JP2001069620A - Single-phase three-wire type distribution board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the load balance of a single-phase three-wire type line. SOLUTION: Circuit breakers 2 have two-pole switching mechanism units in the inside. Conductive bar sockets 41, 42 and 43 into which circuit breaker connection units, consisting of conductive bars 31, 32 and 33 are inserted, are formed in the one side ends of apparatus at the upper, middle and lower levels. The heights of the upper conductive bar sockets 41 correspond to the height of the uppermost level conductive bar 31 of a neutral pole N, when it is attached to a fixing base. The heights of the middle conductive bar sockets 42 correspond to the heights of the leg tabs 21 of the conductive bar 32 or 33. Furthermore, the heights of the lower level conductive bar sockets 43 corresponds to the heights of the leg tabs 20 of the conductive bar 32 or 33.

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 for connecting circuit breakers from both sides of a conductive bar.

2. Description of the Related Art Japanese Patent Laid-Open Publication No.
No. 415140. In this conventional example, two types of circuit breakers corresponding to the voltage poles of L1 and L2 are manufactured, or the position of the receiving blade is moved,
The load balance of the voltage poles of the single-phase three-wire system L1 and L2 can be adjusted.

[0002]

In the above-described conventional example, although the load balance can be adjusted, two types of circuit breakers are manufactured, so the manufacturing cost is high, and when the position of the receiving blade is moved, There was trouble to move.

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 adjust the load balance of a single-phase three-wire wiring path. To provide.

[0004]

According to the first aspect of the present invention, L
At least three conductive bars consisting of two voltage poles of L1, L2 and one neutral pole extend in the direction of juxtaposition of the circuit breaker, and are connected to at least the circuit breaker of the three conductive bars. Circuit breaker connection portions are arranged in three stages in the vertical direction, and the terminal for the neutral pole inserted and connected to the neutral pole among the three stages of circuit breaker connection portions in the vertical direction is the first terminal. A plurality of circuit breakers having a voltage pole terminal portion provided at a second height position and having a voltage pole terminal portion inserted and connected to one of the two voltage pole circuit breaker connection portions are connected to a conductive bar. In the single-phase three-wire distribution board disposed on both sides of the arrangement position, L1 is located on one side of the conductive bar on both sides.
And the circuit breaker connection of the voltage pole of L2 is disposed at the third height position, and the L2 voltage pole is disposed on the other side. And the circuit breaker connection portion of the voltage electrode of L1 is disposed at the second height position.

According to a second aspect of the present invention, in the first aspect of the present invention, the circuit breaker connecting portions of the voltage electrodes L1 and L2 are
It is characterized in that it is formed integrally with the conductive bar of each voltage pole, and is constituted by a plurality of leg pieces bent on one side or the other side.

According to a third aspect of the present invention, in the second aspect of the present invention, two adjacent leg pieces are bent to opposite sides.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the circuit breaker connecting portions of the voltage poles of L1 and L2 are connected to one of the circuit breakers arranged with the conductive bar disposed therebetween. A first extension piece extending in the direction in which the circuit breakers are arranged;
A second extension piece extending in the direction in which the circuit breakers are arranged on the other circuit breaker side disposed with the conductive bar interposed therebetween, and a first extension piece extending between the first and second extension pieces. The first and second extending pieces of one conductive bar each integrally formed with a connecting piece to be connected are constituted by the first and second extending pieces, and the circuit breaker connection portion of the neutral pole is arranged in the direction in which the circuit breakers are juxtaposed. And two conductive bars disposed in parallel with the first and second extension pieces.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the circuit breaker connecting portions of the voltage poles of L1 and L2 are:
A first extension piece extending in the direction in which the circuit breakers are arranged on one circuit breaker side disposed with the conductive bar disposed therebetween, and a first extension piece disposed with the conductive bar disposed therebetween. On the other circuit breaker side, a second extension piece extending in the direction in which the circuit breakers are juxtaposed and a connecting piece connecting the first and second extension pieces are integrally formed with each other. The first of the conductive bars of the book
And the second extension piece, and the circuit breaker connecting portion of the neutral electrode extends in the direction in which the circuit breakers are juxtaposed, and is arranged in parallel with the first and second extension pieces. It is characterized by comprising one conductive bar.

According to a sixth aspect of the present invention, in the first aspect of the present invention, the circuit breaker connecting portions of the voltage poles of L1 and L2 are:
A first conductive bar extending in the direction in which the circuit breakers are arranged on one circuit breaker side disposed with the conductive bar disposed therebetween, and the other conductive bar disposed with the conductive bar disposed therebetween. And a second conductive bar extending in the direction in which the circuit breakers are arranged on the side of the circuit breaker. It is characterized in that it extends and is formed separately on two conductive bars arranged in parallel with the first and second conductive bars.

According to a seventh aspect of the present invention, in any one of the first to sixth aspects of the present invention, the circuit breaker connection of a plurality of conductive bars comprising the two voltage poles L1 and L2 and one neutral pole. The circuit breaker connection part of the conductive bar of the neutral pole among the parts is disposed as the uppermost stage.

According to an eighth aspect of the present invention, in any one of the first to seventh aspects of the present invention, the circuit breaker further includes a storage portion for storing a circuit breaker connection portion of a voltage electrode that is not connected to the voltage electrode terminal portion. It is characterized by having been provided.

According to the ninth aspect of the present invention, three conductive bars consisting of two voltage poles L1 and L2 and one neutral pole are extended in the direction in which the circuit breakers are arranged, and these three conductive bars are provided. A terminal for a neutral electrode, which is inserted and connected to the conductive bar of the neutral electrode, is provided at the first height position, and a voltage which is inserted and connected to one of the conductive bars of the two voltage electrodes. In a single-phase three-wire distribution board in which a plurality of circuit breakers having pole terminals at a second height are disposed on both sides of a conductive bar, two conductive bars of the L1 and L2 voltage poles are provided. Are arranged side by side at the second height position in the width direction, and the conductive bar of the neutral electrode is arranged at the first height position as a width corresponding to substantially the outermost ends of the conductive bars of the two voltage electrodes. It is characterized by having been established.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments. (Embodiment 1) FIGS. 2 and 3 show an example of a distribution board 1 according to an embodiment of the present invention. FIG. 1 shows a circuit breaker 2 attached to the distribution board 1 and a neutral connected to these circuit breakers 2. Poles N and L1,
The relationship between the two voltage poles of L2 and at least three conductive bars 31 and 32, 33 is shown.

The distribution board 1 of this embodiment comprises a box-shaped body 10 and a cover 11 which is attached to the opening of the body 10 so as to be openable and closable. As shown in FIG. A circuit breaker 3 and a plurality of branch circuit breakers 2 are provided. The operation handles H of the circuit breakers 3 and 2 are exposed to the outside through a window of the cover 11.

The circuit breaker 2 is shown in FIG.
On one side of the inside, two units are arranged in upper and lower rows, and six units are arranged in each row. The three conductive bars 31 to 33 are arranged between the upper and lower two rows so as to extend in the direction in which the circuit breakers 2 are arranged.

FIG. 4 shows a mounting portion for mounting the circuit breakers 2 and 3 to the bottom of the body 10, and this mounting portion has both side edges bent upward in FIG. 4 (and FIG. 5). It consists of two iron plates and is located on the bottom of the body 10 as shown in FIG.
, Bases 4, 4 arranged in parallel in the horizontal direction at an interval up and down, a mounting base 5 made of an iron plate arranged so as to bridge between these bases 4, 4, , 4, a resin-made conductive bar mounting base 6 disposed in a central recess 5 </ b> B of a mounting base 5 recessed to correspond to the gap between the mounting base 5 and the mounting base 6 and the base 4. And a base 4,4 for fixing a circuit breaker, which is disposed so as to extend over the side piece 5A of the mounting base 5, which is disposed as described above.
And a fixed base 8 for a main circuit breaker made of an iron plate, the side end of which is fixed to one end of the main circuit breaker.

More specifically, as shown in FIG. 3, the base 4 is fixed to the bottom of the body 10 by a fixing screw 12 inserted through a long hole 9 provided at one end.

As shown in FIG. 5, the center of the mounting base 5 is recessed in the direction of the body 10, and each side piece 5A extending laterally from both sides of the center recess 5B is formed by bending the side pieces 5A on both sides of the base 4. It is mounted on the end face, and fixed so that the fixing screw 15 is fastened to the screw hole 16 on the side of the base 4 through the insertion hole 14 provided in each side piece 5A so as to bridge between the bases 4 and 4 on both sides. And
The central concave portion 5B fits between the bases 4 and 4.

The mounting base 6 is arranged in the central recess 5B, and has a round hole 1 formed in the central recess 5B at the bottom.
The group of cylindrical portions 18 that fit into the group 7 is projected, and the cylindrical portion 1818 is positioned by fitting into the round hole 17. Support posts 13 for supporting the conductive bars 31 of the neutral pole N are integrally provided at the upper center of the portions protruding from both ends of the central recess 5B.

The conductive bar 31 is provided with mounting pieces 3 formed at both ends.
By fastening a fixing screw 37 to a nut 38 housed and fixed in the concave portion 34 at the upper end of the support post 13 through an insertion hole 31b formed in 1a, a bridge is arranged between the support posts 13 at both ends. .

The flat portions on both sides of the central portion connecting between the support posts 13 at both ends are arrangement portions for disposing the conductive bars 32.33 of the voltage poles of L1 and L2, and the upper surface on the side of these arrangement portions. , Pins 19 for supporting the fixed base 7 are integrally provided upright at predetermined intervals in both end directions.

Between the support posts 13 at both ends, leg pieces 20 integrally formed from the conductive bars 32, 33 are formed.
A support rib 22 for the leg 21 at a higher position inside a circuit breaker connecting portion, which will be described later, and a rib 23 along the base 28 of the leg 20, 21 protrude.

The conductive bars 32, 33 are arranged and fixed at respective positions on the mounting base 6 before the fixing bases 7, 7 are arranged.

The conductive bars 32 and 33 are formed in the same shape and are arranged symmetrically. At both ends, there are provided insertion holes 25 through which fixing screws 24 are inserted. It is configured to be fixed by being fastened to a nut 27 arranged in a concave portion 26 of the mounting base 6 through the hole 25.

When the conductive bars 32 and 33 are arranged, the base 28 is bent up from the side edge which is on the inside at regular intervals so as to correspond to the number of circuit breakers 2 arranged, and one side of the upper end of the base 28 is provided. Then, the leg piece 20 is further horizontally extended toward the outside direction, and an extension piece bent in an inverted L shape so that the horizontal piece faces inward is provided at the upper end of the base 28 adjacent to the leg piece 20. It is formed. The leg piece 20 and the leg piece 21, which is a horizontal piece of the extension piece, constitute a circuit breaker connection portion which is inserted and connected to a voltage electrode terminal connection portion described later provided on one end side of the circuit breaker 2. Here, the interval between adjacent ones of the leg pieces 20 and 21 bent in the same direction is substantially the same as that of the circuit breaker 2.

The fixed base 7 is disposed so as to extend over the mounting base 6 and the side pieces 5A of the mounting base 5 after the conductive bars 32, 33 are disposed on the mounting base 6. At this time, the fixed base 7
The locking claws 29 projecting and locking at four places from the back surface of the side piece 5
The fixed base 7 is fixed by being inserted and locked in the locking hole 30 formed in A.

As shown in FIG. 11, on the upper surface of the fixed base 7, a positioning protrusion 35 for positioning the both sides of the body of the circuit breaker 2 is sandwiched, and one end provided with the terminal connection portion. Is inserted into an inverted L-shaped recess 36 having a side and a lower end opened at the lower part of both side surfaces of the other end of the opposite body from the lower surface opening of the recess 36, and the circuit breaker 2 is moved by The hook 39 formed by the horizontal piece is inserted into the hooked portion 53 formed by the lateral concave portion of the recess 36 so that the hook portion 39 is formed.
The number of the circuit breakers 2 is arranged such that the convex fitting portion 53a formed on the bottom of the hooked portion 53 is fitted into the concave fitting portion 39a formed on the lower surface of the hooked portion 53 and the inverted L-shaped projection 54 is hooked and locked. Correspondingly, they protrude integrally.

The fixing base 8 is formed by fixing a fixing piece 40 protruding from one end to one end of the bases 4, 4 with fixing screws 61.
4 and a fixing piece 40 'protruding from the other side.
Is fixed to the bottom of the body 10 with a fixing screw 61 ′, and is disposed in the body 10.
Is fixed with a screw.

The load side terminals of the main circuit breaker 3 are L1, L
2 and the conductive bars 44, 45 and 46 of the neutral pole N
Are connected to the respective conductive bars 32, 33 and 31.
This connection is made by the conductive bars 32, 3 on the main circuit breaker 3 side.
This is performed by overlapping the ends of the conductive bars 44, 45, 46 on the ends of the base plates 3, 31 and fixing them with fixing screws 24, 24, 37.

On the upper surface of the conductive bar 31 bridged between the support posts 13, 13, a locking member 4 having an elastic projecting piece 47 facing the upper surface of the circuit breaker 2 disposed on both sides.
8 (see FIGS. 6 and 7).

The locking member 48 is made of a synthetic resin molded product, and corresponds to each of the three circuit breakers 2 on both sides.
Two sets are provided on the upper surface side of the conductive bar 31, and each locking member 48 integrally locks a support 49 mounted on the upper surface of the conductive bar 31 on both lower surfaces as shown in FIG. 6. At the same time, two columnar projections 50 which are press-fitted into the round holes 56 formed in the conductive bar 31 are integrally protruded on the lower surface between the support tables 49 at a predetermined interval, and the projections adjacent to each support table 49 are provided. 50
Between the projections 50, 50, three elastic protruding pieces 47, each of which is pivotally supported at one end by a connecting piece, are integrally formed on both sides. Then, when attached to the conductive bar 33, the distal end of each elastic projection piece 47 projects so as to face the upper surface at the inside position of the circuit breaker 2 arranged at the regular position. On both sides of the distal end of the elastic protruding piece 47, locking portions 58 for locking with two protruding locked portions 57 arranged in parallel on the upper surface at the inner position of the circuit breaker 2 are formed so as to protrude.

The circuit breaker 2 is fixedly arranged on the fixed base 7 in a state where the mounting portion constructed as described above is arranged on the bottom of the body 10.

Here, the circuit breaker 2 used in this embodiment has a built-in two-pole switching mechanism inside, and as shown in FIG. The conductive bar insertion ports 41, 42, 43 into which the circuit breaker connection portions of the conductive bars are inserted are opened in the steps, and the height position of the conductive bar insertion ports 41 in the upper stage is set when the fixed base 7 is disposed. It corresponds to the height position of the uppermost conductive bar 31, and the middle conductive bar insertion port 42 is the conductive bar 32 or 33.
Of the conductive bar 32 or 33 corresponds to the height position of the leg 20 of the conductive bar 32 or 33.

In this embodiment, as shown in FIG. 8, a receiving blade which is a terminal connecting portion for inserting and connecting a circuit breaker connecting portion composed of a side edge of the conductive bar 33 of the neutral pole N in the upper conductive bar insertion port 41 as shown in FIG. 51, and a receiving blade 52 for inserting the circuit breaker connection portion 21 or 20 of the conductive bar 32 or 33 of the voltage electrode of L1 or L2 into one of the conductive bar insertion openings 42 and 43 in either the middle or the lower stage. And the other is not provided with a receiving blade, and is used as a storage portion for the circuit breaker connection portion.

The receiving blade 52 corresponding to the voltage pole is moved to the position of the conductive bar insertion port 42 or 43 by moving the slide lever 60 exposed on the side of the body upward or downward as shown in FIG. In two groups of circuit breakers arranged in upper and lower rows,
The voltage poles of L1 and L2 to be connected so as to balance the load can be easily selected.

In arranging and fixing the circuit breaker 2 to the fixed base 7, the conductive bar insertion port side is located between the pair of protrusions 35 on the fixed base 7 at the position where the circuit breaker 2 is to be arranged. The lower part of the body at one end is fitted, and the projection 5 is formed from the lower opening of the recess 36 on both sides of the body at the other end.
4 is fitted in the recess 36 and placed on the fixed base 7 as shown in FIG. At this time, the tip of the corresponding elastic projecting piece 47 of the locking member 48 faces the upper surface of the circuit breaker 2.

In this state, when the circuit breaker 2 is linearly moved as shown in FIG. 9 in the direction of the conductive bar arrangement position, the circuit breaker connection which is the side edge of the conductive bar 31 of the neutral pole N is connected to the conductive bar insertion port 41. Part is inserted and faces the opening of the receiving blade 51,
L1 or L2 is inserted into the conductive bar insertion port 42 in the middle stage.
The leg 21 of the conductive bar 31 or 32 of the voltage pole is inserted, and the leg 20 of the conductive bar 32 or 31 of the L2 or L1 voltage electrode is inserted into the lower conductive bar insertion port 43. In the drawing, the leg piece 20 faces the receiving blade 52 disposed in the conductive bar insertion port 43.

On the other hand, as the circuit breaker 2 moves linearly, the inclined surface 58a of the lower surface of the locking portion 58 of the corresponding elastic protruding piece 47 of the locking member 48 becomes a locked portion 57 formed on the upper surface of the circuit breaker 2. As shown in the figure.

When the circuit breaker 2 is further moved from this state, the locking portion 5
8, the inclined surface 58a slides on the inclined surface 57a of the locked portion 57 and climbs up, eventually gets over the locked portion 57, and the elastic protruding piece 47 returns to its original position due to elasticity. Therefore, the locked portion 57 of the circuit breaker 2 is locked by the locking portion 58. This restricts the movement of the circuit breaker 2 in the outward direction (the direction in which the conductive bar is pulled out from the receiving blade). On the other hand, the hooking portion 39 provided on the projection 54 fitted into the recess 36 from below is inserted into the hooked portion 53 along with the movement of the circuit breaker 2, and eventually the fitting recess provided on the lower surface of the hooking portion 39. 39a is a fitting convex portion 5 provided on the lower surface of the hooked portion 53.
As shown in FIG.

At the time of the fitting of the concave and convex portions, a so-called click feeling is given to the operator, and the circuit breaker 2 is fixed to the fixed position, that is,
The operator is informed that the circuit breaker connection portion of the conductive bar 31, 32 or 33 has been completely inserted into the first and the second 52, and the insertion amount of the circuit breaker connection portion with respect to the result receiving blades 51 and 52. Can be suppressed.

The movement of the circuit breaker 2 in the upward direction, that is, in the direction perpendicular to the surface of the fixed base 7, is restricted by the concave-convex fitting of the hooked portion 53 and the hooking portion 39. Further, since the hook portion 39 and the projection 54 are accommodated in the recess 36 and the hooked portion 53, the gap between the adjacent circuit breaker 2 can be reduced.

As described above, the circuit breaker 2 can be easily mounted on the fixed base in the distribution board and electrically connected.

When the circuit breaker 2 disposed on the fixed base 7 is to be removed as shown in FIG. 10 or 11, the operation provided on the rear end of the elastic projecting piece 47 of the locking member 48 is performed. As shown in FIG. 12, the piece 62 is pushed downward by the driver 63, the elastic projecting piece 47 is rotated about the connecting piece to move the tip thereof upward, and the locking portion 58 at the tip is moved to the circuit breaker. The second locked portion 57 is detached. As a result, the circuit breaker 2 can be moved in the tripping direction. If the circuit breaker 2 is linearly moved in the tripping direction in this state, the fitting of the hooked portion 53 and the hooking portion 39 becomes disengaged. ,
The circuit breaker 2 is moved until the locking portion 39 moves above the lower surface opening position of the recess 36, and then the circuit breaker 2 can be removed if it is lifted upward.

(Embodiment 2) In the first embodiment, the leg pieces 20 and 21 of the conductive bars 32 and 33 are connected to the narrower leg pieces 20 and 21 corresponding to the positions of the circuit breakers 2.
Each of the legs 20 and 21 is integrally extended from the side edges of the legs 2 and 33, but in the present embodiment, the L1 and L2
The conductive bars 32 and 33 corresponding to the voltage poles of FIG.
As shown in FIG. 4, a first extension piece 32 </ b> A extending in the direction in which the circuit breakers 2 are arranged on one circuit breaker 2 side (for example, the left side in the figure) disposed with the conductive bar disposed therebetween. , 33A
And second extension pieces 32B, 33B extending in the direction in which the circuit breakers 2 are arranged on the other circuit breaker 2 side (for example, the right side in the figure) disposed with the conductive bar disposed therebetween. , These first and second extension pieces 32A, 33A, 32B, 33B
For example, the extension piece 32A of the conductive bar 32 on the left side in the figure is positioned at the height of the conductive bar insertion port 42 in the middle stage of the circuit breaker 2, and the conductive bar on the right side. The height of the extension 32B of the circuit breaker 2 is set to the height of the lower conductive bar insertion port 43, and the extension 33A of the left conductive bar 33 is set to the lower conductive bar of the circuit breaker 2. The height position of the extension piece 33B of the right conductive bar 33 is the height position of the middle conductive bar insertion port 42 of the circuit breaker 2, and the height of the conductive bar 32, 33 Outward side edges of the first and second extension pieces 32A, 33A and 32B, 33B are used as circuit breaker connection portions.

In the case of the first embodiment, the conductive bar 31 of the neutral pole N has the width dimension of the receiving bar in the upper conductive bar insertion port 31, 31 of the circuit breaker 2, 2 arranged on both sides. In the present embodiment, the first and second conductive bars 32 and 33 extend in the direction in which the circuit breakers 2 are arranged side by side. The respective side edges of the two conductive bars 31A, 31B arranged in parallel with the extension pieces 32A, 33A, 32B, 33B of the above-mentioned form a circuit breaker connection portion of the neutral pole N.

According to the present embodiment, the first and second extending pieces 32A, 33A in which the circuit breaker connecting portions of the voltage poles L1, L2 constitute one conductive bar 32, 33 respectively.
And 32B and 33B, L1,
L. The polarity of the second voltage pole can be easily determined, and it is easy to prevent wrong polarity.

(Embodiment 3) In Embodiment 2 described above, the conductive bar of the neutral pole N is constituted by two conductive bars 31A and 31B. In this embodiment, as shown in FIGS. As in the first embodiment, a single wide conductive bar 31 is used.

Thus, in this embodiment, in addition to the features of the second embodiment, the number of conductive bars can be reduced, and the work of arranging the conductive bars becomes easy.

(Embodiment 4) In Embodiments 1 to 3, L
Although each of the conductive bars has a circuit breaker connection portion of the voltage electrode of L1 and L2, each of the bars has been described.
7. As shown in FIG. 18, the conductive bar insertion holes 42 at the middle and lower stages of the circuit breaker 2 on the side of the circuit breaker 2 (for example, on the left side in FIG. 18) disposed with the conductive bar disposed therebetween. , 43, the first conductive bars 32A of the voltage electrode of L1 and the first conductive bars 33A of the voltage electrode of L2 are vertically arranged in parallel, and are disposed with the conductive bar group interposed therebetween. On the other side (for example, the right side in the figure) of the circuit breaker 2, the second of the voltage poles of L2 is set to correspond to the height positions of the conductive bar insertion ports 42 and 43 in the middle and lower stages of the circuit breaker 2. The second conductive bars 32B of the voltage poles of the conductive bars 33B and L2 are vertically arranged in parallel, and their side edges are used as circuit breaker connection portions.

The circuit breaker connection of the neutral pole N is extended in the direction in which the circuit breakers are juxtaposed and arranged in parallel above the first and second conductive bars 32A and 33B at the middle level. The two conductive bars 31A and 31B are provided with side edges, respectively.

In the present embodiment, the arrangement of the conductive bars 32A, 32B, 33A, 33B of the voltage electrodes L1 and L2 may be simply reversed on both sides. Yes, the work of manufacturing the conductive bar becomes easy.

(Embodiment 5) In this embodiment, FIG.
As shown in FIG. 20, in the circuit breakers 2 which are arranged on the left and right sides of the arrangement position of the conductive bars, the receiving blades 52 are respectively arranged in the lower conductive bar insertion holes 43 and correspond to this height position. The two conductive bars 32, 33 of the voltage electrodes L1, L2 are arranged side by side in the width direction.
9, in the circuit breaker 2 on the left side in FIG. 20, the L1 conductive bar 32 is inserted and connected to the receiving blade 52, and the other (FIG. 19, FIG.
In the circuit breaker 2 on the right side in FIG.
3 is inserted and connected to the receiving blade 52. The width of the conductive bar 31 of the neutral pole N is made wide so that the side edges on both sides can be inserted and connected to the upper conductive bar insertion ports 41 of the circuit breakers 2 on both sides.
1 are arranged so as to correspond to the height position.

In this embodiment, when the circuit breakers 2 are inserted from both sides of the conductive bars 32 and 33, respectively, L1 and L2
Can be connected in a well-balanced manner. Also, L1, L2
Since the two conductive bars 32.33 of the voltage pole are located at the same height, the height direction of the distribution board itself can be made compact.

[0054]

According to the first aspect of the present invention, at least three conductive bars consisting of two voltage poles L1 and L2 and one neutral pole extend in the direction in which the circuit breakers are juxtaposed. A circuit breaker connection portion connected to at least the circuit breaker of the conductive bar is disposed as a three-tiered vertical direction,
Among these three vertical circuit breaker connection parts, a terminal part for a neutral pole inserted and connected to a neutral pole is provided at a first height position, and a circuit breaker connection part of two voltage poles is provided. Single-phase three-wire distribution board in which a plurality of circuit breakers having voltage terminal terminals connected to one of them at the second height are disposed on both sides of the conductive bar. In one of the two sides of the conductive bar, the circuit breaker connection portion of the voltage electrode of L1 is disposed at the second height position on one side, and the circuit breaker connection portion of the voltage electrode of L2 is formed on the second side. Arranged at the height of 3,
On the other side, the circuit breaker connection of the voltage electrode of L2 is disposed at the second height position and the circuit breaker connection of the voltage electrode of L1 is disposed at the second height position. When the circuit breaker connection part is inserted and connected to the terminal part of the circuit breaker from both sides of the arrangement position, the voltage poles of L1 and L2 can be connected in a well-balanced manner. By changing the height position of the breaker connection,
There is no need to make circuit breakers for L1 and L2,
In addition, there is no need to move the voltage pole terminal section inserted and connected to the circuit breaker connection section of the voltage pole to select L1 and L2, and there is an effect that the work of adjusting the load balance can be easily performed. .

According to a second aspect of the present invention, in the first aspect of the present invention, the circuit breaker connecting portions of the L1 and L2 voltage poles are integrally formed on conductive bars of the respective voltage poles, and are connected to one side or the other side. Since a plurality of bent leg pieces are provided, the material of the conductive bar can be easily removed.

According to a third aspect of the present invention, in the second aspect of the present invention, two adjacent leg pieces are bent to opposite sides, so that the length of the conductive bar of the voltage pole is provided. It can be easily changed according to the number of vessels.

According to a fourth aspect of the present invention, in the first aspect,
A first extension in which the circuit breaker connection portions of the voltage poles of L1 and L2 extend in the direction in which the circuit breakers are arranged on one of the circuit breakers arranged with the conductive bar interposed therebetween. Piece, a second extension piece extending in the direction in which the circuit breakers are arranged on the other circuit breaker side disposed with the conductive bar interposed therebetween, and the first and second extensions A first conductive bar and a second conductive bar, each of which is integrally formed by a connecting piece for connecting the two pieces;
And two of the neutral pole circuit breaker connecting portions extending in the direction in which the circuit breakers are arranged and disposed in parallel with the first and second extension pieces. As a conductive bar, L
The polarities of the voltage poles 1 and L2 can be easily determined, and incorrect polarity can be easily prevented.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the circuit breaker connecting portions of the voltage poles of L1 and L2 are connected to one of the circuit breakers arranged with the conductive bar disposed therebetween. A first extension piece extending in the direction in which the circuit breakers are arranged;
A second extension piece extending in the direction in which the circuit breakers are arranged on the other circuit breaker side disposed with the conductive bar interposed therebetween, and a first extension piece extending between the first and second extension pieces. The first and second extending pieces of one conductive bar each integrally formed with a connecting piece to be connected are constituted by the first and second extending pieces, and the circuit breaker connection portion of the neutral pole is arranged in the direction in which the circuit breakers are juxtaposed. And the number of conductive bars can be reduced in addition to the effect of claim 4, since one conductive bar is provided parallel to the first and second extension pieces. Arrangement work becomes easy.

According to a sixth aspect of the present invention, in the first aspect of the present invention, the circuit breaker connecting portions of the voltage poles L1 and L2 are connected to one of the circuit breakers disposed with the conductive bar disposed therebetween. A first conductive bar extending in the direction in which the circuit breakers are arranged, and a second conductive bar extending in the direction in which the circuit breakers are arranged on the other circuit breaker side disposed with the conductive bar disposed therebetween. And the two conductive bars are individually formed, and the neutral pole circuit breaker connection portion extends in the juxtaposition direction of the circuit breakers and is disposed in parallel with the first and second conductive bars. Since the two conductive bars are individually formed, the arrangement of the conductive bars of the voltage electrodes L1 and L2 may be simply reversed, and the shape of the conductive bar is the same as that of the conventional one, so that the operation of manufacturing the conductive bar becomes easy. .

The invention of claim 7 is the first to sixth aspects of the present invention.
In any one of the inventions described above, the circuit breaker connection portion of the conductive bar of the neutral pole among the circuit breaker connection portions of the plurality of conductive bars including the two voltage poles L1 and L2 and one neutral pole. Since it is arranged as the uppermost stage, the uppermost circuit breaker connection portion which may be touched the most is a neutral electrode, which makes it easier to prevent electric shock.

According to an eighth aspect of the present invention, in any one of the first to seventh aspects of the present invention, the circuit breaker further includes a storage portion for storing a circuit breaker connection portion of a voltage electrode that is not connected to the voltage electrode terminal portion. With the provision, the circuit breaker connection portions of these voltage electrodes can be stored in the storage portion of the circuit breaker, and the appearance is improved.

According to a ninth aspect of the present invention, the three conductive bars consisting of two voltage poles L1 and L2 and one neutral pole extend in the direction in which the circuit breakers are arranged, and these three conductive bars are provided. A terminal for a neutral electrode, which is inserted and connected to the conductive bar of the neutral electrode, is provided at the first height position, and a voltage which is inserted and connected to one of the conductive bars of the two voltage electrodes. In a single-phase three-wire distribution board in which a plurality of circuit breakers having pole terminals at a second height are arranged on both sides of a conductive bar,
The two conductive bars of the voltage electrodes L1 and L2 are juxtaposed in the width direction at a second height position, and the conductive bar of the neutral electrode is substantially the outermost end of the conductive bars of the two voltage electrodes. Since the circuit breaker is inserted from both sides of the conductive bar and connected to the voltage poles of L1 and L2 in good balance, the voltage of L1 and L2 can be connected. Pole 2
Since the conductive bars are located at the same height, the height direction of the distribution board itself can be made compact.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a main part according to a first embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a front view showing a state in which the cover is removed.

FIG. 4 is an exploded perspective view of the mounting portion according to the first embodiment.

FIG. 5 is an exploded perspective view of a main part of the mounting unit according to the first embodiment.

FIG. 6 is an exploded perspective view illustrating a relationship between the elastic locking portion and the conductive bar according to the first embodiment.

FIG. 7 is an exploded perspective view illustrating a relationship between the elastic locking portion and the circuit breaker according to the embodiment.

FIG. 8 is a partially omitted and broken side view for explaining the arrangement of the circuit breaker according to the embodiment.

FIG. 9 is a partially omitted and broken side view for explaining the arrangement of the circuit breaker according to the embodiment.

FIG. 10 is a partially omitted and cutaway side view for explaining the arrangement of the circuit breaker of the above.

FIG. 11 is a perspective view showing an arrangement relationship between the fixed base and the circuit breaker according to the third embodiment.

FIG. 12 is a partially omitted and cutaway side view for explaining the removal of the circuit breaker of the above.

FIG. 13 is an exploded perspective view showing a main part of a second embodiment of the present invention.

FIG. 14 is a diagram illustrating the relationship between the circuit breaker and the conductive bar according to the third embodiment.

FIG. 15 is an exploded perspective view showing a main part of a third embodiment of the present invention.

FIG. 16 is a diagram illustrating the relationship between the circuit breaker and the conductive bar according to the third embodiment.

FIG. 17 is an exploded perspective view showing a main part of a fourth embodiment of the present invention.

FIG. 18 is a diagram illustrating the relationship between the circuit breaker and the conductive bar according to the third embodiment.

FIG. 19 is an exploded perspective view showing a main part of a second embodiment of the present invention.

FIG. 20 is a diagram illustrating the relationship between the circuit breaker and the conductive bar according to the third embodiment.

[Explanation of symbols]

 2 Circuit breaker 20, 21 Circuit break connection part 31-33 Conductive bar 41-43 Conductive bar insertion port 51, 52 Receiving blade

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tomoyuki Sawada 1048 Kazumasa Kadoma, Osaka Prefecture Matsushita Electric Works, Ltd. (72) Inventor Hatsuo Mizuno 1048 Kadoma Kadoma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Works Co., Ltd. 1048 Okadoma Kadoma, Kadoma City, Osaka Prefecture (72) Tetsuyasu Kawamoto, Inventor Tetsuyasu Kawamoto Okadoma Kadoma, Kadoma City, Osaka Prefecture 1048 Okadomo Kadoma, Kazuma Kadoma, Osaka Inventor Akihiko Hirao (72) Matsushita Electric Works, Ltd. (72) Inventor Takanobu Tanaka 1048, Kazuma, Kadoma, Osaka Pref. Matsushita Electric Works, Ltd. F-term (reference) 5G030 BA02 BA06 EA 00 FA01 XX20

Claims (9)

[Claims] At least three conductive bars comprising two voltage poles L1 and L2 and one neutral pole extend in the direction in which the circuit breakers are arranged, and at least one of the three conductive bars has a circuit. The circuit breaker connection part connected to the circuit breaker is arranged as three stages in the vertical direction, and the terminal for the neutral pole which is inserted and connected to the neutral pole of the circuit breaker connection parts in the three stages in the vertical direction A plurality of circuits having a voltage pole terminal portion at a second height position, wherein the voltage pole terminal portion is provided at a first height position and a voltage pole terminal portion which is inserted and connected to one of the two voltage pole circuit breaker connection portions is provided. In a single-phase three-wire distribution board in which circuit breakers are arranged on both sides of the conductive bar, a circuit breaker connection part of a voltage electrode of L1 is formed on one side in both sides of the conductive bar. And the circuit breaker connection of the voltage pole of L2 at the third height position. On the other side, the circuit breaker connection of the voltage electrode of L2 is disposed at the second height position, and the circuit breaker connection of the voltage electrode of L1 is disposed at the second height position. A single-phase three-wire distribution board characterized by being installed. 2. The circuit breaker connecting portions of the voltage poles L1 and L2 are formed integrally with conductive bars of the respective voltage poles, and are constituted by a plurality of leg pieces bent on one side or the other side. The single-phase three-wire distribution board according to claim 1, wherein: 3. The single-phase three-wire distribution board according to claim 2, wherein two adjacent leg pieces are bent to opposite sides. 4. The circuit breaker connection of the voltage poles of L1 and L2 extending in the direction in which the circuit breakers are arranged on the side of one of the circuit breakers disposed with the conductive bar disposed therebetween. A first extension piece, a second extension piece extending in the direction in which the circuit breakers are arranged on the other circuit breaker side disposed with the conductive bar interposed therebetween, and the first and the second extension pieces. The first and second extension pieces of one conductive bar each integrally formed with a connection piece that connects between the two extension pieces, and the circuit breaker connection of the neutral electrode is formed by a circuit. 2. The single-phase three-wire power distribution unit according to claim 1, wherein the power supply unit comprises two conductive bars extending in the direction in which the circuit breakers are juxtaposed and arranged in parallel with the first and second extension pieces. Board. 5. The circuit breaker connection of the voltage poles of L1 and L2 extending in the direction of juxtaposition of the circuit breakers on one of the circuit breakers arranged with the conductive bar interposed therebetween. A first extension piece, a second extension piece extending in the direction in which the circuit breakers are arranged on the other circuit breaker side disposed with the conductive bar interposed therebetween, and the first and the second extension pieces. The first and second extension pieces of one conductive bar each integrally formed with a connection piece that connects between the two extension pieces, and the circuit breaker connection of the neutral electrode is formed by a circuit. 2. The single-phase three-wire power distribution device according to claim 1, wherein the single-phase three-wire power distribution device comprises a single conductive bar extending in a direction in which the circuit breakers are arranged and arranged in parallel with the first and second extension pieces. Board. 6. The circuit breaker connection of the voltage poles of L1 and L2 extending in the direction in which the circuit breakers are arranged on one of the circuit breakers disposed with the conductive bar disposed therebetween. A first conductive bar and a second conductive bar extending in the direction in which the circuit breakers are arranged on the other circuit breaker side disposed with the conductive bar interposed therebetween; The neutral pole circuit breaker connection is extended in the direction
The single-phase three-wire distribution board according to claim 1, wherein the single-phase three-wire distribution board is separately formed on two conductive bars disposed in parallel with the second conductive bar. 7. The circuit breaker connection of the conductive bar of the neutral pole of the plurality of conductive bars comprising the two voltage poles L1 and L2 and one neutral pole is connected to the uppermost stage. The single-phase three-wire distribution board according to any one of claims 1 to 6, wherein the single-phase three-wire distribution board is provided. 8. The circuit breaker according to claim 1, further comprising a storage portion for storing a circuit breaker connection portion of a voltage electrode that is not connected to the voltage pole terminal portion. The described single-phase three-wire distribution board. 9. Three conductive bars consisting of two voltage poles L1 and L2 and one neutral pole extend in the direction in which the circuit breakers are juxtaposed, and neutral among the three conductive bars. The terminal for the neutral pole plugged into the conductive bar of the pole
A plurality of circuit breakers provided at the second height position and having voltage terminal terminals inserted at one of the two conductive bars of the two voltage electrodes provided at the second height position. In the single-phase three-wire distribution board provided in the above, the two conductive bars of the voltage poles L1 and L2 are arranged side by side at the second height position in the width direction, and the conductive bar of the neutral pole is A single-phase three-wire distribution board, which is disposed at a first height position with a width corresponding to a substantially outermost end of a conductive bar of two voltage electrodes.