JPS6025889Y2 - High-voltage capacitor mounting device for high-frequency heating equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a high-voltage capacitor mounting device for a high-frequency heating device with improved safety against high voltages.

The connection terminal of the high-voltage capacitor of the high-frequency heating device has a direct current of 4
A high voltage of kV or more is applied.

Therefore, if the distance between the terminal and the mounting surface, other parts in the casing, or the body of the capacitor itself is small, a very dangerous situation such as dielectric breakdown or arcing may occur.

Conventionally, this high-voltage capacitor has been mounted by placing the body a along the side wall d and fixing it with a band C, as shown in FIGS. 1 and 2, due to space constraints.

Terminals S and B protrude from the top surface, and the distance A to the side wall d, the distance C to other parts such as the transformer e, and the distance B to the body A, etc., are all air insulated, and air has high voltage resistance characteristics. is not that high, so the above-mentioned danger exists.

In particular, A is the most anxious in terms of distance.

In order to increase this distance, do as shown in Figure 3,
In addition to the space factor, it is also necessary to use two fixtures f, which is disadvantageous in terms of cost.

The present invention provides a high-voltage capacitor for a microwave oven that eliminates the above-mentioned dangers and does not cause disadvantages in terms of space or cost.

An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 4 and 5, the capacitor generally has a shape in which terminals 2, 2 are provided on one end surface of a columnar body 1.

The mounting surface 3 utilizes the vertical wall of the casing of the high-frequency heating device.

First, a mounting plate 4 made of highly electrically insulating plastic is attached to the mounting surface 3.

The mounting plate 4 is provided with a notch 5 having substantially the same shape as the side surface of the body 1 facing the mounting surface 3.

Fit the body 1 into this notch 5, and connect the body 1 and the mounting surface 3.
and fix the body 1 with the band 6.

In this case, the band 6 and the mounting plate 4 are aligned using a fixing device such as a screw 7.

FIGS. 6 and 7 show a modified example in which the notch 5 extends integrally with the holder 8 in an arch shape from both side edges, the mounting plate 4 is fixed to the mounting surface 3 with screws, and the capacitor body 1 is placed inside the notch 5. and fit into the holder 8.

In the eighth and ninth illustrations, the arch-shaped holder 9 is widened,
One part extends from both side edges of the end of the notch 5, and the other part extends from the surface of the mounting plate 4 with both side edges extended, and the terminal side end of the body 1 is fitted therein.

The holder 9 protrudes so as to surround the terminals 2, 2.

In this case, if a collar 10 is provided on the inner surface of the holder 9 at the same position as the end of the notch 5, the fit and retention will be stabilized.

The present invention is constructed as described above and operates as follows.

The distance A between the terminal 2 and the mounting surface 4 is the same as before because the body 1 is in close contact with it.

There is no disadvantage in terms of space.

However, the thickness of the mounting plate 4 is interposed between the distance A, and since the mounting plate 4 is made of highly insulating plastic, its voltage characteristics are improved by that much compared to a layer of air alone, preventing short circuits and leakage due to arcs, etc. significantly reduced.

In addition, in the case shown in Figs. 8 and 9, a highly insulating wall surrounds not only the mounting surface side but also the terminal, so the distance B between the terminal and the body and other parts such as the transformer 11 are The withstand voltage characteristics within the distance C between the two electrodes become extremely high.

As described above, the high-voltage capacitor mounting device for the high-frequency heating device of the present invention is such that the capacitor body is brought into close contact with the mounting surface, but a highly insulating mounting plate is interposed between the terminal and the mounting surface. Without sacrificing space, it can increase withstand voltage characteristics and prevent dangerous problems such as dielectric breakdown and arcing.

The holder part that fixes the body can also be integrally molded and is easy to install, and furthermore, this holder improves the insulation between surrounding non-live parts.

It is also low cost and suitable for safely installing high voltage capacitors in microwave ovens.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a conventional high voltage capacitor mounting device, Fig. 2 is a side view of the same, Fig. 3 is a perspective view showing another conventional example, and Fig. 4 is a high voltage capacitor mounting device of the present invention. FIG. 5 is a front view of the mounting plate, FIG. 6 is a perspective view showing another embodiment of the device of the present invention, FIG. 7 is a side view of the same, and FIG. 8 is another embodiment of the device of the present invention. FIG. 9 is a side view of the same embodiment. 1...Capacitor body, 2...Terminal, 3...Mounting surface, 4...Mounting plate, 5...
...Notch, 6...Band, 7...
... Screw, 8,9...Holder, 10...
・Tsuba, 11...Trance.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A mounting plate made of highly insulating plastic having a notch in the shape of the side surface of the capacitor body facing the mounting surface is attached to the mounting surface, and the body is placed in the notch and tightly attached to the mounting surface. A high-voltage capacitor mounting device for a high-frequency heating device, characterized in that the mounting plate is interposed between the terminal and the mounting surface. 2. A high-pressure high-frequency heating device according to claim 1 of the utility model registration claim, characterized in that an arch-shaped holder extending from both side edges of the notch is integrally molded, and a body is fitted into the holder. Capacitor mounting device. 3. A wide arch-shaped holder extending from the side edge of the notch end and the surface of the mounting plate on the extension thereof is integrally molded, and the terminal side end of the capacitor body is slightly fitted into this holder,
A high-voltage capacitor mounting device for a high-frequency heating device according to claim 1, wherein the upper edge of the holder protrudes and surrounds the terminal.