JPS589131Y2 - High frequency heating device door - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a door for a high-frequency heating device, and is intended to improve the ease of cleaning and assembly.

Generally, in order to keep the door finder clearly visible at all times so that the cooking inside the heating device body can be viewed from the outside, conventionally a transparent barrier 5 was placed on the closing side of the door as shown in Figure 3.
In addition, a door finder 3 is provided that allows the interior to be seen through and prevents microwave leakage, and a finder cover 6 that is transparent or colored to the extent that it can be seen through is provided on the door surface, and is fixed to the door frame 1. The finder cover 6 and the door frame 1 are wrapped in a fixed frame 10 formed in the shape of a frame along the outer circumferential surface of the door frame 1, and screwed together with screws 11 using through holes previously provided at corresponding positions. However, due to the processing precision of each of the above-mentioned components, it is difficult to fix them properly and with a good appearance. For example, uneven gaps are created between the finder cover 6 and the fixing frame 10, making the fixation unstable. When cleaning, it is difficult to remove dirt that has entered and adhered to this part, and since the screws 11 that screw the fixed frame are located on the outer periphery of the door, assembly is not efficient.
When this was tightened, convex deformations could occur between the screws, which caused many problems in terms of appearance.

In the present invention, the conventional finder cover 6 and its fixing frame 10 are integrally formed from a material such as plastic, thereby avoiding uneven parts on the front and side surfaces of the door, and eliminating the need for the fixing frame on the side circumferential surface of the door. This is an attempt to eliminate the above-mentioned drawbacks of the conventional method by moving the mounting portion using screws or the like to the outer periphery of the front surface of the door.

One embodiment of the present invention will be described below. In Figs. 1 and 2, numeral 1 is a door frame made of a material such as a steel plate to form a door frame, and a finder, which will be described later, is attached to the outer periphery of the front surface. Multiple through holes 1 for fixing the cover 6
It has a.

Reference numeral 2 denotes an inner frame made of a material such as a steel plate, which has screw holes for reinforcing the door frame 1 and for attaching the door front plate 4, which will be described later.Both this inner frame and the door frame 1 have a hole in the center for the finder 3, which will be described later. square hole 10,1
1, and is electrically connected to a door finder 3 made of gold steel or a metal porous plate.

Reference numeral 4 denotes a door front plate which is located on the door closing side and fixes a transparent barrier 5 made of glass or the like with a sealing part 8 provided on the outer periphery for the purpose of cleaning and mechanical protection of the door finder 3. It also plays a role in preventing external leakage of microwaves generated in the cooking chamber O of the high-frequency heating device main body H, and the inner frame 2 has screw through holes corresponding to the mounting screw holes of the inner frame 2. It is screwed in at 7.

Reference numeral 6 denotes a finder cover, which is located on the door opening side and is integrally formed of plastic or the like so as to cover the front and side surfaces of the door frame 1 for the purpose of cleaning and mechanically protecting the finder 3. It further has a protrusion P that fits into a through hole 1a provided on the outer periphery of the front surface of the door frame 1.

A is the door front plate 4, door frame 1, and inner frame 2.
9 is a choke cover that covers the high frequency introduction port of this choke chamber, and is made of a material such as plastic.

The door D configured as described above is rotatably supported on the heating device main body H so as to close the front opening of the heating chamber O.

Note that the door frame 1 and the inner frame 2 are joined by spot welding or the like, and then a suitable surface treatment is applied, and then the finder cover 6 is superimposed on the surface of the door frame 1, and the convex part P is inserted into the through hole 1a. Then, the tip of the protrusion P that protrudes to the back side through the through hole 1a is heated and deformed, and the finder cover 6 is attached to the door frame 1 at the protrusion as shown in FIG. Fix by welding P.

On the other hand, the finder 3 is clamped in advance at the periphery of each of the square holes 10 and 11 of the door frame 1 and the inner frame 2, so the following are the barrier 5, the seal part 8, and the choke cover 9.
, the door front plate 4 is set in this order, and is fixed by tightening the screws 7 to complete the assembly of the door D.

By configuring the present invention as described above, uneven parts and gaps on the door surface are removed, and dangerous edges and dirt that enter small gaps, which conventionally had to be taken care of, can be removed. There is no hassle in removing it, and since the two parts are integrated, it is simple and inexpensive to assemble, and it has the practical effect of being simple and attractive in terms of design. It is something.

[Brief explanation of the drawing]

FIG. 1 is a front view of the high-frequency heating device of the present invention, FIG. 2 is a sectional view taken along the line A--A in FIG. 1, and FIG. 3 is a longitudinal sectional view of a door of a conventional high-frequency heating device. In the figure, 1 is a frame door, 2 is an inner frame, 3 is a door finder, 4 is a door front plate, 5 is a transparent banoya,
6 is a finder cover. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] In addition to providing a finder cover on the front side of the door frame and the door finder that is electrically connected to the door frame,
In the case where a transparent barrier is provided on the back side of the door frame, a plurality of through holes are provided at the front outer peripheral edge of the door frame, and the finder cover is integrally formed so as to continuously cover the front side of the door frame from the front side. Furthermore, this finder cover has a convex portion that fits into the through hole in the door frame at a position corresponding to the through hole,
A door for a high-frequency heating device, characterized in that a finder cover is welded to a door frame with its convex portion.