JPS5866277A - Method of connecting power cable conductor in same diameter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for connecting power cable conductors with the same diameter.

Conventionally, as a method for connecting electric cable conductors with the same diameter, it has been known to connect the opposing strands of twisted conductors to be connected by soldering, silver brazing, etc., but this method In the case of this connection method, since the conductor wire made of a highly conductive metal such as copper has good heat conduction, the heat during welding can easily be transferred to the insulating layer, causing it to burn out or deteriorate. Further, there are problems in that such welding and connection work requires a great deal of time and skill.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for connecting power cable conductors of the same diameter, which advantageously solves the above-mentioned problems.

Next, the present invention will be explained in detail using illustrated examples.

In order to carry out this invention and perform the same-diameter connection of the power cable conductors, first, as shown in FIG. A conical female point 3 is formed at the end of the strand 2A, and a female point 6 is formed on the end face of each strand 2B on the other side to match the female point 6. A conical female hole 4 is formed into which the hole 4 is tightly fitted. Next, as shown in FIG.
As shown in FIG. 6, both twisted conductors IA and IBe to be connected are coaxially abutted, and the area 6 near the terminals of both twisted conductors IA and IB including the abutted portion 5 is
are covered with a thin-walled sleeve 7, and then compressed from the periphery in a radial direction by a crimping machine (not shown) to form wires 2A facing each other,
The twisted conductors 1A and IB are connected with the same diameter by metallurgically crimping and bonding the twisted conductors 1A and 2B to each other at the fitting part between the female pointed head 3 and the female hole 4, thereby preventing the formation of a bulge at the connection part. All work is completed.

In addition, if the terminal vicinity 6 of the side conductors IA and IB is covered and compressed with the thin sleeve 7 as in the above-mentioned embodiment,
It is possible to effectively prevent the compressive force from being unevenly distributed, and also to prevent the surface of the compressed portion from being disturbed and to maintain the surface condition smoothly.

Further, when this invention is fully practiced, the female pointed head 6 and the female hole 4 formed at the end of each strand 2A on one side and the end face of each strand 2B on the other side are as shown in FIG. It is not limited to the shape shown, and other shapes such as the fourth shape can be used.
As shown in the figure, a female pointed head 3 is formed by sequentially providing a truncated conical base 8A, a cylindrical portion 8B, and a conical tip 8C at the end of each strand 2A on one side toward the tip in the axial direction. It is also possible to form a female hole 4' in which the female point 3' is tightly fitted into the end face of each strand 2B on the other side. In the case of a female pointed head and a female hole having the shape shown in FIG. 1 or FIG. 4 as well as other shapes not shown, it is preferable to make the fitting surfaces of both of them a rough surface with minute irregularities. . In other words, if the fitting surfaces of both are made into a rough surface with minute irregularities, the pixel lines 2A and 2B will be more closely interlocked and joined in terms of metal structure at the fitting end of the female tip and the female hole during compression. It is something that will be done. Further, in the method of implementing the invention, the twisted conductor IA to be connected,
When the IB consists of multiple stranded wire layers, the fitting position of the female tip and the female hole may be shifted in the longitudinal direction of the conductor for each layer, and all layers should not be compressed at once. , each layer may be compressed sequentially from the inner layer to the outer layer.

According to this invention, each strand 2 on one side facing each other
The female-shaped point 3 formed at the end of A is connected to each strand 2 on the other side.
The pixel lines 2A are fitted into the female holes 4 formed in the end faces of the pixel lines 2A at the fitting portions thereof.

Since the twisted conductors IA and 1B' are crimped and connected to each other by compression means and connected to both twisted conductors IA and 1B' with the same diameter, the temperature of the conductor strands does not increase during the connection work as in the case of conventional welding connections. Therefore, the risk of burning out or deteriorating the conductor insulating layer can be reliably eliminated, and the connection work can be completed in a relatively short time without requiring much skill, and the pixel lines 2A and 2B can be connected easily. The crimp joint is
Since the female pointed head 3 is tightly fitted into the female hole 4, the sum of the male and female cross-sectional areas is equal to the cross-sectional area of the strand at any point in the fitted portion. Effects such as being able to form a conductor connection portion with the same diameter having the same tensile strength as other portions can be obtained.

[Brief explanation of drawings]

Figures 1 to 6 are explanatory diagrams showing an example of the method for connecting cable conductors with the same diameter according to the present invention in the order of operations, and Figure 4 shows the female tip and female tip to be formed at the end of the wire. It is a side view which shows another example of a hole. In the figure, IA, 1B are twisted conductors, and 2A. 2B is a wire, 6 is a female tip, 4 is a female hole, and 7 is a thin sleeve.

Claims (1)

[Claims] A female point 3 is formed at the end of each strand 2A on one side of the twisted conductors IA and IB to be connected to each other, and a female point 3 is formed at the end of each strand 2B on the other side. A female hole 4 is formed into which the part 6 is tightly fitted, and the strands 2A facing each other are formed.
, 2B, both twisted conductors 'IA, 1B't to be connected by fitting the female pointed head 6 into the female hole 4 for every 2B--after abutting coaxially, including the abutting part. A method for connecting electric cable conductors with the same diameter, which is patented by compressing both twisted conductors IA and IB in the radial direction from the entire circumference near their terminals.