 22 is provided integrally with a plug-in switch box 20, with the power supply clip 22 protruding from the clip guide 21 thereof. In this embodiment, the fixing means 25 provided at the lower part of the switchbox main body has grooves 27 for accommodating the main cables arranged at predetermined intervals in a manner similar to that shown in FIG. .

Further, a clip guide 21 provided on the main body of the plug-in switch box 20 is provided with protruding power feeding clips 22 that are engaged with the branching portions of the respective phase lines. When the switch box 20 is attached to the main cable, a feed clip 22 is attached to the branch sleeve of each cable so that the branches can be connected.

When the switchbox constructed as described above is attached to the trunk cable, the plug-in switchbox 20 of the present invention is connected in the state shown in FIG. 4.

In the example shown in FIG. 4, a plug-in switchbox 20 is attached to the main cable 1 using a fixing means 24, and a power supply clip formed protruding from a breaker 23 provided inside the switchbox 20 is attached. 22 from the clip guide 21 toward the cable. Then, the operation of fixing the breaker 23 to the plug-in switch box and the operation of connecting the power feeding clip 22 to the main cable can be performed simultaneously.

By configuring as described above, it is not necessary to connect the breaker etc. to the plug-in switch box 20 via a branch line from the main cable, and it is possible to form a branch directly to the main cable. I can do it.

In addition, in addition to means such as the breaker 23 and switches, it is possible to provide multiple load-side branch lines, etc., as necessary, at the branch section provided in the main cable as described above. This means that many branch lines on the load side can be easily connected.

Then, the branch line 3
1 can be pulled out and power can be supplied to a predetermined load side through the electric conduit 30.

By configuring as described above, in the flat cable branching device of the present invention, when the power supply capacity of the load side cable increases at each plug-in switch box, the power supply capacity of the load side cable increases. On the other hand, it is possible to increase the power supply capacity at a branch by simply replacing the power supply clip of another large-capacity breaker, etc., without directly replacing the branch. Therefore, it is possible to easily connect a large-capacity load-side power supply line without taking measures such as power outage to the main cable.

In addition, in the embodiment of the present invention described above, the branch attachment means or fixing means is a member provided with a groove or the like having a shape corresponding to the cross section of the main cable, and has a structure that can be easily attached to the main cable. Therefore, the mechanism such as the branch attachment means is not limited to what is shown in the drawings, and any material can be used as long as it has good insulation properties and workability. It is possible to use the following materials.

Furthermore, the shape of the branch sleeve provided on the main cable and the power feeding clip connected to the sleeve can be arbitrarily configured as long as the engagement relationship between the two can be set well.

(Effects of the invention) Since the flat cable branching device of the invention has the above-described configuration, when a flat cable is used as a trunk cable, it is possible to easily connect a branch part from the trunk cable. Can be configured.

In addition, by configuring the branch sleeve portion of the branch section provided on the trunk cable of this device as a member capable of supplying large amounts of power, it is possible to easily increase the power supply capacity at the branch section, and when working to increase the power supply capacity, the connection work can be carried out simply by attaching a large-capacity terminal power supply clip.

Therefore, when using the branching means of the present invention, necessary branch line reconnection work can be performed while the main cable remains energized, making it easier to take measures such as power outages, especially on holidays. Without a doubt,
The construction work can be carried out at any time.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a means for forming a branch part for a main cable according to the present invention, Fig. 2 is an explanatory diagram of a case where a plug-in switchbox is attached to a main cable, and Fig. 3 is another embodiment of the present invention. An explanatory diagram of an example, FIG. 4 is a side view when a plug-in switchbox is provided for a trunk cable, FIG. 5 is a plan view of a conventional branch forming means, FIG. 5a is a sectional view thereof, and FIG. 6 is a perspective view of another conventional example. Symbols in the diagram: 1... Trunk cable, 3... Conductor, 5... Insulator, 8... Branch sleeve, 10...
... Branch attachment means, 11... Main body side member, 13
... Clip insertion hole, 15 ... Opposite side member, 20
... Plug-in switch box, 21 ... Clip guide, 22 ... Power supply clip, 24 ...
Fixing means.

Claims (1)

[Claims for Utility Model Registration] (1) Peeling off the insulation of the cable to expose the conductor, and providing a compression sleeve for power supply to the exposed portion of the conductor to form a branch line connection, The connection portion of the branch line is arranged with a step between each cable arranged in parallel, and for each cable, a half-shaped insulating molded product is provided at the front and rear portions of the branch portion. With each cable inserted into the groove of the connecting member, the connecting member is fixed to the cable, and one of the connecting members is provided with an insertion hole for the power supply clip, and the cable is inserted into the groove of the connecting member. 1. A flat cable branching device characterized in that a plug-in switchbox can be fixed via a power supply clip inserted through a hole. (2) Peeling off the insulation of the cable to expose the conductor, and providing a compression sleeve for power supply to the exposed portion of the conductor to form a connection portion of the branch line, and forming the connection portion of the branch line, Each of the cables arranged in parallel is arranged with a slight difference in level, and a power supply clip of a plug-in switch box is connected to the connection part of each cable, and the plug-in switch A fixing means for positioning and fixing the cable to the cable is arranged at a position away from the power supply clip of the box,
The fixing means is constituted by opposing half-shaped members each having a groove for positioning the cable therein, and the cable is fixed by a connecting means such as a bolt while the cable is held in the groove of the member. A branching device for a flat cable, characterized in that it is configured such that a plug-in switch box can be provided while the cable is fixed to the cable by the fixing means. (3) The utility model according to claim 1 or 2, wherein the fixing means is configured to accommodate a breaker, a branch switch means, a branch line connection means, etc. Branch cable branching device.