JPS6323639B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a high-frequency heating device for dielectrically heating an object to be heated housed in a heating chamber.

Configuration of conventional example and its problems A conventional microwave oven, for example, a high-frequency heating device, has a door 3 at the opening of the heating chamber 2, as shown in FIG.
is provided so that it can be opened and closed freely. Reference numeral 7 denotes a frame provided facing the peripheral edge of the door 3. This frame 7 is provided with a radio wave absorber 21 and a reflector 5.
The mounting portion 8 was fixed to the side surface of the door backing plate 4 with screws 11 together with the exterior body 12.

However, in the high-frequency heating device having such a configuration, as shown in FIGS. 5 and 6, the thickness of the frame 7 between the door and the radio wave absorber 21 is
As the distance between the reflector plate 5 and the reflector plate 5 increases, the position of the reflector plate 5 becomes unstable, resulting in a poor radio wave leakage prevention effect.

In addition, in a high-frequency heating device in which a radio wave absorber is not provided in the frame 7, one end of the frame 7 is locked to the end of the reflector 5 as shown in FIGS. 7 and 8, and the frame 7 is attached. Connect the portion 8 and the other end of the reflector 5 with a screw (not shown).
Attach it to the door backing plate 4, and then attach it to the mounting part 8 of the frame 7.
There is a configuration in which the exterior body 12 is attached to the frame a with screws 11. However, it is difficult to maintain a constant gap between the reflector 5 and the door 3 and the door abutment plate 4, and it is difficult to attach the reflector 5, the frame 7, the exterior body 12, etc.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and aims to provide a high-frequency heating device that does not leak radio waves from the opening of the heating chamber and has excellent assembly workability.

Structure of the Invention In order to achieve the above object, the high frequency heating device of the present invention comprises a reflecting plate by bending an end of a door backing plate, and an end of a frame is latched to the end of the reflecting plate. At the same time, the mounting portion of the frame body is attached to the heating chamber upper wall and the main body bottom plate at the same time as the exterior body,
Since the gap between the door periphery and the reflector can be kept almost constant, the effect of preventing radio wave leakage from the opening of the heating chamber can be further enhanced, and the reduction in parts improves assembly workability and reduces costs. This has the effect that it is possible to achieve the following.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

Note that the same members as in the conventional example will be described with the same reference numerals.

In FIG. 1, reference numeral 1 denotes a main body of the high-frequency heating device, and a heating chamber 2 in which the object to be heated is accommodated.
is provided. 3 is a door provided at the opening of the heating chamber 2 so as to be openable and closable.

In FIG. 2, reference numeral 4 denotes a door abutting plate with which the back surface of the door 3 comes into surface contact when the door 3 is closed; one end of this door abutting plate 4 is bent toward the door 3 side to form a reflecting plate 5; A locking portion 6 is provided in the holder. Reference numeral 7 denotes a frame such as a decorative board, the inner end of this frame 7 is engaged with the locking part 6 of the reflection plate 5, and the mounting part 8 protruding toward the heating chamber 2 is heated as shown in FIG. It is attached together with an exterior body 12 to a mounting portion provided on the room upper wall 9 and the main body bottom plate 10 with screws 11 .

As described above, according to the high-frequency heating device of this embodiment, since the door patch plate 4 and the reflector plate 5 are integrally configured, the work for attaching the reflector plate 5 can be reduced.
Since the gap between the door 3 and the reflection plate 5 can be kept substantially constant, the effect of preventing leakage of radio waves from the opening of the heating chamber 2 can be further enhanced.

Furthermore, by configuring the door patch plate 4 and the reflector plate 5 in one piece, even if food particles or the like adhere to the door patch plate 4, it is easy to clean, resulting in a high-frequency heating device that is easy to use.

Also, when assembling the high frequency heating device, the reflector plate 5
The end of the frame 7 is engaged with the end locking part 6, and the frame 7 is
At the same time as the exterior body 12, attach the mounting part 8 of the heating chamber to the mounting part provided on the heating chamber upper wall 9 and the main body bottom plate
This has the effect of improving assembly work efficiency.

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

(1) By integrating the door backing plate and the reflector, it is possible to reduce the work required to install the reflector and increase the effectiveness of preventing radio wave leakage from the opening of the heating chamber. The high-frequency heating device is easy to clean and easy to use even if it gets stuck.

(2) To install the frame, engage the ends of the frame with the locking parts provided at the ends of the reflector, and connect the mounting parts of the frame to the mounting parts provided on the top wall of the heating chamber and the bottom plate of the main body. In addition, since the exterior plate is placed over the attachment part and attached at the same time, it is possible to improve the assembly work efficiency, and the attachment part of the frame is not visible from the outside, so that the appearance is not spoiled.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a high-frequency heating device that is an embodiment of the present invention, Fig. 2 is a plan cross-sectional view taken along the line A-A' in Fig. 1, and Fig. 3 is the exterior body shown in Fig. 2. FIG. 4 is a plan sectional view showing the main parts of a conventional high-frequency heating device corresponding to FIG. 2, and FIG. 5 shows the structure of the frame shown in FIG. 4. FIG. 6 is a perspective view showing the main parts of the door cover plate shown in FIG. 4, and FIG. 7 is a plan sectional view showing the main parts of another conventional high-frequency heating device corresponding to FIG. 2. , FIG. 8 is a perspective view showing essential parts of the frame shown in FIG. 7. 2...Heating chamber, 3...Door, 4...Door patch plate, 5...
Reflector plate, 7...Frame body, 8...Mounting portion, 9...Heating chamber upper wall, 10...Body bottom wall, 12...Exterior body.

Claims (1)

[Claims] 1. A heating chamber that accommodates an object to be heated, a door provided at the opening of the heating chamber so as to be openable and closable, a door cover plate provided at the opening of the heating chamber, and a door facing the peripheral edge of the door. comprising a reflecting plate provided in an exposed manner, and a frame having an end secured to an end of the reflecting plate, and forming the reflecting plate by bending an end of the door patch plate; The high-frequency heating device has a structure in which a mounting portion of the frame body is covered with an exterior plate and is simultaneously attached to the upper wall of the heating chamber and the bottom plate of the main body.