JPS6120805Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of an airborne multi-circuit switch.

In urban areas where high-voltage underground power distribution is used, multi-circuit switches are installed and operated on sidewalks to branch out many high-voltage systems.

Since this multi-circuit switch is installed on a public road, it is an oil-less type to prevent any danger, and for system construction, testing, etc., it can be optionally grounded at the electrode part, Meg measurement, and voltage resistance test terminals. A two-point cut-off method with air slit extinction is adopted so that it can be installed.

One of the inventors of the present invention has already proposed this excellent power distribution structure for a multi-circuit switch, and it has been put into practical use.

This will be briefly explained with reference to the attached drawings.

In FIG. 1, reference numeral 1 indicates common electrodes arranged in parallel and electrically connected by a common electrode bus bar 2. In FIG.

Reference numeral 3 designates branch electrodes that form a pair with the common electrode 1, which are arranged in parallel and are molded and fixed together with the common electrode 1 with a solid insulator 4, thereby forming a fixed electrode 8.

Reference numeral 6 is a movable electrode which can be attached and detached between the pair of common electrode 1 and branch electrode 3, and by attaching and detaching movable electrode 6, the circuit between common electrode 1 and branch electrode 3 is opened and closed. be.

Generally, a switch is composed of three phases, R, S, and T, and three fixed electrodes are arranged side by side as shown in Figure 2.
It is placed in the outer box 7 and installed.

In this case, as is clear from FIG. 2, the outer box 7 has a rectangular planar shape with substantially equal width, depth, and thickness. By the way, as mentioned above, since this type of multi-circuit switch is installed on a sidewalk, etc., it is desired to have a slim, thin shape that prevents traffic obstruction and is difficult to see.

However, in the conventional multi-circuit switch, as shown in Fig. 2, the line connecting the pair of common electrodes 1 and branch electrodes 3 is perpendicular to the line connecting the common electrodes 1 arranged in parallel, so the depth is thick. It has become thick,
When installed on sidewalks, etc., they have the disadvantage of blocking traffic and blocking the view of traffic.

On the other hand, a through hole is formed at a predetermined distance from the common electrode coupling position in a common electrode bus bar 2 that extends along a line connecting the plurality of common electrodes 1 and electrically couples the common electrodes. Each common electrode is drilled in pairs, and the branch electrodes 3 are passed through these through holes so as not to come into contact with the bus bar 2, and the wires connecting the common electrodes 1 and the common electrodes 1 are connected to the branch. A structure in which the lines connecting the electrode 2 and the electrode 2 are aligned has already been proposed (if necessary, please refer to Japanese Patent Publication No. 10352/1983).

This is because the common electrodes and branch electrodes connected by the movable electrode 6 are all aligned on the same line and are arranged alternately, so the thickness can be reduced to the level considered by arranging one electrode, and it is significantly thinner. However, because of this, twice as many electrodes as in the conventional electrode arrangement are arranged at a predetermined distance apart in the direction in which each electrode is lined up, and the width in the horizontal direction becomes considerably large, causing the problem of obstructing the view. arise.

In addition, since the branch electrodes are placed through the holes in the bus bars of the common electrode that are to be connected to each other via the movable electrodes, the bus bars of the common electrode and the branch electrodes are close to each other, and the insulation distance between them is extremely small, making it reliable. There was a problem of decreased sex.

In view of the above points, the present invention aims to provide an excellent airborne multi-circuit switch that is not too wide, thin, and highly reliable.
The gist of this is that a plurality of common electrodes are arranged in parallel and electrically connected, a fixed electrode is formed by forming a pair with the common electrode and is an independent branch electrode molded with a solid insulator, and In an air multi-circuit switch consisting of a movable electrode that opens and closes by attaching and detaching between a common electrode and branch electrodes,
The aerial multi-circuit switch is characterized in that the line connecting the pair of common electrodes and the branch electrodes is inclined at a predetermined angle with respect to the line connecting the common electrodes arranged in parallel.

An embodiment of the switch of the present invention will be explained with reference to FIG.

The overall structure of the switch of the present invention is almost the same as that of the conventional switch shown in Fig. 1, so a detailed explanation will be omitted here. The common electrode 1 and the branch electrodes 3 are arranged so that the line connecting the common electrode 1 and the branch electrode 3 (in the direction of the movable electrode 6), which is paired with the line connecting the electrodes 1, is inclined.

The fixed electrode 5 has a smaller depth and thickness than a conventional switch in which the line connecting the common electrode 1 and the branch electrode 3 is arranged at right angles to the line connecting the common electrodes 1.

In addition, as an improved example of thinning the above example, the common electrode and the branch electrodes that are connected to each other via the movable electrode are arranged on the same line, and the common electrode and the branch electrodes are arranged alternately. Compared to the switch structure, the width along the direction in which the common electrodes are lined up (the direction in which the branch electrodes are lined up) can be reduced, and the branch electrodes and common electrode busbars maintain an independent relationship with each other to reduce the insulation distance between them. Reliability is also improved by being able to arrange the device with a larger size.

That is, it has a width and depth thickness that are intermediate to those of conventional switches, and the thickness in the depth direction can be reduced without increasing the width.

As explained above, the present invention makes it possible to provide a highly reliable aerial multi-circuit switch with a small thickness in the depth direction without increasing the width.
Its practical value is great.

[Brief explanation of the drawing]

FIGS. 1 and 2 are explanatory views showing an example of a conventional air multi-circuit switch, and FIG. 3 is an explanatory view showing an embodiment of the air multi-circuit switch of the present invention. 1: Common electrode, 2: Common electrode busbar, 3: Branch electrode, 4: Solid insulator, 5: Fixed electrode, 6: Movable electrode.

Claims (1)

[Scope of utility model registration request] a plurality of common electrodes arranged in parallel and electrically connected; a fixed electrode formed by molding an independent branch electrode paired with the common electrode with a solid insulator; and the paired common electrode and the branch. In an airborne multi-circuit switch consisting of movable electrodes that are opened and closed by attaching and detaching between the electrodes, the line connecting the pair of common electrodes and branch electrodes has a predetermined distance from the line connecting the common electrodes arranged in parallel. An airborne multi-circuit switch characterized by being configured to be inclined at an angle of .