JP2001251722A - Wire connection method and connection device - Google Patents

Abstract

(57) [Problem] To provide a line connection method and a line connection device capable of connecting a line reliably and strongly while minimizing a line connection part. SOLUTION: The ends of each of the steel wires 11a, 11b from which the coating of the steel wires 1a, 1b has been removed are inserted into a cap 3, and penetrate through a through hole 7a formed in a gripping blade 7 in the cap 3. Then, the ends of the steel wires 11a and 11b are
Projecting to the vicinity of the opening of the screw 3a of each cap 3.
Are screwed into the screw portions 5b of the connection body 5, respectively, and the ends of the steel wires 11a, 11b are fixed to the fixing guides 5a of the connection body 5.
Between the two steel wires 11 by pressing the gripping blade 7 with the fixed guide 5a, and by using the file of the gripping blade 7.
a and 11b are fixedly connected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a device for connecting two wires, such as steel wires, fixedly at their ends, for example, provided imaginarily between utility poles. The present invention relates to a connection method and a connection device for connecting a steel wire installed in parallel with a communication line or the like to support the communication line or the like in the middle.

[0002]

2. Description of the Related Art When a communication line is used overhead, since the material of the communication line is copper, the weight of the communication line cannot be supported by the communication line itself in terms of strength. Therefore, as a method of supporting the weight of the communication line, a steel wire is installed in parallel with the communication line made of copper wire, and the copper wire is supported by the steel wire installed in parallel. I have. In other words, a method is adopted in which a steel wire is installed overhead in parallel with the communication line so that the tensile force generated by the weight of the communication line is supported by the steel wire and the electric signal flows through the copper communication line.

In the case where such a steel wire is connected in a straight line on the way, that is, when two steel wires are connected in a straight line at the ends, conventionally, the steel wire is inserted into a sleeve or a pipe, Then, by crimping or twisting the sleeve or pipe, the connection is made using the frictional force of the steel wire and the sleeve or pipe.

[0004]

As described above, the conventional method of connecting steel wires using a sleeve, a pipe, or the like requires the steel wires to be connected to each other in order to secure a contact frictional force. It is necessary to overlap, the connection part becomes thick,
When used overhead, there is a problem that the steel wire and the communication line are shaken or vibrated by the wind, and the communication line is likely to be disconnected.

[0005] Further, after covering the sleeve or pipe with the steel wire, to crimp or twist the sleeve or pipe,
The strength of the steel wire connection differs depending on the force applied to the sleeve or pipe and the number of twists, and the strength of the steel wire connection also differs depending on the tool used for caulking or twisting the sleeve or pipe. However, there is a problem that the significant difference is large.

Further, there is a problem that a special tool must be prepared in order to obtain a stable connection strength which is not affected by the skill of the operator depending on the method.

[0007] In addition, there is a problem that it is not preferable from the aesthetic point of view that thickening the connecting portion of the steel wires because the steel wires are overlapped with each other.

[0008] The present invention has been made in view of the above,
It is an object of the present invention to provide a wire connection method and a wire connection device that can securely and strongly connect a wire while minimizing a wire connection portion.

[0009]

In order to achieve the above object, the present invention according to claim 1 is a method of connecting two wires in a fixed manner at their ends. Insert the part from the narrow end of the cap into the through hole consisting of the file formed in the gripper blade movably provided in the tapered cap, and penetrate the cap. Of the other end of the cap, screwed in the screw formed in each opening of each cap into the screw formed in both ends of the connection body, respectively, of each line projecting to the vicinity of the opening of the cap The end is inserted between fixed guides protruding from both side surfaces of the connection body, and the gripper is pushed toward one end of the cap with the fixed guide, whereby two lines are formed by the file of the gripper. Fixed connection It is the gist of.

According to the first aspect of the present invention, the end of each wire is inserted into a cap, and the end of each wire is penetrated through a through hole formed in a gripping blade in the cap. The cap is screwed into the threaded part of the connection body, and the end of each wire is inserted between the fixed guides of the connection body. 2 depending on the file of the blade
Since the wires are fixedly connected, the connecting portions of the wires do not become thick as in the conventional case, which is not only aesthetically pleasing, but also does not shake or vibrate due to the wind, thereby eliminating disconnection. In addition, since the connection is made simply by inserting the wire, there is no significant difference between operators,
Work can be done quickly.

The present invention described in claim 2 is the same as the claim 1.
In the invention described in the above, the gripping blade is constituted by a plurality of small gripping blades divided so as to be able to tighten a wire when pushed toward one end side of the cap by a fixing guide of the connection body, and The gist is that the file is formed so as to bite into the line when the two drawn lines are pulled in a direction of separating the two lines from each other.

According to the second aspect of the present invention, the gripping blade is divided into a plurality of small gripping blades so as to tighten the wire when pushed into the cap, and the wire is pulled in a direction to separate the wire from each other. In the case, the file is formed so that it cuts into the line, so that the line does not fall out,
Connection can be made securely.

Further, the present invention according to claim 3 is a line connecting device for fixedly connecting two lines at end portions thereof,
A pair of tapered caps, each end of which is inserted from one end side, and a through hole which is provided movably in each cap, and which is provided with a file through which the end of the line inserted in the cap penetrates. Formed at both ends, and a threaded portion into which a threaded portion formed at the opening at the other end of each cap is screwed is formed at both ends. A fixed guide is formed on both side surfaces into which the ends of the respective wires protruding through the hole and protruding to the vicinity of the opening of the cap are formed on both side surfaces, and a connection body for pushing the gripping blade toward one end of the cap with the fixed guide. The screw portion of each cap is screwed into the screw portion of the connection main body, and the gripping blade is pushed toward one end of the cap by a fixing guide of the connection main body. And summarized in that the connecting line fixedly.

According to the third aspect of the present invention, the end of each wire is inserted into the cap, and the end of each wire is penetrated through the through hole formed in the gripping blade in the cap. The cap is screwed into the threaded part of the connection body, and the end of each wire is inserted between the fixed guides of the connection body. 2 depending on the file of the blade
Since the wires are fixedly connected, the connecting portions of the wires do not become thick as in the conventional case, which is not only aesthetically pleasing, but also does not shake or vibrate due to the wind, thereby eliminating disconnection. In addition, since the connection is made simply by inserting the wire, there is no significant difference between operators,
Work can be done quickly.

According to a fourth aspect of the present invention, when the gripping blade is pushed toward one end of the cap by the fixing guide of the connection body, the wire can be tightened. The gist is that it is composed of a plurality of divided small gripping blades, and that the file is formed so that the file is cut into the line when the two connected lines are pulled away from each other. I do.

According to the fourth aspect of the present invention, the gripping blade is divided into a plurality of small gripping blades so as to tighten the wire when pushed into the cap, and the wire is pulled in a direction to separate the wire from each other. In the case, the file is formed so that it cuts into the line, so that the line does not fall out,
Connection can be made securely.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. 1A and 1B are perspective views showing the appearance of a wire connection device according to an embodiment of the present invention. The wire connection device shown in the figure is for connecting a steel wire to be erected in parallel with a communication line as an example, but the connection device of the present invention is not limited to the connection of a steel wire, and various wires can be connected. It can also be used for connection. In addition, FIG.
FIG. 1 shows a state before connecting two steel wires 1a and 1b, and FIG.
(B) has shown the state which connected two steel wires 1a and 1b with the connection device of this embodiment.

The steel wires 1a and 1b are covered with a coating. When connecting, the coating is removed.
The stripped portions of the steel wires 1a and 1b are inserted into the tapered cap 3 from one of its narrow ends as shown in FIG. In FIG. 1A, a steel wire 11b that has been removed from the other end through the cap 3 is shown. In the following description, the steel wires 1a and 1b from which the coating has been removed will be described as steel wires 11a and 11b, respectively.

As shown in FIG. 1A, after the stripped steel wires 11a and 11b are respectively inserted into the cap 3, the cap 3 is screwed into the connection main body 5, and the cap 3 is screwed into the connection body 5 as shown in FIG. , So that the steel wires 1a,
1b is surely connected. More specifically, a screw portion is formed inside the opening at the other end of the cap 3, and the screw portion is screwed into a screw portion formed on the outer peripheral portion at both ends of the connection body 5. It is something that has become.

FIG. 2 is a sectional view showing the internal structure of the connection device shown in FIG. 1 in detail. As shown in FIG. 2, a gripping blade 7 is movably provided inside the cap 3. A through hole 7a is formed in the gripping blade 7, and the steel wires 11a and 11b are inserted into the through hole 7a, and the ends of the steel wires 11a and 11b protrude from the through hole 7a. A file is formed inside the through hole 7a of the gripping blade 7, and each steel wire 1 inserted into the through hole 7a is formed.
The files 1a and 11b are not easily pulled out by the file. More specifically, when the steel wire 11a, 11b is pulled in a direction opposite to the direction in which the steel wire 11a, 11b is inserted, the file of the through hole 7a is drawn in the direction in which the tensile force acts. The steel wires 11a and 11b are formed so as to bite into
Are not easily pulled out when inserted into the through hole 7a.

As described above, each of the steel wires 11a, 11b is formed such that the end of each of the steel wires 11a, 11b projects from the through hole 7a.
After inserting 1b into the through hole 7a of the gripping blade 7 in the cap 3, the two caps 3 are screwed into the connection body 5 for connection. In the connection by the connection body 5,
First, the ends of the steel wires 11a and 11b protruding from the through holes 7a are inserted between the fixed guides 5a protruding from both sides of the connection body 5, whereby the ends of the steel wires 11a and 11b are connected. Abut on each side. In this way, by bringing the ends of the steel wires 11a and 11b into contact with the side portions of the connection main body 5, even if the steel wires 111a and 11b are further pushed in, the opposite mating steel wires are no more pushed. They do not move.

After the ends of the steel wires 11a and 11b are inserted between the fixed guides 5a and brought into contact with the side portions of the connection main body 5 as described above, or while performing the insertion and contact operations, When the screw portion 3a formed inside the open portion at the other end of the cap 3 is screwed into the screw portion 5b formed at the outer peripheral portion at both ends of the connection main body 5, the gripping blade 7 becomes thin with the fixed guide 5a. The steel wires 1a and 1b are fixedly and firmly connected by the file of the through hole 7a of the gripping blade 7 by being pushed toward one end side.

The gripping blade 7 is actually configured by being divided into a plurality of small gripping blades. By combining the plurality of divided small gripping blades, the gripping blade 7 becomes As shown in FIG. 2, a through-hole 7a having a file inside is formed. Then, as described above, the gripping blade 7 configured so as to be divided is pushed toward the narrow end of the cap 3 by the fixing guide 5a of the connection main body 5 as described above. The gripping blades 7 are pressed into close contact with each other,
The diameter of the through hole 7a is reduced so as to strongly grip the steel wires 11a and 11b.
a and 1b are connected more firmly.

Using the connection device of the above embodiment, 2
The results of connecting the steel wires and performing a tensile test on the connected steel wires will be described. Although a steel wire having a breaking force of about 1660 N was used in this tensile test, the result of the tensile test of the steel wire connected by the connecting device of the present embodiment was about 1660 N.
N, which was equivalent to the breaking force of the steel wire itself. Also,
As a matter of course, there is no slip of the steel wire in the steel wire portion bitten by the file after the break, and furthermore, the breaking position is not in the connection device or near the file, but in the steel wire portion. The gripping force was found to be sufficient.

[0025]

As described above, according to the present invention,
Insert the end of each wire into the cap, penetrate through the through-hole formed in the gripper blade in the cap, screw the thread of each cap into the thread of the connection body, and connect the end of each wire Insert the wire into the fixed guide of the main body, and press the gripping blade with the fixed guide to securely connect the wire with the file of the gripping blade. Is also favorable,
It is not shaken or vibrated by the wind, which eliminates disconnection. In addition, since the connection is made by simply removing the wire coating and inserting it, there is no significant difference between operators and work can be done quickly. For example, as a countermeasure for early restoration of a communication line disconnection accident caused by hooking of a communication line by a construction vehicle, falling snow from a roof, etc., the connection time can be greatly reduced by changing the connection from a disconnected portion. Further, by changing the diameter of the cap or the gripping blade into which the wire is inserted, the wire can be used to connect not only a steel wire but also any wire under tension.

Further, according to the present invention, the gripping blade is divided into a plurality of small gripping blades so as to tighten the line when pushed into the cap, and a file is formed when the line is pulled in a direction to separate the line from each other. Is formed so as to bite into the wire, so that the wire can be securely connected without falling off.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of a wire connection device according to an embodiment of the present invention.

FIG. 2 is a sectional view showing an internal structure of the connection device shown in FIG. 1 in detail.

[Explanation of symbols]

 1a, 1b Steel wire 11a, 11b Steel wire with coating removed 3 Cap 3a Screw part of cap 5 Connection body 5a Fixing guide 5b Screw part of connection body 7 Grab blade 7a Filed through hole

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Koji Arakawa Inventor F-term (reference) 5G355 AA10 BA11 in Nippon Telegraph and Telephone Corporation 3-9-1-2 Nishishinjuku, Shinjuku-ku, Tokyo

Claims (4)

[Claims] 1. A method for connecting two wires, wherein the two wires are fixedly connected at their ends, wherein each wire is formed on a gripping blade movably provided in a tapered cap. Insert the cap from the narrow end of the cap into the through-hole, and penetrate the cap.Protrude the end of the wire from the gripping blade to the vicinity of the opening at the other end of the cap. Screw the set screw part into the screw part formed at both ends of the connection body, and insert the end of each wire protruding near the opening of the cap between the fixed guides protruding from both sides of the connection body, By pushing the gripping blade toward one end of the cap with the fixed guide, 2
A method for connecting lines, wherein the lines are fixedly connected. 2. The gripping blade comprises a plurality of small gripping blades divided so as to be able to tighten a wire when the gripping blade is pushed toward one end of the cap by a fixed guide of the connecting body. 2. The wire connection method according to claim 1, wherein the file is formed so as to cut into the wire when the two wires are pulled in a direction to separate the wires from each other. 3. A wire connecting device for fixedly connecting two wires at end portions thereof, comprising: a pair of tapered caps into which the ends of each wire are inserted from one end; A gripping blade movably provided in the cap and having a through hole formed of a file through which an end of the wire inserted into the cap is formed, and a screw formed in an opening at the other end of each cap. A threaded portion into which a portion is screwed is formed at both ends, is inserted from one narrow end of the cap, and a fixed guide into which an end of each line protruding through the through hole of the file and protruding near the opening of the cap is inserted. Are formed on both side surfaces, and have a connection body for pushing the gripping blade toward one end side of the cap with the fixing guide. A screw portion of each cap is screwed into a screw portion of the connection body, and the fixing guide of the connection body is used. The grip blade Line connection apparatus characterized by fixedly connecting the two lines by serrated of the gripping blades by pushing toward the one end side of the cap. 4. The gripping blade comprises a plurality of small gripping blades divided so as to be able to tighten a wire when the gripping blade is pushed toward one end of the cap by a fixed guide of the connection body. 4. The line connecting device according to claim 3, wherein the file is formed such that the file cuts into the line when the two drawn lines are pulled in a direction in which the two lines are separated from each other.