JPH0448610Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an insulating frame that supports a high voltage section applied to a vacuum switch valve, and relates to a vacuum contactor in which this insulating frame also serves as a frame.

[Conventional technology]

Generally, a vacuum contactor (hereinafter simply referred to as a contactor)
The high voltage section of the device is supported by an insulator, which is attached to a metal frame having mounting holes for installation.

On the other hand, the contactor body is usually provided with mounting ribs and holes in case vibration resistance or addition of accessory parts is required. In this case, it is necessary to provide it at a location away from the installation bolt, that is, at a location close to the high voltage charging part. Additionally, metal fittings attached to the ribs are usually at ground potential. This situation will be explained based on the drawings.

FIG. 2 is a perspective view showing an example of a conventional vacuum contactor. FIG. 3 is a view showing an insulating frame provided with ribs in a conventional vacuum contactor, and FIG.
Figure b is its front view. In the figure, 1 is a high voltage section,
2 and 2' are insulating frames, 3 is ribs, 4 and 4' are rib mounting holes, 6 and 6' are metal frames 7 are installation holes, 8 is a vacuum switch valve, and 9 is a coupler. In FIG. 2, holes 4 for attaching ribs (not shown) are provided at the upper and lower ends of the frame 6, as shown. Frame 6 is at ground potential, so
It is necessary to separate it from the high voltage section 1 by a distance E.

Here, since the various parts that make up the contactor are not directly related to the present invention, only a brief explanation will be given.
The contactor in FIG. 2 consists of a frame 6 that holds an insulating frame 2 and a bottom plate, and a vacuum switch valve (hereinafter simply referred to as a valve) provided in the insulating frame 2.
8, a coupler 9 that connects the valve 8 and a suction plate movable by the attraction of the coil, and a high voltage section 1 drawn from both poles of the valve 8. Also the third
In the figure, the frame is divided into a frame that houses the valve and a frame that houses the device that moves the valve, and the former frame, that is, the insulating frame 2'
A valve 8 is provided inside the insulating frame 2', a high voltage section 1 is arranged above and below the bulb 8, and ribs 3 having holes 4' are provided at the four corners of the insulating frame 2'. It is being

Thus, the contactor shown in FIG.
Since a high voltage is applied to the frame 6, there is a risk of leakage to the frame 6 if the distance E is short. Therefore, it is necessary to take a long distance E. This makes it impossible to reduce the size and weight of the contactor, and the size is naturally determined by the necessary and sufficient insulation distance.

In order to cope with this problem, a part of the frame is made of an insulating material, as shown in FIG.

[Problem that the invention attempts to solve]

However, as shown in FIG.
Minimum distance C from high voltage part 1 due to danger etc.
You need to release only D. Although this allows the device to be smaller and lighter than the one shown in FIG. 2, it is still not sufficient.

Therefore, the present invention was devised to eliminate the above-mentioned drawbacks, and its purpose is to provide an insulating frame for a vacuum contactor that is smaller and lighter than conventional ones. It is in.

[Means for solving problems]

The means to achieve this purpose is to provide a concave recess near the center of the outside of the insulating frame in the vertical direction, and to fix a rib to this recess so that it is flush with the outer surface of the insulating frame. It is.

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

〔Example〕

FIG. 1 is a perspective view showing an embodiment of the vacuum contactor of the present invention, and the same reference numerals as in FIG. 2 indicate parts having the same structural functions.

In FIG. 1, a concave depression 5 is provided approximately at the center of the outer side of the insulating frame 2 in the vertical direction, and a rib 3'' is provided in the center of the depression 5.

That is, the rib 3'' is formed integrally with the insulating frame 2 and is configured to be flush with the outer surface of the insulating frame 2.

Thus, the contactor constructed in this way can be made smaller and lighter, even when compared to the full width of conventional contactors, with the minimum required insulation distance.

[Effect of idea]

As explained above, according to the present invention, the contactor can be made smaller, there is no need to worry about damage due to careless handling due to the protrusion provided on the side of the frame, and high insulation properties can also be ensured. Therefore, it is extremely practical.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing one embodiment of the present invention, Figure 2 is a perspective view showing one embodiment of the present invention;
The figure is a perspective view showing one conventional example, Figures 3a and 3b are insulating frames showing one conventional example, figure a is a plan view thereof, and figure b
The figure is a front view. 1... High voltage section, 2, 2', 2'', 2... Insulating frame, 3, 3', 3''... Rib, 5... Concave recess, 6, 6'... Frame, 8... Vacuum switch valve.

Claims (1)

[Scope of utility model registration request] In a vacuum contactor in which an insulating frame that supports a high voltage section applied to a vacuum switch valve also serves as a frame, a concave depression is provided near the center of the outer vertical direction of the insulating frame, and a rib is fixed to the indentation to form an insulating frame. An insulating frame for a vacuum contactor, characterized in that it is configured to be flush with the outer surface of the insulating frame.