JPH04101376A - Conductive connection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a conductive connection device for connecting conductors in a switchboard or between conductors and equipment terminals.

[Conventional technology]

Conventionally, when making electrical connections between conductors in a switchboard, or between conductors and terminals of devices (such as transformers), it has been necessary to use rope wires between them for the purpose of absorbing dimensional errors and preventing conduction of minute vibrations. It is made up of a required number of flexible conductors and is connected by a conductive connection device with connection terminals formed at both ends.

FIG. 2 is a sectional view showing an example of the configuration of such a conventional conductive connection device, which is composed of a flexible conductor 2 and terminal portions 3 brazed to both ends of the flexible conductor 2, and connects three phases to be conductively connected. Conductors 4 and 5 are bolted to the terminal portions 3 of each phase silver. The flexible conductor 2 is, for example, made of a single knitted wire formed by knitting fine copper wires, or a combination of a plurality of knitted wires to give flexibility. There are those made of twisted aggregates of thin copper wires, and those with bellows-shaped hollow metal pipe structures.

[All to be solved by the invention] By the way, in this type of conductive connecting device, the longer the flexible conductor portion made of knitted wire, the higher the ability to absorb the error dimension. The cut portion of the flexible outer conductor has the property of not returning to its original dimensions. For this reason, when using a conductive connection device with a long flexible outer conductor, the flexible outer conductor will be stretched further than the initial installation state due to electromagnetic force caused by short-circuit current, and the flexible outer groove parts may come into contact with each other. , there was a risk of secondary short circuits occurring.

Furthermore, if there is a grounded object or other high-voltage conductor near the flexible outer conductor, there is a possibility that the deformation of the flexible outer conductor may cause dielectric breakdown with these objects.

An object of the present invention is to provide a conductive connection device that is less deformed even if electromagnetic force is generated due to a short circuit by shortening the flexible outer conductor portion.

[Means to solve the problem]

In order to achieve the object, the present invention comprises a flexible outer conductor portion and terminal portions formed at both ends of the flexible outer conductor portion,
In a conductive connection device for electrically connecting a conductor or a device to be connected to this terminal portion, a non-flexible outer conductor portion is inserted into an intermediate portion of the flexible outer conductor portion.

Further, the flexible outer conductor portion is formed by assembling knitted wires as required.

Furthermore, it is applied to connect between conductors built in a switchboard or between conductors and equipment terminals.

[Effect]

According to the structure of this invention, since the non-flexible outer conductor part is formed in the middle part of the flexible outer conductor part, the length of the flexible outer conductor part can be limited to only the required dimension, and electromagnetic force is generated when a short circuit occurs. Even if .

(Example〕 The present invention will be explained below based on examples.

FIG. 1 is a cross-sectional view showing the configuration of a conductive connecting device according to an embodiment of the present invention, in which a conductive connecting device 6 is connected to a non-flexible conductor 7 and is brazed to both ends of the non-flexible conductor 7. It consists of a flexible conductor 8 and a terminal part 9 brazed to the side opposite to the flexible conductor of the flexible conductor 8, and a three-phase conductor 4.5 is bolted to the silver terminal part 9 of each phase. It's tightened. The non-flexible conductor 7 is formed of a round bar-shaped or square bar-shaped conductor. The flexible conductor 8 is made of the same material as the flexible conductor 2 in the conventional configuration example shown in FIG. As a result, the length of the flexible conductor 8 can be made shorter than that of the conventional structure.

In FIG. 1, the required length of the conductive connection device is determined by the gap between the conductors 4.5. This gap varies depending on the design and layout of the electrical equipment, and can be quite long. However, as mentioned above, the flexible conductor 8 is used to absorb dimensional errors between the conductors 4 and 5 and to prevent transmission of vibrations, so for that purpose alone, the length of the flexible conductor 8 cannot be made that long. For example, it is sufficient if the required length is several tens of minutes. In the configuration shown in FIG. 1, non-flexible conductors 7 are used except for the flexible conductor 8 of the required length. When forming the conductive connecting device 6 to the required length, the length of the flexible conductor 8 is is maintained constant and the length of the non-flexible conductor 7 is adjusted, so that even if the entire length of the flexible conductor 6 increases, the deformation of the flexible conductor 6 due to electromagnetic force can be suppressed to below a certain value.

〔Effect of the invention〕

As mentioned above, in this invention, a non-flexible conductor is interposed in the middle part of a flexible conductor, so even if an electromagnetic force is applied during a short circuit, the deformation of the flexible conductor is small, and even if the entire length is long, A safe conductive connection device free from secondary short circuits can be provided.

In addition, by keeping the length of the flexible conductor constant and adjusting the length of the non-flexible conductor, it is possible to suppress the deformation of dimensions due to electromagnetic force to below a certain value even in conductive connection devices with different lengths. I can do it.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing the configuration of a conductive connecting device according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view showing an example of the configuration of a conventional conductive connecting device. 1.6:, I! Connection device, 2.8: Flexible conductor, 3.
9: Terminal part, 4.5: Conductor, 7: Impossibility diagram?

Claims (1)

[Claims] 1) A conductive connection device that includes a flexible conductor portion and a terminal portion formed at both ends thereof, and that electrically connects a conductor or a device to be connected to the terminal portion, A conductive connection device characterized in that a non-flexible conductor portion is inserted in an intermediate portion of the flexible conductor portion. 2) The conductive connection device according to claim 1, wherein the flexible conductor portion is formed by collecting a required number of knitted wires. 3) The conductive connection device according to claim 1 or 2, which is applied to connect between conductors built in a switchboard or between a conductor and a device terminal.