JPS6343814Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a connection structure between a main bus bar introduced into a switchboard and a branch bus bar connected thereto.

When a plurality of rows of switchboards are installed, a main bus bar is introduced so as to pass through the switchboards laterally. In each switchboard, branch buses are connected to the main bus, and these are further connected to respective loads. The main busbar and branch busbars are made of copper strips and are insulated. Further, the main bus bar is supported by each switchboard via an insulator. The copper strip at the connection between the main busbar and branch busbar is exposed, and the insulating cover is covered after connection.

The present invention consists of dividing the main bus bar into a plurality of elements consisting of insulating coated copper strips of appropriate length, connecting the exposed ends of the elements by overlapping each other, and connecting the connected parts with the same insulating coated copper strips. The exposed ends of the branch busbars consisting of By providing built-up parts with the same cross-sectional shape, we prevent differences in level and shape from occurring in the connection parts, and the copper band receiving opening of the insulating cover can be uniformly formed in the same shape, giving versatility to the insulating cover. It is intended to hold up.

Embodiments of the present invention will be described below with reference to the figures. A main bus bar 1, which is provided so as to penetrate through the interior of a power distribution board arranged in a plurality of rows in the horizontal direction, is composed of a plurality of main bus bar elements 2 that are connected to each other in opposite directions.

The main bus element 2 consists of a copper strip 4 covered with an insulating coating resin 3, and both ends of the copper strip 4 have exposed connecting portions 4a, 4a, and bolt holes 4b are bored therein. There are built-up parts 3 on both ends of the coating resin 3.
a, 3a are formed. This built-up portion 3a is
The bonding surface 4c of the copper strip 4 is formed in a size that is located at the center of the cross section of the built-up portion. Therefore, the main bus bar element 2 is assembled with the upper and lower sides on opposite sides, and the joint surface 4
When the copper strip connecting portions 4a, 4a are overlapped with each other, and the copper strip connecting portions 4a, 4a are combined with each other, and the bolts 5 are used to connect the copper strip connecting portions 4a, 4c, there will be no large step difference.

The branch busbar 6 has a copper strip 7 having a smaller cross section than that of the main busbar 1 and is similarly covered with an insulating coating resin 8.
At least one end connection portion 7a of the copper strip 7 is exposed, and a bolt hole 7b is bored therein. The coating resin build-up portion 3 of the main busbar element 2 is provided at the end of the coating resin 8.
A built-up portion 8a having the same shape and size as a is formed.
The branch busbar 6 is connected to the connection portions of the two main busbar elements 2, 2 with the connection portions 7a of the branch busbars 6 overlapping each other with bolts 5. The other end of the branch bus 6 is connected to a load side (not shown).

The connecting portions 4a, 7a of the main busbar elements 2, 2 and the branch busbar 6 are covered with a box-shaped cover 9 made of insulating resin. This insulating cover 9 is constructed by abutting a pair of upper and lower halves 10 and 11. The three side faces of the two halves 10 and 11 are arranged so as to face each other so as to form openings of the same shape that can fit into the resin overlays 3a and 8a of the main busbar elements 2 and 2 or the branch busbar 6, respectively, when they are brought together. It has notches 12 and 13. Further, both halves 10 and 11 have screw holes 10a and 11a facing each other on their peripheries, and can be connected with screws 15. A support insulator 14 is fixed to one side of one half 10 where the notch 12 is not provided. The end portion of the support insulator 14 can be fixed directly or indirectly to the main body of the switchboard.

Grooves 12a and 13a are formed inside the notches 12 and 13 to be filled with silicone resin when assembling the cover.

Next, the effect will be explained. The main bus element 2 is
The main generatrix 1 is configured by being connected in a vertically opposite manner with the built-up portion 3a facing upward or downward. At least one connection portion is provided in each of the power distribution boards arranged in a row. The connecting portion 7a of the branch busbar 6 is superimposed on the lower surface of the connecting portion of the main busbar elements 2, 2, and is coupled with the bolt 5. Then, the groove 12a in the notch 12 is filled with silicone resin, one half 10 is applied to the lower side of the busbar connection part, and each notch 12 is connected to the coating resin overlay of the main busbar element 2 or the branch busbar 6. 3a,
8a, fill the groove 13a in the notch 13 of the other half 11 with silicone resin and cover the busbar connection part from above, and fit the notch 13 on the top of the coating resin overlay parts 3a and 8a. Upper and lower halves 10,1
1 and connect with screw 15. In this way, the branch bus 6 is connected to the main bus 1 and sends current to the load side. The cross-sectional area of the copper strips 4 and 7 will differ depending on the power source used, but if the same-shaped covering resins 3 and 8 are molded in the same mold, the same insulating cover 9 will be produced regardless of the difference in the cross-sectional area of the copper strips 4 and 7. can be used for general purposes. Support insulator 1 for one half 10 of cover 9
4 to the main body of the switchboard, the busbar connection part will be firmly supported.

Note that the present invention is not limited to the illustrated embodiment. For example, the insulating cover 9 may be used at a connecting portion between two main bus elements 2, 2, or a connecting portion between one main bus element 2 and a branch bus 6, etc.
It can be used as a cover for the busbar connection part of a book. In this case, since two openings in the insulating cover 9 are sufficient, the other one is unnecessary, and can be filled with stuffing to close it if necessary. Furthermore, since the connection part does not necessarily need to be supported by the switchboard main body, the support insulator 14 is not necessarily supported by the insulating cover 9.
It doesn't have to be one with.

As explained above, the present invention provides the same-shaped built-up parts 3a and 8a at the ends of the coating resin 3 and 8 of the main busbar element 2 and the branch busbar 6, and the other cover 9.
Since the structure is provided with openings into which the built-up parts 3a and 8a fit, the shape of the connection part is determined,
The advantage is that the cover 9 can be made versatile, easy to manufacture, and cost reduced.

[Brief explanation of the drawing]

Fig. 1 is a front view of the main bus bar element, Fig. 2 is a plan view thereof, Fig. 3 is a side view thereof, Fig. 4 is a partial front view of the branch bus bar, Fig. 5 is a plan view thereof, and Fig. 6 is a front view of the main bus bar element. Figure 7 is a front view of one half of the insulating cover, and Figure 7 is a plan view of the same.
Fig. 8 is a side view of the same, Fig. 9 is a front view of the other half of the insulating cover, Fig. 10 is a plan view of the same, Fig. 11 is a side view of the same, and Fig. 12 is a view of the insulating cover after connecting the busbars. Perspective view with only one half attached, No. 13
The figure is a plan view of the same, Fig. 14 is a front view of the connected state with the insulating cover attached, and Fig. 15 is the same XV-
It is an XV sectional view. 1... Main bus bar, 2... Main bus element, 3...
...Coating resin, 3a... Overlay part, 4... Copper band, 4a
... Connection part, 4c ... Joint surface, 6 ... Branch bus bar,
7...Copper band, 7a...Connection part, 8...Coating resin,
8a... Overlay part, 9... Insulation cover, 10, 11
...Insulation cover half, 12, 13...Notch, 14
...Support insulator.

Claims (1)

[Claims for Utility Model Registration] (1) Consists of a copper strip with both ends exposed and the other parts covered with insulation coating resin, with build-up parts formed on both ends of the insulation coating resin, and At least two main bus bar elements arranged such that the joint surface of the connection part is located at the center of the cross section of the built-up part, and that can be connected oppositely with the joint surfaces of the joint part facing each other vertically; It consists of a pair of halves made of insulating resin that can be combined to cover the connection parts of the elements, and both halves have a notch that forms an opening that can fit with the built-up part of the main bus element when combined. A connection structure for busbars in a switchboard, which includes insulating covers formed on two opposing sides. (2) It consists of a copper strip with a connecting part that can be polymerized and connected to the connecting part of the main bus bar element exposed at one end and the other part covered with an insulating coating resin, and the connecting part side end of the insulating coating resin is further comprising a branch bus bar having a built-up part having the same cross-sectional shape as the cross-section of the insulating coating resin build-up part of the bus bar element; further comprising the branch bus bar on both halves of the insulating cover when coupled; The busbar in a switchboard according to claim (1) of the utility model registration, wherein both halves of the insulating cover are further provided with openings that can fit into the built-up parts of the branch busbar coating resin when coupled. connection structure. (3) One half of the insulating cover is provided with a support insulator that can be fixed to the switchboard main body. .