JPH0212483Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a door structure for a high-frequency heating device, and particularly to a door structure for a high-frequency heating device that can be easily assembled.

[Technical background of the invention]

Fig. 1 shows a conventional high-frequency heating device, in which an operation panel 3 equipped with a cooking switch 2 and the like is attached to the front of the main body 1, and a door 4 for opening and closing the cooking chamber is provided. ing.

As shown in FIG. 2, the door 4 has an outer barrier plate 7 fastened with screws 8 to the front side of a door plate 6 having a rectangular opening 5 in the center, and the rear side of the door plate 6. On the side, a screen 9 with a large number of punched holes to allow observation of the inside of the cooking chamber, and a spacer 11 with an inner barrier plate 10 fitted inside, are inserted to form the door plate 6. A contact piece 12 is tightened and fixed with a screw 13 so as to close the opening 5, and a door cover 15 has a ferrite bar 14 inserted into the periphery to prevent radio wave leakage.
is fixed by engaging the peripheral edge of the opening 16 provided in the door cover 15 with the front side of the peripheral edge of the contact piece 12.

[Problems with background technology]

In the door structure described above, assembly work is extremely difficult due to the large number of parts and the number of tightening points using screws.
Due to cracks that occur in part of the spacer 11 or insufficient tightening of the contact piece 12 when fitting the two, water vapor generated from the food in the cooking chamber may enter between the outer barrier plate 7 and the inner barrier plate 10, causing the barrier to deteriorate. It has the disadvantage that it can cloud the board.

[Purpose of invention]

The present invention was devised in view of the above-mentioned drawbacks, and it is an object of the present invention to provide a door structure for a high-frequency heating device that is easy to assemble and can prevent fogging of the barrier plate.

[Summary of the idea]

In order to achieve the above object, the present invention includes a screen with a large number of punched holes on the rear side of the door plate so that the inside of the cooking chamber can be observed, and an inner barrier provided to cover the rear side of the screen. In the door structure of a high-frequency heating device comprising a plate and a contact piece, the screen and the contact piece are integrally molded to form a screened contact piece, and the screened contact piece is fixed to the door plate. Additionally, the inner barrier plate is fixed to the rear side of the screened contact piece using an adhesive sealant, thereby reducing the number of parts and the number of tightening points.

[Example of idea]

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 3 to 5, and the same parts as in FIGS. 1 and 2 will be denoted by the same reference numerals, and the explanation thereof will be omitted.

FIGS. 3 and 4 show an embodiment of the present invention, in which a screened contact piece 17 is provided, in which a screen and a contact piece are integrally molded.
The interior of the cooking chamber can be observed by providing a large number of punching holes. An engaging portion 18 is provided on the peripheral edge of the screened contact piece 17 and is bent forward. This screened contact piece 17 is closely fixed to the rear side of the door plate 6 by welding or the like so as to close the opening 5 of the door plate 6. As shown in FIG. 5, an adhesive sealant 19 such as silicone is applied to the rear peripheral edge of the screened contact piece 17, and the inner barrier plate 10 is closely fixed to the peripheral edge. In addition, the opening 16 of the door cover 15
An engagement groove 20 is provided on the rear surface side of the periphery of the door cover 15, and as shown in FIG. A door cover 15 is fixed.

Therefore, in this embodiment, since the screen and the contact piece are integrally molded, the number of assembled parts is reduced, and the screws 8 are tightened only when attaching the outer barrier plate 7 to the door plate 6.
This makes it possible to easily assemble the door.
Furthermore, since the screened contact piece 17 and the inner barrier plate 10 are fixed by welding and adhesive sealant 19 instead of tightening with screws, the degree of adhesion between each member is extremely high, and the outer barrier plate 7 and the inner barrier plate It is also possible to prevent water vapor from entering between the plate 10 and the plate 10.

[Effect of idea]

As described above, the door structure of the high-frequency heating device according to the present invention includes integrally molding a screen and a contact piece to form a screened contact piece, and fixes this screened contact piece to the door plate. Since the inner barrier plate is fixed to the rear side of this contact piece with a screen using an adhesive sealant, a spacer is not required, and the number of parts can be reduced. , it becomes possible to perform assembly work easily. Furthermore, since the screened contact piece and the inner barrier plate are fixed using an adhesive sealant instead of using screws, there is no possibility of cracks or insufficient tightening of the screws, which is the case with conventional methods. Water vapor does not enter between the barrier plate and the inner barrier plate, and it is possible to effectively prevent the barrier plate from fogging.

[Brief explanation of drawings]

Figure 1 is a front view of a conventional high-frequency heating device;
Fig. 2 is an exploded perspective view showing a conventional door structure, and Figs. 3 to 5 show an embodiment of the present invention.
FIG. 3 is an exploded perspective view, FIG. 4 is a longitudinal sectional view, and FIG. 5 is an exploded perspective view showing means for fixing the screened contact piece and the inner barrier plate. 1...Main body, 2...Cooking switch, 3...Operation panel, 4...Door, 5, 16...Opening, 6...Door plate, 7...Outer barrier plate, 8, 13...Screw, 9 …
... Screen, 10 ... Inner barrier plate, 11 ... Spacer, 12 ... Contact piece, 14 ... Ferrite bar, 15 ... Door cover, 17 ... Contact piece with screen, 18 ... Engagement part, 19 ... ...adhesive sealant, 20...engaging groove.

Claims (1)

[Scope of utility model registration request] A high-frequency device comprising a screen with a large number of punched holes on the rear side of the door plate so that the inside of the cooking chamber can be observed, and an inner barrier plate and contact piece provided to cover the rear side of the screen. In the door structure of the heating device, the screen and the contact piece are integrally molded to form a screened contact piece, the screened contact piece is fixed to the door plate, and a screen is attached to the rear side of the screened contact piece. A door structure for a high-frequency heating device, characterized in that the inner barrier plate is fixed with an adhesive sealant.