JPS581986Y2 - Grounding equipment for high voltage electrical circuits - Google Patents

Description

[Detailed description of the invention] The grounding tool of this invention can easily attach and detach the fitting to the electric circuit even in places where the distance between the wires is small, and since the operating rod is removed from the fitting after installation, it does not get in the way. In addition, since all the metal fittings can be attached and detached from the electric circuit with one operating rod, it is not bulky and can be obtained at low cost. is formed into a concave arc surface 2, a female thread 9 is provided on the other leg B, a groove 3 is provided on the end surface, a wire rod 10 is screwed into the female thread 9, and the wire rod 1
A clamping piece 12 whose inner surface is formed into a concave arc surface 11 is attached to the tip of the wire rod 10 so as to be movable up and down, a protrusion 13 is provided on the rear side of the wire rod 10, and the electric line side fitting 1 and the grounding fitting 14 are connected with a conductor 15. At the tip of the insulated outer tube 16, a prong 17 that fits on both sides of the leg B and an extension root 18 that engages the groove 3 are provided. The operating rod is provided with an insulated inner tube 19 that is movable, the rear end of the insulated inner tube 19 is exposed from the insulated outer tube 16, and a notch recess 20 that fits the protrusion 13 is provided on the tip edge.

Note that the leg part B is formed into a frame shape, holes 6 and 7 are provided in the center of the side plates 4 and 5, respectively, and an elastic washer 8 and a female screw 9 are housed in the frame in order from the outside, and a wire rod 10 is inserted into the hole 6. It is inserted into the washer 8 and the hole I, screwed into the female thread 9, and the insulated outer tube 1 is inserted.
A flange plate 21 is installed in the middle of 6, and the insulated outer tube 1 is attached during installation work.
This prevents the risk of electric shock due to the hand holding the electric circuit slipping forward and touching the electric circuit or electric circuit side metal fitting 1.

The operating rod is attached to the metal fitting on the electric circuit side, and when the operating rod is turned, the clamping piece of the metal fitting advances, and there is a grounding device that clamps and connects the electric circuit, but since the operating rod is attached together with the metal fitting,
In places where the distance between lines is small, it will get in the way of attaching metal fittings to other lines.

Furthermore, since the metal fittings and the operating rod are integrated, they are large in volume and weight, making them inconvenient to carry and expensive.

The grounding tool of this invention eliminates the above-mentioned drawbacks, and how to use it is as follows: the grounding fitting 14 is connected to the grounding terminal 22 at the grounding site.

Next, if the leg part B of the electric circuit side metal fitting 1 is inserted deeply between the prongs 17 at the tip of the insulating outer tube 16, the extension root 18 will fit into the groove 3, and the electric line side metal fitting 1 will be inserted into the insulated outer tube. 16.

Next, the concave arc surface 2 of the leg A is hooked onto the electric circuit 23, the insulated inner tube 19 exposed from the rear end of the insulated outer tube 16 is moved forward, and the concave portion 20 at the tip edge is engaged with the protrusion 13. When the wire rod 10 screwed into the female screw 9 rotates clockwise and screws forward, the clamping piece 12 at its tip moves forward and its concave arc surface 11 moves together with the leg A. Since the electric circuit 23 is clamped, the insulating outer tube 16 is removed from the electric circuit side metal fitting 1.

When removing the electric line side metal fitting 1, attach the tip of the insulated outer tube 16 to the electric line side metal fitting 1, and rotate the insulated inner tube 19 to the left, the clamping piece 12 will move back and the gap between it and the leg part A will become larger. It separates from the electric circuit 23.

In the grounding tool of this invention, the U-shaped electric circuit side metal fitting and the operating rod are made separately, and when installing the metal fitting on the electric circuit, the metal fitting is attached to the tip of the operating rod, and after the metal fitting is attached to the electric circuit, the operating rod is removed. Because it is removable, there is no long operating rod hanging from the electrical circuit, so even in places where the distance between the lines is small, such as in relatively low-voltage high-voltage lines, the operating rod of the already installed metal fitting does not get in the way. The work of attaching metal fittings to other circuits can be easily done.

In addition, all metal fittings can be attached and detached with one operating rod, so
The overall volume and weight are small, making it convenient to carry and inexpensive.

In addition, the inner surface of one leg of the U-shaped bracket and the opposing surface of the clamping piece are each formed into a concave arc surface, so it can be attached to hold a circular electric circuit such as an electric wire, and will not come off from the electric circuit. .

Since the tip of the insulating outer tube is formed into a fork shape and has an extending root, the leg of the electric circuit fitting is held by the fork, and the extending root fits into the groove of the leg, and the electric circuit fitting is and the insulated outer tube are connected, which has many effects such as making work easier.

[Brief explanation of drawings]

Figure 1 is a partially cutaway side view of the grounding device of this invention, Figure 2 is a front view of the electrical circuit fitting, Figure 3 is a front view of the operating rod,
FIG. 4 is a partially cutaway side view showing the connection state of the electrical circuit fitting and the operating rod. 1... U-shaped electrical circuit side fitting, 2, 11...
・Concave arc surface, 3...groove, 9...female thread,
10...Screw pestle, 12...Pinch piece, 13
...Protrusion, 14...Grounding metal fitting, 15...
... Conductor wire, 16 ... Insulated outer tube, 17 ...
...fork, 18... root extension, 19...
・Insulated inner tube, 20... Concavity, A, B...
·leg.

Claims (1)

[Scope of utility model registration request] The inner surface of one leg A of the U-shaped electrical circuit side fitting 1 is a concave arc surface 2.
A female thread 9 is provided on the other leg B, a groove 3 is provided on the end surface, a wire rod 10 is screwed into the female thread 9, and a wire rod 10 is formed.
A clamping piece 12 whose inner surface is formed into a concave arc surface 11 is attached to the tip thereof so as to be movable up and down, a protrusion 13 is provided on the rear side of the wire rod 10, and the electric line side fitting 1 and the grounding fitting 14 are connected with a conductor 15. A grounding tool and an extension root 18 that engages with the fork portion 17 and the groove 3 that fit on both sides of the leg portion B are provided at the tip of the insulating outer tube 16,
The insulated inner tube 1 can be rotated and moved back and forth into the insulated outer tube 16.
9, the rear end of an insulated inner tube 19 is exposed from an insulated outer tube 16, and a notch recess 20 that fits the protrusion 13 is provided on the tip edge of the operating rod.