JPH0733044Y2 - Microwave oven door structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a door structure for opening and closing a heating chamber of a microwave oven.

(Prior Art) Generally, as shown in FIG. 3, a microwave oven has a microwave oven main body 1 having a front opening and a heating chamber 2 inside. The heating chamber 2 is opened and closed by a door 3 whose one end in the width direction is pivotally attached to one side of the front surface of the range main body 1.

Conventionally, the door 3 has been constructed as shown in FIG.
That is, reference numeral 4 in the figure is a door plate. The door plate 4 includes a punching portion 5 and a flange portion 6 formed by bending a peripheral portion of the punching portion 5 toward the inner surface in a substantially L-shaped cross section.
It is formed from and. An inner barrier 7 is joined to the inner surface side of the door plate 4, and an outer barrier 8 is joined to the outer surface side thereof.

A door sash 9 having an L-shaped cross section is provided around the door plate 4. That is, the door sash 9 is provided with its one side 9a joined to the outer surface of the peripheral portion of the outer barrier 8 and the other side 9b joined to the joining piece 6a bent to the outer peripheral edge of the flange portion 6 of the door plate 4. There is.

In addition, a choke space 12 is formed around the inner surface of the door plate 4 by a flange 11 formed around the inner barrier 7.
Is formed, and the opening of the choke space 12 is closed by a cover 13 such as a synthetic resin that allows microwaves to pass therethrough.

(Problems to be Solved by the Invention) In the above conventional door structure, the width dimension of one side 9a of the door sash 9 is reduced to improve the design. Since the portion of the outer barrier 8 is projected more outward than the punching portion 5, there is a problem in that the peripheral portion of the outer barrier 8 becomes very weak in terms of strength against external force, and in the end, one side of the door sash 9 is present. There is a problem that the width dimension of 9a cannot be made too small and there is a design limitation.

The present invention has been made in view of the above circumstances, and the purpose thereof is to reduce the width dimension of one side of the door sash exposed on the outer surface of the door without lowering the strength of the peripheral portion of the outer barrier. It is to provide a door structure for the microwave oven.

[Structure of the Invention] (Means for Solving the Problems) In order to solve the above problems, the present invention is directed to a door plate, a door sash provided in the peripheral portion of the door plate, and an inner surface side of the door plate. In the door structure of the microwave oven, which is composed of the inner barrier provided in and the outer barrier provided on the outer surface side,
The door sash is provided with a receiving portion that has a step with the outer surface of the door sash and is substantially flush with the outer surface of the door plate, and the peripheral portion is joined to this receiving portion while the remaining portion is joined to the outer surface of the door plate. And the outer barrier is provided.

(Operation) According to the above means, since the peripheral portion of the outer barrier is joined to the receiving portion of the door sash, the strength of the peripheral portion of the outer barrier is not reduced, and therefore, one side of the door sash is not damaged. The width can be reduced. Since the remaining portion of the outer barrier except the peripheral portion is joined to the outer surface of the door plate, deformation does not occur even if an external force acts on the remaining portion.

(Embodiment) An embodiment of the present invention will be described below with reference to FIG. Incidentally, the same parts as those of the conventional structure shown in FIG.

That is, in this embodiment, the receiving portion 21 having a step having a depth dimension substantially the same as the thickness dimension of the outer barrier 8 is formed on one side 9a of the door sash 9. The door sash 9 has an edge formed by the punching portion 5 of the door plate 4 and the flange portion 6 so that the receiving portion 21 of the one side 9a is flush with the outer surface of the punching portion 5 of the door plate 4. It is attached to the outer peripheral surface of the part.

The outer barrier 8 is joined to the outer surface of the punching 5 of the door plate 4 except for the peripheral portion, and the peripheral portion is joined to the receiving portion 21 on one side 9a of the door sash 9,
For example, it is fixed by means such as adhesion.

According to such a microwave oven door structure, the outer barrier 8 is provided with its peripheral portion joined to the receiving portion 21 formed on one side 9a of the door sash 9. The depth dimension of the receiving portion 21 is set to be substantially the same as the thickness dimension of the outer barrier 8. Therefore, the outer surface of the outer barrier 8 and the outer surface of the one side 9a of the door sash 9 are flush with each other, and a step portion is not formed at the joint portion thereof. Therefore, since the outer surface of the door 3 is flattened, not only the appearance is good, but also dust is not likely to collect at the joint between the outer barrier 8 and the door sash 9.

Even if the width of the door sash 9 is reduced, one side
Since the peripheral portion of the outer barrier 8 can be joined to the receiving portion 21 formed in 9a, the strength of the peripheral portion of the outer barrier 8 does not decrease. That is, since the width dimension of the door sash 9 can be freely changed, the design of the door 3 can be diversified. Furthermore, since the remaining portion of the outer barrier 8 excluding the peripheral portion is joined to the outer surface of the punching portion 5 of the door plate 4, even if an external force acts on the remaining portion, no deformation occurs.

As described above, since the outer barrier 8 is provided by being joined to the punching portion 5 of the door plate 4 and the receiving portion 21 of the door sash 9, the outer barrier 8 is peeled off without disassembling the door 3. Can be exchanged.

FIG. 2 shows another embodiment of this invention. That is, in this embodiment, the receiving portion 21 of the door sash 9 and the peripheral portions of the punching portion 5 of the door plate 4 adjacent to the receiving portion 21 are provided with concave reservoir portions 21a and 5a, respectively, in the circumferential direction of the door 3. The target or the entire circumference is formed. Then, the pool portions 21a, 5a
Then, an adhesive 22 of silicon type or the like is filled in and the outer barrier 8 made of, for example, transparent glass is adhered and fixed.

According to such a structure, the adhesive 22 is applied to the pool portions 21a and 5a.
When the outer barrier 8 is assembled in a state where it is excessively filled, the adhesive 22 escapes into the gap of the joint portion between the door plate 4 and the door sash 9, and passes through the joint surface between the outer barrier 8 and the door sash 9,
Since it does not come out to the outer surface side of the outer barrier 8,
The outer barrier 8 can be easily assembled without the need to wipe the adhesive 22.

In this embodiment, the reservoir may be formed only on one of the door sash and the door plate, and even in such a structure, an extra adhesive is used to form a gap in the joint between the door plate and the door sash. You can escape to.

The outer barrier may be a film instead of glass. In that case, a transparent adhesive is applied to the entire back surface of the outer barrier. Therefore, as shown in FIG. It is not necessary to form a reservoir on the sash.

[Advantage of the Invention] As described above, according to the present invention, the door sash is provided with the receiving portion substantially flush with the door plate, the peripheral portion of the outer barrier is joined to the receiving portion, and the remaining portion of the outer barrier is joined. I made it join to the door plate. Therefore, even if the width of the door sash is reduced, the peripheral portion of the outer barrier is securely joined to the receiving portion, and the strength of the peripheral portion of the outer barrier is not reduced. This has the advantage that the door design cannot be restricted without being able to do so.

[Brief description of drawings]

FIG. 1 is a sectional view of a structure of a peripheral portion of a door showing an embodiment of the present invention, FIG. 2 is a sectional view of a structure of a peripheral portion of a door showing another embodiment of the present invention, and FIG. FIG. 4 is a perspective view of a general structure of a stove, and FIG. 4 is a cross-sectional view showing a structure of a peripheral portion of a conventional door. 3 ... Door, 4 ... Door plate, 7 ... Inner barrier, 8 ... Outer barrier, 9 ...
Door sash, 21 ... Receiving part, 5a, 21a ... Reservoir part, 22 ... Adhesive.

Claims (2)

[Scope of utility model registration request] 1. An electronic device comprising a door plate, a door sash provided on a peripheral portion of the door plate, an inner barrier provided on an inner surface side of the door plate and an outer barrier provided on an outer surface side of the door plate. In the range door structure, the door sash is provided with a receiving portion which has a step with the outer surface thereof and is substantially flush with the outer surface of the door plate, and the peripheral portion is joined to the receiving portion while the remaining portion is A door structure for a microwave oven, characterized in that the outer barrier is provided by being joined to the outer surface of the door plate. 2. An adhesive reservoir for adhering an outer barrier is formed on at least one of the receiving portion of the door sash and the peripheral portion of the outer surface of the door plate adjacent to the receiving portion. The microwave door structure according to claim 1.