JPS5996816A - Hollow circular twisted conductor connector - 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] This invention relates to improvements in hollow circular stranded conductor connections.

Conventionally, a connecting portion of a small-sized hollow circular stranded wire conductor has been constructed as shown in the vertical cross-sectional view of FIG. To explain this, Fig. 1 shows the symmetrical half of the centerline vertical cross section of the connecting part of hollow circular stranded wire conductors with respect to the centerline, and in the figure, 3A and 3B are hollow circular conductors to be connected to each other. The conductor is a stranded wire conductor, and 8C is a spiral tube fitted into a hollow portion with a circular cross section formed in the center of the conductor. (3) is an integral cylindrical steel core that is fitted into the hollow part to connect the conductors 3A and 3B, and a flange that brings the end faces of the conductors 3A and 3B into contact with the outer periphery of the central part in the longitudinal direction of the steel core 1. A portion 1' is formed, and the end surfaces of the conductors 8A and 3B to be connected are brought into contact with both sides of the flange portion 1', respectively, and the conductors 3A and 3B are respectively fitted and inserted into the outer peripheral surface of the steel core 1, and the steel core 1 is The conductor 3 is placed on the outer periphery of the conductor 3A, 3B corresponding to
The compression sleeve 2 is fitted and compressed over A and sB,
The conductors 3A and 3B were crimped and fixed to the compression sleeve 2 and the steel core 1, respectively, to form a connecting portion between the conductors 8A and 3B. In this case, the method shown in Figure 2 was adopted. In FIG. 2, the same parts as in FIG. 1 are designated by the same reference numerals, and FIG. 2 is a side view for explaining the formation of a connecting portion of a hollow circular stranded wire conductor.

To explain this, an integral cylindrical steel core l is placed in the center hollow part of one conductor 3A, and one surface of the flange l' is the conductor 3A.
Insert it so that it touches the end face of A and 1. Z sleeve 2 is mounted on conductor 3A, and the cable is bent over the center hollow part and outer periphery of conductor 3B to which the protruding end of the steel core 1 from conductor 8A and the other end of sleeve 2 are to be connected. Lift and insert the cable, and then push down the cable at the same time to insert the entire length of the protrusion from the conductor 8A of the steel core 1 into the center hollow part of the conductor flaB, and insert the conductors 3A and 3B corresponding to the insertion part of the steel core 1. A compression sleeve is inserted and compressed around the outer periphery of the conductors 3A and 3B.
The connection portion of the conductors 3A and 3B was constructed by crimping and fixing the conductors 3A and 3B to the steel core 1 inserted into the steel core 1, respectively. However, in the case of item 7, if the cable size is large, it may be difficult to lift the cable or push it downward, and it is generally not preferable to employ the above-mentioned method from the viewpoint of workability. Therefore, in order to configure the connection part of the hollow circular stranded wire conductor as shown in Fig. 3, the conductor 3A
, 3B, the steel core 1 shown in FIG.
A, 4. B, one end ν pi of each steel core 4A4B is formed with flanges 4A' and 4B', respectively, and the steel core 4A,
4B to each collar part 4A1.4. BL force: Insert into the center hollow part of each of the conductors 3A and 3B so that they contact the opposing end surfaces of the hollow circular stranded wire conductors 3A and 3B to be connected, and align the axes and widths of the conductors 3A and 3B. At least the collar plates 4, A', and 4B' are brought into contact to electrically connect, and the conductor 3A corresponds to the steel cores 4A and 4B.

A compression sleeve 2 is fitted onto the outer circumference of the conductor 3B, and the sleeve 2 is compressed and crimped to the conductors 3A and 3B.The inner circumference of the conductor 3A is attached to the outer circumference of the steel core 4, and the inner circumference of the conductor 8B is attached to the outer circumference of the conductor 8B. The conductor 3 is crimped and fixed to the outer peripheral surface of the steel core 4 and 13 respectively.
A and 3B connection parts are configured. In this case, the connecting portion of the hollow circular stranded wire conductors 3A and 313 can be formed easily, quickly and compactly even in a thick cable, but the steel cores 4A and 4B are simply in contact with each other. Therefore, it does not contribute to the tensile strength of the conductor connection part, and the tensile strength is the compression sleeve 2 and the conductor 3A, 313.
The gripping force is generated by the gripping force of the crimping surface F between the compression sleeve 2, and the gripping force depends on the tensile force of the cross-sectional area S of the central portion XX of the compression sleeve 2. is determined. Therefore, the tensile strength at the connection between the conductors 8A and 8B formed from the above configuration ζ has the drawback that the steel cores 4A and 4B do not contribute to the tensile strength and decrease, and in some cases accidents such as wire breakage may occur due to the tensile force. There is a risk that

This invention was made in view of the above, and the steel core is divided into two in the length direction, and this can be easily and quickly performed even at the connection part of a hollow circular stranded wire conductor with a large cable size, and the steel core can be used as a tensile-resistant member. It is an object of the present invention to provide a hollow circular stranded conductor connection which can be assembled to reduce the number of conductor connections.

Hereinafter, the present invention will be explained in detail with reference to the drawings showing embodiments thereof. FIGS. 41 and 5 show a steel core 21A that is divided into two parts at the longitudinal center portion of the hollow circular stranded wire conductor to be connected, which is inserted opposite to the end of the central hollow part;
21B, and FIG. 4 (,) is a steel core 21A.
It shows the symmetrical half of the central longitudinal section of the central longitudinal section with respect to the central axis, and
Figure (b) shows a side view of a symmetrical half of the steel core 21A with respect to the central axis. FIG. 5(a) shows a symmetrical half of the central vertical section of the steel core 2133 with respect to the central axis, and FIG. 5(b) shows a side view of the symmetrical half of the steel core 21B with respect to the central axis. Fourth
In the figure, the steel core 21A is formed into a cylindrical shape, and a male thread Sm is spirally carved on the outer periphery of one end portion.
A flange 21A' is formed on the outer periphery of the engraved end, and the flange 21A'
1A' has a pin insertion hole A parallel to the central axis of the steel core 21A.
A male end portion 21m of the steel core 21A is formed by the carved male thread Sm and the flange portion 21A'. In FIG. 5, the steel core 21B is formed into a cylindrical shape with the same dimensions as the steel core 21A, and one end thereof is connected to the steel core 2113.
It is formed into an enlarged diameter cylindrical body 21B' having a common central axis, and a female thread S4 is threaded over its entire length on its inner circumferential surface to be screwed into a male thread Sm formed in one end of the steel core 21A in a spiral shape. A bottle insertion hole B is provided on the outer peripheral surface of the enlarged diameter cylindrical body 2113' and communicates with the female thread Sf.
1B, and is perforated at right angles to the central axis of the diameter-enlarging cylindrical body 21
B' forms the female end 214 of the steel core 21B.

Diameter of flange 21A' at male end 21m and female end 21
The diameter of the enlarged diameter portion cylindrical body 21B' at B is the same size, and is formed to be smaller than the outer diameter position of the conductor to be connected, and the thread length Ll of the male end 21m and the female end It is formed to have the same length as the thread length L2 of 214. FIG. 6 shows a symmetrical half of the longitudinal section of the cylindrical compression sleeve 22, which is fitted and compressed over the outer periphery of each conductor to be connected when forming a conductor connection part, and is symmetrical with respect to the central axis. The length is the male end 21 of the steel core 21A.
m and the female end 21f of the steel core 2113 are integrally formed by a predetermined screw connection, and the length is approximately equal to the length of the steel core, and the length is arranged corresponding to the position of the integral steel core. It is something that will be done.

Therefore, the small hole C previously drilled in the female end 21f moves when the male end 21m and the female end 21f are engaged in a predetermined screw connection to integrally form the steel cores 2LA and 21B. Corresponding to the position, small holes C are drilled in the compression sleeve disposed corresponding to the integral steel core, and small holes B and C are filled with pins 24.
(See Fig. 7) is a symmetrical half with respect to the center axis of the longitudinal cross-sectional schematic diagram.In Fig. 7, 28A, 23
B is a hollow circular stranded wire conductor to be connected. At one end of the hollow part formed in the center of the conductor 28A,
The steel core 21A having the male end 21m shown in the figure is inserted into the steel core so that the back surface of the male end 21m on the side where the male thread Sm of the flange 21A' is carved comes into contact with the end face portion of the conductor 23A. A small through hole A is made in contact with the outer peripheral surface of the conductor 21A and the inner peripheral surface of the conductor 28A, and is bored in the flange 21A'.
As shown in FIG. 8, the pin 25 is inserted into the steel core 2 to make the tip protrude, and the protruding portion is inserted into the gap between the wires of the conductor 23A.
The conductor 23A is fixed to the conductor 23A in a hollow part formed in the center of one conductor 23B.
A steel core 21B having a female end 214 shown in FIG.
The end surface of the conductor 23B is inserted into the stepped part of the conductor 28A, so that the outer circumferential surface of the steel core 21B and the inner circumferential surface of the conductor 23B are brought into contact with each other, and the compression sleeve 22 shown in FIG.
23B, and a small hole C and a female end 21f drilled at a preset position of the compression sleeve 22.
Loosely fit the pin/24 into the small hole B in the male end 21m.
and the female end 2 ] 4 and rotate the female end 21f integrally with the compression sleeve 22, the female end 21f will spiral over the male end 21m and the flange at the male end 21m. 2! IA
The front end surface of the female end 21f is in close contact with the surface on the side where the male thread Sm is carved, and at the same time the front end surface of the male end 21m is also in close contact with the end surface of the female end 2]4 where the female thread is carved, and the steel core 21A. 2113
Furthermore, the compression sleeve 22 also moves the female end 21f over the male end 21m in response to the movement of the female end 21f above the male end 21m.
The steel core moves integrally with the conductors 23A and 23B and moves to a position corresponding to the preset position of the steel core configured as a single piece. In this state, the sleeve 22
are compressed to compress the conductors 23A and 28B, respectively, to the inner peripheral surface of the compression sleeve 22 and the steel core 21A, which is integrally connected to the inner peripheral surface of the compression sleeve 22.
A connecting portion of the hollow circular stranded wire conductor is constructed by crimping and fixing it to the outer peripheral surface of 21B.

Since this invention has the above configuration, the steel core is divided into two in the longitudinal direction and inserted into the hollow portion formed at the center of the hollow circular stranded wire conductor to be connected, and the opposite end of the steel core is The male and female ends formed on the sections are easily and quickly joined together by threading, and act as a tension-bearing member for the respective conductors to be connected, and the compression sleeves Needless to say, since the sleeve is disposed astride the respective conductors, the sleeve also acts as a tensile strength member for each conductor. Therefore, if the compression sleeve is compressed and the outer periphery of the conductor to be connected is crimped and fixed to the inner peripheral surface of the compression sleeve and the outer peripheral surface of the integrally formed steel core, the tensile strength of the connection part will be reduced to the tensile strength. The more parts are formed, the better.

Since the present invention has the configuration and operation described above, according to the present invention, the steel core divided into two parts in the operator's direction in the hollow circular stranded wire conductor connection part can be easily and quickly integrally joined.
This can be configured as a tensile strength member at the conductor connection part, and the tensile strength at the connection part can be easily and quickly increased.The dimensions of the steel core and compression sleeve can be set to have the desired tensile strength, and the conductor can be connected to the conductor. It is suitable for application as a conductor connection part 2 for a cable in a connection part.

[Brief explanation of drawings]

Figure 1 is a schematic diagram of the symmetrical half of the center longitudinal cross-section of a conventional joint of a small-sized hollow circular stranded wire conductor with respect to the central axis line, and Figure 2 is a conventional joint formation of a large-sized hollow circular stranded wire conductor. Fig. 3 is a side view for explaining the means, and Fig. 3 is a symmetrical half-sectional view in longitudinal cross-section of the main part of a conventional hollow circular stranded wire conductor connection section constructed using a two-part steel core, and Figs. FIG. 4 is a schematic diagram showing a longitudinal cross-section of one of the two-part steel core constituting the hollow circular stranded wire conductor connection section and its side surface, and FIG. FIG. 6 is a schematic diagram showing a vertical cross section of the other steel core and its side surface similar to that of FIG. FIG. 7 is a symmetrical half view of a vertical section of a hollow circular stranded wire conductor connection section for explaining the configuration of the connection section with respect to the center axis of the conductor, and FIG. It is a longitudinal section showing the bottle inserted state. 2LA, 21B... Steel core, 21A'... Flange, 21
B'... Expanded diameter cylindrical body part, 21m... Male end part, 214
... Female end, 22 ... Compression sleeve, 23A, 2
8B...Hollow circular straight wire conductor, 24.25...Pin, Stn...Male thread, Sf...Female thread, A, B,
C...small hole. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] (1) A male end formed by carving a male thread on the outer periphery of one steel core end, forming a flange on the outer periphery of the engraved end, and drilling a small through hole in the flange in parallel to the central axis. a steel core with a diameter-enlarging cylindrical body part at the other end of the steel core; a male thread that is screwed into the male thread in the male end part is carved on the inner circumferential surface of the cylindrical body part; A steel core having a female end formed by drilling a small hole perpendicular to the axis of the steel core on the outer periphery of the cylindrical body, and a rear surface portion of the flange at the male end of one of the conductors to be connected to the steel core. A pin is inserted into a hollow part with a circular cross section formed at the center of the conductor so that it comes into contact with the end face part and the outer periphery of the steel core contacts the inner periphery of the conductor, and a pin is inserted into a small hole made in the collar part. Then, the tip part is driven into the gap between the wires constituting the conductor, and the steel core is fixed so as not to rotate with respect to the conductor, and the tip part is driven into the wall surface of the enlarged diameter stepped part of the steel core having the female end part. The conductor is fitted into a hollow section with a circular cross section formed at the center of the conductor so that the other end surface of the conductor abuts and the outer periphery of the steel core contacts the inner periphery of the conductor. A compression sleeve is inserted over the conductor to be connected by inserting a common pin into the small hole of the compression sleeve and the small hole of the compression sleeve, which has a small hole drilled at a preset position relative to the small hole. the male end and the female end are screwed together, the female end is rotated together with the compression sleeve through the common pin, the female end is screwed onto the male end, and the steel core is After integrating the
A hollow circular stranded wire conductor connection section characterized in that the outer circumference and inner circumference of the conductor to be connected by compressing the compression sleeve are respectively crimped to the compression sleeve and the integrated steel core. .