JPH058756Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to a ground wire clamp for power distribution.

[Conventional technology]

A conventional power distribution ground wire attachment is, for example, a U-shaped metal fitting 53 attached to the upper end of a metal support 52 attached to a concrete column 51, as shown in FIGS. 7 and 8.
and a jade insulator 54 attached to this. When attaching the end of the ground wire 55 to this, the jade insulator 54 removed from the U-shaped metal fitting 53 is fitted into the annular part 57 of the winding grip 56 attached to the end of the ground wire. The ball insulator 54 is attached to the U-shaped metal fitting 53 (Fig. 7), and the ground wire 55
When attaching the middle part of the insulator, the ground wire 55 was placed along the jade insulator 54 and fixed to the jade insulator 54 with a binding line 58.

[The problem that the idea attempts to solve]

However, since the ground wire 55 is attached to the jade insulator 54 provided on the metal support 52, the ground wire 55 and the support 52
It is necessary to connect the ground wire 59 with a ground wire 59, and a bind wire 58 is also required in the case where the middle of the ground wire 55 is attached (FIG. 8). Furthermore, since the ground wire 55 cannot be attached or detached from the insulator 54 without stopping the power transmission, there is a problem in that it causes a great deal of inconvenience to the residents.

The present invention has been developed in view of the above points, and is a distribution ground line that enables efficient installation and removal of the ground wire in the middle and anchoring of the ground wire under live wires, and eliminates the need for a ground wire or binding wire. The purpose is to provide clamps.

[Means to solve the problem]

In order to achieve this purpose, the power distribution ground wire clamp according to the present invention has a metal support mounting hole at one end and an inverted U-shaped ground wire guide groove at the other end. A base metal fitting that protrudes to the opposite side of the metal support and has a holding metal guide surface formed in the middle thereof, and has a bolt hole penetrating through the holding metal support guide surface that slopes toward the metal support mounting hole side, and a metal support in the bolt hole. A bolt that is inserted from the support mounting surface side, a holding metal fitting that loosely fits into this bolt and faces the ground wire guide groove in a holding groove, a coil spring for separating the holding metal fitting from the holding metal fitting guide surface, and a base metal fitting. a protruding guide that restricts and guides the rotation of the presser metal fitting;
It consists of a nut that is screwed onto a bolt and comes into contact with a presser fitting to oppose a coil spring.

[Effect]

When the ground wire is to be secured to the metal support 33, this product is installed horizontally on the metal support 33 and installed in the ground wire guide groove 6.
In addition, when installing the middle of the ground wire on the metal support 33, fit the annular part attached to the end of the ground wire into the metal support 33, and insert the middle of the ground wire into the ground wire guide groove 6. Fit it. In either case, the presser metal fitting 13
The earth wire clamp operation and its release operation are performed by operating the nut 16 using the live wire stay.

When the nut 16 is loosened using the live wire stay, the presser metal fitting 13 is pushed by the coil spring 19 and guided without rotating by the guide 22 of the base metal fitting 2, increasing the distance between it and the wire receiving part 5. When a suitable distance is obtained, the ground wire is inserted into and removed from the ground wire guide groove 6 using the live wire stay. When the ground wire is fitted and the nut 16 is tightened with the live wire stay, the presser metal fitting 13 is guided without rotating by the guide 22 of the base metal fitting 2, compressing the coil spring 19, and the presser metal fitting guide surfaces 7, 25 After coming into contact with the ground wire, it moves along this guide surface and clamps the ground wire with the wire receiving part 5.

That is, the ground wire can be easily attached to and removed from the power distribution ground wire clamp using the live wire stay. The installed ground wire is connected to the metal support via a power distribution ground wire clamp, eliminating the need for a conventionally indispensable ground wire or binding wire.

In addition, when operating the ground wire clamp, releasing the ground wire, and inserting and removing the ground wire into the ground wire guide groove, it is possible to accidentally hit the presser fitting 13 with the live wire stay.
Further, although a rotational moment may act on the presser metal fitting 13, since the presser metal fitting 13 is guided with its rotation restrained by the guide 22 of the base metal fitting 2, the presser metal fitting 13 and the base metal fitting 2 are connected to each other. It is always kept substantially parallel to the wire guide groove 6, so there is no need to adjust the orientation of the presser metal fitting 13.

〔Example〕

Embodiments of the present invention will be described based on the drawings. The power distribution ground wire clamp 1 shown in FIGS. 1 and 2 is
A bolt hole 3 and a dowel pin hole 4 are drilled at one end of the base metal fitting 2, and a wire receiving part 5 with an inverted U-shaped ground wire guide groove 6 formed at the other end is projected to the opposite side of the metal support mounting surface 23. Set up Further, a guide portion 8 formed with a presser metal guide surface 7 facing the base wire guide groove 6 is provided protruding near the wire receiving portion 5 of the base metal fitting 2, and a bolt 11 passing through the center of the presser metal fitting guide surface 7 is provided. The bolt head 9 is installed obliquely and is locked in the locking hole 10 opened in the metal support mounting surface 23, and the bolt 11 is formed with a holding groove 12 for pinching the ground wire with the ground wire guide groove 6. Insert the presser fitting 13, fit the washer 14 and spring washer 15, and attach the nut 16. Presser metal fitting 1
3 is formed with a slope 17 that comes into contact with the presser fitting guide surface 7 of the guide portion 8, and a spring chamber 18 coaxial with the bolt hole is formed in the guide portion 8.
Holding metal fitting 13 with coil spring 19 partially housed in
is spaced apart from the presser fitting guide surface 7. When the nut 16 is loosened, the holding fitting 13 is pushed out in the direction of the bolt axis 21 by the coil spring 19, and the holding groove 12 is removed from the ground wire guide groove 6. In this case, rotation of the presser metal fitting 13 is restrained by a pair of guides 22, 22 protruding from both sides of the guide portion 8. The pair of guides 22, 22 may be replaced with two guide shafts parallel to the bolt axis 21, for example.

Distribution ground wire clamp 1 shown in Figures 3 and 4
The bolt axis 21 and the metal support mounting surface 23 of the base metal fitting 2 are different from those shown in FIGS. 1 and 2.
The angle α formed with
They are different in that they are parallel to the metal support mounting surface 23 and that the locking step 26 formed at the base of the bolt 11 is locked in the locking hole 27 of the base metal fitting 2, but the other configurations are the same. Therefore, corresponding parts are given the same reference numerals and their explanation will be omitted.

As shown in FIG. 5, the power distribution ground wire clamp 1 includes a plurality of bands 31 and mounting fittings (not shown).
When attaching the middle of the ground wire 55 to the iron support 33 attached to the concrete column 32, attach the bolt 35 and the dowel pin 36 with the wire receiving part 5 facing down.
Fit the middle of the ground wire 55 into the ground wire guide groove 6 between the presser metal fitting 13 and the wire receiving part 5, which are installed vertically at the upper end of the column 33 and opened in advance, and tighten the nut 16 to connect the presser metal fitting 13. The ground wire 55 is clamped with the base metal fitting 2. When securing the ground wire, as shown in Figure 6, attach the power distribution ground wire clamp 1 to the bolt 35.
After horizontally installing it on the upper end of the support column 33 with the dowel pin 36, the presser metal fitting 13 and the wire receiving part 5, which were opened in advance.
Winding grip 56 attached to the end of the ground wire between
Fit the annular part 57 into the ground wire guide groove 6, and then tighten the nut 16.
is tightened to clamp the annular portion 57 between the presser metal fitting 13 and the base metal fitting 2.

Therefore, in order to attach the middle of the ground wire 55 to the power distribution ground wire clamp 1 under a live wire condition, if the space between the holding metal fitting 13 and the wire receiving part 5 is narrow, loosen the nut 16 with the live wire stay. As a result, the ground wire 55 is fitted into the ground wire guide groove 6 with the live wire stay between the presser metal fitting 13 and the wire receiving portion 5 which have been pushed open by the coil spring 19. Next, when the nut 16 is tightened with the live wire stay, the presser metal fitting 13 is guided without rotating by the pair of left and right guides 22, 22, compresses the coil spring 19, and comes into contact with the guide part 8 at the slope 17. After that, move along the guide surface 7 or the guide surface 25 of the guide section 8 to press the presser groove 12 and the wire receiving section 5.
Clamp the ground wire 55 with. In addition, in order to remove the ground wire 55 from the distribution ground wire clamp 1 under a live wire condition, when the nut 16 is loosened with the live wire stay, the holding metal fitting 13 is pushed by the coil spring 19 and the wire receiving portion 5 is removed. When the ground wire 55 is in a state where it can be taken out, the ground wire 55 is removed from the ground wire guide groove 6 using a live wire stay.

[Effect of idea]

Since the present invention is configured as described above,
It produces the following effects.

With this product, the ground wire can be held horizontally on a metal support, and the clamp at the middle of the ground wire can be installed vertically. Therefore, the number of types of power distribution ground wire clamps can be reduced, which is economical. In addition, the ground wire and binding wire that were conventionally used are no longer necessary for the clamp in the middle of the ground wire.
A ground wire is not required when holding the ground wire.

The base metal fitting is equipped with a guide that receives elastic force from a coil spring and restricts and guides the rotation of the holding metal fitting that moves forward and backward by operating the nut of the live wire stay. Installation and removal can be carried out extremely efficiently.

[Brief explanation of drawings]

Fig. 1 is a front view of an embodiment of the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, Fig. 3 is a front view of another embodiment of the invention, and Fig. 4 is a right side view of the same. Figure, 5th
The figure shows a front view of the ground wire clamped at the middle of the ground wire on a steel support, Figure 6 is a front view of the ground wire clamped at the end, and Figures 7 and 8 show ground wire installation using a conventional product. It is a front view showing a state. 2...Base metal fitting, 3, 4...Metal support mounting hole, 5...Wire receiving part, 6...Ground wire guide groove, 7, 2
5... Presser fitting guide surface, 11... Bolt, 12...
... Presser groove, 13... Presser metal fitting, 16... Nut,
19...Coil spring, 22...Guide, 23...
Metal post mounting surface.

Claims (1)

[Scope of utility model registration request] A wire receiving part 5 with metal support mounting holes 3 and 4 formed at one end and an inverted U-shaped ground wire guide groove 6 formed at the other end is provided to protrude toward the opposite side of the metal support installation surface 23, and is held in the middle. A base metal fitting 2 which forms metal fitting guide surfaces 7 and 25 and has a bolt hole penetrating therebetween which is inclined toward the metal support mounting holes 3 and 4 side, and a metal support support mounting surface 23 side formed in the bolt hole. A bolt 11 that is inserted from the
2, a presser metal fitting 13 facing the ground wire guide groove 6;
, a coil spring 19 for separating the presser metal fitting 13 from the presser metal fitting guide surfaces 7 and 25, a guide 22 that is provided protruding from the base metal fitting 2 to restrain and guide the rotation of the presser metal fitting 13, and is screwed onto the bolt 11. Pressing metal fitting 13
a nut 16 that abuts against the coil spring 19;
Ground wire clamp for power distribution.