JPS6367615B2 - - Google Patents

Description

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

Conventional configuration and its problems Cooking appliances such as microwave ovens are not used near the cooking area of the kitchen, but due to housing conditions and the diversification of cooking-related appliances, the space for placing these cooking appliances has become limited. is subject to major restrictions.

Conventional heating cooking appliances such as microwave ovens are generally equipped with a heating chamber and an operating section to the right of the heating chamber.The operating section is located at the front of the electrical chamber that houses the high-frequency generator and other electrical components. There are knobs such as a timer for setting the heating time and a dial for setting the temperature in the heating chamber.

The reason why these operation parts are located on the right side of the main body is based on the assumption that the majority of users are usually right-handed, and does not take into account the arrangement of various appliances in the kitchen. In other words, depending on where these heating cookers are placed, the door that covers the front of the heating chamber may need to open to the left or the right, and depending on the opening/closing direction of the door, the operating section may also open to the left. In some cases, it may be easier to operate the device if it is on the left side, but in reality there is no such thing as a device with a left-hand control section. Even if the door opens from the front, the operating section is usually located on the right side.
A heating cooking appliance having such a configuration has the disadvantage that it is extremely difficult to operate depending on the location where it is placed, and also requires a large installation space.

Recently, some devices have been seen in which the operation section is placed at the top or bottom of the main body to alleviate the above-mentioned drawbacks. However, in this case as well, the main type is a so-called double structure in which an external material is placed over the outside of the box that constitutes the heating chamber. In other words, there is a certain amount of space between the heating chamber and the external material, and although it is used as a place for installing heat insulating materials, various mechanical parts, and connecting wires, this space makes it difficult for the main body to The drawback remains that the effective volume of the heating chamber is relatively small relative to the external dimensions.

When determining the external shape of the main unit due to installation space constraints,
If we can secure a heating chamber volume that is as large as its external dimensions, the capacity of the heated object will increase accordingly.
This will ultimately lead to a reduction in heating time.
Also, if a heating chamber with the same volume as a conventional heating chamber but without the above-mentioned voids could be created, it would have the advantage of helping to reduce the installation space.
The volume of the heating chamber is proportionally smaller, and when the volume of the heating chamber is used as a reference, the external shape of the main body becomes larger, which has the drawback of requiring a larger installation area.

In addition, the exterior plate and the heating chamber are made of the same material,
Patent application 1986-75780 for a configuration that increases the heating chamber volume
In a configuration like No. 1, if the operation panel and power supply parts were placed at the top or bottom, the opening angle of the vertically opening door was restricted, and there was no space to install a door arm for operating the concealed switch.

Purpose of the Invention The present invention solves the above-mentioned conventional problems, makes the operation part easy to operate regardless of where the appliance is placed, and has an extremely small external dimension compared to the size of the heating chamber, reducing the installation area. The present invention aims to provide a configuration of an exterior plate, a heating chamber, and a door arm of a high-frequency heating device.

Structure of the Invention In order to achieve the above-mentioned object, the high frequency heating device of the present invention has a substantially U
The side wall of the shaped heating chamber is fixed, and an operating space for the door arm of the vertically opening door is created between the double U-shaped interior and exterior, and the switch is pressed at the tip of the door arm when the door is closed. This has the effect of making effective use of the U-shaped space with double interior and exterior.

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

FIG. 1 is an exploded perspective view of a box portion of a high-frequency heating device according to an embodiment of the present invention, and FIG. 2 shows a cross section of the device. 1 is a front plate, 2 is a back plate, and 3 is an exterior plate, which includes a top surface 3a, a left side surface 3b, and a right side surface 3.
A side wall 4 of the heating chamber 5 is provided inside the exterior plate 3, and the upper surface of the side wall 4 of the heating chamber 5 is formed by a single metal plate into a substantially U-shape. It also serves as the top surface 3a of 3, the left side wall 4a, the bottom surface 4b,
The right side wall 4c is formed of a single metal plate into a substantially U-shape, and the horizontal surface of the bottom surface 4b is fixed substantially flush with the opening lower end 1a of the front plate 1 of the heating chamber.

Above the bottom surface 4b is a heating chamber 5, and below it is an electrical chamber 6 for storing electrical components.

In FIG. 2, a movable door arm 8 whose one end is pivotally supported by a door 7 which is pivotally supported to open and close the front opening of the front plate 1 of the heating chamber 5 is inserted through the arm hole 9 of the front plate 1 into the main body. The other end is pulled by a door spring 10. Further, in the middle, there is an arm guide roller 11 rotatably supported in order to move the door arm 8 smoothly. 2nd with door 7 closed
In the state shown in the figure, the switch lever of the concealed switch 12 is pressed near where the spring 10 of the door arm 8 is hooked. When the door 7 opens, the door spring 10 extends as shown by the dotted line, and the arm guide roller 11 fits into the recess 13 of the door arm 8 that the door spring 10 is hooked to, and the door 7 opens 90 degrees as shown by the dotted line. , can be stopped.

The state of the left and right door arms 8 is shown in a cross-sectional view in FIG. 3.

On the other hand, electrical control parts and the like are attached to the floor plate 14 of the main body of the apparatus, and are housed and fixed in the electrical room 6 through the opening at the bottom of the inverted U-shape of the exterior plate 3.

Note that 15 is a tray for placing the object to be heated, and is rotated by a motor 16. Reference numeral 17 shows a timer for setting a heating time as an example of the arrangement of operating parts.

As described above, according to the configuration of this embodiment, the bottom surface of the heating chamber 5 is horizontally substantially flush with the opening lower end 1a of the front plate 1, making it easy to clean, easy to put in and take out the saucer 15, and convenient to use. In addition, since the upper surface of the heating chamber 5 and the upper surface 3a of the exterior plate 3 serve as both sides, the effective volume of the heating chamber 5 can be increased relative to the external dimensions, and various electrical components can be placed at the bottom. The center of gravity of the main unit is located downward, allowing for stable installation despite its light weight. In addition, the door arm 8 can be placed in the left and right space between the inside and outside double U-shape, and the concealed switch 12 can be placed, so the vertically opening door 7 can be opened and closed safely, smoothly, and reliably. When the door 7 is opened at the same time, a switch that cannot be operated from the outside (referred to as concealment) is turned OFF, thereby providing a safe device.

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

(1) The operation section is located at the bottom of the main body so that it can be easily operated regardless of where the main body is placed.

(2) The outside of the top and back surfaces of the heating chamber is the exterior of the main body, there are no extra voids, there are no other components, and the height of the main body is relatively and substantially low;
Effective use of installation space in the kitchen can be achieved.

(3) Since it serves as both the upper surface of the heating chamber and the upper surface for exterior packaging, it can be made lighter and the material cost can be reduced accordingly.

(4) The door arm of the door can be installed by making good use of the space between the left and right sides of the exterior plate and the left and right sides of the heating chamber.
If the operation panel and power supply parts are placed at the top or bottom using the method described in No. 75780, it is not possible to restrict the opening angle of the vertically swinging door and to install a door arm for operating the concealed switch. , the door opens and closes smoothly and reliably, and the concealed switch operates reliably, providing safe equipment.

(5) Electrical components are placed all at once on the floor plate of the main unit and stored in the electrical room on the exterior board, making it easy to assemble as most of the parts assembly work can be done before storing the wiring. At the same time, the center of gravity of the entire device is located downward, allowing extremely stable installation.

(6) Since the lower end of the front plate opening and the horizontal plane of the bottom of the heating chamber are approximately on the same plane, it is easy to take in and out objects to be heated and the saucer, and the inside of the heating chamber can be cleaned very easily. I can do it.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of the exterior plate, heating chamber plate, etc. of a high-frequency heating device according to an embodiment of the present invention, and FIG. 2 is a longitudinal cross-sectional view of the heating device main body taken along line A-A in FIG. 1.
FIG. 3 is a cross-sectional view taken along line BB in FIG. 1 of the main body of the heating device. 1... Front plate, 2... Back plate, 3... Exterior plate, 4...
...Heating chamber side wall, 5...Heating chamber, 6...Electric room, 7
...Door, 8...Door arm, 9...Arm hole,
DESCRIPTION OF SYMBOLS 10...Door spring, 11...Arm guide roller, 14...Floor plate, 15...Saucer, 16...Motor, 17...Timer, 12...Conceal switch, 13...Recess.

Claims (1)

[Scope of Claims] 1. An exterior plate formed of a single plate having a substantially U-shape on the top surface and left and right side surfaces of the heating device body, and a single plate located inside the exterior and having a substantially U-shape on the bottom surface and left and right sides. The side wall of the heating chamber formed by and the back plate of the heating device main body,
The front plate of the heating device main body has an opening for putting in and taking out the heated object, the door is pivotally supported in front of the opening so that it can be opened and closed freely, and the side wall of the heating chamber is fixed to the top surface of the exterior plate, and the back plate of the heating device main body is attached to them. and a heating chamber formed by fixing the front plate to the bottom plate of the heating device body, which is fixed to both end faces of the approximately U-shaped exterior plate of the heating device body, and a bottom plate of the heating device body that is fixed to both end faces of the approximately U-shaped exterior plate of the heating device body, and a heating chamber formed by fixing the front plate. A high-frequency heating device, comprising: a door arm for regulating the heating device; and an electric chamber and a door arm are provided in a space outside the heating chamber and formed by an exterior plate and a bottom plate of a heating device main body. 2. The high-frequency heating device according to claim 1, wherein a safety device that is linked to the movement of the door is provided so that it can be operated by contacting the door arm.