JP4442853B2 - Plug-in distribution board - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a plug-in type distribution board in which a main bus bar is installed perpendicular to the board surface.
[0002]
[Prior art]
[Patent Document 1]
JP-A-5-308705 [0003]
In the plug-in type distribution board in which the main bus bar is installed perpendicular to the panel surface, as shown in Patent Document 1, the branch breaker has a connection terminal on the back surface that is connected to the bus bar by being inserted from above the panel surface. May be connected to the bus bar via an adapter. In general, such an adapter is provided exclusively for the size of the case of the breaker and the terminal position.
[0004]
However, a load with a large current consumption needs to be connected to a large breaker with a large capacity, and a load with a small current consumption needs to be connected to a small breaker with a small capacity. In the distribution board as described above, when a large breaker and a small breaker are mixed and connected to the bus bar via the adapter, the size of the breaker housing and the terminal position are slightly different. If so, it may be possible to also use the adapter by adjusting the mounting position etc., but the size and terminal position of large breakers with large capacity and small breakers with small capacity are greatly different. There was a problem that it was necessary to prepare a dedicated adapter for each breaker, resulting in a high connection cost.
[0005]
[Problems to be solved by the invention]
The present invention solves the above-mentioned problems of the conventional example, and provides a distribution board that can be connected at low cost even when different types of breakers are mixed in a plug-in type distribution board having a bus bar perpendicular to the board surface. It is something to try.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a plug-in type distribution board in which a main bus bar is installed perpendicular to the board surface, and a plug-in adapter connected to the main bus bar from above the board surface. A large breaker is connected horizontally and a branch bus bar is connected to the terminal connection on the upper surface of the plug-in type adapter attached to the adapter so that the horizontal length of these adapters extends above the main bus bar. A branch circuit portion having a width not exceeding the width is formed, and a small breaker is connected to the branch bus bar of the branch circuit portion. The top surface of the adapter is composed of a branch bus bar provided in a direction orthogonal to the main bus bar and a breaker connected to the branch bus bar, or provided on the top surface of the adapter parallel to the main bus bar. It can consist of a branch bus bar and a breaker connected to the branch bus bar. Furthermore, the adapter is composed of a case and a connection bar, and the connection bar can be exchanged.
[0007]
The present invention is a plug-in type distribution board in which a main bus bar is installed perpendicular to the board surface, and a branch circuit portion is formed via a plug-in type adapter that can be connected from above the board surface. It is intended to provide a distribution board in which different types of breakers can be connected to the board at a low cost.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments and reference embodiments of the present invention will be described.
In FIG. 1 to FIG. 9, 1 is a main breaker of the distribution board, and 2 is three main bus bars connected to the load side of the main breaker 1 through connection buses 3. These main bus bars 2 are installed perpendicular to the board surface 4. Reference numeral 5 denotes an adapter fixing rail installed on both sides of the main bus bar 2. In the present invention, plug-in type adapters 6 are attached to these main bus bars 2 from above the board surface. Furthermore, a breaker 14 is attached to the main bus bar 2 via the adapter 6.
[0009]
The adapter 6 includes a case 7 and three connection bars 8 as shown in FIGS. In the front side portion of FIG. 2, the case 7 is omitted and only the connection bar 8 is shown floating in the air. Each connection bar 8 is formed by connecting a leg plate 9 parallel to the board surface 4 and an upper terminal portion 10 through a vertical portion 11, and one plug 12 to the main bus bar 2 is provided on the lower surface of the leg plate 9. Is provided. The plugs 12 are repositioned so that they can be inserted into different main bus bars 2 respectively.
[0010]
The terminal portion 10 is parallel to the upper surface of the case 7 at a predetermined distance from the upper surface of the case 7. As shown in FIG. 2, the shape of the terminal portion 10 may be a U shape, a shape corresponding to a screw terminal with a screw hole, or a flat shape corresponding to a plug-in terminal. The adapter 6 having such a connection bar 8 is attached to the main bus bar 2 as shown in FIGS. A breaker fixing means 13 is provided on the upper surface of the adapter 6. The fixing means 13 may be an appropriate mounting bracket other than a screw hole. In addition, attachment holes 21 for attachment to the adapter fixing rail 5 are provided at both ends of the case 7.
[0011]
FIG. 1 shows a reference embodiment of the present invention, and four large-capacity breakers 14 are mounted on the upper surface of an adapter 6 connected to the main bus bar 2. The breaker 14 is provided with a screw terminal, and the terminal portion 10 of the connection bar 8 is screwed. As shown in the lower part of FIG. 1, three parallel branch bus bars 15 are connected to the load-side terminal of a large-capacity breaker 14 mounted on the upper surface of the adapter 6, and a small breaker is connected to the branch bus bar 15. 16 is connected to form a branch circuit portion. The outer two branch bus bars 15a and 15c of the branch bus bar 15 are set to have substantially the same height as the load-side terminal of the breaker 14, and the center branch bus bar 15b is bent to form another end. Compared to the two branch bus bars 15a and 15c, the bar is disposed at a position higher than the upper surface of the case 7.
[0012]
In this reference embodiment , the branch bus bar 15 is connected to the load terminal of the breaker 14 connected to the adapter 6, and a plurality of small breakers 16 are connected from the side by lead wires or branch lead bars. These small breakers 16 are preferably arranged on the support plate 17 so that the breaker 14 and the handle are at the same height. In this embodiment, the branch bus bar 15 and the breaker 15 are formed by setting the outer two branch bus bars 15a and 15c of the branch bus bar 15 constituting the branch circuit portion to substantially the same height as the load-side terminal of the breaker 14. The connection part with 14 load side terminals can be made into a simple shape. In addition, the said branch circuit part shall be what laminated | stacked the branch bus bar up and down, and may comprise a small breaker by the plug-in breaker corresponding to this.
[0013]
However, in the first embodiment shown in FIG. 7, the branch bus bar 18 is directly connected to the terminal connection portion 19 on the upper surface of the adapter 6. The branch bus bar 18 extends in a lateral direction orthogonal to the main bus bar 2, and a plurality of small breakers 16 are connected to the side surfaces thereof. That is, the terminal connection portion 19 of the adapter 6 is provided with a central terminal connection portion 19b at a position higher than the outer terminal connection portions 19a and 19c with respect to the upper surface of the case 7, and one outer terminal connection portion is connected to the other. The terminal connection portion 19a is curved. A branch bus bar 18 is connected to the terminal connection portion 19, and a small breaker 16 is connected to the branch bus bar 18 by a lead wire or a branch lead bar to constitute a branch circuit portion. The end of the branch bus bar 18 that is not connected to the terminal connection 19 is supported by a bus support (not shown) attached to the upper surface of the case 7.
[0014]
A blind 22 is installed on a main bus bar that does not require the branch breaker 14, and the blind 22 is provided with mounting holes 23 for the adapter fixing rail 5 at both ends as in the case 7 with the adapter 6. However, the width is approximately half that of the case 7 of the adapter 6. The blind 22 may be one in which the connection bar 8 is removed from the adapter 6 and the case 7 is used. A support plate 24 is attached between the adapter 6 and the blind 19, and a small breaker 16 is attached thereon.
[0015]
In this embodiment, the branch circuit portion is provided above the main bus bar 2 via the adapter 6 and the branch circuit portion has a width that does not exceed the lateral length of the adapter 6, thereby reducing the width of the distribution board. In addition, since the branch bus bar 18 constituting the branch circuit unit is provided in a direction orthogonal to the main bus bar 2, the wiring to the load of the small breaker 16 can be easily pulled out from the lower side of the distribution board. It becomes. The branch circuit unit may be configured by stacking branch bus bars on the top and bottom, and forming a small breaker with a corresponding plug-in breaker.
[0016]
Also in the second embodiment shown in FIG. 8, the branch bus bar 26 is directly connected to the terminal connection portion 25 on the upper surface of the adapter 6, but the branch bus bar 18 extends in parallel with the main bus bar 2. . The terminal connection portions 25a, 25b, and 25c of the adapter 6 are parallel to the upper surface of the case 7 at a predetermined distance, and the lengths of the terminal connection portions 25a, 25b, and 25c according to the direction in which the branch bus bars are arranged. Are provided so as to become shorter in order. In the illustrated example, the terminal connection portion 25a is the longest and the terminal connection portion 25c is the shortest. Further, the end of the branch bus bar 26b connected to the terminal connection portion 25b is bent, and the branch bus bar 26b is disposed at a higher position than the other two branch bus bars 26a and 26c.
[0017]
The end of the branch bus bar 26 that is not connected to the terminal connection portion is supported by a bus bar support (not shown) attached to the blind 22. A support plate 27 is attached between the adapter 6 and the blind 22, and a small breaker 16 is attached thereon. Similar to the first embodiment, the branch bus bar and the small breaker 16 thus provided are connected by a lead wire or a branch lead bar to form a branch circuit unit.
[0018]
In this embodiment, the branch circuit portion is provided above the main bus bar 2 via the adapter 6 , and the branch circuit portion has a width that does not exceed the lateral length of the adapter 6. Since the branch bus bar 18 constituting the branch circuit unit is provided in parallel with the main bus bar 2, the wiring to the load of the small breaker 16 can be connected to the side of the distribution board like the other large breakers 14. It becomes easy to pull out the wiring from the side. The branch circuit unit may be configured by stacking branch bus bars on the top and bottom, and forming a small breaker with a corresponding plug-in breaker.
[0019]
In another reference form shown in FIG. 9, a terminal block 28 connected to the terminal connection portion 10 is mounted on the upper surface of the adapter 6, and a plurality of small breakers 16 are connected to the lead wires 20 on the terminal block 28. . In this case, since the terminal block 28 and the small breaker 16 serve as a branch circuit portion, and a plurality of breakers 16 are mounted on the upper surface of one adapter 6, the branch circuit portion is as large as one adapter 6. The mounting space of the adapter 6 on the bus bar 2 can be used effectively.
In this embodiment, a plurality of breakers 16 may be directly connected to the terminal connection portion of the adapter 6 without providing the terminal block 28.
[0020]
It is preferable that the three connection bars 8 of the adapter 6 be detachable with respect to the case 7 so that the phase balance of the power source can be adjusted by changing the installation position. Further, as described above, it is preferable that the case 7 with the connection bar 8 removed can be used as a blind.
[0021]
【The invention's effect】
As described above, according to the plug-in type distribution board of the present invention, the branch circuit portion is provided via the plug-in type adapter on the main bus bar installed perpendicular to the board surface. There is an advantage that different types of breakers can be connected at low cost. Further, as shown in each embodiment, the layout of the branch circuit section has many degrees of freedom, and the phase balance can be easily adjusted.
[Brief description of the drawings]
FIG. 1 is a front view (A) and a bottom view (B) of a distribution board showing a reference form .
FIG. 2 is a perspective view of an adapter and a connection bar.
FIG. 3 is a perspective view of an adapter.
FIG. 4 is a bottom perspective view of the adapter.
FIG. 5 is a partial cross-sectional view showing a state where the adapter is attached to the main bus bar.
FIG. 6 is a perspective view showing a state where the adapter is attached to the main bus bar.
FIG. 7 is a front view of a distribution board showing the first embodiment.
FIG. 8 is a front view of a distribution board showing a second embodiment.
FIG. 9 is a front view of a distribution board showing another embodiment .
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main breaker 2 Main bus bar 3 Connection metal fitting 4 Board surface 5 Adapter fixing rail 6 Adapter 7 Case 8 Connection bar 9 Leg plate 10 Connection part 11 Vertical part 12 Plug 13 Fixing means 14 Large capacity breaker 15 Branch bus bar 16 Small breaker 17 Support Plate 18 Branch Bus Bar 19 Terminal Connection 20 Lead Wire 21 Mounting Hole 22 Blind 23 Mounting Hole 24 Support Plate 25 Terminal Connection 26 Branch Bus Bar 27 Support Plate 28 Terminal Block

Claims (4)

In the plug-in type distribution board in which the main bus bar is installed perpendicularly to the board surface, a large breaker is connected laterally on the plug-in type adapter connected to the main bus bar from above the board surface. A branch bus bar is connected to the terminal connection portion on the upper surface of the plug-in type adapter attached to the top of the main bus bar to form a branch circuit portion having a width not exceeding the lateral length of these adapters. A plug-in distribution board characterized by a small breaker connected to the branch bus bar of the branch circuit section. 2. The plug-in type according to claim 1, wherein the branch circuit section includes a branch bus bar provided on an upper surface of the adapter in a direction orthogonal to the main bus bar, and a breaker connected to the branch bus bar. Distribution board. 2. The plug-in type power distribution device according to claim 1, wherein the branch circuit unit includes a branch bus bar provided on the upper surface of the adapter in parallel to the main bus bar, and a breaker connected to the branch bus bar. Board. The plug-in type distribution board according to any one of claims 1 to 3, wherein the adapter includes a case and a connection bar, and the connection bar is replaceable.

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