JPH0713183Y2 - Insulated connection structure of insulated bus bar - Google Patents

Description

[Detailed Description of the Invention] A. Field of Industrial Application The present invention relates to an insulation connection structure of an insulation busbar.

B. Outline of the Invention In the insulation connection structure of an insulation bus bar, the present invention provides a connection conductor or a connection conductor and an insulation connection conductor in which an insulator is integrally formed on the outside of a nut abutting the connection conductor, and an insulation connection conductor is formed on the head. By tightening and fixing to both sides of the bare conductor part of the insulating busbar with bolts that are closely attached, insulation performance, workability and work efficiency are improved, maintenance is facilitated, and deterioration of the insulator is prevented. .

C. Prior Art FIG. 3 is a cross-sectional view showing a conventional example of an insulating connection structure of an insulating bus bar.
The connection parts 16 of 1 and 2 are the bare conductor parts 1a and
2a, the end faces of which are abutted, and each of these bare conductor parts is
On both side surfaces of 1a, 2a, contact conductors 5 and 9 that are sandwiched integrally across the respective bare conductor portions 1a and 2a are brought into contact, and the respective bare conductor portions 1a and 2a and a pair of connection conductors 5 and 9 are provided. The bolt 12,13
And the nuts 6 and 7 are tightened and fixed, and the insulated buses 1 and 2 are connected. Then, the insulating tape 17 is wound around the outer periphery of the connected connecting portion 16 for insulation treatment.

D. Problems to be solved by the invention However, according to the conventional insulation bus bar connection structure, the insulation bus bar is
Since the insulating tape 17 is wound after connecting 1 and 2, there are problems that the number of working steps is large, the workability and work efficiency are poor, and the insulation performance is not reliable.

Also, as shown in FIG. 3, the heads 12a, 13a of the bolts 12, 13 are
Since it is difficult to tightly wind the insulating tape 17 around the portion where the nuts 6 and 7 contact the connecting conductors 5 and 9, a gap 18 is formed in that portion, and the insulation deterioration of the insulating tape 17 due to corona discharge occurs. There is also the problem of coming.

The present invention has been made to solve the above-mentioned problems of the prior art, and an object thereof is to improve the insulation performance, workability, and work efficiency, facilitate maintenance, and prevent deterioration of the insulating material.

E. Means for Solving the Problems In the present invention, the bare conductor portions of the insulated busbars that are connected to each other are arranged to face each other, and the connection conductors are applied to both side surfaces of the bare conductor portions across the bare conductors. In such a structure that the connecting conductors and the both bare conductor portions are integrally fastened with bolts and nuts to connect the both insulating busbars, the connecting conductors are in contact with the bare conductor portions. While integrally forming the opposite side with an insulator, the nut is embedded in at least one of the insulators, the bolt is inserted from the outside of the other insulator and screwed into the nut to be integrally fastened, The structure is that the head of this bolt is covered with an insulator.

F. Working Insulation is integrally molded on the outside of the connection conductor, or insulation is integrally molded on the outside of the connection conductor and nut. Since the structure is tightened and fixed on both sides of the bare conductor, the insulation busbar can be connected and insulated at the same time, and there is no gap between the bolt head or nut and the insulator. Deterioration can be prevented.

G. Embodiment Hereinafter, the present invention will be described based on an embodiment shown in FIG. 1 and FIG.

FIG. 1 is a cross-sectional view showing an insulation connection structure of an insulating busbar, and FIG. 2 is a perspective view of a busbar connecting portion. In these drawings, a bare conductor portion 1a of a pair of insulation-coated insulating busbars 1 and 2, The end faces of 2a are butted together. These bare conductor portions 1a and 2a are sandwiched by insulating connecting conductors 3 and 4 from both side surfaces thereof as shown in FIG. 2, and are integrally connected by bolts 12a and 13a and nuts 6 and 7. These insulated connection conductors 3 and 4 are formed as follows. That is, the insulating connecting conductor 3 whose one side surface (lower surface in FIG. 1) is hollow is a connecting conductor 5 that is in contact with the one side surface (lower surface) across the bare conductor portions 1a and 2a. Of a pair of nuts 6 and 7 arranged on the outer side surface of the connector and an insulator 8 integrally formed on the outside of the connecting conductor 5 and the nuts 6 and 7.
It consists of The insulated connecting conductor 4 having the other side surface (upper surface in FIG. 1) is formed integrally with the connection conductor 9 which straddles the bare conductor portions 1a and 2a and abuts on one side surface (upper surface) thereof. It consists of an insulator 10.

Bolt insertion holes 4a, 1b, 5a, 4b, 2b, 5b are provided at positions corresponding to the nuts 6, 7 on the upper surface side insulated connection conductor 4, the bare conductor portions 1a, 2a and the lower surface side connection conductor 5, respectively. Has been formed.

Then, from the outside of the insulating connection conductor 4 on the upper surface side, through the insulating washer 11, the respective bolt insertion holes 4a, 1b, 5a, 4b, 2b, 5 of the bare conductor portions 1a, 2a and the connecting conductor 5 on the lower surface side are inserted.
Bolts 12 and 13 penetrate b and are screwed into the nuts 6 and 7. Insulators 14 and 15 are integrally formed on the outer peripheries of the heads 12a and 13a of the bolts 12 and 13, respectively.

Next, the operation of the above embodiment will be described.

As described above, the connecting conductor 9 or the connecting conductor 5 and the insulating connecting conductors 4 and 3 in which the insulators 10 and 8 are integrally formed on the outside of the nuts 6 and 7 abutting the connecting conductors 5 are attached to the heads 12a and 13a. Since the insulators 14 and 15 are clamped and fixed to both sides of the bare conductors 1a and 2a of the busbars 1 and 2 by integrally molded bolts 12 and 13, the insulation busbars can be connected and insulated at the same time. Therefore, according to this embodiment, the insulation performance is improved, and as shown in FIG.
There is an effect that maintenance can be easily performed only by slimming or tightening 2, 13.

Insulators 14, 15 and 8 are integrally formed on the outer sides of the heads 12a and 13a of the bolts 12 and 13 and the nuts 6 and 7, respectively, and a gap is formed between these insulators 14, 15 and 8. Since it does not occur, there is also an effect that deterioration of the insulator due to corona discharge can be prevented.

In addition, in the above embodiment, the insulating connection conductor 3 on the lower surface side
A nut is provided only in a portion facing the bare conductor portion 5 on one side, and a nut is provided on the insulating connecting conductor 4 on the upper surface side in a portion facing the bare conductor portion 9 on the other side. The insulated connection conductors 3 and 4 on the side opposite to the nut may be screwed from the outer surface, and the same structure as the upper and lower insulation connection bodies 3 and 4 may be used. With the same structure, only one type of insulating connector is required, which has favorable effects on simplification of manufacturing and component management.

H. Effect of the Invention As is clear from the above description, according to the present invention, the insulator is integrally formed on the outer side of the connection conductor, or the insulator is integrally formed on the outer side of the connection conductor and the nut abutting on the connection conductor. Since the insulated connecting conductor is clamped and fixed on both sides of the bare conductor part of the insulating busbar with bolts whose head is covered with an insulator, the insulating busbar can be connected and insulated at the same time. In addition to improving efficiency and facilitating maintenance, it is possible to prevent deterioration of the insulator by eliminating the gap between the head of the bolt or the nut and the insulator to prevent corona discharge.

[Brief description of drawings]

FIG. 1 is a sectional view showing an insulation connecting structure of an insulating bus bar, FIG. 2 is a perspective view of FIG. 1, and FIG. 3 is a sectional view showing a conventional example of an insulating connecting structure of an insulating bus bar. 1,2 ...... Insulated busbar, 1a, 2a ...... Bare conductor part, 3, 4 ...... Insulated connection conductor, 5, 9 ...... Connection conductor, 6, 7 ...... Nut, 8, 10, 14, 15
…… Insulators, 12,13 …… Volts, 12a, 13a …… Heads.

Claims (1)

[Scope of utility model registration request] 1. A bare conductor portion of an insulating busbar connected to each other is disposed so as to face each other, and a connecting conductor is abutted on both side surfaces of the bare conductor portion so as to straddle these bare conductors. In a structure in which the bare conductor portion is integrally fastened with bolts and nuts so as to connect the both insulating busbars, the side opposite to the side where each connecting conductor abuts the bare conductor portion is integrally formed of an insulator. At the same time, the nut is embedded in at least one of the insulators, the bolt is inserted from the outside of the other insulator, screwed into the nut, and integrally fastened, and the head of the bolt is made of an insulator. Insulated connection structure of insulated bus bar characterized by being covered.