JPS5812487Y2 - Switchboard busbar - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement in the connection structure between a horizontal busbar in a power distribution board and a branch busbar branching from the horizontal busbar at right angles.

In the switchboard, as shown in Figure 1, three horizontal main busbars 1R, Is, and Is are arranged to form three phases.
When the branch buses 2R, 2S, and 2T are branched at right angles from each of the branch buses 2R, 2S, and 2T, a predetermined insulation distance necessary to ensure insulation must be provided between the branch buses and the intersecting main buses of different phases.

Conventionally, as shown in the figure, for example, three phases and three main busbars I R, IS, and I T are supported by two supporting members 5,
By bending the ends of the branch busbars branching from the main busbar, an insulation distance between the intersecting busbars of different phases is ensured.

However, such a conventional busbar structure requires a process of bending the busbar, and it is necessary to prepare various busbars with different bending widths depending on the voltage. Since the bending width becomes large, a large space must be provided around the generatrix when including the distance between the generatrix and the ground.

In addition, there is a drawback that supporting materials must be made of considerably strong strength so that the mutual spacing must be increased in order to ensure an insulating distance between the branch busbars.

The object of this invention is to eliminate the above-mentioned conventional drawbacks and provide a busbar structure in which a branch busbar can be connected to a main busbar without processing.

To specifically explain the present invention in detail with reference to examples, the second
As shown in the figure, a support plate 6 made of an insulating material having three notched windows 4R, 4S, and 4T is made at positions corresponding to the connection positions of the main busbar and the branch busbar, and these windows 4R, 4S are
, 4T, for example, thin conductive spacers 3R and 3S that fit into the spacers 3R and 4T.

Make 3 pieces in advance.

When assembling, attach the support plate 6 to the side wall member of the switchboard, etc., and insert the spacers 3R, 3S, and 3T into each of the three windows 4R94S and 4T of the support plate 6, while
Insert the spacer from both the top and bottom sides of the support plate.
Main buses IR, IS, IT of each phase and branch bus 2R,
By arranging 2S and 2T and connecting both busbars through spacers, the main busbars and the branch busbars are connected.

To connect the two busbars, for example, as shown in the assembled state 9 in FIG. 3, the support plate 6 is interposed between the two lines by strongly tightening four conductor bolts at each branch position. That's fine.

The mutual positions of the three windows 4R, 4S, and 4T and the support plate 6 are adjusted so that in the assembled state, the distance between the branch busbars and the distance between the main busbar and the branch busbar are the distances required for insulation. The thickness is determined.

Incidentally, the main busbars of each phase can be fixed to key points of the support plate 6 by means such as screws, if necessary, in order to counter electromagnetic force between the main busbars.

Since the insulation distance between the main busbar and the branch busbar is ensured by the support plate 6, the spacers 3R, 3S, and 3T are used more as spacers between the two circuits than as spacing bodies that maintain the distance between the two circuits. Acts as a connector for making electrical connections.

However, if there is a request to make the distance between the two lines larger than the thickness of the support plate 6 due to the mechanical arrangement, in this case, the spacer 3R is used.

By setting the thickness of 3S and 3T to the required thickness greater than the thickness of the support plate 6, the spacing between the two lines can be reduced to the thickness of the support plate 6.
The desired value can be selected regardless of the thickness.

In such a case, the spacer therefore also acts as a spacing body.

The shape of the window 4R etc. may be any shape, such as a round shape, an oval shape, etc., in addition to the square shape shown in the illustrated example.

In addition, in order to adapt to various switchboards, for example, 3.
It is advantageous to design the two windows so that they are spaced relative to each other.

In addition to conductor spacers, nonconductor spacers may also be used.

According to this invention, all the drawbacks of the conventional method are eliminated.

In particular, since the support plate 6 made of insulating material insulates the main bus bar and the branch bus bar, the insulation distance between the two circuits can be reduced, and the overall space around the bus bar can be narrowed. This has the effect of reducing the overall depth dimension.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a conventional intersecting generatrix, FIG. 2 is an exploded perspective view of the intersecting generatrix according to the present invention, and FIG. 3 is an assembled perspective view of the generatrix shown in FIG. I R, I S, I T... Main bus, 2R, 2
S, 2T...branch bus, 3R, 3S, 3T...
...Spacer, 4R, 4S, 4T...Window,
6...Support plate.

Claims (1)

[Scope of Claim for Utility Model Registration] A main bus bar support plate made of an insulating material and having a required number of notched windows is provided at positions corresponding to the connection positions of the intersecting main bus bar and branch bus bar, and a spacer made of a conductor is provided for each notched window. Insert the spacer onto the support plate to sandwich it. A switchboard bus bar, characterized in that a main bus bar and a branch bus bar are arranged from lower surfaces, the horizontal bus bar and the branch bus bar are mutually coupled via a spacer, and the main bus bar is fixed to the support plate. .