JPH0247564Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention allows the end of a pre-installed ground wire to be easily disposed of in order to guide the ground wire to a concrete utility pole. This invention relates to a ground lead wire fastener that is detachably clamped and moored to a ground wire outlet.

[Conventional technology]

Hitherto, as this type of ground lead wire stopper, for example, those described in Japanese Utility Model Publication No. 53-52633 or Japanese Utility Model Publication No. 58-54818 have been known, but the former is integrally provided on the back surface of the upper plate. The ground lead wire is passed through the straight pipe section, and in the latter case, a slit communicating with the top plate is provided in the vertical tube integrally provided in the upper plate section, similar to the straight pipe section described above. was provided, and the ground lead wire was passed through this vertical tube.

In addition, in the "earth terminal for concrete utility pole" disclosed in Japanese Utility Model Publication No. 51-50638, two wires, one for the ground wire and the other for the lead-in, are fixed by screwing them into the spiral strips of the ground wire fixing body formed in the terminal box. That's what I was doing.

[Problem that the invention attempts to solve]

Both of the former two conventional methods described above require work to insert the ground lead wire through the straight pipe section or vertical tube, which is extremely time-consuming and has poor workability. . Furthermore, in the latter case, the bent piece provided across the pair of leg side walls protruding from the back of the upper plate not only obstructs the insertion of the ground lead wire into the vertical tube, but also has a shape that The drawback is that it becomes complicated and increases production costs. Furthermore, the device according to the above-mentioned Utility Model Publication No. 51-50638 cannot be used for a single ground wire as in the present invention because it fixes two ground wires, upper and lower, due to its structure. It was a time-consuming process as it required a lot of work.

[Means for solving problems]

The width of both ends of the flanges provided on the left and right sides of the upper plate part of the earth lead-out wire stopper is formed to be slightly longer than the diameter of the opening of the ground wire outlet with which both ends of the flanges abut, A concave groove having a U-shaped cross section is provided in the center parallel to the leg side wall and integrally formed,
Furthermore, a plurality of ribs are arranged in a row on each outer surface of the leg side wall, and when fixing the ground lead-out wire stopper to the ground wire outlet, the elastic force generated by the U-shaped groove is utilized. It is constructed so that it fits into the outlet of the ground wire.

[Effect]

By wrapping and fixing the ground lead wire in a groove provided in the upper plate part so as to go around the upper plate part, the wire can be installed very easily and with good workability.

In addition, when fitting the ground wire stopper to the ground wire outlet, the width of both ends of the flanges provided on both the left and right ends of the upper plate should be larger than the diameter of the opening of the ground wire outlet where both ends of the flanges come into contact. Since both flanges are formed to be slightly elongated, both flanges are pressed toward the center by the outer edge of the opening of the outlet, and the grooves are pressed from both flange sides to generate a resilient force.
At the same time, due to the warping of the upper plate, the side walls of both legs elastically rebound outward and come into pressure contact with the inner wall of the outlet.
Furthermore, the ribs provided on the outer surface allow it to be firmly moored to the inner wall of the outlet. Therefore, the ground wire can be securely fixed to the outlet.

〔Example〕

In the figure, 1 is a concrete utility pole.
Through holes 3, 3' are formed in the upper and lower parts of the utility pole 1 by embedding ground wire outlet ports 2 formed in an oval cylindrical shape as shown in FIG. 2 when the utility pole is manufactured. Reference numeral 4 denotes a ground lead wire provided within the utility pole 1.

Reference numeral 5 denotes a stopper for a ground lead-out line made of an elastic material such as synthetic resin, which is removably fixed to the outlet 2, and the stopper 5 has flange parts 7, 7, the outlet 2
The leg side walls 8, 8 to be clamped are provided protrudingly to form a substantially U-shape, and the leg side walls 8, 8 are provided at approximately the center of the upper plate portion 6.
A groove 9 having a U-shaped cross section is integrally formed parallel to the groove 8 . Further, a plurality of ribs 10 are arranged in a row on each outer surface of the leg side walls 8, 8, so that the clamping and mooring to the outlet 2 can be carried out more reliably.

The earth lead-out wire fastener 5 of the present invention constructed as described above is constructed by sandwiching both ends of the ground lead-out wire 4 provided inside the utility pole 1 into grooves 9 formed in the upper plate portion 6, respectively. In this state, the ground lead wire 4 is wound around the back surface of the upper plate part 6, and returned to the front surface of the upper plate part 6 again, and the upper plate part 6 is wound once and fixed. Then, the leg side walls 8, 8 are inserted into the outlet 2, and the flanges 7, 7 are brought into contact with the outer edge of the outlet 2 and fixed. At this time, since the width of both flange parts 7, 7 is formed to be slightly longer than the width in the width direction of the opening of the oval cylindrical stopper 2, both fixed flange parts 7, 7 are formed in the recess in the center part. The grooves 9 are pressed at the same time to generate elastic force in the grooves 9. As a result, the leg side wall 8,
8 bounces elastically outward due to the warpage of the upper plate parts 6, 6, comes into pressure contact with the inner wall of the outlet 2, and is further pushed against the inner wall of the outlet 2 by the rib 10 provided on the outer surface. It can be easily moored.

When the utility pole 1 is erected, at the site, one of the fasteners 5 is taken out from the outlet 2, the ground lead wire 4 wound around the upper plate part 6 is removed, and the ground lead wire 4 is connected to the ground lead wire 4. If a ground wire (not shown) is tied together, then the stopper 5 moored to the other outlet 2 is removed from the outlet 2, and the ground lead wire 4 is pulled out from inside the utility pole 1, the bonded part of the ground wire is removed. is exposed from the outlet 2 on the other hand, so that the ground wire can be easily inserted into the utility pole 1. moreover,
Pull out the lower end of the ground wire from the outlet 2 to the outside of the utility pole 1, extend it inside the utility pole without slackening it, fit the stopper 5 into the outlet 2, and then tighten the upper part of the ground wire that has been pulled out of the utility pole. It is clamped and moored in a groove 9 provided in the upper plate part 6, and a ground rod is connected to the hanging tip and buried in the ground. Since the ground wire is held in the groove 9 of the stopper 5 at the point where it is pulled out from the utility pole, it can be handled stably without being blown around by the wind.

[Effect of idea]

As described above, the earth lead-out wire fastener of the present invention is such that the ground lead-out wire is held in the groove provided in the upper plate part and then the upper plate part is wound around once to be moored. Therefore, it can be installed extremely easily and with good workability. Moreover, the recessed groove provided in the top plate of the stopper adds elasticity to the U-shaped leg sidewalls, and this elasticity causes the leg sidewalls to come into pressure contact with both inner walls of the drawer opening, and further on the outer sidewalls. The provided ribs allow the stopper to be securely anchored to both inner walls of the outlet, thereby making it possible to securely fit the stopper to the outlet. Furthermore, since there is no bending piece installed between the leg side walls, the shape is simple and can be manufactured at low cost.Furthermore, since there is no bending piece, it is easy to wind the ground lead wire around the top plate. It has the advantage of being extremely easy to achieve.

[Brief explanation of the drawing]

The figures relate to an embodiment of the present invention; Fig. 1 is a perspective view, Fig. 2 is a perspective view of the state inserted into the drawer opening,
FIG. 3 is a usage state diagram showing the device installed on a utility pole, and FIG. 4 is an enlarged cross-sectional view of its main parts. 2... Ground wire outlet, 5... Stopper, 6...
...Top plate part, 7, 7... Flange part, 8, 8... Leg side wall, 9... Concave groove, 10... Rib.

Claims (1)

[Scope of utility model registration request] In a ground lead-out line fastener made of an elastic body that has flanges on the left and right sides of the upper plate part and a U-shaped leg side wall protruding from which the ground wire is hooked to the ground wire outlet, the width of both ends of the flange is The flange is formed to be slightly longer than the diameter of the opening of the ground wire outlet that both ends of the flange abut, and is integrally formed with a groove having a U-shaped cross section parallel to the leg side wall approximately in the center of the upper plate part. Furthermore, a plurality of ribs are arranged in a row on each outer surface of the leg side wall, and when the ground lead-out wire stopper is fixed to the ground wire outlet, the elastic force generated by the U-shaped groove is utilized. A fastener for a ground lead-out wire, characterized in that it is fitted into an outlet of the ground wire.