JP3018942B2 - Single-phase three-wire distribution board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single-phase three-wire switchboard, and more particularly to a single-phase three-wire switchboard having an improved structure for converting a voltage supplied to a branch breaker.

[0002]

2. Description of the Related Art Conventionally, as a structure for converting a voltage supplied to a branch breaker in a single-phase three-wire distribution board, there is a structure disclosed in Japanese Utility Model Laid-Open No. 25907/1993. As shown in FIG. 41, the L1 phase conductor bar 3, the L2 phase conductor bar 13, and the N phase conductor bar 23, which supply power,
The main constituent members are a branch breaker 31, 41 of 0 V or 200 V, a connection terminal 100 connected to one pole of the branch breakers 31, 41, and a substantially L-shaped connection bar 101. Then, the L1 phase conductor bar 3 is connected to the other pole of the branch breakers 31, 41, and the first piece 101a of the connection bar 101 is connected to the connection terminal 100 with the first screw 102, and the second piece 102a
To the notch 13a of the L2-phase conductor bar 13 with the second screw 103.
Alternatively, a different voltage, for example, 100 V or 200 V is supplied to the branch breakers 31 and 41 by connecting to either one of the notches 23 a of the N-phase conductor bar 23.

[0003]

The above-described single-phase three-wire distribution board can convert the voltage supplied to the branch breaker with a simple structure. However, in order to convert the voltage, loosen the first screw and the second screw, rotate the connection bar around the first screw, insert the second screw into the other notch, and fasten the second screw. In addition, multiple operations such as fastening the first screw are required, which is not only troublesome,
Construction took time.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a single-phase three-wire switchboard which can easily convert a voltage supplied to a branch breaker. is there.

[0005]

According to a first aspect of the present invention, there is provided a single-phase three-wire switchboard, which is arranged side by side with a box mounting base at a predetermined distance from the box mounting base. An L1 phase conductor bar, an L2 phase conductor bar, and an N phase conductor bar, each of which has a plurality of terminal connecting members connected in the longitudinal direction thereof, and a power supply side terminal. Two-pole 100 V or 200 V branch breaker having a load side terminal and attached to a box base so as to be orthogonal to each conductor bar, one pole of a power supply side terminal of the branch breaker and a terminal of an N-phase conductor bar A substantially rectangular parallelepiped 100V unit having a first metal fitting for connecting the connecting body and a second metal fitting for connecting the other pole to the terminal connecting body of the L1 phase conductor bar or the L2 phase conductor bar; and one of the power supply side terminals of the branch breaker And the terminal connector of the L1 phase conductor bar It has a configuration comprising a substantially rectangular 200V unit having a fourth bracket connecting the third brackets and other pole and L2 phase conductor bar terminal connection of.

According to a second aspect of the present invention, there is provided a single-phase three-wire switchboard, wherein the terminal connection body of each conductor bar according to the first aspect is shaped like a plug blade to receive each pole of a power supply side terminal of each branch breaker. Each of the first to fourth metal fittings of the 100 V and 200 V units is formed in a blade shape, and has a receiving blade-shaped holding portion for holding the terminal connector, and a plug inserted into each pole of the power supply side terminal of the branch breaker. It has a configuration in which a blade-shaped clamped portion is provided.

The single-phase three-wire switchboard according to the third aspect of the present invention provides a 100V branch breaker according to the first or second aspect,
A first insertion portion having a convex shape is provided, and the first insertion portion is inserted into the 100V unit, so that the conductor bar and the 10V are inserted.
The configuration is such that a concave first inserted portion to which the 0 V branch breaker is electrically connected is provided.

According to a fourth aspect of the present invention, there is provided a single-phase three-wire switchboard, wherein the 200V unit according to any one of the first to third aspects is provided with a convex second insertion portion, and the second insertion portion is inserted into a 200V branch breaker. By inserting the part, the conductor bar and 20
It has a configuration in which a concave second insertion portion to which the 0V branch breaker is electrically connected is provided.

A single-phase three-wire switchboard according to a fifth aspect has a configuration in which the 100 V and 200 V units according to the first to fourth aspects are formed in different colors.

According to a sixth aspect of the present invention, there is provided a single-phase three-wire type distribution board, wherein at least one of the 100 V and 200 V units according to the first to fifth aspects is provided with an energization display member for indicating whether or not electricity is flowing. Configuration.

The single-phase three-wire switchboard according to claim 7 has a configuration in which at least one of the 100 V and 200 V units according to claims 1 to 6 is provided with a power supply display member for displaying a voltage.

In the single-phase three-wire switchboard according to claim 8, at least one of the 100V and 200V units according to claims 1 to 7 is provided with a covering member for covering the adjacent N-phase conductor bar. It has a configuration.

The single-phase three-wire switchboard according to the ninth aspect has a structure in which at least one of the 100 V and 200 V units according to the first to eighth aspects is provided with a temperature display member for displaying its own temperature. I have.

According to a tenth aspect of the present invention, there is provided a single-phase three-wire distribution board, wherein a load wire can be quickly connected to at least one of the load-side terminals of the 100 V and 200 V branch breakers according to the first to ninth aspects. The terminal part is provided.

According to the eleventh aspect of the present invention, there is provided a single-phase three-wire switchboard, wherein at least one of the load-side terminals of the 100 V and 200 V branch breakers according to the first to tenth aspects has a resistance measuring unit for measuring an insulation resistance. The configuration is provided.

According to a twelfth aspect of the present invention, there is provided a single-phase three-wire switchboard, wherein at least one of the load-side terminals of the 100V and 200V branch breakers according to the first to eleventh aspects is fitted to the main body of the branch breaker. To make it detachable.

Further, the single-phase three-wire switchboard according to the thirteenth aspect is provided with a box mounting base according to the first to twelfth aspects.
The storage unit for storing at least one of the V unit and the 200 V unit is provided.

[0018]

According to the first aspect of the present invention, a 100 V unit is used when 100 V is supplied to the 100 V branch breaker, and a 200 V unit is used when 200 V is supplied to the 200 V branch breaker. Each conductor bar is easily connected to the 100V and 200V branch breakers with the metal fittings.

According to the construction of the second aspect, in addition to the function of the first aspect, a plug-shaped terminal connection body is provided at the holding portion of the 100 V and 200 V units.
Since the power supply side terminal of each of the receiving blade-shaped branch breakers can be inserted into the pinched portion of the unit,
The connection time is reduced.

According to a third aspect of the present invention, in addition to the function of the first or second aspect, if the first insertion portion is not inserted into the first inserted portion, the conductor bar and the 100V branch breaker are connected to the 100V unit. Therefore, 200 V is not supplied to the 100 V branch breaker because it is not electrically connected.

According to the structure of the fourth aspect, in addition to the function of any one of the first to third aspects, if the second insertion portion is not inserted into the second insertion portion, the conductor bar and the 200V branch breaker are not connected. Since it is not electrically connected by the 200V unit, 200V is not supplied to the 100V branch breaker.

Further, according to the structure of the fifth aspect, in addition to the function of any one of the first to fourth aspects, 100 V and 2 V
Since the 00V unit can be easily identified, erroneous connection is suppressed, and the connection status can be understood at a glance.

According to the configuration of claim 6, in addition to the function of any one of claims 1 to 5, it is possible to confirm whether electricity is flowing to the 100V and 200V units by the power supply display member, and therefore, the use condition is reduced. Understand.

According to the configuration of claim 7, in addition to the function of any one of claims 1 to 6, the voltage flowing through the branch breaker can be confirmed by the power supply display member, so that erroneous connection is further suppressed, You can see the connection status at a glance.

According to the structure of claim 8, in addition to the effect of any of claims 1 to 7, the adjacent N-phase conductor bar is covered with the covering member, so that electric shock is suppressed.

According to the configuration of the ninth aspect, in addition to the operation of any one of the first to eighth aspects, the temperature of the branch breaker can be confirmed by the temperature display member, so that it is possible to detect the occurrence of an abnormality. It will be easier.

According to the configuration of claim 10, in addition to the function of any one of claims 1 to 9, the load wire can be quickly connected to the load side terminal of the branch breaker, so that the construction time can be reduced. I can do it.

According to the configuration of claim 11, in addition to the effect of any one of claims 1 to 10, the insulation resistance can be measured by the resistance measuring section of the branch breaker, which is convenient.

According to the configuration of claim 12, in addition to the function of any one of claims 1 to 11, the load side terminal of the branch breaker can be attached and detached, so that the load side terminal can be removed and the load wire can be connected. Therefore, the construction time can be further reduced.

Further, according to the structure of the thirteenth aspect, in addition to the operation of any one of the first to twelfth aspects, the storage unit can store a total of 10 operations.
Since at least one of the 0V and 200V units can be stored, the fear of loss is reduced.

[0031]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. The single-phase three-wire switchboard A includes a box mounting base 1, a main breaker 2, an L1-phase conductor bar 3,
The main components include the two-phase conductor bar 13, the N-phase conductor bar 23, the 100V branch breaker 31, the 200V branch breaker 41, the 100V unit 51, the 200V unit 61, and the storage unit 71. The members having the same basic functions as those of the related art are denoted by the same reference numerals.

As shown in FIG. 3, the box mounting base 1 mounts a main breaker 2, which will be described later, conductor bars 3, 13, 23, and branch breakers 31, 41, and the like. It is formed in a rectangular flat plate shape. Master breaker 2
It is connected to a single-phase three-wire circuit to open and close the circuit, and has a terminal portion 2a and is attached to the box mounting base 1.

The L1-phase conductor bar 3, the L2-phase conductor bar 13 and the N-phase conductor bar 23 are composed of the main breaker 2 and the branch breakers 31,
41 is electrically connected to supply power to each branch breaker 31, 41. The L1 phase conductor bar 3 is a single-phase three-wire main circuit line L1 phase, and the L2 phase conductor bar 13 is a main circuit line. The L2 phase of the line and the N-phase conductor bar 23 are connected to a neutral conductor. Therefore, between the L1 phase conductor bar 3 and the N phase conductor bar 23, and
A voltage of 100 V is applied between the phase conductor bar 13 and the N phase conductor bar 23, and a voltage of 20 V is applied between the L1 phase conductor bar 3 and the L2 phase conductor bar 13.
A voltage of 0V is supplied.

The L1 phase conductor bar 3 is substantially in the form of a long plate made of a conductive material, has a first main body 4 and a second main body 5, and is disposed on the box mounting base 1. Specifically, the first main body 4 is formed by bending a long plate material into a substantially U-shape, and one end thereof is connected to the terminal portion 2a of the main breaker 2 and the other end is connected to the second main body 5. Connected. 2nd body
5 is a long plate-shaped second main body plate 6 and a plurality of second terminal connecting bodies continuously provided at predetermined intervals in the longitudinal direction of the second main body plate 6.
7,7 ... The second main body plate 6 is disposed on the box mounting base 1 so as to be below the branch breakers 31 and 41 to be described later and to face the longitudinal direction of the box mounting base 1. The second terminal connectors 7, 7,...
And a 200 V unit 51, 61, which is in the form of a long plate, one end of which is connected in a direction orthogonal to the second main body plate 6, and the other end and a substantially central portion of which are box mounting bases 1.
There are plug-shaped second terminal portions 8a and 8b which are vertically provided with respect to.

The L2-phase conductor bar 13 has a substantially elongated plate shape made of a conductive material, has a third main body 14 and a fourth main body 15, and is disposed on the box mounting base 1. Specifically, the third main body 14 is formed by bending a long plate material into a substantially U-shape, and one end thereof is connected to the terminal portion 2a of the main breaker 2 and the other end is connected to the fourth main body 15. Connected. 4th body
Reference numeral 15 denotes a long plate-shaped fourth main body plate 16 and a number of fourth terminal connection bodies continuously provided at predetermined intervals in the longitudinal direction of the fourth main body plate 16.
17,17 ... The fourth main body plate 16 is disposed on the box mounting base 1 so as to be below the branch breakers 31 and 41 to be described later and to be parallel to the second main body plate 6. Are connected to 100V and 200V units 51, 61, which will be described later, and have a long plate shape, one end of which is connected to the fourth main body plate 16 in a direction orthogonal to the fourth main body plate 16. At the other end and substantially in the center, there are plug-shaped fourth terminal portions 18b, 18a which are vertically provided to the box mounting base 1. The fourth terminal 18a is connected to the second terminal 8a of the L1 phase conductor bar 3.
The fourth terminal portion 18b is arranged in parallel with the second terminal portion 8b at a predetermined interval.

The N-phase conductor bar 23 is substantially a long plate made of a conductive material and has a fifth main body 24 and a sixth main body 25.
It is arranged on the box mounting base 1. Specifically, the fifth main body 24 is formed by bending a long plate material into a substantially U-shape, and one end thereof is connected to the terminal portion 2a of the main breaker 2 and the other end is connected to the sixth main body 25. Connected. 6th body 25
Is a long plate-shaped sixth main body plate 26 and a plurality of sixth terminal connection bodies 2 connected at predetermined intervals in the longitudinal direction of the sixth main body plate 26.
7,27 ... The sixth main body plate 26 has an opposing surface 26a
So as to be parallel to the box mounting base 1 at a predetermined interval, and substantially at the center of the box mounting base 1 in the lateral direction, and the second body plate 6 and the fourth body plate 16 It is arranged in between. The sixth terminal connectors 27, 27...
V and 200V units 51 and 61, which are elongated plates, one end of which is connected to the second main body plate 6 in a direction orthogonal to the other, and the other end of which is suspended from the box mounting base 1. A plug-shaped sixth terminal portion 28 is provided. Are arranged symmetrically with respect to the sixth main body plate 26. The sixth terminal portion 28 is located at an intermediate position between the second terminal portion 8a and the fourth terminal portion 18a, and the second terminal portion 8b and the fourth terminal portion 18a.
It is located in the middle of 18b.

The 100V branch breakers 31, 31,... And 200
The V-branch breakers 41, 41... Individually turn on and off the power supply to a load device (not shown). The 100-V branch breakers 31, 31,. It is connected to a voltage of 200 V. Each of the breakers 31 and 41 has two pole power supply terminals 32 and 42 and load terminals 33 and 43, respectively. These terminals 32, 42, 33, 4
Although not shown, 3 is formed in a receiving blade shape so as to insert and press-fit a portion to be clamped of each of the units 51 and 61 described below. The 200V branch breakers 41, 41... Are formed on the side surfaces 41a, 41a.
Has 44. The second inserted portion 44 is connected to a 200 V
This is a substantially rectangular parallelepiped space so that the second insertion portion of the unit 61 is just inserted.

The 100V unit 51 is connected to each of the conductor bars 3, 13, 2
3 to supply 100V to the 100V branch breakers 31, 31,..., A first fitting 52, a second fitting 55, and a first casing.
56 and The first metal fitting 52 is a 100 V branch breaker 31.
Is connected to one pole of the power-supply-side terminal 32 and the sixth terminal connector 27 of the N-phase conductor bar 23, and is made of a conductive material and has a metal fitting body 53 and a clamped portion 54. As shown in FIG. 7, the metal fitting body 53 is formed by bending a metal plate, and has a receiving blade-like holding member for holding the sixth terminal portion 28 of the sixth terminal connector 27 of the N-phase conductor bar 23 at one end. A second attachment hole 53c for attaching the attachment portion 53a to the first casing 56 at a position approximately halfway between one end and the other end, and a first attachment hole 53b for attaching the clamped portion 54 to the other end. Having. The clamped portion 54 is inserted into one of the receiving blade-shaped poles of the power supply side terminal 32 of the 100 V branch breaker 31 and has a substantially cylindrical plug blade shape. 1
It is attached to the attachment hole 53b by caulking or welding. The clamped portion 54 has a length that protrudes more than the first casing 56.

The second metal fitting 55 is connected to the other pole of the power supply side terminal 32 of the 100 V branch breaker 31, the second terminal connector 7 of the L1 phase conductor bar 3 or the fourth terminal connector 17 of the L2 phase conductor bar 13.
And is made of a conductive material, and has a fitting main body 53 and a clamped portion 54, like the first fitting 52. However, the shape of the metal fitting body 53 is slightly different from the metal fitting body 53 of the first metal fitting 52 as shown in FIG. 5, and the length of the bent portion at the substantially middle position between one end and the other end is reduced.

The first casing 56 includes the first fitting 52 and the second
A case for storing the metal fittings 55.
And a hollow body having a vertical body 58 and a substantially T-shaped cross section. The horizontal main body 57 has a surface plate 57a indicating "100V" and stores the first metal fitting 52 and the second metal fitting 55, and the first metal fitting 52 and the second metal fitting 55 are attached to the second metal fitting 52 in the second manner. Insert the screws 59 into the holes 53c, 53c and fix them so that the horizontal body 57
Attach to A covering member 57b is provided at one end of the horizontal body 57.
And a clamped portion of the first metal fitting 52 and the second metal fitting 55 below the other end.
54, 54 have insertion holes 57c, 57c through which are inserted. The covering member 57b covers the N-phase conductor bar 23 adjacent to the place where the 100V unit 51 is installed, and is formed in a substantially flat plate shape.

The vertical main body 58 accommodates the holding portions 53a, 53a of the first metal fitting 52 and the second metal fitting 55, and the lower surface 58a has
It has three insertion holes 58b, 58c, 58d arranged side by side at predetermined intervals. The insertion holes 58b, 58c, 58d are provided with the second terminal portion 8a, the sixth terminal portion 28, and the fourth terminal portion of the conductor bars 3, 13, 23, respectively.
18a or the intervals between the second terminal portion 8b, the sixth terminal portion 28, and the fourth terminal portion 18b. The insertion hole 58b is
The insertion hole 58c is provided in the holding portion 53a of the second
Is disposed at a position corresponding to the holding portion 53a, and the insertion hole 58d
Inside is a space. In addition, this first casing
56 is formed in black.

The 200V unit 61 is provided with the L1 phase conductor bar 3
And 200 V from the L2 phase conductor bar 13 to the 200 V branch breakers 41, 41,.
And a second casing 66. The third metal fitting 62 is 200
One pole of the power supply side terminal 42 of the V branch breaker 41 and the second terminal connector 7 of the L1 phase conductor bar 3 or the L2 phase conductor bar 13
And is made of a conductive material, and has a fitting body 63 and a clamped portion 64. Bracket body 63
Is formed by bending a metal plate, and has, at one end, a second terminal portion 8a, 8b of the second terminal connector 7 of the L1 phase conductor bar 3 or a fourth terminal 17 of the fourth terminal connector 17 of the L2 phase conductor bar 13. Part 18a,
A receiving blade-like holding portion 63a for holding the holding member 18b, a first mounting hole 63b for mounting the holding portion 64 at the other end, and a second casing at a substantially intermediate position between one end and the other end. Mounting hole 63c for mounting
Having. The clamped portion 64 is inserted into one of the receiving blade-shaped poles of the power supply side terminal 42 of the 200 V branch breaker 41, has a substantially cylindrical plug-blade shape, and is formed so as to be orthogonal to the metal fitting body 63. It is attached to one attachment hole 63b by caulking or welding. The clamped portion 64 has a length that protrudes more than the second casing 66.

The fourth metal fitting 65 is connected to the other pole of the power supply side terminal 32 of the 100 V branch breaker 31 and the second terminal connecting member 7 of the L1 phase conductive bar 3 not connected by the third metal fitting 62 or the L2 phase conductive bar. The thirteenth fourth terminal connection body 17 is connected to the thirteenth terminal, and is made of a conductive material. However, the shape of the metal fitting body 63 is slightly different from that of the metal fitting body 63 of the third metal fitting 62 as shown in FIG. 9, and the length of the bent portion at the substantially middle position between one end and the other end is reduced.

The second casing 66 includes the third fitting 62 and the fourth
A case for storing the metal fittings 65.
And a hollow main body 68 having a substantially T-shaped cross section. The horizontal body 67 has "200 V" displayed on the surface plate 67a and houses the third metal fitting 62 and the fourth metal fitting 65, and the third metal fitting 62 and the fourth metal fitting 65 are attached to the second mounting part. Insert the screws 59 into the holes 63c, 63c and fix them so that the horizontal body 67
Attach to A covering member 67b is provided at one end of the horizontal body 67.
The clamped portion of the third metal fitting 62 and the fourth metal fitting 65 is provided below the other end.
Insert holes 67c, 67c through which the holes 64, 64 are inserted.
It has an insertion portion 67d. The covering member 67b is
N-phase conductor bar adjacent to where V unit 61 is installed
23, and is formed in a substantially flat plate shape. The second insertion portion 67d is of a convex shape to be inserted into the second insertion portion 44 of the 200V branch breaker 41, and is formed in a substantially rectangular parallelepiped shape substantially the same shape as the second insertion portion 44.

The vertical body 68 houses the holding portions 63a, 63a of the third metal fitting 62 and the fourth metal fitting 65, and the lower surface 68a has
It has three insertion holes 68b, 68c, 68d arranged side by side at predetermined intervals. The insertion holes 68b, 68c, 68d are provided in the second terminal portion 8a, the sixth terminal portion 28, and the fourth terminal portion of the conductor bars 3, 13, 23, respectively.
18a or the intervals between the second terminal portion 8b, the sixth terminal portion 28, and the fourth terminal portion 18b. Also, the insertion hole 68b is
The insertion hole 68d is inserted into the holding portion 63a of the third
Is disposed at a position corresponding to the insertion portion 63a.
The space inside c is a space. The first casing 66 is formed in red.

The storage section 71 is for storing when the 100 V and 200 V units 51, 51... 61, 61 are not used, and is provided at the end of the box mounting base 1. The storage unit 71 has a large number of plug-shaped storage bodies (not shown) that are not electrically connected.
V and 200V units 51, 51... 61, 61.
Keep them by pinching 63a.

Next, the procedure for assembling the single-phase three-wire distribution board A will be described below. First, the main breaker 2, the L1 phase conductor bar 3, the L2 phase conductor bar 13, the N phase conductor bar 23, and the storage unit 71 are mounted on the box mounting base 1, and the L1 phase is connected to the terminal 2 a of the main breaker 2. The conductor bar 3, the L2-phase conductor bar 13, and the N-phase conductor bar 23 are connected. And 100
The V and 200 V branch breakers 31, 41,... Are mounted on the box mounting base 1 by the required number and the required voltage. FIG. 3 shows the 100V branch breakers 31, 31,... In the upper row of the box mounting base 1, and the 200V branch breakers 4 in the lower row.
1, 41... Indicate a mounted state.

Next, the 100 V and 200 V units 51, 61 are mounted according to the voltages supplied to the branch breakers 31, 41. Since the upper row of the box mounting base 1 is at 100V, 100V units 51, 51...
Since the voltage is 200 V, 200 V units 61, 61... Are mounted. This mounting is performed by each bracket 52,55,6 of each unit 51,61.
2,65 clamping parts 54,54,64,64 are connected to each branch breaker 31,41
Of the power supply side terminals 32, 42, and each bracket 52, 55,
62, 65 sandwiching parts 53a, 53a, 63a, 63a are connected to each conductor bar 3, 13, 23
Into the respective terminal portions 8a, 8b, 18a, 18b, 28, 28. Unnecessary units 51 and 61 are inserted into the storage unit 71.

The single-phase three-wire switchboard A includes a 100V unit 51 and a 100V branch breaker 31 and conductor bars 3,13,23.
Are connected so that 100 V is supplied to the 100 V branch breaker 31 and the 200 V unit 61 is
The 200V branch breaker 41 is attached to the 200V branch breaker 41 by connecting the 00V branch breaker 41 and the conductor bars 3, 13, and 23.
00V is supplied. Therefore, the connection of the electric circuit is simple, the construction time can be shortened, and the conversion of the voltage supplied to each branch breaker 31, 41 can be easily performed. Further, the covering members 57b, 67
Since the adjacent N-phase conductor bar 23 is covered by b, the electric shock is suppressed and the safety is improved.

FIGS. 11 and 14 show a modification of the 100 V and 200 V units 51 and 61, in which a power supply display member 72 is provided. The energization display member 72 is set to 100 V and 2
This indicates whether electricity is flowing to the 00V units 51 and 61. The current transformer 72a, the current detection circuit 72b, and the display
72c.

The current transformer 72a is connected to the second
It detects whether electricity is flowing to the metal fitting 55 or the third metal fitting 62 of the 200V unit 61, is formed in a coil shape, is extrapolated to the second metal fitting 55 or the third metal fitting 62, and outputs a detection signal to the current detecting circuit 72b. Output to The current detection circuit 72b
This is for determining whether or not the current flowing through the metal fitting 55 or the third metal fitting 62 is at a level at which the indicator 72c is illuminated.
When it is detected that the current has flowed, the display signal is output to the display 72c. The display 72c is formed of, for example, a light emitting diode, is attached to the surface plates 57a, 67a of the horizontal main bodies 57, 67, and lights up based on a display signal.

In this case, since it is possible to confirm whether electricity is flowing to the 100 V and 200 V units 51 and 61 by the power supply indicating member 72, the use status can be understood, and this is convenient. Note that the level at which the indicator 72c of the energization display member 72 is turned on is not limited to the present modification, and can be set as appropriate.

FIGS. 15 to 17 show another modification of the 100 V and 200 V units 51 and 61.
73 is provided. The 200V unit 61 is not shown.

The power supply display member 73 has a voltage of 100 V and 200 V.
It displays the voltage of the current flowing through the units 51 and 61, and includes a voltage detection line 73a, a control circuit 73b, and a display 73c. The voltage detection line 73a is the first metal fitting of the 100V unit 51.
52 and second fitting 55 or third fitting 62 of 200V unit 61
And a wire that draws current from the fourth bracket 65, and the control circuit 73b
Connected to The control circuit 73b displays the voltage of the electric circuit on the display 73.
It is to judge whether or not the level is such that c is turned on. For example, when the voltage becomes 85% or less of the rated voltage, a display signal is outputted to the display 73c. The display 73c is formed of, for example, a light emitting diode, and is a surface plate 57 of the horizontal main bodies 57, 67.
a, 67a, and light up based on the display signal.

The power supply display member 73 has the 100
Since the voltage flowing through the branch breakers 31, 41 to which the V and 200V units 51, 61 are connected can be checked, erroneous connection is suppressed and the connection status can be understood at a glance, which is convenient.
Note that the level at which the indicator 73c of the power supply display member 73 is turned on is not limited to this modification, and may be, for example, higher than the rated voltage and can be set as appropriate.

FIGS. 18 and 19 show still another modification of the 100 V and 200 V units 51 and 61, in which a temperature display member 74 is provided. The temperature display member 74 is 10
It indicates the temperature of the surface of the first and second casings 56 and 66 of the 0 V and 200 V units 51 and 61, and is made of a temperature-sensitive material, and is a surface plate of the first and second casings 56 and 66.
Attached to 57a, 67a. The temperature display member 74 is white at normal temperature, but changes color to black when the temperature reaches 60 ° C., and does not return to white even when the temperature decreases.

In this case, since the temperature of the branch breakers 31 and 41 to which it is mounted can be confirmed by the temperature display member 74, it is easy to detect the occurrence of an abnormality, and the safety is improved. It should be noted that the color of the temperature display member 74 is not limited to this modified example, and a color that can display a temperature rise stepwise may be used.

Next, a second embodiment of the present invention will be described with reference to FIGS.
It will be described based on. In this embodiment, 100 V and 20 V
The structure of the 0 V branch breakers 31, 41 and the 100 V and 200 V units 51, 61 is different from that of the first embodiment.

100V and 200V branch breakers 31,41
The power supply side terminals 32, 42 have terminal portions 32a, 32a,
The terminal portions 32a, 32a, 42a, 42a are formed as rectangular concave power supply insertion portions 35, 45 around the terminal portions 32a, 42a. on the other hand,
The load-side terminals 33 and 43 also have plug-shaped terminal portions 33a, 33a, 43a,
43a, and also around the terminal portions 33a, 33a, 43a, 43a,
The load insertion portions 36 and 46 have a rectangular concave shape. The terminal portions 32a, 32a, 42a, 42a and the terminal portions 33a, 33a, 43a, 43a are connected to a shutoff mechanism (not shown) of each branch breaker 31, 41.

Reference numeral 81 denotes a load-side terminal block, which serves as a connector for connecting a load wire (not shown) to the load-side terminals 33, 43 of the 100 V and 200 V branch breakers 31, 41, and includes terminal fittings 82, 82 and a lock. It has springs 83, 83, release buttons 84, 84, and a casing 85. The terminal fitting 82 has terminal portions 33a, 33a, 43a,
43a and a load wire are connected, and a metal plate made of a conductive material is bent to form a receiving blade-shaped holding portion 82a,
It has a substantially U-shaped connecting portion 82b connected thereto. The terminal portions 33a, 33a, 43a, 43a are inserted into the holding portion 82a. The connecting portion 82b is a portion into which the lock spring 83 is inserted.
Clamps the load wire with the connecting portion 82b by the elastic force. The release button 84 is a columnar member that compresses the lock spring 83. By pressing the release button 84, the space between the lock spring 83 and the connecting portion 82b is expanded, and the load wire can be removed. Therefore, the load-side terminal block 81 forms a quick connection terminal portion to which a load wire can be quickly connected.

The casing 85 comprises terminal fittings 82, 82 and a lock spring.
83,83 and release button 84,84
V and 200V branch breakers 31, 41, load insertion parts 36, 46
And is formed in a substantially box shape with a resin material. Specifically, the release button 8
Pressing holes 85b, 85b for pressing the terminals 84, 84, insertion holes 85d, 85d for inserting the load wires into the connecting portions 82b of the terminal fittings 82 on the side surfaces 85c, and holding portions 82a of the terminal fittings 82 are accommodated. It has a rectangular box-shaped insertion portion 85e inserted into the load insertion portions 36 and 46. The pressing holes 85b serve as a resistance measuring unit for measuring the insulation resistance. That is, the measuring terminals of the tester for measuring the insulation resistance are inserted through the pressing holes 85b, 85b, and the terminal fittings 82 are inserted.
By touching, the insulation resistance can be measured. Further, the inserted portion 85e has an opening 85f below, and
100V and 200V branch breakers 31, 41 of terminal section 33a,
33a, 43a, 43a are inserted.

In the 100 V and 200 V units 51 and 61, the clamped portions 54 and 64 of the first to fourth fittings 52, 55, 62 and 65 are provided.
Has a receiving blade shape as shown in FIG. On the lower surface of the other ends of the horizontal bodies 57, 67 of the first and second casings 56, 66, clamped portions 54, 64 are housed.
Load insertion parts 36,4 of 0V and 200V branch breakers 31,41
6 has insertion parts 57e and 67e in the shape of a rectangular box to be inserted.

In the single-phase three-wire distribution board A, the load-side terminal block 81 can be attached and detached, so that the load wires can be easily connected, so that the construction time can be shortened. Also, 100
V and 200V branch breakers 31, 41, each power supply insertion part 35, 4
5, since the inserted portions 57e and 67e of the units 51 and 61 are inserted, the positions of the units 51 and 61 are stabilized, and the reliability is improved.

FIGS. 31 to 40 show a modification of the second embodiment, in which the structure of each connection portion is changed. These are the terminals 32a and 42a of the power supply terminals 32 and 42 of the 100 V and 200 V branch breakers 31 and 41, and the load terminals 33 and 43.
Terminal portions 33a and 43a are shaped like receiving blades. In addition, the holding portion 82a of the terminal fitting 82 of the load-side terminal block 81, 100
The first to fourth fittings 52,5 of the V and 200V units 51,61
5, 62, 65 to-be-clamped portions 54, 64 are formed in the shape of a blade having a rectangular cross section.

In order to prevent erroneous mounting of the 100 V and 200 V units, a second insertion portion is provided in the 200 V unit.
Although the 200 V branch breaker was provided with the second inserted portion,
The 0V branch breaker is provided with a convex first insertion portion, and the first insertion portion is inserted into the 100V unit, so that the conductor bar and the 100V branch breaker are electrically connected to each other to form a concave first insertion portion. May be provided.

[0066]

According to the first aspect of the present invention, the single-phase three-wire distribution board has the following features.
When supplying 100V to the 00V branch breaker, 10
When 200V is supplied to the 0V unit and the 200V branch breaker, the 200V unit is used.
Since the 0 V branch breaker is easily connected, conversion of the voltage supplied to the branch breaker can be easily performed.

The single-phase three-wire switchboard according to the second aspect has the same effect as the first aspect, and further includes a plug-shaped terminal connecting body at the holding portion of the 100 V and 200 V units. Since the power supply side terminal of each of the receiving blade-shaped branch breakers can be connected by being inserted into the clamped portion of the unit, the connection time is shortened, and the conversion of the voltage supplied to the branch breaker is further reduced. Can be easily done.

According to the third aspect of the present invention, in addition to the effects of the first and second aspects, the single-phase three-wire distribution board further includes a conductor bar and a 100 V power supply unless the first insertion portion is inserted into the first insertion portion. Since the branch breaker is not electrically connected by the 100 V unit, 200 V is not supplied to the 100 V branch breaker, so that the reliability is improved.

Further, the distribution board according to the fourth aspect is the first aspect of the invention.
In addition to the effects of any one of (1) to (3), if the second insertion portion is not inserted into the second inserted portion, the conductor bar and the 200V branch breaker are not electrically connected by the 200V unit, so that 200V is applied to the 100V branch breaker. Since it is not supplied, the reliability is further improved.

In addition, the distribution board according to the fifth aspect is characterized by the first aspect.
100V and 200V
Since it is easy to identify the V unit, erroneous connection is suppressed, and the connection status can be understood at a glance, which is convenient.

Further, the distribution board according to claim 6 is the same as claim 1.
In addition to the effects of any one of
Since it is possible to check whether electricity is flowing to the 0 V and 200 V units, the use situation can be understood, which is more convenient.

Further, the distribution board according to the seventh aspect is characterized by the first aspect.
In addition to the effects of any one of the above, the voltage flowing through the branch breaker can be confirmed on the power supply display member, so that erroneous connection is further suppressed, and the connection status can be understood at a glance, which is more convenient.

Further, the distribution board according to the eighth aspect is the first aspect of the invention.
In addition to the effects of any one of (7) to (7), since the adjacent N-phase conductor bar is covered with the covering member, the electric shock is suppressed, and the safety is further improved.

In addition, the distribution board according to the ninth aspect is the first aspect of the invention.
In addition to the effects of any one of (8) to (8), since the temperature of the branch breaker can be confirmed by the temperature display member, it is easy to detect the occurrence of an abnormality, and the safety is further improved.

The distribution board according to claim 10 is the same as that in claim 1.
In addition to the effects of any one of (1) to (9), the load wire can be quickly connected to the load-side terminal of the branch breaker, so that the construction time can be further reduced.

The switchboard according to the eleventh aspect is the first aspect of the invention.
In addition to the effects of any one of the above, the insulation resistance can be measured by the resistance measuring section of the branch breaker, which is more convenient.

Further, the switchboard according to claim 12 is the same as claim 1.
In addition to the effects of any one of the above, the load-side terminal of the branch breaker can be attached and detached, so that the load-side terminal can be removed and the load electric wire can be connected, so that the construction time can be further reduced.

Further, in addition to the effect of any one of the first to twelfth aspects, the power distribution panel according to the thirteenth aspect has a 100 V
And at least one of the 200 V units can be stored, so that the fear of loss is reduced and the device is easy to use.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a single-phase three-wire distribution board showing a first embodiment of the present invention.

FIG. 2 is an assembled perspective view of the single-phase three-wire distribution board.

FIG. 3 is a plan view of the single-phase three-wire distribution board.

FIG. 4 is a perspective view of a 100 V unit of the single-phase three-wire distribution board.

FIG. 5 is a cross-sectional view of the 100V unit.

FIG. 6 is a vertical sectional view of the 100V unit.

FIG. 7 is a perspective view of a fitting main body of a first fitting of the 100V unit.

FIG. 8 is a perspective view of a 200 V unit of the single-phase three-wire distribution board.

FIG. 9 is a cross-sectional view of the 200V unit.

FIG. 10 is a longitudinal sectional view of the 200V unit.

FIG. 11 is a perspective view of a 100 V unit showing a modification of the first embodiment.

FIG. 12 is a cross-sectional view of the 100V unit.

FIG. 13 is a longitudinal sectional view of the 100V unit.

FIG. 14 is a perspective view of the 200V unit.

FIG. 15 is a perspective view of a 100 V unit showing another modification of the first embodiment.

FIG. 16 is a transverse sectional view of the 100V unit.

FIG. 17 is a longitudinal sectional view of the 100V unit.

FIG. 18 is a diagram showing a further modified example of the first embodiment.
It is a perspective view of a unit.

FIG. 19 is a perspective view of the 200V unit.

FIG. 20 is an exploded perspective view of a single-phase three-wire distribution board showing a second embodiment of the present invention.

FIG. 21 is a plan view of the single-phase three-wire distribution board.

FIG. 22 is a perspective view of a 100 V unit of the single-phase three-wire distribution board.

FIG. 23 is a cross-sectional view of the 100V unit.

FIG. 24 is a longitudinal sectional view of the 100V unit.

FIG. 25 is a perspective view of a fitting main body of a first fitting of the 100V unit.

FIG. 26 is a cross-sectional view of the 200V unit.

FIG. 27 is a longitudinal sectional view of the 200V unit.

FIG. 28 is a perspective view of a load-side terminal block of the single-phase three-wire distribution board.

FIG. 29 is a longitudinal sectional view of the load-side terminal block.

FIG. 30 is a perspective view of a terminal fitting of the load-side terminal block.

FIG. 31 is an exploded perspective view of a single-phase three-wire distribution board showing a modification of the second embodiment.

FIG. 32 is a perspective view of a 100 V unit of the single-phase three-wire distribution board.

FIG. 33 is a cross-sectional view of the 100V unit.

FIG. 34 is a longitudinal sectional view of the 100V unit.

FIG. 35 is a perspective view of a second fitting of the 100V unit.

FIG. 36 is a cross-sectional view of the 200V unit.

FIG. 37 is a longitudinal sectional view of the 200 V unit.

FIG. 38 is a perspective view of a load-side terminal block of the single-phase three-wire distribution board.

FIG. 39 is a longitudinal sectional view of the load-side terminal block.

FIG. 40 is a perspective view of a terminal fitting of the load-side terminal block.

FIG. 41 is a partially exploded perspective view of a single-phase three-wire distribution board showing a conventional example of the present invention.

[Explanation of symbols]

 A Single-phase three-wire distribution board 1 Box mounting base 2 Main breaker 3 L1 phase conductor bar 4 First body 5 Second body 6 Second body plate 7 Second terminal connector 13 L2 phase conductor bar 14 Third body 15 Fourth body 23 N-phase conductor bar 24 Fifth body 25 Sixth body 31 100V branch breaker 32 Power supply terminal 33 Load side terminal 41 200V branch breaker 42 Power supply terminal 43 Load side terminal 51 100V unit 52 First fitting 55 No. 2 metal fittings 56 1st casing 61 200V unit 62 3rd metal fittings 65 4th metal fittings 66 2nd casing 71 Storage section 72 Power supply display member 73 Power supply display member 74 Temperature display member 81 Load side terminal block 82 Terminal fittings 83 Lock spring 84 Release button 85 Casing

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-180324 (JP, A) JP-A-5-304712 (JP, A) JP-A-6-141420 (JP, A) JP-A-6-141420 153338 (JP, A) Fully open 1981-136406 (JP, U) Fully open 1984-135010 (JP, U) Fully open 1987-178713 (JP, U) Fully open, 3-124704 (JP, U) 56-164609 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) H02B 1/40-1/42

Claims (13)

(57) [Claims] 1. A box mounting base, and a substantially long plate-like member which is arranged in parallel with the box base with a predetermined interval,
L formed by connecting a large number of terminal connectors in the longitudinal direction.
A one-phase conductor bar, an L2-phase conductor bar, and an N-phase conductor bar;
A two-pole 100 V or two terminal having a power supply side terminal and a load side terminal and attached to a box base so as to be orthogonal to each conductor bar.
A 00V branch breaker, a first metal fitting for connecting one pole of a power supply side terminal of the branch breaker and a terminal connection body of an N-phase conductor bar, and a terminal connection body of the other pole and an L1-phase conductor bar or an L2-phase conductor bar. A substantially rectangular parallelepiped 100V unit having a second metal fitting to be connected, a third metal fitting for connecting one pole of the power supply side terminal of the branch breaker and the terminal connecting body of the L1 phase conductive bar, and the other metal and the L2 phase conductive bar. A substantially rectangular parallelepiped 200V unit having a fourth metal fitting for connecting a terminal connector, and a single-phase three-wire distribution board. 2. The terminal connecting body of each conductor bar is formed in a plug blade shape, each pole of a power supply side terminal of each branch breaker is formed in a blade shape, and each of first to fourth metal fittings of 100V and 200V units. And a receiving blade-shaped holding portion for holding the terminal connecting body and a plug-shaped holding portion inserted into each pole of the power supply side terminal of the branch breaker. The described single-phase three-wire distribution board. 3. A 100V branch breaker is provided with a convex first insertion portion, and a 100V unit is provided with a first insertion portion.
The single-phase three-wire power distribution device according to claim 1 or 2, further comprising a concave first inserted portion to which the conductor bar and the 100V branch breaker are electrically connected by inserting the insertion portion. Board. 4. The 200V unit is provided with a convex second insertion portion, and the 200V branch breaker is provided with a second insertion portion.
4. The single-phase three-wire power distribution device according to claim 1, further comprising: a concave second insertion portion to which the conductor bar and the 200V branch breaker are electrically connected by inserting the insertion portion. Board. 5. The 100V and 200V units are:
5. The single-phase three-wire switchboard according to claim 1, wherein the switchboard is formed in different colors. 6. A power supply display member for displaying whether or not electricity is flowing is provided in at least one of the 100V and 200V units.
The described single-phase three-wire distribution board. 7. The single-phase three-wire switchboard according to claim 1, wherein a power supply display member for displaying a voltage is provided on at least one of the 100V and 200V units. 8. The single-phase three-wire distribution board according to claim 1, wherein at least one of the 100V and 200V units is provided with a covering member for covering an adjacent N-phase conductor bar. 9. The single-phase three-wire switchboard according to claim 1, wherein at least one of the 100V and 200V units is provided with a temperature display member for displaying the temperature of the unit. 10. A quick-connecting terminal portion capable of quickly connecting a load wire to at least one load-side terminal of the 100V and 200V branch breakers.
The described single-phase three-wire distribution board. 11. The single-phase three-wire power distribution device according to claim 1, wherein a resistance measuring unit for measuring an insulation resistance is provided on at least one load side terminal of the 100 V and 200 V branch breakers. Board. 12. The single-phase three-phase power supply according to claim 1, wherein at least one of the load-side terminals of the 100 V and 200 V branch breakers is detachably formed by fitting with a main body of the branch breaker. Wire distribution board. 13. The single-phase three-wire distribution board according to claim 1, wherein a storage unit that stores at least one of a 100 V unit and a 200 V unit is provided on the box mounting base.