JP4366773B2 - Single-phase three-wire distribution board - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a single-phase three-wire distribution board that connects circuit breakers from both sides of a conductive bar.
[Prior art]
As this type of distribution board, there is one having a configuration as shown in Japanese Patent Laid-Open No. 10-2415140. In this conventional example, two types of circuit breakers are manufactured according to the voltage poles of L1 and L2, and the position of the receiving blade is moved to balance the load balance of the voltage poles of the single-phase three-wire L1 and L2. Can be matched.
[0002]
[Problems to be solved by the invention]
Although the load balance can be adjusted in the conventional example as described above, since two types of circuit breakers are manufactured, the manufacturing cost is high, and there is a trouble of moving the position of the receiving blade.
[0003]
The present invention has been made in view of such a reason, and an object thereof is to provide a single-phase three-wire distribution board capable of easily adjusting the load balance of a single-phase three-wire wiring path. It is in.
[0004]
[Means for Solving the Problems]
  In the invention of claim 1, at least three conductive bars comprising two voltage electrodes L1 and L2 and one neutral electrode are provided.pluralThe circuit breaker is extended in the juxtaposed direction, and at least one of the three conductive bars is connected to at least the circuit breaker as a three-stage vertical circuit breaker,AboveIn a single-phase three-wire distribution board in which a plurality of circuit breakers are arranged on both sides of the conductive bar arrangement position,All the circuit breakers are provided with a neutral electrode terminal portion that is plugged into the neutral electrode of the three circuit breaker connection portions in the vertical direction at the first height position and two voltages. A voltage electrode terminal portion that is plugged into one of the circuit breaker connection portions of the electrode is provided at one of the second height position and the third height position, and the voltage electrode A storage portion for storing the circuit breaker connection portion of the voltage electrode not connected to the terminal portion for use is provided at the second height position or the other height position of the third height position;Of the conductive barIn the longitudinal directionIn both directions,On one side, the circuit breaker connection for the L1 voltage pole is located at the second height position and the circuit breaker connection for the L2 voltage pole is located at the third height position, The circuit breaker connection for the L2 voltage pole is disposed at the second height position, and the circuit breaker connection for the L1 voltage pole is provided.ThirdIt is arrange | positioned in the height position of.
[0005]
According to a second aspect of the present invention, in the first aspect of the invention, the circuit breaker connecting portions of the voltage electrodes of L1 and L2 are integrally formed on the conductive bars of the respective voltage electrodes, and bent to one side or the other side. It is characterized by comprising a plurality of leg pieces.
[0006]
According to a third aspect of the present invention, in the second aspect of the present invention, two adjacent leg pieces are bent opposite to each other.
[0007]
  In the invention of claim 4,At least three conductive bars composed of two voltage electrodes L1 and L2 and one neutral electrode are extended in the parallel arrangement direction of the circuit breaker, and are connected to at least the circuit breaker of the three conductive bars. The circuit breaker connection portion is arranged in three stages in the vertical direction, and the terminal portion for the neutral pole that is plugged into the neutral pole among the three circuit breaker connection portions in the vertical direction is connected to the first stage. A plurality of circuit breakers provided at a second height position and provided with a voltage pole terminal portion at a second height position and plugged into one of the two voltage pole circuit breaker connection portions. In the single-phase three-wire distribution board arranged on both sides of the arrangement position, the circuit breaker connection portion of the voltage electrode of L1 on the one side in the longitudinal direction of the conductive bar is at the second height. The circuit breaker connection of the voltage pole of L2 and the third high The circuit breaker connection for the L2 voltage pole is located at the second height position and the circuit breaker connection for the L1 voltage pole is located at the third height position on the other side. Set upA first extension that extends the circuit breaker connection portion of the voltage poles of L1 and L2 in the direction in which the circuit breakers are arranged on the side of one of the circuit breakers arranged across the arrangement position of the conductive bar A piece, a second extension piece extending in the direction in which the circuit breakers are arranged on the other circuit breaker side arranged across the position where the conductive bar is disposed, and the first and second extensions. The first and second extending pieces of one conductive bar each integrally formed by a connecting piece for connecting the pieces together, and the circuit breaker connecting portion of the neutral pole is connected to the circuit breaker It is characterized by comprising two conductive bars extending in the juxtaposed direction and arranged in parallel to the first and second extending pieces.
[0008]
  In the invention of claim 5,At least three conductive bars composed of two voltage electrodes L1 and L2 and one neutral electrode are extended in the parallel arrangement direction of the circuit breaker, and are connected to at least the circuit breaker of the three conductive bars. The circuit breaker connection portion is arranged in three stages in the vertical direction, and the terminal portion for the neutral pole that is plugged into the neutral pole among the three circuit breaker connection portions in the vertical direction is connected to the first stage. A plurality of circuit breakers provided at a second height position and provided with a voltage pole terminal portion at a second height position and plugged into one of the two voltage pole circuit breaker connection portions. In the single-phase three-wire distribution board arranged on both sides of the arrangement position, the circuit breaker connection portion of the voltage electrode of L1 on the one side in the longitudinal direction of the conductive bar is at the second height. The circuit breaker connection of the voltage pole of L2 and the third high The circuit breaker connection for the L2 voltage pole is located at the second height position and the circuit breaker connection for the L1 voltage pole is located at the third height position on the other side. Set upA first extension that extends the circuit breaker connection portion of the voltage poles of L1 and L2 in the direction in which the circuit breakers are arranged on the side of one of the circuit breakers arranged across the arrangement position of the conductive bar A piece, a second extension piece extending in the direction in which the circuit breakers are arranged on the other circuit breaker side arranged across the position where the conductive bar is disposed, and the first and second extensions. The first and second extending pieces of one conductive bar each integrally formed by a connecting piece for connecting the pieces together, and the circuit breaker connecting portion of the neutral pole is connected to the circuit breaker It is characterized by comprising one conductive bar that extends in the juxtaposed direction and is disposed in parallel to the first and second extending pieces.
[0009]
  In the invention of claim 6,At least three conductive bars composed of two voltage electrodes L1 and L2 and one neutral electrode are extended in the parallel arrangement direction of the circuit breaker, and are connected to at least the circuit breaker of the three conductive bars. The circuit breaker connection portion is arranged in three stages in the vertical direction, and the terminal portion for the neutral pole that is plugged into the neutral pole among the three circuit breaker connection portions in the vertical direction is connected to the first stage. A plurality of circuit breakers provided at a second height position and provided with a voltage pole terminal portion at a second height position and plugged into one of the two voltage pole circuit breaker connection portions. In the single-phase three-wire distribution board arranged on both sides of the arrangement position, the circuit breaker connection portion of the voltage electrode of L1 on the one side in the longitudinal direction of the conductive bar is at the second height. The circuit breaker connection of the voltage pole of L2 and the third high The circuit breaker connection for the L2 voltage pole is located at the second height position and the circuit breaker connection for the L1 voltage pole is located at the third height position on the other side. Set upThe first conductive bar that extends in the direction in which the circuit breakers are arranged on one circuit breaker side of the circuit breaker connection portion of the voltage poles of L1 and L2 across the conductive bar arrangement position And the second conductive bar extending in the direction in which the circuit breakers are juxtaposed on the other circuit breaker side disposed across the arrangement position of the conductive bar, The circuit breaker connection portion is formed individually on two conductive bars extending in the parallel arrangement direction of the circuit breakers and arranged in parallel with the first and second conductive bars.
[0010]
According to a seventh aspect of the present invention, in any one of the first to sixth aspects, the circuit breaker connection portion of the plurality of conductive bars including the two voltage electrodes L1 and L2 and one neutral electrode. The circuit breaker connection part of the conductive bar of the neutral electrode is arranged as the uppermost stage.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
(Embodiment 1)
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 neutral poles N and L1, connected to these circuit breakers 2. The relationship between the two voltage electrodes of L2 and at least three conductive bars 31, 32, and 33 is shown.
[0014]
The distribution board 1 of this example is composed of a box-shaped body 10 and a cover 11 that is attached to the opening of the body 10 so as to be freely opened and closed. As shown in FIG. 3 and a plurality of branch circuit breakers 2 are arranged, and the operation handles H of these circuit breakers 3 and 2 are exposed to the outside through the window holes of the cover 11.
[0015]
In FIG. 3, the circuit breakers 2 are arranged in two upper and lower rows on one side in the body 10, and six units are arranged in parallel in each row. Between these two upper and lower rows, the three conductive bars 31 to 33 are arranged so as to extend in the direction in which the circuit breakers 2 are arranged in parallel.
[0016]
FIG. 4 shows an attachment portion for attaching the circuit breakers 2 and 3 to the bottom portion of the body 10, and this attachment portion is composed of two sheets whose side edges are bent upward in FIG. 4 (and FIG. 5). The bases 4 and 4 are made of an iron plate and are arranged at the bottom of the body 10 in parallel in the lateral direction with a vertical interval in FIG. 3, and are arranged so as to bridge between the bases 4 and 4. The mounting base 5 made of iron plate, the mounting base 6 for resin conductive bar disposed in the central recess 5B of the mounting base 5 recessed so as to correspond to the gap between the bases 4 and 4, and this mounting A fixed base 7 made of resin for fixing a circuit breaker, which is arranged so as to extend over the base 6 and the side piece 5A of the mounting base 5 which is arranged so as to cover the base 4, and the base 4 , 4 Fixed base for main circuit breaker made of iron plate with side end fixed to one side and arranged laterally Consisting of.
[0017]
More specifically, 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.
[0018]
As shown in FIG. 5, the mounting base 5 has a central portion that is recessed in the direction of the body 10, and each side piece 5 </ b> A extending laterally from both sides of the central recess 5 </ b> B is placed on the end face of the bent pieces 4 </ b> A on both sides of the base 4. The fixing screws 15 are fastened to the screw holes 16 on the side of the base 4 through the insertion holes 14 provided in the side pieces 5A, and are fixed so as to bridge between the bases 4 and 4 on both sides. The recess 5B fits between the bases 4 and 4.
[0019]
The mounting base 6 is disposed in the central recess 5B, and a cylindrical portion 18 fitted into a group of round holes 17 formed in the central recess 5B is protruded at the bottom, and the cylindrical portion 1818 is rounded. It is positioned by fitting in 17. A support post 13 for supporting the conductive bar 31 of the neutral electrode N is integrally provided at the center of the upper side of the portion protruding from the opening at both ends of the central recess 5B.
[0020]
The conductive bar 31 is supported at both ends by fastening a fixing screw 37 to a nut 38 that is housed and fixed in the recess 34 at the upper end of the support post 13 through insertion holes 31b formed in attachment pieces 31a formed at both ends. A bridge is disposed between the posts 13 and 13.
[0021]
Further, the flat portions on both sides of the central portion connecting the support posts 13 on both ends serve as arrangement portions for arranging the conductive bars 32.33 of the voltage electrodes of L1 and L2, and are fixed to the upper surfaces on the sides of these arrangement portions. Pins 19 that support the base 7 are integrally provided upright in both end directions at a predetermined interval.
[0022]
Further, between the support posts 13 and 13 at both ends, ribs for supporting the leg piece 21 at a higher position in a circuit breaker connecting portion to be described later composed of leg pieces 20 and 21 integrally extended from the conductive bars 32 and 33. 22 and a rib 23 projecting along the base portion 28 of the leg pieces 20 and 21 are projected.
[0023]
The conductive bars 32 and 33 are arranged and fixed at the respective arrangement portions on the mounting base 6 before the fixing bases 7 and 7 are arranged.
[0024]
The conductive bars 32 and 33 are formed in the same shape and are arranged symmetrically. Insertion holes 25 through which the fixing screws 24 are inserted are provided at both ends, and the fixing screws 24 are inserted into the insertion holes 25. Accordingly, the nut 27 is fixed to the nut 27 disposed in the recess 26 of the mounting base 6.
[0025]
When the conductive bars 32 and 33 are arranged, the base portion 28 is bent up at regular intervals so as to correspond to the number of the circuit breakers 2 arranged from the inner side edge, and further from one side of the upper end of the base portion 28. The leg piece 20 is horizontally extended toward the outer side, and an extension piece bent in an inverted L shape is formed at the upper end of the base portion 28 adjacent to the leg piece 20 so that the horizontal piece faces inward. is there. 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 which will be described later provided on one end side of the circuit breaker 2. Here, an interval between adjacent ones of the leg pieces 20 and 21 bent in the same direction is made substantially the same as that of the circuit breaker 2.
[0026]
The fixed base 7 is disposed so as to cross over the mounting base 6 and the side piece 5A of the mounting base 5 after the conductive bars 32 and 33 are disposed on the mounting base 6. At this time, the fixing base 7 is fixed by inserting and locking the locking claws 29 protruding and locked at four positions from the back surface of the fixing base 7 into the locking holes 30 formed in the side piece 5A.
[0027]
On the upper surface of the fixed base 7, as shown in FIG. 11, a positioning projection 35 for positioning so as to sandwich both side surfaces of the body of the circuit breaker 2, and a side opposite to the one end provided with the terminal connecting portion Is inserted into an inverted L-shaped recess 36 whose side and lower end are opened at the bottom of both side surfaces of the other end of the container body from the lower surface opening of the recess 36, and is moved by the horizontal piece by the movement of the circuit breaker 2. A convex fitting formed on the bottom of the hooked portion 53 is inserted into a hooked fitting portion 39a formed on the lower surface of the hooking portion 39 by inserting the constructed hooking portion 39 into the hooked portion 53 formed by the lateral recess of the recess 36. The inverted L-shaped protrusions 54 that are engaged and locked by engaging the mating portion 53a are integrally provided so as to correspond to the number of circuit breakers 2 arranged.
[0028]
The fixed base 8 is formed by fixing a fixed piece 40 protruded from one side of the bases 4 and 4 from one side to the end of the bases 4 and 4 by a fixing screw 61 and protrudes from the other side. By fixing 'to the bottom of the body 10 with a fixing screw 61', the main circuit breaker 3 is screwed to the upper surface thereof.
[0029]
The load side terminals of the main circuit breaker 3 are connected to the respective conductive bars 32, 33 and 31 via the conductive bars 44, 45 and 46 of the voltage poles L1 and L2 and the neutral pole N. This connection is made by overlapping the ends of the conductive bars 44, 45, 46 on the ends of the conductive bars 32, 33, 31 on the main circuit breaker 3 side and fixing them with the fixing screws 24, 24, 37. Is called.
[0030]
Further, on the upper surface of the conductive bar 31 arranged in a bridge between the support posts 13, 13, a locking member 48 (FIG. 6) having elastic protruding pieces 47 facing the upper surface of the circuit breaker 2 arranged on both sides. (See FIG. 7).
[0031]
The locking member 48 is made of a synthetic resin molded product and corresponds to the three circuit breakers 2 on both sides, and two sets are arranged on the upper surface side of the conductive bar 31. As shown in FIG. 6, the member 48 integrally locks support bases 49 placed on the upper surface of the conductive bar 31 on both sides of the lower surface, and round holes 56 formed in the conductive bar 31 between the support bases 49. Two cylindrical protrusions 50 that are press-fitted into the lower surface are integrally protruded on the lower surface at a predetermined interval, and one end is connected to each support base 49 between adjacent protrusions 50 and between both protrusions 50 and 50 so as to be swingable. Are formed integrally on both sides. When attached to the conductive bar 33, the tip of each elastic protruding piece 47 protrudes so as to face the upper surface of the inner position of the circuit breaker 2 arranged at the normal position. Further, on both sides of the distal end portion of the elastic protruding piece 47, locking portions 58 are formed so as to be locked to two protruding-shaped locked portions 57 arranged in parallel on the upper surface of the inner position of the circuit breaker 2.
[0032]
The circuit breaker 2 is fixedly disposed on the fixed base 7 in a state where the mounting portion configured as described above is disposed on the bottom portion of the body 10.
[0033]
Here, the circuit breaker 2 used in the present embodiment incorporates a two-pole switching mechanism inside, and as shown in FIG. Conductive bar insertion holes 41, 42, 43 into which the circuit breaker connection part of the bar is inserted are opened, and the height position of the upper conductive bar insertion hole 41 is exactly the uppermost level when arranged on the fixed base 7. Corresponds to the height position of the conductive bar 31, the middle conductive bar insertion opening 42 corresponds to the height position of the leg piece 21 of the conductive bar 32 or 33, and the lower conductive bar insertion opening 43 corresponds to the conductive bar. It corresponds to the height position of 32 or 33 leg pieces 20.
[0034]
In this example, a receiving blade 51 serving as 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 is arranged in the upper conductive bar insertion port 41 as shown in FIG. A receiving blade 52 for inserting the circuit breaker connection portion 21 or 20 of the conductive bar 32 or 33 having the voltage electrode of L1 or L2 is disposed in one of the conductive bar insertion ports 42 and 43 of the middle stage or the lower stage, The other receiving blade is not provided and is used as a storage part for the circuit breaker connection part.
[0035]
The receiving blade 52 corresponding to the voltage electrode can be moved to the position of the conductive bar insertion opening 42 or 43 by moving the exposed slide lever 60 up or down on the side of the body as shown in FIG. Thus, in the circuit breaker 2 group arranged in two upper and lower rows, the voltage electrodes of L1 and L2 connected so as to balance the load can be easily selected.
[0036]
Thus, when the circuit breaker 2 is disposed and fixed to the fixed base 7, one end of the conductive bar insertion port side between the pair of protrusions 35 and 35 on the fixed base 7 at the position where the circuit breaker 2 is to be disposed. 8 is fitted into the recess 36 from the lower opening of the recess 36 on both side surfaces of the body on the other end side and placed on the fixed base 7 as shown in FIG. At this time, the tip of the corresponding elastic protruding piece 47 of the locking member 48 faces the upper surface of the circuit breaker 2.
[0037]
In this state, when the circuit breaker 2 is linearly moved in the direction of the conductive bar arrangement position as shown in FIG. 9, the circuit breaker connection portion that is the side edge of the conductive bar 31 of the neutral pole N is inserted into the conductive bar insertion port 41. Then, facing the opening of the receiving blade 51, the conductive bar 31 or the leg piece 21 of the voltage electrode of L1 or L2 is inserted into the middle conductive bar insertion opening 42, and the lower conductive bar insertion opening 43 is further inserted. The leg piece 20 of the conductive bar 32 or 31 having the voltage electrode of L2 or L1 is inserted, and the leg piece 20 faces the receiving blade 52 arranged in the conductive bar insertion opening 43 in the drawing.
[0038]
On the other hand, with the linear movement of the circuit breaker 2, the inclined surface 58 a of the lower surface of the locking portion 58 of the corresponding elastic protruding piece 47 of the locking member 48 is the inclined surface of the locked portion 57 formed on the upper surface of the circuit breaker 2. It contacts as shown in 57a.
[0039]
If the circuit breaker 2 is further moved from this state, the inclined surface 58a of the locking portion 58 rides on the inclined surface 57a of the locked portion 57 while sliding with the elastic deformation of the elastic protruding piece 47, and eventually the covered portion is covered. The elastic projecting piece 47 returns to its original state by elasticity over the locking portion 57. Therefore, the locked portion 57 of the circuit breaker 2 is locked to the locking portion 58. This restricts the circuit breaker 2 from moving in the outer direction (direction in which the conductive bar is pulled out from the receiving blade). On the other hand, the hook portion 39 provided on the protrusion 54 fitted from below into the recess 36 is inserted into the hooked portion 53 as the circuit breaker 2 moves, and eventually the fitting concave portion provided on the lower surface of the hook portion 39. As shown in FIG. 10, the concave and convex portions 39a are fitted into the fitting convex portions 53a provided on the lower surface of the hooked portion 53.
[0040]
A so-called click feeling is given to the operator when the unevenness is fitted, and the circuit breaker 2 is in a fixed position, that is, the position where the circuit breaker connection portion of the conductive bar 31, 32 or 33 is completely inserted into the receiving blades 51 and 52. Thus, the operator knows that the circuit breaker has moved to the end, and as a result, variation in the amount of insertion of the circuit breaker connection portion with respect to the receiving blades 51 and 52 can be suppressed.
[0041]
And by the uneven | corrugated fitting of the to-be-hooked part 53 and the hooking part 39, the movement to the orthogonal | vertical direction with respect to the upper direction of the circuit breaker 2, ie, the surface of the fixed base 7, is controlled. Moreover, since the hook part 39 and the protrusion 54 are stored in the recess 36 and the hooked part 53, a gap between the adjacent circuit breaker 2 can be reduced.
[0042]
As described above, the circuit breaker 2 can be easily attached and electrically connected to the fixed base in the distribution board.
[0043]
When removing the circuit breaker 2 disposed on the fixed base 7 as shown in FIG. 10 or FIG. 11, the operation piece 62 connected to the rear end of the elastic protruding piece 47 of the locking member 48 is provided. As shown in FIG. 12, it is pushed downward by a driver 63, and the elastic protruding piece 47 is rotated around the connecting piece to move its tip end upward. It is made to detach | leave from the latching | locking part 57. FIG. 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 concave and convex fitting between the hooked portion 53 and the hooking portion 39 is released. The circuit breaker 2 can be removed by moving the circuit breaker 2 until the locking portion 39 moves upward at the lower surface opening position of the recess 36 and then lifting it upward.
[0044]
(Embodiment 2)
In the first embodiment, the leg pieces 20, 21 of the conductive bars 32, 33 are integrally extended from the side edges of the respective conductive bars 32, 33 corresponding to the arrangement positions of the circuit breakers 2. In the present embodiment, the conductive bars 32 and 33 corresponding to the voltage electrodes of L1 and L2 are arranged as shown in FIGS. 13 and 14, respectively. The first extending pieces 32A, 33A 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 across the position, and the arrangement positions of the conductive bars The second extension pieces 32B and 33B extending in the direction in which the circuit breakers 2 are arranged side by side on the other side (for example, the right side in the figure) of the circuit breaker 2, and the first and second The connecting pieces 32C, 33C for connecting the extending pieces 32A, 33A, 32B, 33B For example, in the figure, the extension piece 32A of the left conductive bar 32 is set to the height position of the middle conductive bar insertion opening 42 of the circuit breaker 2, and the height position of the extension piece 32B of the right conductive bar 32 is circuit interrupted. The height of the conductive bar insertion port 43 on the lower side of the circuit breaker 2 is set to be the height position of the conductive bar insertion port 43 on the lower side of the circuit breaker 2. 33, the height position of the extending piece 33B of the circuit 33 is the height position of the conductive bar insertion opening 42 in the middle stage of the circuit breaker 2, and the first and second extending pieces 32A, 33A of the conductive bars 32, 33 and The outward side edges of 32B and 33B are used as circuit breaker connection portions.
[0045]
In the case of the first embodiment, the conductive bar 31 of the neutral pole N is inserted into the receiving blade 51 in the upper conductive bar insertion ports 31 and 31 of the circuit breakers 2 and 2 arranged on both sides. In the present embodiment, the first and second extensions of the conductive bars 32 and 33 extend in the parallel arrangement direction of the circuit breakers 2 on both sides. The circuit breaker connection portion of the neutral pole N is constituted by the individual side edges of the two conductive bars 31A, 31B arranged in parallel to the pieces 32A, 33A, 32B, 33B.
[0046]
According to the present embodiment, the circuit breaker connection portions of the voltage electrodes of L1 and L2 are formed by the integrally formed first and second extending pieces 32A, 33A and 32B, 33B, which constitute one conductive bar 32, 33, respectively. Since it is configured, L1, L. The polarity of the two voltage electrodes can be easily discriminated, and it is easy to prevent a polarity error.
[0047]
(Embodiment 3)
In the second embodiment, the conductive bar of the neutral electrode N is composed of the two conductive bars 31A and 31B. However, in this embodiment, as shown in FIG. 15 and FIG. One conductive bar 31 is used.
[0048]
Thus, in the present embodiment, in addition to the features of the second embodiment, the number of conductive bars can be reduced, and the grain distribution work of the conductive bars is facilitated.
[0049]
  (Embodiment 4)
  In the first to third embodiments, each of the conductive bars having the circuit breaker connection portion of the voltage electrode of L1 and L2 is one.,In this embodiment, for example, as shown in FIGS. 17 and 18, the middle and lower stages of the circuit breaker 2 are arranged on one side (for example, the left side in the figure) of the circuit breaker 2 with the conductive bar disposed therebetween. The first conductive bar 32A of the voltage electrode of L1 and the first conductive bar 33A of the voltage electrode of L2 are arranged in parallel in the vertical direction so as to correspond to the height positions of the respective conductive bar insertion openings 42 and 43. The other side (for example, the right side in the figure) of the circuit breaker 2 disposed on the other side of the bar group corresponds to the height positions of the conductive bar insertion holes 42 and 43 in the middle and lower stages of the circuit breaker 2, respectively. The second conductive bar 33B of the voltage electrode of L2 and the second conductive bar 32B of the voltage electrode of L2 are arranged in parallel vertically, and the respective side edges serve as circuit breaker connection portions.
[0050]
The circuit breaker connection of the neutral pole N is disposed in parallel above the first and second conductive bars 32A and 33B extending in the direction in which the circuit breakers are juxtaposed and located at the middle level. The two conductive bars 31A and 31B are respectively constituted by side edges.
[0051]
In the present embodiment, the arrangement of the conductive bars 32A, 32B, 33A, 33B of the voltage electrodes L1 and L2 is simply reversed on both sides, and the shape of the conductive bar is a flat conductive bar similar to the conventional one. The bar manufacturing operation becomes easy.
[0052]
  (Reference example)
  BookReference exampleThen, in the circuit breaker 2 arranged on the left and right sides of the conductive bar arrangement position as shown in FIGS. 19 and 20, the receiving blades 52 are arranged in the lower conductive bar insertion openings 43, respectively. The two conductive bars 32 and 33 of the voltage poles L1 and L2 are arranged in parallel in the width direction so as to correspond to the position, and in one of the circuit breakers 2 (left side in FIGS. 19 and 20), the conductivity of L1 The bar 32 is inserted and connected to the receiving blade 52, and the other circuit breaker 2 (right side in FIGS. 19 and 20) is configured to insert and connect the L 2 conductive bar 33 to the receiving blade 52. The conductive bar 31 of the neutral pole N is wide so that the side edges of both sides can be inserted and connected to the upper conductive bar insertion port 41 of the circuit breaker 2 on both sides, and the height position of the conductive bar insertion port 41 It is arranged to correspond to.
[0053]
  BookReference exampleThen, if the circuit breaker 2 is inserted and connected from both sides of the conductive bars 32 and 33, respectively, it can be connected to the voltage electrodes of L1 and L2 with good balance. Further, since the two conductive bars 32.33 of the voltage electrodes L1 and L2 are at the same height position, the height direction of the distribution board itself can be made compact.
[0054]
【The invention's effect】
  The invention of claim 1 includes at least three conductive bars comprising two voltage electrodes L1 and L2 and one neutral electrode.pluralThe circuit breaker is extended in the juxtaposed direction, and at least one of the three conductive bars is connected to at least the circuit breaker as a three-stage vertical circuit breaker,AboveIn a single-phase three-wire distribution board in which a plurality of circuit breakers are arranged on both sides of the conductive bar arrangement position,All the circuit breakers are provided with a neutral electrode terminal portion that is plugged into the neutral electrode of the three circuit breaker connection portions in the vertical direction at the first height position and two voltages. A voltage electrode terminal portion that is plugged into one of the circuit breaker connection portions of the electrode is provided at one of the second height position and the third height position, and the voltage electrode A storage portion for storing the circuit breaker connection portion of the voltage electrode not connected to the terminal portion for use is provided at the second height position or the other height position of the third height position;Of the conductive barIn the longitudinal directionIn both directions,On one side, the circuit breaker connection for the L1 voltage pole is located at the second height position and the circuit breaker connection for the L2 voltage pole is located at the third height position, The circuit breaker connection for the L2 voltage pole is disposed at the second height position, and the circuit breaker connection for the L1 voltage pole is provided.ThirdSince the circuit breaker connection part is inserted and connected to the terminal part of the circuit breaker from both sides of the arrangement position of the conductive bar, it can be connected to the voltage electrodes of L1 and L2 in a well-balanced manner. , L2 voltage poles can be selected by changing the height position of the circuit breaker connection portion of the conductive bar, so that there is no need to make circuit breakers for L1 and L2, and the voltage pole circuit breaker There is no need to move the voltage electrode terminal portion inserted and connected to the connection portion to select L1 and L2, and the work of adjusting the load balance can be facilitated.
[0055]
According to a second aspect of the present invention, in the first aspect of the invention, the circuit breaker connection portion of the voltage electrodes of L1 and L2 is formed integrally with the conductive bar of each voltage electrode, and is bent to one side or the other side. Since the plurality of leg pieces are formed, the material removal of the conductive bar is improved.
[0056]
The invention of claim 3 is the number of circuit breakers in which the length of the conductive bar of the voltage electrode is arranged because the two adjacent leg pieces are bent to the opposite sides in the invention of claim 2. It can be easily changed according to the situation.
[0057]
  The invention of claim 4At least three conductive bars composed of two voltage electrodes L1 and L2 and one neutral electrode are extended in the parallel arrangement direction of the circuit breaker, and are connected to at least the circuit breaker of the three conductive bars. The circuit breaker connection portion is arranged in three stages in the vertical direction, and the terminal portion for the neutral pole that is plugged into the neutral pole among the three circuit breaker connection portions in the vertical direction is connected to the first stage. A plurality of circuit breakers provided at a second height position and provided with a voltage pole terminal portion at a second height position and plugged into one of the two voltage pole circuit breaker connection portions. In the single-phase three-wire distribution board arranged on both sides of the arrangement position, the circuit breaker connection portion of the voltage electrode of L1 on the one side in the longitudinal direction of the conductive bar is at the second height. The circuit breaker connection of the voltage pole of L2 and the third high The circuit breaker connection for the L2 voltage pole is located at the second height position and the circuit breaker connection for the L1 voltage pole is located at the third height position on the other side. Set upA first extension that extends the circuit breaker connection portion of the voltage poles of L1 and L2 in the direction in which the circuit breakers are arranged on the side of one of the circuit breakers arranged across the arrangement position of the conductive bar A piece, a second extension piece extending in the direction in which the circuit breakers are arranged on the other circuit breaker side arranged across the position where the conductive bar is disposed, and the first and second extensions. The first and second extending pieces of one conductive bar each integrally formed by a connecting piece for connecting the pieces together, and the circuit breaker connecting portion of the neutral pole is connected to the circuit breaker The two conductive bars that extend in the parallel direction and are arranged in parallel to the first and second extension pieces can easily identify the polarity of the voltage poles of L1 and L2, and prevent polarity errors Easy to do.
[0058]
  The invention of claim 5At least three conductive bars composed of two voltage electrodes L1 and L2 and one neutral electrode are extended in the parallel arrangement direction of the circuit breaker, and are connected to at least the circuit breaker of the three conductive bars. The circuit breaker connection portion is arranged in three stages in the vertical direction, and the terminal portion for the neutral pole that is plugged into the neutral pole among the three circuit breaker connection portions in the vertical direction is connected to the first stage. A plurality of circuit breakers provided at a second height position and provided with a voltage pole terminal portion at a second height position and plugged into one of the two voltage pole circuit breaker connection portions. In the single-phase three-wire distribution board arranged on both sides of the arrangement position, the circuit breaker connection portion of the voltage electrode of L1 on the one side in the longitudinal direction of the conductive bar is at the second height. The circuit breaker connection of the voltage pole of L2 and the third high The circuit breaker connection for the L2 voltage pole is located at the second height position and the circuit breaker connection for the L1 voltage pole is located at the third height position on the other side. Set upA first extension that extends the circuit breaker connection portion of the voltage poles of L1 and L2 in the direction in which the circuit breakers are arranged on the side of one of the circuit breakers arranged across the arrangement position of the conductive bar A piece, a second extension piece extending in the direction in which the circuit breakers are arranged on the other circuit breaker side arranged across the position where the conductive bar is disposed, and the first and second extensions. The first and second extending pieces of one conductive bar each integrally formed by a connecting piece for connecting the pieces together, and the circuit breaker connecting portion of the neutral pole is connected to the circuit breaker Since one conductive bar extending in the parallel direction and disposed in parallel with the first and second extending pieces is provided, in addition to the effect of the fourth aspect, the number of conductive bars can be reduced. The arrangement | positioning operation | work of an electroconductive bar becomes easy.
[0059]
  The invention of claim 6At least three conductive bars composed of two voltage electrodes L1 and L2 and one neutral electrode are extended in the parallel arrangement direction of the circuit breaker, and are connected to at least the circuit breaker of the three conductive bars. The circuit breaker connection portion is arranged in three stages in the vertical direction, and the terminal portion for the neutral pole that is plugged into the neutral pole among the three circuit breaker connection portions in the vertical direction is connected to the first stage. A plurality of circuit breakers provided at a second height position and provided with a voltage pole terminal portion at a second height position and plugged into one of the two voltage pole circuit breaker connection portions. In the single-phase three-wire distribution board arranged on both sides of the arrangement position, the circuit breaker connection portion of the voltage electrode of L1 on the one side in the longitudinal direction of the conductive bar is at the second height. The circuit breaker connection of the voltage pole of L2 and the third high The circuit breaker connection for the L2 voltage pole is located at the second height position and the circuit breaker connection for the L1 voltage pole is located at the third height position on the other side. Set upThe first conductive bar that extends in the direction in which the circuit breakers are arranged on one circuit breaker side of the circuit breaker connection portion of the voltage poles of L1 and L2 across the conductive bar arrangement position And the second conductive bar extending in the direction in which the circuit breakers are juxtaposed on the other circuit breaker side disposed across the arrangement position of the conductive bar, Since the circuit breaker connection portion is formed separately on the two conductive bars extending in the parallel arrangement direction of the circuit breaker and arranged in parallel with the first and second conductive bars, the voltage of L1 and L2 is simply The arrangement of the conductive bars on the poles may be reversed, the shape of the conductive bars is the same as the conventional one, and the manufacturing work of the conductive bars becomes easy.
[0062]
  A seventh aspect of the present invention is the circuit breaker connection portion of a plurality of conductive bars comprising the two voltage electrodes L1 and L2 and one neutral electrode in any one of the first to sixth aspects. Since the circuit breaker connection part of the conductive bar of the neutral pole is arranged as the uppermost stage, the uppermost circuit breaker connection part that is most likely to be touched is a neutral pole, and it is easy to prevent electric shock.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of essential parts of Embodiment 1 of the present invention.
FIG. 2 is a front view of the above.
FIG. 3 is a front view with the cover removed.
FIG. 4 is an exploded perspective view of the mounting portion.
FIG. 5 is an exploded perspective view of the main part of the mounting part.
FIG. 6 is an exploded perspective view showing the relationship between the elastic locking portion and the conductive bar.
FIG. 7 is an exploded perspective view showing the relationship between the elastic locking portion and the circuit breaker.
FIG. 8 is a partially omitted side view for explaining the arrangement of the circuit breaker according to the first embodiment, and is a broken side view.
FIG. 9 is a partially omitted side view for explaining the disposition of the circuit breaker according to the above embodiment.
FIG. 10 is a partially omitted side view for explaining the arrangement of the circuit breaker according to the first embodiment.
FIG. 11 is a perspective view showing the arrangement relationship between the fixed base and the circuit breaker.
FIG. 12 is a partially omitted side view for detachment and explanation of the circuit breaker according to the above embodiment.
FIG. 13 is an exploded perspective view showing a main part of a second embodiment of the present invention.
FIG. 14 is a diagram for explaining the relationship between the circuit breaker and the conductive bar.
FIG. 15 is an exploded perspective view showing a main part of a third embodiment of the present invention.
FIG. 16 is a diagram for explaining the relationship between the circuit breaker and the conductive bar.
FIG. 17 is an exploded perspective view showing a main part of a fourth embodiment of the present invention.
FIG. 18 is a diagram for explaining the relationship between the circuit breaker and the conductive bar.
FIG. 19Reference exampleIt is a disassembled perspective view which shows the principal part.
FIG. 20 is an explanatory diagram of the relationship between the circuit breaker and the conductive bar.
[Explanation of symbols]
2 Circuit breaker
20, 21 Circuit break connection
31-33 conductive bar
41-43 Conductive bar slot
51,52 Receiving blade

Claims (7)

At least three conductive bars comprising two voltage poles L1 and L2 and one neutral pole are extended in the parallel arrangement direction of the plurality of circuit breakers, and at least each circuit breaker of the three conductive bars In the single-phase three-wire distribution board in which the circuit breaker connection portion connected to is arranged in three stages in the vertical direction, and the plurality of circuit breakers are arranged on both sides of the conductive bar arrangement position,
All the circuit breakers are provided with a neutral electrode terminal portion that is plugged into the neutral electrode of the three circuit breaker connection portions in the vertical direction at the first height position and two voltages. A voltage electrode terminal portion that is plugged into one of the circuit breaker connection portions of the electrode is provided at one of the second height position and the third height position, and the voltage electrode A storage portion for storing the circuit breaker connection portion of the voltage electrode not connected to the terminal portion for use is provided at the second height position or the other height position of the third height position;
The circuit breaker connection portion of the voltage electrode of L1 is arranged at the second height position on one side of the both sides in the longitudinal direction of the conductive bar, and the circuit breaker connection portion of the voltage electrode of L2 is the second. The circuit breaker connection portion of the voltage electrode of L2 is arranged at the second height position and the circuit breaker connection portion of the voltage electrode of L1 is arranged at the third height position on the other side. A single-phase three-wire distribution board characterized by being arranged in the vertical position. The circuit breaker connection portion of the voltage poles of L1 and L2 is formed integrally with a conductive bar of each voltage pole, and is configured by a plurality of leg pieces each bent to one side or the other side. The single-phase three-wire distribution board according to claim 1. 3. The single-phase three-wire distribution board according to claim 2, wherein two adjacent leg pieces are bent opposite to each other. At least three conductive bars composed of two voltage electrodes L1 and L2 and one neutral electrode are extended in the parallel arrangement direction of the circuit breaker, and are connected to at least the circuit breaker of the three conductive bars. The circuit breaker connection portion is arranged in three stages in the vertical direction, and the terminal portion for the neutral pole that is plugged into the neutral pole among the three circuit breaker connection portions in the vertical direction is connected to the first stage. A plurality of circuit breakers provided at a second height position and provided with a voltage pole terminal portion at a second height position and plugged into one of the two voltage pole circuit breaker connection portions. In the single-phase three-wire distribution board arranged on both sides of the arrangement position of
The circuit breaker connection portion of the voltage electrode of L1 is arranged at the second height position on one side of the both sides in the longitudinal direction of the conductive bar, and the circuit breaker connection portion of the voltage electrode of L2 is the second. The circuit breaker connection portion of the voltage electrode of L2 is arranged at the second height position and the circuit breaker connection portion of the voltage electrode of L1 is arranged at the third height position on the other side. Placed in the position,
The first extension piece that extends the circuit breaker connection of the voltage electrodes of L1 and L2 in the direction in which the circuit breakers are arranged on one circuit breaker side disposed across the position where the conductive bar is disposed A second extending piece extending in the direction in which the circuit breakers are arranged on the other circuit breaker side disposed across the arrangement position of the conductive bar, and these first and second extending pieces The circuit breaker connection of the neutral pole is arranged in parallel with the circuit breaker connection of the neutral electrode, each of which is formed by the first and second extending pieces of one conductive bar integrally formed by a connecting piece for connecting between them. A single-phase three-wire distribution board characterized by comprising two conductive bars extending in the direction and arranged in parallel with the first and second extending pieces. At least three conductive bars composed of two voltage electrodes L1 and L2 and one neutral electrode are extended in the parallel arrangement direction of the circuit breaker, and are connected to at least the circuit breaker of the three conductive bars. The circuit breaker connection portion is arranged in three stages in the vertical direction, and the terminal portion for the neutral pole that is plugged into the neutral pole among the three circuit breaker connection portions in the vertical direction is connected to the first stage. A plurality of circuit breakers provided at a second height position and provided with a voltage pole terminal portion at a second height position and plugged into one of the two voltage pole circuit breaker connection portions. In the single-phase three-wire distribution board arranged on both sides of the arrangement position of
The circuit breaker connection portion of the voltage electrode of L1 is arranged at the second height position on one side of the both sides in the longitudinal direction of the conductive bar, and the circuit breaker connection portion of the voltage electrode of L2 is the second. The circuit breaker connection portion of the voltage electrode of L2 is arranged at the second height position and the circuit breaker connection portion of the voltage electrode of L1 is arranged at the third height position on the other side. Placed in the position,
The first extension piece that extends the circuit breaker connection of the voltage electrodes of L1 and L2 in the direction in which the circuit breakers are arranged on one circuit breaker side disposed across the position where the conductive bar is disposed A second extending piece extending in the direction in which the circuit breakers are arranged on the other circuit breaker side disposed across the arrangement position of the conductive bar, and these first and second extending pieces The circuit breaker connection of the neutral pole is arranged in parallel with the circuit breaker connection of the neutral electrode, each of which is formed by the first and second extending pieces of one conductive bar integrally formed by a connecting piece for connecting between them. A single-phase three-wire distribution board characterized by comprising one conductive bar extending in the direction and disposed in parallel with the first and second extending pieces. At least three conductive bars composed of two voltage electrodes L1 and L2 and one neutral electrode are extended in the parallel arrangement direction of the circuit breaker, and are connected to at least the circuit breaker of the three conductive bars. The circuit breaker connection portion is arranged in three stages in the vertical direction, and the terminal portion for the neutral pole that is plugged into the neutral pole among the three circuit breaker connection portions in the vertical direction is connected to the first stage. A plurality of circuit breakers provided at a second height position and provided with a voltage pole terminal portion at a second height position and plugged into one of the two voltage pole circuit breaker connection portions. In the single-phase three-wire distribution board arranged on both sides of the arrangement position of
The circuit breaker connection portion of the voltage electrode of L1 is arranged at the second height position on one side of the both sides in the longitudinal direction of the conductive bar, and the circuit breaker connection portion of the voltage electrode of L2 is the second. The circuit breaker connection portion of the voltage electrode of L2 is arranged at the second height position and the circuit breaker connection portion of the voltage electrode of L1 is arranged at the third height position on the other side. Placed in the position,
The circuit breaker connection of the voltage electrodes of L1 and L2 is connected to the first conductive bar extending in the direction in which the circuit breakers are juxtaposed on one circuit breaker side disposed across the position where the conductive bar is disposed. A circuit of the neutral electrode, each of which is individually formed by a second conductive bar extending in the parallel arrangement direction of the circuit breakers on the other circuit breaker side disposed across the arrangement position of the conductive bars A single-phase three-wire characterized in that the circuit breaker connection is individually formed on two conductive bars extending in the parallel arrangement direction of the circuit breaker and arranged in parallel with the first and second conductive bars Distribution board. The circuit breaker connection portion of the neutral conductive bar among the plurality of conductive bar circuit breaker connection portions composed of the two voltage electrodes L1 and L2 and one neutral electrode is disposed as the uppermost stage. The single-phase three-wire distribution board according to any one of claims 1 to 6 .

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