JP2587061Y2 - Single-phase three-wire distribution board voltage conversion structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for switching the charging section voltage of a single-phase three-wire distribution board to 100 V or 200 V.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 5 and 6, a single-phase three-wire switchboard 11 has a main breaker 12 and a plurality of branch breakers 13a, 13b, 13c, 13d arranged in a row on a base. The main bars 14, 15, 16 and the branch bars 14
a, 15a and 16a. The main bar 15 is a neutral phase, and the main bars 14, 1
6 is an X phase or a Y phase. In the single-phase three-wire distribution board 11, when switching the charging section voltage, for example, to change the branch breaker 13a from 100V to 200V, the terminal screw 13a of the connection hole 13aR on the right side of the branch breaker 13a is used.
R 'is loosened, the screw 17 of the neutral phase main bar 15 is removed, the branch bar 15a is removed, and then one end of the branch bar 14a is fitted into the connection hole 13aR on the right side of the branch breaker 13a, and the terminal screw 13aR' is tightened. Master Bar 1
4, the other end of the branch bar 14a was placed and the screw 17 was tightened and fixed. In addition, the branch breaker 13b is changed from 100V to 2
To set the voltage to 00 V, loosen the terminal screw 13bR 'of the connection hole 13bR on the right side of the branch breaker 13b, remove the screw 17 on the neutral phase main bar 15, remove the branch bar 15a, and then remove the connection bar on the right side of the branch breaker 13b. One end of the branch bar 17a is fitted into the 13bR, the terminal screw 13bR 'is tightened, and the other end of the branch bar 16a is mounted on the main bar 16, and the screw 17 is tightened and fixed.

[0003]

The above-described conventional single-phase three-wire distribution board charging part voltage conversion structure has a structure in which the branch bar 15a connected to the neutral phase main bar 15 is connected to the main bar 14. However, when connecting to the branch bar 14a and connecting to the main bar 16, the branch bar 16a must be changed, and there is a drawback that the shape of the branch bar differs depending on the position of the branch breaker for switching the charging section voltage. Further, three types of branch bars including the neutral phase are required, and there is a disadvantage that parts management becomes complicated. The screw 6 of the neutral phase main bar 4
There is a risk that the screws 6 may be lost to completely remove the screws 6. Further, this operation has to be performed with both hands, and has a disadvantage that it involves danger.

[0004]

SUMMARY OF THE INVENTION In view of the above-described problems of the conventional single-phase three-wire distribution board charging section voltage conversion structure, an object of the present invention is to provide a simple structure to easily and safely increase the charging section voltage to 100 V.
Or a single-phase three-wire switchboard that can convert to 200V
In the configuration, a main breaker and a plurality of branch breakers are mounted and fixed in a horizontal line on a base, and a main bar and a branch bar are provided between the main breaker and the plurality of branch breakers. In the single-phase three-wire power distribution panel connected by conductive bars and covered with these breakers, the main bar has a neutral-phase main bar as an upper stage and another X-phase main bar or Y-phase main bar. one was disposed middle, the other as the lower, distribution bar to be connected to the middle of the main trunk bars fitted screwed into connecting hole of one pole of the branch breakers, connection holes in the other pole of the branch breaker , One end of a branch bar is fitted and screwed, a screw hole is provided at the other end of the branch bar, and a first set screw is provided. Both ends of the connection plate are bent at right angles in opposite directions to each other and the upper plate and A lower plate is formed, and a first notch is formed in the upper main bar. Provided, the lower trunk bar comprises a second notch in the trunk bar and substantially the same height of the upper provided with a distribution bar erected branches from the main trunk bar, first the lower plate of the connecting plate (1) Screwed with a set screw, and the upper plate of the connection plate is rotated about 90 degrees around the first set screw.
This allows the first notch or the second notch to be alternately fitted into the first notch or the second notch.
That is, the connection plate is screwed and fixed by the second set screw in a state where the screw holes of the upper plate are aligned .

[0005]

[Action] Loosen the first set screw screwed to the lower plate of the connection plate ,
Loosen the second set screw fitted in the first cutout of the neutral phase bus bar . Then, connect the connecting plate to the first notch of the neutral phase bus bar.
And turn the connection plate about 90 degrees around the first set screw
X-phase bus bar or Y-phase bus bar
And screwed into it. In addition, 200
Conversion from V to 100 V is performed in the reverse manner.

[0006]

1 to 4 show an embodiment of a single-phase three-wire distribution board according to the present invention. Hereinafter, the present invention will be described with reference to these drawings.

In a single-phase three-wire switchboard 1, a main breaker 2 and a plurality of branch breakers 3a, 3b, 3c, 3d are mounted and fixed on a base in a row, and the main breaker 2 and the plurality of branch breakers are connected to each other. Between the main bars 4, 5, 6 and branch bars 5a, 5a '
And are connected by a conductive bar. The main bar is arranged with the neutral phase main bar 5 as the upper stage, the X phase main bar 4 as the middle stage, and the Y phase main bar 6 as the lower stage. The branch bar 5a has one end connected to the branch breakers 3a, 3b, 3c, 3d.
Are screwed into the connection holes 3aL, 3bL, 3cL, 3dL of the left pole of the left side, and the other end is integrally connected to the X-phase main bar 4 in the middle stage. Right pole of branch breakers 3a, 3b, 3c, 3d
One end of the branch bar 5a 'is screwed into the connection hole 3aR, 3bR, 3cR, 3dR, and the other end is provided with a screw hole and provided with a first set screw 8. Both ends of the connection plate 7 are bent at right angles in opposite directions to form an upper plate 7a and a lower plate 7b. The upper neutral phase main bar 5 has a first notch 5b, and the lower Y phase main bar. The bar 6 is provided with a branch bar 6a that branches from the main bar and stands upright, has a second notch 6b at substantially the same height as the upper X-phase main bar 4, and connects the lower plate 7b of the connecting plate 7 to the upper plate. Screwed by the first set screw 8, and the upper plate 7 a of the connection plate 7 is rotated by about 90 degrees around the first set screw 8.
By first notch 5b or the second cutout portion 6b
Into the first notch 5b or the second notch
The second set screw 9 is screwed and fixed with the screw hole of the upper plate 7a of the connection plate 7 aligned with 6b .

In the single-phase three-wire distribution board 1 configured as described above, the charging section voltage of the branch breaker 3a is set to 100V.
When the voltage is changed from 200 V to 200 V, the first set screw 8 is loosened, and the second set screw 9 of the first cutout 5b is loosened. Then, the connection plate 7 is rotated from the first notch 5b to the second notch 6b around the first set screw 8 as an axis, and the second set screw 9 is fitted in the second notch 9b in the second notch 6b. 9 and the first set screw 8. Charger voltage 2
Switching from 00V to 100V may be performed in the reverse manner.

In the embodiment, the X-phase main bar is disposed at the middle level and the Y-phase main bar is disposed at the lower level. However, there is no problem if the X-phase main bar is disposed at the lower level and the Y-phase main bar is disposed at the middle level. .

[0010]

According to the present invention, the charging section voltage conversion structure of the single-phase three-wire distribution board has a main breaker and a plurality of branch breakers mounted and fixed on a base in a horizontal line. In a single-phase three-wire power distribution panel in which a plurality of branch breakers are connected by a conductive bar composed of a main bar and a branch bar, and these breakers are covered, the main bar is a neutral phase main bar. The upper stage, one of the other X-phase main bar or the Y-phase main bar is disposed in the middle stage, the other is disposed in the lower stage, and the branch bar connected to the middle main bar is connected to the connection hole of one pole of the branch breaker. It fitted screwed, wherein the connection hole of the branch breakers of the other pole fitted screwed one end of the distribution bar, the other end of the distribution bar comprising a first set screw provided with a screw hole, the connection plate Both ends are bent at right angles in opposite directions to form upper and lower plates , The upper trunk bar comprises a first notch, the second to the upper trunk bar and substantially the same height with the lower trunk bar provided with distribution bar erected branches from the main trunk bar A notch is provided, the lower plate of the connection plate is screwed with a first set screw, and the upper plate of the connection plate is rotated by about 90 degrees around the first set screw .
Ri, the first notch or to enable fitted alternately in the second notch, the upper plate of the connecting plate to said first notch or said second notch
Is screwed and fixed with the second set screw in a state where the screw holes are aligned with each other, so that the charging part voltage conversion operation can be performed with one hand, which is easy and safe, and there is no need to remove the screw, so that the screw is not lost. . In addition, the operation of converting the charging section voltage is the same in all branch breakers, and the charging section voltage is converted. <br/> The shape of the branch bar does not differ depending on the position of the branch breaker, and the conversion of the charging section voltage is reliably performed. There is an effect that can be.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a single-phase three-wire distribution board according to the present invention.

FIG. 2 is a perspective view of a main part of the single-phase three-wire switchboard according to the present invention;

FIG. 3 is a perspective view of a main part of the single-phase three-wire switchboard according to the present invention;

FIG. 4 is a perspective view of a main part of the single-phase three-wire distribution board according to the present invention.

FIG. 5 is an explanatory diagram of a conventional single-phase three-wire distribution board.

FIG. 6 is a side view of a main part of a conventional single-phase three-wire distribution board.

[Explanation of symbols]

1 ... single-phase three-wire distribution board 2 ... main breaker 3
a, 3b, 3c, 3d ... branch breaker, 4 ... X
Phase master bar, 5 ... Neutral phase master bar, 5a, 5a '
..Branch bar, 5b first notch, 6 ... Y-phase main bar, 6b ... second notch, 7 ... connection plate, 8.
..First set screws, 9... Second set screws.

Claims (1)

(57) [Scope of request for utility model registration] 1. A main breaker and a plurality of branch breakers are mounted and fixed in a row on a base, and the main breaker and the plurality of branch breakers are connected by a conductive bar including a main bar and a branch bar. In the single-phase three-wire switchboard with these breakers covered, the main bar has a neutral-phase main bar as an upper stage, and one of the other X-phase main bars or the Y-phase main bar has a middle stage. and disposed the other as lower, distribution bar to be connected to the middle of the main trunk bars fitted screwed into connecting hole of one pole of the branch breakers, wherein the connecting hole of the other pole of the branch breakers of the distribution bar One end is fitted and screwed , the other end of the branch bar is provided with a screw hole and a first set screw, and both ends of the connection plate are bent at right angles in opposite directions to form an upper plate and a lower plate. The upper main bar has a first notch, and the lower main bar has a first notch. The main bar is provided with a branch bar that branches from the main bar and is provided with a second notch at substantially the same height as the upper main bar. The lower plate of the connection plate is screwed with a first set screw. And turning the upper plate of the connection plate about 90 degrees about the first set screw .
Ri, the first notch or to enable fitted alternately in the second notch, the upper plate of the connecting plate to said first notch or said second notch
The charging part voltage conversion structure of the single-phase three-wire distribution board, wherein the screw holes are aligned and screwed and fixed with a second set screw.