JPH069423Y2 - Vacuum valve holding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] In this invention, the lower end of a vacuum valve is held by a frame via a bushing, and a movable conductor led out from the upper part of the vacuum valve has a small hole for a branch conductor. The present invention relates to a vacuum valve holding device which penetrates and an upper end of a movable conductor is connected to a branch conductor by a flexible lead wire.

[Conventional technology]

Conventionally, a vacuum valve holding device is constructed as shown in FIG.

That is, the lower end of the vacuum valve (1) is held by the frame via bushing, and the movable conductor (2) led out from the upper part of the vacuum valve (1) penetrates the small hole (4) of the branch conductor (3). Then, the conductive block (5) is attached to the upper end of the movable conductor (2).
Are fixed, and the conductive block (5) and the branch conductor (3) are electrically connected by a flexible lead wire.

Then, in the vacuum valve (1), the operating rod is moved up and down by the rotation of the operating spindle, and the movable conductor (2) connected to the operating rod via the conductive block (5) is moved up and down to move the movable conductor (2). The movable contact at the lower end of the vacuum valve (1) opens and closes as the movable contact at the lower end of the fixed valve contacts the fixed contact at the upper end of the fixed conductor inside the vacuum valve (1).
The conductor connected to the fixed conductor and the branch conductor (3) become non-conductive and conductive.

[Problems to be solved by the invention]

By the way, in the case of the conventional holding device, the vacuum valve (1)
Since the lower end of the is only held by the frame through the bushing, it is difficult to align the movable conductor (2) and the small hole (4) during assembly, and assembly adjustment is not easy.

In addition, when the movable conductor (2) moves up and down, the movable conductor (2) moves to one side and falls and contacts the branch conductor (3), resulting in a large load force due to the contact friction between the metal and the shunt. ， It has a drawback that it causes arcing and welding phenomenon and unstable operation.

The small hole (4) is limited in terms of the current carrying capacity of the branch conductor (3).

The present invention was made with the above problems in mind.

[Means for solving problems]

Next, means for solving the problem will be described with reference to FIG. 1 corresponding to the embodiment.

This invention is provided with an insulative centering guide (6), the lower part of the guide (6) is fitted to the upper peripheral wall of the vacuum valve (1), and the upper part of the guide (6) is connected to a branch conductor. The technical means is adopted in which the movable conductor (2) is fitted into the small hole (4) of (3) and penetrates into the hollow portion of the guide (6).

[Action]

Therefore, attach the vacuum valve (1) to the bottom of the alignment guide (6).
The movable conductor (2) and the small hole (4) can be aligned with each other only by fitting the upper part of the upper peripheral wall of the small hole into the small hole (4).

Further, even if the movable conductor (2) moves to one side and falls down and comes into contact with the guide (6), shunting, arcing, and welding phenomena do not occur because the guide (6) is insulative.

〔Example〕

Next, this invention will be described in detail with reference to FIGS. 1 and 2 showing one embodiment thereof.

In the figure, the same symbols as those in FIG.
The feature of this figure is that the lower part of the insulating centering guide (6) is fitted to the upper peripheral wall of the vacuum valve (1), and the upper part of the guide (6) is fitted with the small hole (4) of the branch conductor (3). It is the point that the movable conductor (2) is penetrated into the hollow part of the guide (6).

Then, the vacuum valve (1) is installed on the frame (7).
The fixed conductor (10), which is held via (8) and which has a fixed contact (9) at its upper end, is connected via the lower conductor (11) to the bushing (8).
Connected to the conductor (12) of.

The movable conductor (2) of the switch (1) has a movable contactor (13) at its lower end, and a flexible lead wire whose one end is connected to a conductive block (5) fixed to the upper end of the movable conductor (2). The other end of (14) is bolt (1
5), connected to the branch conductor (3) by a nut (16).

Next, the movable conductor (2) is a conductive block (5), an insulator (19),
It is connected to the operating spindle (17) via the operating rod (18). In addition, (20) is an insulating support.

Then, the operating rod (18) moves up and down by the rotation of the operating spindle (17), and the movable conductor (2) passes through the insulator (19) and the conductive block (5).
Moves up and down, and the movable contactor (13) separates from and contacts the fixed contactor (9).

Therefore, according to the above embodiment, the centering guide (6)
Fit the lower part of the
Only by fitting the upper part of (6) into the small hole (4), the movable conductor (2) and the small hole (4) are aligned at the time of assembly, and the assembling work is extremely simple.

Moreover, even if the movable conductor (2) may come into contact with the guide (6), since the guide (6) is insulative, shunting, arcing and welding phenomena do not occur.

[Effect of device]

As described above, according to the vacuum valve holding device of the present invention, the movable conductor is provided by providing the centering guide (6).
The centering of (2) and the small hole (4) can be performed very easily, and the assembling work is easy.

Furthermore, even if the movable conductor (2) contacts the guide (6),
Since (6) is an insulator, shunting, firing, and welding phenomena do not occur, and these abnormalities can be prevented.

[Brief description of drawings]

FIG. 1 is a partially cut front view of an embodiment of a vacuum valve holding device of the present invention, FIG. 2 is an enlarged cut front view of a part of FIG. 1, and FIG. 3 is a cut front view of a conventional example. . (1) ... vacuum valve, (2) ... movable conductor, (3) ... branch conductor, (4)
… Small hole, (6)… Centering guide.

Claims (1)

[Scope of utility model registration request] 1. A lower end portion of a vacuum valve is held by a frame through bushing, a movable conductor led out from an upper portion of the vacuum valve penetrates a small hole of a branch conductor, and an upper end portion of the movable conductor is flexible. In a vacuum valve holding device connected to the branch conductor by a lead wire, a lower part is fitted to a peripheral wall of an upper end part of the vacuum valve, an upper part is fitted to the small hole, and an insulation in which the movable conductor penetrates a hollow part. Vacuum valve holding device equipped with a centering guide for elasticity.