JPH0312437B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a door device that can be opened and closed for a high-frequency heating device such as a microwave oven.

Conventional structure and its problems Conventionally, as a means for opening the door that covers the opening for putting in and taking out the heated object in the high-frequency heating device of a microwave oven, the door is provided with an opening/closing handle. , there were some that were opened by pressing a push button etc. provided on the operation part.

In the former example, the handle is usually located on the front surface of the metal frame of the door incorporating the high frequency leakage prevention device. The handle required a space for fingers and had a height of at least 25 to 30 mm, protruding from the door surface. According to this configuration, only the handle portion protrudes from the heating device main body, which increases the packaging size and transportation costs, and also prevents the handle from protruding even when the door is closed during use. The problem was that you could hit parts of your body when moving around in a small kitchen, and depending on where you installed the door, the grip part would hit the wall or floor first. There were problems such as reducing the opening angle.

Some handles are placed further outside the outer edge of the door in order to keep the handle at the same height as the surface of the door, but the dimensions for the handle must be extended to the outside of the metal frame of the door. The disadvantage was that the size of the main body became larger.

In the latter example, the door surface is usually flat and flush with the operating part, but it becomes complicated because the pushbutton and the mechanism for opening the door's catch need to be linked together.
During cooking, the natural procedure of opening the door with your left hand and taking food in and out with your right hand is not possible, and the door opened with the push button bounces off of the stopper etc., making it difficult to take food in and out. There were some problems, such as the machine closing during work.

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 without protruding from the door surface and without unnecessary parts on the main body or around the door for inserting fingers or hands. To provide a door opening/closing means that does not require space and is structurally simple.

Structure of the Invention In order to achieve the above object, the door device of the high frequency heating device of the present invention includes: a heating chamber for storing and heating an object to be heated; a high frequency generating means for supplying high frequency waves to the heating chamber;
It consists of a heating chamber opening through which a heated object is taken in and taken out of the heating chamber, and a door that covers the heating chamber opening so as to be openable and closable, and is equipped with a high frequency leakage prevention device on the periphery,
A transparent resin cover is provided on the front surface of the door, and a cover that protrudes from the front surface of the door is located inside the metal frame of the door containing the high frequency leakage prevention device and overlaps the heating chamber opening. The handle is integrated with the cover, and has a simple structure, but the handle does not protrude from the door surface, and the outer dimensions of the main body and the area around the door for inserting fingers and hands are also small. Since it does not get large, it will not get bumped even if placed in a small kitchen etc.
DESCRIPTION OF AN EMBODIMENT HAVING EFFECTS OF SUITABLE FOR USE IN A SMALL HEATING APPARATUS, WHICH DOES NOT CAUSE COMFORT TO OPENING AND CLOSING.An embodiment of the present invention will be described below with reference to the drawings.

The figure shows a cross section of a front-opening door in one embodiment, and facing the front opening 2 of the heating chamber 1 is a punched metal plate 3 having a large number of openings large enough to prevent high-frequency leakage.
A metal frame 4 incorporating a leakage prevention device is provided around the four sides. Incidentally, on the surface facing the metal frame 4, there is a metal plate serving as the periphery of the front plate opening 2. The thickness of the metal frame 4 of the door is determined by the configuration of the leakage prevention device, but in microwave ovens that use a high frequency of 2450 MHz, it is closely related to the wavelength, and is generally 20 to 25 mm. I need. Reference numeral 5 denotes a transparent resin cover that uniformly covers the front surface of the metal frame 4, and is configured so that the interior of the heating chamber 1 can be seen through the transparent portion of the cover through the punched metal plate 3.

A handle 6 is provided on the resin cover 5 at the lower part of the metal frame 4 on the upper side of the door, with a portion overlapping the punched metal plate 3. The cross-sectional structure of the handle 6 has a recess 7 extending in the thickness direction of the door, that is, from the surface 5 toward the punching metal plate 3.
A portion 8 is provided with sufficient dimensions to insert a finger of a hand, and a portion 8 protrudes downward on the upper front surface of the recess 7.
This is the part that catches your fingers. As mentioned above, the thickness of the door is 20 to 25 mm, so it is deep enough to insert your finger. The recess 7 does not need to be provided all the way across the entire width of the door;
100 to 150 for doors with a width of around 400 mm
It is sufficient that the concave portion 7 having a length of about mm is positioned approximately at the center of the entire width. Since the handle 6 is integrally molded with the transparent resin cover 5, each curved surface of the recess 7 is also transparent, and there is no need to provide it all over the entire width of the door. Even if they overlap, it will not be a hindrance to seeing through the interior.

In the case of a side-opening door, a recessed portion 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 handle 6 and the door surface resin cover 5 are integrated and embedded in the surface, there is no protruding part, the packaging size can be reduced, and it is easy to use during use. It will not be a hindrance. The resin cover 9 is transparent and integrally molded with the handle 6, and occupies only a part of the door so that it does not get in the way when looking inside. Further, since the handle 6 is provided inside the metal frame 4 of the door, there is no need to extend the handle outside, and the external dimensions do not need to be increased. Since the handle 6 and the resin cover 5 are integrated, the material cost is reduced and the installation work is easy. It has the advantage of being usable for both front-opening doors and side-opening doors.

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

(1) The handle part does not protrude from the door surface, the packaging size of the heating device itself can be reduced, and transportation costs can be reduced.

(2) Since the handle part does not protrude, it will not get in the way of traffic even if installed in a small kitchen. Furthermore, when opening and closing, there is no problem in which the protrusion of the handle reduces the opening angle.

(3) Since the handle is embedded in the door cover and is provided inside the metal frame of the door, extra space and dimensions for inserting fingers and hands into the handle can be created around the door, etc. There is no need to take it to the next level, which helps in downsizing the device itself.

(4) Since the handle is integrally molded with the transparent resin cover, installation is easy and does not interfere with seeing through the inside of the heating chamber.

[Brief explanation of the drawing]

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...hand.

Claims (1)

[Claims] 1. A heating chamber that stores and heats an object to be heated, a high frequency generator that supplies high frequency waves to the heating chamber, a heating chamber opening that takes the object to be heated into and out of the heating chamber, and a heating chamber opening that covers the heating chamber opening so as to be openable and closable, and consisting of a door equipped with a high frequency leak prevention device on the periphery, a transparent resin cover provided on the front surface of the door, and an inner side of the metal frame of the door containing the high frequency leak 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 at a position overlapping the heating chamber opening.