KR200367190Y1 - Electric branch box - Google Patents

Abstract

The present invention has excellent expandability when expanded by separately provided branch terminals electrically connected to branch lines or incoming lines, and can replace transformers, cutout switches, low voltage lines in an uninterruptible state, and easily supply voltage from outside. It is about branching into a low voltage line that can be checked.

To this end, the present invention is a terminal having a case forming an external appearance, the terminal is installed in the case and electrically connected to an external power line, a plurality of fastening grooves open downward and the partition wall spaced apart a predetermined distance by a locking projection protruding at both ends thereof is provided. A branch terminal between the block and the terminal block and the partition wall and having an insertion hole formed on a surface facing the partition wall and inserted into an insertion hole of the branch terminal, and an insertion hole for inserting a branch line or a lead line is bored at one end thereof; The other end is protruded to the outside of the fastening groove of the terminal block is fastened by the nut is characterized in that the fastener is provided for independently binding the branch terminal on the terminal block.

Description

Branch line for low voltage line {ELECTRIC BRANCH BOX}

The present invention relates to branching into a low voltage line, and more particularly, the branch terminal electrically connected to a branch line or an incoming line is provided with excellent expandability when expanded, and replaces a transformer or a cutout switch and a low voltage line in an uninterrupted state. It is possible to, and to branch to a low-voltage line that can easily check the supply voltage from the outside.

In general, the branch box is used to electrically connect the branch line and the drop line with the voltage drop through the transformer or to extend the branch line. In the conventional case, the branch box is crimped at the end of the branch line or the lead line, which is a low voltage line, and then bolted to the inside of the box. It assembled and connected on the installed panel.

However, the connection method as described above has a problem in that the low voltage line or the lead wire is shaken by the wind, so that the bolt is loosened for long periods of use, resulting in poor contact, and thus deterioration of the connection part.

In addition, the branch box of the structure described above was able to simply electrically connect the branch line and the incoming line, and the branch line and the branch line, but it was extremely ineffective in replacing a transformer or a cutout switch or a branch line which is a low voltage line. There was a problem.

That is, since a connection terminal is provided inside the box and an external power line compressed in the sleeve must be connected to the connection terminal, a work process for crimping the sleeve is added, and the bypass cable used in the uninterruptible method is actually located inside the box. There was a problem that the connection terminal could not be connected.

The present invention has been made to solve the above problems, the purpose of which is to provide a branch terminal or branch line electrically connected to the branch terminal independently low-voltage line that is excellent in expansion when expanded and further improve the electrical connection force To provide branching.

Another object of the present invention is to provide a connection terminal to the enclosure (case) to enable the parallel connection in the replacement of transformer, cutout switch, low voltage line, etc. low voltage line to facilitate the replacement operation in the uninterrupted state To provide branching.

Another object of the present invention is to install a voltmeter on the front of the enclosure (case) so that the supply voltage can be checked without additional equipment, and branched into a low voltage line that can actively cope with tap switching of the columnar transformer during voltage drop. To provide.

1 is a perspective view of a branch line with a low pressure line according to the present invention.

Figure 2 is a perspective view showing the internal structure of the low-voltage line branch box according to the present invention.

3 is a detailed view of the terminal block disclosed in FIG. 2.

4 is an exploded perspective view of a portion of the terminal block disclosed in FIG. 3.

5 is a detailed view of the connection terminal of the low-voltage line branch box according to the present invention.

Figure 6 is an illustration of the use of low-voltage line branch box according to the present invention.

* Description of the symbols for the main parts of the drawings *

10: case

20: connection terminal

31: cover

40: terminal block

50: seating member

60: branch terminal

70: columnar transformer

80: distribution line

90: transformer car

The present invention, in order to achieve the above technical problem, a predetermined distance by a case forming an appearance, a plurality of fastening grooves installed in the case and electrically connected to an external power line and open downward and a locking jaw protruding at both ends thereof. A terminal block provided with a partition wall spaced apart from each other, a branch terminal positioned between the terminal block and the partition wall and having an insertion hole formed on a surface facing the partition wall, which is embedded in an insertion hole of the branch terminal, and one end of which is inserted into a branch line or a lead wire The insertion hole is drilled, and the other end thereof is protruded outward from the fastening groove of the terminal block and fastened by a nut, so that the fastener is provided to independently bind the branch terminal on the terminal block.

In addition, the insertion hole of the branch terminal is formed in the incision surface on both sides thereof, and a seating groove is formed in the bottom surface of the incision surface so that the branch line or the inlet line can be firmly connected at the time of fastening, and one end of the fastener to prevent the rotation when fastening It is characterized in that the locking projections are further formed on the incision surface.

In addition, the branch terminal and the terminal block is characterized in that the thread is further formed to prevent the rotation when the fastening on the contact surface.

The case may further include a voltmeter electrically connected to the terminal block so that the supply voltage can be easily read on the outer front portion thereof.

In addition, the case is provided with a connection terminal formed with a plurality of terminal holes to easily connect the terminal block and the external power line, characterized in that the connection terminal is electrically connected to the terminal block.

The case may further include a seating member having a seating surface having a stepped step so that a plurality of terminal blocks may be arranged in the casing.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the branch line to the low pressure line according to the present invention.

1 is a perspective view of a branch line with a low pressure line according to the present invention. Figure 2 is a perspective view showing the internal structure of the low-voltage line branch box according to the present invention. 3 is a detailed view of the terminal block disclosed in FIG. 2. 4 is an exploded perspective view of a portion of the terminal block disclosed in FIG. 3. 5 is a detailed view of the connection terminal of the low-voltage line branch box according to the present invention. Figure 6 is an illustration of the use of low-voltage line branch box according to the present invention.

First, as shown in FIG. 1, an embodiment according to the present invention may be electrically connected to a case 10 forming an appearance and a branch line 11 or a lead line 12 installed and inserted into the case 10. Terminal block (not shown) provided with branch terminals, a voltmeter 13 mounted on the front of the case 10 so as to be electrically connected to the terminal block and to read the supply voltage from the outside, and the secondary side lowering line of the columnar transformer A connection terminal 20 mounted on an outer surface of the case 10 is provided for electrical connection between the external power line 71 and the terminal block. Reference numeral 31 denotes a cover for placing and protecting the connection terminal 20 inside thereof, 33 is a lead hole of a power line electrically connected to the connection terminal 20, and 32 denotes a case 31 ) Fastening member for fixing to the outside.

In the above configuration, the case 10 is provided with a door 14 that can be opened and closed on its front surface and its bottom surface is opened. In addition, a pair of protrusions are formed on the rear surface so that the poles can be easily installed on the completed poles, and then, the inserts are inserted into the protrusions, and then the bolts are fastened to the ends thereof.

Next, the terminal block is for electrically connecting the branch line 11 or the lead wire 12 drawn through the bottom of the case 10, and the terminal block is electrically connected to each branch line 11 or the lead wire 12. Branch terminals are provided.

That is, as shown in Figures 2 to 4, the terminal block 40 is an electrically conductive conductor and is electrically connected to an external power line (for example, transformer secondary side lowering line 71) through the connection terminal 20. The partition 43 is provided at a predetermined distance apart by a plurality of fastening grooves 41 having a lower opening and a locking jaw 42 protruding from both ends thereof. The terminal block 40 is fixedly installed on the seating surface of the seating member 50 having a stepped step.

In addition, the branch terminal 60 is bound to the terminal block 40 by the fastener 61 while being electrically connected to the branch line 11 or the lead wire 12, when the branch line 11 or the lead wire 12 is expanded. It is composed of one unit to easily expand and is located in the space portion between the terminal block 40 and the partition wall 43.

That is, the branch terminal 60 has an insertion hole 62 is formed on the surface facing the partition 43, the insertion hole 62 is a fastening portion to prevent the fastener 61 is rotated during the fastening The incision surface 64 in which the locking projection 63 of 61 is embedded is formed at both sides thereof, and the recess is formed in the bottom surface of the incision surface 64 so that the branch line 11 or the inlet line 12 can be firmly connected at the time of fastening. 65 is formed.

Here, the fastener 61 is for binding the branch terminal 60 to the terminal block 40. For this purpose, one side end of the fastener 61 may be a cutaway surface as described above to prevent rotation during fastening. A locking protrusion 63 inherent in 64 is formed, and an insertion hole 66 for inserting the branch line 11 or the lead line 12 is drilled, and the other end thereof is an insertion hole 62 of the branch terminal 60. ) Is protruding outward from the fastening groove 41 of the terminal block 40 while being embedded in the terminal block 40 and fastened by the nut 67.

According to the above configuration, the terminal block 40 and the diaphragm 43 are spaced apart by a predetermined distance from the locking jaw 42, and the fastening holes 61 are positioned with the branch terminal 60 in the spaced portion. It is bound to the terminal block 40. At this time, the branch terminal 60 is somewhat movable between the terminal block 40 and the diaphragm 43, the threads 44, 68 are formed on the joint surface of the terminal block 40 and the branch terminal 60, The fastening threads 44 and 68 interlock with each other to prevent rotation and help to securely engage.

On the other hand, the terminal blocks 40 are provided in one to three rows as necessary, in the case of three rows, a three-phase power line is connected to each connection terminal 20, and the lead wires 21 of each connection terminal 20 are connected. The terminal 22 is electrically connected to the terminal block 40.

That is, the terminal block 40 is fixed to the seating surface of the seating member 50 having a stepped step with the diaphragm 43, so that the upper end is projected more than the middle and the middle is projected more than the lower end. Since the branch line 11 or the lead wire 12 is electrically connected to the branch terminal 60 which is bound to each terminal block 40, it is possible to prevent mutual contact. Reference numeral 45 is a fastening bolt for integrally binding the terminal block 40, the diaphragm 43, and the seating member 50 (where the seating member 50 is attached to the case 10). .

Next, the voltmeter 13 is for externally reading the voltage of the power supplied from the columnar transformer (not shown) through the external power line 71, and for this purpose, the voltmeter 13 is mounted on the outer front side of the case 10. The voltmeter lead wire 15 is electrically connected to the terminal block 40 by the terminal terminal 16.

Accordingly, when a voltage drop occurs, it is possible to quickly compensate with an appropriate voltage through tap switching of the column transformer.

Next, the connection terminal 20 is configured to be electrically connected to the terminal block 40 by the lead wire 21 and the connection terminal 22 and to connect the external power line 71. This will be described in detail with reference to FIG. 5.

As shown in the figure, the connection terminal 20 is partially inserted into the through hole 17 drilled in the case 10, and the fastening portion 21a fastened and fixed by the fastening nut 18 inside the case 10. And a through hole 23a formed at the center of the fastening part 21a, and a cutout surface 24a is formed at both sides, and the external power line 71 is fastened when the binding nut 23b is fastened. A terminal hole 20a having a seating groove 25a formed on the bottom surface of the incision surface 24a and a terminal hole 20a is inserted into the terminal hole 20a so as to be firmly connected, and one end thereof is an end of the external power line 71. Insertion hole '21b is formed to be inserted and the locking projection' 22b inherent in the incision surface '24a is formed to prevent rotation when the binding nut 23b is fastened, and the other end thereof is a terminal hole. It consists of a male terminal 20b which protrudes to the outside through the through hole 23a of the 20a and is fastened by the binding nut 23b.

Therefore, when the end of the external power line 71 is inserted into the insertion hole '21b of the male terminal 20b, and the fastening nut 23b is tightened from the outside, the engaging projection 22b of the male terminal 20b is the cut surface ( Since it is a state inherent in 24a), it is moved inside the terminal hole 20a while the rotation is suppressed. Accordingly, the external power line 71 is firmly connected to the connection terminal 20 by being seated in the mounting groove 25a.

In addition, the connection terminal 20 is provided with a plurality of terminal holes 20a at one end of the fastening portion 21a, one of which is for connecting an external power line 71, and the other is a bypass cable during an uninterruptible operation. Alternatively, it is a spare terminal for connecting the secondary side of a transformer transformer or other external power line.

In addition, one to three connection terminals 20 are installed as necessary, and when three are installed, three-phase power lines are electrically connected to each connection terminal 20 through the above-described process.

Next, the cover 31 and the fastening member 32 are for preventing contact and protecting the connection terminal from rain, dust, and the like. As shown in FIG. 1, the cover 31 may insert an external power line 71. A lead hole 33 is formed to be. Of course, when the external power line is not connected to the connection terminal 20, the cover 31 has a sealed shape.

And the fastening member 32 is formed in the form of a protrusion around the connection terminal 20, so that the cover 31 is fixed by this binding projection.

Hereinafter, with reference to the above-described technical configuration and Figure 6 will be described an example of the use of low-voltage line branch box according to the present invention.

First, when supplying the voltage drop from the columnar transformer 70 to the consumer, an external power line 71 extending from the columnar transformer 70 to the connection terminal 20 provided on the outer surface of the case 10; Secondary line of transformer).

Accordingly, when a current flows through the terminal block 40 in the case 10 electrically connected to the connection terminal 20, and the lead wire 12 is connected to the branch terminal 60 bound to the terminal block 40. It is possible to supply electricity to the customer.

On the other hand, if you want to replace the columnar transformer 70 or the cutout switch 72, the line should be opened from the distribution line 80. At this time, in order to solve the inconvenience of customers due to power failure, the uninterrupted electric method is implemented (in the case of the conventional uninterrupted electric method, it is necessary to loosen all the inlet wires connected to the terminal block in the case and electrically connect it with the secondary side of the transformer train. Not only is it cumbersome, but it also takes longer work time).

According to the present invention, when performing an uninterruptible work, the primary side 91 (extra-high pressure) is connected to the distribution line 80 by using the transformer transformer 90 for movement, and the secondary side 92 (low pressure) is outside the case 10. It is connected to the spare terminal hole of the connection terminal 20 provided on the side to make a parallel operation state with the columnar transformer 70.

Subsequently, the columnar transformer 70, the primary side cutout switch 72 and the secondary side down line 71 are separated to bring the columnar transformer 70 into a voltageless state and then replace the columnar transformer 70 (cutout switch). Since the replacement operation for 72 is obvious from the replacement operation of the columnar transformer 70, detailed description thereof will be omitted).

Therefore, the secondary side 92 of the transformer train 90 for a mobile terminal is connected to the spare terminal of the connection terminal 20 of the case 10 without having to loosen the lead wires 12 electrically connected to the terminal block 40 in the case 10. By connecting to the hole, it is possible to supply power to the customer in an uninterrupted state.

As described in detail above, according to the present invention, the electrical connection between the branch line and the lead wire, the branch line and the branch line can be easily performed, and the transformer or the cutout switch, the low voltage line, etc. can be easily replaced in an uninterruptible state. Will be.

As a result, it is possible to solve the inconvenience of separately connecting the secondary side and each incoming line of the mobile transformer train in the uninterrupted construction method, there is a very excellent effect that can reduce the construction cost by reducing the work time.

In addition, since the branch terminal electrically connected to the branch line or the incoming line is provided independently, only the branch terminal needs to be added at the time of expansion, thereby providing excellent scalability.

In addition, since a voltmeter is provided at the front of the enclosure (case) so that the supply voltage can be read without additional equipment, there is an effect that it can actively cope with tap switching of the columnar transformer during voltage drop.

Claims (6)

Case forming the appearance, A terminal block provided in the case and electrically connected to an external power line and having a partition wall spaced apart a predetermined distance by a plurality of fastening grooves open downward and a locking step protruding from both ends thereof; A branch terminal positioned between the terminal block and the partition wall and having an insertion hole formed on a surface facing the partition wall; Is inserted into the insertion hole of the branch terminal is inserted into the insertion hole for receiving the branch line or the lead line, one end thereof is protruded to the outside of the fastening groove of the terminal block is fastened by a nut to the branch terminal to the Branching with a low voltage line, characterized in that a fastener for fastening independently on the terminal block. The method of claim 1, The insertion hole of the branch terminal is formed in the incision surface on both sides thereof and a seating groove is formed in the bottom surface of the incision surface so as to connect the branch line or the inlet line when the fastening, One end of the fastener is branched to a low-pressure line, characterized in that the locking projections are further formed on the incision surface to prevent the rotation during the fastening. The method of claim 1, The branch terminal and the terminal block branched to the low-voltage line, characterized in that the thread is further formed to prevent the rotation when fastening on the contact surface. The method of claim 1, The case branches to a low voltage line, characterized in that the outer front side is further provided with a voltmeter electrically connected to the terminal block so that the supply voltage can be easily read. The method of claim 1, The case is provided with a connection terminal having a plurality of terminal holes formed so as to easily connect the terminal block and the external power line, the connection terminal is branched into a low voltage line, characterized in that electrically connected to the terminal block. The method of claim 1, The case is branched into a low-voltage line, characterized in that the seating member is further provided with a seating surface having a stepped stepped step so that the terminal block can be arranged in a plurality of rows.