JPH0222570Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention relates to a structure of a heating chamber of a cooking appliance which is joined by caulking.

<Prior Art> FIG. 1 is an external perspective view of a microwave oven including a cutout of a main part of a heating chamber, and 1 is a microwave oven main body 2.
side wall surface 3 forming the heating chamber 1.
and the ceiling wall surface 4 are joined together by crimping by pressing the bent portion 4' of the ceiling wall surface 4 into the bent portion 3' of the side wall surface 3, as shown in the enlarged sectional view of FIG. has been done. Incidentally, although not shown in detail, the caulking joint portion 5 marked with diagonal lines in the heating chamber 1 is connected to other side wall surfaces, the front plate,
The rear plates are joined together by the caulking described above. In the heating chamber 1 which is caulked and joined in this way, oil adhering to the surface is cleaned in a cleaning process after the joining process. It becomes extremely difficult to clean the oil adhering to the small gap 6 between the bending part 4', and the heat used in the painting and drying process of the inner wall surface of the heating chamber 1 damages the metal and the caulked joint part. This causes the inconvenience that oil etc. expands and flows into the heating chamber 1 as shown by arrow A.
This spilled oil mixed with undried paint and caused painting defects.

<Purpose> The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a caulking-joint type heating chamber that eliminates coating defects in the heating chamber.

<Structure> The present invention has been made in order to achieve the above-mentioned object, and in the caulking joint of the heating chamber of a cooking appliance formed by caulking, a caulking joint piece formed on the outside of the heating chamber is provided. It is characterized by the provision of small holes.

<Example> Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 3 is a perspective view of a main part of a caulking joint of a heating chamber showing an embodiment of the present invention, and FIG. 4 is an enlarged sectional view of FIG. 3, showing a portion having the same function as the conventional example. are given the same reference numerals and detailed explanations will be omitted.

In the figure, numeral 7 indicates a plurality of small holes formed in the bent portion 3' of the side wall surface 3 of the heating chamber 1, and a plurality of small holes are provided at appropriate intervals (for example, about 20 mm).

Next, the operation and effect of the embodiment of the present invention having the above-mentioned configuration will be explained. After painting the caulked and joined inner wall surface of the heating chamber 1, when hot air is applied in the drying process, Oil and the like adhering to the small gap 6 between the bent portion 3' of the side wall surface 3 and the bent portion 4' of the ceiling wall surface 4 are formed on the bent portion 3' of the side wall surface 3 of the heating chamber 1. The water flows out of the heating chamber 1 from the small hole 7 as shown by the arrow B, and hardly flows into the inside of the heating chamber 1.

In addition, in the above embodiment, the caulking joint between the side wall surface 3 and the ceiling wall surface 4 of the heating chamber 1 was explained.
Even in the caulking joints of other members constituting the heating chamber 1, such as the ceiling surface and the rear panel, small holes are provided in the caulking joint pieces formed on the outside of the heating chamber 1, so that oil can be kept inside the heating chamber 1. etc. can be prevented from flowing out.

<Effects> As explained above, the present invention provides a small hole in the caulking joint piece formed on the outside of the heating chamber in the caulking joint of the heating chamber of the cooking appliance which is caulked. It is possible to prevent oils, etc. adhering to the small gaps formed between the caulked joints of the chamber from flowing into the heating chamber, and also to ensure that the heating chamber painting and drying processes can be carried out reliably. It has high practical value.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a microwave oven including a cutout of the main part of the heating chamber, Fig. 2 is an enlarged cross-sectional view of the caulking joint of the heating chamber showing a conventional example, and Fig. 3 shows an embodiment of the present invention. A perspective view of the main parts of the caulking joint of the heating chamber shown in FIG.
FIG. 4 is an enlarged sectional view of FIG. 3. 1... Heating chamber, 3... Side wall surface, 3'... Bent part of side wall surface, 4'... Bent part of ceiling wall surface, 5... Caulked joint part, 7... Small hole.

Claims (1)

[Scope of utility model registration request] 1. A heating chamber for a cooking appliance, characterized in that a small hole is provided in a caulking joint piece formed on the outside of the heating chamber at a caulking joint part of the heating chamber of the cooking appliance.