JPS5848390A - High frequency deicing device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a high-frequency defrosting device that defrosts frozen foods and the like using high frequencies, and its purpose is to effectively shield electromagnetic waves leaking from a door portion during defrosting.

As shown in FIG. 1, the electromagnetic wave shielding device for the door in the conventionally known high-frequency thawing device has the following characteristics.

There is a device in which a metal contact piece 2 is arranged around the input port 1 and is configured to come into contact with the input port field 3. This has the drawback that the object 4 to be thawed may get caught on the metal contact piece 2, causing the metal contact piece 2 to bend, or causing injury if the metal contact piece 2 hits the metal contact piece 2. In addition, since the metal contact piece 2 is subjected to direct impact when the input port field 3 is opened and closed, it may become deformed due to long-term use, or
Due to the misalignment between the metal contact piece 2 and the input port field 3, the adhesion between the metal contact piece 2 and the input port field 3 deteriorates, resulting in an unstable electromagnetic wave shielding effect.

The present invention aims to eliminate the above-mentioned conventional drawbacks, and embodiments thereof will be described below with reference to FIGS. 2 to 4.

In the figure, 7 is a first metal contact piece having a curved cross-section and a comb-shaped tip, which is close to the periphery of the inlet 1 and whose one end is fixed with a mounting bracket 8; This is a second metal contact piece having a belt-shaped tip portion having a chevron-shaped cross section and one end of which is fixed to the outer side of the first metal contact piece 7 around the periphery by a mounting member 9 .

3/, - The first metal contact piece A and the second metal contact piece 1o are configured such that their tips are close to each other and face each other, and the tip of the second metal contact piece 1o is closer to the first metal contact piece 1o. It is arranged so as to cover the tip of the metal contact piece 7. Further, when the input port 3 is in a closed state, both the first metal contact piece 7 and the second metal contact piece 10 come into elastic contact with the back plate 3' of the input port 3. There is. The reason why the tip of the first metal contact piece 7 is comb-shaped is to facilitate contact with the inlet portion 3 and improve adhesion, thereby improving the shielding effect.

In the above configuration, when the input port 3 is opened and the thawed object 4 is put in or taken out, the tip of the first metal contact piece 7 is covered by the second metal contact piece 1o, so that the thawed object 4 is removed. 1st
The tip of the metal contact piece 7 will not get caught and bent, nor will your hand hit it and cause injury. The tip of the second metal contact piece 1o is connected to the input port 1.
Since it faces the direction of and is reinforced with the mounting member 9,
This will never bend.

Moreover, since both the first metal contact piece 7 and the second metal contact piece 10 contact the input port 3 and are doubly shielded, the first metal contact piece 7 or the second metal contact piece 10 The electromagnetic wave shielding effect is improved compared to when only one of these is used, and instability of the shielding effect can be suppressed. Further, 1. If the mounting member 9 is made of metal or a magnetic material such as ferrite or metal, an even greater shielding effect can be expected.

Although the above embodiment uses the mounting member 9, if the second metal contact piece 10 is shaped like 10' as shown in FIG. 5, the mounting member 9 is not necessary and the same effect can be obtained. Obtainable.

As described above, according to the present invention, even if the tip of one metal contact piece has a shape that is easy to bend and easily get caught in the hand, it can be protected from the outside, is excellent in terms of safety, and has excellent electromagnetic wave shielding performance. Since it is double shielded with two types of metal contact pieces, it is possible to provide a high frequency thawing device that exhibits a more stable i effect than the conventional one.

[Brief explanation of the drawing]

,6. FIG. 1 is a cross-sectional view of a conventional high-frequency thawing device, FIG. 2 is a left half front view of the inlet portion of the high-frequency thawing device according to an embodiment of the present invention, and FIG. 3 is a sectional view of the inlet portion. FIG. 4 is a partially detailed cross-sectional view of FIG. 3, and FIG. 6 is a detailed cross-sectional view of an inlet portion in another embodiment. 1... Input port, 3... Input port section, 4.
...Object to be thawed, 7...First metal contact piece, 10°·°°°°second metal contact piece. Figure 1 Figure 2 1θ 9 Figure 3 Iθ Figure 4 Figure 5

Claims (2)

[Claims] (1) Around the input port of the main body of the device, there is a first tube that elastically contacts the input port field. a second metal contact piece is provided;
the metal contact piece is placed close to the input port, and the second metal contact piece is placed outside the first metal contact piece,
A high frequency thawing device in which the tip of a first metal contact piece is covered with a second metal contact piece. (2) The high-frequency thawing device according to claim 1, wherein the first metal contact piece is comb-shaped with a curved cross section, and the second metal contact piece is band-shaped with a chevron-shaped cross section.