JP2006296175A - Anchoring device for communication lines - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate the need for additional stringing of a cable and facilitate continuously use of an anchoring device by merely replacing one part of an anchoring part of a supporting wire in a place where a pole is relocated or eliminated for the reason of relocating work, because of interference or the like. <P>SOLUTION: An anchoring fitting 2, 2 is provided at both ends of a rigid tube 1 by rigidly joining so that end faces are abutted against each other, and they are concentric with the rigid tube 1. A through hole 22 in each anchoring fitting 2, 2 is provided with an anchoring member (lug 24) for a support wire c inserted into the through hole 22 from a ferrule 23. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a communication line retaining device used for retaining a support line when an outdoor communication line such as a telephone line is pulled in.

In order to draw the outdoor communication line branched from the main line, a retaining bracket attached to a utility pole or the like via a U-shaped ring is used, and the retaining bracket cuts the support line (messenger wire) of the outdoor communication line, 2. Description of the Related Art Conventionally, a structure in which a base (pipe) into which a support wire can be inserted and a retraction preventing claw (claw for retaining) that engages with the support wire under a spring action is provided. On the other hand, the support line vertically attached to the outdoor communication line is covered, and when this support line is inserted into the metal fitting body of the retaining metal fitting from the base, the covered portion of the support wire meshes with the claws in the metal fitting main body. The system is designed to be retained. The pawl is formed in the apparent center hole of the joined body, which is slidably provided so as to be inscribed in the right circular truncated conical through hole of the metal fitting body.
Design Registration No. 708394

  The above conventional fastening metal fittings are mounted on both sides of the utility pole, etc., for example, when a problem of relocation of the utility pole occurs, it is necessary to switch to a new cable by re-tensioning because the support line is cut at the retaining part is there. There is a problem that the rewiring work may cause trouble for users of the communication line, and there is a problem that a cable that can withstand the use that has been drawn in is replaced and it becomes very uneconomical. In addition, when the support line engaged with the claws and the retaining line is pulled by some external force, only the support line is removed from the clasp metal while leaving the covering meshed with the pawls. Inevitably, there will be a problem that will be released, and in combination with the above problem, an improvement measure has been demanded.

  The present invention solves such a problem, and its purpose is to simply replace a part of the support wire with respect to a location where the utility pole moves or disappears due to a troubled transfer work such as a utility pole. It is an object of the present invention to provide a novel communication line retaining device that eliminates the need for re-stretching and allows the use of the retaining bracket to be continued. Another object is to prevent the passage of the coating at the base portion when the support wire is inserted into the retaining device, and the bare wire portion of the support wire from which the coating has been removed in advance is directly attached to the support wire retaining claw. It is an object of the present invention to provide a communication line retaining device that can be bitten so that the retaining of a support line is not unreasonably released.

  In order to achieve the above-mentioned object, the retaining device for a communication line, which is a feature of the present invention, has a retaining metal fitting at both ends of the rigid tube along the same center line as the end surfaces of the rigid tube. It is provided in a rigid connection, and the holding hole holding member inserted into the through hole from the base is provided in the through hole of each holding metal fitting. According to this configuration, the retaining device is usually used with the middle part of the rigid pipe attached to the utility pole.However, depending on the situation of the troubled relocation work such as the utility pole, By using the retaining device attached to the utility pole at the destination, the retaining device removed from the removed utility pole side can be used continuously.

  On the peripheral surface of the rigid tube, there are operation long holes for supporting wires that have been passed through the rigid tube from the clasp metal fitting side. It is preferable to be perforated. Further, the support line retaining member is a joined body formed by opposing two parts that are inscribed in a right circular truncated conical hole that occupies at least approximately the front half of the through hole and can be slid by being pressed by the return spring. A pawl provided in the apparent center hole can be used, and the support wire is engaged with the pawl and is retained.

  Furthermore, the rigid pipe and the holding fitting are rigidly connected by inserting connecting fittings having hooks at both ends into the end face butting portions of both members, and facing the rigid pipe and the holding fitting. This is done by caulking this part to the connecting bracket. Of course, other retaining members can be used as long as they do not depart from the object of the present invention. On the other hand, in order to prevent the support wire from passing through the base portion and to bite the bare wire portion of the support wire, it is only necessary to provide the base with a reduced diameter portion that can receive the cover.

  When holding the support wire, it is configured to hold both ends of the support wire cut to the holding metal fittings rigidly connected to the both ends of the rigid tube, so that the utility pole moves or disappears due to the troubled transfer work of the utility pole etc. It is possible to eliminate the uneconomical re-cable of the cable just by replacing the support line on the moving side for the location, and at the same time, one support line can be used for trouble-removal work while being retained by the retaining device. effective. Further, if the bare wire portion of the support wire is directly meshed with the catch of the fastening metal, the support wire is kept in a stable state and the support wire can be prevented from being pulled out.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated with reference to drawings. 1 to 4, 1 is a metal rigid tube (length is about 190 to 520 mm), 2 is a clasp (length is about 55 mm), and 3 is clasps 2 and 2 at both ends of the rigid tube 1. Each of them is a connection fitting (length is about 30 mm) that is rigidly connected. The connecting fitting 3 is a cylindrical member provided with hooks 31 at both ends, and each half of the connecting fitting 3 is inserted into the end face butting portion of the rigid tube 1 and the clasp fitting 2. The rigid tube 1 and the clasp metal 2 facing each other are caulked to the coupling metal 3, so that the rigid tube 1 and the clasps 2 and 2 have a rigid connection in a state where the end faces are abutted along the same center line. Fulfilled. Reference numerals 11 and 21 denote caulking portions.

  This rigid connection is preferable in that it is caulked in a hexagonal shape (see FIG. 3) from the viewpoint of strengthening the connection (the number of crimping portions is six), and in some cases, a method by screw connection can also be adopted. The collar 31 is pressure-bonded to the shoulder generated by caulking, and further secures the coupling state of the rigid tube 1, the clasp metal 2 and the coupling metal 3. In addition, at both ends on the peripheral surface of the rigid tube 1, as described later, an operation unit is formed that forms a bent portion in a support line that has been passed through the rigid tube 1 from both the clasps 2 and 2 side. A pair of operating long holes 12 are formed so as to face each other.

  In addition, the retaining metal fitting 2 is provided with a through-hole 22 having a right truncated cone-shaped hole 22a at least approximately at the front half, and the through-hole 22 slides on the tip of the retaining metal fitting 2. There is provided a pawl 24 which is a retaining member for the support line c inserted from a cap (a length of about 20 mm) 23 which can be mounted. The pawl 24 is provided over almost the entire area of the apparent central hole 25a of the joined body 25, which can slide in contact with the right circular truncated conical hole 22a. The diameter of the central hole 25a is the joined body 25. Thus, the pawl 24 can be bitten by a covered wire or a bare wire.

  The joined body 25 is formed by dividing the shape corresponding to the right circular truncated conical hole 22a into two pieces and facing each other, and is always subjected to the pressing action of the return spring 26 toward the base 23 side. The return spring 26 is provided between the flange 31 of the connection fitting 3 and the contact fitting 27 that is in contact with the rear side of the joined body 25. The contact metal fitting 27 functions as a setting member for correctly assembling the divided joined body 25 into two parts. In addition, short tube portions 31 a and 27 a for positioning the return spring 26 are provided projectingly on one of the collars 31 and the contact fitting 27. Note that the mouth edge 23a on the inner end side of the base 23 is slightly curved outward so as to be joined to the inner surface of the right truncated cone hole.

  According to the present invention having the above-described configuration, the fastening device (all components are metal) is attached to the utility pole or the like at the portion of the rigid tube 1, and then the cut support wire c is attached to the fastening bracket 2 to the base 23. , 23, the support line c is caught by the pawl 24 provided in the center hole 25a and is retained, and the support line c cannot be pulled out in this state. In order to release the holding and pull out the support line c, the base 23 is pressed against the return spring 26, the joined body 25 is retracted, and the center hole 25a is widened. The support line c inserted into the rigid tube 1 can be bent with a pliers or the like at the portion of the operation long hole 12 as needed, and can be placed on the portion of the rigid tube 1.

  In the case of work to relocate the utility poles, etc., attach the other retention device to the utility pole that is set up at the relocation destination, and attach the support line that is secured to the retention bracket 2 on the front side of the retention device on the utility pole side to be removed. The support 23 is pulled out by being released from the pawl by the pressing operation, and the support wire is fastened to the fastening metal fitting 2 on the front side of the fastening device previously attached to the power pole of the transfer destination. Keep one end of the connecting line with a length that matches the distance of the utility pole. Next, if the other end of the connecting line is fastened to the retaining bracket 2 of the retaining device on the side of the utility pole to be removed, it is not necessary to replace the cable, and the retaining device removed from the removed utility pole is continued as it is. Can be used.

  Next, the base 23 that can prevent the passage of the coating will be described. As shown in FIG. 5, a reduced diameter portion 231 having a short cylindrical shape is provided near the inner end of the mouthpiece 23, and the reduced diameter portion 231 has a diameter that can prevent the support portion from passing through the bottom portion 232. A window hole 233 is formed. The reduced diameter portion 231 is provided by being press-fitted into the base 23, and in the illustrated case, it is formed separately from the base 23 by pressing, but this can also be formed integrally with the base 23 by die casting. Is possible. In the figure, c is a coating, and w is a bare portion of the support wire.

  It is a top view which abbreviate | omits and shows a part of embodiment of this invention.   It is the sectional view on the AA line of FIG.   FIG. 3 is an end view taken along line BB in FIG. 1.   It is a principal part enlarged view of FIG.   It is an expanded sectional view which shows a deformation | transformation of the nozzle | cap | die shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 is a rigid pipe 2 is a clamp metal fitting 3 is a connection metal fitting 11, 11 is a crimping part 12 is a long hole for operation 22 is a through hole 22a is a right circular truncated cone hole 23 is a base 24 is a claw 25 is a joined body 25a is a central hole 26 The return spring 27 is a contact fitting 31 is a collar

Claims (4)

  At both ends of the rigid tube, fastening metal fittings are respectively rigidly connected along the same center line as the rigid tubes so as to abut each other, and each through-hole of each fastening metal fitting has a through hole. A retaining device for a communication line, characterized in that a retaining member for a support line inserted from a base of the retaining bracket is provided.   The retaining member is formed in the apparent central hole of the joined body facing the split member, which is inscribed in the right circular truncated conical hole 22a occupying at least approximately the front half of the through hole and is slid by being pressed by the return spring. The retaining device for a communication line according to claim 1, wherein the retaining device is a pawl provided.   The communication wire retaining device according to claim 1 or 2, wherein a long hole for operation of a support line passed through the rigid tube from the retaining metal side is formed on a peripheral surface of the rigid tube.   Insert the connecting fittings with hooks at both ends into the end face butt part of the rigid tube and the clasp, and the rigid pipe and the clasp fitting part facing between the two ribs are clamped on the connecting fitting The communication line retaining device according to claim 1, 2, or 3.

Images