JPS616516A - High-frequency heating apparatus - Google Patents

Abstract

PURPOSE:To secure extremely great effective capacity of heating chamber as compared with external size and conceal the poor appearance of fabrication joint part by a method wherein a case body is constituted of one sheet of shell plate and decorative sash is applied by rolling around the fabrication joint of case body, rear plate and front plate. CONSTITUTION:A shell plate 3 is consisted of an upper plate 4, a left side plate 5, right side plate 6 and a bottom plate 7, using one sheet plate. After the joint favrication work, the shell plate 3 covers the front plate 1 and the rear plate 2, further, it becomes a surface plate. Therefore, the appearance of these lapped portion is poor because of remaining welding traces, screws or the like when left as it is. The sash 15 of extrusion molding form, made of plastic, aluminum alloy, or rubber, is inserted into the joint. The sash 15 is constituted so as to cover not only the surface of the shell plate 3, but also the joint end 16 to the rear side plate 17 in the manner of embracing the entire body, whereby welding traces and screw joints are completely covered and concealed and also a float-up movement is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a housing structure in a high frequency heating device such as a microwave oven.

Conventional configurations and their problems Conventionally, the housing configuration of high-frequency heating devices such as microwave ovens has a heating chamber that heats the object to be heated, and a high-frequency generator and other electrical components located above, below, or to the side of the heating chamber. It consisted of an electrical room for storing electricity, and these were covered with a metal outer shell.

The front plate having an opening for taking in and out the heated object is provided with a door that can be opened and closed to cover the opening, and is further provided with an operation panel on the front side of the electric room, and when the field is closed, it becomes flush with the surface of the operation panel. The peripheral portion of the front plate in contact with the door frame extends outside the heating chamber and also plays the role of fixing the outer shell.

According to this configuration, a gap is created between the outer shell material and the heating chamber,
There was a drawback that the effective volume occupied by the entire external shape of the heating chamber was relatively small. Of course, there are ways to use these spaces, such as incorporating various mechanical devices or inserting insulation materials, but in recent years, as the area of kitchens has been decreasing, it has become increasingly difficult to install cooking utensils such as microwave ovens. It was in vain.

If the size of the heating chamber is made larger than the overall size of the product, the amount that can be cooked at once increases, which has the advantage of shortening the cooking time accordingly.

Some heating devices are constructed so that the wall where the heating chamber is located directly forms the outer shell of the device body, but other parts may be joined to other parts using methods such as spot welding or screw fastening. Since it is undesirable for these joints to be exposed on the outer surface, the structure is such that these joints are placed on the back side of the device, which is not very useful in reducing the installation area.

Purpose of the Invention The present invention eliminates the above-mentioned conventional drawbacks, provides a housing structure that can secure an extremely large heating chamber volume in relation to the overall external shape of the device, and also increases the product value by covering the bonding marks so as not to make them look unsightly during bonding. The purpose is to provide an easy-to-use configuration.

Structure of the Invention In order to achieve the above object, the structure of the present invention is to sandwich a partition plate between the upper and lower sides of the heating chamber and the electrical chamber, and integrate the left and right side surfaces and the upper and lower surfaces with a body plate made of a single metal plate. The housing is constructed by joining together a back plate at the rear and a front plate having an opening for the entry and exit of the heated object and an opening for attaching the operation panel at the front, and the outer side of the body plate is The surface directly serves as the outer shell of the device body. Further, decorative sashes made of resin, aluminum, rubber, etc. are wrapped around the joints between the back plate, the front plate, and the body plate to hide the unsightliness of the joints and to be used as a decorative material for the appearance of the product.

According to configuration 4, the effective volume of the heating chamber can be made extremely large relative to the external shape of the main body, and the welds and screws at the joints can be covered to eliminate unsightly appearance, and the shape and molding method of the satshu can be improved. You can also have effects such as being able to freely enhance the decorative effect by selecting the desired one. Tona.

Description of examples Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is an exploded perspective view showing the state of the casing before joining in one embodiment of the present invention, and FIG. 2 is an external perspective view after joining. In the figure, 1 is a front plate, 2 is a back plate, and 3 is the body plate, body plate 3
The top plate 4, left side plate 5, right side plate 6, and bottom plate 7 are constructed from a single plate. A partition plate 8 (indicated by a broken line) separates the top plate 4 and the bottom plate 7.
There is a heating chamber 9 on the left and an electric chamber 1 for storing the high frequency generator and other electrical components on the right.
Set to 0. The front plate 1 has an opening 11 for entering and exiting a heated object, an opening 12 for attaching a control panel, and a hole 14 for attaching a hinge fitting 13 for opening/closing a door (not shown).

After attaching the partition plate 8 to the body plate 3, the front plate 1 and the back plate 2 are inserted as shown by the arrows, and the ends of each plate are aligned and joined. Spot welding is generally used for joining, but seam welding, riveting, screwing, seaming, etc. may also be used.

As is clear from Figure 2, after joining, the body plate 3 will be in a shape that covers the front plate 1 and the back plate 2, and since this part is the outer surface, welding marks and screws will be extremely unsightly if left as is. Become something.

As shown in the cross section in Figure 3, the front ir! #5 Insert the sash 15, which is an extruded product made of resin, aluminum alloy, or rubber. The satchel 15 is configured to cover not only the surface of the body plate 3 but also the joint end face 16 and the back side 17 of the body plate 3, and since it is designed to sandwich these plate parts, it completely removes weld marks, screws, etc. It covers the surface and prevents it from rising. Since the sash 15 is inserted from the front (and rear), there is a possibility that it may come off if pulled with strong force.
8 is provided to be hooked onto the rear protrusion 15a of the satchel. This cut-and-raised part 18 is formed on the relief side with respect to the insertion direction of the sash 15 and in a direction that provides resistance with respect to the dropping direction. In addition, the inner space 19 of Sanonyu 15
Make sure that the head and tip of the screw are hidden. Furthermore, the outer surface of the satchel 15 has a plurality of grooves 15b as shown in FIG.
It is also possible to create a decorative effect, such as by providing a window or changing a part of the color.

Its total length is slightly smaller than the entire circumference of the body plate 3 to be wrapped,
Both ends of the satsushi 15 are joined by adhesive etc. to form a ring shape,
You can also use the elasticity of rubber to stretch it evenly around the entire circumference.

According to the embodiment with the above configuration, the effective volume of the heating chamber 9 can be increased relative to the external shape of the device main body, the weight of the casing can be reduced, and the sash 15 can be fitted to the joint part to hide the joint marks. It is very easy to fit the sash 15 into the sash 15, and it is possible to prevent it from falling off by engaging the cut and raised 18 with the protrusion 15a on the back of the sash 15.The outer surface of the sash 15 is decorated by adding grooves, colors, etc. If rubber is used, it can absorb the dimensional changes and unevenness of the outer periphery of the body plate 3 during processing, and can be wrapped.

Effects of the Invention As described above, according to the present invention, the following effects can be obtained.

(1) The casing is composed of a single body plate, with the heating chamber and electrical chamber inside, and the outer shell of the main body, so it is possible to secure an extremely large effective volume of the heating chamber relative to the external shape, reducing the installation space of the device. can do.

(2) Since the heating chamber and the outer shell material are made of the same material, the weight of the device can be reduced, and the material cost can also be reduced.

(3) When joining the body plate, front plate, and back plate, there are no restrictions on the joining means, and the joint portion can be covered with a sash.

(4) Even when painting the inside and outside in different colors after the casing is joined, if the boundary between the colors is located on the inner surface of the sash, there is no need for post-work such as partial corrections, and the painting will be easier. Manuking can also be simplified.

(5) The sash can be inserted from the front (as well as the rear) without requiring fixing means such as adhesives or clips, and can be cut and raised to prevent it from falling off.

(6) By using a rubber non-piece, it can be wrapped freely and tightly without being affected by irregularities or dimensional changes during bending or joining.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the casing portion of an embodiment of the present invention before joining, FIG. 2 is an external perspective view after joining, and FIG. 3 is a partial sectional view of the sash. 1...Front plate, 2...Back plate, 3...Body plate, 15...Sash, 18...Kiriori. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (2)

[Claims] (1) The ceiling, left and right sides, and bottom of the main unit are made of a single metal plate, which includes a back plate of the main unit, and a front plate that has a heating chamber opening and a door that can be opened and closed to cover it. The high-frequency heating device has a structure in which a decorative sash is wrapped around the entire circumference of the joints between the main body and the front plate, and the main body and the back plate. (2) A configuration in which a plurality of protrusions are provided at each joint between the main body and the front plate, and the main body and the back plate, and these are buried inside the decorative sash and engaged with the protrusions provided on the back surface of the sash. A high-frequency heating device according to claim 1.