JPS60249290A - Door device for high frequency heater - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an opening/closing door device for a high frequency heating device such as a microwave oven.

Conventional Structure and Problems Conventionally, in a high-frequency heating device such as a microwave oven, an opening/closing handle has been provided on the door as a means for opening the door that covers the opening for putting in and taking out the heated object. Some were opened by pressing a push button provided on the operating section.

In the former example, the handle is usually located on the front surface of the metal frame of the door that incorporates the high-frequency leakage prevention device. Both had a height of 26 to 30 mm and protruded from the door surface. According to this configuration, only the handle portion protrudes from the heating device main body. This increases the size of the package, which increases transportation costs, and also has the drawback that when the door is closed, the handle protrudes, causing parts of the body to get caught when moving back and forth in the narrow kitchen. However, when opening the door, depending on the installation location, the handle may hit the wall or floor first, reducing the opening angle.

There are some that have the handle at the same height as the surface of the door, but this has the disadvantage that the size of the handle has to be extended to the outside of the metal frame of the door, which increases the size of the main body accordingly. Ta.

In the latter example, the door surface is normally flat and flush with the operating part, but it becomes complicated because the push button and the mechanism for releasing the door catch need to be linked, making it difficult to open the door with your left hand during cooking. The natural procedure of opening the door and taking food in and out with your right hand is not possible, and the door opened with the push button bounces off the stopper and closes while you are putting food in and out. there were.

Purpose of the Invention The present invention solves the above-mentioned conventional drawbacks, and provides a door for a high-frequency heating device such as a microwave oven that does not protrude from the door surface, does not require extra dimensions of the main body, and is structurally friendly. The purpose is to provide a simple means of opening and closing a door.

Structure of the Invention In order to achieve the above object, the structure of the door device of the high-frequency heating device of the present invention is such that a transparent resin cover is provided on the front surface of the door that can be opened and closed, and a metal frame portion of the door has a built-in high-frequency leakage prevention device. A handle is formed integrally with the cover, and is located on the inner side and partially overlaps with the opening of the front plate through which the inside of the heating chamber is viewed, and does not protrude from the front surface of the door, and has a simple structure. However, since the handle does not protrude from the door surface and the main body dimensions do not increase, it can be used in small heating devices without bumping or causing trouble when opening and closing even if placed in a small kitchen. It has the following effects:

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

Figure 1 shows one embodiment, showing a cross section of the front-opening door.
There is a punched metal plate 3 having a large number of opening diameters large enough to prevent high frequency leakage, facing the front opening 2, and a metal frame 4 incorporating a leakage prevention device is provided around the four sides of the punched metal plate 3. Incidentally, on the surface facing the metal frame 4, there is a metal plate serving as the periphery of the front plate opening 2. Metal frame 4 of the door
The thickness of 24 is determined by the configuration of the leakage prevention device.
In a microwave oven that uses a high frequency of 50MHz,
There is a close relationship with the wavelength, and generally 20 to 26 cuts are required. Reference numeral 6 denotes a cover made of transparent resin that uniformly covers the front surface of the metal frame 4, and is configured so that the inside of the heating chamber 1 can be seen through the transparent portion of the cover through the punched metal plate 3.

At the lower part of the metal frame 4 on the upper side of the door, the resin cover 6 is provided with a part that overlaps with the nipping metal plate 3.The cross-sectional structure of the handle 6 is similar to that of the door. There is a four part 7 facing the metal plate 3 (in the thickness direction, that is, from the surface 5), and this four part 7 is provided with a size sufficient to insert a finger of the hand, and the upper front surface of the four part 7 protrudes downward. This is the part on which the finger is caught.

As mentioned above, the thickness of the door is 20 to 26I+lI+1, so you can confirm that it is deep enough to put your finger in.
It is not necessary to provide the width of the door across the entire width of the door, and it is usually 4
100 to 1 for doors with width dimensions around 00 wm
It is sufficient that the recess 7 having a length of about 60 mm is located approximately at the center of the entire width. Since the handle 6 is integrally molded with the transparent resin cover 6, each curved surface of the recess 7 is also transparent, and there is no need to provide it across the entire width of the door. Even if they overlap, it will not be a hindrance to seeing through the interior.

6 Me\- Even in the case of a side-opening door, four parts of approximately the same shape may be provided inside the side surface of the metal frame of the door.

According to this embodiment, since the door surface resin cover 6 and the door surface resin cover 6 are integrated and embedded in the surface, there are no protruding parts, the packaging size can be reduced, and there is no problem during use. Not. The resin cover 9 is transparent and integrally molded with the handle, and occupies only a portion of the door so that it does not get in the way when looking inside. A handle 6 is placed inside the metal frame 4 of the broken door.
Since it is provided with a handle, there is no need to extend it outside for a handle, and there is no need to increase the external dimensions. Since the handle 6 and the resin cover 6 are integrated, the material cost is low and the installation work is easy. It has the advantage of being usable for both front-opening doors and side-opening doors.

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

(1) The handle does not protrude from the door surface, reducing packaging size and reducing transportation costs.

(2) The handle is not protruding, so the platform 7 is narrow.
``-'- Even when installed in a location, it does not obstruct traffic. Also, when opening and closing, there is no problem with the protruding handle reducing the opening angle.

(3) Since the handle is embedded in the door cover and is provided inside the metal frame of the door, there is no need for an extra dimension for the handle, which contributes to miniaturization of the main body of the device.

(4) Because the handle is integrally molded with the transparent resin cover,
Installation is easy and does not interfere with seeing inside the heating chamber.

[Brief explanation of drawings]

The figure shows a longitudinal cross-sectional view of a door of a high-frequency heating device that is an embodiment of the present invention. 3... Punched metal plate, 4... Metal frame, 5... Transparent resin cover, 6... Handle. Name of agent: Patent attorney Toshio Nakao and 1 other person 41
9-

Claims (1)

[Claims] (1) A transparent resin cover is provided on the front surface of the door that can be opened and closed, and placed at a position that partially overlaps the front plate opening that looks inside the heating chamber from the metal frame of the door that houses the high-frequency leakage prevention device. . A door device for a high-frequency heating device, wherein a handle that does not protrude from the front surface of the door is provided integrally with the cover.